The method of controlling electric power of a discharge lamp and a device for its implementation
(57) Abstract:The invention relates to electrical engineering and can be used to power a gas-discharge devices and, in particular, gas-discharge lamps. The technical result is the ability to regulate electric power gas-discharge lamps. The method of control is to regulate the durations of alternating open and closed state of the power managed key referred to the length of each of the conditions set by the integration time is the sum of three signals: the first signal from the sensor, the current value of the power key, the second signal from the sensor voltage power source and the third constant signal equal with opposite sign to the average over a switching period of the power key the value of the sum of the first and second signals coming from the signal source offset that specifies power consumption from the power source, and to all three signals can be added correction signals. The method can be carried out by a device containing the sensor current value of the power key, the sensor voltage power source, the signal source offset, driver, power driven wrench, to agree the resources and the integrating unit and the comparator with hysteresis switching, and to the inputs of the summing and integrating unit connected to the outputs of the sensor current value of the power key, the sensor voltage power source and an offset signal, and the output connected to the input of the comparator hysterisis switch, the output of which is connected to the input of the driver Manager power managed key. 2 C. p. F.-ly 3 Il. The invention relates to electrical engineering and can be used to power a gas-discharge devices and, in particular, gas-discharge lamps.A known method of regulating the power supply for discharge lamps and realizing it device [RF Patent N 2101886, IPC H 05 B 41/29, publ. in bull. N 1/98] , in which the control power key is depending on the amount of current supply voltage at the storage capacitor and managed key, and stabilizing power of a discharge lamp by changing the current of the current of the lamp due to the narrowing of the average (most effective) time zone within the period of the voltage variation.The disadvantage of this method is the requirement of a sufficiently strong voltage power source (for example, the rectified mains voltage high waist color noble> Closest to the invention to the technical nature and adopted for the prototype is a way to regulate the power supply for discharge lamps [U.S. Patent N 4230971, IPC H 05 B 41/39, publ. 28.10.80], which consists in the fact that when feeding a discharge lamp bipolar electric pulses, the duration of the open state of the power key is applied to the lamp voltage of one polarity is determined by the time the current in the power circuit a key element of a given magnitude and duration of the closed state of the power key is applied to the lamp current of the opposite polarity) is enforced.The disadvantage of the prototype is the dependence of the average electric power of the discharge lamp from a supply voltage and the resistance of the discharge lamp.The technical result of the invention is the regulation of the electric power of the discharge lamp.The technical result is achieved in that the control method, which consists in regulating the duration of the alternating open and closed States of the power managed key referred to the length of each of the conditions set by the integration time hundreds sensor voltage power source, and the third signal equal with opposite sign to the average for the period of the switching power managed key value of the sum of the first and second signals from the signal source offset and specifies the power consumed from the power source, and to all three signals can be added correction signals.This method can be implemented on the device containing the sensor current value of the power-managed key sensor voltage power source, the signal source offset, driver, power driven key, the matching element is connected in series with power controlled by the key, which is further provided with summarizing and integrating unit and the comparator with hysteresis switching, and to the inputs of summing and integrating unit connected to the outputs of the sensor current value of the power-managed key sensor voltage power source and an offset signal, and the output connected to the input of the comparator with switching hysteresis, the output of which is connected to the input of the driver, Manager power managed key.The invention consists in regulating the average electric power Gaza power driven key. For example, consider the case of linear dependence of the sensor signal values of the source voltage from the source voltage VFEand sensor signal residual current power managed key from the current IFEpower managed key. Let us denote: <I FE> is the average for the period current power managed key with equal accuracy to the average losses for the period current drawn from the power source. VCMsignal from the signal source offset that specifies the average electric powergas-discharge lamps, < VQ> is the average for the period is an additional correction signal. Then:
(k11+k12<I FE>)+(k21+k22VFE)=VCM+< VCOOR>
