CN204596061U - A kind of temperature-sensitive alarm control circuit - Google Patents
A kind of temperature-sensitive alarm control circuit Download PDFInfo
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- CN204596061U CN204596061U CN201520320368.6U CN201520320368U CN204596061U CN 204596061 U CN204596061 U CN 204596061U CN 201520320368 U CN201520320368 U CN 201520320368U CN 204596061 U CN204596061 U CN 204596061U
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- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of temperature-sensitive alarm control circuit, comprise chip U1, resistance R1, electric capacity C1, triode VT1, thermistor RV, diode D1, loudspeaker B and relay J, described triode VT1 emitter connects power supply VCC, direct earth capacitance C5, resistance R2, thermistor RV and chip U1 pin 8 respectively, the chip U1 pin 7 respectively contact resistance R2 other end and resistance R3, the resistance R3 other end connects chip U1 pin 2, chip U1 pin 6 and electric capacity C4 respectively.The utility model temperature-sensitive alarm control circuit uses chip NE555, can not exceed setting value alarm in temperature, and also cut off related load by relay, security is very high, and circuit structure is simple, and cost is low, is applicable to very much promoting the use of.
Description
Technical field
The utility model relates to a kind of control circuit, specifically a kind of temperature-sensitive alarm control circuit.
Background technology
Along with development in science and technology, the life of people is more and more intelligent, and sensor is as the indispensable sensing element of Based Intelligent Control, the research of the use of sensor is not all stopped always, and thermistor is as relatively conventional temperature sensor, especially the emphasis always studied of people, how to use thermistor, reduce circuit cost, reducing volume, is the direction that people study.
Utility model content
The purpose of this utility model is the temperature-sensitive alarm control circuit providing a kind of cost low, 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 temperature-sensitive alarm control circuit, comprises chip U1, resistance R1, electric capacity C1, triode VT1, thermistor RV, diode D1, loudspeaker B and relay J, described triode VT1 emitter connects power supply VCC respectively, direct earth capacitance C5, resistance R2, thermistor RV and chip U1 pin 8, chip U1 pin 7 respectively the contact resistance R2 other end and resistance R3, the resistance R3 other end connect chip U1 pin 2 respectively, chip U1 pin 6 and electric capacity C4, the electric capacity C4 other end connects electric capacity C1 respectively, resistance R1, electric capacity C2, chip U1 pin 1, relay J coil, diode D2 positive pole and electric capacity C3 ground connection, chip U1 pin 4 is the contact resistance R1 other end respectively, the electric capacity C1 other end and the thermistor RV other end, chip U1 pin 5 connects the electric capacity C2 other end, chip U1 pin 3 connects hummer B, the hummer B other end connects the electric capacity C3 other end and diode D1 positive pole respectively, diode D1 negative pole is by resistance R4 connecting triode VT1 base stage, and triode VT1 collector connects the relay J coil other end and diode D2 negative pole respectively.
As further program of the utility model: described chip U1 model is NE555.
As the utility model further scheme: described power supply VCC voltage is 10V.
Compared with prior art, the beneficial effects of the utility model are: the utility model temperature-sensitive alarm control circuit uses chip NE555, setting value alarm can not be exceeded in temperature, also cut off related load by relay, security is very high, and circuit structure is simple, cost is low, is applicable to very much promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of temperature-sensitive alarm control circuit.
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 temperature-sensitive alarm control circuit, comprises chip U1, resistance R1, electric capacity C1, triode VT1, thermistor RV, diode D1, loudspeaker B and relay J, described triode VT1 emitter connects power supply VCC respectively, direct earth capacitance C5, resistance R2, thermistor RV and chip U1 pin 8, chip U1 pin 7 respectively the contact resistance R2 other end and resistance R3, the resistance R3 other end connect chip U1 pin 2 respectively, chip U1 pin 6 and electric capacity C4, the electric capacity C4 other end connects electric capacity C1 respectively, resistance R1, electric capacity C2, chip U1 pin 1, relay J coil, diode D2 positive pole and electric capacity C3 ground connection, chip U1 pin 4 is the contact resistance R1 other end respectively, the electric capacity C1 other end and the thermistor RV other end, chip U1 pin 5 connects the electric capacity C2 other end, chip U1 pin 3 connects hummer B, the hummer B other end connects the electric capacity C3 other end and diode D1 positive pole respectively, diode D1 negative pole is by resistance R4 connecting triode VT1 base stage, and triode VT1 collector connects the relay J coil other end and diode D2 negative pole respectively.
