JPH02177295A - Dimmer control system - Google Patents

Abstract

PURPOSE:To make a device compact by providing a dimmer signal power supply unit for supplying dimmer signal power on the dimmer terminal of the system in the title separate from other terminals, and outputting a dimmer signal with the dimmer signal power supply unit via the switching of a dimmer signal line with each dimmer terminal. CONSTITUTION:Dimmer terminal switches 3 turn on and off a dimmer signal line 4, using a dimmer control signal transmitted from CPU 1 via a transmission line 2, thereby outputting a dimmer signal having varied duty. That is, the CPU 21 of the terminals 3 outputs a pulse signal corresponding to the dimmer control signal transmitted from the CPU 1 and the transistor TR31 of a dimmer circuit 30 is turned on, thereby lighting LED 32 and enabling a photo-transistor TR33 connected to the dimmer signal line 4 to receive light from the LED 32. In this case, the signal line 4 is being supplied with dimmer signal power from a dimmer signal power supply unit 6 provided in a dimmer lighting apparatus 5. When LED 46 lights and a photo-transistor TR45 receives the light, the triode AC switch of a lighting circuit is turned on with a continuity angle in accordance with the dimmer signal, thereby dimming and lighting a lamp.

Description

Detailed Description of the Invention (Objective of the Invention) (Industrial Application Field) The present invention relates to a dimming control system in which a central processing unit and a plurality of dimming terminals are connected via a transmission line, Sends a transmission signal including a dimming control signal from the device to the dimming terminal,
This invention relates to a device that performs dimming i-control on a dimming lighting fixture connected to this dimming terminal.

(Prior Art) Conventionally, a dimming terminal device switches a signal line and outputs a signal in response to a dimming control signal sent from a central processing unit 1, thereby controlling a dimming lighting fixture. Control systems are known. The conventional dimming fl11t[l system employs a structure in which a dimming signal layer m device for supplying power for the associated light signal to the dimming terminal device is provided.

(Problems to be Solved by the Invention) In the above-mentioned conventional dimming & 11111 system, since the dimming terminal device is provided with a power supply device for power for the associated light signal, a short circuit detection circuit that protects this power supply device and this power source As a result, the dimming terminal itself becomes large in size, and the circuit configuration of the dimming terminal becomes complicated.

The present invention has been made in view of the above-mentioned problems, and the first and second inventions provide a power supply device for power for the optical signal separately from the dimming terminal device, and protect the power supply device in the dimming terminal device. The first aspect of the present invention also eliminates the need to incorporate a short-circuit detection circuit to reduce the size of the dimming terminal, and furthermore, the first invention further provides a power supply device for controlling the power of the dimming signal to a plurality of dimming terminals. The purpose of the present invention is to provide a dimming control system that can supply the following information and reduce the system cost.

[Structure of the invention]

(Means for Solving the Problems) The dimming control system of the first invention includes a central processing unit that sends out a transmission signal including a dimming Il+l signal, and a central processing unit that is connected to the central processing unit by a transmission line to control the dimming. It comprises a plurality of dimming terminals each outputting a dimming signal in response to a signal, and dimming lighting fixtures each connected to the dimming terminal,
Said central office Pl! In a dimming control system in which each of the dimming terminals outputs a dimming signal in response to a dimming control signal sent from a neck strap and controls the dimming of the dimming lighting equipment, the dimming terminal is separately configured to The dimming terminal device is provided with a dimming signal power supply device that supplies power for the associated dimming signal, and each of the dimming terminal devices switches the dimming signal line to generate a dimming signal using the power of the dimming signal power supply device. It is characterized by output.

The dimming control system of the second invention includes a central processing unit that sends out a transmission signal including a dimming υItll signal, and a central processing unit that is connected to the central processing unit by a transmission line and transmits a dimming signal in accordance with the dimming control signal. It is equipped with a plurality of output dimming terminals and dimming lighting fixtures respectively connected to the dimming terminals, and each of the dimming terminals is configured to control the dimming in response to a dimming control signal sent from the central processing unit. In the dimming υItll system that outputs a dimming signal and controls the dimming of the dimming lighting equipment, a dimming signal power supply device that supplies power for the dimming signal of the terminal device is provided in the dimming lighting equipment, and each of the dimming lighting equipment The dimming terminal device is characterized in that it outputs a dimming signal based on the power of the dimming signal power supply bag δ by switching the dimming signal line.

(Function) In the dimming υ1111 system of the first invention, when a transmission signal including a dimming 1III[l signal is sent from a central processing unit, a dimming terminal connected to this central processing unit by a transmission line is supplied with power for the relevant light signal from the light control signal 'Ii source device, switches the light control signal line according to the light control signal, and outputs the light control signal with variable duty to each light control lighting fixture. However, this dimmable lighting fixture is dimmed I1160.

