CN205194023U - Be applied to CO detection module of security against fire - Google Patents
Be applied to CO detection module of security against fire Download PDFInfo
- Publication number
- CN205194023U CN205194023U CN201520956467.3U CN201520956467U CN205194023U CN 205194023 U CN205194023 U CN 205194023U CN 201520956467 U CN201520956467 U CN 201520956467U CN 205194023 U CN205194023 U CN 205194023U
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Abstract
The utility model discloses a be applied to CO detection module of security against fire, including CO sensor U1, resistance R1, electric capacity C1, field effect transistor VS, U3 is put to fortune and U2 is put to fortune, CO sensor U1 pin C connects electric capacity C1 respectively and the U3 output is put to fortune, CO sensor U1 pin R difference connecting resistance R5 and field effect transistor VS's the D utmost point and resistance R5, the electric capacity C1 other end and resistance R6 are connected respectively to the resistance R5 other end, U3 inverting terminal is put to resistance R6 other end connection fortune, U3 homophase end connection ground resistance R7 is put to fortune, CO sensor U1 pin W and resistance R4 are connected respectively to field effect transistor VS's the S utmost point, and field effect transistor VS's G is extremely through the resistance R3 VCC that connects. The utility model discloses be applied to CO detection module of security against fire send the entry control ware after can handling the signal that CO sensor U1 detected again, and circuit structure is simple, and is with low costs, small, life -span of can greatly increased using the alarm control ware of this module, steadiment.
Description
Technical field
The utility model relates to a kind of CO detection module, specifically a kind of CO detection module being applied to security against fire.
Background technology
Specify according to existing security against fire, fire alarm system is the basic fire fighting device of buildings indispensability, and arranging fire alarm system can effectively prevent the generation of fire and spread, and plays the vital role of protection people life property safety.
And in the family, coal gas uses very general, and containing a large amount of carbon monoxide in coal gas, once gas leak, be very easy to blasting property fire.
CO alarm is all equipped with in existing a lot of home-use security against fire alarm, but most CO alarm is all very simple for the process of CO detection signal, directly the detection signal of sensor is sent in controller, the problem causing accuracy of detection lower on the one hand, also make system stability low on the other hand, serviceable life is short.
Utility model content
The purpose of this utility model is to provide a kind of CO detection module being applied to security against fire, 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 CO detection module being applied to security against fire, comprise CO sensor U1, resistance R1, electric capacity C1, field effect transistor VS, amplifier U3 and amplifier U2, CO sensor U1 pin C connects electric capacity C1 and amplifier U3 output terminal respectively, the D pole of CO sensor U1 pin R difference contact resistance R5 and field effect transistor VS and resistance R5, the resistance R5 other end connects the electric capacity C1 other end and resistance R6 respectively, the resistance R6 other end connects amplifier U3 end of oppisite phase, amplifier U3 in-phase end connects stake resistance R7, the S pole of described field effect transistor VS connects CO sensor U1 pin W and resistance R4 respectively, the G pole of field effect transistor VS connects power supply VCC by resistance R3, the resistance R4 other end is contact resistance R1 respectively, electric capacity C2 and amplifier U2 end of oppisite phase, amplifier U2 in-phase end connects stake resistance R2, amplifier U2 output terminal is the contact resistance R1 other end respectively, the electric capacity C2 other end and resistance R3, the resistance R3 other end connects direct earth capacitance C3 and output end vo respectively.
As further program of the utility model: described power supply VCC voltage is 3.3V.
As further program of the utility model: described CO sensor U1 adopts electrochemical element ME3-CO.
As the utility model further scheme: described amplifier U2 and amplifier U3 all adopts AD8572.
Compared with prior art, the beneficial effects of the utility model are: send into controller again after the signal that the CO detection module that the utility model is applied to security against fire can detect CO sensor U1 processes, circuit structure is simple, cost is low, volume is little, greatly can increase the life-span of the alarm controller using this module, increase stability.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the CO detection module being applied to security against fire.
