Method and device for detection and correction of dimmer misoperation

FIELD: electricity.

SUBSTANCE: invention is referred to lighting devices and control of lighting devices operation. The result is obtained due to registration of the first and second values of phase angle for dimmer coupled to the power converter exciting load of solid-state lighting, at that the first, and second values correspond to in-series half-periods of line voltage input signal and difference between first and second value is defined. When this difference exceeds threshold difference specifying asymmetric waveform of the line voltage input signal, the selected corrective measure will be performed.

EFFECT: correction of misoperation and/or shutdown of power supply from load of solid-state lighting in order to eliminate undesired effects, such as twinkling.

20 cl, 13 dwg

 

[0001] the Present invention relates, in General, to the management of solid state lighting devices. In particular, the various disclosed here are methods and devices conforming to the invention relate to the detection and correction of improper operation of a dimmer switch in a lighting system including a solid state lighting load.

Art

[0002] a Digital or solid-state lighting technologies, i.e. illumination based on semiconductor light sources such as light emitting diodes (LEDs), provide a promising alternative to traditional fluorescent lamps, discharge lamps high intensity discharge (HID) and incandescent lamps. Functional advantages and benefits of LEDs include high energopromyshlenny and optical efficiency, durability, low operating costs and much more. Recent advances in led technology have provided efficient and reliable sources of full spectrum lighting, which allow to achieve different lighting effects in many applications.

[0003] Some devices containing these sources, differ in that they contain a lighting module, including one or more LEDs capable of producing white light and/or light of other colors, for example, to�ACLs, green and blue, and the controller or processor to control the LED output to generate different colors and lighting effects with color-changing, for example, as discussed in detail in U.S. patent No. 6,016,038 and 6,211,626. Led technology includes lamps with the power voltage from the network, for example, ESSENTIALWHITE series, manufactured by Philips Color Kinetics. Such lighting devices may have the ability to reduce the forces of light using the technology of dimmer switches with a cut-off phase on the falling edge, for example, an electric low-voltage (ELV) dimmer switches for voltages in AC power (or input voltage) 120 V or 220 V.

[0004] the Dimmer switches are used in many lighting installations. Traditional dimmer switches work well with incandescent lamps (conventional or halogen). However, problems arise with other types of electron tubes, including compact fluorescent lamps (CFL), low voltage halogen lamps, electronic transformers, and solid-state lighting (SSL) lamps, e.g. LED and acid. The brightness of low-voltage halogen lamps, electronic transformers, in particular, can be reduced with the use of special dimmer switches, for example, dimmer switches type ELV or resistive�about-capacitive (RC) of dimmer switches, which work adequately with loads at the entrance which has a correction circuit the power factor (PFC).

[0005] Traditional dimmer switches usually cut off a portion of each waveform of the input signal voltage and miss the remainder of the waveform to the lighting device. The dimmer with a cut-off phase on the leading edge cuts the leading edge of the waveform of the voltage signal. The dimmer with a cut-off phase on the falling edge cuts the rear fronts of the wave forms of the voltage signal. Electronic loads, such as pathogens LED, it is usually best to work with the dimmers with a cut-off phase on the falling edge.

[0006] unlike incandescent and other resistive lighting devices which, of course, accurately respond to the clipped sine wave generated by the dimmer switch with a cut-off phase, LED and other solid state lighting load can create some problems when linking with these dimmer switches with a cut-off phase, for example, turning off near the lower limit, false triggering of the triac, the problem of minimum load, flickering near the upper limit, and large step changes in light output. Some problems are related to the compatibility of the components of the lighting system, for example, regulators of light with a cut-off phase and pathogens �verdolini lighting load (for example, power converters), and demonstrate the related symptoms that lead to undesirable flickering of the light emitted. The reason for the flicker is usually a lack of homogeneity in the clipped sinusoidal wave rectified input voltage, where the asymmetric waveform.

[0007] for Example, in Fig. 1A shows the waveform nevirapine input signal voltage supplied to the dimmer with a cut-off phase, where nevirapine input voltage has an intermittent positive and negative half-cycles. Fig. 1B shows the clipped waveform of the rectified input signal voltage output from the dimmer, where the dimming rate is about 50 percent that indicated the relative position of the slider dimmer. In particular, Fig. 1B illustrates a scenario in which the controller and exciter solid state lighting load functioning correctly and thus provide an essentially homogeneous rectified truncated sinusoidal waves corresponding to the positive and negative half-cycles. Thus, the rectified input voltage, subjected to reduction treatment intensity, has symmetrical clipping both positive and negative�x halfcycles nevirapine input voltage.

[0008] in contrast, Fig. 1C shows the clipped waveform of the rectified input signal voltage output from the dimmer switch, where the controller and exciter solid state lighting load is dysfunctional and, thus, provide a heterogeneous straightened clipped sine wave. Thus, the rectified input voltage, subjected to reduction treatment intensity, has asymmetrical clipping of the positive and negative half-cycles nevirapine input voltage. This asymmetric representation in the clipped waveforms of the rectified input mains voltage causes flickering light emitted by the solid state lighting load.

[0009] the Cause of the malfunction may be a number of possible problems. One problem is insufficient load current passing through the internal switch dimmer. The dimmer provides its internal clock based on the current flowing through the solid state lighting load. Since the solid state lighting load may be a small fraction of the load of the filament, the current consumed by the dimmer may not be sufficient to ensure correct operation of the internal clock. Another Pro�LEM is what dimmer can provide your internal power to maintain their internal circuits of the current consumed by the load. When there is insufficient load, internally powered dimmer can be switched off, leading to asymmetries in the wave forms.

[0010] Thus, in the prior art there is a need to detect improper operation of components of the lighting system, for example, dimmer and/or the exciter solid state lighting load, and in the identification and implementation of corrective actions to correct malfunctions and/or power solid state lighting load, to eliminate undesirable effects, such as flickering light.

Summary of the invention

[0011] the Present disclosure relates to methods and devices conforming to the invention, for the detection of improper operation of solid-state lighting systems, with signs of asymmetry in the positive and negative half-cycles of the input signal voltage, and selective implementation of corrective actions.

[0012] In General, in one aspect, the invention provides a method of detecting and correcting improper operation of a lighting system including a solid state lighting load. The method includes the EGR�pictures of the first and second measurements of the phase angle dimmer, connected to the power Converter, enticing solid state lighting load, the first and second dimensions correspond to sequential half-cycles of the input signal voltage, and determining the difference between the first and second measurements. When the difference exceeds the threshold difference, indicating asymmetric waveforms of the input signal voltage is selected corrective action.

[0013] In another aspect, in General, the invention provides a system for controlling the power supplied to the solid state lighting load, which includes the dimmer, the power Converter and the circuit phase angle. The dimmer is plugged into a power source voltage and configured for the controlled reduction of light output of solid state lighting load. A power Converter configured to excite the solid state lighting load in response to the rectified input voltage signal coming from the mains voltage source. The reception circuit phase angle is configured to register the phase angle of a dimmer switch having successive half-cycles of the input voltage signal, for determining the difference between successive half-cycles, and to implement adjustments�youseo operation, when the difference exceeds the threshold difference, indicating asymmetric waveforms of the input voltage signal.

[0014] In another aspect, the invention provides a method of eliminating flicker of the light emitted by the led light source generated by the power Converter in response to the dimmer with a cut-off phase. Method includes registration of phase angle dimmer by measuring the half-cycles of the input voltage signal, the comparison of successive half-cycles to determine the difference of half-cycles, and compare the difference of half-cycles with a predetermined threshold difference, and the fact that the difference between the half-cycles is less than a threshold difference, indicates that the waveform of the input voltage signal is symmetric, and the fact that the difference between the half-cycles of the difference exceeds the threshold, indicates that the waveform of the input signal voltage is asymmetrical. Corrective action is implemented if the difference between the half-cycles of the difference exceeds the threshold.