where (k11+k12<I FE>) is the signal from the sensor current value of the power-managed key (k21+k22VFE- the signal from the sensor voltage power source, k11, k12, k21, k22- constant coefficients.For simplicity of analysis, assume that the average for the period value of < VQ> is equal to zero. Given that accurate to power loss on the elements of the device= <I and = k22/k12get:
= VFE-V2ANDP< / BR>This shows that the average for the period of the pulse power is transmitted to the gas discharge lamp is not dependent on the electrical parameters of the latter.Let us denote: VFEMR.= /2 is the rated voltage of power source <P MAX> =2/4 - maximum (within a certain range of VFE) average power consumed by the discharge lamp, = (VFE- VFEMR.)/VFEMR.the relative deviation of the supply voltage from the nominal value. Then get:
/<P MAX> = (1-2)
In Fig. 1 illustrates the above dependence /<P MAX> VFE/VFEMR.where you can see that the average for the period of the pulse maximum power at rated voltage, weakly decreases when the deviation of VFEin any direction from the nominal value in a certain range of VFEand rather strongly decreases when the deviation of VFEin any direction outside of this range.In Fig. 2 presents experimental data on atosimoti(shaded circles) consumed by the device from the power source received on the device to realize the inventive method and performed accordingly fundamentally-structural diagram shown in Fig. 3. As a matching network was applied energy-accumulating transformer.A device that implements this method contains the sensor 1 current value of the power-managed key sensor 2 voltage power source 3 an offset signal, the driver 4, the power managed key 5, the matching element 6, is enabled by the input in series with the power managed key 5 and the output of the discharge lamp 9, summarizing and integrating unit 7 consisting, for example, of the transistor and the capacitor, a comparator with hysteresis switch 8, for example, a Schmitt trigger.The device operates as follows. Summarizing and integrating unit 7 generates an output signal proportional to the integral of the sum of the signals from the sensor 1 current value of the power-managed key from the sensor 2 voltage supply from source 3 signal offset. Each time after reaching the output signal from the summing and integrating unit 7 one evoprene state power managed key 5.By the beginning of the next period, the voltage at the output of summing and integrating unit 7 reaches one of the thresholds of the switching comparator 8 with hysteresis switch that switches power managed key 5 in the open state. When this occurs, a current power managed key 5, which leads to a change of sign of the direction of change in the voltage at the output of summing and integrating unit 7. This process takes place during the "active" part of T1period T until the time when the voltage at the output of summing and integrating unit 7 reaches the second switching threshold of the comparator 8 with the switching hysteresis. This leads to power off the managed key 5. Current power managed key stops, which leads to a change of sign of the change of the voltage at the output of summing and integrating unit 7. This process continues during the "passive" part of T2period T until the time when the voltage at the input summing and integrating unit 7 again reaches the first switching threshold of the comparator 8 with the switching hysteresis. The process is periodically repeated with period T = T1+T2. 1. The way UPRAVLENIE States power managed key characterized in that the said duration of each of the conditions set by the integration time is the sum of three signals: the first signal from the sensor current value of the power of the managed key of the second signal from the sensor voltage power source, and a third signal equal with opposite sign to the average for the period of the switching power managed key value of the sum of the first and second signals from the signal source offset and specifies the power consumed from the power source.2. A device for implementing the method according to p. 1 containing the sensor current value of the power-managed key sensor voltage power source, the signal source offset, driver, power driven key, the matching element is connected in series with the power driven wrench, characterized in that it further provided with summarizing and integrating unit and the comparator with hysteresis switching, and to the inputs of summing and integrating unit connected to the outputs of the sensor current value of the power key, the sensor voltage power source and an offset signal, and the output connected to the input of the comparator with hysteresis switching, you
SUBSTANCE: device has block for connection to AC current source, converter for forming a DC current source and light diode group, consisting of multiple light diodes. Light diode group is provided with block for prior telling of service duration, including counter for measuring power-on period on basis of frequency of AC current source, integration device for power feeding, which is measured by counter, and for recording integrated value in energy-independent memory device and device for controlling power feeding mode for controlling light level of diodes in different modes, including normal lighting modes. Prior messaging block is meant for integration of power-on period for output of forwarding message, indicating approach of service duration end.
