CN204330173U - A kind of easy electronic temperature transmitter - Google Patents
A kind of easy electronic temperature transmitter Download PDFInfo
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- CN204330173U CN204330173U CN201420766259.2U CN201420766259U CN204330173U CN 204330173 U CN204330173 U CN 204330173U CN 201420766259 U CN201420766259 U CN 201420766259U CN 204330173 U CN204330173 U CN 204330173U
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- resistance
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- emitting diode
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Abstract
The utility model discloses a kind of easy electronic temperature transmitter, comprise direct supply, switch, the first resistance to the 5th resistance, the first triode, the second triode, the first light emitting diode, the second light emitting diode, amplifier, potentiometer and thermistor.When dut temperature raises, the internal resistance of thermistor RH reduces, the level of the inverting input of amplifier is lower than the level of in-phase input end, the output terminal of amplifier exports high level, now, the second triode ON, the first triode cut-off, first lumination of light emitting diode, represents that temperature is beyond setting value.Regulator potentiometer can change desired temperature.Compared with prior art, the utility model has the advantage that circuit structure is simple, adopt electronic component few, with low cost, is particularly useful for the making of various temperature electronic product, is conducive to popularizing.
Description
Technical field
The utility model relates to a kind of electronic sensor, particularly relates to a kind of easy electronic temperature transmitter.
Background technology
The Measuring Time of traditional electronic temperature sensor is short, measuring accuracy is high, convenient reading, and has memory function.It is made up of temperature-sensing probe, signal processing unit, display screen, power supply four part usually.Temperature-sensing probe is sensing unit, generally selects the thermistor of one or several high-precision quick response, and it is directly connected to accuracy and the response speed of output temperature.And electronic temperature transmitter complex structure of the prior art, adopt that electronic component is many, cost is high, it is universal to be unfavorable for and promote.
Utility model content
The purpose of this utility model is just to provide a kind of easy electronic temperature transmitter to solve the problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises direct supply, switch, first resistance is to the 5th resistance, first triode, second triode, first light emitting diode, second light emitting diode, amplifier, potentiometer and thermistor, the positive pole of described direct supply is connected with the first end of described switch, the second end of described switch respectively with the first end of described first resistance, the first end of described second resistance, the electrode input end of described amplifier, the first end of described 5th resistance is connected with the first end of described thermistor, second end of described first resistance is connected with the positive pole of described first light emitting diode and the positive pole of described second light emitting diode respectively, the negative pole of described first light emitting diode respectively with the second end of described second resistance, the collector of described second triode is connected with the base stage of described first triode, and the collector of described first triode is connected with the negative pole of described second light emitting diode, the emitter of described first triode respectively with the negative pole of described direct supply, the emitter of described second triode, the negative input of described amplifier, the first end of described 4th resistance, the first end of described potentiometer is connected with the sliding end of described potentiometer, the base stage of described second triode is connected with the first end of described 3rd resistance, second end of described 3rd resistance is connected with the output terminal of described amplifier, the in-phase input end of described amplifier is connected with the second end of described potentiometer and the second end of described thermistor respectively, and the inverting input of described amplifier is connected with the second end of described 5th resistance and the second end of described 4th resistance respectively.
The beneficial effects of the utility model are:
The utility model is a kind of easy electronic temperature transmitter, and compared with prior art, the utility model has the advantage that circuit structure is simple, adopt electronic component few, with low cost, is particularly useful for the making of various temperature electronic product, is conducive to popularizing.
Accompanying drawing explanation
Fig. 1 is circuit structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1: the utility model comprises direct supply E, switch S, first resistance R1 is to the 5th resistance R5, first triode VT1, second triode VT2, first LED 1, second LED 2, amplifier IC, potentiometer RP and thermistor RH, the positive pole of direct supply E is connected with the first end of switch S, the second end of switch S respectively with the first end of the first resistance R1, the first end of the second resistance R2, the electrode input end of amplifier IC, the first end of the 5th resistance R5 is connected with the first end of thermistor RH, second end of the first resistance R1 is connected with the positive pole of the first LED 1 and the positive pole of the second LED 2 respectively, the negative pole of the first LED 1 respectively with second end of the second resistance R2, the collector of the second triode VT2 is connected with the base stage of the first triode VT1, and the collector of the first triode VT1 is connected with the negative pole of the second LED 2, the emitter of the first triode VT1 respectively with the negative pole of direct supply E, the emitter of the second triode VT2, the negative input of amplifier IC, the first end of the 4th resistance R4, the first end of potentiometer RP is connected with the sliding end of potentiometer RP, the base stage of the second triode VT2 is connected with the first end of the 3rd resistance R3, second end of the 3rd resistance R3 is connected with the output terminal of amplifier IC, the in-phase input end of amplifier IC is connected with second end of potentiometer RP and second end of thermistor RH respectively, and the inverting input of amplifier IC is connected with second end of the 5th resistance R5 and second end of the 4th resistance R4 respectively.
