Transmission and receipt of coded light

FIELD: electricity.

SUBSTANCE: invention relates to lighting engineering. The invention suggests coded light to ensure improved control over light sources and transmission of data using light sources. Assignment of identification frequency for light sources allows assignment of more unique frequencies, i.e. for unique identification of more light sources in the system. Accessible frequency band is divided into uneven frequency areas and frequency is selected from the set of evenly separated frequencies in uneven frequency areas. Operation of the receiver is based on successive principle and able to analyse higher harmonics of the received light signals. Light components are assessed by groups successively.

EFFECT: improving efficiency in appointment of light source identifiers in the lighting system.

15 cl, 8 dwg

 

The technical field to which the invention relates

The present invention relates to a system of coded light. In particular, it relates to methods and devices for assigning identifiers to light sources in the system of the coded light and the detection of identifiers.

Art

The light sources currently used in lighting systems, consisting of a large number of light sources. The emergence of solid state lighting devices gave the ability to change and adjust some of the parameters of light sources in the sources of light. Such parameters include light intensity, light color, color temperature of the light and even the direction of the light. Changing and adjusting these settings in different light sources, the lighting designer or the user of the system can create lighting scenes. This process is often called the stage, and he usually is a very complex process due to the large amount of light sources and the parameters that need to be adjusted. Usually for each light requires a single controller, or a control channel. It is difficult to manage a system consisting of more than ten light sources.

To provide a more intuitive and simplified controls lights and POPs�ing scenes previously it was suggested that the introduction of invisible identity in light output of lighting devices. It is the introduction of identifiers may be based on the unique modulation of the visible light (VL) of a lighting device or by means of additional infrared (IR) light source in the lighting device and a unique modulation of this IR light. Light with embedded identifiers will be called coded light (CL).

To transfer CL mainly uses light emitting diodes (LED), allowing for a sufficiently high frequency and wide-band modulation. This, in turn, can provide the fast response of the control system. However, the identifiers may also be embedded in the light of other light sources, e.g. incandescent, halogen, fluorescent (FL) lamps and discharge lamps high intensity discharge (HID).

These identifiers of the light sources, also referred to as codes allow you to identify and rate the intensity of the individual local components of the lighting. It can be used in applications for light control, for example, during commissioning, the choice of light sources and interactive stage sets. These applications are used, for example, in homes, offices, shops and hospitals. Thus, the identifiers of the light sources and provide a simple and�tuitive intuitive control of lighting system which otherwise can be very difficult.

Lighting systems based on LED usually consist of a large number, e.g., hundreds, spatially distributed LEDs. This is partly because traditional single LED, is not yet able to provide sufficient lighting, and the fact that LEDs are point sources. Because of a large number of LED and a wide range of illumination levels that can be supported by each LED, the complexity of the calibration and control of such lighting systems is very high. According to the state of the traditional technique, in the system of the encoded light is possible to identify only a limited number (e.g., 100) of light sources.

In US 2008/297070 A1 discloses a remote control and programmable lighting apparatus that includes a radio interface. The parameters of the programmable lighting units associated with the primary adjustment programmable lighting, or installing a programmable lighting, thus, can be regulated with a remote control. Thus, remote control of lighting apparatus using the remote control the remote control.

In WO 2006/134122 A1 disclosed a radio communication system that uses at least two lanes h�cies, containing a set of frequency subbands for transmission of signals from and/or to user terminals according to a similar method of transmission. Frequency sub-bands have different frequency width in at least two frequency bands.

In EP 1538802 A2 disclosed communication system OFDM with adaptive subcarrier assignment according to channel conditions. The OFDM communication system is described with respect to mobile communications. In particular, the matter of assigning subcarriers mobile station to the base station.

In US 6195341 B1 discloses a communication method for communication in a multi carrier using a combination of subcarriers. In particular, disclosed is the method of communication that apply, e.g., to the base station and the terminal device in a radio telephone system. The objective is to ensure satisfactory transmission of the access request to the base station, etc. during communication in a radio telephone system, etc. in an efficient system.

In WO 2007/095740 A1 discloses lighting systems and, in particular, identification of sources of light associated with lighting systems. The light source is arranged to send a beacon signal that represents a unique identifier. The beacon signal is integrated into the light emitted from the light source. Through the use of electronic data transmission from the remote unit R�institution to the controller, ensures efficient and accurate transmission of one or more unique identifiers to the controller.

According to WO 2008/080071 A1, is provided by the source of optical power, the source of optical light source and optical encoded data. The output signals of different sources are multiplexed, so that the optical power of the optical illumination and optical encoded data transmitted via a common optical waveguide.

Disclosure of the invention

The object of the present invention is a solution to this problem and providing methods, devices and system of principles that reduce the dependence on the number of light sources in the system of the coded light when assigning and identifying the identifiers of the light sources.

In General, the aforesaid problems are solved by methods and devices described in the independent claims.

According to the first aspect, the aforesaid problems are solved by the method of assigning identifiers to light sources in the coded system of illumination, the method contains the stages at which: divide the available bandwidth into N non-uniform frequency regions, and choose for each light a unique frequency from a set of uniformly spaced frequencies in one of the uneven �ostatnich areas moreover, a unique frequency is used to modulate light output from each light source, thus assigning an identifier to each light source. It provides an effective appointment process, which allows you to assign a large number of unique identifiers. Thus, in the lighting system, you can use a large number of light sources having unique identifiers. In General, the appointment process is carried out so that the detection of identifiers can be used multiple harmonics. This allows you to effectively evaluate assigned identifiers.

The interval between the equally spaced frequencies may be different for different frequency regions. This provides a flexible way of appointment.

The interval between the equally spaced frequencies may be greater for low frequencies than for high frequencies. Since a larger space allows for more accurate estimation, it can ensure the appointment process, which provides unequal fault tolerance. However, depending on the receiver, you can achieve equal oshibkiot4etnosti.