EFFECT: broader functional capabilities.
10 cl, 2 dwg
FIELD: transport engineering; railway traffic control light signals.
SUBSTANCE: proposed controlled light-emitting diode light signal contains N transformers whose primary windings are connected in series aiding and connected to supply source through contact of signal relay and power electrodes of transistor, and each of N secondary windings of transformers is connected through protective diodes with corresponding group of light-emitting diodes consisting of K light-emitting diodes connected in series aiding. Each of K x N light-emitting diodes of groups is optically coupled with each of parallel connected K x N photoresistors. Light signal contains resistor and comparator circuit where first point of connection of parallel-connected photoresistors is connected to point of connection of contact of signal relay and transformer, and second point of connection of parallel-connected photoresistor is connected to first output of resistor and input of comparator circuit. Comparator circuit consists of differential amplifier whose first input is connected with common contact of voltage drop relay, its front and resting contacts are connected to first and second sources of reference voltage, respectively, second input of differential amplifier being input of comparator circuit whose output connected to control input of pulse generator being output of differential amplifier. Second output of resistor is connected with point of connection of one of power electrodes of transistor and supply source. Invention makes it possible to control brightness of light-emitting diodes and stabilize radiation, and it provides possibility of double reduction of voltage and blackout.
EFFECT: provision of reliable control of light signal.
FIELD: municipal equipment of residential houses and industrial buildings, namely automatic systems for controlling electric parameters, namely apparatuses for automatic control of different-designation illuminating devices.
SUBSTANCE: apparatus includes primary pulse-type photo-converter with built-in photo detector forming output pulse-width modulated information signal; secondary converter including micro-controller, shaping amplifier, switch, display module, power unit, inductor, unit for controlling illumination, switching controller of power supply of mains. Secondary converter includes in addition real-time clock and standby power source. Primary pulse-type photo-converter is connected with secondary converter by means of two-wire line that is connected with inlet of shaping amplifier and first terminal of inductor at one side and outlet of primary pulse type converter at other side. Outlet of shaping amplifier is connected with first inlet of micro-controller whose second inlet is connected with switch. Third inlet of micro-controller is connected with outlet of real-time clock. First outlet of micro-controller is connected with first inlet of power unit. Second outlet of micro-controller is connected with inlet of display module. Inlet of illumination control module is connected with third outlet of micro-controller. AC supply mains is connected with second inlet of power unit whose first outlet is connected with second terminal of inductor. Second outlet of power unit is connected with inlet of standby power source whose outlet is connected with respective inlet of real time clock. Outlet of illumination control unit is connected with connected in parallel first inlets of N switching controllers of power of mains. AC mains is connected with second (connected in parallel) inlets of N switching controllers of power of mains. Connected in parallel outlets of said switching controllers through load (illuminating lamps) are connected with zero wire of AC mains.
EFFECT: enhanced operational reliability and safety of apparatus.
7 cl, 1 dwg
FIELD: electrical engineering; starting and operating circuits for gas-discharge lamps.
SUBSTANCE: proposed device designed for use in gas-discharge lamps of high starting voltage amounting to about 4 kV, such as high-pressure sodium vapor lamps, xenon and metal halide lamps that enables starting two lamps at a time from ac 220 V supply mains has dc current supply whose output is connected through series-interconnected converter and rectifier to input of inverter whose common input is connected to common inputs of inverter and rectifier and output, to its inverting output through two series-connected lamps; novelty is introduction of two voltage sensors, current sensor, second inverter, voltage multiplier, switch, capacitor, two delay circuits, OR circuit and NAND circuit; common output of dc current supply is connected to common inputs of two voltage sensors, multiplier, and through current sensor, to common inputs of converter and switch; output of dc current supply is connected to input of second inverter whose output is connected through multiplier to midpoint of two lamps and to capacitor electrode, other electrode of capacitor being connected to input of inverter; output of first voltage sensor is connected to input of NAND circuit and to input of first delay circuit whose inverting output is connected to input of OR circuit whose other input is connected to output of second voltage sensor and output, to clear inputs of converter and inverter, to control input of switch, and to input of second delay circuit whose output is connected to other input of NAND circuit; output of the latter is connected to clear input of second inverter; switch input is connected to rectifier output and current sensor output is connected to control input of converter.
