CN204719933U - A kind of smoking warning circuit for public place - Google Patents
A kind of smoking warning circuit for public place Download PDFInfo
- Publication number
- CN204719933U CN204719933U CN201520257116.3U CN201520257116U CN204719933U CN 204719933 U CN204719933 U CN 204719933U CN 201520257116 U CN201520257116 U CN 201520257116U CN 204719933 U CN204719933 U CN 204719933U
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- diode
- chip
- warning circuit
- connects
- gas sensor
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Abstract
The utility model discloses a kind of smoking warning circuit for public place, comprise power circuit, gas sensor P1 and warning circuit, described power circuit comprises transformer W, switch S 1, chip IC 1 and rectifier bridge T, and described warning circuit comprises chip IC 2, relay J, diode D1, blower fan M and loudspeaker B.The utility model smoking warning circuit structure is simple, components and parts are few, gas sensor is used to detect in real time air in public place, when flue gas concentration is higher than certain value, sending sound and light alarm reminds smoker to stop smoking, and start blower fan automatic air-exchanging, the alarming device using this circuit to make is highly sensitive, good warning effect not only simultaneously, and can automatic exhausting, be applicable to promoting the use of.
Description
Technical field
The utility model relates to a kind of warning circuit, specifically a kind of smoking warning circuit for public place.
Background technology
Harm of smoking is healthy, all no smoking for current many public place or office etc., but still have the unconscious smoking as usual of people, make in room full of smoke, not only compromise the health of self, and allow a lot of nonsmoker suffer damage, ordinary people requires that the other side stops smoking causing conflict rashly, be unfavorable for social security, traditional smoking alarming device only has a warning sign mostly, attractive force is not strong, be difficult to play good warning function, and traditional alarming device function singleness, even if warned the other side also to process the smog produced.
Utility model content
The purpose of this utility model is to provide a kind of smoking warning circuit for public place of highly sensitive, diverse in function, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of smoking warning circuit for public place, comprise power circuit, gas sensor P1 and warning circuit, described power circuit comprises transformer W, switch S 1, chip IC 1 and rectifier bridge T, and described warning circuit comprises chip IC 2, relay J, diode D1, blower fan M and loudspeaker B;
The two ends of the winding N1 of described transformer W connect the two ends of 220V line voltage respectively, one end connecting valve S1 of the winding N2 of transformer W, the other end of switch S 1 connects 1 port of rectifier bridge T, the other end of the winding N2 of transformer W connects 3 ports of rectifier bridge T, 2 ports of rectifier bridge T connect 1 pin of chip IC 1 and the contact J-1 of relay J, the 4 port contact resistance R2 of rectifier bridge T, electric capacity C1, electric capacity C2, electric capacity C3, a stiff end of potentiometer RP2, the negative electrode of diode D1, the anode of diode D2, the anode of diode D4, blower fan M, loudspeaker B, 3 pins of relay J and chip IC 2, the other end of the contact J-1 of relay J connects the anode of diode D1, the other end of blower fan M and the other end of loudspeaker B, 2 pin contact resistance R1 of chip IC 1, the other end of electric capacity C1, the collector of triode VT1 and 1 pin of chip IC 2, the other end of resistance R1 connects the negative electrode of diode D2 and the base stage of triode VT1, the emitter of triode VT1 connects the other end of electric capacity C2, the sliding end of potentiometer RP1, a stiff end of potentiometer RP1 and 1 pin of gas sensor P1, another stiff end of potentiometer RP1 connects 2 pins of gas sensor P1, 3 pins of gas sensor P1 connect another stiff end of potentiometer RP2, the other end of the 4 pin contact resistance R2 of gas sensor P1, the sliding end of potentiometer RP2 connects the anode of diode D3, the negative electrode of diode D3 connects the other end of electric capacity C3 and 2 pins of chip IC 2, 4 pins of chip IC 2 connect the negative electrode of diode D4 and the other end of relay J.
As preferred version of the present utility model: described chip IC 1 is 7805 three terminal regulators, chip IC 2 is TWH8778 type power switch circuit.
As preferred version of the present utility model: 220V voltage is become 12V voltage by winding N1 and N2 of described transformer W.