Frequency band between the normalized frequency values 0 and 1 can be divided into N frequency domains. For 1≤nN-1 the width of the frequency regionnto outsidealso normalized frequency 2/(( n+1)(n+2)). These widths correspond to the widths of the harmonics.

For 1≤nN-1 the lower bound frequency domainncan be specified normalized frequency value (n-1)/(n+1). As a result, each frequency region corresponds to an ordered harmonics.

The output light can be modulated by the method of pulse width modulation, and a fill factor of pulse width modulation may depend on at least one of a unique frequency and level of attenuation of the light source. This allows you to associate the identifiers with the method of modulation of light sources.

According to the second aspect, the aforesaid problems are solved by the method of estimating identifiers assigned to light sources in the coded system of lighting, but the IDs are assigned according to the method described above, wherein the method includes the steps in which: accept the light; determine a unique frequency selected from a set of uniformly spaced frequencies in one of N non-uniform frequency regions available bandwidth by estimating the unique frequency for the frequency domainn, 1≤nN-1, on the basis of harmonic (n+1) of light, and determine the identifiers of unique frequencies. It provides efficient and does not require a large amount �of icisleri method of evaluation of identifiers, assigned according to the method described above.

The method may further comprise estimating the amplitude of a received light from a received light. The method may further comprise estimating the phase of a received light from a received light. The amplitude and phase can be used to better define the identity of the unique frequencies.

The method may further comprise determining the individual components of lighting on the basis of the amplitude.

The method may further comprise subtracting a full evaluation of the signal assigned a frequency in the frequency domainnbefore estimating the unique frequency for the frequency domainn+1. This provides a consistent method of evaluation of identifiers. In General, harmonics frequency domainnwill be correlated with the harmonics of the frequency domainn+1. However, due to the subtraction of a full evaluation of the signal to the frequency domainnbefore grading a unique frequency to the frequency domainn+1, the influence of harmonics of the frequency domainnwhen assessing frequencyn+1 is minimized. Thus, the evaluation process, requiring moderate computational load and still provide accurate results.

According to a third aspect, the aforesaid problems are solved by�m devices control light for assigning identifiers to light sources in the coded system of lighting, comprising: a processing unit, used to assign the identifier to the light source, whereby each light source identifier identifies a unique frequency used to modulate the light output from each light source, through the implementation stages, in which: divide the available bandwidth into N non-uniform frequency regions, and choose a unique frequency from a set of uniformly spaced frequencies in one of the non-uniform frequency regions.

Device light control can effectively implement a method for assigning identifiers to light sources in the coded system of lighting.

According to the fourth aspect, the aforesaid problems are solved by means of the receiver for estimating identifiers assigned to light sources in the system of the coded light, comprising: svetopriemnik; a processing unit designed to carry out the phases in which: determine a unique frequency selected from a set of uniformly spaced frequencies in one of N non-uniform frequency regions available bandwidth by estimating the unique frequency for the frequency domainn, 1≤nN-1, on the basis of harmonic (n+1) of light that is received by a svetopriemnik, and determining unique identifiers of frequencies.

The receiver can effectively realized�VAT method of evaluation of identifiers, assigned to light sources in the coded system of lighting.

Note that the invention relates to all possible combinations of features specified in the claims. Similarly, the advantages of the first aspect apply to the second aspect, the third aspect and the fourth aspect, and Vice versa.

Brief description of the drawings

These and other aspects of the present invention is described in more detail below, with reference to the accompanying drawings, showing a variant(s) of invention.

Fig. 1 - lighting system according to the embodiment of the implementation.

Fig. 2(a) - light source according to the embodiment of the implementation.

Fig. 2(b) - light source according to the embodiment of the implementation.

Fig. 3 - receiver according to the embodiment of the implementation.

Fig. 4 is a logical block diagram according to the embodiment of the implementation;

Fig. 5 is a logical block diagram according to the embodiment of the implementation;

Fig. 6 - examples of signals of pulse width modulation.

Fig. 7 - frequency ranges for different harmonics.

Fig. 8 - the process of successive iteration.

The implementation of the invention

The following implementation options are presented by way of example, to ensure the perfection and completeness of this disclosure and full of conveying the scope of the invention to specialists in this field of technology. The drawings provided with the IC�oznoy used notation.

According To Fig. 1, the lighting system 100 comprises at least one light source, indicated at 102. The source light 102 may be part of the lighting control system, thus, the lighting system 100 can be conventionally called a coded system of lighting. Note that the term “light source” means a device which is used to provide light in the room, for the purpose of illuminating objects in the room. Examples of these devices provide light includes illumination devices and light fixtures. Under the premise in this context is generally understood to be a living room or study in the institution, the gym, the room is in a public place or part of open space, for example, part of the street. Each source light 102 is able to emit light that is schematically indicated by arrow 106.

Due to the large amount of source light 102 and a wide range of illumination levels that can be supported by each source light 102, the complexity of the calibration and operation of the system 100 lighting is extremely high. According to the state of the traditional technique, only a limited number (e.g., 100) of the source light 102 can be identified in the lighting system 100 on the basis of the coded lighting. This problem can be solved by methods, devices and systems�'s concepts described below, which weaken the dependence on the number of light sources in the lighting system 100 when assigning and identifying the identity of the source light 102.

The emitted modulated light contains a part that is associated with a coded light containing the ID of the light source. The way of assigning identifiers to light sources will be discussed below. The emitted light may also contain non-modulated part associated with a component of the lighting. Each source light 102 may be associated with a number of lighting settings, among other things, is related to a component of the illumination light source, for example, color, color temperature and intensity of the emitted light. In General, the component of the illumination light source can be defined as time-averaged output of the light emitted by the source 102 of the light.

The lighting system 100 further comprises a device 104, referred to as receiver for detecting and receiving light, for example, the coded light containing the ID of the source light emitted by the source 102 of the light and the light emitted by light sources outside the system 100 of illumination (not shown).