EFFECT: enhanced efficiency, service life, power factor, and light stability; reduced power requirement.
1 cl, 2 dwg
FIELD: lighting equipment.
SUBSTANCE: device with control device has emission source, diffuser, electric outputs. Emission source has at least two light diodes of different colors with given space distributions of emission and localized in space as at least one group, board and control device, containing programmed channels for separate control over emission of light diodes of each color by feeding periodically repeating power pulses, lengths of which for light diodes of different color are independent from each other, while relations of lengths of period of power pulse, its increase front, decrease and pause are determined for light diodes of each color. Diffuser, inside which board with light diodes is positioned, is made at least partially enveloping the area of effect of emission of light diodes of emission source.
EFFECT: better aesthetic and emotional effect, close to optimal psycho-physiological effect of decorative multicolor lamp with vastly improved gamma of color effects, resulting in hypnotizing effect, increase of its attractiveness, efficiency, and broadening of its functional capabilities and addition of new consumer functions, lower costs and simplified usage.
20 cl, 15 dwg, 1 tbl
FIELD: mechanical engineering, in particular, equipment for forming emergency lighting in industrial quarters.
SUBSTANCE: device additionally has digital counters and comparators, included in each light source between power source and transformer control circuit.
EFFECT: higher energy efficiency.
2 cl, 3 dwg
FIELD: mechanical engineering, in particular, equipment for forming emergency lighting in industrial quarters.
SUBSTANCE: device additionally includes band filters, included in each light source between output of controlled modulator and transformer control circuit, and amplitude modulator, connected along control chain to adjustable generator and connected between power source and light source.
EFFECT: higher energy efficiency.
FIELD: mechanical engineering, in particular, emergency lighting equipment for industrial quarters.
SUBSTANCE: device additionally includes delay circuits and pulse generators, included in each light source between power source and transformer control circuit.
EFFECT: higher energy efficiency.
FIELD: engineering of devices for controlling electric light sources, in particular, lighting or illumination systems, which use light diodes in their construction.
SUBSTANCE: by means of personal computer, using specialized graphic software, a frame of required light diode illumination is formed. By means of color pattern, each imitator of light diode module is colored. After forming of one frame, other frames are formed, which require to be colored in similar way. Number of frames is determined by given model of illumination. As a result, animated cinematic is produced, which reflects appearance of illumination model. After that, programmed model is transferred to flash memory of controller through RS-485 interface port. Then, controller outputs aforementioned data into loop line with light diode modules.
EFFECT: using device for decorative or primary lighting of architectural objects makes possible fast generation of complicated and various models and types of illumination and backlight, with possible control over each module.
2 cl, 10 dwg
FIELD: technology for providing power to auxiliary devices of a light.
SUBSTANCE: power of one or several auxiliary devices 26 of light is extracted from lamp power impulse series, fed by phase light controller 28. Direct current power block 44 is connected to output 38,40 of light controller 28 to produce and store direct current energy for powering auxiliary devices. Controller 48 of lamp is connected to output 38,40 of light controller 28 to transfer power of power impulses to lamp 24. Lamp controller 48 has adjustable impulse transfer characteristic for powering the lamp not to interfere with its operation due to alterations to power consumed by auxiliary devices. Adjustable impulse transfer characteristic may be provided with switching device 76, which either interrupts or blocks selected parts of lamp power impulses. Adjustable impulse transfer characteristic maintains constant apparent brightness of lamp, independently on changes of power consumption by auxiliary devices. In disabled state or in preliminary heating mode transfer of power to lamp 24 is decreased to avoid emission of visible light. In full brightness mode lamp power impulses are practically left unchanged by lamp controller 48.
EFFECT: provision of power to auxiliary devices without using auxiliary force cables and without interfering with operation of light.
3 cl, 16 dwg