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, in the utility model embodiment, a kind of CO detection module being applied to security against fire, comprise CO sensor U1, resistance R1, electric capacity C1, field effect transistor VS, amplifier U3 and amplifier U2, CO sensor U1 pin C connects electric capacity C1 and amplifier U3 output terminal respectively, the D pole of CO sensor U1 pin R difference contact resistance R5 and field effect transistor VS and resistance R5, the resistance R5 other end connects the electric capacity C1 other end and resistance R6 respectively, the resistance R6 other end connects amplifier U3 end of oppisite phase, amplifier U3 in-phase end connects stake resistance R7, the S pole of described field effect transistor VS connects CO sensor U1 pin W and resistance R4 respectively, the G pole of field effect transistor VS connects power supply VCC by resistance R3, the resistance R4 other end is contact resistance R1 respectively, electric capacity C2 and amplifier U2 end of oppisite phase, amplifier U2 in-phase end connects stake resistance R2, amplifier U2 output terminal is the contact resistance R1 other end respectively, the electric capacity C2 other end and resistance R3, the resistance R3 other end connects direct earth capacitance C3 and output end vo respectively, power supply VCC voltage is 3.3V, CO sensor U1 adopts electrochemical element ME3-CO, described amplifier U2 and amplifier U3 all adopts AD8572.
Principle of work of the present utility model is: refer to Fig. 1, C0 detects and adopts electrochemical element ME3-CO, this element obtains the low current signal be directly proportional to C0 gas concentration, this signal just can be delivered to outside and carry out A/D conversion after must nursing one's health, wherein U3, R5 ~ R7, C1 forms constant potential circuit, make C, R bipod of U1 and and W pin between current potential keep constant; U2, R1, C2 form signal amplification circuit, be used for the electric current produced when detecting gas electrolysis in CO sensor U1, the feeble signal of sensor is amplified, and there is low-pass filtering function, can high-frequency interferencing signal in filtering detection signal, detection signal after amplification is input to outside A/D converter by output end vo and carries out AD conversion, then delivers to outside controller.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this instructions is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of instructions is only for clarity sake, those skilled in the art should by instructions integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (4)
1. one kind is applied to the CO detection module of security against fire, comprise CO sensor U1, resistance R1, electric capacity C1, field effect transistor VS, amplifier U3 and amplifier U2, it is characterized in that, CO sensor U1 pin C connects electric capacity C1 and amplifier U3 output terminal respectively, the D pole of CO sensor U1 pin R difference contact resistance R5 and field effect transistor VS and resistance R5, the resistance R5 other end connects the electric capacity C1 other end and resistance R6 respectively, the resistance R6 other end connects amplifier U3 end of oppisite phase, amplifier U3 in-phase end connects stake resistance R7, the S pole of described field effect transistor VS connects CO sensor U1 pin W and resistance R4 respectively, the G pole of field effect transistor VS connects power supply VCC by resistance R3, the resistance R4 other end is contact resistance R1 respectively, electric capacity C2 and amplifier U2 end of oppisite phase, amplifier U2 in-phase end connects stake resistance R2, amplifier U2 output terminal is the contact resistance R1 other end respectively, the electric capacity C2 other end and resistance R3, the resistance R3 other end connects direct earth capacitance C3 and output end vo respectively.
2. the CO detection module being applied to security against fire according to claim 1, is characterized in that, described power supply VCC voltage is 3.3V.
3. the CO detection module being applied to security against fire according to claim 1, is characterized in that, described CO sensor U1 adopts electrochemical element ME3-CO.
4. the CO detection module being applied to security against fire according to claim 1, it is characterized in that, described amplifier U2 and amplifier U3 all adopts AD8572.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520956467.3U CN205194023U (en) | 2015-11-26 | 2015-11-26 | Be applied to CO detection module of security against fire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520956467.3U CN205194023U (en) | 2015-11-26 | 2015-11-26 | Be applied to CO detection module of security against fire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205194023U true CN205194023U (en) | 2016-04-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520956467.3U Expired - Fee Related CN205194023U (en) | 2015-11-26 | 2015-11-26 | Be applied to CO detection module of security against fire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205194023U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105354995A (en) * | 2015-11-26 | 2016-02-24 | 兴化市成顺消防科技研究院有限公司 | CO detection module applied to fire-fighting safety |
| CN113250813A (en) * | 2021-06-23 | 2021-08-13 | 绍兴毅诚电机有限公司 | CO alarm for super capacitive generator |
-
2015
- 2015-11-26 CN CN201520956467.3U patent/CN205194023U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105354995A (en) * | 2015-11-26 | 2016-02-24 | 兴化市成顺消防科技研究院有限公司 | CO detection module applied to fire-fighting safety |
| CN113250813A (en) * | 2021-06-23 | 2021-08-13 | 绍兴毅诚电机有限公司 | CO alarm for super capacitive generator |
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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: 20160427 Termination date: 20161126 |