CN104515617B - Transforming plant primary equipment passive temperature measurement sensor - Google Patents
Transforming plant primary equipment passive temperature measurement sensor Download PDFInfo
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- CN104515617B CN104515617B CN201310462368.5A CN201310462368A CN104515617B CN 104515617 B CN104515617 B CN 104515617B CN 201310462368 A CN201310462368 A CN 201310462368A CN 104515617 B CN104515617 B CN 104515617B
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- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 33
- 230000001131 transforming effect Effects 0.000 title claims abstract description 29
- 230000008878 coupling Effects 0.000 claims abstract description 25
- 238000010168 coupling process Methods 0.000 claims abstract description 25
- 238000005859 coupling reaction Methods 0.000 claims abstract description 25
- 230000011664 signaling Effects 0.000 claims abstract description 12
- 238000005086 pumping Methods 0.000 claims abstract description 5
- 230000004044 response Effects 0.000 claims abstract description 5
- 238000010897 surface acoustic wave method Methods 0.000 claims abstract description 4
- 238000012360 testing method Methods 0.000 claims abstract description 4
- 230000005055 memory storage Effects 0.000 claims description 2
- 230000001939 inductive effect Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 abstract description 6
- 241000196324 Embryophyta Species 0.000 description 25
- 238000007689 inspection Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000004861 thermometry Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 241000127225 Enceliopsis nudicaulis Species 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Arrangements For Transmission Of Measured Signals (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The present invention provides a kind of transforming plant primary equipment passive temperature measurement sensor, including RF receiving circuit, temperature sensing circuit, Digital Logical Circuits and memory；RF receiving circuit includes coupling element, rectification circuit, mu balanced circuit and modulation-demodulation circuit；Temperature sensing circuit includes electric capacity temperature measurement circuit and analog-digital converter；Digital Logical Circuits includes two-way signaling electrical connection logic controller and codec.RF receiving circuit perceives the temperature of equipment under test only in response to the pumping signal identical or close with coupling element intrinsic frequency, using the frequency selectivity of surface acoustic wave coupling element；Electric capacity temperature measurement circuit measures to temperature characteristics of capacitance according to capacitance bridge principle, the relation of capacitance and temperature is carried out into correspondence again, exports the letter corresponding with temperature.The present invention is high using passive temperature e measurement technology, anti-interference and strong applicability, integrated level, and easy to implement, cost is cheap.
Description
Technical field
The present invention relates to transforming plant primary equipment temperature detection technical field, and in particular to one kind is applied to transforming plant primary
The passive temperature measurement sensor of device temperature measurement.
Background technology
Every transforming plant primary equipment temperature monitoring point is more than 500, if manually being patrolled according to the polling period of regulation
Inspection, its inspection amount and record data amount are very huge, and existing temperature measurement technology can not meet Daily Round Check requirement.Become at present
The thermometry of power station primary equipment mainly has the warm wax disk(-sc) method of examination, temperature indicating record labeling acts, IR thermometry or far infrared
Video camera thermometric, optical fiber temperature-measurement method etc..Warm wax disk(-sc) method is tried after the temperature of point being monitored exceedes the melting point for trying warm piece, warm piece is tried and holds
Easily melt drippage, replacement cost is high；Temperature indicating record labeling acts has the metachroic color writing function of overtemperature, it also requires manually
Periodically inspection, workload are big；IR thermometry is surveyed because infrared equipment is easily influenceed to cause thermometric error by sunray
It is high to measure environmental requirement, equipment is expensive；Optical fiber temperature-measurement method is using distributed fiberoptic sensor transmission signal, and optical fiber is pliable easy to break, no
Insulation can be otherwise influenceed by environmental pollution.Also some thermometry generally use battery powereds, security and stability is poor, meeting
The problem of bringing secondary replacing.
With the development of new technology, it is a kind of can passive transmission data and passive sensor with certain deposit ability
Through occurring.Reported according to pertinent literature, passive sensor is the technology that a kind of non-contact automatic identification technology develops.Typically
Design is exactly that temperature sensor is arranged on into equipment there may be the position of temperature rise, is connected by passive sensor and temperature sensor
Connect and transfer out signal, volume is big, inconvenient for use.Preferable solution is that temperature sensor is embedded in into passive sensor
In, due to so making chip power-consumption larger, can not be integrated into passive chip, or it is affected by magnetic fields larger, such as temperature-sensitive electricity
Resistance, it is difficult to adapt to this high-intensity magnetic field of transformer station, strongly disturbing working environment.
