CN207352751U - A kind of detection alarm for being used for flammable toxic gas in environment - Google Patents
A kind of detection alarm for being used for flammable toxic gas in environment Download PDFInfo
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- CN207352751U CN207352751U CN201721436877.0U CN201721436877U CN207352751U CN 207352751 U CN207352751 U CN 207352751U CN 201721436877 U CN201721436877 U CN 201721436877U CN 207352751 U CN207352751 U CN 207352751U
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- storage battery
- cathode
- transistor
- detection alarm
- toxic gas
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses a kind of detection alarm for being used for flammable toxic gas in environment, including storage battery G1, gas sensor K1, speech chip U1, loudspeaker M1, the cathode of the storage battery G1 is in series with switch S1, the cathode of the storage battery G1 positive voltage terminal with gas sensor K1 respectively, the positive voltage terminal of speech chip U1, one end of loudspeaker M1 is connected, the cathode of the storage battery G1 is also connected with the A terminals of gas sensor K1, the negative voltage side of the gas sensor K1 is connected by resistance R1 with the anode of storage battery G1, the anode of the storage battery G1 is connected to the ground, the B terminals of gas sensor K1 one end with slide rheostat RP1 respectively, one end of capacitance C1, one end of resistance R2 is connected.The utility model non-processor, is made up of analog circuit, excessive in the flammable concentration of toxic gases of environment, sends alarm.
Description
Technical field
It the utility model is related to electronic circuit technology field, and in particular to a kind of to be used for flammable toxic gas in environment
Detect alarm.
Background technology
In the production environment of industry or kitchen, easily there is flammable toxic gas, it is necessary to timely detect, with
Just user is reminded, is taken measures in time, ensures the body detection of user.At present, the detection device of toxic gas on the market, electricity
Road is complicated, and production cost is high, is not easy to produce in batches, limits its use scope.
Utility model content
The purpose of the utility model is to overcome the detection device of existing toxic gas, and circuit is complicated, and production cost is high, no
The problem of easy to produce in batches.The detection alarm for being used for flammable toxic gas in environment of the utility model, non-processor,
It is made up of analog circuit, it is excessive in the flammable concentration of toxic gases of environment, when harmful to human is safe, alarm is sent,
Circuit is simple, easy to implement, of low cost, and easy to produce in batches, extensive use, has a good application prospect.
In order to achieve the above object, technical solution is used by the utility model：
A kind of detection alarm for being used for flammable toxic gas in environment, including storage battery G1, gas sensor K1, language
Sound chip U1, loudspeaker M1,
The cathode of the storage battery G1 is in series with switch S1, and the cathode of the storage battery G1 is respectively with gas sensor K1's
Positive voltage terminal, the positive voltage terminal of speech chip U1, one end of loudspeaker M1 are connected, the cathode of the storage battery G1 also with air-sensitive
The A terminals of sensor K1 are connected, the anode phase that the negative voltage side of the gas sensor K1 passes through resistance R1 and storage battery G1
Connection, the anode of the storage battery G1 is connected to the ground, the B terminals of the gas sensor K1 respectively with slide rheostat RP1
One end, one end, one end of resistance R2 of capacitance C1 be connected, the other end of the slide rheostat RP1 is with diode D1's
Cathode is connected, and the anode of the diode D1 is connected to the ground, and the other end of the capacitance C1 is with being connected, the resistance R2
The other end base stage with transistor T1, the cathode of capacitance C2 are connected respectively, the anode of the capacitance C2 is connected to the ground, institute
The collector for stating transistor T1 is connected with the control signal input of speech chip U1, the negative voltage side of the speech chip U1
It is connected to the ground, the control signal output of the speech chip U1 is connected with the base stage of transistor T2, the transistor T2
Collector be connected with the other end of loudspeaker M1, the transistor T1, the emitter of transistor T2 are with being connected.
A kind of foregoing detection alarm for being used for flammable toxic gas in environment, the model of the gas sensor K1
For MQK-2 gas sensors.
A kind of foregoing detection alarm for being used for flammable toxic gas in environment, the cathode of the storage battery G1 also with
The cathode of capacitance C3 is connected, and the anode of the capacitance C3 is connected to the ground.
A kind of foregoing detection alarm for being used for flammable toxic gas in environment, the model of the speech chip U1
KD9561 speech chips.
