JP2008235115A - Lighting control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting control system 11 capable of correctly receiving visible light communication data on a receiving side even in a place where receipts of the visible light communication data from a plurality of luminaires are overlapped with one another. <P>SOLUTION: This lighting control system comprises the luminaires 3 having functions of transmitting visible light communication data. The lighting control system also comprises a lighting main control panel 12 for allocating the luminaires 13 to some groups, and instructing the transmission of the visible light communication data from the luminaires 13 for each group. Transmission timings of the visible communication data transmitted from the luminaires 13 in the same group are differentiated from one another. Even if the receipts of the visible light communication data from the luminaires 13 are overlapped with one another, the receiving side can correctly receive the visible light communication data. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an illumination control system that transmits visible light communication data.

  Conventionally, for example, in a facility such as an office or a store, a plurality of lighting fixtures installed in the facility are assigned to a group for each floor or each store, and the lighting fixtures in each group are collectively controlled, monitored and managed. There is a lighting control system.

  Moreover, in such an illumination control system, a lighting apparatus having a function of transmitting visible light communication data superimposed on the illumination light, and a portable receiver for receiving visible light communication data transmitted from the lighting apparatus; There is also one that can give arbitrary information to the person carrying the receiver.

  However, when the same visible light communication data is sent from multiple lighting fixtures at the same timing, multiple visible lights are received at the receiver in a place where reception of visible light communication data from multiple adjacent lighting fixtures overlaps. Since optical communication data is received at the same time, visible light communication data may not be received correctly.

Therefore, by making the frequency components of visible light communication data to be sent out differently on the side of a plurality of adjacent lighting fixtures, and configuring the receiver side to receive visible light communication data of any one frequency component, Even in a place where reception of visible light communication data from a plurality of adjacent lighting fixtures overlaps, any one of visible light communication data can be correctly received (for example, see Patent Document 1).
Japanese Patent Laying-Open No. 2005-176258 (page 3-4, FIG. 17)

  As described above, visible light communication data may not be correctly received by a receiver in a place where reception of visible light communication data from a plurality of adjacent lighting fixtures overlaps.

  In addition, by changing the frequency components of the visible light communication data to be transmitted on the plurality of adjacent lighting fixtures, and receiving the visible light communication data of any one frequency component on the receiver side, Even in the place where reception of visible light communication data from other lighting fixtures overlaps, any one visible light communication data can be correctly received. The transmission and reception of optical communication data must be supported, and there is a problem that the configuration and control are complicated on the plurality of lighting fixtures and receivers.

  The present invention has been made in view of the above points, and without complicating the configuration and control, visible light is received on the receiving side even in a place where reception of visible light communication data from a plurality of lighting fixtures overlaps. An object of the present invention is to provide a lighting control system that can correctly receive communication data.

  The illumination control system according to claim 1 has an illumination main operation panel for instructing transmission of visible light communication data for each group; and a function for transmitting visible light communication data, and is assigned to each group by the illumination main operation panel. A plurality of luminaires that transmit visible light communication data so that the transmission timing of the visible light communication data differs within the same group in response to a transmission command of visible light communication data for each group from the main lighting operation panel. It is what you are doing.

  The lighting main operation panel and the plurality of lighting fixtures can communicate with each other by, for example, a signal transmission line, power line communication, or wireless communication.

  As the lighting fixture, for example, a light source for illumination such as a fluorescent lamp, an incandescent lamp, and a light emitting diode element is used. For the transmission of visible light communication data from the luminaire, the visible light communication data may be superimposed on the light emitted by these illumination light sources, or a light source dedicated to data transmission such as a light emitting diode element may be used.

  The transmission timing of visible light communication data from a plurality of lighting fixtures in the same group is determined according to the order set in advance in the group after receiving a transmission command of visible light communication data from the lighting main operation panel. Alternatively, it may be sent from the lighting fixtures, or it may be sent sequentially from each lighting fixture by sequentially instructing each lighting fixture in the group from the lighting main operation panel.

  Since the transmission timing of visible light communication data transmitted from a plurality of lighting devices in the same group is different, reception of visible light communication data from a plurality of lighting devices is duplicated without complicating the configuration and control. Even in such a place, it is possible to correctly receive visible light communication data on the receiving side.