The content of the invention
The purpose of the present invention is：Overcome the deficiencies in the prior art, there is provided a kind of integrated level height, small volume, antijamming capability
Transforming plant primary equipment passive temperature measurement sensor that is strong and not needing additional power source, can be effectively applicable to transforming plant primary
The temperature survey of equipment, greatly improve routing inspection efficiency, reduce maintenance cost.
The technical scheme is that：The transforming plant primary equipment passive temperature measurement sensor of the present invention, its structure are special
Putting is：Including：RF receiving circuit, temperature sensing circuit, Digital Logical Circuits and memory
Above-mentioned RF receiving circuit includes coupling element, rectification circuit, mu balanced circuit and modulation-demodulation circuit；Coupling member
Part electrically connects with modulation-demodulation circuit two-way signaling；Rectification circuit electrically connects with coupling element；Mu balanced circuit and rectification circuit electricity
Connection；Temperature sensing circuit includes electric capacity temperature measurement circuit and analog-digital converter；Analog-digital converter and electric capacity temperature measurement circuit signal electricity
Connection；Digital Logical Circuits includes logic controller and codec；Codec electrically connects with logic controller two-way signaling；
The codec of Digital Logical Circuits electrically connects with the modulation-demodulation circuit two-way signaling of RF receiving circuit；Memory and temperature
The analog-digital converter signal electrical connection of sensing circuit；Memory and the logic controller two-way signaling of Digital Logical Circuits are electrically connected
Connect；
Above-mentioned RF receiving circuit for it is a kind of only in response to the pumping signal identical or close with coupling element intrinsic frequency,
The circuit of the temperature of equipment under test is perceived using the frequency selectivity of surface acoustic wave coupling element；
Above-mentioned electric capacity temperature measurement circuit is measured to capacitance-temperature characteristic according to capacitance bridge principle for one kind, again will
The relation of capacitance and temperature carries out correspondence, exports the circuit of the signal corresponding with temperature.
Further scheme is：The information of above-mentioned memory memory storage uses ID coding structures, including measured change
The device id of power station primary equipment, sensor ID and metrical information.
The present invention has positive effect：（1）The transforming plant primary equipment passive temperature measurement sensor of the present invention, use
Passive temperature e measurement technology, without power supply, remove the secondary replacement problem of the power supplys such as battery from, can be achieved to transforming plant primary equipment temperature
The permanently effective monitoring of degree.（2）The transforming plant primary equipment passive temperature measurement sensor of the present invention, using electric capacity thermometric, electricity
Container has the characteristic being unaffected by the magnetic field, and can adapt to high-intensity magnetic field interference environment condition；Electric capacity is to the high sensitivity of temperature simultaneously,
Appearance and size it is small and can be made as needed it is variously-shaped, so as to effectively adapt to answering for transforming plant primary equipment temperature detection
Heterocycle border, strong applicability.（3）The transforming plant primary equipment passive temperature measurement sensor of the present invention, using contactless temperature-measuring,
Damage is not produced to equipment, integrated level is high, and easy to implement, cost is cheap.（4）The transforming plant primary equipment passive temperature of the present invention
Measurement sensor, transforming plant primary side apparatus temperature patrol inspection efficiency can be significantly increased, reduce maintenance cost, ensure electricity consumption peace
Entirely.（5）The present invention transforming plant primary equipment passive temperature measurement sensor, its RF receiving circuit only in response to coupling element
The identical or close pumping signal of intrinsic frequency, it is thus possible to effectively adapt to the complicated electromagnetic field use environment of transformer station.
Brief description of the drawings
Fig. 1 is the circuit principle of compositionality schematic diagram of the present invention, and transforming plant primary equipment is also show in figure；
Fig. 2 is the information coding structure schematic diagram in the memory in Fig. 1.
Embodiment
The present invention is further detailed explanation with specific embodiment below in conjunction with the accompanying drawings.
（Embodiment 1）
See Fig. 1, the transforming plant primary equipment passive temperature measurement sensor of the present embodiment, mainly by RF receiving circuit,
Temperature sensing circuit, Digital Logical Circuits and memory composition.
