CN104132748B - Switch cubicle surface acoustic wave SAW temp measuring system - Google Patents

Switch cubicle surface acoustic wave SAW temp measuring system Download PDF

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Publication number
CN104132748B
CN104132748B CN201410358020.6A CN201410358020A CN104132748B CN 104132748 B CN104132748 B CN 104132748B CN 201410358020 A CN201410358020 A CN 201410358020A CN 104132748 B CN104132748 B CN 104132748B
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China
Prior art keywords
saw
acoustic wave
surface acoustic
switch cubicle
controller
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Expired - Fee Related
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CN201410358020.6A
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Chinese (zh)
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CN104132748A (en
Inventor
李想
张磊
朱小锋
顾慧
曹旭荣
胡定宁
耿巍
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Nanjing Putian Telecommunications Co Ltd
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Nanjing Putian Telecommunications Co Ltd
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Priority to CN201410358020.6A priority Critical patent/CN104132748B/en
Publication of CN104132748A publication Critical patent/CN104132748A/en
Application granted granted Critical
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Expired - Fee Related legal-status Critical Current
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Abstract

The present invention is switch cubicle surface acoustic wave SAW temp measuring system, and its structure includes SAW Temperature Sensors 1, surface acoustic wave dual-mode antenna 7, feeder line 9, controller.Advantage: 1) solve the problems such as high_voltage isolation, sensor power and wiring isolation;2) small-sized SAW Temperature Sensors, it is placed directly within heat generating spot, directly displaying the real time temperature of each contact on the controller, it is possible to carry out many kinds of parameters setting and inquiry, safety is high, stable and reliable for performance, volume is little, is directly installed on the Mume flower contact in switch cubicle, it is achieved the real-time monitoring of heat generating spot temperature, and and controller between data be wirelessly transferred, easy for installation flexibly not by switch cabinet structure and spacial influence.Fixture uses and abuts directly on the fingertip of Mume flower contact, can be operated in high pressure, high electric current, highfield, inflammable and explosive, have the various severe application occasions such as burn into dust to carry out temperature survey;3) support open communication interface, it is easy to accomplish the system integration.

