JP2014093249A - Illumination control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an illumination control system which can update a control program for an illumination device in a simpler method.SOLUTION: An illumination control system 100 has an illumination device 10 and a light control device 1. The illumination device 10 has a recording section and a microcomputer 13. The recording section records a program used for controlling illumination. The microcomputer 13 controls the illumination state according to the program. The light control device 1 is connected to the illumination device 10 through a light control signal line, and transmits a light control signal according to the duty ratio of a PWM to the illumination device 10. When the illumination device 10 receives a start signal constituted with a predetermined pattern of the duty ratio of the PWM which is inputted to the illumination device 10 through the light control signal line, the microcomputer 13 records data included in the signal received after the start signal in the recording section so as to update the program as new program data.

Description

  The present invention relates to a lighting control system.

  Among lighting control systems that control a plurality of lighting fixtures installed in a commercial facility such as a building, a lighting control system described in Japanese Patent Laid-Open No. 2001-273980 (hereinafter referred to as Patent Document 1) has been conventionally known. Yes.

  A lighting control system described in Patent Literature 1 includes a communication network in which various data are transmitted, a single or a plurality of dimming terminals connected to the communication network, and a lighting fixture whose lighting output is controlled by the dimming terminals. And a control unit connected to the communication network and instructing the dimming terminal to perform various controls. In the illumination control system described in Patent Document 1, the control unit transmits various data to the dimming terminal via the communication network, and performs various controls of the dimming terminals.

  The lighting control system described in Patent Document 1 includes a programmer connected to a communication network. The programmer transmits an operation program rewrite command to the dimming terminal via the communication network. The dimming terminal that receives the rewrite command downloads the operation program from the programmer and rewrites the operation program.

JP 2001-273980 A

  As described above, when each dimming terminal is normally controlled by the control unit, various data are transmitted to each dimming terminal via the communication network. On the other hand, when the operation program is rewritten, a rewrite command for the operation program is transmitted as a special command different from the normal time from the programmer to each dimming terminal via the communication network. As described above, in the illumination control system described in Patent Document 1, the operation program is rewritten by a special command separately from various data used for control by each dimming terminal.

  On the other hand, unlike an illumination control system such as the illumination control system described in Patent Document 1, the dimming terminal has only a function of transmitting a dimming signal to the lighting device via dimming light without having a communication function. There is a lighting system in which an operation program is written in a control unit such as a microcomputer included in the lighting device.

  In such an illumination system, when the operation program of the illumination device is rewritten, it is necessary to take out the board on which the microcomputer is mounted for each illumination device and perform the rewrite operation with a program writer or the like. In particular, when such work is performed on a plurality of lighting devices, much labor is required.

  Accordingly, an object of the present invention is to provide an illumination control system capable of updating a control program for an illumination device by a simpler method.

  The lighting control system according to the present invention includes a lighting device and a light control device. The lighting device includes a recording unit and a microcomputer. The recording unit records a program used for lighting control. The microcomputer controls the lighting state according to the program. The light control device is connected to the lighting device via a light control signal line, and transmits a light control signal corresponding to the PWM duty ratio to the lighting device.

  When the lighting device receives a start signal composed of a predetermined PWM duty ratio pattern input to the lighting device through the dimming signal line, the microcomputer uses the data included in the received signal after the start signal. It records in a recording part so that a program may be updated as data of a new program.

  In the illumination control system according to the present invention, the program can be rewritten even when the illumination device remains installed on the ceiling by using the dimming signal line that connects the illumination device and the dimming device. Specifically, the illumination control system is configured to rewrite a program by performing simulated communication based on the PWM duty ratio as data. Thus, according to the present invention, even when a plurality of lighting devices are connected to the light control device via the light control signal line, the programs of the plurality of lighting devices can be rewritten at a time, Workability can be improved.