RF receiving circuit is mainly made up of coupling element, rectification circuit, mu balanced circuit and modulation-demodulation circuit.Coupling member
On the one hand part is used for and electromagnetic field couples obtain magnetic energy, is on the other hand used for the radio frequency electromagnetic letter for receiving and sending corresponding frequencies
Number.Rectification circuit is used to the alternation magnetic energy of coupling element transmission being converted into DC voltage.Mu balanced circuit is used for rectification circuit
The working power of output transducer after the voltage voltage stabilizing of output.Modulation-demodulation circuit is used for the radio frequency letter received to coupling element
Number it is demodulated and for being transferred to coupling element after the temperature signal of measurement is modulated.Coupling element and modulation /demodulation
Circuit two-way signaling electrically connects；Rectification circuit electrically connects with coupling element；Mu balanced circuit electrically connects with rectification circuit.Radio frequency reception
Circuit is selected only in response to the pumping signal identical or close with coupling element intrinsic frequency, using the frequency of surface acoustic wave coupling element
Select the sexy temperature for knowing equipment under test.
Temperature sensing circuit, mainly include electric capacity temperature measurement circuit and analog-digital converter.Electric capacity temperature measurement circuit is according to electric capacity electricity
Bridge principle, is measured to capacitance-temperature characteristic, then the relation of capacitance and temperature is carried out correspondingly, and output is relative with temperature
The signal answered.The electric capacity of electric capacity temperature measurement circuit has to have significant change to temperature control height, its capacitance C with temperature rise,
Stability is good, and appearance and size is small and the advantages that influence by strong magnetic field circumstance.Analog-digital converter, for electric capacity temperature measurement circuit to be passed
Defeated signal carries out analog signal conversion.Analog-digital converter electrically connects with electric capacity temperature measurement circuit signal.
Digital Logical Circuits is mainly made up of logic controller and codec.Logic controller is used to instruct distribution, held
Row and memory read control.Codec is used for coding and the decoding of signal, that is, decodes by modulation-demodulation circuit transmission
Command information, and by the temperature information coded transmission of measurement to modulation-demodulation circuit carry out signal modulation.Codec with
Logic controller two-way signaling electrically connects.
Referring to Fig. 2, memory, for stored tag information and metrical information, for reading and subsequent treatment.Memory is adopted
With ID coding structures, include the device id of measured transforming plant primary equipment, sensor ID and metrical information.
The codec of Digital Logical Circuits electrically connects with the modulation-demodulation circuit two-way signaling of RF receiving circuit；Storage
Device electrically connects with the analog-digital converter signal of temperature sensing circuit；Memory and the two-way letter of the logic controller of Digital Logical Circuits
Number electrical connection.
The operation principle of the transforming plant primary equipment passive temperature measurement sensor of the present embodiment is：Staff is to power transformation
When primary equipment temperature of standing carries out inspection, pass through the wireless signal of supporting handset transmissions specific frequency, the wireless signal
Pass through the RF receiving circuit of the transforming plant primary equipment passive temperature measurement sensor of electromagnetic field Space Coupling to the present embodiment
In, the electromagnetic wave energy received is transformed into dc source by RF receiving circuit by rectifying and voltage-stabilizing, to activate the present embodiment
Transforming plant primary equipment passive temperature measurement sensor other circuits, while modulation-demodulation circuit such as transferring reception
Through codec transmission to logic controller after the order demodulation of temperature detection information；The logic controller root of Digital Logical Circuits
The data such as the temperature information of detection are transferred from memory according to order, warp knit decoder coding send modulation-demodulation circuit to carry out signal
After modulation, the information such as corresponding temperature are wirelessly transmitted to the handheld device of inspection staff by coupling element through built-in aerial
On.
To sum up, the transforming plant primary equipment passive temperature measurement sensor of the present embodiment, using passive temperature e measurement technology,
Without power supply, remove the secondary replacement problem of the power supplys such as battery from, the permanently effective monitoring to transforming plant primary equipment temperature can be achieved；
Using electric capacity thermometric, electric capacity has the characteristic being unaffected by the magnetic field, and can adapt to high-intensity magnetic field interference environment condition；Electric capacity pair simultaneously
The high sensitivity of temperature, appearance and size it is small and can be made as needed it is variously-shaped, so as to effectively adapt to transforming plant primary
The complex environment of device temperature detection, strong applicability；Using contactless temperature-measuring, damage is not produced to equipment, integrated level is high, real
Apply conveniently, cost is cheap；Transforming plant primary side apparatus temperature patrol inspection efficiency can be significantly increased, reduce maintenance cost, ensure and use
Electric safety.
