JP2010073634A - Illumination system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination system capable of easily and semi-automatically imparting addresses of lighting fixtures. <P>SOLUTION: The illumination system is composed of a plurality of lighting fixtures 11a to 11i arranged in a lattice shape with an "n" number of rows and an "m" number of columns. Each lighting fixture superposes address setting information and data of a maximum number the "n" rows of the "n" number of rows and the "m" number of columns of the lighting fixtures with an illumination light to carry out visible light communication by a transmission means 12. When a self-address is not stored in a self-address memory 14, each lighting fixture receives the address setting information and data with the maximum number "n" rows which are sent from the plurality of lighting fixtures 11 other than itself, stores the received plurality of address setting information in order of row coordinates to store the maximum number "n" rows in a received data memory 17. A data processing means 15 decides that the address setting information of which the row coordinate among the plurality of address setting information stored in the received data memory part 17 is at the center is a self address to be stored in the self-address memory 14. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lighting system formed by arranging a plurality of lighting fixtures in a grid pattern.

  For example, in the interior lighting of a building, a plurality of lighting fixtures are arranged on the ceiling surface, and a dimming control signal is transmitted to the lighting fixtures via a transmission line so that the brightness of the lighting fixtures is controlled to be constant. . In such a lighting system, dimming control is performed by setting addresses in advance in each lighting fixture.

  In order to be able to perform dimming control of a plurality of grouped illumination loads almost simultaneously in units of groups, the dimming terminal unit has multiple self-address setting units that set their own unique addresses. Some include a virtual address storage memory that stores virtual addresses for performing dimming control of lighting loads in a lump (see, for example, Patent Document 1).

In such a lighting control system, when each lighting fixture and group are controlled by the dimming terminal, it is necessary to specify the lighting fixture to be controlled from the control unit, and for this purpose, an address is assigned to the lighting fixture. It is necessary to make it possible to identify the lighting fixture.
Japanese Patent Application Laid-Open No. 11-045783

  However, when setting the address for the lighting fixture in the lighting system, after installing the lighting fixture, manually turn on and off the lighting fixture and set the address while checking the position of the lighting fixture etc. As the number of lighting fixtures increases, address setting work becomes troublesome. In particular, address setting requires regularity in order of address size or order in accordance with the physical arrangement of a plurality of lighting fixtures. It becomes complicated.

  An object of the present invention is to provide a lighting system that can easily and semi-automatically assign the address of a lighting fixture.

  The lighting system according to the invention of claim 1 is composed of a plurality of lighting fixtures arranged in a grid of n rows and m columns, and each of the lighting fixtures includes a row coordinate and a column coordinate. Transmitting means for performing visible light communication by superimposing address setting information and data of the maximum number of rows n in the n rows and m columns on illumination light; and enabling communication for controlling a communicable range of data transmitted from the transmitting means to visible light A range control unit; a self-address storage unit for storing a self-address; and the address transmitted from a plurality of lighting fixtures other than the self when a self-address is not stored in the self-address storage unit Receiving means for receiving setting information and data of the maximum number of rows n; and storing a plurality of address setting information received by the receiving means in order of row coordinates and storing the maximum number of rows n A received data storage unit; self-deleting address setting information in which the row coordinate is the middle among a plurality of address setting information stored in the received data storage unit after a lapse of a predetermined time since the last data reception by the receiving unit; A data processing means for determining the address and storing the address setting information in the self address storage section and outputting address setting information obtained by adding 1 to the column coordinates of the self address stored in the self address storage section to the transmission means. It is characterized by that.

  In the present invention and the following inventions, definitions and technical meanings of terms are as follows. Visible light communication refers to transmitting a modulated optical signal superimposed on illumination light visible to the human eye as data. The address setting information of the lighting fixture indicated by the row coordinate and the column coordinate is indicated by the row coordinate i and the column coordinate j for setting the address of each lighting fixture arranged in a grid of n rows and m columns. Information (i, j). Further, the data of the maximum number of rows n of n rows and m columns is, for example, when a plurality of lighting fixtures arranged in a lattice form is 3 rows and 3 columns, the maximum number of rows is 3, and 4 rows In the case of 4 columns, the maximum number of rows is 4.

  The communicable range of data transmitted from the transmitting means refers to a receivable range of an optical signal in visible light communication that is modulated and transmitted by illumination light. The communicable range control means sets and controls the receivable range of the optical signal in visible light communication. The self-address is a unique address set so that each lighting fixture does not overlap with other lighting fixtures.

  The light receiving element is, for example, an element that can convert an optical signal into an electric signal, and receives an optical signal in visible light communication that is transmitted after being modulated into illumination light and converts the optical signal into an electric signal. “Arranging a plurality of address setting information in the order of row coordinates” means arranging the plurality of address setting information in the order of the size of the row coordinates (smallest order or larger order) of the plurality of address setting information received by the receiving means.