  Furthermore, since it is possible to update the program by performing simulated communication after considering the PWM duty ratio as data, the illumination control system according to the present invention has a special communication function. There is no need. In addition, since the duty ratio can be used instead of the special data used for updating the program, the process for reading the PWM input to the lighting apparatus can be used as it is as the process used for normal illumination control. it can. Therefore, additional processing can be greatly reduced.

  Thus, in the lighting control system according to the present invention, the PWM signal is sent to the lighting device when the lighting state of the lighting device is controlled as in normal times and when the program is updated. Is transmitted. That is, in the lighting control system according to the present invention, the program of the lighting device can be rewritten by the PWM signal via the dimming signal. Thus, in the illumination control system according to the present invention, the system can be configured more simply by using a simpler signal.

  By doing in this way, the illumination control system which can update the program for control of an illuminating device by a simpler method can be provided.

  In the lighting control system according to the invention, the signal received by the lighting device after the start signal preferably includes information on the version of the program. The microcomputer is preferably configured such that the version indicated by the program version information included in the signal received by the lighting device after the start signal is greater than the program version stored in the recording unit when the microcomputer receives the start signal. If it is determined to be new, the program data is updated.

  According to this configuration, the program can be rewritten only for the lighting device that needs to be updated. In addition, every time a start signal notifying the start of update of the same version of the program is input to the lighting device, a situation in which the lighting device rewrites the same program does not occur. Therefore, the program can be easily rewritten again only for the lighting device that needs to be rewritten.

  By the way, in the illumination control system described in Patent Document 1, an operation program is provided by a programmer only to a dimming terminal corresponding to an illumination fixture that requires updating of an operation program among the illumination fixtures installed in the illumination space. Rewriting is not considered. That is, when updating the version of the operation program for some of the plurality of lighting fixtures installed in the lighting space, when replacing only some of the plurality of lighting fixtures, or lighting fixtures in the lighting space It is considered that the operation program necessary only for the dimming terminal corresponding to the corresponding lighting fixture cannot be individually rewritten when adding a light source.

  Thus, in the illumination control system described in Patent Document 1, for example, every time a rewrite command of the same version of the operation program is transmitted to the dimming terminal, the dimming terminal stores the same operation program. A situation that rewrites occurs.

  On the other hand, according to the configuration of the illumination control system according to the present invention, the program can be easily rewritten only in the illumination device that needs to be updated.

  In the illumination control system according to the present invention, the microcomputer preferably determines reception of the start signal during a predetermined time after the power supply of the illumination device is input.

  According to this configuration, the microcomputer of the lighting device distinguishes between a normal signal and a start signal for informing the start of program update among the dimming signals corresponding to the PWM duty ratio during a predetermined time. Can do. As described above, the microcomputer can easily determine the normal signal and the start signal among the dimming signals corresponding to the PWM duty ratio with respect to the signal received by the lighting device over a predetermined time.

  In the lighting control system according to the present invention, the lighting device preferably lights up in a predetermined lighting state for notifying the reception of the start signal when the start signal is received.

  According to this configuration, the operator can determine whether or not the program has been successfully updated by, for example, lighting the lighting device that is actually rewriting the program being lit in a predetermined lighting state that is different from the lighting state during normal operation. It can be easily judged. Thus, according to this configuration, it is possible to improve the workability of program update.

  As described above, according to the present invention, it is possible to provide an illumination control system that can update the control program for the illumination device by a simpler method.