Above example is the explanation to the embodiment of the present invention, rather than limitation of the present invention, relevant technology
The technical staff in field without departing from the spirit and scope of the present invention, can also make various conversion and change and obtain
To corresponding equivalent technical scheme, therefore all equivalent technical schemes should be included into the patent protection model of the present invention
Enclose.
Claims (1)
- A kind of 1. transforming plant primary equipment passive temperature measurement sensor, it is characterised in that：Passed including RF receiving circuit, temperature Inductive circuit, Digital Logical Circuits and memory；Described RF receiving circuit includes coupling element, rectification circuit, mu balanced circuit and modulation-demodulation circuit；Coupling element with Modulation-demodulation circuit two-way signaling electrically connects；Rectification circuit electrically connects with coupling element；Mu balanced circuit electrically connects with rectification circuit； Temperature sensing circuit includes electric capacity temperature measurement circuit and analog-digital converter；Analog-digital converter electrically connects with electric capacity temperature measurement circuit signal； Digital Logical Circuits includes logic controller and codec；Codec electrically connects with logic controller two-way signaling；Numeral The codec of logic circuit electrically connects with the modulation-demodulation circuit two-way signaling of RF receiving circuit；Memory and TEMP The analog-digital converter signal electrical connection of circuit；Memory electrically connects with the logic controller two-way signaling of Digital Logical Circuits；Described RF receiving circuit is to be a kind of only in response to the pumping signal identical or close with coupling element intrinsic frequency, utilization The frequency selectivity of surface acoustic wave coupling element perceives the circuit of the temperature of equipment under test；Described electric capacity temperature measurement circuit measures, again by electric capacity for one kind according to capacitance bridge principle to capacitance-temperature characteristic The relation of amount and temperature carries out correspondence, exports the circuit of the signal corresponding with temperature；The information of described memory memory storage uses ID coding structures, includes the equipment of measured transforming plant primary equipment ID, sensor ID and metrical information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310462368.5A CN104515617B (en) | 2013-09-30 | 2013-09-30 | Transforming plant primary equipment passive temperature measurement sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310462368.5A CN104515617B (en) | 2013-09-30 | 2013-09-30 | Transforming plant primary equipment passive temperature measurement sensor |
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| CN104515617A CN104515617A (en) | 2015-04-15 |
| CN104515617B true CN104515617B (en) | 2017-11-21 |
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| CN201310462368.5A Active CN104515617B (en) | 2013-09-30 | 2013-09-30 | Transforming plant primary equipment passive temperature measurement sensor |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352627B (en) * | 2015-09-18 | 2018-02-02 | 华帝股份有限公司 | Detection method of temperature detection system |
| CN110619596A (en) * | 2019-01-13 | 2019-12-27 | 徐晶 | Computer information storage method and storage medium |
| CN109788295B (en) * | 2019-01-21 | 2020-09-11 | 浙江华眼视觉科技有限公司 | Video data decoding and analyzing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE19919843A1 (en) * | 1999-04-30 | 2000-11-09 | Juergen Kunstmann | Contactless temperature measurement method, e.g. for moving engine parts, involves measuring power absorbed by resonant circuit subjected to variable frequency electromagnetic field |
| CN202101770U (en) * | 2011-06-22 | 2012-01-04 | 袁建州 | Passive wireless temperature measuring device of switch cabinet |
| CN102831457B (en) * | 2012-08-24 | 2015-06-24 | 广州中盈物流科讯有限公司 | Passive RFID ((Radio Frequency Identification Device) temperature sensor label |
| CN203069289U (en) * | 2013-01-30 | 2013-07-17 | 杭州得诚电力科技有限公司 | Temperature monitoring system based on wireless passive RF Technology |
| CN203489999U (en) * | 2013-09-30 | 2014-03-19 | 江苏省电力公司常州供电公司 | Passive temperature measuring sensor for substation primary equipment |
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