JP2557577Y2 - Lighting control system - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a lighting control system based on a communication system using a transmission communication path, which controls a plurality of lighting loads installed in a building at once and controls the current lighting load state. The present invention relates to a lighting control system for monitoring and monitoring.

[0002]

2. Description of the Related Art Conventionally, a lighting control system for centrally controlling a large number of lighting loads, such as a building or a factory, or monitoring and monitoring a lighting state by a time-division multiplexing method using a signal line is known as a conventional apparatus. is there. In this method, a large number of lighting loads arranged in a building are divided into control units that are controlled on and off collectively, the lighting loads of each control unit are connected to terminals, and these terminals are connected to these terminals by a common transmission line. This is a lighting control device that individually transmits address data and control data from a master unit by a time-division multiplexing method and controls on / off of a lighting load of an arbitrary control unit. In these devices, an individual address is assigned to each terminal device, and one-to-one control is performed by a control signal including address data from the parent device. Therefore, there is a problem that it takes a long time in the control for performing the control of one station to many stations.

[0003]

In the above prior art, when a plurality of lighting control devices and terminals are connected to a signal line, it is desired to control and monitor a plurality of terminals by a control signal from the lighting control device. Think. In this case, in the conventional one-to-one communication method, signals are sequentially transmitted from the lighting control device to the addresses of all the terminals. This method has a problem that it takes a very long time for one control. In addition, in a method in which all terminals receive a broadcast signal, all terminals transmit an answerback, so it takes a long time until the signal content is destroyed by a signal collision and the signal returns to a normal state. There is such a problem. An object of the present invention is to solve this problem and to provide a reliable lighting control system that can control a plurality of terminals by one communication of a lighting control device and can display a monitor.

[0004]

In order to achieve the above object, in the lighting control system of the present invention, a setting unit for setting a base unit address in a lighting control device connected to a signal line and a remote display for a terminal. Provide an operation unit and a monitor display unit of the lighting load of the terminal device, and also provide a slave unit address setting unit that sets a slave unit address in the terminal device that controls the lighting load,
This is achieved by using a control signal including a master unit address and a slave unit address as a control signal, and controlling the lighting load with a control signal having a dependent relationship in which the master unit address and the slave unit address are ranked. You.

[0005]