It is a block diagram of the illumination control system which concerns on this invention. It is a block diagram which shows the structure of especially the control apparatus of the illumination control system which concerns on this invention in detail. It is a block diagram of the microcomputer of the illuminating device in the illumination control system which concerns on this invention. It is a schematic diagram which shows an example of a structure of the data part of the signal used at the time of the program update in the illumination control system which concerns on this invention. It is a figure which shows an example of the numerical value of the version data contained in the signal used at the time of the update of a program in the illumination control system which concerns on this invention. It is a flowchart of the control which the illuminating device of the illumination control system which concerns on this invention performs. It is a flowchart of the control which the illuminating device of the illumination control system which concerns on this invention performs. It is a schematic diagram which shows an example of a structure of the recording part of the illuminating device in the illumination control system which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a lighting control system 100 that controls a plurality of lighting devices installed in a commercial facility such as a building. As illustrated in FIG. 1, the illumination control system 100 includes, as the plurality of illumination devices 10 installed in the illumination space, illumination devices 10a, 10b, 10c,..., 10x, the light control device 1, and the control device 20. And. The lighting devices 10a, 10b, 10c,..., 10x are connected to the dimming device 1 through dimming signal lines. The lighting devices 10a, 10b, 10c,..., 10x are connected to each other via a dimming signal line.

  In addition, since each structure of illuminating device 10a, 10b, 10c, ..., 10x is the same, below, the illumination which shows either of illuminating device 10a, 10b, 10c, ..., 10x The device is referred to as a lighting device 10. The number of lighting devices 10 installed in a predetermined lighting space in the lighting control system 100 is not limited.

  The light control device 1 is connected to the illumination device 10 through a light control signal line. When the lighting state of the lighting device 10 is controlled, the light control device 1 transmits a signal whose duty ratio of PWM (Pulse-width modulation) is represented by the first pattern to the lighting device 10. Note that the duty ratio represented by the first pattern is a duty ratio according to the dimming adjustment of the lighting device 10. When a constant dimming state, that is, an illumination state is maintained, the duty ratio represented by the first pattern is constant.

  The signal represented by the first pattern is a normal dimming signal, and does not change the duty ratio, but is a signal constituted by a PWM signal having a constant duty ratio. During normal use of the illuminating device 10, among the signals transmitted to the illuminating device 10, a signal with a changed duty is transmitted to the illuminating device 10 only during a period in which the light control amount changes.

  The lighting device 10 includes a dimming terminal block 11, an I / F (interface) circuit 12, a microcomputer 13, a power supply circuit unit 14, a power supply terminal block 15, and a light source unit unit 16. The dimming signal line is connected to the dimming terminal block 11 in the lighting device 10. The I / F circuit 12 is connected to the dimming terminal block 11 and the microcomputer 13, and various signals including data transmitted from the dimming device 1 or the control device 20 are sent to the microcomputer 13 via the I / F circuit 12. Entered. In the illumination device 10, a plurality of light emitting diodes (LEDs) are used as light sources.

  Although not shown, the lighting device 10 is connected to a commercial power source or the like as an external power source. In the illumination device 10, an AC (alternating current) line is connected to the power supply terminal block 15. Power is supplied to the power supply circuit unit 14 from an external power supply. The power supply circuit unit 14 drives the light source unit unit 16 by applying a predetermined voltage or current to the light source unit unit 16. In the light source unit 16, the luminous intensity of each LED changes according to the applied voltage or current. The illuminance and color tone of the lighting device 10 are adjusted according to the change in the luminous intensity of the LED. The dimming of the lighting device 10 is controlled by changing the supplied power according to the PWM ON / OFF duty ratio or D / A (digital-analog) output.

  Dimming of the illumination device 10 is controlled according to a predetermined program. The dimming of the illumination device 10 is controlled by the microcomputer 13 based on the input PWM signal so as to follow a program. Thus, the microcomputer 13 controls the illumination state of the illumination device 10 according to the program used for illumination control.

  FIG. 2 is a block diagram of the illumination control system 100, and is a diagram illustrating a control block related to the update of the program of the illumination device 10. Note that program updating (in other words, rewriting) occurs when a defect in the program itself is corrected, or when the specification of lighting control such as fade-in / fade-out is changed according to the user's intention.

  As shown in FIG. 2, the control device 20 is connected to a plurality of lighting devices 10 via a dimming signal line. The control device 20 is configured to be able to transmit a PWM signal to the plurality of lighting devices 10 via a dimming signal line. When starting update of the program, the control device 20 transmits a start signal whose duty ratio changes according to the second pattern to the lighting device 10 as described later.