Description

Switch cubicle surface acoustic wave SAW temp measuring system
Technical field
The present invention relates to a kind of surface acoustic wave SAW temp measuring system for switch cubicle thermometric, belong to surface acoustic wave prison Survey technology field.
Background technology
The switch cubicle of power system in During Process of Long-term Operation, the Mume flower contact of circuit breaker cart often occur surface oxidation, The problems such as electric shock point is aging, cause apparatus overheat even major accident.And switch cubicle is Sealing Arrangement, narrow space is general Artificial inspection more bothers, and does not also accomplish real time temperature measurement.The solution of contact temperature measurement is even more important.Existing solution mainly has Following two:
1, wireless temperature measurement solution
A) sensing way to take power sensing way to take power is because the reason of its structure, and its volume is the biggest, it is impossible to be arranged on On contact, even cannot install in some type of switch cubicle, mounting means is comparatively laborious, the upgrading in switch cubicle later stage The most unlikely realize.Sensing power taking thermometric is affected very big by electric current on the line of induction, and sensing power taking thermometric is by its internal electricity Holding or the impact of battery, the operation in switch cubicle also can only have about 5 years;
B) battery power supply mode battery cannot solve the relation of volume and capacity always.Due to bigger than normal former of battery volume Cause, it is impossible to be arranged on contact.The battery life-span in high temperature environments is greatly shortened, and must change battery and just can continue after 1-2 Use.In electric power maintenance code 2 year repair time can not merely because running down of battery and power switch cabinet is disabled and changes Battery.Battery electricity-taking mode, later maintenance cost is the highest.
2, optical fiber temperature-measurement solution
Optical fiber " essential safety " solves a optical fiber passive difficult problem in switch cubicle thermometric.But optical fiber must be at switch cubicle In lay substantial amounts of optical fiber, and draw and measure outside switch cubicle.Dust in switch cubicle will adsorb in long-term work At optical fiber surface, easily produce optical fiber surface and pollute, and cause optical fiber creeping discharge.Safety coefficient is substantially reduced.
Surface acoustic wave SAW thermometry is the effective detection means such as temperature, pressure and displacement.Apply crystalline material Physical characteristic.The change of the physical characteristic of crystal is converted into the signal of telecommunication automatically by piezoelectricity principle of induction.Its detection principle Operation principle is by the surface of emission of radio frequency signals to piezoelectric, then the echo that be have impact on by temperature is gone back to electricity again Signal and obtain temperature data.The largest benefit of Surface wave technology is that the passive operation principle that make use of sensor is unconventional Under running environment, (high voltage, high electric current) realizes wireless temperature data acquisition.Existing market has wireless temperature monitoring and infrared ray Temperature monitoring, their shortcoming is easily by electromagnetic interference, needs power supply.As charged in thermocouple and infrared ray direct irradiation etc., Can not use on switch cubicle.
The scheme of the switch cubicle thermometric that the most useful surface acoustic wave techniques realizes, but be all to realize busbar in switch cubicle, company The thermometric of joint, is all not carried out the direct measurement of Mume flower contact on circuit breaker cart, and main cause is that temperature sensor is all adopted With shaft-like, spring-like antenna, volume is big, it is impossible to be arranged on Mume flower contact, then cannot realize Mume flower contact temperature in switch cubicle Directly measure.The most it is not specifically designed to the precedent of the SAW Temperature Sensors of switch cubicle Mume flower contact thermometric both at home and abroad.
Summary of the invention
What the present invention proposed is a kind of switch cubicle surface acoustic wave SAW temp measuring system, and its purpose is intended to overcome prior art institute The drawbacks described above existed.Solve Mume flower contact heat generating spot on the passive and wireless of temp measuring system, circuit breaker cart directly measure and The problems such as switch cubicle later stage upgrading difficulty is big, will be greatly improved the safety that native system runs in high-voltage great-current environment Property, use surface acoustic wave and data transmission technology, can high pressure, high electric current, highfield, inflammable and explosive in the environment of carry out temperature Measure, the fields such as electric power, chemical industry and tunnel can be applied to.
The technical solution of the present invention: switch cubicle surface acoustic wave SAW temp measuring system, its structure is to include surface acoustic wave temperature Degree sensor, surface acoustic wave dual-mode antenna, feeder line, controller;Wherein SAW Temperature Sensors and surface acoustic wave transmitting-receiving sky Line is correspondingly arranged, and the SAW harvester in controller connects surface acoustic wave dual-mode antenna, sound by radio-frequency antenna adapter, feeder line Surface wave temperature sensor is arranged on the fingertip in switch cubicle, and described fingertip contacts with the moving contact on circuit breaker cart, work When making, SAW Temperature Sensors is representing that in switch cubicle, the temperature transition of fingertip becomes wireless signal, is received by surface acoustic wave Send out antenna deliver to controller be acquired analyze and show, its arrive whole signal transmission path all realize wireless, it is achieved high pressure Isolation.
Advantages of the present invention:
