JPS5894797A - Device for automatically firing illumination lamp - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic lighting device for illumination lights, and more particularly to a device for automatically turning on an entrance light when a visitor comes in at night, or setting the lighting when going up and down stairs at night.

A prior art system for automatically turning on and off an illumination lamp consists of an illumination lamp 1, an illuminance detection means 2, a human body detection means 3 and a control means 11, as shown in FIG. The illuminance detection means 2 detects the illuminance of the area that can be illuminated by the illumination lamp 1, and derives a high-level signal when the illuminance becomes less than a predetermined illuminance.

The pyroelectric sensor 31 provided in the human body detection means 3 is a sensor that utilizes the pyroelectric effect in which a charge is generated on the surface of an insulator when a certain Km degree change is applied to the insulator. Therefore, the human body detection means 3 detects whether a person enters or leaves the area, and derives a high level (No. 4) when a person enters or leaves the area. AND game) 4,) Relay 8 having transistor 5, relay fill 6 and relay switch 7, AC power $9,
It consists of a timer 10 and a resistor 25. Timer 10 is
This is a so-called on-timer that derives a high-level signal for a predetermined period of time from when a high-level signal is applied from the AND gate 4. Therefore, in the prior art shown in FIG. 1, the light is turned on for a predetermined period of time from when a person enters the area when the illuminance is less than a predetermined value, such as at night, and is turned off after the elapse of the predetermined period of time. In the prior art shown in FIG. 1, the human body detection means 3 detects changes in infrared rays with a wavelength of about 10 μm generated by the human body temperature, so it is difficult to use a lighting lamp l with a wide wavelength distribution like an incandescent lamp. When used, signals equivalent to human body detection are derived when the illumination lamp 1 is turned on and off. Therefore, even if a person is outside the area, the human body detection means 3 detects that the person has entered the area when the illumination lamp is turned off, and the illuminance detection means 2 detects that it is dark. In response, the illumination lamp 1 is turned on for a predetermined period of time determined by the timer 1°, and after the elapse of the specified period of time, the illumination lamp 1 is turned off, and when the illumination lamp 1 is turned off, the illumination lamp 1 is turned on again for a certain period of time. This will cause malfunction. In order to prevent such malfunctions, in the prior art, as shown in FIG.
Instead, eight human body detection means 34 having pyroelectric sensors 31, 32 and a differential circuit 33 are used. This human body detection means 34 uses a pyroelectric sensor 31° 3 like a flashing lighting lamp.
When the pyroelectric sensors 31, 32, and 2 detect at the same time, no detection output is derived from the differential circuit 33, and when the pyroelectric sensors 31, 32, and - detect the movement of a human body with a time difference, the differential circuit 33 outputs no detection output. The detector is configured to derive a detection output. Therefore, the prior art shown in FIG. 2 requires two pyroelectric sensors, which is expensive and requires a complicated circuit configuration.

Basically, it was necessary to make the detection performance of the pyroelectric sensors the same.

The purpose of the present invention is to solve the above-mentioned ill! An object of the present invention is to provide an automatic lighting device for illuminating lights that can solve the problem and reliably prevent malfunctions.

The present invention will be explained in detail below with reference to the drawings.

FIG. 3 is a simplified block circuit diagram of one embodiment of the present invention, and parts corresponding to the prior art of FIGS. 1 and 2 are given the same reference numerals. The illumination light 1 is an incandescent lamp, a warning light, a mercury lamp, or the like, and is used in an entrance, a staircase, etc., and illuminates a predetermined area. The illuminance detection means 2 detects the illuminance of the illuminated area of the illumination lamp 1, and includes a phototransistor 12, an operational amplifier 14, a resistor 15,
16, ]7 is provided. A series circuit consisting of a resistor 15 and a phototransistor 12 is connected between the DC power supply and ground. Resistor 15 and 7 Oh)) Resistor 12
The common connection point 19 of is connected to the non-inverting input of the operational amplifier 14. DC 1 again! between the source and ground.
A series circuit consisting of 6.17 is connected and resistor 16.17
The common connection point 20 of is connected to the inverting input of the operational amplifier 14.

The output of operational amplifier 14 is connected to line 21 as I! P is continued.