In the above-mentioned lighting control system, the order is set for the master unit address of the lighting control unit, the terminal unit of the slave unit address that operates based on the order of the master unit address of the lighting control unit is set, and the master unit address is set. The terminals of the group of the slave addresses grouped according to the order perform the same operation, and the answerback to the lighting control device is transmitted only by the terminal having the specific slave address, and the lighting is performed according to the answerback of the terminal. The control device displays on the monitor and does not malfunction.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing a basic configuration example of an embodiment of the present invention. According to the present embodiment, the lighting control device 3 and the lighting load 5 are connected to the power line 2 branched by the distribution board 1, and the dedicated signal line 4 for transmitting a signal by the time division multiplex transmission method from the lighting control device 3 Is connected to a lighting load 5. The lighting control device 3 stores a master device address indicating its own address, a slave device address for individually selecting each lighting load 5, and a control code for controlling the selected lighting load 5 in each lighting load 5.
Send to The lighting load 5 receives a control signal transmitted from the lighting control device 3 and performs on-off or dimming operation based on the control signal. FIG. 2 shows an example of a control signal transmitted and received between the lighting control device 3 and the lighting load 5. The control signal includes a start signal 20, a parent device address code 21, a child device address code 22, a control code 23, and a stop signal 24. The start signal 20 indicates the start of the control signal. The base unit address 21 indicates the address of the lighting control device 3,
The slave unit address 22 indicates the lighting load 5. The control code 23 indicates operation information such as on / off and dimming control of the lighting load 5 or monitoring information such as an operating state of the lighting load 5. The stop signal 24 indicates the end of the signal. FIG. 3 shows a circuit example of the lighting control device 3. The lighting control device 3 includes a microcomputer 7 for performing information processing, a master unit address switch 8 for setting an address, a slave unit address switch 9, an on-off switch 10 for performing on-off control, and a microcomputer according to the settings of the above switches. 7 comprises a coupler 6 for transmitting and receiving the created control signal and a monitor display 13 for displaying the status of the lighting load 5. FIG. 4 shows a circuit example of the lighting load 5. The lighting load 5 includes a microcomputer 14, a slave unit address switch 15 for setting an address, a coupler 18 for transmitting and receiving a control signal from the lighting control device 3, a lighting circuit 16 operated by control data set according to the control signal, and a lamp. 17. FIG. 5 is an address table diagram showing an embodiment of an address assignment table of the parent device address code 21 and the child device address code 22. The parent device address code 21 and the child device address code 22 are composed of 8 bits, and addresses are assigned by lower 4 bits and upper 4 bits. The lower 4 bits are a code indicating the type of device, and are hexadecimal $ O to $ F. The upper address indicates the numbers of the parent device address code 21 and the child device address code 22,
An operating slave unit address code 22 is assigned to the master unit address code 21. The correspondence between the upper 4 bits of the parent device address code 21 and the child device address code 22 is as follows.
Irrespective of the number of the base unit, the lighting load 5 operates with respect to $ 2 of the base unit address code 21 by the determination of bit 4 of the base unit address code 22, and the base unit address code 21 $ 1 for slave unit address code 2
The lighting load 5 operates according to the determination of bit 4 and bit 5 of 2,
With respect to # 3 of the base unit address code 21, the lighting load 5 operates by determining all four bits of the sub unit address code 22. FIG. 6 is a diagram showing the layout of the lighting loads 5 and the operation unit of the lighting control device 3. FIG. 6A shows that the lighting load 5 of $ 00 to $ F0 of the slave unit address 22 is connected to the signal line 4, and FIG.
The lighting control device 3 of # 20 of # 1 is connected, and the on / off operation unit 10 and the monitor display unit 13 are respectively $ 00,
The slave unit addresses 22 of $ 20, $ 10, and $ 50 are allocated. When the illumination load 5 is on, the monitor display unit 13 displays the monitor display unit 13 on, and when the illumination load 5 is off, the monitor display unit 13 displays off. Now, assuming that all the lighting loads 5 are turned off, pressing the slave unit address 22, $ 00 of the on / off operation unit 10 of the lighting control unit 3, the lighting control unit 3 sets the master unit address 21- # 20 to Transmit the slave unit address 22- $ 00 and ON data. $ 00, $ 40, $ 80, $ C of the slave unit address 22 that matches the master unit address 21 and the slave unit address 22 that received this signal
The illumination load 5 of 0 lights up. Then, $ 00 of the slave unit address 21 transmits an answer back. By this answer back, the slave unit address 2 of the monitor display 13 of the lighting control device 3
$ 00 of 2 lights up. Next, once again, the lighting control device 3
When the user presses $ 00 of the slave unit address 22 of the on-off operation unit 10, $ 00 of the slave unit address 22 is processed in the same procedure as described above.
The lighting loads 5 of # 40, # 80, and # C0 are turned off, and the slave unit address 22 of the monitor display 13 of the lighting control device 3 is turned off. The transmission process of the illumination control device 3 and the reception process of the illumination load 5 will be described with reference to the flowcharts of FIGS. First, the lighting control device 3 reads the switches of the master unit address, the on / off operation unit 10 and the like (step 26), checks the change in the switch state, and repeats until the switch is changed (step 27). A control signal is created by setting the unit address 21, the slave unit address 22, and the control data 23 (process 28). A control signal is transmitted (process 29). Then, a reception process is performed until there is an answerback signal from the lighting load 5. repeat. (Process 30) When the answer back signal is received, the parent device address 21 and the child device address 22 are checked. (Process 3
1) If the addresses match, decode the signal contents (Process 3
2) Monitor display of the illumination load 5 is performed. (Process 33) As shown in FIG. 8, the reception process of the lighting load 5 checks the presence / absence of a control signal, and repeats until a signal is present (Process 34). When the signal is received, the master unit address 21 of the control signal and the slave unit are received. It is checked whether the addresses 22 match, and if they do not match, the receiving process (process 34) is repeated (process 35). If the addresses match, the control signal contents are decoded. (Process 3
6) Check whether the slave unit address 22 of the control signal matches (process 37), and if so, transmit an answer back signal. (Process 38) The lighting load is controlled. As described above, in the lighting control system according to the present embodiment, the order is assigned to the parent device address 21 and the child device address 22
, A group of lighting loads 5 is created. In addition, since the lighting load 5 answers in response to the slave unit address 22, it is possible to prevent collision of signals regardless of the number of loads.

[0007]

According to the present invention, the lighting load can be divided into groups based on the master unit address of the lighting control device, and a plurality of terminals can be controlled by one communication, so that the communication time can be reduced. In addition, since the representative address is determined as the slave unit address, there is no collision of the answer back signal. As a result, the same change in the state of the lighting load can be controlled in a short period of time, and a highly reliable system can be constructed in which a monitor display is performed without error. Further, it is not necessary to change the lighting layout by changing the arrangement of the rooms, but only by changing the master unit address and the slave unit address of the lighting control device. Therefore, the lighting load layout can be freely changed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an overall configuration of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a control signal.

FIG. 3 is a circuit block diagram of a lighting control device.

FIG. 4 is a circuit block diagram of a lighting load.

FIG. 5 is an explanatory diagram of address assignment between a parent device address and a child device address.

FIG. 6 is a layout diagram of a lighting load and an operation unit diagram of a lighting control device.

FIG. 7 is a flowchart of a transmission process of the lighting control device.

FIG. 8 is a flowchart of a reception process of the lighting load 5.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Distribution board 2 ... Electric light line 3 ... Lighting control device 4 ... Signal line 5 ... Lighting load 6 ... Coupler 7 ... Microcomputer 8 ... Base unit address switch

Claims (1)

(57) [Scope of request for utility model registration] 1. A lighting control system for controlling a lighting load by using a signal including a master unit address, a slave unit address, and control data using a signal line in a signal transmission path, a signal transmitting / receiving unit and the master unit A plurality of lighting control devices including an address setting unit for setting an address, an operation unit for performing a remote operation instruction to the lighting load terminal, and a monitor display unit for displaying a state of the lighting load; An address unit for setting an address, and a plurality of terminals comprising a lighting load control unit for controlling the lighting load, wherein the order is set for the master unit address of the lighting control device, and the order of the master unit address is set. Grouping the slave unit addresses of the terminal units into control units for collectively controlling the plurality of lighting loads, and assigning the terminal unit having a specific slave unit address to the designated lighting control device. A lighting control system for transmitting a sensor back.