  “After the elapse of a predetermined time since the last data reception” is “after the elapse of a predetermined time since the reception of new address setting information has ceased”. The predetermined time is a time obtained by adding an extra time to the turn-on / off interval time when the lighting fixture is repeatedly turned on and off for address setting.

  "Multiple address setting information stored in the reception data storage unit" means that when other lighting fixtures are repeatedly turned on and off for address setting, it is received by the receiving element of the own lighting fixture, It refers to a plurality of address setting information stored in its own received data storage unit.

  The “address setting information in which the row coordinate is the middle of the plurality of address setting information” is arranged in the order of the size of the row coordinates (in ascending order or descending order) when the plurality of address setting information is an odd number. The address setting information in which the line coordinates of the plurality of address setting information are in the middle.

  A lighting system according to a second aspect of the present invention is the lighting system according to the first aspect, wherein the data processing means includes address setting information in which a row coordinate is middle among a plurality of address setting information stored in the received data storage unit. If there is not, it is determined whether there is address setting information including the maximum number of rows n in the row coordinates of a plurality of address setting information, and there is no address setting information including the maximum number of rows n Includes address setting information having dummy row coordinates in either the first row or the last row of the plurality of address setting information arranged in the row coordinate order, and there is address setting information including the maximum number of rows n. In this case, address setting information having dummy row coordinates is added to either the first row or the last row of the plurality of address setting information arranged in the row coordinate order, and the dummy Row coordinate of the plurality of address setting information added to the address setting information having rows coordinate and determines the address setting information in the middle as the own address.

  According to the present invention, in the invention of claim 1, when there is no address setting information in which the row coordinate is the middle among the plurality of address setting information stored in the received data storage unit, the address setting information in which the row coordinate is in the middle is obtained. It is what I did.

  A lighting system according to a third aspect of the present invention is the lighting system according to the first or second aspect, wherein the data processing means turns off an adjacent lighting fixture in a state where the self-address is determined and stored in the self-address storage unit. When the lighting device is turned on and turned off after a predetermined time has elapsed, the address setting information obtained by adding 1 to the column coordinate of the self address stored in the self address storage unit while the lighting device is turned on It outputs to a transmission means, It is characterized by the above-mentioned.

  According to the present invention, in the invention of claim 1 or 2, the lighting apparatus is automatically turned on and off for address setting.

  According to the invention of claim 1, when other lighting fixtures are repeatedly turned on and off for address setting, a plurality of address setting information is received by the receiving element of the own lighting fixture, Since the address setting information whose coordinates are in the middle is determined as a self address, address setting of a plurality of lighting fixtures arranged in a grid of n rows and m columns can be automatically performed without duplication of addresses.

  According to the invention of claim 2, when there is no address setting information in which the line coordinate is the middle among the plurality of address setting information stored in the received data storage unit, the address setting information having a dummy line coordinate is added. Thus, since the address setting information with the middle row coordinate is obtained, the difference in the number of address setting information caused by the position of the lighting fixture can be corrected, and the range that can be automatically set can be expanded.

  According to the invention of claim 3, when an adjacent lighting fixture is turned off in a state where the self address is determined, the lighting fixture is turned on, and address setting information obtained by adding 1 to the column coordinate of the self address is transmitted. In addition, since the light is turned off after a predetermined time has elapsed, the lighting fixture for address setting can be automatically turned on / off. As a result, address setting errors can be reduced and address setting can be performed more easily.

  FIG. 1 is a configuration diagram of a lighting system according to an embodiment of the present invention. The plurality of lighting fixtures 11a to 11i are arranged in a grid of n rows and m columns on the ceiling of a building, for example, to constitute a lighting system. FIG. 1 shows a lighting system in which a total of nine lighting fixtures 11a to 11i are arranged in three rows and three columns (n = 3, m = 3). Since each lighting fixture 11a-11i is the same structure, the lighting fixture 11a is demonstrated.

  The transmission means 12 transmits the data for visible light communication superimposed on the illumination light. The visible light communication data is information for setting the address of the luminaire 11, the luminaire address setting information (x, y) indicated by the row coordinates and the column coordinates, and the maximum row of n rows and m columns. The number n. Although details will be described later, in the case of 3 rows and 3 columns (n = 3, m = 3), the maximum number of rows is 3.

  The communicable range control unit 13 controls the communicable range of data transmitted from the transmission unit 12 through visible light. For example, as shown in FIG. 2, the communicable range is controlled so that data can be communicated to eight lighting fixtures 11 located all around, with the lighting fixture 11 (sender) transmitting data as the center. To do. In the following description, it is assumed that the communicable range is a range of eight lighting fixtures 11 located around the entire circumference of the source lighting fixture shown in FIG.

  The self-address storage unit 14 stores a self-address, and the self-address storage unit 14 stores the self-address determined as the self-address by the data processing unit 15.

