CN201837608U

CN201837608U - Smoking alarm circuit

Info

Publication number: CN201837608U
Application number: CN2010206027537U
Authority: CN
Inventors: 黄家兴; 吴贵森
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-11-12
Filing date: 2010-11-12
Publication date: 2011-05-18
Anticipated expiration: 2020-11-12

Abstract

The utility model relates to a smoking alarm circuit for the field of public health security, which comprises a microwave detection circuit, a smoke detection circuit, a single chip microcomputer control circuit, a smoke ventilator driving circuit and an audio alarm circuit. Detection signals of the microwave detection circuit are output and connected to the single chip microcomputer control circuit, after the single chip microcomputer control circuit delays internally for certain seconds to control and drive the smoke ventilator driving circuit to be powered off, the smoke detection circuit transmits the detection signals to the single chip microcomputer control circuit, and the single chip microcomputer control circuit outputs signals to drive the smoke ventilator driving circuit to be powered on, and the audio alarm circuit gives out warning, thereby intelligent control is realized, and the smoking alarm circuit is energy-saving, convenient and practical.

Description

A kind of smoking warning circuit

Technical field

The utility model relates to the warning device field, particularly relates to a kind of smoking warning circuit that is used for the public safety health field.

Background technology

At present, a lot of public arenas are unsuitable or no smoking allowed, and the smoker endangers publilc health when smoking, set up special smoking room in public places such as airport, senior markets, traditional smoking room has been installed exhaust blower, but exhaust blower is no matter there is nobody all to be in running status, and consumed power is very big.

The utility model content

The purpose of this utility model provides a kind of promptly energy-conservation, has the smoking warning circuit of voice reminder again.

The technical scheme that the utility model adopted is such: a kind of smoking warning circuit, comprise the Microwave Measurement circuit, the Smoke Detection circuit, single chip machine controlling circuit, the induced-draft fan driving circuit, voice alarm circuit, the detection signal output of described Microwave Measurement circuit connects single chip machine controlling circuit, through single chip machine controlling circuit internal delay time certain hour after second, the outage of controlling and driving induced-draft fan driving circuit, described Smoke Detection circuit is delivered to single chip machine controlling circuit with detection signal, drive the induced-draft fan driving circuit by single chip machine controlling circuit output and get electricly, and make voice alarm circuit send warning.

Described Microwave Measurement circuit is made up of induced electricity pole piece MD, RD627 infrared sensor IC1, operational amplifier IC3.

Described Smoke Detection circuit is by smoke transducer WTT, and adjustable resistance W1, W2 and operational amplifier IC6 form.

Described voice alarm circuit adopts 9561A audio alert chip IC 4 to connect LM386 audio frequency integrated amplifier chip IC 5, promotes the audio alert that loudspeaker Y sends " harmfulness of smoking health ".

By adopting the aforementioned techniques scheme, the beneficial effects of the utility model are: by the Microwave Measurement human body when indoor, collect smog after, start induced-draft fan by single chip machine controlling circuit by I/O output control, and send audio alert, and realize intelligent control, energy-conservation, convenient, practical.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

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

Embodiment

Further specify the utility model below in conjunction with the drawings and specific embodiments.

As Fig. 1, shown in Figure 2, a kind of smoking warning circuit, comprise Microwave Measurement circuit 1, Smoke Detection circuit 2, single chip machine controlling circuit 3, induced-draft fan driving circuit 4, voice alarm circuit 5, the detection signal output of described Microwave Measurement circuit 1 connects single chip machine controlling circuit 3, through single chip machine controlling circuit 3 internal delay time certain hours after second, 4 outages of controlling and driving induced-draft fan driving circuit, described Smoke Detection circuit 2 is delivered to single chip machine controlling circuit 3 with detection signal, driving induced-draft fan driving circuits 4 by single chip machine controlling circuit 3 outputs must be electric, and makes voice alarm circuit 5 send warning.

