CN202084149U

CN202084149U - Elevator smoke detector

Info

Publication number: CN202084149U
Application number: CN2011201980901U
Authority: CN
Inventors: 何海参
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-14
Filing date: 2011-06-14
Publication date: 2011-12-21
Anticipated expiration: 2021-06-14

Abstract

The utility model relates to the elevator safety field, particularly to an elevator smoke detector. The elevator smoke detector comprises a photosensitive sensing module, a human body microwave induction module, a one-chip microcomputer control module, a voice alarm module, and a carrier emission alarm module, wherein the signals collected by the photosensitive sensing module are output to the voice alarm module via the control of the one-chip microcomputer control module; and the signals collected by the human body microwave induction module are output to the carrier emission alarm module via the control of the one-chip microcomputer control module. When someone smokes in the elevator and the smoke concentration, detected by the photosensitive sensing module, reaches certain degree, the elevator smoke detector will emit voice alarm via the control of the one-chip microcomputer to remind the smoker to stop smoking for the sake of health. When trapped inside the elevator, the people inside the elevator can press emergency button switch to transmit alarm distress signals to the carrier host via the carrier modulation signals, thereby avoiding being unable to contact outside while trapped inside the elevator as the cell phone can not receive signals inside the elevator.

Description

The elevator smoke detector

Technical field

The utility model relates to the elevator safety field, particularly be a kind of elevator smoke detector.

Background technology

Along with economy, development in science and technology, people are also more and more higher to the requirement of life, and are also increasing to the demand of information.At present, elevator is widely used in commercial building or residential building contour level building, brings great convenience for people's production and life.But when in the elevator use, breaking down, to the overcoming difficulties of troubleshooting of faults and personnel, just might bring danger as the untimely related personnel of notice, and, if any people's portion's smoking within it, will endanger publilc health at the elevator that has come into operation.

The utility model content

The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of elevator smoke detector is provided.

The technical scheme that its technical matters that solves the utility model adopts is: the elevator smoke detector, comprise photosensitive sensing module, the microwave induced module of human body, single chip control module, audio alert module and carrier transmit alarm module, the signal of described photosensitive sensing module collection exports the audio alert module to through single chip control module control, and the signal of the microwave induced module collection of described human body exports the carrier transmit alarm module to through single chip control module control.

Described photosensitive sensing module is made of phototriode series connection potentiometer, and the output terminal of described potentiometer is connected to single chip control module after connecting a keyswitch.

The microwave induced module of described human body is by the input end of induced electricity pole piece output terminal connection RD627 microwave remote sensor, and the input end that the output terminal of RD627 microwave remote sensor is connected to the LM358 operational amplifier constitutes.

Described audio alert module is made of the triode that connects successively, language chip, LM386 audio frequency power amplifier chip and news Chinese percussion instrument.

Described carrier transmit alarm module constitutes oscillatory circuit by the NE555 time base circuit that the output signal of short-circuit type alarm probe circuit is sent to two different frequencies, and the pulse-modulated signal that this oscillatory circuit produces sends the carrier wave alerting signal by the pulse modulated circuit that triode, transformer, electric capacity constitute to the carrier wave main frame again.

By adopting above-mentioned technical scheme, the beneficial effects of the utility model are: when people's smoking was arranged in the elevator, photosensitive sensing module detected smog and reaches finite concentration, sent voice reminder people harmfulness of smoking health through Single-chip Controlling, should stop smoking.When people when elevator is stranded, press urgent keyswitch, send the warning distress signal by carrier (boc) modulated signals to the carrier wave main frame, avoid because of being in shielding in the elevator, mobile phone does not have signal, can't put through outside contact.

Description of drawings

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

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

Embodiment

As shown in Figure 1 and Figure 2, elevator smoke detector of the present utility model, comprise photosensitive sensing module 1, the microwave induced module 2 of human body, single chip control module 3, audio alert module 4 and carrier transmit alarm module 5, the signal that described photosensitive sensing module 1 is gathered exports audio alert module 4 to through single chip control module 3 controls, and the signal that the microwave induced module 2 of described human body is gathered exports carrier transmit alarm module 5 to through single chip control module 3 controls.

Described photosensitive sensing module 1 is made of phototriode VT1 series connection potentiometer RP, the output terminal of described potentiometer RP is connected to single-chip microcomputer IC1 after connecting a keyswitch T1, when not having smoking in the elevator, VT1 is high resistant, IC1 the 35th pin is high level state, when people's smoking and vapour discharge, smog is radiated the plane of illumination of phototriode VT1, the opto-electronic conversion effect takes place in phototriode VT1 immediately, and generation photocurrent, the internal resistance that phototriode VT1 presents is quite low, make the 35th pin I/O end of single-chip microcomputer I C1 be low level state, after single-chip microcomputer IC1 internal processes is judged, the 28th pin output high level signal by single-chip microcomputer IC1, through resistance 1R 3 current limlitings, make triode Q1 conducting, therefore speech chip IC2 obtains supply voltage, the 2nd pin output audio alert signal of speech chip IC2, be coupled to the 3rd pin of LM386 audio frequency power amplifier chip IC 3 through capacitor C 1, after LM386 audio frequency power amplifier chip IC 3 internal audio frequencies amplify, again through its 6th pin output audio signal, after capacitor C 2 couplings are amplified, promote news Chinese percussion instrument Y and send audio alert " Smoking is harmful to your health ", reminds people is noted smoking, and it is healthy to endanger public people.

