JP6245894B2 - Lighting control system - Google Patents

Description

  The present invention relates to a lighting control system for a railway vehicle.

  Conventional illumination control systems for railway vehicles lay control wires along with power supply wires to adjust the brightness of the interior lighting (dimming) and to adjust the lighting color (toning). In railway vehicles that use LED lighting as the main lighting instead of the fluorescent lamps that have been used in the past, the power supply that supplies power to the lamps of the LED lighting can be consolidated. The dimming control can be realized only by arranging a small number of dimming control wiring lines from the dimming control device to the power supply device. Furthermore, LEDs have a surface that is easy to introduce dimming control, such as high responsiveness (controllability) compared to fluorescent lamps (see Reference 1).

  However, in railway vehicles, a high-voltage circuit that mainly supplies power to the main motor, a low-voltage circuit that supplies power to service equipment such as air conditioners, a transmission circuit that transmits information to information terminals in the vehicle, Since various circuits such as signal circuits for security equipment are mounted, the circuit is easily affected by radiation noise generated from the various circuits described above. In addition, there is a problem that a new control line needs to be laid for controlling the newly installed LED, and it takes a lot of man-hours for installation, which hinders the introduction of new LED lighting to existing vehicles. Yes.

JP 2012-86813 A

  As described above, introducing LED lighting to a railway vehicle has many advantages, but it is necessary to examine the problem of laying control lines necessary for newly introducing LED lighting. Therefore, the inventors conducted research and development on the configuration of LED lighting control. As a result, the invention of a wireless LED lighting control system that can omit the laying of control lines has been completed.

  An object of the present invention is to provide a simple wireless illumination control system, illumination control apparatus, and illumination apparatus for a railway vehicle.

The invention described in claim 1 is an illumination control system provided in a train, and includes at least one illumination control device including an identification code storage unit in which an identification code for determining train formation is stored and a wireless communication unit. And a plurality of lighting devices controlled by the lighting control device,
An illumination control system, wherein the illumination control device and the plurality of illumination devices perform the following operations after the operation starts.
A) An identification code is read from the identification code storage unit in the lighting control device and the plurality of lighting devices, and command information is set to a predetermined initial state in the lighting control device, and the lighting devices are turned on. The state is set to a predetermined initial state.
B) The lighting control device sends a command for transmitting a lighting command signal with an identification code added to the lighting command information for instructing the lighting state of the lighting device every predetermined time.
C) Each of the lighting devices that has received the illumination command signal discriminates between the identification code and an identification code given to the illumination device in advance, and when the respective codes match, based on the content of the illumination command information The lighting state is set, and the received illumination command signal is relayed and transmitted.

  In the illumination control system of the present invention, since the same identification code previously given to the illumination control device and the plurality of illumination devices is read after the start of power supply, the illumination control device and the plurality of illumination devices share the identification code. The illumination control device wirelessly transmits an illumination command signal in which an identification code is added to illumination command information that indicates the lighting state of the illumination device, and each of the illumination devices that has received the illumination command signal receives the identification code. Is discriminated from the identification code given to itself in advance, so that malfunction is prevented. And when each code | symbol corresponds, the lighting state of an own is set based on the content of the said illumination command information, and the said illumination command signal is relay-transmitted by radio | wireless.

  According to a second aspect of the present invention, in the lighting control system according to the first aspect, the command transmission of the lighting command signal by the lighting control device is repeated after a random time delay every predetermined time. Is accompanied by a randomly generated transmission ID.

  The illumination command signal is transmitted by the illumination control device every predetermined time. Since the transmission is performed every predetermined time, the lighting device knows that the lighting control device is operating normally. In addition, since the transmission of the illumination command signal is accompanied by a randomly generated transmission ID, the lighting device can avoid duplication of relay transmission.

The invention described in claim 3 is the lighting device according to claim 2, wherein the relay transmission is performed when the transmission IDs are different .

Since relay transmission in the lighting device is performed in each lighting device, do not cause a relay loop
, Relay operation is controlled by relay transmission for non-transmission IDs received in the past
Do.

The invention described in claim 4 is the illumination control system according to any one of claims 1 to 3, wherein the relay transmission is performed after waiting for a random time delay .

Since multiple lighting devices perform relay transmission after a lapse of a random time, the transmission of signals from each other is different.
It will be done at the time.

According to a fifth aspect of the present invention, in the illumination control system according to any one of the first to fourth aspects, the transmission of the illumination command signal from the illumination control device is not repeatedly performed every predetermined time. Further, the lighting state is set to the initial state .