[0015] Used here for the purposes of this disclosure, the term "LED" should be understood in the sense of covering any electroluminescent diode or other type of system on the basis of carrier injection/transport, which is capable of generating radiation in response to an electrical signal. Thus, the term LED includes � yourself but without limitation, various semiconductor structures that emit light in response to current, light emitting polymers, organic light emitting diodes (asid), electroluminescent strips, etc. In particular, the term LED covers the LEDs of all types (including semiconductor and organic light emitting diodes) that may be configured to generate radiation in one or more of the infrared spectrum, ultraviolet spectrum and different parts of the visible spectrum (in the General case, which includes wavelengths from approximately 400 nanometers to approximately 700 nanometers). Some examples of LEDs include, but are not limited to, various types of LED infrared LED ultraviolet radiation, LED red light, LED blue glow, green LED, yellow LED glow, amber LED illumination, LED orange glow and LED white light (discussed later). It is also obvious that the LED can be configured and/or controlled to generate radiation having various bandwidths (e.g., full width at half-maximum or FWHM) for a given spectrum (e.g., narrow band, broad band), and a variety of dominant wavelengths within a given General color classification.

[0016] for Example, one implementation of the LED, configured to generate, for there�, white light (for example, the lighting device based on LED white light) can include some crystals that respectively emit different electroluminescent spectra, which, when mixed together, form essentially white light. In another implementation, the lighting device based on LED white light may be associated with a phosphor material that converts the first, electroluminescent spectrum to a different second spectrum. In one example of this implementation, the electroluminescent radiation having a relatively small wavelength and narrow-band spectrum "pumps" the phosphor material, which, in turn, emits longer-wavelength radiation having a somewhat broader spectrum.

[0017] it should Also be understood that the term LED does not limit the type of physical and/or electrical layout LED. For example, as discussed above, the LED can indicate a single light emitting device having multiple crystals that are configured to emit different spectra of radiation (e.g., subject or not subject to individual control). In addition, the LED can be associated with a phosphor that is considered as the inner part of the LED (for example, some types of white light LED). In General, the term LED may mean�AMB LED in the housing, LED without LED for surface mounting, LED mounting method of the inverted crystal, LED for mounting in a T-configuration, the LED in the radial case, LED in scattering power housing, LED that includes a particular type rjhgecf and/or optical element (e.g., a diffusing lens), etc.

[0018] the Term "light source" should be understood in relation to any one or more different radiation sources, including, but without limitation, the led light sources (including one or more of the above LED), incandescent sources (e.g., filament lamps, halogen lamps), fluorescent sources, phosphorescent sources, gas discharge sources of high intensity (e.g., lamp-based sodium vapor, mercury vapor and metal halide), lasers, other types of electroluminescent sources of radiation, bioluminescent sources (e.g., flames), sociallyessential sources (e.g., gas lamps, carbon arc radiation sources), photo-luminescent sources (e.g., gas discharge sources), cathodoluminescent sources that use electronic saturation, galvanoplastia sources, crystallochemistry sources, chinauniversity sources, thermoluminescent sources, triboluminescent sources, svolume�Essentia sources radio-luminescent sources, and luminescent polymers.

[0019] the Term "lighting fixture" is used here in relation to the implementation or configuration of one or more lighting devices, in particular form factor, Assembly, or layout. The term "lighting device" is used here to refer to the device that includes one or more light sources of the same or different types. This lighting device may have any of a variety of mounting configurations for the source(s) of light, shapes and forms of body/bonnet and/or configurations of electrical and mechanical connections. Additionally, this lighting device, optionally, may be associated with (e.g., include, be connected to and/or placed in the housing together with) various other components (e.g., control circuit) relevance to the source(s) of light. "Led lighting device" means a lighting device which includes one or more discussed above led light sources, separately or in conjunction with other nesuliginami light sources. "Multi-channel" means a lighting device led or nezvladanie a lighting device that comprises at least two light sources, scope�wirowanych, respectively, to generate different spectrums of radiation, in which each individual spectrum of the source can be named "channel" multi-channel lighting unit.

[0020] the Term "controller" is used here in the General case, to describe the individual devices that relate to the work of one or more light sources. The controller can be implemented differently (e.g., in the form of specialized hardware) to perform various functions discussed here. "Processor" is one example of a controller that uses one or more microprocessors that can be programmed using software (e.g., microcode) to perform various functions discussed here. The controller can be implemented with or without using the CPU, and can also be implemented as a combination of dedicated hardware to perform some functions and a processor (e.g., one or more programmed microprocessors and associated circuits) to perform other functions. Examples of controller components that may be implemented in various embodiments of the present disclosure, include, but are not limited to, traditional microprocessors, microcontrollers, specialized INTA�General circuits (ASICS) and gate arrays user-programmable (FPGA).

[0021] In various implementations, the processor and/or controller may be associated with one or more storage media (generally called "memory", for example, volatile and non-volatile computer memory, e.g., random access memory (RAM), permanent memory (ROM), programmable permanent memory (EPROM), electrically programmable permanent memory (EEPROM), electrically erasable and programmable permanent memory (EEPROM), a memory interface, a universal serial bus (USB), floppy disks, CD-ROMs, optical disks, magnetic tape, etc.). In some implementations, the media data can be encoded by one or more programs that, when executed on one or more processors and/or controllers, perform at least some of the functions discussed here. Different media can be an integral part of the processor or controller or may be removable, so that one or more of the stored programs can be loaded into the processor or controller to implement considered various aspects of the present invention. The terms "program" or "computer program" are used here in a General sense, with respect to any type of computer code (e.g., software about�providing or microcode) that can be used for programming one or more processors or controllers.

[0022] Obviously, all combinations of the foregoing concepts and additional concepts discussed in greater detail below (provided such concepts do not contradict each other) should be considered as part of the open here the subject matter. In particular, all combinations of claimed subject matter presented at the end of this disclosure, should be considered as part of the open here the subject matter. It is also clear that terminology explicitly employed here, which can also be present in any disclosure incorporated by reference should correspond to the semantic meaning, most agreed with the disclosures provided here are specific concepts.

Brief description of the drawings

[0023] In the drawings similar reference positions, in the General case, denote identical or similar parts in the different views. In addition, the drawings are not necessarily made to scale, on the contrary, the emphasis in them, in General, made to illustrate the principles of the invention.

[0024] Fig. 1A-1C show nevirapine waveforms and clipped the rectified waveform having symmetrical and asymmetrical half-periods.

[0025] Fig. 2 is a block diagram showing a lighting system with dimming, according to an illustrative embodiment of the.

[0026] Fig. 3A and 3B show waveforms discrete and corresponding digital pulses from an asymmetric half-cycles of the dimmer switch, according to an illustrative embodiment of the.

[0027] Fig. 4 is a block diagram of the sequence of operations showing the process of detecting and correcting improper operation of a lighting system capable of reducing the force of light, according to an illustrative embodiment of the.

[0028] Fig. 5 is a block diagram of the sequence of operations showing the process of identification and implementation of corrective actions, according to an illustrative embodiment of the.

[0029] Fig. 6 is a schematic diagram showing the control circuit for a lighting system according to an illustrative embodiment of the.

[0030] Fig. 7A-7C show waveforms discrete and corresponding digital pulses of a dimmer switch, according to an illustrative embodiment of the.

[0031] Fig. 8 is a block diagram of the sequence of operations showing the process of registration phase angles, according to an illustrative embodiment of the.

