JP2763681B2 - Heat ray sensor for lighting fixture control - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention detects the presence of a human body,
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting fixture control hot-wire sensor that issues a signal for automatically controlling on / off of a lighting fixture.

[0002]

2. Description of the Related Art Lighting equipment such as entrance lights and interior lights incorporating sensors that detect heat rays emitted from the human body to detect the presence or absence of the human body and automatically generate control signals for turning on and off are known. Various products have been commercialized. Generally, as shown in FIG. 3, a heat ray sensor of this type includes a heat ray detection unit 1 including a heat ray detection element that converts a heat ray from an object into an electric signal, and an amplification unit that amplifies the electric signal from the heat ray detection unit 1. A human body detector 4 comprising a comparator 2 and a comparator 3 which outputs a human body detection signal when the signal of the amplifier 2 is higher than the reference potential by comparing the signal of the amplifier 2 with a preset reference potential. An illuminance detection unit 5 that detects ambient brightness and outputs an illuminance detection signal when a brightness equal to or higher than a predetermined level is detected; and a lighting fixture based on output signals from the illuminance detection unit 5 and the human body detection unit 4. Is provided with a judgment unit 6 'for judging ON and OFF. Further, there is provided a lighting fixture control signal output section 7 for outputting an ON signal or an OFF signal to the lighting fixture according to the output of the judging section 6 '.

As shown in FIG. 4, when an illuminance detection signal is input, a judging unit 6 'judges that there is sufficient brightness and turns off the illumination of the lighting equipment. When the human body detection signal is inputted, the illumination is turned on for a certain period of time. If the human body detection signal is input again while the lighting is on, it is determined that the lighting is to be turned on again for a certain time from that point. Therefore, when the light is bright in the daytime, the light is not turned on even when the human body is present, and the light is turned on only at night or when the surroundings are dark and when it is really necessary to turn on the light that there is a human resource. become.

[0004]

However, the above-described determination method of the determination unit 6 'has a problem that the equipment cannot be confirmed at the time of installation. That is, when turning on the power switch of the lighting fixture at the time of installation, the sensor will be in the initial state,
Since the installation time zone is often in the daytime, the illuminance detection signal is input and the determination unit 6 works to turn off the illumination, so that the illumination is not turned on and the appliance cannot be checked.

In order to eliminate this problem, Japanese Utility Model Laid-Open No. 62-2
No. 5831, the illuminance detector 5
It has been proposed that a window be provided independently and a lighting device be confirmed by using a cover for closing the window. However, in this case, it is necessary to cover or remove the cover for confirmation, and if the cover is left down, there is a possibility that the lighting may remain on during the daytime when there is much disturbance.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and provides a lighting device which is always turned on when the power is turned on for the first time after installation, so that the lighting equipment can be checked even in the daytime. It is an object of the present invention to provide a lighting device controlling heat ray sensor.

[0007]

SUMMARY OF THE INVENTION The present invention comprises a power supply rise detection circuit for detecting a rise of a power supply, and a control means for forcibly turning on a lighting device for a predetermined time by an output of the power supply rise detection circuit. It is what constituted.

[0008]

The power supply rise detection circuit of the judgment unit detects the rise of the power supply, forcibly controls the lighting apparatus to be turned on by the control means for a certain time, and thereafter returns to the normal operation. The lighting equipment can be checked.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the configuration of the judging unit 6 is different from the conventional one, and the other configuration is the same as the conventional one. In the human body detection unit 4, the electric signal converted by the heat ray detection unit 1 is input to the comparison unit 3 through the amplification unit 2, and the comparison unit 3 compares the output of the amplification unit 2 with the reference potential and outputs the signal of the amplification unit 2. When it is large, the human body detection signal changes from L level to H level.

On the other hand, in the illuminance detecting section 5, the brightness signal converted into an electric signal by the photoelectric conversion element is inputted to the comparing section via the amplifying section. The illuminance detection signal changes from L level to H level. The determination unit 6 includes a timer 61, a power rising detection circuit 63 for detecting a rising of the power, and a signal processing unit 64.

The power supply rise detection circuit 63 changes from the L level to the H level at the same time as the rise of the power supply. At the rise, the timer 61 starts, and the output of the timer 61 becomes the H level for a preset time. The signal processing unit 64 receives the human body detection signal, the illuminance detection signal, and the signal of the timer 61 as input, and sends an H level signal to the illumination control signal output unit 7 when the lighting equipment is turned on.

FIG. 2 shows a flowchart of the signal processing section 64 of the judgment section 6, respectively. The operation will be described with reference to FIG.
First, when the signal of the timer 61 is at the H level, the output of the signal processing unit 64 is at the H level regardless of the state of the human body detection signal and the illuminance detection signal, and the lighting apparatus is turned on. Next, when the output of the timer 61 becomes L level, the illuminance detection signal has priority, and when the illuminance detection signal is H level, the output of the signal processing unit 64 becomes L level regardless of the state of the human body detection signal. When both the output of the timer 61 and the illuminance detection signal are at L level, the signal processing unit 64 outputs an H level signal according to the human body detection signal.

The timer 61 and the signal processing section 64 constitute control means. The lighting control signal output unit 7
Is to turn on and off the lighting for a predetermined time based on the output of the signal processing unit 64 as in the conventional case. Next, at the time of construction, when the installer turns on the power switch of the lighting base, if the wiring is securely made, the lighting is turned on for a certain period of time and the lighting equipment should be checked. Can be.

[0014]

As described above, according to the present invention, the judgment unit includes the power supply rise detection circuit for detecting the rise of the power supply, and the control means for forcibly turning on the lighting equipment for a certain period of time by the output of the power supply rise detection circuit. Since the rise of the power supply is detected by the power supply rise detection circuit of the determination unit, the lighting device is forcibly turned on by the control unit for a certain period of time, and thereafter, the operation returns to the normal operation. The lighting fixtures can be checked, so they always turn on when the power is turned on for the first time after installation of the lighting fixtures. Lighting can be checked and, except when the power is turned on, it returns to the normal state without any work, so there is no malfunction during the day due to forgetting to cover, as in the past. In which an effect that that.

[Brief description of the drawings]

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

FIG. 2 is a diagram showing a flowchart of the present invention.

FIG. 3 is a block diagram of a conventional example.

FIG. 4 is a diagram showing a flowchart of a conventional example.

[Explanation of symbols]

 4 Human body detection unit 5 Illuminance detection unit 6 Judgment unit 63 Power rising detection circuit 4 Human body detection unit 5 Illuminance detection unit 6 Judgment unit 63 Power startup detection circuit

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H05B 37/02

Claims (1)

(57) [Claims] 1. A human body detection unit that detects a change in a heat ray from a detection range and outputs a human body detection signal when the change exceeds a preset reference. An illuminance detection unit that outputs an illuminance detection signal when there is a signal; and a determination unit that receives a human body detection signal and an illuminance detection signal from the two detection units and determines whether the lighting apparatus is on or off according to the signals. In the lighting fixture control hot-wire sensor, the determination unit is configured by a power rising detection circuit for detecting a rising of a power supply, and a control unit for forcibly turning on the lighting equipment for a predetermined time by an output of the power rising detection circuit. A heat ray sensor for controlling lighting equipment.