  The control device 20 is a general-purpose personal computer or a dedicated device, and can be brought into an illumination space by an operator. The control device 20 includes a central processing unit (CPU) 21 as a central processing unit, a storage unit 22, a PWM output circuit 23, an I / F circuit 24 for dimming signals, a dimming terminal block 25, An operation unit 27 and a display unit 28 are provided. The control device 20 is connected to the lighting device 10 via a dimming signal line connected to the dimming terminal block 25.

  The operation unit 27 is operated to transmit a signal to the lighting apparatus 10 and includes a keyboard or a mouse. The display unit 28 displays information necessary for the control device 20 to control the lighting device 10. The operation unit 27 and the display unit 28 may be configured by a touch panel including a liquid crystal display (LCD).

  The storage unit 22 stores data related to a program for controlling dimming of the lighting device 10. The CPU 21 is connected to the storage unit 22, the display unit 28, and the PWM output circuit 23. The ON / OFF duty ratio of a predetermined current or voltage output from the PWM output circuit 23 to the lighting device 10 is adjusted by the operation of the CPU 21. The PWM output circuit 23 outputs PWM as a signal in accordance with an instruction from the CPU 21. A signal output from the PWM output circuit 23 is transmitted to the illumination device 10 via the I / F circuit 24 and the dimming signal line.

  FIG. 3 is a block diagram of the microcomputer 13. As shown in FIG. 3, the microcomputer 13 has a configuration including a reception unit 31, a determination unit 32, a recording unit 33, and a light control unit 34.

  The receiving unit 31 receives data transmitted through the I / F circuit 12. The determination part 32 determines a 1st pattern or a 2nd pattern about the signal showing a duty ratio as a signal which a receiving part receives. The recording unit 33 records program data. Note that the determination unit 32 also determines other determinations related to control necessary for dimming the lighting device 10.

  The light control unit 34 operates the power supply circuit unit 14 in accordance with a program stored in the recording unit 33. When the power supply circuit unit 14 operates according to the program, the ON / OFF duty ratio of the current at a predetermined power output from the power supply circuit unit 14 is adjusted. In the light source unit 16 (see FIG. 1), the luminous intensity of each LED changes based on the current value including the duty ratio. In this way, the microcomputer 13 controls the dimming of the illumination device 10 by PWM according to the program stored in the recording unit 33.

  In addition, the dimming unit 34 operates the power supply circuit unit 14 according to the dimming signal received by the receiving unit 31. The dimmer 34 causes the power supply circuit unit 14 to adjust the voltage value or current value output from the power supply circuit unit 14 in accordance with the signal received by the receiving unit 31. Thereby, the ON / OFF duty of the current at a predetermined power output from the power supply circuit unit 14 in accordance with a signal transmitted from the light control device 1 (see FIG. 1) to the microcomputer 13 via the I / F circuit 12 The ratio is adjusted.

  As will be described later, when the determination unit 32 determines that the duty ratio is the second pattern, data included in a signal transmitted after the data that changes according to the second pattern is received as program data. The recording unit 33 records the received program data as a program for subsequent execution.

  The signal including data that changes according to the second pattern is an example of the start signal. Specifically, the start signal is a signal obtained by changing the duty ratio of the PWM signal within a predetermined time range. That is, the start signal is a signal in which the duty ratio is changed so as to be distinguished from a signal with a constant duty ratio transmitted as a dimming signal during normal use.

FIG. 4 shows an example of the configuration of the data portion of the signal used when updating the program.
The program update signal transmitted from the control device 20 to the lighting device 10 (see FIG. 3 for both) has a write start pattern portion as a start signal as shown in FIG. The duty ratio in the write pattern portion shown in FIG. 4 is an example of the second pattern. The change in duty of 20% or less, 80% or less, 20% or less,. Repeated for more than a second. As will be described later, the lighting device 10 (see FIG. 3) updates the program such as version upgrade by detecting the duty ratio for 30 seconds as a predetermined time after the lighting device 10 is turned on. Wait for start.