The lighting system 100 may further comprise a device 110, called device control light, to assign the ID of the source light 102. To give�tion of such appointment, schematically indicated by the arrow 112, the device 110 of the light control can have a number of functionalities. These functionalities will be described below with reference to the logical block diagram shown in Fig. 5. The device 110 to control the light can enter into the composition of the Central controller. It may contain a processing unit or to enter into its composition. For example, the functionality of the device 110 of the light control can be carried out in the manufacture of the source light 102.

According To Fig. 1, the user may, at its discretion, select the source light 102 in the lighting system 100 and to control it with the receiver 104. For this, the sources 102 emit light of a unique identifier through the visible light 106. The receiver 104 has a (directional optical) light sensor, which, when targeted, can distinguish between light components of different light sources and select the source light 102. This source light 102 can be controlled over a communication line, e.g., line 108 radio, for example, based on ZigBee.

The alternative, according to Fig. 1, the user may, at will, control the source light 102 in the system 100 lighting to create lighting in a certain place and/or with the desired intensity and/or color of light. For this, the sources 102 emit light Unika�iny ID using visible light 106. The receiver 104 has svetopriemnik and is able to distinguish and measure different components of the light source 102 of the light in this place. Then, the receiver 104 can estimate the necessary components identified sources of light and to transmit light settings source light 102 as indicated by arrow 108 in Fig. 1.

Fig. 2(a) and Fig. 2(b) shows a functional block diagram of the source 200a, 200b of the light, for example, the above light source 102 in Fig. 1. Source 200a, 200b of the light may, therefore, be made with the possibility to emit illumination light and coded light and the coded light contains the source identifier of the light source 200a, 200b of the light. Source 200a, 200b contains a light emitter 202 to emit the coded light. The emitter 202 may include one or more LED, but may also contain one or more springs FL or HID, etc. In the case of IR, usually IR LED will be located near the primary light source. The primary source of light connected with lighting function of the light source (i.e., serves to radiate light illumination) and can be any light source and secondary light source is associated with the identifier of the light source (i.e., serves to emit the coded light). Preferably, the secondary light source is a combintion of�th LED. Source 200a, 200b further comprises a light receiver 208 for receiving information, such as identifier, to assign the modified source identifier of the light source 200a, 200b of the light. The receiver 208 may be a receiver capable of receiving the encoded light. The receiver 208 may include an infrared interface for receiving infrared light. Alternatively, the receiver 208 may be a radio receiver for receiving information transmitted over the wireless channel. In order further alternative, the receiver 208 may include a connector for receiving the information transmitted by cable. Cable can serve as the power cable. Cable can serve as a computer cable.

Source 200a, 200b of the light may further contain other components, for example, block 204 processing, for example, a Central processing unit (CPU) and a memory 206. According To Fig. 2(b), the device 210 of the control light may enter into the composition unit 204 processing. The alternative, according to Fig. 2(a), the source of light 200a does not contain the light. The light may be part of the lighting system 100, as discussed above with reference to Fig. 1. In order further alternative, the source 200a, 200b of the light may be provided with identifiers in the manufacture of source 200a, 200b of the light. According To Fig. 2(b), the device 210 upravleniya can operatively connect to the receiver 208, the memory 206 and the emitter 202. The device 210 of the light control can accept from the receiver 208 information corresponding to the destination ID source 200 of the light. For example, using block 204, the processing device 210 of the control light can change the encoding of the encoded light to a coded light emitted by the emitter 202, contained the ID. For such purpose, the device 210 of the control light may have a number of functionalities. These functionalities will be described below with reference to the logical block diagram shown in Fig. 5. Information related to the identifiers, for example, the identifiers and the parameters of the code may be stored in memory 206. Thus, in the illustrative source of light 200A in Fig. 2(a), which contains the light source 200A of the light can assign new IDs to the source 200A of light on the basis of data received by the receiver 208 and associated identifiers and parameters code stored in the memory 206.

The lighting device (not shown) may contain at least one source 200a, 200b lights, with each light source can be assigned different identifiers of the light sources. Preferably, this light source is a light source based on LED.

Fig. 6 while�an illustrative excitation signal pulse-width modulation (PWM) for an illustrative light sources 1 and 2. PWM is an effective way of reducing the light output of the light source. According to the method of PWM, the light source is excited (i.e. light displays) on the rated current level for some period of time and is not excited (i.e., does not output light) during the remaining time. Consequently, the PWM signal consists of a repeating sequence of pulses. The ratio of on time to off time is often called the fill factorp. In the upper part of Fig. 6, the fill factor of the light source 1 (denoted byp1) equal to the fill factor of the light source 2 (denoted byp2). In particular,p1=p2=0,5. In the lower part of Fig. 2, the fill factor is equal top1=p2=0,25. When the fill factor is high, the light source is, on average, more current flows, and, thus, of the light source output light of higher intensity. The light output of the light source is well correlated with the signal current and behaves the same as the signal shown in the figure. Usually the frequency of the PWM signal exceeds a few hundred Hertz (Hz), whereby the human visual system does not perceive the switching on and off of light. For the light source 1 shown in Fig. 6, the frequency of the PWM signal denoted byf1. Analogic�, for the light source 2 shown in Fig. 6, the frequency of the PWM signal denoted byf2in this illustrative example,f1<f2.

Fig. 6 shows that the LED can be assigned a unique frequencyfithe PWM signal, which acts as a coded light ID light source. This unique frequency uniquely identify light emitted from the light source. This method of encoding the light is called the multiplexing frequency division (FDM). Since the light output depends on the fill factor, i.e. the frequency, the light source can be reduced by changing the fill factor.

Fig. 3 shows a functional block diagram of a receiver 300 according to the embodiment of the present invention. The receiver 300 includes a processing unit, schematically indicated at 302, designed to assess the identifier assigned to the source 102 of the light based on the light received by svetopriemnik 304 of the receiver 300. For the implementation of such identification, the processing unit 300 has a number of functionalities. These functionalities will be described below with reference to the logical block diagram shown in Fig. 7. The receiver 300 further comprises a memory 306, a transmitter 308. In the memory 306 can be stored in�trucchi, relating to functionality evaluation assigned identifier. The transmitter 308 can be used to transfer the updated IDs of the source light 102 in the lighting system 100.