Chip U1 model is NE555.
Power supply VCC voltage is 10V.
Principle of work of the present utility model is: refer to Fig. 1, chip U1 and peripheral cell thereof form controlled multivibrator, chip U1 pin 4 is forced resetting end, when this some position is lower than 0.7V, chip U1 is forced to reset, chip U1 pin 3 is in low level, thermistor RV raises with temperature, resistance declines, when making chip U1 pin 4 positions higher than 1V, chip U1 is in oscillatory regime, hummer B sounding alarm, there is the smooth voltage of nearly 6V electric capacity C2 upper end, diode D1 ends, triode VT1 ends, relay J discharges, the cut-off power supply of related load, along with the lengthening of time, when thermistor RV resistance increases, chip U1 pin 4 is in low level, chip U1 resets, diode D1 conducting, triode VT1 conducting, relay J adhesive, related load obtains electric operation.
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 (3)
1. a temperature-sensitive alarm control circuit, comprises chip U1, resistance R1, electric capacity C1, triode VT1, thermistor RV, diode D1, loudspeaker B and relay J, is characterized in that, described triode VT1 emitter connects power supply VCC respectively, direct earth capacitance C5, resistance R2, thermistor RV and chip U1 pin 8, chip U1 pin 7 respectively the contact resistance R2 other end and resistance R3, the resistance R3 other end connect chip U1 pin 2 respectively, chip U1 pin 6 and electric capacity C4, the electric capacity C4 other end connects electric capacity C1 respectively, resistance R1, electric capacity C2, chip U1 pin 1, relay J coil, diode D2 positive pole and electric capacity C3 ground connection, chip U1 pin 4 is the contact resistance R1 other end respectively, the electric capacity C1 other end and the thermistor RV other end, chip U1 pin 5 connects the electric capacity C2 other end, chip U1 pin 3 connects hummer B, the hummer B other end connects the electric capacity C3 other end and diode D1 positive pole respectively, diode D1 negative pole is by resistance R4 connecting triode VT1 base stage, and triode VT1 collector connects the relay J coil other end and diode D2 negative pole respectively.
2. temperature-sensitive alarm control circuit according to claim 1, is characterized in that, described chip U1 model is NE555.
3. temperature-sensitive alarm control circuit according to claim 1, is characterized in that, described power supply VCC voltage is 10V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520320368.6U CN204596061U (en) | 2015-05-15 | 2015-05-15 | A kind of temperature-sensitive alarm control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520320368.6U CN204596061U (en) | 2015-05-15 | 2015-05-15 | A kind of temperature-sensitive alarm control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204596061U true CN204596061U (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520320368.6U Expired - Fee Related CN204596061U (en) | 2015-05-15 | 2015-05-15 | A kind of temperature-sensitive alarm control circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN204596061U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106097634A (en) * | 2016-08-28 | 2016-11-09 | 朱石明 | A kind of multifunctional fire-fighting alarm |
| CN107967785A (en) * | 2017-12-07 | 2018-04-27 | 长沙准光里电子科技有限公司 | A kind of infrared LED fire-alarm |
| CN110111525A (en) * | 2019-05-24 | 2019-08-09 | 蔡宸熙 | A kind of fire-fighting early warning system Internet-based |
-
2015
- 2015-05-15 CN CN201520320368.6U patent/CN204596061U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106097634A (en) * | 2016-08-28 | 2016-11-09 | 朱石明 | A kind of multifunctional fire-fighting alarm |
| CN106097634B (en) * | 2016-08-28 | 2018-09-18 | 朱石明 | A kind of multifunctional fire-fighting alarm |
| CN107967785A (en) * | 2017-12-07 | 2018-04-27 | 长沙准光里电子科技有限公司 | A kind of infrared LED fire-alarm |
| CN110111525A (en) * | 2019-05-24 | 2019-08-09 | 蔡宸熙 | A kind of fire-fighting early warning system Internet-based |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Qiang Inventor before: Jin Wenli |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160914 Address after: 528051, Guangdong, Foshan Chancheng District, Foshan Avenue, 157 north, third storey room Patentee after: Foshan City Department of Dingxin Technology Co. Ltd. Address before: Wen Tao Lu Bai Yan Shan Industrial Zone of Xiangshan County of Zhejiang Province, Ningbo City, 315700 Patentee before: Jin Wenli |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20180515 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |