CN207635540U - A kind of gas leakage automatic exhausting device - Google Patents
A kind of gas leakage automatic exhausting device Download PDFInfo
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- CN207635540U CN207635540U CN201720916549.4U CN201720916549U CN207635540U CN 207635540 U CN207635540 U CN 207635540U CN 201720916549 U CN201720916549 U CN 201720916549U CN 207635540 U CN207635540 U CN 207635540U
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Abstract
The utility model discloses a kind of gas leakage automatic exhausting devices, including battery, gas sensor, first resistor, second resistance, 3rd resistor, the 4th resistance, the first capacitance, the second capacitance, potentiometer, triode, relay, diode, light emitting diode, audio chip and loud speaker, compared with prior art, the utility model is in the case where automatically detecting gas leakage, exhaust system can be automatically opened, carry out air draft, it is practical and convenient, safety coefficient is improved, is had the value of popularization and application.
Description
Technical field
The utility model is related to electronic technology field more particularly to a kind of gas leakage automatic exhausting devices.
Background technology
Combustion gas is the general name of gaseous fuel, it can burn and release heat, is used for city dweller and industrial enterprise.Combustion gas
Type it is very much, mainly have natural gas, manufactured gas, manufactured fuel gas, liquefied petroleum gas and biogas, coal gas.In the prior art, gas leakage
Can lead to safety accident, if once finding gas leakage, keep ventilation be it is best, therefore, it is necessary to be improved with
Innovation.
Utility model content
The purpose of this utility model is that solve the above-mentioned problems and provides a kind of gas leakage automatic exhausting device.
The utility model is achieved through the following technical solutions above-mentioned purpose：
The utility model includes battery, gas sensor, first resistor, second resistance, 3rd resistor, the 4th resistance,
One capacitance, the second capacitance, potentiometer, triode, relay, diode, light emitting diode, audio chip and loud speaker, battery
For 12V, gas sensor model QM-171N, first resistor be 3.3k Ω, second resistance is 15k Ω, 3rd resistor 3.6k
Ω, the 4th resistance are 2k Ω, the first capacitance is 10uF, the second capacitance is 1000pF, potentiometer is 10k Ω, triode model
3DG9011, relay model JRX-13F type 12V DCs relay, diode model IN4001, light emitting diode model
It it is 8 ohm for BT112/X, audio chip model STCHIP, loud speaker internal resistance.The anode while and gas sensing of the battery
The collector and audio chip of the first end of heating wire, the first end of the first capacitance, the control terminal of audio chip, triode in device
Cathode power supply end connection, the cathode of the battery simultaneously with the first end of first resistor, the first end of relay, diode
Anode, the anode of light emitting diode, the first end of potentiometer, the first end of the second capacitance, the first end of loud speaker and third electricity
The first end of resistance connects, and the second end of the second end and first resistor of heater strip connects in gas sensor, gas sensor
First end is connect with the second end of the first capacitance, and the second end of gas sensor and the second end of potentiometer connect, potentiometer
Sliding end is connect with the base stage of the second end of the second capacitance and triode simultaneously, the emitter of triode and the first of second resistance
The second end of end connection, second resistance is connect with the reset terminal of the second end of 3rd resistor and audio chip simultaneously, loud speaker
The audio output of second end and audio chip connects, the control signal output of audio chip while first with the 4th resistance
End, the cathode of diode are connected with the second end of relay, and the second end of the 4th resistance and the cathode of light emitting diode connect.
The beneficial effects of the utility model are：
The utility model is a kind of gas leakage automatic exhausting device, and compared with prior art, the utility model is automatic
In the case of detecting gas leakage, exhaust system can be automatically opened, carries out air draft, it is practical and convenient, improve safety coefficient, tool
There is the value of popularization and application.
