CN203561454U - Temperature rise alarm detection device based on thermocouple - Google Patents
Temperature rise alarm detection device based on thermocouple Download PDFInfo
- Publication number
- CN203561454U CN203561454U CN201320719907.4U CN201320719907U CN203561454U CN 203561454 U CN203561454 U CN 203561454U CN 201320719907 U CN201320719907 U CN 201320719907U CN 203561454 U CN203561454 U CN 203561454U
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- circuit
- temperature rise
- thermopair
- device based
- thermocouple
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Abstract
The utility model discloses a temperature rise alarm detection device based on a thermocouple. The temperature rise alarm detection device comprises the thermocouple and a measuring circuit connected with the thermocouple, the measuring circuit is connected with an amplification circuit, the amplification circuit is connected with an input terminal of a comparison circuit, the input terminal of the comparison circuit is also connected with a voltage stabilizing circuit, an output terminal of a comparator is connected with a control driving circuit, and the control driving circuit is connected with a signal emission module. The temperature rise alarm detection device is advantageous in that the condition of temperature rise in a switch cabinet is detected by the adoption of the thermoelectric effect of the thermocouple, a dual-alarm function is provided, the thermocouple can be directly contacted with a detected object, and the detection precision is high.
Description
Technical field
The utility model relates to switch cubicle monitoring field, relates in particular a kind of temperature rise alarm detecting device based on thermopair.
Background technology
Along with the sustainable growth of China's economy, the sustainable growth of electricity supply has brought a series of safety problem to grid equipment.Switch cubicle is a kind of important electric equipment, is undertaking the vital role that closes and put out power circuit, protection system safety.Cause in switch cubicle the reason of temperature rise to have a variety of, for example: loose contact, harmonic effects or load exceed standard.Temperature rise in switch cubicle, very easily causes the damage of equipment in cabinet, and interruption maintenance will bring serious impact to Utilities Electric Co..For the monitoring of temperature rise in switch cubicle, be an important job.
Utility model content
The utility model provides a kind of temperature rise alarm detecting device based on thermopair, and it utilizes the thermoelectric effect of thermopair to detect the temperature rise situation in switch cubicle, has dual alarm function, and thermopair directly contacts with measured object, and accuracy of detection is high.
For solving above-mentioned technical matters, the utility model by the following technical solutions:
Temperature rise alarm detecting device based on thermopair, it comprises thermopair and is connected to the metering circuit on thermopair, in described metering circuit, be connected with amplifying circuit, described amplifying circuit is connected on the input end of comparator circuit, on the input end of described comparator circuit, be also connected with mu balanced circuit, the output terminal of described comparer is connected to be controlled on driving circuit, on described control driving circuit, is connected with signal emission module.
Further technical scheme is:
As preferably, on described control driving circuit, be connected with warning device.
Further, described warning device is local warning device, and described local warning device is hummer or LED lamp.
As preferably, described metering circuit comprises filtering circuit and logic processing circuit.
As preferably, described mu balanced circuit comprises chip LM137 and is connected to the peripheral circuit on LM137.
As preferably, described control driving circuit comprises chip MSP430 and is connected to the clock circuit on chip MSP430.
The ultimate principle of thermocouple temperature measurement is that the material conductor of two kinds of heterogeneities forms closed loop, when two ends exist thermograde, just has electric current and pass through in loop, now between two ends, just has electromotive force---thermopower.
Compared with prior art, the beneficial effects of the utility model are:
1, the utility model utilizes the thermoelectric effect of thermopair to detect the temperature rise of measured object in switch cubicle, and thermopair directly contacts with measured object, and accuracy of detection is high.
2, the utlity model has local and remote dual alarm function, avoid that temperature rise is excessive to be damaged switch cubicle.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is theory diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.Embodiment of the present utility model includes but not limited to the following example.
[embodiment]
The temperature rise alarm detecting device based on thermopair as shown in Figure 1, it comprises thermopair and is connected to the metering circuit on thermopair, in described metering circuit, be connected with amplifying circuit, described amplifying circuit is connected on the input end of comparator circuit, on the input end of described comparator circuit, be also connected with mu balanced circuit, the output terminal of described comparer is connected to be controlled on driving circuit, on described control driving circuit, is connected with signal emission module.