As preferred version of the present utility model: the model of described gas sensor P1 is QM-N5.
As preferred version of the present utility model: described diode D2 is light emitting diode.
Compared with prior art, the beneficial effects of the utility model are: the utility model smoking warning circuit structure is simple, components and parts are few, use gas sensor to detect in real time air in public place, when flue gas concentration is higher than certain value, sends sound and light alarm and remind smoker to stop smoking, start blower fan automatic air-exchanging simultaneously, the alarming device using this circuit to make is highly sensitive, good warning effect not only, and can automatic exhausting, is applicable to promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the smoking warning circuit for public place.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of smoking warning circuit for public place, comprise power circuit, gas sensor P1 and warning circuit, described power circuit comprises transformer W, switch S 1, chip IC 1 and rectifier bridge T, and described warning circuit comprises chip IC 2, relay J, diode D1, blower fan M and loudspeaker B;
The two ends of the winding N1 of described transformer W connect the two ends of 220V line voltage respectively, one end connecting valve S1 of the winding N2 of transformer W, the other end of switch S 1 connects 1 port of rectifier bridge T, the other end of the winding N2 of transformer W connects 3 ports of rectifier bridge T, 2 ports of rectifier bridge T connect 1 pin of chip IC 1 and the contact J-1 of relay J, the 4 port contact resistance R2 of rectifier bridge T, electric capacity C1, electric capacity C2, electric capacity C3, a stiff end of potentiometer RP2, the negative electrode of diode D1, the anode of diode D2, the anode of diode D4, blower fan M, loudspeaker B, 3 pins of relay J and chip IC 2, the other end of the contact J-1 of relay J connects the anode of diode D1, the other end of blower fan M and the other end of loudspeaker B, 2 pin contact resistance R1 of chip IC 1, the other end of electric capacity C1, the collector of triode VT1 and 1 pin of chip IC 2, the other end of resistance R1 connects the negative electrode of diode D2 and the base stage of triode VT1, the emitter of triode VT1 connects the other end of electric capacity C2, the sliding end of potentiometer RP1, a stiff end of potentiometer RP1 and 1 pin of gas sensor P1, another stiff end of potentiometer RP1 connects 2 pins of gas sensor P1, 3 pins of gas sensor P1 connect another stiff end of potentiometer RP2, the other end of the 4 pin contact resistance R2 of gas sensor P1, the sliding end of potentiometer RP2 connects the anode of diode D3, the negative electrode of diode D3 connects the other end of electric capacity C3 and 2 pins of chip IC 2, 4 pins of chip IC 2 connect the negative electrode of diode D4 and the other end of relay J.
Chip IC 1 is 7805 three terminal regulators, and chip IC 2 is TWH8778 type power switch circuit.
220V voltage is become 12V voltage by winding N1 and N2 of transformer W.
The model of gas sensor P1 is QM-N5.
Diode D2 is light emitting diode.
Principle of work of the present utility model is: circuit access 220V line voltage, 220V voltage becomes 12V voltage after transformer W, then 12V direct current is become by rectifier bridge T, three terminal regulator IC1 carries out voltage stabilizing operation to 12V direct current, the critical value of regulator potentiometer RP1 adjusting smoke concentration, demand according to different places decides, potentiometer RP2 is the pull-up resistor of gas sensor P1, interior air under normal circumstances in public places, in high resistance between gas sensitive device 1 pin and 2 pin, potentiometer RP2 output low level.It is low level that TWH8778 power switch circuit controls the 2nd pin, and inner high speed power switch ends, and relay J is failure to actuate, and its normally opened contact J-1 opens, and blower fan M, loudspeaker B and light emitting diode D1 all do not work.If have flue gas in room air and concentration constantly increases, the conductivity of gas sensor P1 can become large thereupon, RP2 output level increases, when level rises to TWH8778 the 2nd pin threshold voltage 1.6V and diode VD5 conduction voltage drop 0.65V sum, and TWH8778 internal power switch conduction, relay J action adhesive, contact J-1 closes, and blower fan M is energized outside air draft, and " no smoking " warning sign is illuminated in light emitting diode D1 luminescence simultaneously, loudspeaker B sends warning sound, and advice people do not want smoking.Along with the outside air draft of M, room air is pure and fresh gradually, RP2 output level reduces, and diode D3 ends, and the electric charge now electric capacity C3 stored discharges to lsi internal circuit by TWH8778 the 2nd pin, continue open-minded so TWH8778 still can be maintained, until when C3 voltage is down to below 1.6V, TWH8778 internal power switch blocks, and relay J discharges, contact J-1 resets, and blower fan M, light emitting diode D1 and loudspeaker B all quit work.