During normal operation, the command signal is repeatedly transmitted from the lighting control device to the lighting device every predetermined time.
Done. When this repeatability is lost, it is determined that the lighting control system has failed.
Each lighting device shifts to an initial state by default. You can get the necessary illuminance in the initial state
Therefore, safety in the train is maintained.

  The invention described in claim 6 is characterized in that in the illumination control system according to any one of claims 1 to 5, encryption is performed based on the identification code.

  Since the identification code is uniquely determined by the train organization, it can be clearly distinguished from other train signals.

  The invention described in claim 7 is provided with an identification code storage unit in which an identification code for discriminating train formation is stored and a wireless communication means. After power is supplied, an identification code is received from the identification code storage unit. At the time when a random time delay is added to a predetermined time interval, the illumination command information instructing the lighting state of the lighting device added with the identification code is encrypted with the identification code and transmitted as an illumination command signal It is the lighting control device characterized by doing.

  After the power is turned on, an identification code for discriminating the train formation is read, and the illumination command information instructing the lighting state of the lighting device added with the identification code is encrypted with the identification code and transmitted as an illumination command signal. This transmission is performed when a random time delay is added to a predetermined time interval.

  The invention described in claim 8 is provided with an identification code storage unit in which an identification code for discriminating train formation is stored and a wireless communication means, and after power is supplied, sets the lighting state to the initial state, The encrypted information including the received illumination command information is decrypted with the identification code, the identification code is discriminated from the identification code given in advance, and if the respective codes match, the illumination command information The lighting device is characterized in that its lighting state is set based on an instruction, and the received lighting command signal is relay-transmitted after a random time delay.

  The lighting device reads an identification code necessary for decryption after power-on. If the signal is received and the identification codes match, the lighting state is set based on the illumination command included in the signal, and the received illumination command signal is relayed and transmitted after a random time delay.

  According to the first aspect of the present invention, the same identification code given in advance to the illumination control device and the plurality of illumination devices is read after the start of power supply, and the illumination control device and the plurality of illumination devices share the identification code. Each lighting device discriminates between the received identification code and the identification code given to the lighting device in advance, so that malfunction is prevented. And when each code | cord | chords match, since the lighting command signal is set and relayed by radio | wireless transmission based on the content of the said illumination command information, the place where the radio from a lighting control apparatus does not reach Information is also transmitted to the lighting device placed in the. With the above configuration, the LED illumination can be stably controlled wirelessly, and the illumination can be easily converted into an LED.

  According to the second aspect of the present invention, command transmission of the illumination command signal by the illumination control device is performed every predetermined time. By repeating the transmission every predetermined time, the lighting device knows that the lighting control device is operating normally. Moreover, since transmission is performed after a random delay time with a randomly generated transmission ID, loop relay between lighting devices can be prevented, and interference due to mutual relay transmission signals can be prevented.

According to the invention described in claim 3, the relay transmission is performed every time the transmission ID changes.
Therefore, the relay loop is prevented and the operation of the lighting control system is stabilized.

According to the invention described in claim 4, relay transmission is performed after a random time delay.
Interference due to each other's signals can be prevented.

According to the invention described in claim 5, the illumination command signal is transmitted from the illumination control device.
If the lighting is not performed every predetermined time, the lighting state is set to the initial state.
Sometimes illuminance is secured and passenger safety is ensured.

  According to the invention described in claim 6, since the command transmission and the relay transmission are performed by being encrypted with an identification code, the illumination command signal does not interfere even when other trains are lined up. The control system can operate stably. It can also prevent interference with intentional systems.

  According to the seventh aspect of the present invention, the illumination control device is set with the identification code, and the illumination command signal encrypted with the identification code is transmitted at a time interval within a predetermined time. Operation can be easily confirmed. In addition, since it is encrypted and transmitted at a time when a random delay is added, it is less likely to be disturbed by signals from other devices.

  According to the invention described in claim 8, the lighting device is set with the identification code, the received encrypted signal is decoded with the identification code, and the lighting state of the lighting device is determined based on the content indicated by the illumination command information. Therefore, the lighting state of the lighting device is reliably controlled. Also, since the received illumination command information is relayed and transmitted after a random time delay, it is difficult to cause interference with other lighting devices, and the information is also transmitted to the lighting devices located away from the lighting control device by relay operation. Is done.

