JPH0660985A - Illumination control system - Google Patents

Abstract

PURPOSE:To provide an illumination control system by which wiring can be reduced in plural luminaires at low cost and the plural luminaires can be controlled easily in various lighting patterns. CONSTITUTION:A control part 1, plural luminaires 3-1-3-n connected in series to this control part l through a signal line 4 and an electric power supply part 2 to supply necessary electric power to these luminaires 3-1-3-n, are provided. Respective lighting signals of the plural luminaires 3-1-3-n are transferred as serial data from the control part 1 through the signal line 4, and lighting of the respective luminaires 3-1-3-n is controlled.

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 controlling lighting of a plurality of lighting fixtures installed for recognition or decoration on a street, a park, an entertainment facility, a wall, a passage, or the like.

[0002]

2. Description of the Related Art In a conventional lighting control system for controlling lighting of a plurality of lighting fixtures, a control line is connected to each lighting fixture from a common control device, and each lighting fixture is individually connected via these control lines. I'm trying to control.

[0003]

However, in the above-mentioned conventional lighting control system, there is a problem that the wiring becomes enormous as the number of lighting fixtures increases and the cost increases, and each lighting fixture is individually To control
There is a problem in that the control becomes complicated, which simplifies the lighting pattern.

The present invention has been made by paying attention to such a conventional problem. The wiring for a plurality of lighting fixtures can be reduced and the cost can be reduced, and the plurality of lighting fixtures can be easily controlled by various lighting patterns. It is an object of the present invention to provide a lighting control system that is appropriately configured so as to be capable.

[0005]

In order to achieve the above object, according to the present invention, a control unit, a plurality of lighting fixtures serially connected to the control unit via signal lines, and a power supply required for these lighting fixtures. The control unit controls the lighting of each lighting fixture by transmitting the lighting signal of each of the plurality of lighting fixtures as serial data from the control unit via the signal line.

[0006]

In the above structure, when the lighting signal for each lighting fixture is transferred as serial data from the control section through the signal line, each lighting fixture receives its own lighting signal,
Lighting control will be performed based on this.

[0007]

1 is a block diagram showing the configuration of an embodiment of the present invention. This lighting control system includes a control unit 1,
The power supply unit 2 and a plurality of lighting fixtures 3-1 to 3-2 each having a low-voltage driving light emitter, such as a cold cathode tube, a light emitting diode (LED), an incandescent bulb, and electroluminescence (EL).・, 3-n. These control unit 1, power supply unit 2 and a plurality of lighting fixtures 3-1 to 3-n
Is serially connected by a pair of signal lines 4, and
A required voltage is supplied in parallel from the power supply unit 2 to each of the lighting fixtures 3-1 to 3-n. If there are a large number of lighting fixtures and the capacity of the power supply and the thickness of the cable are limited, a plurality of power supply units are provided to share the power supply.

In this embodiment, the control unit 1 reads a lighting pattern from a memory card, generates a lighting signal for individually controlling each lighting fixture 3-1 to 3-n based on the lighting pattern, and generates the lighting signal. Is supplied to the power supply unit 2 through the signal line 4 as serial data. The power supply unit 2 generates a DC voltage for driving the light emitters of the respective lighting fixtures 3-1 to 3-n from the AC voltage, and uses this to generate the DC voltage.
3-n is supplied in parallel, a lighting signal from the control unit 1 is passed through a buffer, and each lighting fixture 3 is connected by a signal line 4.
Serial supply to -1 to 3-n. Also, each lighting fixture 3
In -1 to 3-n, it receives its own lighting signal,
Lighting of the light emitter is controlled based on the lighting signal. Hereinafter, the configuration and operation of each unit will be described in more detail.

FIG. 2 is a block diagram showing the configuration of the control unit 1. The control unit 1 is provided with a microcomputer 5, a card reader 6, a calendar timer 7, a transfer clock generator 8, a data memory 9, a parallel / serial converter 10 and a buffer 11. The lighting pattern previously written in the memory card is read by the card reader 6, the read lighting pattern is processed by the microcomputer 5, and the lighting signal of each of the lighting fixtures 3-1 to 3-n is stored in the data memory 9. Store.

The lighting signal corresponding to each of the lighting fixtures 3-1 to 3-n stored in the data memory 9 is synchronized with a read clock from the microcomputer 5 at a constant time interval, and a transfer clock generator. 8 is read in parallel by the transfer clock from 8 and the read lighting signal is converted into serial data by the parallel / serial converter 10 and the buffer 11 and the data latch signal generated by the microcomputer 5 are used as the lighting signal. It is supplied to the power supply unit 2 via the signal line 4. The calendar timer 7 controls the year, month, day and time of the lighting signal.