In the dimming υ1@ system of the second invention, when a transmission signal including the dimming v111Il signal is sent from the central processing unit, the dimming terminal device connected to the central processing unit by a transmission line transmits the dimming Power for the dimming signal is supplied from the dimming signal power supply device installed in the lighting fixture, and the dimming control system switches the dimming signal line to output a dimming signal with variable duty to each dimming lighting fixture. However, this dimming lighting equipment is dimming controlled.

(Embodiment) The configuration of an embodiment of the present invention will be described with reference to FIGS. 1 to 5.

FIG. 1 shows a schematic configuration of a dimming tilltlj system, which includes a central processing unit 1, a plurality of dimming terminals 3 connected to this central processing unit 1 via a pair of transmission lines 2, and A dimming lighting fixture 5 connected to each dimming terminal device 3 by a dimming signal line 4 and a dimming signal power supply device connected to the front two dimming terminal devices 3! ! ! It consists of 6.

The central processing unit 1, as shown in FIG. The signal processing circuit 11 is composed of a differential circuit 15 that generates a differential output every time the output voltage of the current detection circuit 12 changes, and a flip-flop circuit 19 that inverts based on the differential output.゛-board,
A voltage signal transmission signal including a dimming signal is created based on data from a switch or a sensor, and this transmission signal is sent to the drive circuit 13 via a flip-flop circuit 19.
and sent out to transmission 82. Further, the current detection circuit 12 is connected to the central processing '! through a transmission 12. ! A neck 1
The current flowing between the terminal 3 and the dimming terminal 3 is converted into voltage.

Further, the drive circuit 13 is a circuit that drives the transmission line 2 with a bipolar signal corresponding to an input signal, and the flip-flop circuit 19 and the drive circuit 13 constitute a transmission circuit 20. Further, the differentiation circuit 15 is connected to the current detection circuit 1.
By differentiating the output voltage of 2, a change in the N-flow mode signal sent from the dimming terminal 3 is detected. Further, the flip-flop circuit 19 has its voltage output rising at the rising edge of the voltage signal outputted from the signal processing circuit 11 and falling at the falling edge thereof, and triggers the differential output of the differentiating circuit 15 to perform a steering operation and output the output. Invert. In other words, this flip-flop circuit 1
9 is 1. A voltage that changes according to changes in the output of the signal processing circuit 11 is sent to the drive circuit 13, and when the output of the signal processing circuit 11 is constant, a voltage that is inverted every time the current mode signal detected by the current detection circuit 12 changes is sent to the drive circuit 13. The signal is sent to the drive circuit 13.

The dimming terminal 3 has a signal processing circuit 21, a receiving circuit 22, and a transmitting circuit 23, as shown in FIG. They are connected to each other by signals I1I4. The receiving circuit 22 includes a central processing unit'? Transmission 1 from 11!
Receives the voltage mode signal sent to 2. Further, the signal processing circuit 21 operates according to a predetermined sequence, and the dimming tI included in the voltage mode signal received by the receiving circuit 22 is processed according to a predetermined sequence.
The circuit 23 receives the I1511 signal, supplies a dimming signal based on the dimming control signal, etc. to the dimming lighting fixture 5 from the signal line 4, detects the monitoring signal of the dimming lighting fixture 5, and transmits the monitoring data. Output to. This transmitting circuit 23 transmits data to the transmission line 2 according to the monitoring data output from the signal processing circuit 21.
Connect the wi resistor between the lines of L? ! The data is sent to the transmission line 2 as a current mode signal.

Further, the physical configuration of the dimming terminal 3 will be explained with reference to FIG. 4.

The signal processing device F21 includes a microprocessor (CP
U), and this dimming terminal device 3 includes a zero-cross signal receiving circuit 24, a self-address setting circuit 25, a capacitor 26 for resetting the signal processing circuit 21,
It has a diode bridge circuit 27.

and the receiving circuit 22 generates a voltage signal depending on whether the voltage mode of the transmission 1i12 is 0'' or 1'',
The signal is supplied to the central signal circuit 21.

Further, the transmission circuit 23 is supplied with a transmission signal from the dimming terminal 3 created by the central processing circuit 21 to the central processing unit 1, and only when this transmission signal is "1", there is a resistance between the transmission lines 2. Connect 28. At this time, the resistor 28 becomes a current sink, and the current flowing through the transmission line 2 changes depending on the current flowing through the resistor 28, and is detected by the current detection circuit 21 of the central processing unit 1, so that the current flows from the dimming terminal 3 to the central processing unit 1. A current mode signal transmission is performed to.