It is explanatory drawing of the communication state by radio | wireless with a control apparatus and a room light (illuminating device). It is a block diagram of an illumination control apparatus. It is an example of the packet used for transmission between an illumination control apparatus and an illuminating device. It is a block diagram of an illuminating device, Comprising: (A) is a case of light control, (B) is a case of toning. It is a flowchart of the process in an illumination control apparatus. It is a flowchart of the process in an illuminating device.

  Hereinafter, the details of the invention will be described with reference to the drawings. This will be described with reference to FIGS. FIG. 1 is a configuration diagram of a lighting control system of the present invention. FIG. 2 is a configuration diagram of the illumination control device. FIG. 3 is an explanatory diagram of a transmission frame format used in the lighting control system shown in FIG. FIG. 4 is a block diagram of the lighting device shown in FIG. FIG. 5 is a flowchart showing the operation of the lighting control apparatus shown in FIG. FIG. 6 is a flowchart showing the operation of the illumination device shown in FIG.

  FIG. 1 shows a relationship between a wireless lighting control device 2 used in the lighting control system 1 of the present invention and an interior lamp 3 which is a lighting device. Normally, the lighting control device 2 is placed in the crew room at the end of the railway vehicle. The lighting device (room light) 3 is placed mainly in the passenger compartment of the vehicle. Trains are assigned a knitting code according to the operation plan, and the trains are identified by the knitting code. By determining the identification code based on the composition code, the identification code is uniquely determined. The illumination control device and the illumination device are given in advance an identification code uniquely determined for each vehicle formation by a switch or the like. This switch corresponds to an identification code storage unit. As shown in FIG. 1, in order to exchange information wirelessly between the illumination control device and the illumination device, wireless communication means are provided for each.

  FIG. 2 is a configuration diagram of the illumination control device. The vehicle information setting unit 29 performs input of illumination information data, display of the contents of illumination commands, and the like. The illumination command information sent to the illumination device is generated based on the illumination information data input by the dimming / toning control data generation unit at the bottom of FIG. Here, dimming means changing the illuminance of the environment by controlling the luminance of the illumination, and toning means changing the chromaticity by changing the ratio of the three primary colors. This is to provide a comfortable environment by adjusting the brightness and color in the vehicle according to the environment.

  In the identification ID / encrypted information setting unit 27 as the identification code setting unit, an identification ID is set as an identification code for determining train formation. As the identification ID, an ID uniquely determined for each train formation by a dip switch or the like based on the formation number or the like is given in advance. The identification ID / encryption information setting unit 27 is set with illumination command information related to light control / color control and information for encrypting a transmission ID described later.

  The light control / color control data generation unit 26 generates light control / color control data based on setting information from the outside. The generated dimming / toning control information is encrypted by the identification ID (identification code) encryption information setting unit 27, and further converted into a packet suitable for transmission by the multiplexing / packetizing circuit 25.

  The encrypted packet is sent to the memory circuit 24 and stored. A memory may be prepared separately, but a memory built in the CPU may be used. The packet stored in the memory is modulated by an appropriate carrier wave by the modulation circuit 23 and transmitted from the transmission circuit 22 to the outside via the antenna 21. The carrier wave may be radio waves or light. When the carrier wave is light, an optical system such as a lens becomes the antenna 21.

  The memory circuit 24 stores various transmission information generated by the multiplexing / packetizing unit 25. The modulation circuit 23 reads various transmission information stored in the memory circuit 24, outputs a signal obtained by modulating an appropriate carrier wave by the modulation circuit 23 to the antenna 21, and sends a command to the lighting device 3 as an illumination command signal.

  The timing generator 28 controls the read timing of the memory circuit 24, the modulation timing of the modulation circuit 25, and the like. These timings are performed at a predetermined constant cycle (a constant time interval) or a random cycle. The random period is a period based on a random value within a range in which an upper limit and a lower limit are set.

  The multiplexing / packetizing unit 25, the memory circuit 24, the modulation circuit 23, the antenna 21, and the timing generation unit 28 described above constitute a wireless communication unit of the control device.

  Various types of information transmitted from the lighting control device 1 are encrypted into packets having a format suitable for transmission. The encryption key is arbitrary, but by using a uniquely determined identification code as the encryption key, it is possible to save the trouble of sending the encryption key to the lighting device that performs decryption. Since the above processing is performed digitally, it is preferable to use a CPU or a dedicated processing LSI.