FIG. 3 is a block diagram showing the configuration of the power supply unit 2. The power supply unit 2 is provided with a switching power supply circuit 13 and a buffer 14, and by the switching power supply circuit 13, a DC low voltage (in this embodiment, 1
2 volt) is generated and supplied to each of the lighting fixtures 3-1 to 3-n in parallel, and a lighting signal from the control unit 1 is supplied to the buffer 14
And is serially supplied to each lighting fixture 3-1 to 3-n. Note that the buffer 14 is provided with a terminal for supplying a lighting signal to the power supply unit at the next stage in consideration of the case where a plurality of power supply units are provided.

FIG. 4 is a block diagram showing one construction of the lighting equipment. Each lighting fixture includes a buffer 16, a shift register 17, a digital-analog (D / A) converter 18, a comparator 19, a triangular wave generation circuit 20, a switching circuit 21, an inverter 22 and a light emitter (a cold cathode tube in this embodiment). Have 23. The lighting signal supplied from the control unit 1 via the power supply unit 2 is supplied to the shift register 17 via the buffer 16, where the lighting signal is converted into parallel data and supplied to the D / A converter 18. The lighting signal serially output from the shift register 17 is supplied to the lighting equipment of the next stage via the buffer 16.

The D / A converter 18 converts its own lighting signal converted into parallel data by the shift register 17 into an analog signal and supplies the analog signal to one input terminal of the comparator 18. The triangular wave signal output from the triangular wave generation circuit 20 is supplied to the other input terminal of the comparator 18, where both input signals are compared and a signal whose pulse width changes according to the output of the D / A converter 18 is supplied. obtain.
The output of the comparator 18 is the switching circuit 21.
The DC voltage from the power supply unit 2 is on / off controlled based on the output of the comparator 18 and supplied to the inverter 22. In the inverter 22, the direct-current voltage controlled to be turned on / off is boosted to a voltage at which the cold cathode tube 23 can be turned on, and the lighting of the cold cathode tube 23 is controlled.

As described above, in this embodiment, since the signal line 4 from the control unit 1 is serially connected to the plurality of lighting fixtures 3-1 to 3-n for individual control, wiring is reduced. Yes, and therefore cheaper. In addition, the lighting pattern is read from the memory card and a plurality of lighting devices 3-1
Since the lighting of 3 to 3-n is controlled, the control can be simplified and the lighting pattern can be easily changed. Therefore, it is possible to easily control the plurality of lighting devices with various lighting patterns.

It should be noted that the present invention is not limited to the above-described embodiments, but various modifications and changes can be made. For example, in the above-described embodiment, each lighting fixture is provided with one light emitting body, but a plurality of, for example, three light emitting bodies of red, green, and blue are provided, and these are controlled by a lighting signal from the control unit. It is also possible to perform light control of the hue.

[0016]

As described above, according to the present invention, the control unit and the plurality of lighting fixtures are serially connected via the signal line, and the plurality of lighting fixtures from the control unit are connected via the signal line. Since the lighting signal for each is transferred as serial data to control the lighting of each lighting fixture, wiring can be reduced and the cost can be reduced, and multiple lighting fixtures can be easily controlled by various lighting patterns. You can

[Brief description of drawings]

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

FIG. 2 is a block diagram showing a configuration of an example of a control unit shown in FIG.

FIG. 3 is a block diagram showing a configuration of an example of a power supply unit.

FIG. 4 is a block diagram showing a configuration of an example of one lighting fixture.

[Explanation of symbols]

 1 Control Unit 2 Power Supply Unit 3-1 to 3-n Lighting Equipment 4 Signal Line 5 Microcomputer 6 Card Reader 7 Calendar Timer 8 Transfer Clock Generator 9 Data Memory 10 Parallel / Serial Converter 11 Buffer 13 Switching Power Supply Circuit 14 Buffer 16 buffer 17 shift register 18 D / A converter 19 comparator 20 triangular wave generating circuit 21 switching circuit 22 inverter 23 light emitter

Claims (5)

[Claims] 1. A control unit, a plurality of lighting fixtures serially connected to the control unit via a signal line, and a power supply unit that supplies required power to the lighting fixtures. A lighting control system, wherein the lighting signal of each of the plurality of lighting fixtures is transferred as serial data via a signal line to control the lighting of each lighting fixture. 2. The lighting control system according to claim 1, wherein each of the lighting fixtures includes a light-emitting body for driving at a low voltage. 3. The lighting control system according to claim 1, wherein a plurality of the power supply units are provided, and the power supply units share the power supplies of the plurality of lighting fixtures. 4. The lighting patterns of the plurality of lighting fixtures are written in a recording medium, and the control unit is provided with a reading unit of the recording medium, and the plurality of lighting fixtures are based on the lighting patterns read by the reading unit. The lighting control system according to claim 1, wherein the lighting control system is configured to generate a lighting signal for each of the above. 5. The illumination control system according to claim 1, wherein the recording medium comprises a memory card in which the recorded contents of the lighting pattern can be changed.