The line voltage of the transmission line 2 is at the center! The voltage at the DC end of the diode bridge 21 becomes "0" only when the zero-cross signal is sent from the illumination circuit 8 and 1, and the voltage at the DC end of the diode bridge 21 becomes "0" only when the zero-cross signal is sent.

Furthermore, when the output of the zero-cross signal receiving circuit 24 becomes 0, the central processing circuit 21 detects each as a zero-cross signal. Then, every half cycle of the AC power supply, a voltage pulse is created with a phase angle based on this zero-crossing signal and the dimming control signal transmitted from the central processing unit 1, and this pulse is used to generate the dimming direction v! By switching i30, a dimming signal with variable duty is created. This dimming circuit 30 includes a transistor 31 whose base is connected to the output terminal of the central processing circuit 21, a light emitting diode 32 connected to the collector of this transistor 31, and a phototransistor 33 that receives light emitted from this light emitting diode 32. A transistor 34 is connected to the emitter of the phototransistor 33, and an output light emitting diode 46 is connected between the collector of the transistor 34 and the collector of the phototransistor 33 using a dimming signal JIi4. and the dimming signal power supply device between the emitter of the transistor 34! ! 6
is connected.

Further, the dimming signal power supply device 6 is connected to the dimming circuit 30 of the terminal device 3.
This is a power supply device that supplies power for the optical signal belonging to
is connected, and this dimming signal power supply device 6 is connected to an AC power supply 1i1.
a rectifier circuit 38 connected to 7 via a transformer 37;
It is comprised of a constant voltage circuit 39 connected to this rectifier circuit 38 and a short circuit detection circuit 40. When the voltage at the output end of the dimming signal power supply unit N6 connected to the dimming terminal 3 rises due to a short-circuit failure, the capacitor 42 of the integrating circuit 41 of the short-circuit detection circuit 40 is intermittently discharged, resulting in a constant voltage. The transistor 44 is repeatedly turned off and on intermittently by the voltage set by the thyristor 43 of the circuit 39, thereby protecting the dimming signal power supply device 6.

Further, the dimming lighting fixture 5 has a well-known lighting circuit (not shown) connected to the power supply line 7, and includes a light emitting diode 46 connected to the dimming signal line 4, and a photodiode that receives the light emitted from the light emitting diode 46. A transistor 45 and a triac (not shown) which is turned on at a conduction angle specified by a dimming signal by the phototransistor 45 are provided, and a lamp connected to a lighting circuit (not shown) is dimmed and lit by this triac.

Next, the operation of this embodiment will be explained.

Central processing unit! The dimming terminal device 3 outputs a dimming signal with variable duty by switching the dimming signal line 4 in response to the dimming control signal transmitted from the dimming control signal 11 through the transmission line 2. That is, the central processing circuit 21 of the dimming terminal 3 outputs pulses corresponding to the dimming t and l1tlD signals transmitted from the central processing unit 1, and the transistor 31 of the dimming circuit 30
conducts, the light emitting diode 32 emits light, and the dimming signal @I!
A phototransistor 33 connected to J4 receives light emitted from the light emitting diode 32. At this time, dimming signal 1
A constant voltage power supply is supplied to it4 from the dimming signal power supply device 6, and when the output light emitting diode 46 emits light and the phototransistor 45 of the dimming lighting fixture 5 receives light, the triac of the lighting circuit operates according to the dimming signal. It turns on at a specified conduction angle and dims and lights up a lamp (not shown).

In this embodiment, the dimming terminal'! There is no need to incorporate a power supply device for dimming signals and a short-circuit detection circuit to protect this power supply device in A3, and the output transistor 31 of the dimming terminal device 3 can be made small, and the dimming terminal device 3 itself can be made small. . Further, a plurality of dimming terminal devices 3 are connected to the dimming signal power supply device 6, and -
Power for dimming signals can be supplied from each dimming power supply device 6 to a plurality of dimming terminal devices 3.

Next, the structure of another embodiment will be explained with reference to FIGS. 6 and 7.

This embodiment has a configuration in which a dimming signal TRS device F6 is provided in a dimming lighting fixture 5, and in the configuration shown in FIG. The phototransistor 33 that receives the light is connected to the dimming signal line 4.
The phototransistor 33 is connected to the phototransistor 33, the transistor 34 is connected to the emitter of the phototransistor 33, and the output light emitting diode 46 is connected between the collector of the transistor 34 and the collector of the phototransistor 33 via the dimming signal line 4. A dimming signal power supply device 6 provided in the dimming lighting fixture 5 is connected between the collector and emitter of the phototransistor 33 and the collector and emitter of the transistor 34. . This dimming signal power supply device 6 is connected to a power supply line 7. In addition, the dimming lighting fixture 5 is
a light emitting diode 46 having a well-known lighting circuit (not shown) connected to the line 7 and connected to the dimming signal 114;
A phototransistor 45 that receives light emitted from the light emitting diode 4G, and a triac that is turned on at a specified conduction angle according to a dimming signal by the phototransistor 45 are provided, and the lamp connected to a lighting circuit (not shown) is dimmed by this triac. It will be lit.