The way of assigning identifiers to light sources in the coded system of lighting is described below with reference to the logical block diagram shown in Fig. 4. The open method is presented in the context of FDM.

Available frequency band is divided intoNuneven (non-overlapping) frequency domains, the stage 402. Thus, the available bandwidth can be set by the available bandwidth. Available bandwidth is set between the lower limit frequency and upper limit frequency. By dividing the bandwidth onN(non-overlapping) frequency domains, frequency range up to justN-th harmonic band can be used in the detection and estimation at the receiver 300. Lower limit frequency may include a zero frequency value. However, for coded light VL, usually lower frequency exceeds 100 Hz to avoid visibility. A higher frequency is limited by the bandwidth of the device 110, 210 control the light and properties of light sources and typically is on the order of 1-10 MHz. A practical lower limit values and upper limit frequencies of nizkochastotnoi region are 2 and 4 kHz, respectively. The light sources can also be divided intoN(non-overlapping) groups, respectively.

In General, the frequency width of each such non-uniform frequency region may differ from the frequency domain to the frequency domain. In other words, the frequency domain can be associated with a specific width. To simplify the notation and without loss of generality, in what follows we consider the normalized frequency values. In particular, we assume that the (normalized) value of the lower limit frequency is set to 0, and the (normalized) value of the upper limit frequency is set to 1.

In addition, the width of the non-uniform frequency regions can be greater for low frequencies than the width of the high frequencies. In other words, the frequency domain can be associated with specific order. Moreover, the width of the non-uniform frequency regions may be reduced with the increase of the frequency content in it. In other words, the frequency domain can be associated with specific width and order. In particular, the width of the frequency regionnwhere 1≤nN-1, can be specified normalized frequency value 2/((n+1)(n+2)). The width of the frequency regionNin this case, is given by the equation 2/(N+1). In particular, the lower boundary of the frequency domainnfor 1≤N-1 can be specified normalized frequency value (n-1)/(n+1). Since the width of the frequency regionNcan be given by the expression 2/(N+1) and width (normalized) of the entire available frequency band is equal to 1, the lower boundary of the frequency domainNcan be specified expression 1-2/(N+1).

Then a unique frequency for each light source is selected from a set of uniformly spaced frequencies in one of the non-uniform frequency regions, step 404. Thus, the frequencies in each frequency region are spaced evenly. However, the time interval between equally spaced frequencies may be different for different frequency regions. In particular, the gap between the uniformly spaced frequencies may be greater for low frequencies than for high frequencies.

In General, the number of frequency values in each uneven frequency domain may differ from the frequency domain to the frequency domain. In particular, we denoteLnthe number of uniformly spaced frequencies in regionn. The relationship betweenLnandLn+1can be specified as aLn/Ln+1=(2+n)/(1+n). Thus, knowing the number of uniformly spaced frequencies in regionnyou can find the number of uniformly spaced frequencies in regionn+1, or Vice versa. In �astnosti, specifying a value for the number of equally spaced frequency values ofL1in area 1, it is possible to find the number of evenly spaced frequency values for the remainingN-1 regions. Typically, each region can contain up to several hundred evenly spaced frequency values.

Then the unique frequency used to modulate the light output from each light source. Thus, each light source is assigned an ID, step 406. The light emitted from the light sources can be modulated by the method of pulse width modulation. The fill factor of pulse width modulation may depend on the unique frequency associated with the identifier assigned to each light source. Denote bypithe fill factor of the light sourceiin the frequency domainn, 1≤nN-1. You can require that sin(π(n+1)pi)≠0. For the groupNyou can require that sin(πNpi)≠0. One reason for imposing this restriction is that, it may be desirable to identify the IDs of the n-th group on the basis of (n+1)-th harmonic of the signal. However, sin(π(n+1)pi)=0 the contribution of the sourceiin (n+1)-th harmonic is equal to zero. Therefore, the identification will be impossible.For example, the fill factor of any light source� in group 1 must not be equal to 1/2, since this will result in a second harmonic whose amplitude is equal to zero. It is not possible to assess it.

However, if you want the fill factor of the light sourcepiwas set equal to the outstanding value, the duty cycle can be adjusted to a low settingδp.In this case, the fill factorpilight sourceiin the frequency domainn, 1≤nN-1, can be adjusted topi+δpso that |(sin(π(n+1)pi))/(π(n+1))|>δp. Similarly, for frequency band N the fill factorpilight sourceiin the bandNcan be adjusted topi+δpso that |(sin(πNpi))/(πN)|>δp. Typical valueδpisδp≈0,001.

The light emitted from the light sources can also be associated with the level of attenuation corresponding to the relative light intensity of the light source. The fill factor of pulse width modulation may depend on the level of attenuation of the light source.

Fig. 7 shows a frequency band different harmonics of light that is received by a receiver. You can see that the frequency ranges overlap. For example, the third harmonic range that overlapped with veterinarmedizin range. This overlap indicates that the signals from different light sources are correlated. Therefore, the unit of estimation of the identifiers of the light sources using these harmonics, may fail because of this correlation, which limits the possibilities of evaluation. In addition, the correlation between the signals of different light sources may depend on unknown parameters, e.g., phase and frequency.

Therefore, to create a well-functioning unit of assessment is not easy. Further, from Fig. 7 it follows that in the first half (approximately) of the second harmonic range does not exist frequency overlapping. That means no interference from other harmonics other light sources in the first half of the second harmonic range. In other words, in this frequency range the unit of estimation can be formed only on the basis of this harmonic, excluding the influence of other identifiers. We will call this individual the unit of estimation. In addition, provided that the frequency spacing between the second harmonics from different light sources is set equal to 2/TwhereT- the response time of the receiver, you can use an individual unit of assessment, for example, on the basis of the Bank of filters using triangular clipping function. Equivalently, the frequency spacing between the main frequencies� equal to 1/ T. Therefore, when using the second harmonic, the light sources are packaged in two times more compared with the system using the identification on the basis of the fundamental frequency. Additionally, if the signal of the fourth harmonic light sources in the first half of can be evaluated from the respective second harmonics of these signals, the fourth harmonic can be deducted from the total received light signal, and some part of the frequency range of the third harmonic would be released from frequency overlap.

It is possible to consider multiple harmonics as the frequency further spaced at harmonics of the fundamental frequency, which allows to distinguish and accurately estimate the parameters of the frequency identifiers. The evaluation process is based on the following General principles. The parameters of the light sources in the frequency range 1 can be evaluated using the second harmonic (as shown in the upper part of Fig. 7). Then received light signal, which includes all harmonics, can be deducted from the total received signal. After that, the evaluation process can proceed to the estimation of identifiers to light sources in the second group of light sources using third harmonics. Therefore, the width of the frequency range for the first group can be defined so that the overlap between t�etim and second harmonic bands can be resolved, that shows dark areas in Fig. 7. In the illustrative example of Fig. 7, the first frequency range is approximately the first third of the entire frequency band. Similarly, the frequency range from about one third to about half of the entire frequency band, i.e. about 1/6 of the entire spectrum allocated to the second group. The parameters of the source of light signals in the second group can be estimated on the basis of the third harmonic (as shown in the lower part of Fig. 7). Then the parameters of the signal following light sources can be estimated on the basis of at least the fourth harmonics. This procedure can be systematically extended to allNgroups.

Method of estimating identifiers assigned to light sources in the coded system of lighting will be written with reference to the logical block diagram shown in Fig. 5.

The light is received by the receiver 104, 300, step 501. Estimated unique frequency selected from a set of uniformly spaced frequencies in one of N non-uniform frequency regions available bandwidth, step 502. This phase has several sub-steps. For each frequency regionn, 1≤nN-1, a unique frequency is estimated on the basis of harmonic (n+1) of received light, stage 504. Estimation of the exact frequency may be required due to the frequency of departures occurring in the excitation light source 204. They �might be due, for example, the imperfection of the components of the exciter light source 204. In the General case, the evaluation of a received light signal or lighting component can be carried out consecutively. Sincen=1 andn=N-1, the number of parameters, such as frequency, amplitude and/or phase of each light source inncan be estimated on the basis of harmonic(n+1)a received light signal. Forn=Nthe parameters of each light source inNcan be estimated on the basis of harmonicN. The identifiers are defined by a unique frequency, step 506.

Full evaluation signal is assigned a frequency in the frequency domainnyou can deduct up to of estimating the unique frequency for the frequency domainn+1. This iterative process is shown in Fig. 8. In particular, each unique frequency in the frequency domainnit is possible to estimate, for each identifieriin the frequency domainnby subtracting the estimated harmonic (n+1) with neighboring frequencies.

Unique frequency can be re-assessed, setting the position of the peak frequency within a specified distance (n+1)fwherefthis is the previous estimate of a unique frequency, step 508.

As mentioned above, it is possible to use a consistent unit of assessment. At each stage of the unit of estimation, the parameters of the signal source�ikov light in nare evaluated at one of the harmonics, after which the signals of all harmonics of the light source is deducted from the full received signal. To perform this subtraction may require assessment of all parameters of the signal with high accuracy. In this section, we explain how each of the components of the unit of estimation of the parameters.

Consider the frequency regionn, 1≤nN-1. The signals from the previous groups from 1 ton-1 thus deducted. It is necessary to consider only the frequency spectrum, denoted byFn(f), (n+1)-th harmonics of the light sources innth group. You can apply filtering of the signal obtained after subtraction. At the initial stage of the evaluation frequency,f^, each light source is assumed to be an ideal frequencyfiwithout the frequency drift. Then the Fourier transform ofF( ) received signal, and is consideredF(f^i).

Additionally, it is possible to estimate the amplitude of a received light, stage 510. It is also possible to estimate the phase of a received light, stage 512. Estimated value amplit�dy is equal to a^i=|F(f^i)|/bi,n+1wherebi,nthis is the valuen-th harmonic, and phase (n+1) and the harmonics is equal toϕ^i, n+1=angle(F(f^i)). This unit of assessment is the individual unit of assessment, which implements the proposed receiver.

To improve the performance of the proposed estimation process, you can use the following approach. This approach involves the use of an iterative algorithm, where the next iteration can beNItime:

At each iteration can be carried out following the steps fromi=1 toLn. For eachith light source, the estimated signals (n+1)-th harmonic of light sources is subtracted from the neighboring light sources. In particular, forjwith |j-i|<Lneighborspectrum (n+1)-th harmonic,F^j(f),j-light sources can be reconstruire�TB on the basis of a^i,f^,_iandϕ^i, n+1. You can then get theF^i(f)=Fn(f)-ΣjF^j(f).

Is determined by the position of the peak |F^i(f)|, and update the corresponding frequencyf^i. You can then update thea^i=|F^i(f^i)|/bi,n+1andϕ^in+1=angle(F i(f^i)). If you use a fast Fourier transform (FFT), |F^i(f)| takes values only in discrete frequency bins. In this case, the location of the peak frequency can be determined by the following interpolation procedure.

Two frequency Binaf1andf2can be positioned so that |F^i(f1)| and |F^i(f2)| had a value closest to the value of, say, ε max|F^i(f)|, where max|F^i(f)| is estimated from all frequency bins, where 0<ε<0 is a constant. This can be used to detect edges. Typical value of ε is ε=0,8. Thenf^i =(f1+f2)/2.

