CN205563952U - Domestic energy -conserving harmful gas detection alarm - Google Patents
Domestic energy -conserving harmful gas detection alarm Download PDFInfo
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- CN205563952U CN205563952U CN201620348024.0U CN201620348024U CN205563952U CN 205563952 U CN205563952 U CN 205563952U CN 201620348024 U CN201620348024 U CN 201620348024U CN 205563952 U CN205563952 U CN 205563952U
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Abstract
The utility model discloses a domestic energy -conserving harmful gas detection alarm, including relay K, unidirectional thyristor Q1, chip IC1 and loudspeaker B, connect VCC, relay K's contact K of unidirectional thyristor Q1's positive pole 1 with chip IC1's pin 1, unidirectional thyristor Q1's negative pole connecting resistance R3 and chip IC2's pin 1, relay K and chip IC2's 7 relay K's of pin other end connection electric capacity C1, electric capacity C2 and chip IC3's pin 1 is connected to resistance R3's the other end. The utility model discloses domestic energy -conserving harmful gas detection alarm simple structure, components and parts are few, utilize gaseous detected signal and unidirectional thyristor to combine together for whole circuit is power consumptive hardly when static state, sends when meetting harmful gas to last the chimes of doom, consequently has long service life, controls advantage accurate and convenient to use.
Description
Technical field
The utility model relates to a kind of alarm, specifically a kind of domestic energy-saving harmful gas detection, alarm device.
Background technology
Family kitchen uses coal gas now.Coal gas is with the solid material such as coal or coke, prepares through destructive distillation or vaporization, and its main component has carbon monoxide, methane and hydrogen etc.；Coal gas is poisonous, it is easy to form explosive mixture in atmosphere, should cause hig diligence during use.Therefore there is serious potential safety hazard in kitchen gas leak, jeopardize the security of the lives and property of people, the most function singleness of the most common gas leakage alarm device, its when static state whole circuit all in electriferous state, the battery needs within this kind of alarm are caused often to be changed, not only cause waste, and dry cell exists pollution greatly to soil and water quality.
Utility model content
The purpose of this utility model is to provide a kind of domestic energy-saving harmful gas detection, alarm device, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the following technical scheme of the utility model offer:
nullA kind of domestic energy-saving harmful gas detection, alarm device，Including relay K、Unidirectional thyristor Q1、Chip IC 1 and loudspeaker B，The anode of described unidirectional thyristor Q1 connects power supply VCC、The contact K-1 of relay K and the pin 1 of chip IC 1，The negative electrode of unidirectional thyristor Q1 connects resistance R3 and the pin 1 of chip IC 2，The other end of resistance R3 connects the other end of pin 7 relay K of relay K and chip IC 2 and connects electric capacity C1、The pin 1 of electric capacity C2 and chip IC 3，The pin 3 of chip IC 2 connects the pin 4 of chip IC 3，The other end of electric capacity C1 connects resistance R1、The pin 2 of chip IC 3 and the pin 6 of chip IC 3，The other end of electric capacity C2 connects the pin 5 of chip IC 3，The other end of resistance R1 connects resistance R2 and the pin 7 of chip IC 3，The other end of resistance R2 connects loudspeaker B、The contact K-1 of relay K and the pin 8 of chip IC 3，The pin 3 of chip IC 3 connects electric capacity C3，The other end of electric capacity C3 connects resistance R4，The other end of resistance R4 connects the other end of loudspeaker B，Unidirectional thyristor Q1 controls the sliding end that pole connects potentiometer RP1，One of potentiometer RP1 fixing end ground connection，Another fixing end of potentiometer RP1 connects the pin 1 of chip IC 4，The pin 2 of chip IC 4 connects the pin 3 of chip IC 4 and the pin 2 of chip IC 1，The pin 4 of chip IC 4 connects pin 3 ground connection of chip IC 1，The model of described chip IC 1 is LM7805，The model of chip IC 2 is 4071，The model of chip IC 3 is NE555，The model of chip IC 4 is QM-N5.
As preferred version of the present utility model: described relay K is normally opened contact relay.
Compared with prior art, the beneficial effects of the utility model are: the utility model domestic energy-saving harmful gas detection, alarm device simple in construction, components and parts are few, gas detection signals and unidirectional thyristor is utilized to combine, make the power consumption hardly when static state of whole circuit, send lasting chimes of doom when running into pernicious gas, therefore there is length in service life, control advantage accurate and easy to use.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of domestic energy-saving harmful gas detection, alarm device.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the utility model rather than whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of the utility model protection.