Detailed description

[0032] the following detailed description, for purposes of explanation, but not limitation, illustrative embodiments of the disclosing specific details are set forth to provide a full understanding when�standards present invention. However, the specialist in the art familiar with this disclosure, it will be obvious that other variants of the implementation according to the principles of the present invention that differ from the disclosed specific details here, remain within the scope of the following claims. In addition, descriptions of well-known devices and methods may be omitted so as not obscure the description of the illustrative embodiments. Such methods and devices are obviously refers to the volume of the principles of the present invention.

[0033] In General, it is desirable to have a stable light output from the solid state lighting load, for example, led light source, for example, without blinking or uncontrollable fluctuations of light output levels, regardless of dimmer settings. The applicant has established and realized that it would be desirable to provide a scheme that can detect and correct various problems caused by a dimmer switch and solid state lighting load and the corresponding power Converter, energizing the solid state lighting load. In various embodiments, the problems can be identified by identifying asymmetries in positive and negative half-cycles of the mains, for example, due to the interaction�Oia between the electronic transformer or power Converter and dimmer with a cut-off phase.

[0034] in view of the foregoing, various options for implementation and realization of the present invention relate to a circuit and method of detecting and correcting improper operation of solid state lighting devices, caused by asymmetries in positive and negative half-cycles of the mains, by means of digital recording and measuring the phase angle of a dimmer switch, and implementation of corrective action when the difference between successive measurements (e.g., respectively corresponding to positive and negative half-cycles) exceeds a predetermined threshold, indicating asymmetric cutoff phase.

[0035] Fig. 2 shows a block diagram showing a lighting system with dimming, according to an illustrative embodiment of the. According to Fig. 2, the illumination system 200 includes the controller 204 and rectifier circuit 205, which provide a rectified voltage Urect ( subjected to the reduction treatment intensity) from a network source 201 voltage. Network source 201 voltage can provide different nevirapine input voltage, e.g. 100 V, 120 V, 230 V and 277 V AC, according to various implementations. The dimmer 204 is a dimmer with a cut-off phase, for example, which provide�provides the possibility of reducing the light power at the expense of circumcision rear fronts (dimmer with a cut-off phase on the falling edge) front or fronts (dimmer with a cut-off phase on the rising edge) of the waveforms of the voltage signal from a network source 201 voltage in response to vertical movement of slider 204a. In order to review, it is assumed that the dimmer 204 is a dimmer with a cut-off phase on the falling edge.

[0036] In General, the magnitude of the rectified voltage Urect is proportional to the phase angle or the level of dimming set by the dimmer 204, so that a phase angle corresponding to a lower dimmer setting, gives a lower rectified voltage Urect and Vice versa. In the example shown, it can be assumed that the slider 204a is moved down to lower the phase angle, which leads to the decrease of light output of solid state lighting load 240, and is moved up to increase the phase angle, which leads to an increase in the magnitude of light output of solid state lighting load 240. Thus, the least decrease in intensity occurs when the slider 204a is in the upper position (as shown in Fig. 2), and the greatest decrease in intensity occurs when the slider 204a is in a lower position.

[0037] the Illumination system 200 further includes a circuit 210 registration phase angle of a dimmer switch and the Converter 220 power. The circuit 210 registration phase angle includes a microcontroller or other control�ler, discussed below, and is configured to determine or measure the values of phase angle (level dimming) of the illustrative controller 204 based on the rectified voltage Urect. The circuit 210 registration phase angle also compares the registered value of the phase angle corresponding to the positive and negative half-cycles of the rectified voltage Urect, and implements corrective action if the comparison of the positive and negative half-periods indicates that the illumination system 200 is not working properly. For example, registered phase angle can be used as input value to a software-implemented algorithm for determining whether the clipped waveform of the rectified voltage Urect is symmetric (for example, as shown in Fig. 1B) or asymmetric (as shown in Fig. 1C) circumcision. In other words, a determination is made, symmetrical if the clipped waveform, or asymmetric. Asymmetric circumcision testifies to the existence of a problem in the dimmer system-exciter, for example, which includes the dimmer 204 and the inverter 220 power. In various embodiments, the circuit 210 registration phase angle may be further configured to dynamically adjust the operating point conversion�'el 220 power during normal operation on the basis of, partly, registered phase angles, using the signal power control line 229 management.

[0038] In General, the asymmetry in the clipped wave forms, you can register by identifying large differences in the lengths of the pulses of the phase angle generated by the circuit 210 registration phase angle, from positive half cycle to the negative half-cycles. For example, Fig. 3A and 3B show a clipped waveform from the dimmer 204 and rectifier circuit 205 corresponding to the positive and negative half-cycles of the rectified voltage Urect and corresponding digital pulses generated by the circuit 210 registration phase angle, according to an illustrative embodiment of the. As shown in Fig. 3B, the length of the second digital pulse 332b significantly less than the length of the first digital pulse 331b, and this suggests that the wave form 332a negative half-wave of cropped stronger, waveform 331a of the immediately preceding positive half cycle, as shown in Fig. 3A.

[0039] Typically, when a user manually operates the dimmer 204, moving the slider 204a, it has a very slow and gradual impact on the difference between positive and negative half-cycles. Thus, a more abrupt transition from one period to another period�, it is shown, for example, Fig. 3A and 3B, is recognized as wrong. According to the embodiment of the implementation, you can set the threshold difference, for example, on the basis of empirical measurements, which indicates the upper limit of acceptable difference between positive and negative half-cycles. For example, the threshold difference may be the point at which flicker occurs due to asymmetric wave forms. As discussed below with reference to Fig. 4, the circuit 210 registration phase angle (for example, using a microcontroller or other controller) may compare the difference between digital pulses of positive and negative half-cycles with the threshold difference, and to identify instances of improper operation, when the difference exceeds the threshold difference.

[0040] Since the asymmetric waveform indicates the presence of multiple potential problems, each of which leads to undesirable flickering of the light emitted by the solid state lighting load 240, to solve the problem, you can use various corrective actions or methods under the control circuit 210 registration phase angle. For example, the circuit 210 registration phase angle may include a resistor network voltage divider (not shown in Fig. 2) connected in parallel with the solid-state light�the diesel load 240, to increase the current consumption of the solid state lighting load 240, thus increasing the load to a sufficient minimum necessary for the operation of the dimmer 204. If this action does not fix the flickering or does not eliminate its causes can take other corrective action. Corrective actions can be taken in a predetermined priority order, for example, starting with that which leads to success more likely and ending with the one that leads to success with the least probability, while one of the corrective actions will not work. However, if none of the corrective action does not lead to success, then the circuit 210 registration phase angle can simply disable the inverter 220, the power control signal power, transmitted via line 229 management because the lack of light can be more desirable than a flickering light. For example, the circuit 210 registration phase angle can control the Converter 220 power so that he had not filed a current to the solid state lighting load 240, or may be coupled to the Converter 220 power off command.

[0041] the Converter 220 power receives the rectified voltage Urect from the rectifier circuit 205 and the signal power control line 229, and then outputs a corresponding DC voltage to supply power to the solid state lighting load 240. In the General case, the Converter 220 provides power conversion between the rectified voltage Urect and the DC voltage on the basis of at least the magnitude of the rectified voltage Urect and the value of control signal power received from the circuit 210 registration phase angle. The DC voltage delivered from Converter 220 power, thus, reflects the rectified voltage Urect and the phase angle of a dimmer switch, applied by the dimmer 204. In various embodiments, the Converter 220 operates in open loop or feed mode in the forward direction, as described, for example, in U.S. patent No. 7,256,554 issued Lys, which is included here by reference.

[0042] In various embodiments, the control signal power may be a signal of pulse width modulation (PWM), for example, which switches between high and low levels in accordance with the selected duty cycle. For example, the signal power control can have a high fill factor (e.g., 100 percent), the corresponding maximum on-time (large phase angle) of the dimmer 204, and a low fill factor (e.g., 0 percent) the minimum on-time (low phase angle) of the dimmer� 204. When the dimmer 204 is installed between the maximum and minimum phase angles, the circuit 210, the phase angle determines the duty cycle of power control, which specifically corresponds to the registered phase angle.

