CN202533765U

CN202533765U - Safety switching circuit

Info

Publication number: CN202533765U
Application number: CN201220105088XU
Authority: CN
Inventors: 吴金玉; 吴雄杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-20
Filing date: 2012-03-20
Publication date: 2012-11-14
Anticipated expiration: 2022-03-20

Abstract

The utility model relates to a safety switching circuit, which comprises an infrared light modulation and emission circuit, a singlechip control circuit and a GSM SMS transmitting/receiving circuit. The output signal of the infrared light modulation and emission circuit is transmitted sequentially through an infrared receiving amplifier and a light-operated trigger circuit to a SCR control circuit. The output signal of the SCR control circuit is in bidirectional data communication with the singlechip control circuit. The output signal of the singlechip control circuit is in bidirectional output data communication with the GSM SMS transmitting/receiving circuit. When the on/off of equipment or lighting electric equipment needs to be controlled remotely, a text message is formulated on a handset by means of the GSM SMS transmitting/receiving circuit. Then a singlechip decodes the text message and sends out a control signal for switching on or off an SCR. Thus, the remote intelligent control mode is realized. The safety switching circuit has the advantages of simple and practical circuits and can be served as a guard alarm device at night, an energy-saving illumination control device and the like.

Description

A kind of safety cout off circuit

Technical field

The utility model relates to a kind of on-off circuit, particularly be a kind of safety cout off circuit.

Background technology

Traditional mode switching control is through rf-mode control or modes such as wired and timing controlled, and this mode can not be fit to the far distance controlled pattern, can not satisfy opening or closing of multiple occasion remote-control apparatus starting or electric consumption on lighting equipment.

The utility model content

The purpose of the utility model is to overcome above-mentioned deficiency, and a kind of safety cout off circuit is provided.

The utility model solves the technical scheme that its technical matters adopted: a kind of safety cout off circuit; Comprise infrared light modulation transmitter, single chip machine controlling circuit and GSM short message receiving-transmitting circuit; The output signal of said infrared light modulation transmitter transfers to the SCR control circuit through infrared reception amplifier, light-operated trigger circuit successively; The output signal of said SCR control circuit and single chip machine controlling circuit bidirectional data communication, the output signal of said single chip machine controlling circuit is communicated by letter with the two-way output data of GSM short message receiving-transmitting circuit.

Said infrared light modulation transmitter is by the output terminal connection NE555 time base circuit IC1 of infrared-emitting diode VD1 and resistance R 6, the R7 of output terminal connection thereof, the astable multivibrator that capacitor C 5 constitutes.

Said infrared reception amplifier is made up of the emitter connection resistance R 2 of transistor VT1 and the base stage of transistor VT2, and the output terminal of said transistor VT2 is connected to the resistance R 5 that is connected by NE555 time base circuit IC1 and input end thereof, the single-shot trigger circuit that capacitor C 2 constitutes.

Said light-operated trigger circuit adopt the light-operated voltage divider of being made up of the resistance R 8 of NE555 time base circuit IC1 output terminal connection and photoresistance RL.

Through adopting above-mentioned technical scheme, the beneficial effect of the utility model is: the utility model was not worked on the daytime that natural light is arranged, and just worked after having only at nightfall; Be used for occasions such as guard and alarm or illuminating lamp control; When needing the opening or closing of remote-control apparatus or electric consumption on lighting equipment, can through GSM short message receiving-transmitting circuit with the mobile phone editing short message after, after single-chip microcomputer is deciphered, send control signal; Drive controllable silicon conducting or disconnection; Reach the remote intelligent control model, it is simple, practical to have a circuit, can be used as alarm device on duty or economize on electricity illumination control apparatus etc. at nightfall.

Description of drawings

Fig. 1 is the frame assumption diagram of the utility model;

Fig. 2 is the circuit theory diagrams of the utility model.

Embodiment

Like Fig. 1, shown in Figure 2; A kind of safety cout off circuit of the utility model; Comprise infrared light modulation transmitter 1, single chip machine controlling circuit 2 and GSM short message receiving-transmitting circuit 3; The output signal of said infrared light modulation transmitter 1 transfers to SCR control circuit 13 through infrared reception amplifier 11, light-operated trigger circuit 12 successively; The output signal of said SCR control circuit 13 and single chip machine controlling circuit 2 bidirectional data communications, the output signal of said single chip machine controlling circuit 2 is communicated by letter with GSM short message receiving-transmitting circuit 3 two-way output datas.