  The receiving means 16 receives external visible light communication data, and is transmitted from the transmitting means 12 of a plurality of lighting fixtures 11 other than the self when the self address is not stored in the self address storage unit 14. When the address setting information (x, y) and the data of the maximum number of rows n are received, a plurality of address setting information (x, y) are arranged and stored in the received data storage unit 17 in the order of the row coordinates.

  The data processing unit 15 has the row coordinate of the plurality of address setting information (x, y) stored in the reception data storage unit 17 in the middle after a lapse of a predetermined time since the reception unit 16 received the last data. Address setting information (xm, ym) is determined as a self-address and stored in the self-address storage unit 14.

  On the other hand, when there is no middle address setting information (xm, ym) among the plurality of address setting information (x, y) stored in the received data storage unit 14, a plurality of address setting information (x , Y), it is determined whether or not address setting information (n, y) including the maximum number of lines n exists in the line coordinates, and there is no address setting information (n, y) including the maximum number of lines n. In this case, address setting information (0, y) having dummy row coordinates is added to either the first row or the last row of the plurality of address setting information arranged in the row coordinate order. In this case, when the address setting information is arranged in ascending order of the line coordinates, the address setting information (0, y) having dummy line coordinates is added to the first line, and the address setting information is arranged in the descending order of the line coordinates. If there is, address setting information (0, y) having dummy row coordinates is added to the last row.

  When there is address setting information (n, y) including the maximum number n of rows, dummy row coordinates are provided on the other of the first row and the last row of the plurality of address setting information arranged in the row coordinate order. Address setting information (n + 1, y) is added.

In this case, when the address setting information is arranged in ascending order of the line coordinates, the address setting information (n + 1, y) having dummy line coordinates is added to the last line, and the address setting information is arranged in the descending order of the line coordinates. If there is, the address setting information (n + 1, y) having dummy row coordinates is added to the first row.

  Then, the address setting information (xm, ym) having the middle row coordinate among the plurality of address setting information (x, y) to which the address setting information (n + 1, y) having the dummy row coordinates is added is determined as a self address. And stored in the self-address storage unit 14.

  Further, the data processing means 15 creates address setting information (x, y + 1) obtained by adding 1 to the column coordinates of the self address stored in the self address storage unit 14 while the lighting apparatus 11 is turned on, and transmits the data 12. Output to. The transmission unit 12 performs visible light communication by superimposing the address setting information (x, y + 1) and the maximum number of rows n created by the data processing unit 15 on the illumination light of the lighting fixture 11.

  Further, the data processing means 15 turns on its own lighting fixture 11 and turns it on for a predetermined time T1 when the adjacent lighting fixture 11 is extinguished while the self-address is determined and stored in the self-address storage section 14. Turns off after elapse.

  Next, a case where addresses are set in nine lighting fixtures 11a to 11i arranged in a 3 × 3 grid pattern will be described. First, addresses are set in advance in the lighting devices 11a, 11d, and 11g in the first row. An address (1, 1) is set in advance for the lighting fixture 11a, an address (2, 1) is set in advance for the lighting fixture 11d, and an address (3, 1) is set in advance for the lighting fixture 11g.

  In this state, first, only the lighting fixture 11a in the first row and the first column is turned on, and the address setting information (x, y) and the maximum number n of rows from the transmission means 12 are superimposed on the illumination light of the lighting fixture 11, and visible light communication is performed. To do. Address setting information (x, y) for visible light communication from the lighting fixture 11a is address setting information (1, 2) obtained by adding 1 to the column coordinates of the address (1, 1) of the lighting fixture 11a.

  FIG. 3 is an explanatory diagram of lighting of the lighting fixture and reception of visible light communication data during the address setting operation. As shown in FIG. 3 (a), when the lighting device 11a in the first row and the first column is lit and visible light communication is performed, the communicable range is determined as shown in FIG. The lighting fixtures which can receive the visible light communication data which 11a is transmitting by visible light communication are the three lighting fixtures 11b, 11d, and 11e.

  Since the address (2, 1) is set in advance in the lighting device 11d of 2 rows and 1 column as described above, the self address is already stored in the self address storage unit 14. Accordingly, it is the lighting fixtures 11b and 11e that receive the visible light communication data transmitted by the lighting fixture 11a in the first row and the first column by the visible light communication, and the lighting fixtures 11b and 11e are the lighting fixtures in the first row and the first column. The address setting information (1, 2) transmitted by the visible light communication 11a is received by the receiving means 16 and stored in the received data storage unit 17. The lighting device 11a in the first row and the first column is lit for a predetermined time T1 and is turned off when visible light communication is performed.

  Next, when the luminaire 11a is turned off, as shown in FIG. 3B, the luminaire 11d adjacent to the luminaire 11a and storing the self address is turned on and visible light communication is started. Of the lighting fixtures 11b, 11d, and 11e adjacent to the lighting fixture 11a in the first row and the first column, only the lighting fixture 11d has its own address stored in the self-address storage unit 14.