[0043] Fig. 4 shows a block diagram of the sequence of operations showing the process of detecting malfunction of the lighting system capable of reducing the force of light, according to an illustrative embodiment of the. The process can be implemented, for example, by firmware and/or software executed by the circuit 210 registration phase angle, shown in Fig. 2 (or the microcontroller 615, shown in Fig. 6, discussed below).

[0044] for purposes of explanation, we can assume that Fig. 4 begins at step S410, when the switch turns on the lighting system 200. In step S410, there is a delay until the rectified input voltage Urect network reaches a steady state. After the time delay, the initial value of the phase angle is determined and is stored as the level of the previous half-cycle at step S420. For example, the initial value of the phase angle can be determined simply by registering phase angle, according to the process discussed below with reference to step S430. Alternative,�social value of the phase angle can be determined according to other processes or can be removed from memory where the previously defined phase angle, for example, from a previous session of the lighting system 200, without deviation from the scope of the present invention.

[0045] In the process shown by the step S430, the circuit 210 registration phase angle phase angle registers, to determine or measure a different value of phase angle. In various embodiments, the phase angle is registered by obtaining a digital pulse corresponding to each truncated waveform of the rectified input voltage Urect network, for example, according to the algorithm discussed below with reference to Fig. 6-8. Thus, for each positive half cycle and each negative half cycle of the digital pulse is generated, as shown in Fig. 3A and 3B. Of course, the value of the phase angle can be determined according to other processes, without deviation from the scope of the principles of the present invention.

[0046] Registered phase angle is stored as the level of the current half-cycle at step S440. The level of the previous half cycle level and the current half-cycle can be stored in memory. For example, the memory may be external memory or memory that is internal to the circuit 210 registration phase angle and/or the microcontroller or other controller included in the circuit 210 registration phase angle, as RAS�being finished below with reference to Fig. 6. In various embodiments, the values of the level of the previous half cycle level and the current half-cycle can be used to populate tables or can be stored in a relational database for comparison, although it is possible to use a different tool storage level of the previous half cycle level and the current half-cycle without deviation from the scope of the present invention. In addition, in various embodiments, the phase angle value registered in step S430, it is possible to use circuit 210 registration phase angle to generate a control signal power, which is supplied to the controller 220 power to set the operating point of the controller 220 power, thereby further control the light output of the solid state lighting load 240 on the basis of various other control criteria.

[0047] the Difference ΔDim between the level of the current half cycle and the previous half-cycle is determined in step S450, for example, by subtracting the level of the current half-cycle from the previous half cycle, or Vice versa. Then the difference ΔDim is compared with a predetermined threshold difference ΔThreshold in step S460 to determine whether the waveform is asymmetric, for example, indicating a malfunction of the dimmer 204 and/or Converter 220 power and�and incompatibility between them. When the difference ΔDim exceeds the threshold ΔThreshold (step S460: Yes), indicating asymmetric waveforms, the process specified step S480, is to identify and implement appropriate corrective actions to resolve the problem, leading to asymmetry of the waveforms. This process is described below with reference to Fig. 5. When the difference ΔDim does not exceed the threshold ΔThreshold (step S460: No), indicating that the waveform is essentially symmetrical, the level of the current half cycle just saves it as the level of the previous half-cycle at step S470. The process then returns to step S430 to re-determine the phase angle, and the process specified steps S440-S480 are repeated.

[0048] In Fig. 5 shows a block diagram of the sequence of operations showing the process of identifying and implementing corrective actions in response to the detection of asynchronous waveforms, according to an illustrative embodiment of the. The process can be implemented, for example, by firmware and/or software executed by the circuit 210 registration phase angle, shown in Fig. 2 (or the microcontroller 615, shown in Fig. 6, or another controller, discussed below).

[0049] In various embodiments, optionally, one or more corrective actions available for implementation. �korrektiruyushiye actions can be ranked in order from highest priority to lowest, where corrective action with the highest priority is a corrective action, as previously defined with the greatest probability of leading to successful correction of the asymmetric waveform. The ranking, together with the relevant steps that are performed to implement each corrective action may be stored in memory. For example, the memory may be external memory or memory that is internal to the circuit 210 registration phase angle and/or the microcontroller or other controller included in the circuit 210 registration phase angle, as discussed below with reference to Fig. 6. Corrective action with highest priority may include the inclusion of a resistive voltage divider circuit connected in parallel with the solid state lighting load 240, for example, to increase the work load of the dimmer 204 to a sufficient minimum load. Resistor network voltage divider may include resistance, serially connected switch (e.g. a transistor), for example, to selectively increase the current consumption. One or more additional corrective actions, the implementation of which is apparent to a person skilled in the art, may be assigned a lower priority than corrective �eastview through a resistive divider circuit voltage. In addition, priority can be assigned to one or more variations of the same corrective action. For example, the implementation of a resistive voltage divider circuit can be repeated using gradually increasing resistance values until you find the proper value.

[0050] According to Fig. 5, in step S481, it is determined whether by the use of corrective action. In the absence of a ready to use corrective action (step S481: No), corrective action with the highest priority is carried out in step S482, and the process returns to step S470 shown in Fig. 4, where the level of the current half-cycle is stored as the level of the previous half cycle. The process then returns to step S430 to re-determine the phase angle as the level of the current half cycle, a subsequent comparison with the previous half-cycle in steps S450 and S460 specifies qualify the success of corrective action performed in step S482. From a practical point of view, one or more half-cycles can be evaluated after the implementation of corrective actions, corrective action could become effective prior to the determination of the success of this action.

[0051] Returning to Fig. 5, when it is determined that corrective action is ready �primeneniy (step S481: Yes), in step S483, it is determined whether any corrective action that can be taken. In the presence of at least one of the remaining corrective action (step S483: Yes), corrective action priority, the next highest, is carried out in step S485, and the process returns to step S470 shown in Fig. 4, as discussed above.

[0052] If the corrective actions are no more (step S483: No), the inverter 220 power is disconnected in step S486, to avoid flickering of the light emitted by the solid state lighting load 240, or other adverse impact of improper operation. The process then returns to step S470 shown in Fig. 4, where the monitoring process can be repeated, despite the disconnection of the inverter 220 power. Although not shown in Fig. 4 and 5, in various embodiments, the Converter 220 power can be restarted if a subsequent comparison between the levels of the current and previous half-periods indicate that the difference ΔDim falls below the threshold ΔThreshold that may occur in response to additional adjustment to the level of dimming, for example, by manipulation of the slider 204a.

[0053] In various embodiments, each time you turn on the power to the lighting system 200, a transformation�fir 220 power is switched on, and no corrective actions were not ready to use. In other words, any corrective action that could be activated in the previous session of the lighting system 200, is interrupted when off of the lighting system 200. Similarly, any determination that the flicker cannot be corrected with corrective action resulting in disconnection of the inverter 220 power, not transferable to subsequent sessions of the lighting system 200. Of course, in alternative embodiments, corrective action and/or for disconnecting the inverter 220 power may be transferred or otherwise taken into account in the subsequent work sessions, without deviation from the scope of the present invention. For example, if it is discovered that a particular corrective action to adequately address the problem of flickering of the light emitted by the solid state lighting load 240, the ranking by priority available corrective actions can be reordered so that successful corrective action has the highest priority.