Described Microwave Measurement circuit 1 is by induced electricity pole piece MD, RD627 infrared sensor IC1, operational amplifier IC3 forms, connect the 1st of RD627 infrared sensor IC1 by induced electricity pole piece MD output, 2 pin, the 6th pin of RD627 infrared sensor IC1 is connected to the 2nd pin of operational amplifier IC3 through resistance R 5, the 3rd pin of operational amplifier IC3 and the 1st pin parallel resistance R6, be delivered to the 34th pin I/O port of single chip machine controlling circuit IC2 through resistance R 7 by the output terminal of the 1st pin of operational amplifier IC 3, in the time of in human body enters RD627 infrared sensor IC1 institute monitored area, RD627 infrared sensor IC1 output weak voltage signal is after operational amplifier IC3 amplifies, illustrate that people have entered smoking room, to detect the 34th foot mouth be high level state to single chip machine controlling circuit IC2 after amplifying, single chip machine controlling circuit IC2 internal delay time is after 900 seconds, the low level of its 2nd pin output makes triode Q2 conducting through resistance R 2, relay J discharges, promoting contactor KM also cuts off the power supply, exhaust blower is not worked, and reaches energy-conservation purpose.

Described Smoke Detection circuit 2 is by smoke transducer WTT, adjustable resistance W1, W2 and operational amplifier IC6 form, smoke transducer WTT passes through resistance R 1,1R1 and adjustable resistance W1, the 5th pin and the 6th pin of W2 concatenation operation amplifier IC6, the 7th pin output terminal of operational amplifier IC6 is connected to the 1st pin of single chip machine controlling circuit IC2 through resistance 1R3, when gas sensor smoke transducer WTT surface adsorption when smog or inflammable gas, its A, A1 interpolar resistance reduces, at this moment because W1, W2 and A, the dividing potential drop of A1 electrode resistance descends the current potential of Node B, C point current potential also and then descends, the 7th pin of operational amplifier IC3 is in not rollover states, be output as low level, single chip machine controlling circuit IC2 detected its 1st pin I/O end and was low level state this moment, illustrate that the indoor people of having is at the generation smog of smoking, divide two-way output by single chip machine controlling circuit IC2 internal processes s operation control, the first via ends triode Q2 by the 2nd pin output low level of single chip machine controlling circuit IC2 through resistance R 2, the relay J adhesive, promote contactor KM adhesive, exhaust blower gets electric work smoke evacuation; The 28th pin output low level of secondary route single chip machine controlling circuit IC2 ends triode Q1 through resistance R 3,9561A audio alert chip I C4 gets, by the 2nd pin output audio signal, after this signal is coupled to the 3rd pin audio frequency amplification of LM386 audio frequency integrated amplifier chip IC 5 through capacitor C 2, connect capacitor C 3 couplings by its 6th pin output and amplify, promote loudspeaker Y and send audio alert " harmfulness of smoking health ".

More than show and described ultimate principle of the present utility model and principal character and advantage thereof; the technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the explanation just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall in claimed the utility model scope, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. smoking warning circuit, it is characterized in that: comprise Microwave Measurement circuit (1), Smoke Detection circuit (2), single chip machine controlling circuit (3), induced-draft fan driving circuit (4), voice alarm circuit (5), the detection signal output of described Microwave Measurement circuit (1) connects single chip machine controlling circuit (3), through single chip machine controlling circuit (3) internal delay time certain hour after second, controlling and driving induced-draft fan driving circuit (4) outage, described Smoke Detection circuit (2) is delivered to single chip machine controlling circuit (3) with detection signal, driving induced-draft fan driving circuit (4) by single chip machine controlling circuit (3) output must be electric, and makes voice alarm circuit (5) send warning.

2. a kind of smoking warning circuit according to claim 1 is characterized in that: described Microwave Measurement circuit (1) is made up of induced electricity pole piece MD, RD627 infrared sensor IC1, operational amplifier IC3.

3. a kind of smoking warning circuit according to claim 1 is characterized in that: described Smoke Detection circuit (2) is by smoke transducer WTT, and adjustable resistance W1, W2 and operational amplifier IC6 form.

4. a kind of smoking warning circuit according to claim 1, it is characterized in that: described voice alarm circuit (5) adopts 9561A audio alert chip IC 4 to connect LM386 audio frequency integrated amplifier chip IC 5, promotes the audio alert that loudspeaker Y sends " harmfulness of smoking health ".