  Address setting information (x, y) for visible light communication from the lighting fixture 11d is address setting information (2, 2) obtained by adding 1 to the column coordinates of the address (2, 1) of the lighting fixture 11d. When the lighting device 11d of 2 rows and 1 column is lit and performing visible light communication, the lighting devices in the communicable range are the five lighting devices 11a, 11b, 11e, 11g, and 11h. As described above, the address (1, 1) is set in advance for the lighting device 11a in the first row and the first column, and the address (3, 1) is set in advance in the lighting device 11g in the third row and the first column. The self-address is already stored in the self-address storage unit 14 of the lighting fixtures 11a and 11g. Therefore, it is the lighting fixtures 11b, 11e, and 11h that receive the visible light communication data that the lighting fixture 11d of 2 rows and 1 column transmits by visible light communication, and the lighting fixtures 11b, 11e, and 11h are the lighting fixture 11d. The address setting information (2, 2) transmitted by visible light communication is received by the receiving means 16 and stored in the received data storage unit 17. The luminaire 11d is turned on for a predetermined time T1 and turned off when visible light communication is performed.

  Next, when the luminaire 11d is turned off, as shown in FIG. 3C, the luminaire 11g adjacent to the luminaire 11d and having the self address stored in the self address storage unit 14 is turned on and visible light communication is performed. To start. Of the lighting fixtures 11a, 11b, 11e, 11g, and 11h adjacent to the lighting fixture 11d in 2 rows and 1 column, only the lighting fixture 11g has the self address stored in the self address storage unit 14.

  The address setting information (x, y) for performing visible light communication from the lighting fixture 11g is address setting information (3, 2) obtained by adding 1 to the column coordinates of the address (3, 1) of the lighting fixture 11g. When the lighting fixture 11g of 3 rows and 1 column lights and visible light communication is carried out, the lighting fixtures in the communicable range are the three lighting fixtures 11d, 11e, and 11h. As described above, since the address (2, 1) is set in advance in the lighting device 11d of 2 rows and 1 column, the self address is already stored in the self address storage unit 14 of the lighting device 11d. Therefore, it is the lighting fixtures 11e and 11h that receive the visible light communication data transmitted by the lighting fixture 11g in the 3 rows and 1 column by the visible light communication, and the lighting fixtures 11e and 11h have the visible light communication. The receiving unit 16 receives the address setting information (3, 2) transmitted in step S1 and stores it in the received data storage unit 17. The luminaire 11g is turned on for a predetermined time T1 and turned off when visible light communication is performed.

  FIG. 4 is an explanatory diagram of the address setting information (x, y) stored in the reception data storage unit 17 of the lighting devices 11b, 11e, and 11h in the second row. As shown in FIG. 4, the addresses (1, 1), (2, 1), (3) of the lighting fixtures 11a, 11d, and 11g are stored in the self-address storage unit 14 of the lighting fixtures 11a, 11d, and 11g in the first row. 1) is stored. Further, the address setting information (1, 2) from the lighting fixture 11a and the address setting information (2, 2) from the lighting fixture 11d are stored in the received data storage unit 17 of the lighting fixture 11b in the first row and the second column in the order of row coordinates. The received data storage unit 17 of the lighting device 11e arranged in 2 rows and 2 columns stores the address setting information (1, 2) from the lighting device 11a and the address setting information (2, 2) from the lighting device 11d. The address setting information (3, 2) from the lighting fixture 11g is stored in the order of the line coordinates, and the received data storage unit 17 of the lighting fixture 11h in 3 rows and 2 columns stores the address setting information ( 2, 2), the address setting information (3, 2) from the luminaire 11g is stored in the line coordinate order.

  Since the number of address setting information stored in the reception data storage unit 17 of the lighting device 11e of 2 rows and 2 columns is 3 and an odd number, it is possible to specify the address setting information (xm, ym) whose row coordinates are in the middle. it can. That is, (2, 2) of (1, 2), (2, 2), (3, 2) is determined as the self address of the lighting fixture 11e and stored in the self address storage unit 14.

  On the other hand, since the number of address setting information stored in the reception data storage unit 17 of the lighting device 11b in the 1st row and 2nd column and the lighting device 11h in the 3rd row and 2nd column is 2 and an even number, the address setting in which the row coordinates are in the middle Information (xm, ym) cannot be specified.

  Therefore, as described above, the data processing means 15 determines whether or not there is address setting information (n, y) including the maximum number of lines n in the row coordinates x of the plurality of address setting information (x, y). If the address setting information (n, y) including the maximum number of lines n is not present, the address setting information having dummy line coordinates in the first or last line of the plurality of address setting information arranged in the line coordinate order Add (0, y). Further, when there is address setting information (n, y) including the maximum number of lines n, address setting information having dummy line coordinates in the last line or the first line of a plurality of address setting information arranged in the order of the line coordinates ( n + 1, y) is added.