Claims (5)
1., for a smoking warning circuit for public place, comprise power circuit, gas sensor P1 and warning circuit; It is characterized in that, described power circuit comprises transformer W, switch S 1, chip IC 1 and rectifier bridge T, and described warning circuit comprises chip IC 2, relay J, diode D1, blower fan M and loudspeaker B;
The two ends of the winding N1 of described transformer W connect the two ends of 220V line voltage respectively, one end connecting valve S1 of the winding N2 of transformer W, the other end of switch S 1 connects 1 port of rectifier bridge T, the other end of the winding N2 of transformer W connects 3 ports of rectifier bridge T, 2 ports of rectifier bridge T connect 1 pin of chip IC 1 and the contact J-1 of relay J, the 4 port contact resistance R2 of rectifier bridge T, electric capacity C1, electric capacity C2, electric capacity C3, a stiff end of potentiometer RP2, the negative electrode of diode D1, the anode of diode D2, the anode of diode D4, blower fan M, loudspeaker B, 3 pins of relay J and chip IC 2, the other end of the contact J-1 of relay J connects the anode of diode D1, the other end of blower fan M and the other end of loudspeaker B, 2 pin contact resistance R1 of chip IC 1, the other end of electric capacity C1, the collector of triode VT1 and 1 pin of chip IC 2, the other end of resistance R1 connects the negative electrode of diode D2 and the base stage of triode VT1, the emitter of triode VT1 connects the other end of electric capacity C2, the sliding end of potentiometer RP1, a stiff end of potentiometer RP1 and 1 pin of gas sensor P1, another stiff end of potentiometer RP1 connects 2 pins of gas sensor P1, 3 pins of gas sensor P1 connect another stiff end of potentiometer RP2, the other end of the 4 pin contact resistance R2 of gas sensor P1, the sliding end of potentiometer RP2 connects the anode of diode D3, the negative electrode of diode D3 connects the other end of electric capacity C3 and 2 pins of chip IC 2, 4 pins of chip IC 2 connect the negative electrode of diode D4 and the other end of relay J.
2. a kind of smoking warning circuit for public place according to claim 1, is characterized in that, described chip IC 1 is 7805 three terminal regulators, and chip IC 2 is TWH8778 type power switch circuit.
3. a kind of smoking warning circuit for public place according to claim 1, it is characterized in that, 220V voltage is become 12V voltage by winding N1 and N2 of described transformer W.
4. a kind of smoking warning circuit for public place according to claim 1, is characterized in that, the model of described gas sensor P1 is QM-N5.
5. a kind of smoking warning circuit for public place according to claim 1, it is characterized in that, described diode D2 is light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520257116.3U CN204719933U (en) | 2015-04-19 | 2015-04-19 | A kind of smoking warning circuit for public place |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520257116.3U CN204719933U (en) | 2015-04-19 | 2015-04-19 | A kind of smoking warning circuit for public place |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204719933U true CN204719933U (en) | 2015-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520257116.3U Expired - Fee Related CN204719933U (en) | 2015-04-19 | 2015-04-19 | A kind of smoking warning circuit for public place |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204719933U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106662354A (en) * | 2016-01-17 | 2017-05-10 | 吴鹏 | Air conditioning system with dust reduction and smoke discharge function |
-
2015
- 2015-04-19 CN CN201520257116.3U patent/CN204719933U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106662354A (en) * | 2016-01-17 | 2017-05-10 | 吴鹏 | Air conditioning system with dust reduction and smoke discharge function |
| CN106662354B (en) * | 2016-01-17 | 2019-07-26 | 青岛君邦新能源有限公司 | A kind of air-conditioning system with depositing dust smoke discharging function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20160419 |