CN103743497A - Switch cabinet bus joint temperature rise monitoring apparatus based on sound surface wave sensor - Google Patents
Switch cabinet bus joint temperature rise monitoring apparatus based on sound surface wave sensor Download PDFInfo
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- CN103743497A CN103743497A CN201310587393.6A CN201310587393A CN103743497A CN 103743497 A CN103743497 A CN 103743497A CN 201310587393 A CN201310587393 A CN 201310587393A CN 103743497 A CN103743497 A CN 103743497A
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- 238000012544 monitoring process Methods 0.000 title abstract description 6
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 238000010897 surface acoustic wave method Methods 0.000 claims description 34
- 238000012806 monitoring device Methods 0.000 claims description 8
- 239000003381 stabilizer Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 230000003068 static effect Effects 0.000 description 1
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Abstract
The invention discloses a switch cabinet bus joint temperature rise monitoring apparatus based on a sound surface wave sensor. The apparatus comprises the sound surface wave sensor, a sound surface wave detector for detecting electromagnetic signals of the sound surface wave sensor, a modem connected with the sound surface wave detector, and a signal emission device connected with the modem. The sound surface wave detector comprises an electromagnetic signal sensor and a signal processing circuit. The advantages are as follows: the temperature of a bus joint is detected by use of the sound surface wave sensor, the detection mode is a passive and wireless mode, the structure is simple, the detection precision is high, the power consumption is low, the size is small, and the installation is easy.
Description
Technical field
The present invention relates to a kind of busbar joint temperature rise detecting device, relate in particular the switch cabinet bus joint temperature rise monitoring device based on surface acoustic wave sensor.
Background technology
Switch cubicle is the visual plant in electrical power trans mission/distribution system, is bearing and is cut-offfing and close the vital role such as power circuit, line fault protection.During temperature rise situation, weigh one of important parameter of the health status of electrical equipment, by being to avoid mishap that effective mode occurs to the monitoring of temperature rise situation.Especially in high voltage bus, due to the intersection of busbar joint, make the heating especially severe of joint location, superheating phenomenon easily causes circuit corrosion.And the corrosion of bus has a strong impact on generation to the operation of switch cubicle.When the temperature of bus is carried out to remote monitoring, its method is a lot, for example wired mode, and because the busbar joint in switch cubicle has 12, very trouble of its wiring; The mode that adopts thermistor, it is wireless mode, but will provide certain power supply to it, and power consumption is high, needs to change battery after a period of time, while changing battery, needs the operation that has a power failure, and this will bring very large economic loss to Utilities Electric Co..And when temperature reaches uniform temperature, battery explosive, brings threat to personnel's life.
Summary of the invention
The invention provides the switch cabinet bus joint temperature rise monitoring device based on surface acoustic wave sensor, it adopts surface acoustic wave sensor to detect the temperature of busbar joint, it is the detection mode of passive and wireless, simple in structure, and accuracy of detection is high, low in energy consumption, volume is small and exquisite, easily installation.
For solving above-mentioned technical matters, the present invention by the following technical solutions:
Switch cabinet bus joint temperature rise monitoring device based on surface acoustic wave sensor, it comprises surface acoustic wave sensor, for the surface acoustic wave detector of detection of SAW sensor electrical magnetic signal, be connected to modulator-demodular unit and the sender unit being connected with modulator-demodular unit on surface acoustic wave detector, described surface acoustic wave detector comprises electromagnetic signal inductor and signal processing circuit.
Further technical scheme is:
Described signal processing circuit comprises comparer A1, comparer A2 and variable resistor R1, described variable resistor R1 one end ground connection, and one end is connected with the inverting input of comparer A1; On the in-phase input end of described comparer A1, be connected with voltage stabilizer, between reverse input end and output terminal, be connected with resistance R 2; Between the output terminal of described comparer A1 and the in-phase input end of comparer A2, be connected with resistance R 3; Between the inverting input of described comparer A2 and output terminal, be connected with resistance R 4, on the output terminal of described comparer A2, be also connected with electrostatic discharge protection circuit.
Described electrostatic discharge protection circuit comprises diode D1 and diode D2, the anode of described diode D1 is connected on the negative electrode of diode D2 and the output terminal of comparer A2 simultaneously, the negative electrode of described diode D1 is connected on power supply, the plus earth of described diode D2.
