JP2000277273A - Illumination control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an illumination control device for preventing the configuration from becoming complicated, and making difficult the generation of sense of incompatibility. SOLUTION: A luminaire 1a of an illumination control device has a human sensor 3a to sense existence of a human body, and a lighting device 13 generates a set illuminance by controlling the lightness of a fluorescent lamp 2a, in conformity with a PWM signal given by an illuminance sensor 5. When the luminaire 1a does not sense any human body, signal from the illuminance sensor 5 is not fed, and a PWM signal for the darkened or extinguished condition of the preset fluorescent lamp is emitted, and the lighting device 13 darkens or extinguishes the fluorescent lamp 2a in conformity with the PWM signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a lighting control device having a human sensor and an illuminance sensor.

[0002]

2. Description of the Related Art Conventionally, a lighting control device of this type has a lighting sensor connected to a human sensor and an illuminance sensor, respectively. Dimming or extinguishing the lamp of the lighting equipment based on the human sensor, and if the person is detected by the human sensor while in the seat, the illuminance sensor detects The brightness of the lamp of the lighting fixture is dimmed according to the illuminance, and energy is saved by utilizing daylight.

However, when a plurality of lighting fixtures are provided, such as in an office, a human sensor and an illuminance sensor must be provided for each of the lighting fixtures, which complicates the configuration. At the same time, the cost rises.

As another lighting control device, a human sensor is connected to each lighting fixture, one illuminance sensor is connected to a plurality of lighting fixtures, and a lamp of the lighting fixture is connected by the human sensor. Power on and off, turn off the lamp of the lighting equipment if no human sensor is detected, and turn off the lighting equipment based on the illuminance sensor if a human sensor is detected. Dimming the lamp to the set illuminance.

However, in such a configuration in which the lamp of the lighting fixture is turned on and off by the human sensor, when the human sensor does not detect a person, the lamp of the lighting fixture is only turned off and not dimmed. In addition, the area around the part where the lamp of the luminaire is extinguished feels dark and gives a sense of incongruity.

[0006]

As described above, the configuration in which a human sensor and an illuminance sensor are provided in correspondence with each lighting fixture is complicated, and the lamp of the lighting fixture is simply changed according to the human sensor. The on / off configuration has a problem that if no human is detected by the human sensor, the surroundings become dark and a sense of discomfort occurs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide an illumination control device capable of preventing a configuration from becoming complicated and performing a control that does not easily cause a sense of incongruity.

[0008]

According to a first aspect of the present invention, there is provided a lighting control apparatus, comprising: a human sensor for detecting the presence or absence of a person; and a lamp of a lighting fixture corresponding to the presence or absence of a person detected by the human sensor. Human sensor control means for outputting a signal for setting different brightness; an illuminance sensor for detecting ambient brightness; and a signal for setting the illuminance of the lighting fixture based on the ambient brightness detected by the illuminance sensor. An illuminance sensor control means for outputting; at least a signal from the occupancy sensor control means is preferentially input when the presence sensor detects that no person is present, and the brightness of the lamp of the lighting fixture is preset. Lamp control means for dimming the lamp of the lighting fixture to the set illuminance in accordance with a signal from the illuminance sensor control means when the presence sensor detects the presence of a person in a dimmed state. People with sensors In a state that is not issued and outputs a signal to turn on the lamp of the luminaire in a state of being at least dim it is preset by the human sensor control means,
In the lamp control means, regardless of the signal from the illuminance sensor control means, the lamp of the lighting fixture is turned on at least in a state of dimming based on the signal from the human sensor, and in the state where a human is detected by the human sensor. A signal for setting the illuminance of the lamp of the luminaire to the set illuminance is output, and the lamp control unit controls the illuminance of the lamp of the luminaire based on the signal from the illuminance sensor control unit.

According to a second aspect of the present invention, there is provided a lighting control apparatus.
In the lighting control device described, at least the dimming state when the absence of a person is detected by the human sensor can be arbitrarily changed, and by arbitrarily changing the dimming state without a person, Unnecessarily brightening the illuminance of the lamp of the lighting equipment is unnecessary, and energy saving can be achieved.

A third aspect of the present invention provides a lighting control device.
Or the illumination control device according to 2, wherein the illuminance sensor includes:
It is provided corresponding to a plurality of lighting fixtures. Even if one illuminance sensor is provided for the plurality of lighting fixtures, even if the presence sensor detects that no person is present, the lamp of the lighting fixture is not used. Is turned on with a preset illuminance, so that the lighting is not turned off and the surroundings are not darkened.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a lighting control device according to the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing a lighting control device.
FIG. 2 is a block diagram showing a connection when the lighting control device is used.