In the illuminance detection means 11 constructed in this way,
The voltage division ratio between the resistor 16 and the resistor 17 is set to a constant voltage corresponding to a predetermined illuminance. Photo 10 star 1
2 produces a photovoltaic effect by being irradiated with light, and a photocurrent proportional to the illumination intensity flows from the collector to the emitter.

7e)) When the illuminance detected by the transistor 12 becomes less than the predetermined illuminance, the photocurrent flowing through the phototransistor 12 decreases, the voltage at the connection point 19 becomes Vl9, and the voltage at the connection point 2
If the voltage of 0 is V2O, it becomes V19)V2O. Accordingly, a high level signal as an illuminance detection signal is derived from the operational amplifier 14 to the line 21.

When the illuminance detected by the phototransistor 12 exceeds the predetermined illuminance, the light flowing through the phototransistor 12 *a
increases, and the voltage at connection points 19 and 20 V19. V20 becomes Vl 9 (V2O. Accordingly, a low level signal is derived from the operational amplifier 14 to the line 21. In other words, no illuminance detection signal is derived. Also, when the illumination lamp l is turned on, the signal near the illumination lamp) The illuminance detection means 2 is installed in the
By changing the voltage division ratio of resistors 16 and 17, the voltage V2 at connection point 20
By lowering 0, that is, by increasing the sensitivity, the illuminance detection means detects that the illuminance exceeds a predetermined illuminance and derives a low-level signal.

The human body detection means 3 includes, for example, a pyroelectric sensor 31.

The pyroelectric sensor 31 is a sensor that utilizes the pyroelectric effect in which charges are generated on the surface of an insulating material when a temperature change is applied to that material. Generated by human body temperature according to 1
Detects changes in infrared light with a wavelength of about 0 μm. It also detects when the lighting lamp 1 is turned on and when it is turned off. Therefore, the human body detection means 3 uses a signal of 5, e.g. It is led out to line 23 for time Tl.

The delay means 35 is an integral type delay circuit consisting of a resistor 36 and a capacitor 374), one end of the I resistor 36 is connected to the line 21, and the other end of the resistor 36 is connected to the line 24.
connected to. Therefore, the signal applied from line 21 is led out to line 24 after a delay time T2 determined by the resistance value of resistor 36 and the capacitance of capacitor 37.

The control means 24 includes a relay 8 having an AND gate 4, a transistor 5, a relay coil 6 and a relay switch 7.
, an AC type #9, a timer IO, and a resistor 25.

A line 23 is connected to one input of the AND gate 4, and a line 24 is connected to the other input of the AND gate 4. The output of AND gate 4 is the timer IOK terminal lfr
, I can pass. The timer 10 is a so-called on-timer that derives a high-level signal for a predetermined fixed operating time T3 from when a high-level signal is applied from the AND gate 4. Note that the time limit TI, delay time T2, and operating time T3 are TI(T2(T3).Timer 10
The output of is connected to the pace of transistor 5 via resistor 25. Connect the relay wire between the DC power supply and ground.
A series circuit consisting of transistor 6 and transistor 5 is connected. The relay switch 7 and the alternating current [69] are connected in series, and roughly connected to the illumination lamp 1 to form a closed loop.

In the control means 24 configured in this way, the line 21
When line 23 and line 23 are at high level, AND gate 4 derives a high level signal.

Therefore, the timer lO is at /% low level during the operating time T2, and the transistor 5 is at 214 m level during the operating time T2.
do. When transistor 5 becomes conductive, relay coil 6 of relay 8 is excited, and relay switch 7 becomes conductive accordingly. When the relay switch 7 is conductive, the lighting lamp 1 is turned on by alternating current t.
It is powered by #t9 and lights up. Operating time T3
When the output power of the rear timer IO becomes o-L/bevel, the transistor 5 is cut off, the relay fill 6 is demagnetized, the relay switch 7 is turned on and off, and the illumination lamp is turned off.