  FIG. 3 shows an example of a transmission frame format of a packet constituting dimming illumination command information and identification code setting information. The transmission frame format shown in FIG. 3 is arranged in the order of STX, Text, ETX, and SUM from the top. STX indicates the head of the frame, is composed of 8 bits, and can display the Text attribute. Text indicates transmission data and is composed of 128 bits. ETX indicates the end of Text and is composed of 8 bits. SUM indicates a checksum and is composed of 16 bits. Encrypted information is set in Text.

  After the power supply is started, the lighting control device 2 configured as described above performs encryption using the identification code set in the identification ID / encryption information setting unit 27, and multiplexes / packetizes the packet. 25 and stored in the memory circuit 24. Thereafter, the packet is read from the memory circuit 24 according to the timing generated by the timing generation unit 28, modulated by the modulation circuit 23, and transmitted.

  Next, the lighting device will be described with reference to the configuration diagram of FIG. (A) is the case of only the light control, and (B) is the case of the color control that adjusts the chromaticity by controlling the light emitting parts having different colors. The illumination device is always in a reception mode by the transmission / reception switching circuit 42 and is waiting for a signal from the outside. The received signal is converted into a digital signal by a demodulation circuit, and a key for decryption is obtained from the encryption information setting unit for demodulation. Packet data is played back. In (A), the brightness | luminance of LED of all the colors is controlled simultaneously in the state which hold | maintained chromaticity. In (B), the LEDs having different colors are controlled so as to achieve the target chromaticity.

  First, the structure of FIG. FIG. 4A shows a configuration of the lighting device 3 capable of only dimming. The illumination device 3 includes various information setting units 46, an antenna 41, a transmission / reception switching circuit 42, a demodulation circuit 43, a dimming circuit 44, a light emitting unit 45, a delay circuit 48, a modulation circuit 47, It has.

  The various information setting unit 46 as an identification code storage unit includes an identification code storage unit such as a memory in which an identification ID set from the illumination control device 2 is stored. The various information setting unit 46 is also set with an encryption key and the like in the same manner as the identification ID / encryption information setting unit 46.

  The transmission / reception switching circuit 42 switches transmission or reception from the antenna 41. In the case of transmission, the signal modulated by the modulation circuit 47 is output to the antenna 41 and transmitted to the illumination control device 2 or another illumination device 3. In the case of reception, the signal received by the antenna 41 is output to the demodulation circuit 43.

  The demodulation circuit 43 demodulates the signal received by the antenna 41 and decrypts the encryption if it has been encrypted. The light control circuit 44 performs light control based on the light control / color control data acquired from the illumination command information related to the light control demodulated by the demodulation circuit. The light emitting unit 45 is configured by an LED, for example, and the luminance is adjusted (dimmed) by the control of the dimming circuit 44.

  The delay circuit 48 delays the timing modulated by the delay circuit 48 in order to adjust the transmission timing for the illumination command information and the identification code relay transmission related to the modulated light demodulated and decoded by the demodulation circuit 43. That is, the delay circuit 48 controls the modulation timing of the modulation circuit 47, similarly to the timing generation unit 28. Similar to the timing generation unit 28, this timing is performed at a predetermined period (a constant time interval) or at a random period. The modulation circuit 47 encrypts and remodulates the information delayed by the delay circuit 48 and transmits it from the antenna 41.

  Next, the configuration of FIG. 4B will be described. FIG. 4B shows a configuration of the lighting device 3 that can perform light control and color control. FIG. 4A differs from FIG. 4A in that light control circuits (A) and (B) and light emitting portions (A) and (B) are provided.

  In the configuration shown in FIG. 4B, the toning, that is, the chromaticity can be changed. Therefore, the dimming circuits (A) and (B) corresponding to each of a plurality of colors (two colors in the figure) and the light emission Parts (A) and (B) are provided. Then, the chromaticity is changed based on the light control / color control data acquired from the light control illumination command information.

  As is clear from the above description, the antenna 41, the transmission / reception switching circuit 42, the demodulation circuit 43, the delay circuit 48, and the modulation circuit 47 constitute a wireless communication unit of the lighting device.

  The illuminating device 3 configured as described above demodulates the identification code setting information by the demodulation circuit from the signal received by the antenna 41 within a predetermined time after the power is supplied, and stores the identification ID in the various information setting unit 46 for setting. At the same time, the illumination command information is modulated again and transmitted from the antenna 41 (the illumination command information is relayed and transmitted). After the identification ID is set in the various information setting unit 46, the illumination command information related to dimming is demodulated from the signal received by the antenna 41, and the illumination command information related to dimming that matches the set identification ID is adjusted. Based on the light / color control data, the brightness and chromaticity of the light emitting unit are adjusted by the light control circuit 44 and the like to perform light control and color control, and the illumination command information related to the light control is modulated again from the antenna 41. Transmit (dimming lighting command information relayed).

