CN203561453U - Switch cabinet temperature detecting device based on thermocouple - Google Patents
Switch cabinet temperature detecting device based on thermocouple Download PDFInfo
- Publication number
- CN203561453U CN203561453U CN201320719562.2U CN201320719562U CN203561453U CN 203561453 U CN203561453 U CN 203561453U CN 201320719562 U CN201320719562 U CN 201320719562U CN 203561453 U CN203561453 U CN 203561453U
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- China
- Prior art keywords
- circuit
- switch cabinet
- display
- thermopair
- cabinet temperature
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- Expired - Fee Related
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- Arrangements For Transmission Of Measured Signals (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses a switch cabinet temperature detecting device based on a thermocouple. The switch cabinet temperature detecting device comprises the thermocouple and a measuring circuit connected with the thermocouple, the measuring circuit is connected with an amplification circuit, an A/D converting circuit and a display circuit in sequence, an output terminal of an amplifier is connected with a control driving circuit, the control driving circuit is connected with a signal emission module, and the display circuit comprises a display driving control electric appliance and a display connected with a display control circuit. The switch cabinet temperature detecting device is advantageous in that the temperature in a switch cabinet is monitored by the adoption of the thermoelectric effect of the thermocouple, the circuit structure is simple, the thermocouple can be directly contacted with a detected object, and the detection precision for the temperature is high.
Description
Technical field
The utility model relates to switch cubicle monitoring field, relates in particular a kind of switch cabinet temperature pick-up unit based on thermopair.
Background technology
Along with the sustainable growth of China's economy, the sustainable growth of electricity supply has brought serial 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.The reason that causes switch in-cabinet temperature to rise has a variety of, for example: loose contact, harmonic effects or load exceed standard.Switch in-cabinet temperature rises, and very easily causes the damage of equipment in cabinet, and interruption maintenance will bring serious impact to Utilities Electric Co..Monitoring for the temperature rise in switch cubicle is an important job.
Utility model content
The utility model provides a kind of switch cabinet temperature pick-up unit based on thermopair, and it utilizes the thermoelectric effect of thermopair to monitor the temperature in switch cubicle, and its circuit structure is simple, and thermopair directly contacts with measured object, high to the accuracy of detection of temperature.
For solving above-mentioned technical matters, the utility model by the following technical solutions:
Switch cabinet temperature pick-up unit based on thermopair, it comprises thermopair and is connected to the metering circuit on thermopair, in described metering circuit, be connected with amplifying circuit, A/D change-over circuit and display circuit in turn, on the output terminal of described amplifier, be connected with control driving circuit, on described control driving circuit, be connected with signal emission module, described display circuit comprises display driver control apparatus and is connected to the display on display control circuit.
Further technical scheme is:
As preferably, described metering circuit comprises filtering circuit and logic processing circuit.
As preferably, described amplifying circuit is multistage amplifier circuit.
Further, described amplifier comprises the composite amplifier that two triodes form.
As preferably, described signal emission module is wireless signal transmitting device.
Further, 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, of the present utility model simple in structure, be easy to realize.
2, the utility model utilizes the thermoelectric effect of thermopair to realize, the temperature of the measured object in switch cubicle to be detected, and thermopair directly contacts with measured object, high to the accuracy of detection of temperature.
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 switch cabinet temperature pick-up unit 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, A/D change-over circuit and display circuit in turn, on the output terminal of described amplifier, be connected with control driving circuit, on described control driving circuit, be connected with signal emission module, described display circuit comprises display driver control apparatus and is connected to the display on display control circuit.
For fear of eliminating the impact of undesired signal on subsequent conditioning circuit, described metering circuit comprises filtering circuit and logic processing circuit.Utilize filtering circuit to eliminate the impact of disturbing.
In order to improve the precision of detection, described amplifying circuit is multistage amplifier circuit.Utilize multistage amplifier circuit to carry out multistage amplification to the magnitude of voltage detecting, can improve the detection to temperature subtle change, can improve the detectable sensitivity of precision of detection.
Described amplifier comprises the composite amplifier that two triodes form.The composite amplifier that adopts triode to form, its switching speed is fast, enlargement factor is large, driving force is strong and it is integrated to be easy to, and plurality of advantages can improve overall performance of the present utility model.
Described signal emission module is wireless signal transmitting device.Adopt wireless signal transmitting module to launch wireless signal, can realize the remote monitoring to temperature, adopt wireless mode, can avoid the loaded down with trivial details of wiring.
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, signal after amplification is converted to and is applicable to the digital signal that display circuit is processed after A/D change-over circuit is processed, show again, so that people are carried out to on-site supervision to temperature.Signal after amplifying circuit is processed enters control driving circuit, and control driving circuit is transmitted to remote monitoring center by temperature information by signal emission module again and realizes remote monitoring.
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 switch cabinet temperature pick-up unit 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, A/D change-over circuit and display circuit in turn, on the output terminal of described amplifier, be connected with control driving circuit, on described control driving circuit, be connected with signal emission module, described display circuit comprises display driver control apparatus and is connected to the display on display control circuit.
2. the switch cabinet temperature pick-up unit based on thermopair according to claim 1, is characterized in that: described metering circuit comprises filtering circuit and logic processing circuit.
3. the switch cabinet temperature pick-up unit based on thermopair according to claim 1, is characterized in that: described amplifying circuit is multistage amplifier circuit.
4. the switch cabinet temperature pick-up unit based on thermopair according to claim 3, is characterized in that: described amplifier comprises the composite amplifier that two triodes form.
5. the switch cabinet temperature pick-up unit based on thermopair according to claim 1, is characterized in that: described signal emission module is wireless signal transmitting device.
6. the switch cabinet temperature pick-up unit based on thermopair according to claim 5, 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 |
|---|---|---|---|
| CN201320719562.2U CN203561453U (en) | 2013-11-15 | 2013-11-15 | Switch cabinet temperature detecting device based on thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320719562.2U CN203561453U (en) | 2013-11-15 | 2013-11-15 | Switch cabinet temperature detecting device based on thermocouple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203561453U true CN203561453U (en) | 2014-04-23 |
Family
ID=50511168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320719562.2U Expired - Fee Related CN203561453U (en) | 2013-11-15 | 2013-11-15 | Switch cabinet temperature detecting device based on thermocouple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203561453U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728040A (en) * | 2013-11-15 | 2014-04-16 | 成都市宏山科技有限公司 | Device for detecting temperature of inside of switch cabinet on basis of thermal couple |
-
2013
- 2013-11-15 CN CN201320719562.2U patent/CN203561453U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728040A (en) * | 2013-11-15 | 2014-04-16 | 成都市宏山科技有限公司 | Device for detecting temperature of inside of switch cabinet on basis of thermal couple |
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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 |