[0054] in addition, Fig. 4 presents an implementation option, in which the process is carried out continuously during operation of the lighting system 200. However, in alternative embodiments, about�ESS, shown in Fig. 4 may be carried out only during the initial launch period, during which the difference ΔDim between the level of the current half cycle and the previous half-cycle is determined and compared to a threshold difference ΔThreshold, on the basis of the registered values of the phase angle. If corrective actions are established and implemented in response to the comparison (i.e., the waveform of the input signal voltage is symmetric), then the process ends, and the illumination system 200 operates in response to the dimmer 204 without additional analysis of the difference ΔDim between the levels of the current and previous half-cycles. Similarly, in the event the identification and successful implementation of corrective action (i.e., in response to the waveform of the input signal voltage, which is asymmetric), the process ends, and the illumination system 200 operates in response to the dimmer 204 using corrective action without further analysis of the difference ΔDim between the levels of the current and previous half-cycles. Thus, corrective action, for example, the inclusion of a resistive voltage divider circuit, is carried out to solve in the remainder of the session without the cost of additional computing power to conduct additional checks.

p> [0055] In Fig. 6 shows a schematic diagram showing the control circuit for a lighting system capable of reducing the force of light, which includes a reception circuit phase angle, the power Converter and solid-state lighting device, according to an illustrative embodiment of the. The total of the components shown in Fig. 6, similar to that shown in Fig. 2, although additional details are provided regarding various illustrative components, in accordance with an illustrative configuration. Of course, you can implement other configurations without departing from the scope of the principles of the present invention.

[0056] referring to Fig. 6, diagram 600 of management includes a rectifier circuit circuit 605 and 610 registration phase angle (dashed rectangle). As discussed above in relation to the rectifier circuit 205, a rectifier circuit 605 is connected to the dimmer switch, connected between the rectifier circuit 605 and the network voltage source for receiving nevirapine voltage (subjected to the reduction treatment intensity), subjected to specified processing dimming inputs "under voltage" and "neutral". In the described configuration, the rectifier circuit 605 includes four diodes D601-D604, connected between the node N2 of the rectified voltage and the ground. The node N2 of wypr�lennogo voltage receives the rectified voltage Urect, and connected to ground through the input filter capacitor C615, connected in parallel to the rectifier circuit 605.

[0057] the Circuit 610 registration phase angle performs the registration process of the phase angle based on the rectified voltage Urect. Phase angle, corresponding to the level of dimming set by the dimmer, shall be registered on the basis of the degree of cutoff phase present in the waveforms of the rectified voltage Urect. Converter 620 power controls the operation of the led load 640, which includes illustrative LED 641 and 642 connected in series, based on the rectified voltage Urect (RMS input voltage) and, in various embodiments, signal power control, issued by the circuit 610 registration phase angle on line 629 management. This allows the circuit 610 registration phase angle to adjust power supplied from Converter 620 power led on the load 640. The signal power control may be, for example, PWM signal or another digital signal. In various embodiments, the transmitter 620 operates in open loop or feed mode in the forward direction, as described, for example, in U.S. patent No. 7,256,554 issued Lys, which is included here through�your links.

[0058] In the illustrative embodiment, the implementation, the circuit 610 registration phase angle includes a microcontroller 615, which uses waveforms of the signal of the rectified voltage Urect to determine the phase angle. The microcontroller 615 includes a digital input 618 connected between the first diode D611 and second diode D612. The anode of the first diode D611 connected to the digital input 618, and a cathode connected to the source voltage Vcc, and the anode of the second diode D612 connected to ground and the cathode connected to the digital input 618. The microcontroller 615 also includes a digital output 619.

[0059] In various embodiments, the microcontroller 615 may be, for example, PIC12F683, manufacturing, Microchip Technology, Inc., and Converter 620 power may represent an L6562, ST Microelectronics production, although other types of microcontrollers, power converters or other processors and/or controllers may be included without departing from the scope of the present invention. For example, the functionality of the microcontroller 615 can be implemented by using one or more processors and/or controllers connected to receive digital input signal between the first and second diodes and D611 D612, as discussed above, which can be programmed using software or hardware components (e.g., stored in memory) to implement various functions described here, or can be implemented as a combination of dedicated hardware to perform some functions and a processor (e.g., one or more programmed microprocessors and associated circuits) to perform other functions. Examples of controller components that may be implemented in various embodiments, include, but are not limited to, traditional microprocessors, microcontrollers, ASIC and FPGA, as discussed above.

[0060] the Circuit 610 registration phase angle further includes various passive electronic components, for example, the first and second capacitors C613 and C614, and resistance, specified illustrative first and second resistors R611 and R612. A first capacitor C613 is connected between the digital input 618 of the microcontroller 615 and the node N1 of registration. The second capacitor C614 connected between the node N1 of registration and the earth. First and second resistors R611 and R612 are connected in series between the node N2 of the rectified voltage and the node N1 of registration. In the illustrated embodiment, the implementation, the first capacitor C613 may have a value of about 560 pF and the second capacitor C614 may have a certain value, for example, about 10 pF. In addition, the first resistor R611 can have a nominal value of about 1 Mω and second �of resistor R612 may have a certain value, for example, about 1 MOhm. However, the corresponding values of the first and second capacitors C613 and C614, and first and second resistors R611 and R612 is possible to vary to provide unique benefits for any particular situation or to meet the design requirements, depending on the specific application of different implementations, which is obvious to the person skilled in the technical field.

[0061] the Rectified voltage Urect is the AC voltage supplied on digital input 618 of the microcontroller 615. The first resistor R611 and a second resistor R612 limit the current flowing in the digital input 618. When the waveforms of the rectified voltage Urect is increased, the first capacitor C613 is charging to the forefront through the first and second resistors R611 and R612. The first diode D611 captures the digital input 618 of one drop of the diode above the source voltage Vcc, for example, while the first capacitor C613 is charging. A first capacitor C613 stays charged until the waveform signal reaches zero. On the back front of the waveform signal of the rectified voltage Urect, the first capacitor C613 is discharged through the second capacitor C614, and digital input 618 is fixed by the second diode D612 one drop on the diode below ground. When you use a dimmer switch with a cut-off phase trailing edge, the trailing edge of the waveform signal according�of tstuat the beginning of the clipped part of the waveform. A first capacitor C613 remains discharged until the wave form of the signal is zero. Accordingly, the resulting digital pulse logic level on the digital input 618 behaves in full accordance with the movement of the circumcision of the rectified voltage Urect, examples of which are shown in Fig. 7A-7C.

[0062] In particular, Fig. 7A-7C show waveforms discrete and corresponding digital pulses at the digital input 618, according to an illustrative implementation options. The top waveform in each figure depict cropped rectified voltage Urect, where the degree of circumcision reflects the level of dimming. For example, the waveform may represent part of the full peak of 170 In (or 340 In the EU) rectified sine wave that is output by the dimmer. The lower rectangular waveforms depict the corresponding digital pulses observed on the digital input 618 of the microcontroller 615. Note that the length of each digital pulse corresponds to the clipped waveform and, thus, equal to the on time of the dimmer (e.g., time during which the internal dimmer switch is in the switching state). Taking digital pulses through the digital input 618, the microcontroller 615 may determine the level set in the controller.

[0063] N� Fig. 7A shows the waveform of the pixels of the rectified voltage Urect and corresponding digital pulses when the dimmer is set near its maximum setting, the specified upper position of the slider dimmer shown next to the waveforms. Fig. 7B shows the waveform of the pixels of the rectified voltage Urect and corresponding digital pulses when the dimmer is set on the medium setting, the specified average position of the slider dimmer shown next to the waveforms. Fig. 7C shows the waveform of the pixels of the rectified voltage Urect and corresponding digital pulses when the dimmer is set near its minimum setting, this lower position of the slider dimmer shown next to the waveforms.

[0064] In Fig. 8 shows a block diagram of the sequence of operations showing the process of registration phase angle of a dimmer switch, according to an illustrative embodiment of the. The process can be implemented by firmware and/or software executed by the microcontroller 615, shown in Fig. 6, or, more generally, a processor or controller, for example, circuit 210 registration phase angle, as shown, for example, Fig. 2.