(Operation flow of lighting control device)
FIG. 5 is a flowchart showing the operation of the illumination control device 2. SC10 to SC30 are initial settings. When the power is turned on, the transmission of lighting information is repeated after the initial setting. In the first step SC00, power is turned on. In the case of a railway vehicle, power supply to all vehicles is started simultaneously. When the power is turned on, the identification code (identification ID) is read from the identification code storage unit set in advance (SC10). The code storage unit may be a switch, but may be software information such as a ROM. In the case of software writing, it can be realized by designating the writing mode of the identification code and sending information by wire or wireless from the outside of the lighting control device. In this case, an identification ID setting packet is used. Next, a transmission ID for controlling the number of transmissions is initialized (SC20). Moreover, illumination command information is set to an initial state (SC30). In the initial state, for example, the lighting color is set to the bulb color, and the dimming rate is set to 100%. This is the default lighting state. This is the initial setting operation.

  Next, repeated transmission of lighting information will be described. When transmission is performed within a predetermined time, a transmission timer is set with an initial value (SC40). In the case of the count-up timer, a value obtained by subtracting the number of clocks until overflow occurs is set. When transmitting at random intervals, the value set in the count-up timer is changed randomly. After setting the count-up timer, it is determined whether or not the control device has been operated from the outside (SC50). If it is operated from the outside (Yes), the illumination command information is set to the content specified by the operation (SC60). If the control device is not operated, SC60 is skipped.

  Next, it is determined whether or not the transmission timer ts has overflowed (SC70). When the transmission timer overflows, preparation for transmission starts (Yes). When it does not overflow, it is not the time of transmission yet, so the input to the lighting control device is monitored (SCV50).

  When ready for transmission, a transmission ID is randomly generated. This transmission ID is used for controlling so that a plurality of transmission sources do not form a loop when the illumination command information is relay-transmitted by an illumination device to be described later.

  Next, the command information, the identification ID, and the transmission ID are encrypted based on the identification ID to generate encrypted information (SC90). The encryption key is selected so that it does not overlap with the lighting control system of other trains using the organization code as the identification code.

  In order to avoid a collision with another apparatus, the apparatus waits with a random waiting time (SC100). After a predetermined time elapses, packetized data is transmitted. For example, the packet format shown in FIG. 3 is used. Information of 128 bit bits is placed in the portion of Txt in FIG. The contents of the information are encrypted illumination command information, an identification code, and a transmission ID. After the transmission, the process returns to the transmission timer setting (SC40) and the transmission operation is repeated. By repeating the transmission timer ts by counting up from the initial value, a repetitive operation within a predetermined time is ensured.

(Operation flow of lighting device)
Details of the operation of the lighting apparatus will be described with reference to the flowchart shown in FIG. SR00 to SR50 are initial settings. The operation starts from power-on (SR00). In the case of a railway vehicle, since all vehicles are powered on at the same time, all lighting devices installed in the vehicle perform the initial setting operation simultaneously. When the power is turned on, a preset identification code (ID) is read (SR10), and the received ID is initialized (SR20). Further, the lighting state is set to the initial state (SR30). Until the illumination command information is received, the lighting device is lit in the initial state. Next, the command information reception flag is set to FALSE (SR40). Then, the reception timer t _R is set to an initial value and started (SR50).

  Next, it is determined whether or not encryption information is received (SR60). If the encrypted information is received, the encrypted information is combined, and the command information related to the illumination, the identification ID, and the transmission ID are extracted (SR70). If the encrypted information has not been received, the reception process of SR70 to SR110 is skipped and the process proceeds to SR120.

  It is determined whether or not the extracted identification ID is the same as the identification ID set in the own apparatus (SR80).

  Next, in order to avoid duplicate transmission, the transmission ID received this time is matched with the transmission IDs received in the past five times (SR90). This number of 5 times is selected so as to exceed the maximum time during which information of the same transmission ID is retained in all vehicles. If the transmission ID received this time does not match the transmission IDs received for the past five times, it is determined as new encryption information and the received ID is set as the transmission ID received this time (SR100). The old one is deleted and rewritten in the memory for five times.

  Since the reception process ends, the command information reception flag is set to TRUE (SR110).

