CN2148441Y

CN2148441Y - Sound- and light-controlled automatic switch

Info

Publication number: CN2148441Y
Application number: CN 92220293
Authority: CN
Inventors: 何金泉
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-18
Filing date: 1992-09-18
Publication date: 1993-12-01
Anticipated expiration: 2002-09-18

Abstract

The utility model relates to a sound and light-controlled automatic switch which is suitable for illuminating in public places, comprising a light control circuit, a sound control circuit, an AND gate, an adjustable resistor, an AC delay switch and a DC power circuit. The light control circuit and the sound control circuit are connected with the input end of the AND gate. The output end of the AND gate is connected with the circuit of the adjustable resistor. The adjustable resistor is connected with the control end of the AC delay switch. The sound and light-controlled automatic switch is locked by itself, and the lamp is turned off in daytime. The lamp is turned on by sound at night, and is turned off without sound. The purpose of controlling the illumination automatically is achieved.

Description

Sound- and light-controlled automatic switch

The utility model is a kind of sound, automatic light control switch, is used for the public place of corridor, corridor and the needs illumination control at various dwelling houses, office building, hostel.

Existing control switch to be belonged to mechanically, and as backguy, key switch, Push And Release all needs manual operation, and switch is fragile and occur phenomenon kept burning day and night easily; The time-delay lighting switch that occurs again also needs the people to go to the operation of switch place in recent years, and is very inconvenient under the dark situation of light at night.

Task of the present utility model is a kind of improved sound of design, light-operated automatic lighting switch, and this switching purposes is not need manual operation under the dark situation of light, and is sound then bright, noiselessly then goes out.Can avoid public place illuminating lamp phenomenon kept burning day and night effectively, and easy to use.

With reference to accompanying drawing 1,2, the utility model is a kind of sound, automatic light control switch, it is characterized in that it is by light-operated, acoustic control, constitutes with door, adjustable resistance, AC delay switch, DC power supply circuit.Light-operated, sound control circuit is received the input with door, connects the adjustable resistance circuit with the output of door, and adjustable resistance connects the control end of AC delay switch, and DC power supply provides the DC power supply of foregoing circuit.The adjustable resistance of sound, automatic light control switch is characterized in that it is in series by one-level transistor switching circuit and a resistance.

Operation principle of the present utility model is as follows:

220 volts of AC power inputs are through D ₁Halfwave rectifier obtains pulsating direct current, obtains 40 volts of DC power supply by resistance step-down, filtering, voltage stabilizing, uses in order to control circuit to be provided.

Light-operated circuit is that photodiode, resistance are in series, and the resistance that utilizes photodiode to present is subjected to the variation of luminous intensity and the characteristic that changes reaches light-operated purpose.

Sound control circuit is that double note amplifier and one-level transistor switching circuit constitute, and piezoelectric ceramic piece is made acoustical-electrical transducer.

AND circuit is made of two switching diodes, is high level as long as two inputs have one or two, and it is output as high level; When input was low level, output also was low level.

Adjustable resistance is that one-level transistor switching circuit and a resistance are in series, and the switching of transistor switch reaches the purpose of adjustable resistance between B point and the ground.

Exchange delay switch circuit by bidirectional trigger diode, bidirectional triode thyristor, one-level transistor switching circuit, delay capacitor constitute.

Specify as follows:

220 volts of electric mains are through fuse, D ₁Halfwave rectifier obtains the pulsating direct current of positive polarity, passes through resistance R ₁Step-down through C ₁, D ₂Filtering, voltage stabilizing, obtain 40 volts of DC power supply at the A point.

On daytime, photodiode is subjected to illumination to be low resistance, saturation conduction, diode AND gate D ₄Input is a high level, D ₄Conducting, BG ₁Base stage obtains bias voltage, BG ₁Conducting, the B point is a low level, and bidirectional trigger diode ST ends, and controllable silicon BCR is obstructed, the output AC-less power, illuminating lamp goes out, and the whole self-locking lamps of switch on daytime put out.