As shown in FIG. 2, the lighting fixtures 1a, 1b, 1c,
1d has fluorescent lamps 2a, 2b, 2c, 2d and motion sensors 3a, 3b, 3c, 3d, respectively. These lighting fixtures 1a, 1b, 1c, 1d are connected to each other by a signal line 4, and an illuminance sensor 5 for detecting the illuminance of a zone illuminated by these lighting fixtures 1a, 1b, 1c, 1d is provided. The signal line 4 is connected via an illuminance sensor control device 6 as illuminance sensor control means.

As shown in FIG. 1, a motion sensor 3a of a lighting fixture 1a is connected to a motion sensor control device 11 as motion sensor control means and a lamp control device 12 as lamp control means, for example, an inverter or the like. The lighting device 13 is connected to a dimming terminal, a power supply terminal of the lighting device 13 is connected to a commercial AC power source e, and an output terminal of the lighting device 13 is connected to a fluorescent lamp 2a.
Is connected.

The human sensor 3a has an infrared pyroelectric sensor element 21, which is connected to an amplifier 22.

Further, the amplifier 22 of the motion sensor 3a is connected to a PWM generation control unit 23 of the motion sensor control device 11, and the PWM generation control unit 23 has a fluorescent lamp when there is no person.
Illumination switch 24 and timer 25 for setting the illumination of 2a
Is connected.

Further, a diode D1 and a diode D2 are connected to the PWM generation controller 23, and the diode D2
Is grounded through the base and emitter of the resistor R1 and the transistor Q1, a capacitor C1 is connected between the connection point of the diode D2 and the resistor R1 and the emitter of the transistor Q1, and the collector of the transistor Q1 is connected through the resistor R2. A power supply, a series circuit of a light-emitting diode LED1 and a resistor R3 is connected between the collector and the emitter of the transistor Q1, and a diode D1 and an emitter of the transistor Q1 are connected to a dimming terminal of the lighting device 13 and a diode.
D1 is connected to the illuminance sensor control device 6 and the other luminaires 1b, 1c, 1d via the phototransistor Q2.

The illuminance sensor 5 is a photodiode
The amplifier 31 is connected to Q3.

Further, the amplifier 31 of the illuminance sensor 5
The illuminance sensor control device 6 is connected to an inverting input terminal of a comparator 32, and a non-inverting input terminal of the comparator 32 is connected to a setting illuminance switch 33 for setting a setting illuminance. The lighting fixtures 1a, 1b, 1c, 1d are connected via a PWM generator 35.

Next, the operation of the above embodiment will be described.

First, in the absence state in which no person is detected by the human sensor 3a, an arbitrary brightness, in which the fluorescent lamp 2a is dimmed or turned off, is set by the setting illuminance switch 24, and the human sensor 3a detects the human. The brightness of the fluorescent lamp 2a in the detected presence state is set in advance by the setting illuminance switch 33.

The photodiode of the illuminance sensor 5
When the ambient illuminance is detected by Q3, the output of the photodiode Q3 is amplified by the amplifier 31, and the amplified output is compared with the voltage set by the set illuminance switch 33, and when the set illuminance is higher. That is, when the surroundings are dark, the on-duty of the PWM signal is reduced by the PWM generator 35. Conversely, when the set illuminance is lower, that is, when the surroundings are bright, the on-duty of the PWM signal is increased by the PWM generator 35, When the illuminance is equal to the set illuminance, the illuminance is output via the signal line 4 to each of the lighting fixtures 1a, 1b, 1c, 1d with the same on-duty. The lighting device 13 has an on-duty of 0%.
When the PWM signal is input, the fluorescent lamp 2a is turned on at a maximum of 100%, dimly lit with an on-duty of 80%, and turned off with a DC signal having an on-duty of 100%.

In the lighting fixtures 1a, 1b, 1c, and 1d in which a person is detected by the sensor element 21, the output of the sensor element 21 is amplified by the amplifier 22, and the PWM generation control unit 23 sets the on-duty to 0%. Output at L level. This PWM generation control unit
At 23, no base current is supplied to the base of the transistor Q1 due to the L level output, and the transistor Q1 maintains the off state, so that the light emitting diode LED1 emits light and the phototransistor Q2 turns on. In this state, the PWM signal from the illuminance sensor 5 flows to the phototransistor Q2, and the lighting device 13 switches the fluorescent lamp 2a according to the PWM signal from the illuminance sensor 5.
Control the brightness of the camera to the set illuminance, and use daylight to save power.