In the configuration of this embodiment, transmission from the central processing unit 1! ! 2
The dimming terminal 3 uses the dimming lIi′m signal transmitted through the
outputs a dimming signal whose duty is varied by switching the dimming signal line 4.

That is, the central processing circuit 30 of the dimming terminal 3 outputs a pulse according to the dimming control signal transmitted from the central processing unit 1, the transistor 31 of the dimming circuit 30 becomes conductive, and the light emitting diode 32 emits light. , a phototransistor 33 connected to the dimming signal line 4 receives light emitted from the light emitting diode 32. At this time, the dimming signal power is supplied to the dimming signal line 4 from the dimming signal power supply device 6 provided in the dimming lighting fixture 5, and the output light emitting diode 46 emits light, causing the photodiode of the dimming lighting fixture 5 to emit light. When the transistor 45 receives light, the triac of the lighting circuit turns on at a specified conduction angle in accordance with the dimming signal, and dims and lights the lamp (not shown).

In this embodiment, there is no need to incorporate an electric device for dimming signals and a short-circuit detection circuit to protect this power supply device into the dimming terminal 3, and the output transistor 31 of the dimming terminal 3 can be made small. The dimming terminal 3 itself can be made smaller.

In this embodiment, the light is controlled by the phase υ+m method using a try-hook, but the pulse width control method is used, that is, after converting the duty ratio control signal to the voltage level, for example, the inverter control is performed. Light control may also be used.

〔Effect of the invention"〕

According to the invention, the dimming υ1 sent from the central processing unit
1m! In a dimming control system in which each dimming terminal outputs a dimming signal in response to a signal to control the dimming of the dimming lighting equipment,
Since a dimming signal power supply device is provided separately from the dimming terminal device to supply power for the associated light signal to this dimming terminal device, there is no need to provide a dimming signal power supply device to the dimming terminal device. There is no need to incorporate a short-circuit detection circuit to protect the power supply device for the dimming signal into the dimming terminal, the dimming signal power can be supplied from the dimming signal line, and the output transistor of the dimming terminal can be made smaller. The dimming terminal itself can be made smaller. Further, in the first invention, a plurality of dimming terminals are connected to the - dimming signal power supply devices, and power for dimming signals is supplied from the - dimming power supply devices to the plurality of dimming terminals. This makes it possible to reduce system costs.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the overall configuration of a dimming tjlt11 system showing an embodiment of the present invention, FIG. 2 is a block diagram of the main parts of the same, FIG. 3 is a block diagram of the dimming terminal device, and FIG. The figure is a circuit diagram of the same as the above, Figure 5 is a block diagram of the central processing unit of the same as the above, Figure 6 is a block diagram of the main part of the dimming control signal showing another embodiment, and Figure 7 is a circuit diagram of a part of the same as the above. be. 1. Central processing@location, 2. Transmission line, 3. Dimming terminal device, 5. Dimming lighting equipment, 6. Dimming signal power supply device.

Claims (2)

[Claims] (1) A central processing unit that sends a transmission signal including a dimming control signal, and a plurality of dimming terminals that are connected to this central processing unit via transmission lines and each output a dimming signal in accordance with the dimming control signal. and dimming lighting fixtures respectively connected to the dimming terminals, and each of the dimming terminals outputs a dimming signal in response to a dimming control signal sent from the central processing unit, and controls the dimming. In a dimming control system for controlling the dimming of a light luminaire, a dimming signal power supply device is provided separately from the dimming terminal device to supply power for a dimming signal to the dimming terminal device, and each of the dimming terminal devices The dimming control system is characterized in that the dimming control system outputs a dimming signal based on the power of the dimming signal power supply device by switching a dimming signal line. (2) A central processing unit that sends out a transmission signal including a dimming control signal, and a plurality of dimming terminals that are connected to this central processing unit via transmission lines and each output a dimming signal in accordance with the dimming control signal. and dimming lighting fixtures respectively connected to the dimming terminals, and each of the dimming terminals outputs a dimming signal in response to a dimming control signal sent from the central processing unit, and controls the dimming. In the dimming control system for controlling the dimming of a light luminaire, the dimming signal power supply device for supplying power for the dimming signal to the dimming terminal device is provided in the dimming lighting fixture, and each of the dimming terminal devices A dimming control system that outputs a dimming signal based on the power of the dimming signal power supply device by switching an optical signal line.