When the people pushes button switch T1, supply voltage is input to single-chip microcomputer IC1 the 38th pin I/O end and is low level state through resistance 3R1 current limliting, illustrates that the someone sends the elevator faults alerting signal, but in order to confirm whether the people is arranged in elevator, this detector spy is provided with the microwave induced module 2 of human body.

The microwave induced module 2 of described human body is by the input end of the RD627 microwave remote sensor IC4 of induced electricity pole piece TQ output terminal connection, the input end that the output terminal of RD627 microwave remote sensor IC4 is connected to LM358 operational amplifier IC4 constitutes, when human body is movable near induced electricity pole piece TQ, RD627 microwave remote sensor IC4 detects the human-induced signal, this signal is after LM358 operational amplifier IC5 amplifies, send to the 26th pin I/O end of single-chip microcomputer IC1 by the voltage signal of the 1st pin of LM358 operational amplifier IC5 output, be high potential signal this moment, be judged as elevator through the IC1 program people keyswitch T1 that pushes for emergency is arranged, by a NE555 time base circuit U1, the 2nd NE555 time base circuit U2, resistance R 1, resistance R 2, transformer BT etc. form carrier transmit alarm module 5, the 24th pin output noble potential of single-chip microcomputer IC1, through resistance R 6 current limlitings, triode Q2 is ended, the relay J adhesive, its contact J-1 is by transferring normally closed point normal battle to, make short-circuit type alarm probe M and M1 point two terminal shortcircuits, the one NE555 time base circuit U1 constitutes low-frequency oscillatory network, its the 3rd pin output frequency is the low frequency signal of F1, frequency F1 is mainly by the external capacitor C 1 of a NE555 time base circuit U1, resistance R 2 decisions, the 3rd pin output high level of the one NE555 time base circuit U1, the high-frequency oscillating circuits work that the 2nd NE555 time base circuit U2 constitutes, its the 3rd pin is output as the pulse-modulated signal of F2, oscillation frequency F2 is mainly by the external capacitor C 3 of the 2nd NE555 time base circuit U2, resistance R 4 decisions, and oscillation frequency F2 is much larger than F1, the modulation signal of the 2nd NE555 time base circuit U2 output passes through by triode Q1, transformer BT, capacitor C 5, the driving circuit that capacitor C 6 is formed produces the high frequency modulated pulse on line of electric force, the high frequency modulated pulse voltage sends the carrier wave alerting signal to the carrier wave main frame, report to the police to the monitoring alarm center, the professional is in time reached the spot fix a breakdown, the rescue trapped personnel.

Above-described only is a preferred embodiment of the present utility model, can not limit the scope that this practicality 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. elevator smoke detector, it is characterized in that: comprise photosensitive sensing module (1), the microwave induced module of human body (2), single chip control module (3), audio alert module (4) and carrier transmit alarm module (5), the signal that described photosensitive sensing module (1) is gathered exports audio alert module (4) to through single chip control module (3) control, and the signal that the microwave induced module of described human body (2) is gathered exports carrier transmit alarm module (5) to through single chip control module (3) control.

2. elevator smoke detector according to claim 1 is characterized in that: described photosensitive sensing module (1) is made of phototriode series connection potentiometer, and the output terminal of described potentiometer is connected to single chip control module (3) after connecting a keyswitch.

3. elevator smoke detector according to claim 1, it is characterized in that: the microwave induced module of described human body (2) is by the input end of induced electricity pole piece output terminal connection RD627 microwave remote sensor, and the input end that the output terminal of RD627 microwave remote sensor is connected to the LM358 operational amplifier constitutes.

4. elevator smoke detector according to claim 1 is characterized in that: described audio alert module (4) is made of the triode that connects successively, language chip, LM386 audio frequency power amplifier chip and news Chinese percussion instrument.

5. elevator smoke detector according to claim 1, it is characterized in that: described carrier transmit alarm module (5) constitutes oscillatory circuit by the NE555 time base circuit that the output signal of short-circuit type alarm probe circuit is sent to two different frequencies, and the pulse-modulated signal that this oscillatory circuit produces sends the carrier wave alerting signal by the pulse modulated circuit that triode, transformer, electric capacity constitute to the carrier wave main frame again.