Description of the drawings
Fig. 1 is the circuit structure schematic diagram of the utility model.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1：The utility model includes battery E, gas sensor Q, first resistor R1, second resistance R2, third
Resistance R3, the 4th resistance R4, the first capacitance C1, the second capacitance C2, potentiometer W, triode VT, relay J, diode VD, hair
Optical diode LED, audio chip IC and loud speaker BL, battery 12V, gas sensor model QM-171N, first resistor
It is 15k Ω for 3.3k Ω, second resistance, 3rd resistor is 3.6k Ω, the 4th resistance is 2k Ω, the first capacitance is 10uF, second
Capacitance is 1000pF, potentiometer is 10k Ω, triode model 3DG9011, relay model JRX-13F type 12V DCs
Relay, diode model IN4001, light emitting diode model are BT112/X, audio chip model STCHIP, loud speaker
Internal resistance is 8 ohm.The anode of the battery E simultaneously with the first end of heating wire in gas sensor Q, the first capacitance C1 first
End, the collector of the control terminal of audio chip IC, triode VT are connected with the cathode power supply end of audio chip IC, the battery E
Cathode simultaneously with the first end of first resistor R1, the first end of relay J, the anode of diode VD, Light-emitting diode LED
Anode, the first end of potentiometer RP, the first end of the second capacitance C2, the first end of loud speaker BL and 3rd resistor R3 first
End connects, and the second end of heater strip is connect with the second end of first resistor R1 in gas sensor Q, and the first of gas sensor Q
End is connect with the second end of the first capacitance C1, and the second end of gas sensor Q is connect with the second end of potentiometer RP, potentiometer
The sliding end of RP is connect with the base stage of the second end of the second capacitance C2 and triode VT simultaneously, the emitter of triode VT and the
The first end of two resistance R2 connects, the second end of second resistance R2 simultaneously with the second end of 3rd resistor R3 and audio chip IC
Reset terminal connects, and the second end of loud speaker BL is connect with the audio output of audio chip IC, the control signal of audio chip IC
Output end is connect with the second end of the first end of the 4th resistance R4, the cathode of diode VD and relay J simultaneously, the 4th resistance
The second end of R4 and the cathode of Light-emitting diode LED connect.
The operation principle of the utility model is as follows：
When gas sensor Q detects pernicious gas, the conductivity of measuring electrode increases rapidly, and makes potentiometer W two
Terminal voltage drop increases.The voltage adds to audio chip IC's after the delay circuit of second resistance R2 and third capacitance C3 compositions
Control terminal, when reaching the enabling voltage 1.6V of audio chip IC, " switch " is closed inside audio chip IC, and loud speaker BL obtains electric
Sounding；At the same time, relay J obtains trigger current conducting through current-limiting resistance, makes the row being connected on relay J control switches
Fan electromotor obtains electric operation.
The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (1)
1. a kind of gas leakage automatic exhausting device, it is characterised in that：Including battery, gas sensor, first resistor, the second electricity
Resistance, 3rd resistor, the 4th resistance, the first capacitance, the second capacitance, potentiometer, triode, relay, diode, light-emitting diodes
Pipe, audio chip and loud speaker, battery 12V, gas sensor model QM-171N, first resistor be 3.3k Ω, the second electricity
Resistance is 15k Ω, 3rd resistor is 3.6k Ω, the 4th resistance is 2k Ω, the first capacitance is 10uF, the second capacitance is 1000pF, electricity
Position device is 10k Ω, triode model 3DG9011, relay model JRX-13F type 12V DCs relay, diode model
For IN4001, light emitting diode model be BT112/X, audio chip model STCHIP, loud speaker internal resistance are 8 ohm；It is described
The anode of battery simultaneously with the first end of heating wire in gas sensor, the first end of the first capacitance, the control terminal of audio chip,
The collector of triode is connected with the cathode power supply end of audio chip, the cathode of the battery while first with first resistor
End, the first end of relay, the anode of diode, the anode of light emitting diode, the first end of potentiometer, the second capacitance first
End, the first end of loud speaker are connected with the first end of 3rd resistor, the second end and first resistor of heater strip in gas sensor
Second end connection, the first end of gas sensor connect with the second end of the first capacitance, the second end of gas sensor and electric
The second end connection of position device, the sliding end of potentiometer are connect with the base stage of the second end of the second capacitance and triode simultaneously, three poles
The emitter of pipe and the first end of second resistance connect, the second end of second resistance while second end and audio with 3rd resistor
The reset terminal of chip connects, and the second end of loud speaker and the audio output of audio chip connect, the control signal of audio chip
Output end is connect with the first end of the 4th resistance, the cathode of diode and the second end of relay simultaneously, and the second of the 4th resistance
End is connect with the cathode of light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720916549.4U CN207635540U (en) | 2017-07-26 | 2017-07-26 | A kind of gas leakage automatic exhausting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720916549.4U CN207635540U (en) | 2017-07-26 | 2017-07-26 | A kind of gas leakage automatic exhausting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207635540U true CN207635540U (en) | 2018-07-20 |
Family
ID=62861195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720916549.4U Active CN207635540U (en) | 2017-07-26 | 2017-07-26 | A kind of gas leakage automatic exhausting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207635540U (en) |
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2017
- 2017-07-26 CN CN201720916549.4U patent/CN207635540U/en active Active
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