  Note that the second pattern may be a change in the ON / OFF duty ratio configured by a combination of other ratios. On the other hand, as described above, the duty ratio as the first pattern is a duty ratio according to dimming adjustment of the lighting device 10 (see FIG. 1). When a constant dimming state is maintained, the duty ratio represented by the first pattern is constant.

  As shown in FIG. 4, the signal as the program update data includes a transition preparation period part, version data, and write data. The signal of the transition preparation period part is output following the signal of the write start pattern part. As a signal of the transition preparation period part, a signal with a duty of 0% is output only for 100 ms, for example.

  The version data and the write data are output following the signal of the transition preparation period part. The write data is data recorded in the recording unit 33 (see FIG. 3) of the microcomputer 13 as new program data. The version data as program version information is output immediately before the write data. The version data is composed of four patterns in which the duty of one cycle is 20% or less, 20 to 50%, 50 to 80%, or 80% or more. One byte of data is expressed by combining the duty ratios of these four patterns for four periods.

  FIG. 5 is a diagram illustrating an example of numerical values of version data. As shown in FIG. 5, a signal having a duty of 20% or less in one cycle corresponds to 00 bits. Similarly, in one cycle, a signal with a duty of 20 to 50% corresponds to 01 bit, a signal with a duty of 50 to 80% corresponds to 10 bits, and a signal with a duty of 80% or more corresponds to 11 bits. . That is, as shown in FIG. 4 and FIG. 5, VD (Version data) 1 = 01 bit, VD2 = 10 bit, VD3 = 00 bit, VD4 = 11 bit, and these VD1 to 4 are LSB (least significant bit: Least Significant Bit) ), VD1 to VD4 are expressed as “11000110b (0xC6)” in binary.

  Below, the control performed when updating the program of the illuminating device 10 is demonstrated using FIG. FIG. 6 is a flowchart of the control executed by the lighting device, in which the lighting device accepts the start of program update. On the other hand, FIG. 7 is a flowchart of the control executed by the lighting device, and is a flowchart at a stage where the lighting device updates the program.

  After the power supply (not shown) of the illumination device 10 (see FIG. 1) is turned on, an initialization process is executed in step S101 as shown in FIG. In step S102, the receiving unit 31 (see FIG. 3) executes processing for reading a signal. In step S103, it is determined whether or not the receiving unit 31 has received a signal in step S102. If it is determined that the receiving unit 31 has not received a signal, the process proceeds to step S104. If it is determined that the receiving unit 31 has received a signal, the process proceeds to step S106.

  If it is determined in step S104 that the predetermined time has not elapsed, the process returns to step S102. In steps S103 to S104, it is determined whether or not the light control device 1 (see FIG. 1) is connected. If the light control device 1 is not connected to the lighting device 10 (see FIG. 1), the process proceeds to step S105, and the lighting device 10 is turned on in a state of 100% light control.

  In step S106, the duty included in the signal received in step S102 is extracted. In step S107, it is determined whether 30 seconds have elapsed since the power was turned on. The presence / absence of a write start signal is detected for 30 seconds in step S107. When it determines with YES in step S107, it progresses to step S108, and when it determines with NO in step S107, it progresses to step S111.

  In step S108, since it is determined in step S107 that the program need not be updated, control in accordance with the normal lighting state is executed. In step S108, the average value of the duty ratio extracted in step S106 is calculated. In the microcomputer 13, for example, the receiving unit 31 (see FIG. 3 for both) has a calculation function. In step S109, it is determined whether or not the average value of the duty ratio has been determined. If it is determined that the average value of the duty ratio is not fixed, the process returns to step S102. If it is determined that the average value of the duty ratio is determined, the lighting device 10 is dimmed in step S110 according to the light intensity and the color tone according to the determined average value.