Said infrared light modulation transmitter 1 is connected resistance R 6, the R7 of NE555 time base circuit IC1 and output terminal connection thereof by the output terminal of infrared-emitting diode VD1; The astable multivibrator that capacitor C 5 constitutes; The vibration square wave is by the 5th pin output of NE555 time base circuit IC1; Drive infrarede emitting diode VD1 and send modulating pulse light; R1 is a current-limiting resistance, and said infrared light modulation transmitter 1 is by the output terminal connection NE555 time base circuit IC1 of infrared-emitting diode VD1 and resistance R 6, the R7 of output terminal connection thereof, the astable multivibrator that capacitor C 5 constitutes; Said infrared reception amplifier 11 is made up of the emitter connection resistance R 2 of transistor VT1 and the base stage of transistor VT2; The output terminal of said transistor VT2 is connected to the resistance R 5 that is connected by NE555 time base circuit IC1 and input end thereof, the single-shot trigger circuit that capacitor C 2 constitutes, the light-operated voltage divider that said light-operated trigger circuit 12 adopt the resistance R 8 that connected by NE555 time base circuit IC1 output terminal and photoresistance RL to form, and the infrared light pulse that transistor VT1 reflects back human body converts corresponding electric signal pulse to; Then after transistor VT2 amplifies; The 8th pin that is sent to NE555 time base circuit IC1 with negative-going pulse triggers the set end, and in a single day the single-shot trigger circuit that the resistance R 5 that NE555 time base circuit IC1 and input end thereof connect, capacitor C 2 constitute has trigger pip, and then the 9th pin of NE555 time base circuit IC1 is just exported the direct impulse of a temporarily steady time; Trigger controllable silicon VS conducting, with the power connection of load.

When the 10th pin forced resetting termination of NE555 time base circuit IC1 by the light-operated voltage divider of forming by resistance R 8 and photoresistance RL.During daytime, photoresistance RL is low-resistance because of receiving natural light irradiation, after resistance R 8 dividing potential drops, the 10th pin of NE555 time base circuit IC1 be in electronegative potential (＜0.3V), make NE555 time base circuit IC1 forced resetting.At this moment no matter have or not external trigger pip, the 9th pin of its NE555 time base circuit IC1 is electronegative potential, and controllable silicon VS ends, and load power source is disconnected power supply.After the colour of sky is dark; Photoresistance RL is high resistant (＞1M Ω); The 10th pin of NE555 time base circuit IC1 become noble potential (＞1.4V); Then NE555 time base circuit IC1 trigger just is in and treats the triggering state, in case there is signal to transfer to the 8th pin of NE555 time base circuit IC1, then its 9th pin is just exported a high level pulse.At this moment controllable silicon VS triggering and conducting, relay J gets electric, connects load power source.The 7th pin, the 8th pin, the 14th pin and the 27th pin by single-chip microcomputer U1 insert GSM short message transceiving module U2, send activation bit by single-chip microcomputer U1 to GSM short message transceiving module U2, send information to designated person's mobile phone, and on or deenergization are described.When the needs Long-distance Control is switched on or switched off load power source; Operating personnel can pass through editing short message, send note to GSM short message transceiving module U2, after single-chip microcomputer U1 decoding; The 6th human hair combing waste by single-chip microcomputer U1 goes out control signal; Make controllable silicon VS triggering and conducting or end, relay J gets electric or breaks off, and realizes operated from a distance control.Can be used as alarm device on duty or economize on electricity illumination control apparatus at nightfall.

An above-described preferred embodiment that is merely the utility model can not limit the scope that the utility model is implemented, and every equalization of being done according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.

Claims

1. safety cout off circuit; It is characterized in that: comprise infrared light modulation transmitter (1), single chip machine controlling circuit (2) and GSM short message receiving-transmitting circuit (3); The output signal of said infrared light modulation transmitter (1) transfers to SCR control circuit (13) through infrared reception amplifier (11), light-operated trigger circuit (12) successively; The output signal of said SCR control circuit (13) and single chip machine controlling circuit (2) bidirectional data communication, the output signal of said single chip machine controlling circuit (2) is communicated by letter with the two-way output data of GSM short message receiving-transmitting circuit (3).

2. a kind of safety cout off circuit according to claim 1; It is characterized in that: said infrared light modulation transmitter (1) is by the output terminal connection NE555 time base circuit IC1 of infrared-emitting diode VD1 and resistance R 6, the R7 of output terminal connection thereof, the astable multivibrator that capacitor C 5 constitutes.

3. a kind of safety cout off circuit according to claim 2; It is characterized in that: said infrared reception amplifier (11) is made up of the emitter connection resistance R 2 of transistor VT1 and the base stage of transistor VT2, and the output terminal of said transistor VT2 is connected to the resistance R 5 that is connected by NE555 time base circuit IC1 and input end thereof, the single-shot trigger circuit that capacitor C 2 constitutes.

4. a kind of safety cout off circuit according to claim 3 is characterized in that: said light-operated trigger circuit (12) adopt the light-operated voltage divider of being made up of the resistance R 8 of NE555 time base circuit IC1 output terminal connection and photoresistance RL.