JP2000286076A - Lighting control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a lighting control system allowing a change of a lighting state according to a use place even if a failure of a master machine, or disconnection or a short circuit of a transmission line occurs. SOLUTION: In a dimming signal terminal 4 of this lighting control system, a control part 17 executes control for outputting a dimming signal of a dimming output on the basis of setting of a switch 14 when a signal from a master machine is not detected in a transmission signal detection part 16 due to a failure of the master machine, or disconnection or a short circuit of a transmission line. For example, the control part 17 outputs 10 V in the case of lighting in the setting of the switch 14, 0 V in the case of extinction, and an untouched lighting level (0-10 V) in the case of the status quo.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting control system for centrally controlling a large number of lighting loads from a master unit via a plurality of terminals, and more particularly to a lighting control system for individually or grouping a plurality of terminals by time division multiplex transmission. The present invention relates to a separately controlled lighting control system.

[0002]

2. Description of the Related Art Conventionally, the above-mentioned lighting control system is connected to a master unit for outputting a dimming data signal for dimming control of a lighting load via a transmission line. A dimming signal terminal for converting the output dimming data signal into a PWM dimming signal and outputting the same, and a dimmer for dimming and controlling a lighting load with the dimming signal output from the dimming signal terminal. And is provided. In addition, this type of system inhibits the output of the dimming signal from the dimming signal terminal when the master unit fails or the transmission line to the master unit is broken or short-circuited, and the lighting load is reduced. Some are provided with a fail-safe function of turning on all lights.

[0003]

By the way, in the conventional lighting control system having the fail-safe function, when the master unit fails or the transmission line with the master unit is disconnected or short-circuited, the lighting load is reduced. There is a problem that the use is limited because the lighting is completely lit and the atmosphere may be destroyed in a place where lighting is performed, such as a stage of a theater or the like.

Accordingly, an object of the present invention is to provide a lighting control system capable of changing a lighting state according to a place of use even if a failure of a base unit or disconnection or short circuit of a transmission line occurs.

[0005]

In order to achieve the above object, a lighting control system according to the first aspect of the present invention includes a master unit for outputting a dimming data signal for dimming control of a lighting load; The dimming data signal output from the
A lighting device comprising: a dimming signal terminal device that converts and outputs an M or DC dimming signal; and a dimmer device that controls a lighting load by a dimming signal output from the dimming signal terminal. A control system, wherein the dimming signal terminal includes transmission signal detecting means for detecting a signal output from the master unit; dimming output setting means for setting a dimming output; A transmission signal disconnection dimming signal output means for outputting a dimming signal of a dimming output based on the setting of the dimming output setting means when it is detected by the means that there is no signal from the master unit. It is characterized by having.

According to this configuration, the master unit and the dimming signal terminal connected to the dimmer are connected via the transmission line, and the master unit transmits a dimming data signal to the dimming signal terminal. Then, the PW based on the dimming data signal from the dimming signal terminal
An M or DC dimming signal is output and supplied to the dimmer. The dimmer performs dimming control of an illumination load such as a lamp by phase control based on the dimming signal.

In the dimming signal terminal, if the signal from the master unit is no longer detected by the transmission signal detection unit due to the failure of the master unit or the disconnection or short circuit of the transmission line, the dimming signal at the time of the transmission signal disconnection. The output means outputs a dimming signal of a dimming output based on the setting of the dimming output setting means. For example, 100% (for example, 10 V for direct current) if the setting by the dimming output setting means is on, 0% (for example, 0 V for direct current) if the setting is off, 0 to 10 V for direct current).

As described above, according to the present invention, the lighting state of the lighting load can be changed. Therefore, even in a place where lighting is performed such as a stage of a theater or the like, a failure of the master unit, disconnection of the transmission line, By setting the lighting state when a short circuit occurs, even if those failures occur, the atmosphere of the place will not be destroyed, and it is possible to provide a lighting control system that can be used more widely than before. Will be possible.

In the illumination control system according to the second aspect of the present invention, the dimming output setting means is a switch which can be manually set, and the dimming signal output means at the time of transmission signal interruption is dimming based on the setting of the switch. It is characterized by outputting an output dimming signal. According to this configuration, the dimming output can be set by operating the switch, so that the dimming output can be easily set.