  Then, the address setting information (xm, ym) in which the row coordinate is the middle among the plurality of address setting information (x, y) to which the address setting information (0, y), (n + 1, y) having dummy row coordinates is added. ) Is determined as a self-address and stored in the self-address storage unit 14.

  For example, the data receiving unit 17 of the lighting device 11b in the first row and the second column stores (1, 2), (2, 2) as address setting information (x, y) in ascending order of row coordinates. Address setting information including the maximum number of rows 3 is not stored. Therefore, as shown in FIG. 5, address setting information having dummy row coordinates of (0, 2) is added to the first row. Then, the address in which the row coordinate among the plurality of address setting information (0, 2), (1, 2), (2, 2) to which address setting information (0, 2) having dummy row coordinates is added is the middle. The setting information (1, 2) is determined as the self-address of the lighting fixture 11b and stored in the self-address storage unit 14 of the lighting fixture 11b. As address setting information (x, y), when (2, 2), (1, 2) are stored in descending order of row coordinates, (0, 2) dummy row coordinates are provided. Address setting information will be added to the last line.

  On the other hand, in the data receiving unit 17 of the lighting device 11h in 3 rows and 2 columns, (2, 2) and (3, 2) are stored as address setting information (x, y) in ascending order of row coordinates. Since address setting information (3, 2) including the maximum number of lines 3 is stored, address setting information having dummy line coordinates (4, 2) is added to the last line as shown in FIG. . Then, the address in which the row coordinate among the plurality of address setting information (2, 2), (3, 2), (4, 2) to which address setting information (4, 2) having dummy row coordinates is added is the middle. The setting information (3, 2) is determined as the self-address of the lighting fixture 11h and stored in the self-address storage unit 14 of the lighting fixture 11h. As address setting information (x, y), when (3, 2), (2, 2) are stored in descending order of row coordinates, (4, 2) dummy row coordinates are provided. Address setting information will be added to the first line.

  Thereby, the address of the lighting fixture 11b is set to (1, 2), the address of the lighting fixture 11e is set to (2, 2), and the address of the lighting fixture 11h is set to (3, 2).

  Next, when the lighting fixture 11g is turned off, as shown in FIG. 3D, the lighting fixture 11h adjacent to the lighting fixture 11g and having its own address stored in the self-address storage unit 14 is turned on and visible light is emitted. Start communication. The address setting information (x, y) for visible light communication from the lighting fixture 11h is address setting information (3, 3) obtained by adding 1 to the column coordinates of the address (3, 2) of the lighting fixture 11h.

  When the lighting fixture 11h is turned on and visible light communication is performed, the lighting fixtures in the communicable range are the five lighting fixtures 11d, 11e, 11f, 11g, and 11i. As described above, the addresses (2, 1) and (3, 1) are set in advance in the lighting fixtures 11d and 11g, and the self-address (2, 1) is already stored in the self-address storage unit 14 of the lighting fixtures 11d and 11g. , (3, 1) are stored. Further, the address is already determined in the self-address storage unit 14 of the lighting fixture 11e, and the self-address (2, 2) is stored. Therefore, it is the luminaires 11f and 11i that receive the visible light communication data that the luminaire 11h is transmitting by visible light communication, and the luminaires 11f and 11i are transmitting by the luminaire 11h by visible light communication. The address setting information (3, 3) is received by the receiving means 16 and stored in the received data storage unit 17. The luminaire 11h is turned on for a predetermined time T1 and turned off when visible light communication is performed.

  Next, when the lighting fixture 11h is turned off, as shown in FIG. 3E, the lighting fixture 11e adjacent to the lighting fixture 11h and having the self address stored in the self address storage unit 14 is turned on and visible light is emitted. Start communication. Address setting information (x, y) for performing visible light communication from the lighting fixture 11e is address setting information (2, 3) obtained by adding 1 to the column coordinates of the address (2, 2) of the lighting fixture 11e.

  When the lighting fixture 11e is turned on and visible light communication is performed, the lighting fixtures in the communicable range are eight lighting fixtures 11a, 11b, 11c, 11d, 11f, 11g, 11h, and 11i. As described above, the addresses (1, 1), (2, 1), (3, 1) are set in advance in the lighting fixtures 11a, 11d, and 11g, and the self-address storage unit 14 of the lighting fixtures 11a, 11d, and 11g. Already stores its own address (1, 1), (2, 1), (3, 1). Further, the addresses are already determined in the self-address storage units 14 of the lighting fixtures 11b and 11h, and the self-addresses (1, 2) and (3, 2) are stored. Accordingly, it is the lighting fixtures 11c, 11f, and 11i that receive the visible light communication data transmitted by the lighting fixture 11e through visible light communication, and the lighting fixtures 11e, 11f, and 11i receive the visible light communication data through the visible light communication. The address setting information (2, 3) being transmitted is received by the receiving means 16 and stored in the received data storage unit 17. The luminaire 11e is turned on for a predetermined time T1 and turned off when visible light communication is performed.