A kind of foregoing detection alarm for being used for flammable toxic gas in environment, the voltage of the storage battery G1 are
5V, the cathode of the storage battery G1 are connected with the anode of zener diode D2, cathode and the ground phase of the zener diode D2
Connection.
A kind of foregoing detection alarm for being used for flammable toxic gas in environment, the power of the loudspeaker M1 are
8W。
A kind of foregoing detection alarm for being used for flammable toxic gas in environment, the transistor T1, transistor T2
It is NPN transistor.
The beneficial effects of the utility model are：The detection alarm for being used for flammable toxic gas in environment of the utility model
Device, non-processor, is made up of analog circuit, excessive in the flammable concentration of toxic gases of environment, when harmful to human is safe,
Alarm is sent, circuit is simple, easy to implement, of low cost, easy to produce in batches, extensive use, before there is good application
Scape.
Brief description of the drawings
Fig. 1 is the structure diagram of the detection alarm for being used for flammable toxic gas in environment of the utility model.
Embodiment
Below in conjunction with Figure of description, the utility model is further described.
As shown in Figure 1, the detection alarm for being used for flammable toxic gas in environment of the utility model, including storage battery
G1, gas sensor K1, speech chip U1, loudspeaker M1,
The cathode of the storage battery G1 is in series with switch S1, and the cathode of the storage battery G1 is respectively with gas sensor K1's
Positive voltage terminal, the positive voltage terminal of speech chip U1, one end of loudspeaker M1 are connected, the cathode of the storage battery G1 also with air-sensitive
The A terminals of sensor K1 are connected, the anode phase that the negative voltage side of the gas sensor K1 passes through resistance R1 and storage battery G1
Connection, the anode of the storage battery G1 is connected to the ground, the B terminals of the gas sensor K1 respectively with slide rheostat RP1
One end, one end, one end of resistance R2 of capacitance C1 be connected, the other end of the slide rheostat RP1 is with diode D1's
Cathode is connected, and the anode of the diode D1 is connected to the ground, and the other end of the capacitance C1 is with being connected, the resistance R2
The other end base stage with transistor T1, the cathode of capacitance C2 are connected respectively, the anode of the capacitance C2 is connected to the ground, institute
The collector for stating transistor T1 is connected with the control signal input of speech chip U1, the negative voltage side of the speech chip U1
It is connected to the ground, the control signal output of the speech chip U1 is connected with the base stage of transistor T2, the transistor T2
Collector be connected with the other end of loudspeaker M1, the transistor T1, the emitter of transistor T2 are with being connected.
Preferably, the model MQK-2 gas sensors of the gas sensor K1, of low cost, detection sensitivity is high.
Preferably, cathode of the cathode of the storage battery G1 also with capacitance C3 is connected, anode and the ground of the capacitance C3
It is connected.
Preferably, the model KD9561 speech chips of the speech chip U1, it is of low cost, it is low in energy consumption, and can drive
Dynamic loudspeaker sends clear and melodious alarm.
Preferably, the voltage of the storage battery G1 is 5V, the cathode of the storage battery G1 and the anode of zener diode D2
It is connected, the cathode of the zener diode D2 is connected to the ground, and improves the stability of voltage supply.
Preferably, the power of the loudspeaker M1 is 8W.
Preferably, the transistor T1, transistor T2 are NPN transistor.
The detection alarm for being used for flammable toxic gas in environment of the utility model, operation principle are as follows：Air-sensitive passes
For sensor K1 in home, the resistance at A, B both ends is very big, and transistor T1 cut-offs, speech chip U1 do not work, at whole circuit
In inactive state；When gas sensor K touches flammable toxic gas, and concentration is excessive, A, B both ends resistance subtract rapidly
Small, the current potential rise at B ends is simultaneously charged to capacitance C2, brilliant when the charging potential on capacitance C2 reaches transistor T1 conducting current potentials
Body pipe T1 is turned on, and speech chip U1 is obtained, output drive signal, transistor T2 conductings, so that loudspeaker M1 sends alarm；
When flammable toxic gas reduces in environment, whole circuit reset；The sensitivity of gas sensor K1, can be by sliding variable resistance
Device RP1 is adjusted.
In conclusion the detection alarm for being used for flammable toxic gas in environment of the utility model, non-processor, leads to
Analog circuit composition is crossed, it is excessive in the flammable concentration of toxic gases of environment, when harmful to human is safe, alarm is sent, electricity
Road is simple, easy to implement, of low cost, and easy to produce in batches, extensive use, has a good application prospect.