In order further to realize local alarm function, on described control driving circuit, be connected with warning device.
Described warning device is local warning device, and described local warning device is hummer or LED lamp.In local alarm device, preferably hummer, because sound more can cause people's vigilance.Certainly, local alarm function also can adopt other alarm devices.
For fear of eliminating the impact of undesired signal on subsequent conditioning circuit, described metering circuit comprises filtering circuit and logic processing circuit.
Mu balanced circuit provides the fiducial value of a benchmark for comparator circuit, and more stable for the magnitude of voltage that mu balanced circuit is provided, described mu balanced circuit comprises chip LM137 and is connected to the peripheral circuit on LM137.
In order to make performance of the present utility model more superior, described control driving circuit comprises chip MSP430 and is connected to the clock circuit on chip MSP430.Chip MSP430 is the processor of super low-power consumption, and stable phase is high, and it can reduce overall power of the present utility model.
The utility model utilizes the thermoelectric effect of thermopair, utilize metering circuit to measure the electromotive force of thermopair, and through amplifying circuit, measurement result is amplified, mu balanced circuit produces the reference voltage of comparator circuit, it is alarm temperature value, when the magnitude of voltage of amplifying circuit conveying is greater than the magnitude of voltage of mu balanced circuit, the output of comparator circuit is reverse, now, control driving circuit will be controlled warning device and report to the police to realize local alarm, control driving circuit and also control signal transmitter module is sent to alarm signal to long-range Surveillance center, realize remote alarm.Signal emission module is preferably wireless transmitter module.
Be as mentioned above embodiment of the present utility model.The utility model is not limited to above-mentioned embodiment, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or close technical scheme, within all falling into protection domain of the present utility model.
Claims (6)
1. the temperature rise alarm detecting device based on thermopair, it is characterized in that: it comprises thermopair and is connected to the metering circuit on thermopair, in described metering circuit, be connected with amplifying circuit, described amplifying circuit is connected on the input end of comparator circuit, on the input end of described comparator circuit, be also connected with mu balanced circuit, the output terminal of described comparer is connected to be controlled on driving circuit, on described control driving circuit, is connected with signal emission module.
2. the temperature rise alarm detecting device based on thermopair according to claim 1, is characterized in that: on described control driving circuit, be connected with warning device.
3. the temperature rise alarm detecting device based on thermopair according to claim 2, is characterized in that: described warning device is local warning device, described local warning device is hummer or LED lamp.
4. the temperature rise alarm detecting device based on thermopair according to claim 1, is characterized in that: described metering circuit comprises filtering circuit and logic processing circuit.
5. the temperature rise alarm detecting device based on thermopair according to claim 1, is characterized in that: described mu balanced circuit comprises chip LM137 and is connected to the peripheral circuit on LM137.
6. the temperature rise alarm detecting device based on thermopair according to claim 1, is characterized in that: described control driving circuit comprises chip MSP430 and is connected to the clock circuit on chip MSP430.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320719907.4U CN203561454U (en) | 2013-11-15 | 2013-11-15 | Temperature rise alarm detection device based on thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320719907.4U CN203561454U (en) | 2013-11-15 | 2013-11-15 | Temperature rise alarm detection device based on thermocouple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203561454U true CN203561454U (en) | 2014-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320719907.4U Expired - Fee Related CN203561454U (en) | 2013-11-15 | 2013-11-15 | Temperature rise alarm detection device based on thermocouple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203561454U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728039A (en) * | 2013-11-15 | 2014-04-16 | 成都市宏山科技有限公司 | Busbar temperature rise warning detection device based on thermocouple |
| WO2016139241A1 (en) * | 2015-03-04 | 2016-09-09 | Arcelik Anonim Sirketi | A cooling device comprising a thermoelectric module |
-
2013
- 2013-11-15 CN CN201320719907.4U patent/CN203561454U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728039A (en) * | 2013-11-15 | 2014-04-16 | 成都市宏山科技有限公司 | Busbar temperature rise warning detection device based on thermocouple |
| WO2016139241A1 (en) * | 2015-03-04 | 2016-09-09 | Arcelik Anonim Sirketi | A cooling device comprising a thermoelectric module |
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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 |
Granted publication date: 20140423 Termination date: 20141115 |
|
| EXPY | Termination of patent right or utility model |