Because the phase is measured at the higher harmonics, it may be an uncertainty for the respective phases of the lower harmonics and fundamental frequency. The phase uncertainty can be resolved as follows. When you access aϕ^i, n+1for eachiinnth groupϕ^ican still not be determined because there isn+1 possible phases of the candidates due to the uncertainty phase. Evaluation ofϕ^ican be used for reconstruction of other harmonic signals, in order to evaluate the parameter of the serial signal frequency domains. The phase uncertainty can be resolved usingN-th harmonic band of the n-th group. On the basis ofϕ^i, n+1,ϕ^i-1,n+1andϕ^i+1sub> n+1you can list all the combinations of the phases of the candidates forϕ^i, n,ϕ^i-1, nandϕ^i+1, n. Then, for each combination, when you access aa^i,a^i-1,a^i+1,f^i,f^i-1andf^i+1you can reconstruct the spectrum aroundnf^i. Range aroundnf^iyou can also obtain the subtraction spectrum�RA, due to previous groups in this frequency range. These two estimated spectrum can be compared. From the combination that gives the best match of the two spectra, the phase of the candidate in relation toith light source can be defined as updatedϕ^i.

The amplitude (evaluation)a^ican be used to determine the individual components of illumination light sources, step 514. From the phases of the harmonics (n+1) of each light source can be obtained (n+1) phases-candidates for the component of the fundamental frequency, and, thus, (n+1) phases-candidates for harmonicsn. Phase-candidate for each light source can be selected according to the criterion. The criterion may indicate that the reconstructed signal harmonicsnmust have best match with the received signal. The best match can be set according to the distance criterion.

Additionally, the above steps can be repeated iteratively with the first to the last light source in each frequency regionn(i.e., from a light source associated with the lowest frequency in the frequency domainnto the light source associated with the highest�th frequency in the frequency domain n). In addition, the iteration can be repeated several times to improve the estimation result. The number of ratings can be assigned a preset number, or the evaluation may continue until such time as the results of two consecutive iterations differ by less than a pre-specified threshold.

The person skilled in the art it is obvious that the present invention is in no way limited to the above-described preferred variants of implementation. On the contrary, in the scope of the following claims numerous possible modifications and variations.

1. The method of assigning identifiers to the sources (102, 200A, 200b) of light in the system (100) of the coded illumination, the method contains the stages at which
divide (402) available frequency band into N non-uniform frequency regions, and
choose (404) for each light a unique frequency from a set of uniformly spaced frequencies in a corresponding one of the non-uniform frequency regions,
use (406) unique frequency for modulation of the light output from each light source, thus assigning an identifier to each light source.

2. A method according to claim 1, wherein the interval between the equally spaced frequencies is different for different frequency regions.

3. A method according to claim 1, wherein the gap between �auromere spaced frequencies greater for low frequencies, than for high frequencies.

4. A method according to any one of claims. 1-3, in which the width of the uneven frequency domain is greater for low frequencies than for high frequencies.

5. A method according to any one of claims. 1-3, in which the frequency band between the normalized frequency values 0 and 1 is divided into N frequency domains, and for 1≤n≤N-1 the width of frequency region n is specified normalized frequency value 2/((n+1)(n+2)).

6. A method according to any one of claims. 1-3, in which the frequency band between the normalized frequency values 0 and 1 is divided into N frequency domains, and for 1≤n≤N-1 the lower boundary of the frequency domain for n is specified normalized frequency value (n-1)/(n+1).

7. A method according to any one of claims. 1-3, in which the ratio between L1uniformly spaced frequencies in region n and L2uniformly spaced frequencies in region n+1 is L1/L2=(2+n)/(1+n).

8. A method according to any one of claims. 1-3, in which the output light is modulated by the method of pulse width modulation, and a fill factor of pulse width modulation depends on at least one of a unique frequency and level of attenuation of the light source.

9. A method according to claim 8, in which the fill factor of pilight source i in frequency band n, 1≤n≤N-1, determined by the condition sin(π(n+1)pi)≠0.

10. Method of estimating identifiers assigned to the sources (102 200A, 200b) of light in the system (100) of the coded light and the identifiers are assigned according to the method according to any one of claims. 1-9, comprising stages on which:
take light (501),
determines (502) a unique frequency for each of the light sources, and a unique frequency selected from a set of uniformly spaced frequencies in one of N non-uniform frequency regions available frequency band, for frequency region n, 1≤n≤N-1, by:
assessment (504) unique frequency based on harmonic (n+1) of light, and
determining (506) the identifier for each of the light sources of a unique frequency.

11. A method according to claim 10, further containing a stage at which the received light evaluate (510, 512), at least one of the amplitude and phase of a received light.

12. A method according to claim 11, additionally containing a stage at which, on the basis of the amplitude is determined (514) of the individual components of the illumination light sources so that the reconstructed signal harmonics n best match with the received light.

13. A method according to any one of claims. 10-12, further comprising a stage on which to estimating the unique frequency for frequency region n+1 is subtracted from a received light signal to which a frequency in frequency region n.

14. The device (110, 210) light control for assigning identifiers to the sources (102,200 and, 200b) of light in the system (100) of the coded light, comprising:
processing unit is designed to assign the identifier to the light source, whereby each light source identifier identifies a unique frequency used to modulate the light output from each light source, through the implementation stages, which are:
divide the available bandwidth into N non-uniform frequency regions, and
choose a unique frequency from a set of uniformly spaced frequencies in one of the non-uniform frequency regions.

15. The receiver (104, 300) for estimating identifiers assigned to the sources (102, 200A, 200b) of light in the system (100) of the coded light, comprising:
svetopriemnik (304),
the unit (302) of the processing performed with the opportunity to carry out the stages at which:
define a unique frequency for each of the light sources, and a unique frequency selected from a set of uniformly spaced frequencies in one of N non-uniform frequency regions available frequency band, for frequency region n, 1≤n≤N-1, by:
of estimating the unique frequency based on harmonic (n+1) of light that is received by a svetopriemnik, and
determine the ID for each of the light sources of a unique frequency.



 

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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: electricity.

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EFFECT: simplified control of lighting infrastructure.

15 cl, 7 dwg

FIELD: electricity.