[0065] In step S821, shown in Fig. 8, the leading edge qi�digital pulse input signal (for example, specified front edges of the lower waveforms in Fig. 7A-7C) is registered, for example, the initial charging of the first capacitor C613. Sampling on the digital input 618 of the microcontroller 615, for example, begins at step S822. In the illustrated embodiment, implementation, discretize the signal digitally within a predetermined amount of time, smaller half cycle of the mains. Every time when the sampling signal, in step S823, it is determined whether the discrete high level (e.g., a digital "1") or low level (e.g., a digital "0"). In the illustrated embodiment, the implementation, in step S823, a comparison is made to determine whether the discrete digital "1". When discrete is a digital "1" (block S823: Yes), the counter increases the count in step S824, and when the unit is not a digital "1" (block S823: No), in step S825 introduces a small delay. The delay is introduced so that the number of periods of a clock signal (for example, the microcontroller 615) was the same regardless of whether there was a discrete digital "1" or digital "0".

[0066] In step S826, it is determined that the half-period of the mains was discretized. If the half-period of the mains supply is not full (step S826: No), the process returns to step S822 to re-sample the signals on the digital input 618. If �ulupelit supply network is full (step S826: Yes), sampling stops and the counter value is accumulated in step S824, is identified as the current value of the phase angle in step S827, and the counter is reset to zero. The counter value may be stored in memory, examples of which are discussed above. Then, the microcontroller 615 may be waiting for the next front to again start the discretization. For example, it can be assumed that the microcontroller 615 takes the 255 discrete unit during the half cycle of the mains. When the phase angle of the dimmer is set using the slider near the upper boundary of its range (for example, as shown in Fig. 7A), the counter will increase to about 255 in step S824, shown in Fig. 8. When the phase angle of the dimmer is set using the slider near the lower boundary of its range (for example, as shown in Fig. 7C), the counter will increase only up to about 10 or 20 in step S824. When the phase angle of a dimmer switch installed somewhere in the middle of its range (for example, as shown in Fig. 7B), the counter will increase to about 128 in step S824. Thus, the value of the counter gives the microcontroller 615 accurate indication of the level set in the dimmer, or phase angle of a dimmer switch. In various embodiments, the value of the phase angle can be calculated, for example, the microcontroller 615, using�amount of force of a predetermined function of the counter value, moreover, the function may vary to provide unique benefits for any particular situation or to meet the design requirements, depending on the specific application of different implementations, which is obvious to the person skilled in the technical field.

[0067] Returning to Fig. 6, the microcontroller 615 may also be configured to detect improper operation of the dimmer (not shown) and/or Converter 620 power, resulting in the led load 640 emits a flickering light, and to identify and implement corrective actions, as discussed above with reference to Fig. 4 and 5. In the example shown, the circuit 600 management includes illustrative resistive circuit 650 voltage divider, which, for purposes of explanation, presumably performs corrective action with highest priority. Resistive circuit 650 voltage divider includes a resistor 652, connected in series with a switch, shown as a transistor 651. The transistor 651 is shown in the form of a field effect transistor (FET), for example, field-effect transistor with the structure of metal-oxide-semiconductor (MOSFET) or a field-effect transistor based on gallium arsenide (GaAs FET), although a specialist in the art may use other types of FET and/or other types of transistors, without departing from �volume of the present invention.

[0068] the Gate of the transistor 651 is connected to the microcontroller via line 615 659 management. Thus, the microcontroller 615 is able to selectively unlock the transistor 651 to enable resistive circuit 650 voltage divider (e.g. in accordance with step S482, shown in Fig. 5) and lock the transistor 651 to turn off resistive circuit 650 voltage divider, for example, to implement corrective actions, in priority, the next highest (for example, in accordance with the step S485, shown in Fig. 5). Unlocking the transistor 651, the resistance of the resistor R652 is connected in parallel to the led load 640 to increase current consumption and to increase the work load of the dimmer. In addition, as discussed above, when the correction(s) action(s) involving the implementation of a resistive circuit 650 voltage divider, not succeed, the microcontroller 615 may be configured to disable the Converter 620 power, for example, on line 629 management. In addition, the microcontroller 615 may be configured to perform one or more additional control algorithms to dynamically adjust the operating point of the inverter 620 power based at least in part, the registered phase angles, using the control signal power� on line 629 management.

[0069] In the General case, it is assumed that the incompatibility between pathogens (e.g., power converters) and the dimmers with a cut-off phase is not causing flickering of the light emitted by the solid state lighting device. According to different variants of implementation, the process detects the incorrect work, trying to adjust her and turns off the light output of the solid state lighting device (e.g., by disconnecting the power Converter), if the attempts have not led to the correction of incorrect operation. Accordingly, the flicker can be eliminated, and a power Converter capable of operating with various dimmer switches, not limited to possible incompatibility.

[0070] In various embodiments, the functionality of the circuit 210 registration phase angle and/or the microcontroller 615 may, for example, implemented by one or more processing circuits formed by any combination of hardware, software and hardware or software architectures, and may include its own memory (e.g., nonvolatile memory) for storing executable software/executable hardware and software code, allowing to carry out various functions. For example, the functionality can be implemented � ASIC, FPGA, etc.

[0071] the Detection and correction of improper operation of a dimmer switch, for example, the specified asymmetric positive and negative half-cycles of the input signal voltage, can be used with any step-down power Converter with solid-state (e.g., led) lighting load by a desire to avoid flickering of the light or, otherwise, to increase compatibility with various dimmer switches with a cut-off phase. The reception circuit phase angle, according to different variants of implementation, can be implemented in various led light sources. In addition, it can be used as a building block intelligent enhancements of various products to make them more attuned to the decrease of luminous intensity.

[0072] Although there have been described and illustrated with multiple embodiments of the invention, the specialists in this field of technology can offer various other tools and/or structure for implementing the functions and/or obtaining the results and/or one or more of the advantages described herein, and each of such variations and/or modifications correspond to the extent described herein of embodiments of the invention. More generally, specialists in the art it is obvious that all described here �he items dimensions, materials and configurations shown in the illustration, and that the actual parameters, dimensions, materials and/or configurations will depend upon the particular application or applications that make use of the principles of the invention.

[0073] the Specialists in the art will be able to understand or set using nothing more than standard experimental work, many equivalents to the specific embodiments described herein of the invention. Thus, it should be understood that the above implementation options are presented solely by way of example, and that, in the scope of the following claims and its equivalents, variants of the invention can be applied in practice otherwise than specifically described and claimed. Embodiments of the invention the present disclosure relate to each individual described here feature, system, article, material, kit and/or method. In addition, any combination of two or more such features, systems, articles, materials, kits and/or methods, if such features, systems, articles, materials, kits and/or methods do not contradict each other, is included in the scope of the present invention disclosure.

[0074] All of the definitions referred to and used herein, should be understood when using �of predeleny in the dictionary definitions in the documents included in this document by reference, and/or ordinary meanings of certain terms.

[0075] the names of the elements in the singular used here in the description and in the claims, unless explicitly stated otherwise, should be understood in the sense of "at least one". Used here in the description and in the claims the expression "at least one", in relation to the list of one or more elements, should be understood in the sense of at least one element selected from any one or more elements in the list elements, but not necessarily including at least one of each and every element specifically listed within the list of elements and not excluding any combinations of elements in the list elements. This definition also allows that, optionally, may contain elements other than the items specifically identified in the list of elements to which the phrase "at least one" associated or not associated with specifically identified elements. Thus, in the order of non-restrictive example, "at least one of A and B" (or, equivalently, "at least one of A or B," or, equivalently "at least one of A and/or B") can refer, in one� variant of implementation, to at least one, optionally including more than one, A, in the absence of B (and optionally including elements other than B); in another variant implementation, at least one, optionally including more than one, B, in the absence of A (and optionally including elements other than A); in yet another variant implementation, at least one, optionally including more than one, A, and, at least one, optionally including more than one, B (and optionally including other elements); etc.