  In SR60, SR80, and SR90, in the case of No, all transition to the transmission operation after SR120.

The reception timer is provided for confirming that the encrypted information is repeatedly transmitted within a predetermined time. It is determined whether or not the reception timer t _R started in the initial setting has overflowed (SR120). If it has overflowed, the process proceeds to transmission processing. If there is no overflow, the process returns to the reception process.

In order to repeat transmission, a reception timer t _R is started with an initial value. Next, the command information reception flag is checked, and if it is TRUE, it is determined that the reception process for normally receiving the illumination command information has been performed, and the lighting state is set in the command information (SR150). If it is not TRUE, it is determined that the reception process has not been performed, and the lighting state is set as initial information (SR190).

  Next, the received encrypted information is relayed. A random time delay is implemented in order to avoid simultaneous transmission of a plurality of lighting devices (SR160).

  The encrypted information is transmitted after the delay time has elapsed (SR170). This completes a series of operations for receiving encrypted information and relaying it, so the command information reception flag is set to FALSE (SR180). When all the above processes are completed, the process returns to SR60 waiting for signal reception.

  The embodiments of the present invention have been described above with reference to the drawings. However, the specific configuration is not limited to the embodiments, and modifications within the scope not departing from the gist of the present invention may be added. Included in the range.

DESCRIPTION OF SYMBOLS 1 Lighting control system 2 Lighting control apparatus 3 Room light (lighting device)
DESCRIPTION OF SYMBOLS 21 Antenna 22 Transmission circuit 23 Modulation circuit 24 Memory circuit 25 Multiplexing / packetization circuit 26 Light control / toning control data generation unit 27 Identification ID (identification code), encryption information setting unit 28 Random period or constant period timing generation unit 29 Vehicle information setting unit 41 Antenna 42 Transmission / reception switching circuit 43 Demodulation circuit 44 Dimming circuit 45 Light emitting unit 46 Identification ID / encrypted information setting unit 47 Modulating circuit 48 Delay circuit 49 Dimming circuit 50 Light emitting unit

Claims (8)

A lighting control system for a train,
It has at least one lighting control device and a plurality of lighting devices controlled by the lighting control device, having an identification code storage unit in which an identification code for discriminating train formation is stored and wireless communication means,
An illumination control system that performs the following operations after power is supplied to the illumination control device and the plurality of illumination devices.
A) An identification code is read from the identification code storage unit in the illumination control device and the plurality of illumination devices, and illumination command information is set to a predetermined initial state in the illumination control device, and the plurality of illumination devices The lighting state is set to a predetermined initial state.
A) The illumination control device repeatedly transmits an illumination command signal in which an identification code is added to illumination command information for instructing the lighting state of the illumination device every predetermined time.
C) Each of the lighting devices that has received the illumination command signal discriminates between the identification code and an identification code given to the illumination device in advance, and when the respective codes match, based on the content of the illumination command information The lighting state is set, and the received illumination command signal is relayed and transmitted.   2. The illumination according to claim 1, wherein transmission of the illumination command signal by the illumination control apparatus is repeated after a predetermined random time delay at every predetermined time, accompanied by a randomly generated transmission ID. Control system. The lighting control system according to claim 2, wherein the relay transmission is performed when the transmission IDs are different. The lighting control system according to claim 1, wherein the relay transmission is performed after waiting for a random time delay in the lighting device. 5. The lighting device according to claim 1, wherein the lighting state is set to the initial state when transmission of the lighting command signal from the lighting control device is not repeatedly performed every predetermined time. The lighting control system according to any one of the above.   6. The illumination control system according to claim 1, wherein the command transmission and the relay transmission are performed based on the identification code.   An identification code accumulating unit in which an identification code for discriminating train formation is accumulated and a wireless communication means are provided. After power feeding is performed, the identification code is read from the identification code accumulating unit, and random at predetermined time intervals. An illumination control device characterized in that an illumination command signal obtained by adding the identification code to the illumination command information for instructing the lighting state of the illumination device is encrypted with the identification code and transmitted at a time delay.   An identification code storage unit in which an identification code for determining train formation is stored and a wireless communication means are provided, and after power is supplied, the lighting state is set to the initial state, and the illumination command in the received illumination command signal Encrypted information including information is decrypted with the identification code, the identification code is discriminated from the identification code given in advance, and when the codes match, the contents indicated by the illumination command information The lighting device is characterized in that it sets its lighting state and relays the received lighting command signal after a random time delay.

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