SUBSTANCE: invention is related to electric engineering and may be used in architectural lighting and illumination control circuits. In the method for control of light fluxes of LED luminaries in a building and structures illumination system, which consists in the provision of a required astronomical time for the commencement and completion of LED luminaries operation by the master controller through a process controller in compliance with preset charts, record and/or correction of operating scenarios is made from the control room through the master controller for m LED luminaries in n process controllers, at that m≥n, and the performance of the operating scenarios is controlled for each LED luminary, whereat in the operating scenario for each LED luminary discreteness for time-variable control and the light flux fraction is preset for each discretisation interval, at that the change in the light flux for each LED luminary is carried out due to the pulse-width modulation and stabilisation of the current consumed by the LED luminary and/or supply voltage of the LED luminary, and n process controllers are synchronised by means of the master controller by periodic or nonperiodic setting of the process controllers to the initial state.

EFFECT: expanded functionality at the simultaneous simplification of the method realisation and improved reliability of control for the light fluxes of LED luminaries.

1 dwg

FIELD: electricity.

SUBSTANCE: invention is related to lighthead (1) containing light source (20) and drive (40). Light source (20) is assembled so that it generates light beam (B) during usage with light intensity depending on power supply signal (I; V). Drive (40) is placed so that orients light beam (B) during usage so that it depends on power supply signal (I; V). Orientation of the light beam has preset relationship with its intensity. Besides the invention is related to lighting system (100) containing at least one lighthead, space (1000) with the above lighting system and usage of the above lighting system.

EFFECT: improved flexibility and simplified adjustment of lighting system.

10 cl, 14 dwg

FIELD: electricity.

SUBSTANCE: invention relates to lighting engineering. A light control method involves stages at which there chosen based on a pre-determined criterion is a certain group among a variety of light colour groups; besides, the above light colour is distributed as to groups in compliance with a predominant wave length, where each group of colours is arranged so that it can have an effect on a vertebrate temperature regulation; a control signal is generated to control the predominant length of the wave of light emitted at least by one light source in compliance with the chosen group of colours; the generated control signal is transmitted at least to one above said light source so that at least one above said light source can emit light of the chosen group of colours, thus acting on the temperature regulation of the vertebrate subject to action of light of the chosen group of colours, which is emitted with at least one above said light source on the basis of the above said pre-determined criterion; and the control signal is transmitted to a climate control device, which indicates whether it is necessary to decrease or increase an output temperature of the climate control system depending on the chosen group of colours.

EFFECT: reduction of electric power consumption with heating and air conditioning systems.

15 cl, 4 dwg

FIELD: electricity.

SUBSTANCE: invention relates to the electrical engineering. Systems include the processor which can be used being connected to the personal communication device, and a preferences database. The processor is used for identifier detection for a user, set of settings for at least one operated lighting network requested by a user, and a context corresponding to each set of settings. The processor has the associated local memory for storage of the set of settings, corresponding contexts and the identifier of the associated user and additionally is used for the analysis of the set of settings of lighting and the corresponding contexts. On the basis of the analysis the processor identifies a correlation between the set of settings and contexts, and creates at least one rule of personal preferences connected with a user ID on the basis of correlation. The preferences database in some similar systems is used for storage of rules and the set of settings.

EFFECT: development of systems and methods for obtaining and change of personal preferences connected with at least one operated lighting network.

23 cl, 8 dwg

FIELD: electricity.

SUBSTANCE: invention relates to lighting engineering. The lighting system (10) comprises the first database (12) with data on light sources (14) in the lighting system, the second database (16) with data on preliminary settings of light sources in the lighting system for the purpose of lighting pattern creation, and computational module (18) designed to calculate energy consumption of the lighting system on the basis of lighting pattern to be created depending on data extracted from the first and second databases.

EFFECT: reducing energy consumption.

13 cl, 2 dwg, 3 tbl

FIELD: physics, control.

SUBSTANCE: invention relates to environment programme control and specifically lighting, audio, video, odour scenes or any combination thereof via a user interface for easy selection of an environment programme. An environment programme control system (10) comprises a remotely accessed server (12) which stores an environment programme and a client controller (16) of an environment creation system for providing a user interface for selecting an environment programme. The environment programme control system comprises a remote control client (14) for providing a user interface for controlling the environment programmes stored by the server. The server (12) is configured to execute an environment control programme which is configured to remotely display on the remote control client available environment programmes stored by the server, and enable remote control of access to the available environment programmes for loading by client controllers of the environment creation system.

EFFECT: providing centralised environment programme control along with the capacity to interactively select an environment programme to be activated locally using an environment creation system.

11 cl, 3 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to electronic engineering. The electronic system comprises at least a basic component, a power supply and at least one electronic unit configured to be powered by the power supply. The basic component is provided with at least two parallel extended electroconductive guides. At least one parameter of the electronic unit can be varied by varying the distance from the electronic unit to a predetermined position on the guides.

EFFECT: easier control of a parameter of the electronic unit.

12 cl, 14 dwg

FIELD: electricity.

SUBSTANCE: invention relates to lighting engineering. Configuration of lighting for representation of the first object contains the directed lighting assembly and decorative lighting assembly. The directed lighting assembly is designed with a possibility to provide lighting of the first object, has at least one directed lighting characteristic and contains at least one directed lighting generation device. The decorative lighting assembly is designed with a possibility to provide background lighting of the first object, has at least one decorative lighting characteristic and contains at least one decorative lighting generation device. The configuration also contains at least one sensor designed with a possibility to detect a distance between the sensor and the second object and to generate the value of a distance signal, and the controller designed with a possibility to accept a signal value from at least one sensor and to match the directed lighting characteristic and the decorative lighting characteristic on the basis of the signal value.

EFFECT: increase of lighting dynamism.

15 cl, 14 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to communication engineering and can be used in wireless communication systems. A modulator and a modulation method for a communication device are disclosed. The modulator is configured to multiplex control symbols and data symbols for transmission in a signal based on information on the distance between positions of at least two control symbols in a representation of symbol positions in the signal.

EFFECT: high communication channel throughput.