  Next, when the luminaire 11e is turned off, as shown in FIG. 3F, the luminaire 11b adjacent to the luminaire 11e and having the self address stored in the self address storage unit 14 is turned on and visible light is emitted. Start communication. The address setting information (x, y) for performing visible light communication from the lighting fixture 11b is address setting information (1, 3) obtained by adding 1 to the column coordinates of the address (1, 2) of the lighting fixture 11b.

  When the lighting fixture 11b is turned on and visible light communication is performed, the lighting fixtures in the communicable range are the five lighting fixtures 11a, 11c, 11d, 11e, and 11f. As described above, the addresses (1, 1) and (2, 1) are set in advance in the lighting fixtures 11a and 11d, and the self address (1, 1) is already stored in the self-address storage unit 14 of the lighting fixtures 11a and 11d. , (2, 1) are stored. Further, the address is already determined in the self-address storage unit 14 of the lighting fixture 11e, and the self-address (2, 2) is stored. Therefore, it is the luminaires 11c and 11f that receive the visible light communication data transmitted by the luminaire 11b by visible light communication, and the luminaires 11c and 11f are transmitted by the luminaire 11b by visible light communication. The address setting information (1, 3) is received by the receiving means 16 and stored in the received data storage unit 17. The luminaire 11b is turned on for a predetermined time T1 and turned off when visible light communication is performed.

  FIG. 6 is an explanatory diagram of the address setting information (x, y) stored in the reception data storage unit 17 of the lighting fixtures 11c, 11f, and 11i in the third row. As shown in FIG. 6, the addresses (1, 2), (2, 2), (3) of the lighting fixtures 11b, 11e, and 11h are stored in the self-address storage unit 14 of the lighting fixtures 11b, 11e, and 11h in the second row. 2) is stored. Further, the address setting information (1, 3) from the lighting fixture 11b and the address setting information (2, 3) from the lighting fixture 11e are stored in the received data storage section 17 of the lighting fixture 11c in the first row and the third column in the order of row coordinates. The received data storage unit 17 of the lighting apparatus 11e in the 2 rows and 3 columns is arranged and stored in the address setting information (1, 3) from the lighting apparatus 11b and the address setting information (2, 3) from the lighting apparatus 11e. The address setting information (3, 3) from the lighting fixture 11h is stored in the order of row coordinates, and the address setting information (from the lighting fixture 11e ( 2, 3), the address setting information (3, 3) from the luminaire 11h is stored in alignment in the row coordinate order.

  Since the number of address setting information stored in the reception data storage unit 17 of the lighting device 11f of 2 rows and 3 columns is 3 and an odd number, it is possible to specify the address setting information (xm, ym) whose row coordinates are the middle. it can. That is, (2, 3) of (1, 3), (2, 3), and (3, 3) is determined as the self address of the lighting fixture 11f and stored in the self address storage unit 14 of the lighting fixture 11f. .

  On the other hand, since the number of address setting information stored in the reception data storage unit 17 of the lighting device 11c in the first row and the third column and the lighting device 11i in the third row and the third column is 2 and an even number, the address setting in which the row coordinates are in the middle. Information (xm, ym) cannot be specified. Therefore, as described above, address setting information having dummy row coordinates is added, address setting information (xm, ym) having the middle row coordinate is determined as a self address, and stored in the self address storage unit 14.

  For example, (1, 3), (2, 3) are stored as address setting information (x, y) in ascending order of row coordinates in the data receiving unit 17 of the lighting apparatus 11c in 1 row and 3 columns. Address setting information including the maximum number of rows 3 (n = 3) is not stored. Therefore, as shown in FIG. 7, address setting information having dummy row coordinates of (0, 3) is added to the first row. Then, the address in which the row coordinate among the plurality of address setting information (0, 3), (1, 3), (2, 3) to which address setting information (0, 3) having dummy row coordinates is added is the middle. The setting information (1, 3) is determined as the self-address of the lighting fixture 11c and stored in the self-address storage unit 14 of the lighting fixture 11c.

  As address setting information (x, y), when (2, 3), (1, 3) and the row coordinates are stored in descending order, (0, 3) has dummy row coordinates. Address setting information will be added to the last line.

  On the other hand, (2, 3), (3, 3) are stored as address setting information (x, y) in the data receiving unit 17 of the lighting device 11i in 3 rows and 3 columns, and the maximum number of rows is 3. Since the included address setting information (3, 3) is stored, the address setting information having the dummy row coordinates (4, 3) is added to the last row as shown in FIG. Then, the address in which the row coordinate among the plurality of address setting information (2, 3), (3, 3), (4, 3) to which the address setting information (4, 3) having dummy row coordinates is added is the middle. The setting information (3, 3) is determined as the self-address of the lighting fixture 11i and stored in the self-address storage unit 14 of the lighting fixture 11i. Note that (3, 3), (2, 3) and (4, 3) dummy row coordinates are stored as the address setting information (x, y) in the descending order of the row coordinates. Address setting information will be added to the first line.