The basic principle, main features and advantages of the utility model have been shown and described above.The technical staff of the industry
It should be appreciated that the present utility model is not limited to the above embodiments, the above embodiments and description only describe this
The principle of utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various change
And improvement, these various changes and improvements fall within the scope of the claimed invention.The utility model requires protection scope
It is defined by the appending claims and its equivalent thereof.
Claims (7)
- A kind of 1. detection alarm for being used for flammable toxic gas in environment, it is characterised in that：Passed including storage battery G1, air-sensitive Sensor K1, speech chip U1, loudspeaker M1,The cathode of the storage battery G1 is in series with switch S1, the cathode of the storage battery G1 positive electricity with gas sensor K1 respectively Pressure side, the positive voltage terminal of speech chip U1, one end of loudspeaker M1 are connected, the cathode of the storage battery G1 also with gas sensing The A terminals of device K1 are connected, and the negative voltage side of the gas sensor K1 is connected by resistance R1 with the anode of storage battery G1, The anode of the storage battery G1 is connected to the ground, the B terminals of the gas sensor K1 respectively with slide rheostat RP1 one End, one end of capacitance C1, one end of resistance R2 are connected, the other end of the slide rheostat RP1 and the cathode of diode D1 It is connected, the anode of the diode D1 is connected to the ground, and for the other end of the capacitance C1 with being connected, the resistance R2's is another The base stage with transistor T1, the cathode of capacitance C2 are connected respectively for one end, and the anode of the capacitance C2 is connected to the ground, the crystalline substance The collector of body pipe T1 is connected with the control signal input of speech chip U1, negative voltage side and the ground of the speech chip U1 It is connected, the control signal output of the speech chip U1 is connected with the base stage of transistor T2, the collection of the transistor T2 Electrode is connected with the other end of loudspeaker M1, and the transistor T1, the emitter of transistor T2 are with being connected.
- A kind of 2. detection alarm for being used for flammable toxic gas in environment according to claim 1, it is characterised in that： The model MQK-2 gas sensors of the gas sensor K1.
- A kind of 3. detection alarm for being used for flammable toxic gas in environment according to claim 1, it is characterised in that： Cathode of the cathode of the storage battery G1 also with capacitance C3 is connected, and the anode of the capacitance C3 is connected to the ground.
- A kind of 4. detection alarm for being used for flammable toxic gas in environment according to claim 1, it is characterised in that： The model KD9561 speech chips of the speech chip U1.
- A kind of 5. detection alarm for being used for flammable toxic gas in environment according to claim 3, it is characterised in that： The voltage of the storage battery G1 is 5V, and the cathode of the storage battery G1 is connected with the anode of zener diode D2, the voltage stabilizing The cathode of diode D2 is connected to the ground.
- A kind of 6. detection alarm for being used for flammable toxic gas in environment according to claim 1, it is characterised in that： The power of the loudspeaker M1 is 8W.
- A kind of 7. detection alarm for being used for flammable toxic gas in environment according to claim 1, it is characterised in that： The transistor T1, transistor T2 are NPN transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721436877.0U CN207352751U (en) | 2017-11-01 | 2017-11-01 | A kind of detection alarm for being used for flammable toxic gas in environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721436877.0U CN207352751U (en) | 2017-11-01 | 2017-11-01 | A kind of detection alarm for being used for flammable toxic gas in environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207352751U true CN207352751U (en) | 2018-05-11 |
Family
ID=62354014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721436877.0U Expired - Fee Related CN207352751U (en) | 2017-11-01 | 2017-11-01 | A kind of detection alarm for being used for flammable toxic gas in environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207352751U (en) |
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2017
- 2017-11-01 CN CN201721436877.0U patent/CN207352751U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181213 Address after: Unit 337, B07 Floor, 199 Renai Road, Suzhou Industrial Park, Jiangsu Province, 215123 Patentee after: SUZHOU REMEDI ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Address before: 212011 No. 3 Tieta Road, Guyang Town, Dantu District, Zhenjiang City, Jiangsu Province Patentee before: Zhenjiang Nuobang Environmental Technology Co. Ltd. |
|
| 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: 20180511 Termination date: 20201101 |