According to a third aspect of the present invention, in the lighting control system, the dimming output setting means is a memory, and writes setting information for setting a dimming output to the memory and allocates the setting information to the dimming signal terminal. A dimming signal output means for writing a dimming address, wherein the dimming signal output means at the time of transmission signal interruption outputs a dimming signal of a dimming output based on the setting information written in the memory. According to this configuration, since the setting information for setting the dimming output is stored in the memory that stores the address to be allocated to the dimming signal terminal, the memory can be used more efficiently, and the cost can be reduced.

According to a fourth aspect of the present invention, in the illumination control system, the dimming output setting means is a memory, and the master unit writes setting information for setting dimming output in the memory. Means is provided. According to this configuration, since the setting information for setting the dimming output can be written from the master unit to the memory, the dimming output can be easily set (that is, the cover of the dimming signal terminal body can be opened. Setting is easy because there is no need to make settings.)

[0012]

Embodiments of the present invention will be described below with reference to the drawings. (I) First Embodiment FIG. 1 is a block diagram showing a configuration of a first embodiment of a lighting control system according to the present invention. The illumination control system 1 according to the first embodiment includes a master unit 2 that outputs a dimming data signal for dimming control, and is connected to the master unit 2 via a transmission line 3 to perform time division multiplexing. When a light control data signal is transmitted from the base unit 2, the light control data signal is received, converted into a light control signal (DC signal) and output. A dimming signal terminal 4, a dimmer 5 for dimming a lamp (illumination load) 6 by a phase control method using a dimming signal output from the dimming signal terminal 4, and a commercial power supply (100V AC). A remote control transformer 7 for stepping down to an AC 24 V required for operation of the dimming signal terminal 4 and outputting the voltage, and connected to the master unit 2 and the transmission signal line 3;
An up / down switch 8 for transmitting and receiving signals to and from the base unit 2 by the time division multiplexing method and transmitting a data signal for dimming the lamp 6 to the base unit 2 is provided.

A plurality of dimming signal terminals 4 and up / down switches 8 are usually provided, each of which is connected to the transmission line 3 to exchange signals with the master unit 2 by a multiplex transmission system. Do. In this case, an address is assigned to each of the dimming signal terminals 4 and the up / down switch 8, and the master unit 2 manages each of the dimming signal terminals 4 and the up / down switch 8 based on the addresses. One dimming signal terminal 4 may be assigned to the up / down switch 8, or a plurality of dimming signal terminals 4 may be assigned as one group. A plurality of (four in the embodiment) dimmers 5 can be connected to the dimming signal terminal 4.

When an up button 8a of the up / down switch 8 is pressed, an up data signal is transmitted to the base unit 2. Master device 2 receives this update data signal and transmits, for example, a “+1” dimming data signal to each of the previously assigned dimming signal terminal 4 or the plurality of dimming signal terminals. Each of the one dimming signal terminal 4 or the plurality of dimming signal terminals that have received the dimming data signal transmits the lamp 6 to the one specified by the master unit 2 among the dimmers 5 connected to itself. A dimming signal for increasing the luminance to “+1” is output. When the down button 8b is pressed, the parent device 2
Is sent a down data signal. By receiving this down data signal, master device 2 transmits, for example, a dimming data signal of “−1” to one of the dimming signal terminals 4 or a plurality of dimming signal terminals allocated in advance. Each of the one dimming signal terminal 4 or the plurality of dimming signal terminals that have received the dimming data signal transmits the lamp 6 to the one specified by the master unit 2 among the dimmers 5 connected to itself. For example, if the luminance is "-
1 "is output.

As shown in the block diagram of FIG. 2, the dimming signal terminal 4
DC power supply 10 for converting V into DC necessary for the operation of terminal 4 and outputting the same, and a reference voltage section for generating a reference voltage required for D / A converter 12 by converting the DC voltage output from DC power supply 10 11, a D / A converter 12 for digital-to-analog conversion of dimming data output from the controller 17,
An address setting unit 13 for storing an address allocated to the main body of the light control signal terminal 4;
It is provided so as to be exposed from the main body case.
A plurality of switches (dimming output setting means) 14 such as an IP switch capable of different settings; a dimming data signal transmitted from the base unit 2; A transmission / reception unit 15 that transmits a signal to the base unit 2, a transmission signal detection unit (transmission signal detection unit) 16 that detects a signal output from the base unit 2, and a control unit 17 that controls the above units It is configured with. In addition,
The D / A conversion unit 12 and the control unit 17 constitute a dimming signal output unit when a transmission signal is interrupted.