  In step S111, it is determined whether the program needs to be updated. In step S111, it is determined whether or not the duty extracted in step S106 is a duty due to a signal of the write start pattern portion, that is, whether or not the duty ratio extracted in step S106 is the second pattern. When it determines with YES in step S111, it progresses to step S112, and when it determines with NO in step S111, it returns to step S102.

  In step S112, it is determined whether or not the duty ratio as the second pattern continues for 5 seconds. When it determines with YES in step S112, it progresses to step S113, and when it determines with NO in step S112, it returns to step S102.

  According to the above steps S101 to S112, the duty ratio transmitted from the control device 20 (see FIG. 2) is the second during the predetermined time after the power supply of the lighting device 10 (see FIG. 2) is turned on. Whether it is a pattern or not is determined by the determination unit 32 (see FIG. 3).

  In step S113, control of the writing process shown in FIG. 7 is executed.

  After it is determined in steps S111 to S112 that the duty ratio of the second pattern is continued for 5 seconds, step S114 is executed as shown in FIG. In step S114, the signal following the write start pattern portion (see FIG. 4) is read. Subsequently, in step S115, it is determined whether or not the signal of the transition preparation period part (see FIG. 4) has ended. In step S115, when it determines with YES, it progresses to step S116, and when it determines with NO, it returns to step S114.

  In step S116, the signal following the transition preparation period part (see FIG. 4) is read. Subsequently, in step S117, the duty included in the signal received in step S116 is extracted. In step S118, it is determined whether or not the duty (see FIG. 4) for four cycles included in the signal received in step S116 has ended. In step S118, when it determines with YES, it progresses to step S119, and when it determines with NO, it returns to step S116.

  In step S119, conversion of byte data into version data is executed. Subsequently, in step S120, it is determined whether or not the reception confirmation of the version data has been completed. In step S120, when it determines with YES, it progresses to step S124, and when it determines with NO, it progresses to step S121.

  In step S121, the version of the program indicated by the received version data is compared with the version of the program currently stored in the recording unit 33 (see FIG. 3). If it is determined in step S121 that the received version data is different from the current version, the process proceeds to step S122. If it is determined in step S121 that the received version data is the same as the current version, the process exits the write process control routine. If the program data including the version data is not currently stored in the recording unit 33 (see FIG. 3), such as when the program is newly downloaded, YES is determined in step S121, and the process proceeds to step S122. move on.

  In step S122, the received version data is held. In step S123, the dimming state of the illumination device 10 (see FIG. 2) is switched so that the LED blinks.

  In step S124, it is determined whether the necessary number of data has been prepared. In step S124, when it determines with YES, it progresses to step S126, and when it determines with NO, it progresses to step S125. In step S125, the received data is sequentially recorded in the recording unit 33 (see FIG. 3).

  Here, the configuration of the recording unit 33 as a flash memory will be described with reference to FIG. As shown in FIG. 8, the recording unit 33 has a configuration including an initialization processing unit 331, a data reception processing unit 332, a first bank 333, and a second bank 334. The initialization processing unit 331 stores data necessary for initialization processing of the microcomputer 13 (see FIG. 3). The data reception processing unit 332 stores data necessary for updating the program. The data reception processing unit 332 stores communication processing for updating the program. The data reception processing unit 332 executes these communication processes.

  The update data is written only in the first bank 333 or the second bank 334. For example, the first bank 333 stores program data including version data. For example, data stored in the first bank 333 is used for normal dimming control before the program update is started. The second bank 334 is, for example, an empty bank before the program update is started. The data sequentially recorded in step S125 of FIG. 7 is temporarily stored in the second bank 334. As will be described later, when the update of the program is completed, that is, after all necessary data is transmitted from the control device 20, the normal dimming control is executed from the first bank 333 to the second bank 334, for example. It is transferred to.

  As shown in FIG. 7, if it is determined in step S124 that the necessary number of data has been prepared, the process proceeds to step S126. If it is determined in step S126 that CRC (Cyclic Redundancy Check) matches, the process proceeds to step S127. If it is determined in step S126 that the CRC does not match, the control exits from the writing process.

  In step S127, the LEDs of the illumination device 10 (see FIG. 2) whose program update has been completed are all lit for 10 seconds. An operator who operates the control device 20 (see FIG. 2) recognizes that the update of the program has failed in the lighting device 10 that is not fully lit (or these) by visually recognizing the lighting device 10 that is not fully lit. Judgment can be made.

  In step S128, as described above, the bank for executing the program is switched from the first bank 333 to the second bank 334 (both of which are shown in FIG. 8). Subsequently, in step S129, after the reset process is executed, the process exits the write process control routine.

  As described above, the illumination control system 100 includes the illumination device 10 and the light control device 1. The illumination device 10 includes a microcomputer 13 including a recording unit 33. The recording unit 33 records a program used for lighting control. The microcomputer 13 controls the illumination state according to the program. The light control device 1 is connected to the lighting device 10 via a light control signal line, and transmits a light control signal corresponding to the PWM duty ratio to the lighting device 10.

  When the lighting device 10 receives a start signal constituted by a predetermined PWM duty ratio pattern input to the lighting device 10 through the dimming signal line, the microcomputer 13 is included in the signal received after the start signal. The recorded data is recorded in the recording unit 33 so as to update the program as new program data.

  In the illumination control system 100, by using a dimming signal line that connects the illuminating device 10 and the dimming device 1, the program can be rewritten even when the illuminating device 10 remains installed on the ceiling. Specifically, the illumination control system 100 is configured to rewrite a program by performing simulated communication with the PWM duty ratio as data. Thus, according to the illumination control system 100, since the programs of the plurality of illumination devices 10 connected to the dimming device 1 via the dimming signal line can be rewritten at once, workability can be improved. is there.

  Furthermore, since it is possible to update the program by performing simulated communication after considering the PWM duty ratio as data, the illumination control system 100 does not need to have a special communication function. In addition, since the duty ratio can be used instead of the special data used for updating the program, the processing for reading the PWM input to the lighting device 10 can be used as it is as the processing used for normal lighting control. Can do. Therefore, additional processing can be greatly reduced.

  As described above, in the illumination control system 100, the PWM signal is transmitted to the illumination device 10 when the illumination state of the illumination device 10 is controlled as in normal times and when the program is updated. The That is, in the illumination control system 100, the program of the illumination device 10 can be rewritten by the PWM signal via the dimming signal. Thus, in the illumination control system 100, the system can be configured more easily by using a simpler signal.

  By doing in this way, the illumination control system 100 which can update the program for control of the illuminating device 10 by a simpler method can be provided.

  In the lighting control system 100, the signal received by the lighting device 10 after the start signal includes program version information. The microcomputer 13 indicates that the version indicated by the program version information included in the signal received by the lighting device 10 after the start signal is based on the version of the program stored in the recording unit 33 when the microcomputer 13 receives the start signal. If it is determined that the program is also new, the program data is updated.

  According to this configuration, the program can be rewritten only for the lighting device 10 that needs to be updated. Further, every time a start signal notifying the start of update of the same version of the program is input to the lighting device 10, a situation in which the lighting device 10 rewrites the same program does not occur. Therefore, the program can be easily rewritten again only for the lighting device 10 that needs to be rewritten, such as the lighting device 10 in which the rewriting of the program has failed.

  In the illumination control system 100, the microcomputer 13 determines reception of the start signal during a predetermined time after the power supply of the illumination device 10 is input.