On the other hand, in the lighting fixtures 1a, 1b, 1c, and 1d in which no person is detected by the sensor element 21, the output of the sensor element 21 is amplified by the amplifier 22, and the fluorescent light set in advance by the PWM generation control unit 23. An output corresponding to the illuminance of the lamp 2a is performed.
For example, when the fluorescent lamp 2a is set to be turned off, the PWM generation controller 23 sets the on-duty to 1
A high level of 00% is output, a base current is supplied to the base of the transistor Q1 via the diode D2, the transistor Q1 is turned on, the light emitting diode LED1 is turned off, the phototransistor Q2 is turned off, and a signal from the illuminance sensor 5 is output. , The lighting device 13 turns off the fluorescent lamp 2a. When the fluorescent lamp 2a is set to be dimmed, for example, the PWM generation control unit 23 outputs a PWM signal corresponding to the illuminance of the dimming, charges the capacitor C1, and supplies the base current to the transistor Q1. When the transistor Q1 is on, the light emitting diode LED1 is turned off, the phototransistor Q2 is turned off, the signal from the illuminance sensor 5 is not input, and the lighting device is turned on based on the PWM signal from the PWM generation control unit 23. 13 is controlled so that the fluorescent lamp 2a is lit in a dimmed state.

As described above, when a person is not detected by the human sensor 3a, priority is given to the signal of the illuminance of the fluorescent lamp 2a which is set in advance in response to the absence of the person, and the illuminance sensor 5 Without the need to provide an illuminance sensor 5 for each lighting fixture 1a, 1b, 1c, 1d
In addition to the detection of the presence or absence of a person by the human sensor 3a, the dimming state can be set even when there is no person, so that it is possible to prevent an uncomfortable feeling that the surroundings are darkened by turning off the light.

[0026]

According to the lighting control device of the first aspect,
In a state where no person is detected by the human sensor, a signal for lighting the lamp of the luminaire in a state where the light is at least dimmed is preset by the human sensor control means, and the illuminance sensor control means is used in the lamp control means. Regardless of the signal from, the lighting of the lighting fixture is turned on at least in a state of dimming based on the signal from the human sensor, and the illuminance of the lamp of the lighting fixture is set when the human sensor is detected by the human sensor A signal for illuminance is output, and the lamp control means controls the illuminance of the lamp of the lighting fixture based on the signal from the illuminance sensor control means, so that the control can be appropriately performed without complicating the configuration.

According to the illumination control device of the second aspect, in addition to the illumination control device of the first aspect, at least the dimming state when the presence sensor detects that no person is present is arbitrarily variable. It is possible to arbitrarily change the dimming state where no people are present, so that the illuminance of the lamp of the lighting fixture is not unnecessarily brightened, and energy saving can be achieved.

According to the lighting control device of the third aspect, in addition to the lighting control device of the first or second aspect, since the illuminance sensors are provided corresponding to the plurality of lighting devices, the illumination control device is provided for the plurality of lighting devices. On the other hand, even when one illuminance sensor is provided, even if the presence sensor detects that no person is present, the lamp of the luminaire is turned off by turning on the lamp of the illuminator with a preset illuminance. It can be illuminated without darkening the surroundings.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a lighting control device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a connection when the illumination control device is used.

[Explanation of symbols]

 1a Lighting equipment 2a Fluorescent lamp 3a Human sensor 5 Illuminance sensor 6 Illuminance sensor controller as illuminance sensor controller 11 Human sensor controller as illuminance sensor controller 12 Lamp controller as lamp controller

Claims (3)

[Claims] A human sensor for detecting presence or absence of a human; and a human sensor control for outputting a signal for setting a lamp of a lighting fixture to a different brightness according to the presence or absence of a human detected by the human sensor. Means; an illuminance sensor for detecting ambient brightness; illuminance sensor control means for outputting a signal for setting the illuminance of the luminaire based on the ambient brightness detected by the illuminance sensor; When it is detected that there is no person, the signal from the human sensor control means is preferentially input to set the brightness of the lamp of the lighting fixture to at least a preset dimmed state, and there is a human using the human sensor. And a lamp control means for dimming a lamp of the lighting fixture to a set illuminance in accordance with a signal from the illuminance sensor control means when the illuminance is detected. 2. The illumination control device according to claim 1, wherein at least the dimming state when the presence sensor detects that no person is present can be arbitrarily changed. 3. The lighting control device according to claim 1, wherein the illuminance sensor is provided corresponding to a plurality of lighting fixtures.