The transmission / reception unit 15 includes a full-wave rectifier 18
And a resistor 19 and a constant voltage diode 20 interposed between one end of the input terminal of the full-wave rectifier 18 and the (−) output terminal.
A resistor 21 inserted between the output terminals of the full-wave rectifier 18;
22 and a transistor 23. The dimming data signal from the master unit 2 includes a resistor 19 and a constant voltage diode 20.
The transmission of the data signal to the master unit 2 is performed by driving the transistor 22 on / off. The transmission signal detecting section 16 includes a smoothing circuit including a diode 24 and a capacitor 25, and a resistor 26 and a constant voltage diode 27 interposed in parallel on the output side of the smoothing circuit. The presence / absence of a transmission signal from master device 2 is determined by the presence / absence of a voltage at the connection between resistor 26 and constant voltage diode 27.

In the lighting control system thus configured, when a light control data signal is transmitted from the master unit 2 to the light control signal terminal 4, the transmission / reception unit 1 of the light control signal terminal 4
5 and the received dimming data signal is transmitted to the control unit 1
7. The control unit 17 supplies the fetched dimming data signal to the D / A converter 12. D / A converter 1
When the dimming data signal is supplied to 2, a DC dimming signal based on the dimming data signal is output and supplied to the dimmer 5. The dimmer 5 performs dimming control of the lamp 6 based on the dimming signal by, for example, phase control.

On the other hand, in the dimming signal terminal 4, the failure of the master unit 2 or the disconnection or short circuit of the transmission line 3 occurs, and the master unit 2
When no signal is received from the controller 14, the control unit 17
And outputs a dimming signal of a dimming output based on the set value. For example, the setting by the switch 14 is shown in FIG.
In the case of the lighting (ON, ON) shown in (1), a DC 10 V is output, and when the lighting is OFF (ON, OFF), 0 V is output. When the current status is maintained (OFF, ON) or (OFF, OFF), the lighting is performed as it is. Outputs a level (DC 0 to 10 V).

As described above, in the first embodiment,
Connecting the base unit 2 and the dimming signal terminal 4 via the transmission line 3;
When the dimming data signal is transmitted from the base unit 2 to the dimming signal terminal 4, a DC dimming signal based on the dimming data signal is output from the dimming signal terminal 4 and supplied to the dimmer 5. Is done. The dimmer 5 performs dimming control of the lamp 6 based on the dimming signal by, for example, phase control. Then, in the dimming signal terminal 4, when a signal from the master unit 2 does not come due to failure of the master unit 2 or disconnection or short circuit of the transmission line 3, the control unit 17 adjusts the dimming output based on the set value of the switch 14. Control to output optical signals.

In this way, even in a place where lighting is performed such as a stage such as a drama or the like, a lighting state when a failure of the master unit 2 or disconnection or short circuit of the transmission line 3 occurs is set in advance. Even if a failure occurs, the atmosphere of the place is not destroyed, and it is possible to provide a lighting control system that can be used more widely than before. Further, by providing the switch 14 for setting the dimming output so that the switch surface thereof is exposed from the case of the dimming signal terminal 4, the setting of the dimming output can be performed extremely easily (that is, the dimming output can be set very easily). It is not necessary to open the cover of the main body of the dimming signal terminal 4 for setting, so that setting is easy.) In the above embodiment, the dimming signal terminal 4 outputs the DC dimming signal based on the dimming data signal, but may output the PWM signal based on the dimming data signal. good.

(II) Second Embodiment FIG. 3 is a block diagram showing a configuration of a dimming signal terminal 40 of a lighting control system according to a second embodiment of the present invention.
In this figure, parts common to those in FIG. 2 described above are denoted by the same reference numerals. The dimming signal terminal 40 according to the second embodiment includes a memory 41 storing setting information for setting a lighting state of the lamp 6 when a failure such as a failure of the master unit 2 or disconnection or short circuit of the transmission line 3 occurs. Have this memory 4
The control unit 17 reads out the setting information stored in No. 1. For example, if the stored setting information is 2-bit data and (1, 1) is lit, D
If 10 V and (1, 0) are turned off from the / A conversion unit 12, 0 V, and if (0, 1) or (0, 0) is maintained as it is, the lighting level (0 to 10 V) remains unchanged. Is output. As the memory 41, it is necessary to write setting information in advance, and therefore, a nonvolatile memory such as a flash memory is preferable.