Compared with prior art, the invention has the beneficial effects as follows:
1, the present invention is directly arranged on surface acoustic wave sensor busbar joint place, utilize surface acoustic wave sensor that the temperature of busbar joint is carried out and detected, and utilize surface acoustic wave detector to gather the temperature information of surface acoustic wave sensor, it is passive and wireless mode, not only avoided the trouble of wiring, and do not need to provide power supply, safety coefficient increases, and reduces the loss of outage of power administration.
2, the present invention is simple in structure, utilize surface acoustic wave detector to survey surface acoustic wave sensor, after signal being processed by modulator-demodular unit, by sender unit, the temperature signal of detection is sent and realizes remote monitoring to temperature, its entirety simple in structure.
While 3, using, only surface acoustic wave sensor need be arranged on to busbar joint place, its volume is small and exquisite, is easy to installation and accuracy of detection high, low in energy consumption.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is theory diagram of the present invention.
Fig. 2 is the circuit diagram of signal processing circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.Embodiments of the present invention include but not limited to the following example.
[embodiment]
The switch cabinet bus joint temperature rise monitoring device based on surface acoustic wave sensor as shown in Figure 1, it comprises surface acoustic wave sensor, for the surface acoustic wave detector of detection of SAW sensor electrical magnetic signal, be connected to modulator-demodular unit and the sender unit being connected with modulator-demodular unit on surface acoustic wave detector, described surface acoustic wave detector comprises electromagnetic signal inductor and signal processing circuit.The present invention directly utilizes the characteristic of surface acoustic wave sensor passive and wireless, surface acoustic wave sensor is arranged on to busbar joint place, utilize surface acoustic wave detector to gather detection to the signal of surface acoustic wave sensor, after the signal gathering being processed by modulation-demodulation signal, through sender unit, carry out teletransmission, realize remote monitoring.Electromagnetic signal inductor is responded to the electromagnetic signal of surface acoustic wave sensor, and signal processing circuit is processed signal.One-piece construction of the present invention is simple, is the mode of passive and wireless, avoids wiring to bother and need to change the drawback of battery, and safety coefficient is large.
The present invention considers the characteristic of electromagnetic signal inductor output current source, and described signal processing circuit comprises comparer A1, comparer A2 and variable resistor R1, described variable resistor R1 one end ground connection, and one end is connected with the inverting input of comparer A1; On the in-phase input end of described comparer A1, be connected with voltage stabilizer, between reverse input end and output terminal, be connected with resistance R 2; Between the output terminal of described comparer A1 and the in-phase input end of comparer A2, be connected with resistance R 3; Between the inverting input of described comparer A2 and output terminal, be connected with resistance R 4, on the output terminal of described comparer A2, be also connected with electrostatic discharge protection circuit.The temperature measurement range of this circuit is at-20--400 ℃, variable resistor R1 is for circuit zeroing, and resistance R 2 is for adjusting gain, and voltage stabilizer carries out voltage stabilizing to the in-phase input end of comparer A1, resistance R 3 its metering functions, avoid that electric current is excessive to be damaged comparer A2.The output terminal of electrostatic discharge protection circuit over cap circuit, while avoiding hand-held surface acoustic wave detector, the impact of human body static electrification on circuit.This circuit structure is simple, makes data processing degree of accuracy high, guarantees the degree of accuracy of temperature detection.
Described electrostatic discharge protection circuit comprises diode D1 and diode D2, the anode of described diode D1 is connected on the negative electrode of diode D2 and the output terminal of comparer A2 simultaneously, the negative electrode of described diode D1 is connected on power supply, the plus earth of described diode D2.
Be as mentioned above embodiments of the invention.The present invention is not limited to above-mentioned embodiment, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, within all falling into protection scope of the present invention.
Claims (3)
1. the switch cabinet bus joint temperature rise monitoring device based on surface acoustic wave sensor, it is characterized in that: it comprises surface acoustic wave sensor, for the surface acoustic wave detector of detection of SAW sensor electrical magnetic signal, be connected to modulator-demodular unit and the sender unit being connected with modulator-demodular unit on surface acoustic wave detector, described surface acoustic wave detector comprises electromagnetic signal inductor and signal processing circuit.