25 cl, 7 dwg

FIELD: radio engineering, communication.

SUBSTANCE: each cell selects a mapping scheme from at least two mapping schemes to implement resource mapping, which effectively reduces interference imposed on reference signal symbols of users at the edge of a cell; vector switching is performed for an orthogonal matrix to obtain multiple different codeword sequences and implement codeword design.

EFFECT: problem that the output power of reference signal symbols is unbalanced can be effectively alleviated.

12 cl, 8 dwg, 6 tbl

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to communication engineering and may be used in mobile communication systems. The method includes the following steps: in a downlink signal direction, filtering downlink signals at a baseband side to remove high frequency sub-carrier components, and extracting signals from the filtered signals with an extracting frequency fsd, where fw≤fsd<(128/75)*fw, and fw is the frequency spectrum bandwidth of the LTE; in an uplink signal direction, first performing interpolation on uplink signals to increase the signal frequency, and then filtering the signals to add high frequency sub-carrier components. The device includes a downlink filter, an extractor, an interpolator, an uplink filter, a frequency domain inverse transformation module and a frequency domain transformation module.

EFFECT: increasing throughput of transmission channels by reducing data rate on the baseband interface and radio frequency.

10 cl, 5 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method includes steps of dividing, using a multi-frequency receiver, radio-frequency (RF) signals into frequency bands received from the antenna to obtain RF signals of different frequency bands; transmitting a first group of RF signals of a predetermined frequency band to an RF unit such that the RF unit converts the received first group of RF signals of the predetermined frequency band into first digital signals of the base frequency band and transmits the first digital signals of the base frequency band to a base frequency band processing unit; and converting a second group of RF signals of the predetermined frequency band into second digital signals of the base frequency band and transmitting the second digital signals of the base frequency band to the base frequency band processing unit using a base frequency band digital interface; or transmitting the second digital signals of the base frequency band to a first RF module using the base frequency band digital interface such that the first RF module transmits the second digital signals of the base frequency band to the base frequency band processing unit.

EFFECT: improved receiving performance of the network.

15 cl, 20 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to a mobile communication system, particularly to a coordinated beam-forming technique using antennae of primary stations from different cells, and enables to reduce the risk of conflict between reference symbols.

EFFECT: invention discloses a method and a device for operating a primary station for communication with a plurality of secondary stations, which transmits the first subset of reference symbols associated with a spatial channel, wherein the transmission characteristic of the subset of reference symbols depends on the spatial channel.

16 cl, 3 dwg

FIELD: radio engineering, communication.

SUBSTANCE: communication device comprises a phase vector assigning unit which assigns a first phase vector to a plurality of subcarriers relating to a preamble, and assigns a second phase vector to a plurality of subcarriers relating to a postamble, wherein the first phase vector differs from the second phase vector.

EFFECT: providing communication device which performs postamble which does not require any symbol synchronisation, providing a communication device which can reliably determine presence or absence of postamble if synchronisation is not achieved, and which enables to transmit a packet of required length to a network on which there are multiple terminals.

25 cl, 32 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to communication engineering and can be used in wireless communication systems. A synchronisation channel (SCH) transmission method includes steps of generating a primary SCH (P-SCH) sequence according to supplementary information, wherein supplementary information includes at least one of base station (BS) type information, fast Fourier transform (FFT) size information, bandwidth (BW) information, group information, sector information and carrier type information; modulating the P-SCH sequence; mapping the modulated P-SCH sequence to subcarriers within a predefined subcarrier set, wherein the subcarriers included in the subcarrier set are spaced apart by one subcarrier interval; generating a P-SCH symbol by orthogonal frequency division multiplexing (OFDM)-modulating the P-SCH sequence mapped to the subcarriers, and transmitting the P-SCH symbol.

EFFECT: high transmission channel throughput.

32 cl, 11 dwg, 8 tbl

FIELD: radio engineering, communication.

SUBSTANCE: wireless communication method includes the following steps: building a field of a signal with a very high capacity (VHT-SIG), scrambling one or more bits of the VHT-SIG field, transmission of the VHT-SIG field with one or multiple scrambled bits along a wireless channel.

EFFECT: provision of the necessary correlation between the peak and average power when transmitting the data sequence in the frame preamble.

46 cl, 37 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method of transmitting uplink control signals includes: Performing, for uplink control signals, channel coding, scrambling, modulation, time-domain spreading and precoding transform; or respectively performing, for the uplink control signals, channel coding, scrambling, modulation, precoding transform and time-domain spreading; and mapping the uplink control signals to an OFDM symbol used for bearing the uplink control signals; and transmitting the uplink control signals borne in the OFDM symbol. The disclosure also provides a method for bearing a demodulation reference signal during transmission of uplink control signals, which includes: bearing the uplink demodulation reference signal in k OFDM symbols in a sub-frame.

EFFECT: effectively solving the problem of transmitting uplink control signals using a discrete Fourier transform-spread-OFDM structure.

25 cl, 20 dwg, 8 tbl

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to communication engineering and can be used in a wireless communication system. The method according to one aspect includes a step where a base station transmits downlink data to a first terminal which supports a first system via a first region of a frame, and transmits downlink data to a second terminal which supports a second system via a second region which follows the first region with a frame offset on a time axis, wherein said frame offset is an offset between the start point of the frame for said first system and the start point of the frame for said second system, and said first region includes 9+6* orthogonal frequency-division multiplex symbols.

EFFECT: high transmission throughput.

6 cl, 8 dwg

FIELD: radio communications.

SUBSTANCE: in multi-frequency system base station, using a certain set of frequencies for communication and sending data in multiple frequency bands, includes first transfer subsystem for sending synchronization channel message on one bearing frequency from set of preferable frequencies, at least an additional transfer system for transferring remaining data components on other bearing frequency. Mobile station in multi-frequency communication system contains control processor, providing for functioning of subsystems of receiver in accordance to data, contained in message of synchronization channel.

EFFECT: higher efficiency.

6 cl, 8 dwg

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