As shown in Figure 1: the 4th resistance R4, the 5th resistance R5, potentiometer RP and thermistor RH form the electric bridge of measuring tempeature, when temperature changes in normal range, the internal resistance of thermistor RH is very large, the level of the inverting input of amplifier IC higher than the level of in-phase input end, the output terminal output low level of amplifier IC, now, second triode VT2 ends, first triode VT1 conducting, the second LED 2 is luminous, represents that humidity is normal.When dut temperature raises, the internal resistance of thermistor RH reduces, the level of the inverting input of amplifier IC is lower than the level of in-phase input end, the output terminal of amplifier IC exports high level, now, the second triode VT2 conducting, the first triode VT1 ends, first LED 1 is luminous, represents that temperature is beyond setting value.Regulator potentiometer RP can change desired temperature.
Claims (1)
1. an easy electronic temperature transmitter, it is characterized in that: comprise direct supply, switch, first resistance is to the 5th resistance, first triode, second triode, first light emitting diode, second light emitting diode, amplifier, potentiometer and thermistor, the positive pole of described direct supply is connected with the first end of described switch, second end of described switch respectively with the first end of described first resistance, the first end of described second resistance, the electrode input end of described amplifier, the first end of described 5th resistance is connected with the first end of described thermistor, second end of described first resistance is connected with the positive pole of described first light emitting diode and the positive pole of described second light emitting diode respectively, the negative pole of described first light emitting diode respectively with the second end of described second resistance, the collector of described second triode is connected with the base stage of described first triode, the collector of described first triode is connected with the negative pole of described second light emitting diode, the emitter of described first triode respectively with the negative pole of described direct supply, the emitter of described second triode, the negative input of described amplifier, the first end of described 4th resistance, the first end of described potentiometer is connected with the sliding end of described potentiometer, the base stage of described second triode is connected with the first end of described 3rd resistance, second end of described 3rd resistance is connected with the output terminal of described amplifier, the in-phase input end of described amplifier is connected with the second end of described potentiometer and the second end of described thermistor respectively, the inverting input of described amplifier is connected with the second end of described 5th resistance and the second end of described 4th resistance respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420766259.2U CN204330173U (en) | 2014-12-08 | 2014-12-08 | A kind of easy electronic temperature transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420766259.2U CN204330173U (en) | 2014-12-08 | 2014-12-08 | A kind of easy electronic temperature transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204330173U true CN204330173U (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420766259.2U Active CN204330173U (en) | 2014-12-08 | 2014-12-08 | A kind of easy electronic temperature transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204330173U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004441A (en) * | 2015-08-14 | 2015-10-28 | 成都易思科科技有限公司 | Temperature test circuit adopting diode as sensor |
| CN109089931A (en) * | 2018-09-27 | 2018-12-28 | 佛山科学技术学院 | A kind of multi-functional pet clothes |
| CN109089930A (en) * | 2018-09-27 | 2018-12-28 | 佛山科学技术学院 | A kind of pet clothes with temperature-prompting function |
-
2014
- 2014-12-08 CN CN201420766259.2U patent/CN204330173U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004441A (en) * | 2015-08-14 | 2015-10-28 | 成都易思科科技有限公司 | Temperature test circuit adopting diode as sensor |
| CN109089931A (en) * | 2018-09-27 | 2018-12-28 | 佛山科学技术学院 | A kind of multi-functional pet clothes |
| CN109089930A (en) * | 2018-09-27 | 2018-12-28 | 佛山科学技术学院 | A kind of pet clothes with temperature-prompting function |
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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: Shui Yong Inventor before: Tian Ye Inventor before: Xia Meichen Inventor before: Liu Zhicai Inventor before: Zhu Changyu Inventor before: Lu Lijun |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160622 Address after: 510000, Guangdong, Guangzhou, Tianhe District, Dongguan Zhuang, one horizontal road No. 116, 406, 408, 416 rooms Patentee after: Guangzhou Xin Yun is Mdt InfoTech Ltd Address before: 610041 Yulin high tech Zone, Sichuan, South Road, No. 118, No. Patentee before: INLEADTOP, INC. |