  A lighting control system according to a second aspect is the lighting control system according to the first aspect, wherein the luminaires of different groups transmit the visible light communication data so that the transmission timings of the visible light communication data are different from each other.

  The transmission timing of visible light communication data in different groups of lighting fixtures is set in advance between different groups, for example, by shifting the timing of issuing a transmission command of visible light communication data from the main lighting control panel to each group. You may make it send out from each lighting fixture in order.

  Since the transmission timing of visible light communication data transmitted from different groups of lighting fixtures is different, visible light communication is performed on the receiving side even in places where reception of visible light communication data from different groups of lighting fixtures overlaps. Data can be received correctly.

  The illumination control system according to claim 3 is the illumination control system according to claim 1 or 2, wherein the light-emitting diode element that is turned on as a main light source transmits visible light communication data.

  Since light-emitting diode elements are solid-state light-emitting elements, visible light communication data can be easily transmitted compared to the case where visible light communication data is superimposed on illumination light generated by a discharge phenomenon, such as a fluorescent lamp. It becomes possible.

  According to the illumination control system of claim 1, since the transmission timings of the visible light communication data transmitted from the plurality of luminaires in the same group are made different, the plurality of luminaires can be obtained without complicating the configuration and control. The visible light communication data can be correctly received on the receiving side even in a place where the reception of the visible light communication data from each other overlaps.

  According to the lighting control system of the second aspect, in addition to the effect of the lighting control system of the first aspect, the transmission timings of visible light communication data transmitted from different groups of lighting fixtures are made different. Even in a place where reception of visible light communication data from the lighting apparatus overlaps, the visible light communication data can be correctly received on the receiving side.

  According to the illumination control system according to claim 3, in addition to the effect of the illumination control system according to claim 1 or 2, in the lighting fixture, the visible light communication data is transmitted using the light emitting diode element. Can be sent out easily.

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

  FIG. 1 is a configuration diagram of a lighting control system.

  The lighting control system 11, for example, controls lighting for each store of a facility containing a plurality of stores. The lighting main operation panel 12 installed in a management room of the facility and the plurality of lights installed in the facility The lighting main operation panel 12 and the plurality of lighting fixtures 13 can communicate with each other via a signal transmission line 14.

  The lighting main operation panel 12 controls, monitors and manages a plurality of lighting fixtures 13 in a lump, and can be monitored and operated from the outside via the general-purpose network 15. The lighting main operation panel 12 has a function of assigning and setting a plurality of lighting fixtures 13 for each group, for example, for each store or area of the facility, and enabling individual control for each group. Yes.

  Each lighting fixture 13 includes a fixture main body 16 and a light source 17 for illumination such as a fluorescent lamp, an incandescent lamp, and a light emitting diode element. Further, each lighting fixture 13 has a unique address, and using this address, a communication function for communicating with the lighting main operation panel 12 via the signal transmission line 14, a function for transmitting visible light communication data, and a light source 17 Control functions such as control of communication, control of communication, and control of transmission of visible light communication data. For the transmission of visible light communication data, the visible light communication data may be superimposed on the illumination light emitted from the illumination light source 17, or a light source dedicated to data transmission such as a light emitting diode element may be used separately. The plurality of lighting fixtures 13 are assigned and set for each group by the lighting main operation panel 12, for example, for each store or area of the facility.

  The illumination control system 11 also includes a receiver 18 that receives visible light communication data. The receiver 18 includes, for example, a dedicated mobile terminal, a mobile device such as a mobile phone, and the like, and can output the contents of the received visible light communication data with display and sound.

  Next, the operation of the illumination control system 11 will be described.

  The lighting main operation panel 12 transmits, through the signal transmission line 14, lighting control data for controlling the lighting fixture 13 together with a group number for identifying a group, for example, according to a preset time schedule.

  Each lighting fixture 13 assigned to the group number transmitted from the lighting main operation panel 12 through the signal transmission line 14 receives the lighting control data, and turns on / off or adjusts the light source 17 according to the received lighting control data. Controls lighting conditions such as lighting.

  Further, the lighting main operation panel 12 transmits, for example, visible light communication data including information on each store and product information through the signal transmission line 14 together with a group number for identifying the group.

  Each luminaire 13 assigned to the group number transmitted from the lighting main operation panel 12 through the signal transmission line 14 receives visible light communication data, and receives the received visible light communication data as a light source for illumination. It is superimposed on the illumination light emitted by 17 or transmitted or superimposed on the light emitted by a light source dedicated to data transmission such as a light emitting diode element.

  At this time, in a plurality of lighting fixtures 13 in the same group, the transmission timing of the visible light communication data from the lighting main operation panel 12 is received all at once, and then the transmission timing is overlapped in a preset order within the group. Visible light communication data is transmitted at intervals of transmission timing that are not performed. The order of the sending timing may be set, for example, in the order in which a plurality of lighting fixtures 13 are group-set on the illumination main operation panel 12, or may be arbitrarily set on the illumination main operation panel 12.

  As a result, when a receiver 18 is brought into a store where a plurality of lighting fixtures 13 assigned to the same group are installed next to each other, reception of visible light communication data from neighboring lighting fixtures 13 overlaps. Even in such a place, the receiver 18 can correctly receive the visible light communication data transmitted from the respective lighting fixtures 13 at different transmission timings. For example, in FIG. 1, when the receiver 18 is in a position where data can be received between two adjacent lighting fixtures 13, first, visible light communication data a is transmitted from one lighting fixture 13, and this visible light communication is performed. After the transmission of the data a is completed, the visible light communication data b is transmitted from the other luminaire 13, and reception of the visible light communication data a and b is avoided from being duplicated.

  Also, for example, when lighting fixtures 13 assigned to different groups are adjacent to each other, such as near the border of adjacent stores, visible light communication data may not be sent from the lighting fixtures 13 at the same sending timing. The reception of visible light communication data at the receiver 18 will be duplicated.

  Therefore, at least in different groups adjacent to each other, the transmission timing of the visible light communication data from the lighting fixtures 13 is different between the different groups, so that the receiver 18 sends out the lighting fixtures 13 at different transmission timings. Each visible light communication data can be received correctly. The transmission timing of visible light communication data in this different group of lighting fixtures 13 is set in advance, for example, by shifting the timing of issuing a transmission command of visible light communication data from the lighting main operation panel 12 to each group, or between different groups. You may make it send out from each lighting fixture 13 in the order currently performed. The visible light communication data transmitted between different groups may be different from each other, or the same visible light communication data may be transmitted.

  In addition, by using a light emitting diode element to transmit visible light communication data from the lighting fixture 13, it is easier to transmit visible light communication data than when, for example, visible light communication data is superimposed on illumination light of a fluorescent lamp. Can be realized.

  The transmission timing of visible light communication data from a plurality of lighting fixtures 13 in the same group is added together with the transmission interval when the visible light communication data is sent from the lighting main operation panel 12 to the lighting fixture 13. Alternatively, it is possible to sequentially send the visible light communication data to the respective lighting fixtures 13 so as to send them sequentially from the respective lighting fixtures 13.

  The communication between the lighting main operation panel 12 and the lighting fixture 13 may use power line communication using a power line to which the lighting main operating panel 12 and the lighting fixture 13 are connected, or may use wireless communication. Good.

It is a block diagram of the illumination control system which shows one embodiment of this invention.

Explanation of symbols

11 Lighting control system
12 Lighting main control panel
13 Lighting equipment

Claims (3)

A main lighting panel that commands transmission of visible light communication data for each group;
Each has a function of transmitting visible light communication data, and is assigned to each group by the lighting main operation panel, and the visible light communication data is transmitted within the same group by a visible light communication data transmission command for each group from the lighting main operation panel. A plurality of lighting fixtures for transmitting visible light communication data so that the transmission timings are different from each other;
A lighting control system comprising: The lighting control system according to claim 1, wherein the lighting devices of different groups transmit visible light communication data so that the transmission timing of the visible light communication data is different. The lighting control system according to claim 1 or 2, wherein the light-emitting diode element that is turned on as the main light source transmits visible light communication data.

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