KR950009666Y1 - Entrance lamp drive control device - Google Patents

Abstract

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Description

Drive control device such as entrance and exit

1 is a block diagram of a drive controller applied to the present invention.

2 is a detailed circuit diagram of a drive control device applied to the present invention.

3 is an output waveform diagram of each part of the drive control device applied to the present invention.

* Explanation of symbols for main parts of the drawings

1: power supply 2: pyroelectric sensor

3: custom integrated circuit 4: load driver

CDS: Photoconductive element 5: Reset circuit part

6: system oscillator 7: delay oscillator

The present invention relates to a drive control device such as a doorway, and more particularly, to a drive control device such as a doorway and the like which is installed to illuminate an apartment or a general home entrance to accurately turn on without malfunction.

When a person who enters or exits a conventional entrance and exit door is detected by a pyroelectric sensor and a person is detected, the light driving control device for driving a lamp is a short pulse type, and thus the entrance is affected by the surrounding environment (wind or temperature). Even when a person does not enter or exit, a malfunction that causes the lamp to be turned on causes a problem of wasting unnecessary power due to the malfunction.

The purpose of the present invention is to detect the person entering and exiting the entrance and exit the drive immediately when the detection pulse is input, so that when the detection pulse is input twice, so that it can be driven accurately without malfunction due to changes in the surrounding environment. In order to achieve the above object, the present invention provides a power supply unit for supplying a driving voltage, a supercluster unit for detecting infrared rays from a person entering and out, and a sensing input from the pyroelectric sensor unit. A custom integrated circuit comprising a voltage control unit for amplifying, comparing signals, and controlling a predetermined voltage, and a delay unit for delaying driving time. It is composed of a load driver for driving the load by the signal output from the custom integrated circuit.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of a drive control device such as an entrance door of the present invention, and FIG. 2 is a detailed circuit diagram of a drive control device such as an entrance door of the present invention, and the power supply unit 1 converts and supplies an input AC voltage into a predetermined drive constant voltage. And, a pyroelectric sensor (PIR) consisting of an infrared detection plate and a field effect transistor (FET) for detecting infrared rays from a person who receives the drive voltage from the power supply unit 1, a variable resistor (VRl) for adjusting the detection area. The pyroelectric sensor unit 2 composed of the condenser C1, an amplifier 3A for amplifying a detection signal input from the pyroelectric sensor unit 2, and the signal amplified by the amplifier 3A are converted into a reference signal voltage. A voltage control unit for controlling to a predetermined voltage by using a comparison unit 3B for comparison, an optical conductive element (CDS) which operates at 3.5V or more in a bright place and 2.0V or less in a dark place, and a resistor. Drive with 3C A custom integrated circuit 3 comprising a delay unit 3D for delaying the interval, and a light emitting lamp (LED) and a triac (TRAC) for lighting a driving state display and the light by a signal output from the custom integrated circuit 3. ) And a load driver 4 composed of peripheral circuit elements.

In the figure, reference numeral 5 denotes a reset circuit portion, 6 denotes a system oscillation portion, and 7 denotes a delay oscillation portion.

3 is an output waveform diagram of each part of the drive control circuit such as the entrance and exit of the present invention.

Referring to the operation and effect of the subject innovation made up as described above are as follows.

First, when power is supplied from the power supply unit 1 to the back driving control circuit, the pyroelectric sensor unit 2 and the custom integrated circuit 3 enter an operation state while the person entering or exiting the porch in the pyroelectric sensor unit 2. The control unit detects the signal, and the custom integrated circuit 3 performs a control operation on the input signal.

Therefore, the low voltage of the waveform as shown in FIG. 3A through the photoconductive cell CDS of the power controller 3C is applied to the power input when the power is supplied to the power supply 1. When input to the integrated circuit (3), the custom integrated device (3) is a human from the pyroelectric sensor unit (2) after receiving the enable signal after a predetermined time, as shown in (b) of FIG. Will be detected.

Therefore, when sensing is started in the pyroelectric sensor unit 2, the custom integrated circuit 3 amplifies the signal input from the pyroelectric sensor unit 2 through the amplifying unit 3A, and in the amplifying unit 3A. The amplified signal as shown in (c) of FIG. 3 is input to the comparator 3B.

Therefore, the comparison section 3B outputs the compared waveform as shown in (d) of FIG.

At this time, the output waveform of the comparison unit 3B outputs a pulse when a voltage higher than a reference voltage is input from the comparison unit 3B with respect to the signal input from the pyroelectric sensor unit 2.

On the other hand, the custom integrated circuit 3 outputs an oscillation signal for a predetermined time as shown in () of FIG. 3 through the delay oscillator 7 when the output pulse is input from the comparator 3B.

Therefore, the delay oscillator 7 of the custom integrated circuit 3 amplifies and compares the signal detected by the pyroelectric sensor 2, and compares the output pulses of the two consecutive ones as shown in (d) of FIG. When a pulse is input, an oscillation signal as shown in FIG. 3 (i) is outputted, and this oscillation signal outputs a light emitting lamp (LED) signal of the load driver 4 to light up the light emitting lamp (LED), thereby presently presenting the present entrance. At the same time as the person is detected, the custom integrated circuit (3) is the second waveform of the output waveform as shown in (d) of the third through the triac (TRAC) output terminal of the load driver 4 When this input is performed, the output waveform as shown in (g) of FIG. 3 is output to drive the triac (TRAC) of the load driver 4, thereby lighting a lamp (lamp) installed in the front door, but the delayed oscillator During the oscillation time set in (7) above The lamp will light up.

As described above, the present invention is a door lamp driving control circuit which detects a person entering and exiting a door by using a pyroelectric sensor and turns on a lamp of the door. When the lamp is turned on only when two pulses are input, the lamp is turned on unnecessarily due to a malfunction caused by a change in the surrounding environment, thereby reducing the reliability of the device and reducing power consumption.

Claims (1)

A pyroelectric sensor having a multi-surface lens having a maximum sensitivity in each divided predetermined area and a conversion element for converting infrared rays captured by the multi-faceted lens into an electrical pulse signal is provided. In a drive control device such as an entrance door that automatically turns on a lamp, a custom integrated circuit which judges that there is a human body when two or more pulse signals are continuously input within a predetermined time interval from a pyroelectric sensor and turns on the entrance door. Drive control device, such as entrance entrance characterized in that it comprises a.