  According to this configuration, the microcomputer 13 of the lighting apparatus 10 distinguishes between a normal signal and a start signal that notifies the start of program update among dimming signals corresponding to the PWM duty ratio during a predetermined time. can do. As described above, the microcomputer 13 can easily determine the normal signal and the start signal among the dimming signals corresponding to the duty ratio of the PWM with respect to the signal received by the lighting apparatus 10 by taking a predetermined time. it can. Further, by limiting the time for accepting the start signal as a signal for informing the start of the program update, a malfunction occurs in the lighting device 10 when a signal that substantially matches the start signal is transmitted at an unintended time. It can be prevented from occurring.

  In the lighting control system 100, when the lighting device 10 receives a start signal, the lighting device 10 lights up in a predetermined lighting state for notifying the reception of the start signal.

  According to this configuration, the lighting device 10 that is actually rewriting the program lights up in a predetermined lighting state different from the state in which it is normally turned on, for example, to determine whether the program has been successfully updated. Can be easily determined. Thus, according to this configuration, it is possible to improve the workability of program update.

  Note that the predetermined lighting state of the lighting device 10 that is dimmed while the recording unit 33 records the program data is not limited to blinking, but is in a lighting state different from the normal dimming state. What is necessary is just to change, and it may be the state of another light control which various color tone and luminous intensity were combined. The light source whose lighting state changes is not limited to the illumination light source normally used in the illumination device 10. The illuminating device 10 may include a dedicated light source, and the other light source may emit light as an indicator while the recording unit 33 records program data.

  The recording unit is not limited to the configuration in which the microcomputer 13 includes the recording unit 33. The illuminating device 10 may have a recording unit configured separately from the microcomputer 13. Further, the receiving unit is not limited to the configuration in which the microcomputer 13 includes the receiving unit 31. The lighting device 10 may have another receiving unit configured separately from the microcomputer 13.

  Note that the program to be updated is not limited to a program used for dimming control, and may be a program used for illumination control such as a program used for fade-in or fade-out control. Note that unlike the illumination control system 100, an inexpensive dimming device that performs dimming with a volume or the like cannot achieve fade-in or out while changing the signal transmitted from the dimming device, and is not special. Since a light control device is required, it is necessary to cope with the lighting device.

  When the program is updated, the light control device 1 and the control device 20 are not limited to being connected simultaneously as shown in FIG. 2, and only the control device 20 is connected independently to the light control device 1. May be.

  A terminal that transmits a signal for rewriting a program is not limited to a control device such as a PC. The signal for rewriting the program may be a signal transmitted by the light control device 1 when the light control device 1 connected to the lighting device 10 has a function of transmitting the light control signal.

  The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the scope of claims, and includes all modifications and variations within the meaning and scope equivalent to the scope of claims.

1: Light control device, 13: Microcomputer, 10 lighting device, 31: Reception unit, 32: Determination unit, 33: Recording unit, 100: Lighting control system

Claims (4)

An illuminating device having a recording unit for recording a program used for controlling the illumination, and a microcomputer for controlling an illumination state according to the program;
A dimming device connected to the lighting device via a dimming signal line and transmitting a dimming signal corresponding to a duty ratio of PWM to the lighting device;
When the lighting device receives a start signal configured by a predetermined PWM duty ratio pattern input to the lighting device through the dimming signal line, the microcomputer receives a signal received after the start signal. Is recorded in the recording unit so as to update the program as data of the new program. The signal received by the lighting device after the start signal includes information on the version of the program,
In the microcomputer, the version indicated by the version information of the program included in the signal received by the lighting device after the start signal is stored in the recording unit when the microcomputer receives the start signal. When it is determined that the program is newer than the version of the program, the data of the program is updated.
The lighting control system according to claim 1.   The lighting control system according to claim 1, wherein the microcomputer determines reception of the start signal during a predetermined time after the power supply of the lighting device is input. When the lighting device receives the start signal, the lighting device is turned on in a predetermined lighting state for notifying the reception of the start signal.
The lighting control system according to any one of claims 1 to 3.

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