nullRefer to Fig. 1，A kind of domestic energy-saving harmful gas detection, alarm device，Including relay K、Unidirectional thyristor Q1、Chip IC 1 and loudspeaker B，The anode of described unidirectional thyristor Q1 connects power supply VCC、The contact K-1 of relay K and the pin 1 of chip IC 1，The negative electrode of unidirectional thyristor Q1 connects resistance R3 and the pin 1 of chip IC 2，The other end of resistance R3 connects the other end of pin 7 relay K of relay K and chip IC 2 and connects electric capacity C1、The pin 1 of electric capacity C2 and chip IC 3，The pin 3 of chip IC 2 connects the pin 4 of chip IC 3，The other end of electric capacity C1 connects resistance R1、The pin 2 of chip IC 3 and the pin 6 of chip IC 3，The other end of electric capacity C2 connects the pin 5 of chip IC 3，The other end of resistance R1 connects resistance R2 and the pin 7 of chip IC 3，The other end of resistance R2 connects loudspeaker B、The contact K-1 of relay K and the pin 8 of chip IC 3，The pin 3 of chip IC 3 connects electric capacity C3，The other end of electric capacity C3 connects resistance R4，The other end of resistance R4 connects the other end of loudspeaker B，Unidirectional thyristor Q1 controls the sliding end that pole connects potentiometer RP1，One of potentiometer RP1 fixing end ground connection，Another fixing end of potentiometer RP1 connects the pin 1 of chip IC 4，The pin 2 of chip IC 4 connects the pin 3 of chip IC 4 and the pin 2 of chip IC 1，The pin 4 of chip IC 4 connects pin 3 ground connection of chip IC 1，The model of described chip IC 1 is LM7805，The model of chip IC 2 is 4071，The model of chip IC 3 is NE555，The model of chip IC 4 is QM-N5.
Relay K is normally opened contact relay.
nullOperation principle of the present utility model is: the core parts of circuit are that poisonous gas detects sensor IC 4，Its model is TGS812，Its 1 pin connects potentiometer RP1，Detection sensitivity can be regulated easily by the value of regulation potentiometer RP1，Under normal circumstances，Chip IC 4 internal 1、Resistance value between 2 pin is higher，When pernicious gas being detected，Its internal resistance reduces with detectable concentration，And then change the control pole tension accessing unidirectional thyristor Q1，When it reaches warning critical value，The control pole tension of unidirectional thyristor Q1 reaches its conducting voltage，Unidirectional thyristor Q1 turns on，3 pin output high level of chip IC 2，Relay K obtains electric simultaneously，The K-1 adhesive of its normally opened contact，Chip IC 3 obtains electric，Chip IC 3 and peripheral cell composition pierce circuit thereof，Its 3 pin output oscillator signal，Chimes of doom is sent through electric capacity C3 and resistance R4 rear drive loudspeaker B.
Claims (2)
- null1. a domestic energy-saving harmful gas detection, alarm device，Including relay K、Unidirectional thyristor Q1、Chip IC 1 and loudspeaker B，It is characterized in that，The anode of described unidirectional thyristor Q1 connects power supply VCC、The contact K-1 of relay K and the pin 1 of chip IC 1，The negative electrode of unidirectional thyristor Q1 connects resistance R3 and the pin 1 of chip IC 2，The other end of resistance R3 connects the other end of pin 7 relay K of relay K and chip IC 2 and connects electric capacity C1、The pin 1 of electric capacity C2 and chip IC 3，The pin 3 of chip IC 2 connects the pin 4 of chip IC 3，The other end of electric capacity C1 connects resistance R1、The pin 2 of chip IC 3 and the pin 6 of chip IC 3，The other end of electric capacity C2 connects the pin 5 of chip IC 3，The other end of resistance R1 connects resistance R2 and the pin 7 of chip IC 3，The other end of resistance R2 connects loudspeaker B、The contact K-1 of relay K and the pin 8 of chip IC 3，The pin 3 of chip IC 3 connects electric capacity C3，The other end of electric capacity C3 connects resistance R4，The other end of resistance R4 connects the other end of loudspeaker B，Unidirectional thyristor Q1 controls the sliding end that pole connects potentiometer RP1，One of potentiometer RP1 fixing end ground connection，Another fixing end of potentiometer RP1 connects the pin 1 of chip IC 4，The pin 2 of chip IC 4 connects the pin 3 of chip IC 4 and the pin 2 of chip IC 1，The pin 4 of chip IC 4 connects pin 3 ground connection of chip IC 1，The model of described chip IC 1 is LM7805，The model of chip IC 2 is 4071，The model of chip IC 3 is NE555，The model of chip IC 4 is QM-N5.
- A kind of domestic energy-saving harmful gas detection, alarm device the most according to claim 1, it is characterised in that described relay K is normally opened contact relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620348024.0U CN205563952U (en) | 2016-04-21 | 2016-04-21 | Domestic energy -conserving harmful gas detection alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620348024.0U CN205563952U (en) | 2016-04-21 | 2016-04-21 | Domestic energy -conserving harmful gas detection alarm |
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| Publication Number | Publication Date |
|---|---|
| CN205563952U true CN205563952U (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620348024.0U Expired - Fee Related CN205563952U (en) | 2016-04-21 | 2016-04-21 | Domestic energy -conserving harmful gas detection alarm |
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| CN (1) | CN205563952U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106408840A (en) * | 2016-09-27 | 2017-02-15 | 北海益生源农贸有限责任公司 | Intelligent fire-fighting alarm management system |
| CN110161180A (en) * | 2018-03-29 | 2019-08-23 | 浙江中越检测技术服务有限公司 | A kind of pH value detection warning circuit for chemical products |
-
2016
- 2016-04-21 CN CN201620348024.0U patent/CN205563952U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106408840A (en) * | 2016-09-27 | 2017-02-15 | 北海益生源农贸有限责任公司 | Intelligent fire-fighting alarm management system |
| CN110161180A (en) * | 2018-03-29 | 2019-08-23 | 浙江中越检测技术服务有限公司 | A kind of pH value detection warning circuit for chemical products |
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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: 20160907 Termination date: 20170421 |