[0076] it should Also be understood that, unless explicitly stated otherwise, any of the claimed methods, which include more than one step or operation, the order of the steps or actions of a method is not required to be limited to the order in which the stages or steps of the method mentioned. In addition, any reference position or other characters that are enclosed in parentheses, are present in the claims provided for convenience only and are not intended in any way to limit the claims.

[0077] In the claims and in the above description of the invention, all transitional expressions, such as "containing", "including", "carrying", "having", "with", "contains", "educated" � etc. it should be understood non-restrictively, i.e. in the sense of "including, but without limitation". Only the transitional phrase "consisting of" and "consisting essentially of" should be or restrictive, partially restrictive transitional expressions, respectively.

1. Method of detecting and correcting improper operation of a lighting system including a solid state lighting load, the method contains the stages at which
determine first and second values of the phase angle of a dimmer connected to the power Converter, enticing solid state lighting load, the first and second values correspond to successive half-cycles of the input signal voltage,
determine the difference between the first and second values and
implement the selected corrective action when the difference exceeds the threshold difference, indicating asymmetric waveforms of the input signal voltage.

2. A method according to claim 1, wherein during the implementation phase of the selected first corrective action:
determine whether actively already corrective action, and
carry out corrective action with highest priority as the selected corrective action when it is determined that no corrective action is not yet active.

3. �p on p. 2, in which at the stage of implementation of the selected remedial action is optional
determine whether at least one other corrective action when it is determined that corrective action is already active.

4. A method according to claim 3, in which at the stage of implementation of the selected remedial action is optional
carry out corrective action with the next highest priority as the selected corrective action when it is determined that available at least one other corrective action.

5. A method according to claim 3, additionally containing a stage at which
disconnect the power Converter when it is determined that at least one other corrective action is not available.

6. A method according to claim 5, further comprising stages on which:
determined third and fourth values of the phase angle of a dimmer switch, and the third and fourth values correspond to successive half-cycles of the input signal voltage,
determine the difference between the third and fourth values and
activate the power Converter when it is determined that the difference between the third and fourth values less than the threshold difference, indicating a symmetrical waveform of the input signal voltage.

7. A method according to claim 1, wherein the step of determining lane�first and second values of the phase angle:
discretize into digital pulses corresponding to the waveforms of the input signal voltage, and
determine the length obtained by sampling digital pulses, and the length correspond to the level of dimming dimmer.

8. A method according to claim 1, wherein the corrective action includes the incorporation of a resistive voltage divider circuit in parallel with the solid state lighting load.

9. A method according to claim 1, wherein the step of determining the difference between the first and second values:
keep the first value as the level of the previous half cycle,
retain the second value as the level of the current half cycle and
subtract the stored level of the current half cycle and the previous half period.

10. A method according to claim 1, wherein implementing the selected corrective action when the difference exceeds the threshold difference, eliminates flicker of light issued by the solid state lighting load.

11. System for controlling the power supplied to the solid state lighting load, and the system contains:
the dimmer connected to a network voltage source and configured for the controlled reduction of light output of solid state lighting load,
a power Converter configured to excite tverdal�th the lighting load in response to the rectified input voltage signal, coming from a network source voltage, and
the reception circuit phase angle, configured to register the phase angle of a dimmer switch having successive half-cycles of the input voltage signal, for determining the difference between successive half-cycles and to implement corrective action when the difference exceeds the threshold difference, indicating asymmetric waveforms of the input voltage signal.

12. A system according to claim 11, in which the power Converter operates in open loop or feed mode in the forward direction.

13. A system according to claim 11, in which the reception circuit phase angle phase angle registers by sampling digital pulses corresponding to the waveforms of the input voltage signal, and measuring successive half-periods on the basis of the lengths obtained by sampling digital pulses.

14. A system according to claim 13, in which the reception circuit of the phase angle determines the difference between successive half-cycles by subtracting the lengths obtained by sampling digital pulses corresponding to successive half-cycles, respectively.

15. A system according to claim 11, in which the reception circuit phase angle contains:
a processor having a digital input,
a first diode connected between the digital input and the source�m voltage,
a second diode connected between the digital input and ground,
a first capacitor connected between the digital input and node registration,
a second capacitor connected between the node registration and the earth, and
resistance connected between the node registration and a rectified voltage node, which receives the rectified input voltage,
wherein the processor is configured to sample the digital pulses corresponding to the waveforms of the input voltage signal on the digital input and to measure successive half-periods on the basis of the lengths obtained by sampling digital pulses.

16. A system according to claim 11, in which the reception circuit phase angle is additionally configured to select corrective actions with the highest priority.

17. A system according to claim 16, in which the reception circuit phase angle is additionally configured to disable the Converter output when the selected corrective action is performed, but the difference between successive half-cycles continues to exceed the threshold difference.

18. The way to eliminate the flicker of the light issued by the light-emitting diode (LED) light source generated by the power Converter in response to the dimmer with a cut-off phase, the method contains the stages at which:
register �gas angle dimmer by measuring the half-cycles of the input signal voltage,
compare successive half-cycles to determine the difference of half-cycles,
compare the difference between the half-cycles with a predetermined threshold difference, and the fact that the difference between the half-cycles is less than a threshold difference, indicates that the waveform of the input voltage signal is symmetric, and that the difference between the half-cycles of the difference exceeds the threshold, indicates that the waveform of the input voltage signal is asymmetric, and
carry out corrective action when the difference between the half-cycles of the difference exceeds the threshold.

19. A method according to claim 18, further comprising stages on which:
compare the difference of half-cycles with a predetermined threshold difference after the implementation of corrective actions and
perform other corrective action when the difference between the half-cycles exceeds the threshold difference, and other corrective action is available for the implementation.

20. A method according to claim 19, additionally containing a stage at which
disconnect the power Converter, when the difference of half-cycles exceeds the threshold difference, and other corrective action is not available for implementation.



 

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FIELD: electricity.

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10 cl, 4 dwg

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FIELD: electricity.

SUBSTANCE: invention relates to lighting. Result is ensured by that the lighting device contains multiple LEDs connected in series. In the lighting device the first set of LEDs has first type LEDs, having first output of the light flow decrease as first function of the junction temperature. The second set of LEDs has second type LEDs having second output of the light flow decreased as second function of their junction temperature that differs from the first function. At least one first type LED and one second type LED are connected in parallel to the resistors set with resistance depending on the temperature. The resistance temperature dependence stabilizes ratio of the first light flow output to the second light flow output at different junction temperatures of the first set of LEDs and second set of LEDs.

EFFECT: prevention of change of ratio of light flow output of various types LEDs as part of same lighting device.

13 cl, 11 dwg

FIELD: electricity.

SUBSTANCE: invention relates to lighting engineering. Lighting installation (1) comprises input pins (2) for connection to alternating current (AC) network; a circuit (10) of light-emitting diodes (LED) connected in series with input pins; rectifier (30) with input pins (31, 32) connected in series with LED circuit, controllable voltage source (40) with input pins coupled to output pins of the rectifier; in-series assembly of at least one auxiliary LED (51) and the second ballast resistor (52) coupled to output pins of the controllable voltage source. Voltage source comprises in-series assembly of the fist controllable resistor (46) and the second resistor (47) coupled in parallel to input pins; controllable semiconductor stabilitron connected in parallel to output pins, which has input pin (48) connected at connection point between two resistors; at that positive output pin is connected to positive input pin while negative output pin is connected to negative input pin.