  Thereby, the address of the lighting fixture 11c is set to (1, 3), the address of the lighting fixture 11f is set to (2, 3), and the address of the lighting fixture 11i is set to (3, 3).

  As described above, when performing address setting, a plurality of lighting fixtures 11 arranged in a grid of n rows and m columns are sequentially turned on and off to perform visible light communication, and an address is set for each lighting fixture 11. It will follow.

  Next, lighting on / off of the plurality of lighting fixtures 11 and data transmission / reception by visible light communication at the time of address setting will be described.

  FIG. 8 is a flowchart showing the contents of transmission processing in visible light communication by the data processing means 15 of the luminaire 11. First, it is determined whether or not the self address is stored in the self address storage unit 14 (S1), and if the self address is stored, it is determined whether or not the adjacent lighting fixture 11 is turned off ( S2). And when the adjacent lighting fixture 11 is extinguished, its own lighting fixture is lighted (S3). And it outputs to the address setting information transmission means 12 which added 1 to the column coordinate of an own address (S4). As a result, the transmission means 12 transmits the address setting information obtained by adding 1 to the column coordinate of its own address by visible light communication. Then, it is determined whether or not the predetermined time T1 has passed (S5). When the predetermined time T1 has passed, the own lighting apparatus is turned off (S6).

  The reason why the lighting fixture 11 for which the self address has already been set is to be turned on is to transmit address setting information to be newly given from the lighting fixture 11 to be turned on. The reason why the adjacent lighting fixture 11 is turned on after confirming that it is turned off is to prevent the visible light communication from being mixed. The reason why the address setting information obtained by adding 1 to the column coordinate of its own address is transmitted is to prevent the addresses of the respective lighting fixtures 11 from overlapping. The predetermined time T <b> 1 is set to allow time for the time when the luminaire 11 in the visible light communication range can reliably receive the visible light communication data.

  FIG. 9 is a flowchart showing the contents of reception processing in visible light communication by the data processing means 15 of the lighting fixture 11. First, it is determined whether or not the received visible light communication data is new data (S11). If it is new data, the received data is stored (S12). In other words, when the address setting information (x, y) is new data, the received address setting information (x, y) is stored in the received data storage unit 17.

  If it is determined in step S11 that the data is not new data, it is determined whether or not the predetermined time T2 has elapsed (S13). If the predetermined time T2 has not elapsed, the process returns to step S11. The predetermined time T2 is set to a time obtained by adding a margin value to the time required to receive visible light communication data transmitted from all the lighting fixtures 11 in the communicable range. In the case of the embodiment of the present invention, since the visible light communication data in the communicable range is a maximum of three, the address setting information (x, y) thereof is reliably received from the three lighting fixtures 11. The possible time, that is, T2> 3T1 + α is set. T1 is a predetermined time when the lighting fixture 11 is turned on, and α is the total time from when the lighting fixture 11 is turned off until the next adjacent lighting fixture 11 is turned on.

  When the predetermined time T2 has elapsed, a maximum of three pieces of address setting information (x, y) necessary for address setting are stored in the received data storage unit 17. Therefore, the address setting information (x, y) stored in the received data storage unit 17 is arranged in the row coordinate order (S14). For example, they are arranged in ascending order. Then, it is determined whether or not the line coordinates are in the middle in a plurality of address setting information (S15). If the line coordinates are in the middle, the address setting information (xm, ym) in which the line coordinates are in the middle is self-addressed. Is stored in the self-address storage unit 14 (S16). For example, since the address setting information (1, 2) (2, 2) (3, 2) is stored in the reception data storage unit 17 of the lighting fixture 11e in FIG. 4, the line coordinate is (2, 2) is stored as an address.

  If it is determined in step S15 that the line coordinate is not in the middle, it is determined whether or not there is a maximum line number n in the line coordinate among a plurality of address setting information (S17). Adds address setting information having a dummy row coordinate to the last row of a plurality of address information (S18), and stores the address setting information (xm, ym) in the middle of the row coordinate in the self address storage unit 14 as a self address. (S16). For example, like the reception data storage unit 17 of the lighting fixture 11h in FIG. 5, address setting information (4, 2) having a dummy row coordinate is added, and (3, 2) having the middle row coordinate is used as an address. Remember.

  On the other hand, if it is determined in step S17 that there is no maximum row number n, address setting information having a dummy row coordinate is added to the first row of the plurality of address information (S19), and the address setting information (middle row coordinate) ( xm, ym) are stored as self addresses in the self address storage unit 14 (S16). For example, like the received data storage unit 17 of the lighting apparatus 11b in FIG. 5, address setting information (0, 2) having a dummy row coordinate is added, and (1, 2) having the middle row coordinate is used as an address. Remember.