Referring to FIG. 4, when the illuminance of the area that can be illuminated by the illumination lamp 1 becomes dark and becomes less than the predetermined teruya at time tl, the illuminance detection means 2 sends the line 21 to the 71 illuminance level as shown in FIG. 4f+lK. A signal is derived. Therefore, a signal at the noise level is derived from the delay means 35 to the line 24 at time t2 after the delay time T2. Time t
3, when a person enters a predetermined area, a noise level signal is derived from the human body detection means 3 to the line 23 for a limited time Tl as shown in FIG. 4(3). Therefore, from the AND gate 4 to the timer 10, as shown in FIG.
) is given, and the timer lO
A high level signal shown in FIG. 4 (6) is applied to the transistor 5 for an operating time T3. In response, the illumination lamp 1 is turned on as shown in FIG. 4 (6). Further, when the illumination lamp 1 is turned on, a low level signal is derived from the illuminance detection means 2 to the line 21. Therefore, from the delay 1 means 35 to the line 24, the time t after the delay time T2 is transmitted.
4, a low level signal is derived.

When a person hangs a predetermined area at time t5 before the elapse of the operation time T3 predetermined by the timer 10,
Although a high level signal is derived from the human body detection means 3 to the line 23 as shown in FIG. 4 f31K, the line 24 is at a low level and the output of the AND gate 4 is at a low level. Furthermore, since the output of the timer 10 is at a high level, the lighting lamp 1 remains lit.

At time t6 after the operating time T3 has elapsed, the output of the timer IO becomes low level as shown in FIG. 4(5)K.

In response, the illumination lamp 1 is turned off as shown in FIG. 4(6)K.

When the illumination lamp 1 goes out, the PIA degree detection means 2
The output becomes high level as shown in Figure 4 (1),
Further, the human body detection means 3 derives a high level signal as shown in FIG. 4(3). Delay time T2 from this time t6
Since the output of the delay means 35 is at a low level as shown in FIG. 4(2) until later time t7, the output of the AND gate 4 remains at a low level as shown in FIG. 4(4). Therefore, a malfunction in which the illuminating lamp 1 is turned off, the human body detection means 3 detects the extinguishment, and the illuminating lamp 1 is turned on again even though no one is in the area is prevented.

As another embodiment of the present invention, the AC FIL power supply may be a DC power supply. Further, as another embodiment of the present invention, the control means 11 may be constructed using a semiconductor switch such as a triac instead of the relay switch 7.

As described above, according to the present invention, it is possible to avoid a malfunction in which the illumination light turns off, the human body detection means detects the extinguishment, and the illumination light turns on again even though the person is not in the area where the illumination light can illuminate. Prevented. In addition, a single pyroelectric sensor may be used as the human body detection means, and the structure of the human body detection means is simplified and inexpensive. Further, the illuminance detection means may receive light from a lighting lamp,
Therefore, the installation area of the illuminance detection means can be expanded.

Furthermore, the illuminance detection means can be made highly sensitive, and therefore the illumination lamp can be prevented from being turned on when it is not very dark, and energy can be saved accordingly.

[Brief explanation of drawings]

1 and 2 are block circuit diagrams of the prior art of the present invention, FIG. 3 is a block circuit diagram of an embodiment of the present invention, and FIG.
The figure is a waveform diagram for explaining the operation. ]...Illumination lamp, 2...Illuminance detection means, 3...Human body detection means, ]0...Timer, 11...Control means, 3
5... Delaying Means Agent Patent Attorney Kyokei Kan

Claims (1)

[Claims] Checking the illuminance of the area that can be illuminated by the lighting lamp and the lighting lamp.
U(L, illuminance detection means for deriving an illuminance detection signal when the illuminance is less than a predetermined illuminance; a delay means for deriving the illuminance detection signal from the illuminance detection means by delaying it by a predetermined delay time; a human body detection means for detecting a change in infrared light due to a person entering or hanging outside the area, and deriving a human body detection signal for a predetermined time period when the infrared light changes; and a human body detection signal from the human body detection means. is given, and M
and control means for lighting the illumination lamp for a predetermined operating time when an illuminance detection signal is given from the delay means J, the time limit, the delay time, and the operating time increasing in this order. An automatic lighting device for an illumination lamp, characterized in that the automatic lighting device is configured to detect that the illuminance exceeds the illuminance and does not derive an illuminance signal.