2. the switch cabinet bus joint temperature rise monitoring device based on surface acoustic wave sensor according to claim 1, it is characterized in that: described signal processing circuit comprises comparer A1, comparer A2 and variable resistor R1, described variable resistor R1 one end ground connection, one end is connected with the inverting input of comparer A1; On the in-phase input end of described comparer A1, be connected with voltage stabilizer, between reverse input end and output terminal, be connected with resistance R 2; Between the output terminal of described comparer A1 and the in-phase input end of comparer A2, be connected with resistance R 3; Between the inverting input of described comparer A2 and output terminal, be connected with resistance R 4, on the output terminal of described comparer A2, be also connected with electrostatic discharge protection circuit.
3. the switch cabinet bus joint temperature rise monitoring device based on surface acoustic wave sensor according to claim 2, it is characterized in that: described electrostatic discharge protection circuit comprises diode D1 and diode D2, the anode of described diode D1 is connected on the negative electrode of diode D2 and the output terminal of comparer A2 simultaneously, the negative electrode of described diode D1 is connected on power supply, the plus earth of described diode D2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310587393.6A CN103743497A (en) | 2013-11-21 | 2013-11-21 | Switch cabinet bus joint temperature rise monitoring apparatus based on sound surface wave sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310587393.6A CN103743497A (en) | 2013-11-21 | 2013-11-21 | Switch cabinet bus joint temperature rise monitoring apparatus based on sound surface wave sensor |
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| Publication Number | Publication Date |
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| CN103743497A true CN103743497A (en) | 2014-04-23 |
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| CN201310587393.6A Pending CN103743497A (en) | 2013-11-21 | 2013-11-21 | Switch cabinet bus joint temperature rise monitoring apparatus based on sound surface wave sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289569A (en) * | 2016-09-19 | 2017-01-04 | 深圳市惠程电气股份有限公司 | A kind of tube type bus contact temperature monitoring system |
| CN106546358A (en) * | 2015-09-23 | 2017-03-29 | 深圳市易流科技股份有限公司 | A kind of temperature-sensing probe and vehicle electronics |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4249418A (en) * | 1978-04-20 | 1981-02-10 | Tokyo Shibaura Denki Kabushiki Kaisha | Temperature detector using a surface acoustic wave device |
| CN1381711A (en) * | 2002-05-31 | 2002-11-27 | 杨杨 | Temp measurer of electronic clinical thermometer |
| CN102840927A (en) * | 2012-09-14 | 2012-12-26 | 中国科学院半导体研究所 | Surface acoustic wave temperature monitoring system suitable for gas insulated switch cabinet |
| CN102879126A (en) * | 2012-10-26 | 2013-01-16 | 奉化市供电局 | Wireless temperature sensing system for switch cabinet equipment |
| CN203561457U (en) * | 2013-11-21 | 2014-04-23 | 成都市宏山科技有限公司 | Bus joint temperature-rise detection apparatus based on acoustic surface wave (ASW) sensor |
-
2013
- 2013-11-21 CN CN201310587393.6A patent/CN103743497A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4249418A (en) * | 1978-04-20 | 1981-02-10 | Tokyo Shibaura Denki Kabushiki Kaisha | Temperature detector using a surface acoustic wave device |
| CN1381711A (en) * | 2002-05-31 | 2002-11-27 | 杨杨 | Temp measurer of electronic clinical thermometer |
| CN102840927A (en) * | 2012-09-14 | 2012-12-26 | 中国科学院半导体研究所 | Surface acoustic wave temperature monitoring system suitable for gas insulated switch cabinet |
| CN102879126A (en) * | 2012-10-26 | 2013-01-16 | 奉化市供电局 | Wireless temperature sensing system for switch cabinet equipment |
| CN203561457U (en) * | 2013-11-21 | 2014-04-23 | 成都市宏山科技有限公司 | Bus joint temperature-rise detection apparatus based on acoustic surface wave (ASW) sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546358A (en) * | 2015-09-23 | 2017-03-29 | 深圳市易流科技股份有限公司 | A kind of temperature-sensing probe and vehicle electronics |
| CN106546358B (en) * | 2015-09-23 | 2019-05-24 | 深圳市易流科技股份有限公司 | A kind of temperature-sensing probe and vehicle electronics |
| CN106289569A (en) * | 2016-09-19 | 2017-01-04 | 深圳市惠程电气股份有限公司 | A kind of tube type bus contact temperature monitoring system |
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Application publication date: 20140423 |