  In the embodiment of the present invention, addresses (1, 1), (2, 1), (3, 1) are set in advance as initial settings for the first row of lighting fixtures 11a, 11d, and 11g. The luminaire 11 communicates the address setting information in which the column number is increased by one and the maximum number of rows n to the adjacent luminaire by visible light. Then, in response to the turn-off of the adjacent lighting fixture 11, the lighting fixture 11 of the next address is turned on, visible light communication is performed, and address setting information is transmitted by a relay method. The luminaire whose address is not set sets, as its own address, the address setting information in which the line coordinate is the middle of the address setting information that has been communicated with visible light. If there is no address information with the middle line coordinate, address setting information having a dummy line coordinate is added to obtain address information with the middle line coordinate.

  Accordingly, the address setting can be automatically performed, and the physical arrangement and the magnitude relationship of the addresses can be set with regularity. Further, it is possible to eliminate an error at the time of address setting due to a difference in the number of received addresses caused by the position of the lighting fixture.

  In the above description, when there is no address setting information with a middle line coordinate in a plurality of address setting information, the address setting information having a dummy line coordinate is added to obtain the address setting information with the middle line coordinate. However, if there is no address setting information with the middle line coordinate in a plurality of address setting information, the address may be set manually.

The block diagram of the illumination system concerning embodiment of this invention. Explanatory drawing of the communicable range of the data communicated by visible light from the transmission means in the communicable range control means in embodiment of this invention. Explanatory drawing of lighting of the lighting fixture in the case of the address setting operation | movement concerning embodiment of this invention, and reception of visible light communication data. Explanatory drawing of the address setting information memorize | stored in the received data storage part of the lighting fixture of the 2nd row in embodiment of this invention. Explanatory drawing of the reception data memory | storage part of the lighting fixture of the 2nd column at the time of adding the address setting information which has a dummy row coordinate to the address setting information of FIG. Explanatory drawing of the address setting information memorize | stored in the received data storage part of the lighting fixture of the 3rd row in embodiment of this invention. Explanatory drawing of the reception data memory | storage part of the lighting fixture of the 3rd column at the time of adding the address setting information which has a dummy row coordinate to the address setting information of FIG. It is a flowchart which shows the transmission processing content of visible light communication in the data processing means of the lighting fixture in embodiment of this invention. It is a flowchart which shows the reception processing content of visible light communication in the data processing means of the lighting fixture in embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Lighting fixture, 12 ... Transmission means, 13 ... Communication possible range control means, 14 ... Self address storage part, 15 ... Data processing means, 16 ... Reception means, 17 ... Reception data storage part

Claims (3)

It consists of a plurality of lighting fixtures arranged in a grid of n rows and m columns, each of the lighting fixtures,
Transmitting means for performing visible light communication by superimposing the address setting information of the lighting fixture indicated by row coordinates and column coordinates and data of the maximum number of rows n of the n rows and m columns on illumination light;
Communicable range control means for controlling a communicable range of data communicated by visible light from the transmitting means;
A self-address storage unit for storing the self-address;
Receiving means for receiving the address setting information and data of the maximum number of rows n transmitted from the transmitting means of a plurality of lighting fixtures other than the self when the self address is not stored in the self address storage unit;
A received data storage section for storing a plurality of address setting information received by the receiving means in an order of row coordinates and storing the maximum number of rows n;
The address setting information having the middle row coordinate among the plurality of address setting information stored in the received data storage unit after the elapse of a predetermined time since the reception of the last data by the receiving means is determined as the self address, and the self A data processing unit that stores in the address storage unit and outputs address setting information obtained by adding 1 to the column coordinate of the self address stored in the self address storage unit to the transmission unit;
An illumination system comprising:   The data processing means, when there is no address setting information in the middle of the row coordinates of the plurality of address setting information stored in the received data storage unit, the maximum number of rows in the row coordinates of the plurality of address setting information It is determined whether or not address setting information including n exists, and if there is no address setting information including the maximum number of lines n, the first or last line of a plurality of address setting information arranged in line coordinate order Address setting information having dummy row coordinates is added to any one of the above, and when there is address setting information including the maximum number of rows n, the first row or the last row of a plurality of address setting information arranged in row coordinate order A plurality of address settings in which address setting information having dummy row coordinates is added to one of the other rows, and address setting information having the dummy row coordinates is added. Lighting system according to claim 1, wherein the row coordinate of the distribution to determine the address setting information in the middle as the own address.   When the self-address is determined and stored in the self-address storage unit and the adjacent lighting fixture is turned off, the data processing means turns on the lighting fixture and turns off the lighting fixture after a predetermined time. 3. The lighting system according to claim 1, wherein address setting information obtained by adding 1 to a column coordinate of a self-address stored in the self-address storage unit is output to the transmission unit while the lighting fixture is turned on.

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