(III) Third Embodiment FIG. 4 is a block diagram showing a configuration of a dimming signal terminal 4 of a lighting control system according to a third embodiment of the present invention. In this figure, parts common to those in FIG. 3 described above are denoted by the same reference numerals. The dimming signal terminal 40 according to the third embodiment has an external setting device 60 for writing setting information from the outside to the memory 41, and an external setting device interface 51 for connecting the external setting device 60. I have.
The external setting device 60 also sets the address of the dimming signal terminal 50. Of course, this address is written to the memory 41. As the memory 41, a nonvolatile memory is preferable because it is necessary to hold the written / erased (erased for updating) setting information. The writing of the setting information to the memory 41 is performed by the external setting device 6.
Regardless of 0, it may be performed by the base unit 2 at the beginning of use. In this case, the base unit 2 is provided with a setting information writing unit (setting information writing unit) 70 for writing setting information.

[0023]

According to the first aspect of the present invention, when the transmission signal detection unit cannot detect a signal from the master unit due to a failure of the master unit or disconnection or short circuit of the transmission line, the transmission signal disconnection timing is adjusted. Since the optical signal output means outputs a dimming signal of the dimming output based on the setting of the dimming output setting means, the master unit is set in advance according to the place to be used, such as a place where lighting is directed such as a stage such as a theater. By setting the lighting condition in the event of a failure or transmission line disconnection or short circuit, even if these failures occur, the atmosphere of the place will not be destroyed, and it will be used more than before. It is possible to provide a lighting control system having a wide range.

According to the second aspect of the present invention, since the setting of the dimming output can be performed by operating the switch, the setting of the dimming output can be easily performed.

According to the third aspect of the present invention, the setting information for setting the dimming output is stored in the memory for storing the address to be allocated to the dimming signal terminal, so that the memory can be used more efficiently. And cost reduction can be achieved.

According to the fourth aspect of the present invention, since the setting information for setting the dimming output is written from the master unit to the memory, the setting of the dimming output can be easily performed (that is, the dimming output can be easily set).
It is not necessary to open the cover of the main body of the dimming signal terminal, so that setting is easy.)

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a first embodiment of a lighting control system according to the present invention.

FIG. 2 is a block diagram illustrating a configuration of a dimming signal terminal of the lighting control system according to the first embodiment.

FIG. 3 is a block diagram illustrating a configuration of a dimming signal terminal according to a second embodiment of the lighting control system according to the present invention.

FIG. 4 is a block diagram illustrating a configuration of a dimming signal terminal according to a third embodiment of the lighting control system according to the present invention.

[Description of Signs] 1 Lighting control system 2 Base unit 3 Transmission line 4 Dimming signal terminal 5 Dimmer 6 Lamp 7 Remote control transformer 8 Up / Down switch 10 DC power supply 11 Reference voltage unit 12 D / A conversion unit 13 Address setting Unit 14 switch 15 transmission / reception unit 16 transmission signal detection unit 17 control unit 40 dimming signal terminal 41 memory 50 dimming signal terminal 51 external setting unit interface 60 external setting unit 70 setting information writing unit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3K073 AA75 AA92 AB01 CA01 CB04 CC02 CC22 CE09 CE12 CG09 CG42 CH21 CH31 CJ01 CJ02 CJ03

Claims (4)

[Claims] 1. A master unit for outputting a dimming data signal for dimming control of a lighting load; and a dimming data signal output from the master unit is converted into a PWM or DC dimming signal and output. A dimming signal terminal; a dimmer for controlling dimming of a lighting load by a dimming signal output from the dimming signal terminal;
A lighting control system comprising: a dimming signal terminal; a transmission signal detecting unit configured to detect a signal output from the master unit; a dimming output setting unit configured to set a dimming output; A transmission signal disconnection dimming signal output that outputs a dimming signal of a dimming output based on the setting of the dimming output setting unit when the transmission signal detecting unit detects that there is no signal from the master unit. Means; and a lighting control system. 2. The dimming output setting means is a switch which can be manually set, and the dimming signal output means at the time of transmission signal interruption outputs a dimming signal of a dimming output based on the setting of the switch. The lighting control system according to claim 1, wherein: 3. The dimming output setting means is a memory,
The memory further comprises a setting unit for writing setting information for setting a dimming output and writing an address assigned to the dimming signal terminal, wherein the transmission signal disconnection dimming signal output means is provided in the memory. The illumination control system according to claim 1, wherein a dimming signal of a dimming output based on the written setting information is output. 4. The dimming output setting means is a memory,
2. The illumination control system according to claim 1, wherein the master unit includes setting information writing means for writing setting information for setting a dimming output in the memory.