EFFECT: simplified regulation of the device in regard to luminous power and luminous efficiency shift to lower colour temperature.

7 cl, 2 dwg

Led circuit // 2550496

FIELD: electricity.

SUBSTANCE: invention relates to lighting engineering. In LED circuits (1) comprised of in-series first and second circuits (11, 12) with the first and second LEDs; the third circuits (13) are connected in parallel to the second circuits (12) to control the first LEDs in the first circuits (11) and /or third LEDs in the fourth circuits (14). The LED circuit (1) receives supply voltage from a power supply source (2, 3) supplying the LED circuit (1). The third circuit (13) receives supply voltage from the second circuit (12) supplying the third circuit (13). Supply voltage may be represented as voltage in the second circuit (12). The third circuit (13) may control the second LEDs in the second circuit (12) additionally. The above control may contain control unit for current passing through the above LEDs in order to turn light down, suppress light blinking, to adjust light and/or to protect overheating.

EFFECT: improving control efficiency.

13 cl, 5 dwg

FIELD: mechanics, physics.

SUBSTANCE: device to excite electroluminescence consists of input unit connected in series with microprocessor unit, sinusoidal oscillation generator, amplitude-frequency response corrector, step-up transformer and exciting electrodes furnished with plates for the specimen to be placed there between. Note that the said exciting electrodes are optically coupled with the photo receiver connected with the ADC which, in its turn, is connected with the microprocessor unit. The latter is connected to the display unit and amplitude-frequency response corrector, while the sinusoidal oscillation generator is connected via a feedback loop with the microprocessor unit.

EFFECT: simpler design, smaller sizes, brightness correction in wide frequency range.

3 dwg

FIELD: physics.

SUBSTANCE: fluorescent tube fitting device has a light-emitting diode element (4) which includes at least one electric starter element (4.1) connected to at least one phase conductor and also connected to at least one neutral wire at least through one conductor (4.2) having at least one light-emitting diode (4.3).

EFFECT: reduced need to replace fluorescent tubes in fittings and reduced electrical power consumption.

3 cl, 2 dwg

FIELD: physics.

SUBSTANCE: invention relates to a light-emitting device (1) having an exciter (10) and a flat light-emitting element (20), where the exciter (10) is connected to a source (2) and a the light-emitting element (20), and where the light-emitting element (20), which has internal capacitance (21), is connected to the said exciter (10) so that the internal capacitance (21) serves as the passive output filter of the exciter (10).

EFFECT: design of a light-emitting device with smaller thickness.

10 cl, 9 dwg

FIELD: physics.

SUBSTANCE: proposed illuminator 10 built around LEds comprises assemblage of LED different-colour light sources 14 to produced mixed-colour light and LED source control device to control said sources in compliance with preset values. Note here that first control data are generated by, at least, one colour transducer 22. Illuminator differs from known designs in that its incorporates device 30, 32 designed to determine the temperature of each LED light source and device 26 to compensate for preset values in compliance with second control data including LED light source temperature.

EFFECT: higher stability of operation.

20 cl, 2 dwg, 1 tbl

FIELD: physics.

SUBSTANCE: invention relates to a device for powering luminous elements, having an energy supply unit (12), a first luminous element (30), having a first colour, preferably white, a second and a third luminous element (34, 38), having a second and a third colour, preferably for adjusting the colour of the first luminous element, and a controlled switch (42), connected in series to the said third luminous element (38). Said serial connection from the said third luminous element (38) and said switch is connected in parallel to the said second luminous element (34). The energy supply device is characterised by that the said energy supply unit (12) has a third and a second output (20, 22). The said first luminous element (30) is connected to the said first lead (20) and the said second and third luminous elements (34, 38) are connected to the said second led (22), the said energy supply unit (12) is configured to provide controlled, preferably independently controlled, output signals on the said first and second leads (20, 22), and the said second and third luminous elements (34, 38) and the said energy supply unit (12) are configured in such a way that, the said third luminous element (38) emits light when the switch (42) is closed. The invention also relates to a method of powering the luminous elements.

EFFECT: fewer switches.

20 cl, 4 dwg

FIELD: physics.

SUBSTANCE: circuit (1) with light-emitting diodes is provided with first subcircuits, having first light-emitting diodes (11) and second subcircuits having second light-emitting diodes (13) and switches (14), in conducting states, for switching on the second light-emitting diodes (13) and switching off the first light-emitting diodes (11), and, in non-conducting states, for switching off the second light-emitting diodes (13) and switching on the first light-emitting diodes (11). Also, the first and second subcircuits have different signal characteristics, such as different minimum threshold voltage values, so as to be realised by different types of light-emitting diodes (11, 13) or using a different total number of serial light-emitting diodes (11, 13) or by adding elements with threshold voltage to the first subcircuits. The light-emitting diodes (11, 13) have different colours and can be used backlight.

EFFECT: simplification.

16 cl, 4 dwg

FIELD: physics.

SUBSTANCE: illumination device (1) comprises, for example, diodes LED (L1, L2, L3, L4) with separate emission spectra. Detectors D1, D2, D3, D4) can generate a vector of measurement signals (S1, S2, S3, S4) which represent light output of one active light emitter. Further, based on a linear relationship obtained during the calibration procedure, the characteristic value of the light output of that light emitter (L1, L2, L3, L4) is calculated using the measurement vector, wherein said characteristic value is based on the decomposition coefficient of an individual emission spectrum on basic functions.

EFFECT: improved method.

25 cl, 6 dwg

FIELD: physics.

SUBSTANCE: illumination system (100) comprises: a set (14) of lamps; a controller (115); a user input device (19); memory (120) which determines discrete colour points containing an ID table (121) of hue, an ID tale (122) of saturation, an ID table (123) of brightness and boundary memory (124) which determines the boundary of the colour space. Based on data (x1, x2, x3) received from the user input device and information in the memory, the controller generates colour control signals (ξ1, ξ2, ξ3) for the set of lamps. The controller compares user input data with information in the boundary memory. If the controller detects that the said point lies beyond the boundaries of the colour space, the controller calculates the replacement point on the boundary of the colour space which was determined in the boundary memory (124), and generates is control signals based on the replacement point.

EFFECT: reduced volume of memory space required.

3 cl, 3 dwg

FIELD: physics.

SUBSTANCE: switched array of light elements has first, second and third light-emitting elements and first and second switches. The first light-emitting element has first and second leads, and the second light-emitting element has a first lead and a second lead connected to the second lead of the first light-emitting element. The third light-emitting element has a first lead connected to the first lead of the first light-emitting element, and a second lead. The first switch has a first lead connected to the first leads of the first and third light-emitting elements, and a second lad connected to the first lead of the second light-emitting element. The second switch has a first lead connected to the second lead of the third light-emitting element, and a second lead connected to the second leads of the first and second light-emitting elements.

EFFECT: fewer circuit components.

13 cl, 8 dwg

FIELD: electricity.

SUBSTANCE: matrix of luminous elements (100) includes the first (LEE1), the second (LEE2) and the third (LEE3) light-emitting elements and the first (140) and the second (150) controlled current sources. The first light-emitting element differs with the first operating voltage VOpi at which or over which it can essentially emit the light. The second light-emitting element includes the first output (120a) and the second output (120b) connected to the second output of the first light-emitting element; at that, the second light-emitting element differs with the second operating voltage Vop2. The third light-emitting element includes the first output (130a) connected to the first output (110a) of the first light-emitting element and the second output (130b); at that, the third light-emitting element differs with the third operating voltage Vop3. The first controlled current source is connected between the first output of the first light-emitting element and the first output (120b) of the second light-emitting element, and the second controlled current source is connected between the second output (110b) of the first light-emitting element and the second output of the third light-emitting element.

EFFECT: reducing the number of circuit components.

15 cl, 5 dwg

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