At night, photodiode is subjected to the light deficiency to be high resistant to end D ₄Input is a low level, D ₄End BG ₁End, the B point transfers high level to, through R ₁₂, bidirectional trigger diode ST both end voltage is greater than breakover voltage, the ST conducting, and controllable silicon BCR conducting at this moment, illuminating lamp is bright.While C ₂Be recharged, be enough to make diode AND gate D when its charging voltage rises to ₅During conducting, D ₅Saturation conduction, output high level, BG ₁Logical, the B point transfers low level to, and ST ends, and controllable silicon is disconnected, and illuminating lamp extinguishes, and this process changes C for the time-delay lighting process ₂The capacity of electric capacity can be regulated delay time.

In the sound control circuit, by piezoelectric ceramic piece HTD the sound of picking up (footsteps or voice) is become the faint signal of telecommunication and pass through BG ₄, BG ₃The amplification of two-stage audio frequency is added to transistor switching circuit BG ₂Base stage, if C ₂Voltage is charged to certain value through R ₃Be added to BG ₂Collector electrode, BG at this moment ₂Conducting, C ₂Through R ₃, BG ₂C, the E utmost point discharge immediately.D ₅By, BG ₁End, the B point keeps high potential, and SR and BCR are conducting state, and illuminating lamp is bright.In this process if the time-delay illumination phase in its surrounding environment silent, BG ₂End C ₂Continue to charge to and make D ₅Conducting, BG ₁Conducting, the B point transfers low level to; ST, SCR end immediately, and illuminating lamp puts out.Reach sound, light-operated, time-delay illumination purposes, realize that self-locking on daytime lamp goes out, night sound then brightly, noiseless then go out.

Present embodiment is as follows:

Fig. 1 is the present embodiment electrical schematic diagram

Fig. 2 is the present embodiment block diagram

Fig. 3 is a structural representation

Fig. 4 is a scheme of installation

What the sequence number of marking was represented among the figure thes contents are as follows:

1 ┄ switch enclosure, 2 ┄ on-off plugs

The light-operated window of 3 ┄ combined socket and switchs, 4 ┄

5 ┄ acoustic control windows

The BG of present embodiment ₁, BG ₂Select 3DK7 for use; BG ₃, BG ₄Select 9014 for use; D ₁Select the IN4007 diode for use; D ₂Select 40 volts of voltage stabilizing didoes for use; D ₃Select photodiode for use; D ₄, D ₅Select the 2CK switching diode for use; ST selects bidirectional trigger diode for use; BCR selects the 400V/1A bidirectional triode thyristor for use; HTD selects φ 27 piezoelectric ceramic pieces for use.

Above-mentioned unit, device and corresponding resistance, electric capacity are contained on the printed circuit board (PCB) of being made by electrical schematic diagram, are fixed in the switch enclosure, photodiode is corresponding to light-operated window position; Piezoelectric ceramic piece is corresponding to the acoustic control window position.Incoming line is welded on the plug of upper end in the switch enclosure, and output line is welded on two contacts of lower end socket in the switch enclosure.

Plug with switch enclosure during use is inserted on the lamp holder, and lighting bulb is inserted on the socket of switch enclosure lower end.The Power Limitation of illuminating lamp is in 60W.

Claims

1, a kind of sound, automatic light control switch, it is characterized in that it is by light-operated, acoustic control, constitutes with door, adjustable resistance, AC delay switch, DC power supply circuit, light-operated, sound control circuit is received the input with door, connect the adjustable resistance circuit with the output of door, adjustable resistance connects the control end of AC delay switch, and DC power supply circuit provides the foregoing circuit DC power supply.

2, according to the described sound of claim 1, automatic light control switch, it is characterized in that adjustable resistance is in series by one-level transistor switching circuit and a resistance.