1) solving the problems such as high_voltage isolation, sensor power and wiring isolation, surface acoustic wave inherently uses wireless skill Art, designs exclusive small-sized SAW Temperature Sensors, is placed directly within heat generating spot, directly display each contact on the controller Real time temperature, it is possible to carry out many kinds of parameters setting and inquiry, safety is high, stable and reliable for performance;
2) SAW Temperature Sensors volume is little, is directly installed on the Mume flower contact in switch cubicle, it is achieved heat generating spot The real-time monitoring of temperature, and and controller between data be wirelessly transferred, easy for installation flexibly not by switch cabinet structure and space shadow Ring.Fixture uses the fingertip abutting directly on Mume flower contact, does not affect the normal use of Flos Mume sheet simultaneously, and effect almost reaches to and touches Point is synthermal;
3) SAW Temperature Sensors realizes passive mode, volume is little, easy for installation, capacity of resisting disturbance by force, no Use battery, safe and reliable, meet the insulating requirements of power system;Substantially without maintenance after installing successfully, it is achieved higher frequency Rate carries out the collection of temperature information, and real-time property is high.
4) principle utilizing surface acoustic wave is monitored the temperature of power switch cabinet contact, and it have employed surface acoustic wave skill Art and data transmission technology, SAW Temperature Sensors can be operated in high pressure, high electric current, highfield, inflammable and explosive, have The various severe application occasions such as burn into dust carry out temperature survey.
5) there is monitoring point temperature anomaly auto-alarm function, and realize sound and light alarm.
6) support open communication interface, it is easy to accomplish the system integration.
Accompanying drawing explanation
Fig. 1 is switch cubicle surface acoustic wave SAW temp measuring system structure scheme of installation.
Fig. 2-1 be controller show, the main TV structure schematic diagram of control part.
Fig. 2-2 is the rearview of Fig. 2-1.
Fig. 2-3 is the upward view of Fig. 2-1.
Fig. 3-1 is the main TV structure schematic diagram of controller collection, power pack.
Fig. 3-2 is the rearview of Fig. 3-1.
Fig. 3-3 is the side view of Fig. 3-1.
Fig. 3-4 is the top view of Fig. 3-1.
Fig. 4-1 is the main TV structure schematic diagram of SAW Temperature Sensors.
Fig. 4-2 is the side view of Fig. 4-1.
Fig. 4-3 is the sectional view of Fig. 4-1.
Fig. 5 is the functional schematic of switch cubicle surface acoustic wave SAW temp measuring system.
Fig. 6 is the functional schematic of controller.
Fig. 7 is the functional schematic of SAW Temperature Sensors.
In figure 1 is SAW Temperature Sensors, 2 is spring, 3 is fingertip, 4 is static contact, 5 is moving contact, 6 is disconnected Road device handcart, 7 be surface acoustic wave dual-mode antenna, 8 be baffle plate, 9 be feeder line, 10 be control room's door, 11 be display control section, 12 Be gather and power pack, 13 be switch cubicle, 14 be shell A, 15 be antenna, 16 be film face-plate, 17 be charactron, 18 be fortune Row display lamp, 19 be alarm indicator, 20 be film key, 21 be A flat cable interface, 22 be buzzer, 23 be system liter Level interface, 24 be bonnet, 25 be B flat cable interface, 26 electric fuses, 27 be exchange input port, 28 be on and off switch, 29 be to penetrate Frequently antenna connector, 30 be B shell, 31 be label, 32 be FPC antenna, 33 be upper cover, 34 be A shell fragment, 35 be circuit unit, 36 be bearing, 37 be B shell fragment, 38 be clip, A be relay control room, B be breaker chamber, C be bus-bar room.
Detailed description of the invention
Comparison accompanying drawing, switch cubicle surface acoustic wave SAW temp measuring system, its structure includes SAW Temperature Sensors 1, sound table Face ripple dual-mode antenna 7, feeder line 9, controller;Wherein SAW Temperature Sensors 1 is corresponding with surface acoustic wave dual-mode antenna 7 sets Putting, the SAW harvester in controller connects surface acoustic wave dual-mode antenna 7, sound surface by radio-frequency antenna adapter 29, feeder line 9 Ripple temperature sensor 1 is arranged on the fingertip 3 in switch cubicle 13, and described fingertip 3 contacts with the moving contact 5 on circuit breaker cart 6, During work, SAW Temperature Sensors 1 represents that in switch cubicle 13, the temperature transition of fingertip 3 becomes wireless signal, by sound table Face ripple dual-mode antenna 7 is delivered to controller and is acquired analyzing and showing, it arrives whole signal transmission path and all realizes wireless, real Existing high_voltage isolation.
The quantity of described SAW Temperature Sensors 1 is 1-6, and specifically used quantity is installed on demand, surface acoustic wave Dual-mode antenna 7 is arranged on the baffle plate 8 in breaker chamber B.
Described controller is divided into display control 11, gathers and power supply 12 2 part, wherein micro-in display control section 11 Processor the first signal input/output end is adopted with the SAW in collection and power pack 12 by the management module that resets, flat cable First signal input/output terminal correspondence of storage connects, the secondary signal input/output end of microprocessor by flat cable with Gather connect corresponding with the secondary signal input/output terminal of the SAW harvester in power pack 12.
First signal input/output end of microprocessor is by management module, flat cable and collection and the power supply unit of resetting The the first signal input/output terminal correspondence dividing the SAW harvester in 12 connects.
Gather and power pack 12 is separately mounted on control room's door 10 of relay control room A with display control section 11 Inside and outside.
Comparison Fig. 2-1,2-2,2-3, Fig. 6, display control section 11, its structure includes shell A 14, antenna 15, pellicular front Plate 16, charactron 17, run indicator 18, alarm indicator 19, film key 20, A flat cable interface 21, buzzer 22, System upgrade interface 23;Wherein antenna 15 is arranged on the top of shell A 14, is coated with thin film on the front surface of this shell A 14 Panel 16, in shell A 14 built with 6 groups of charactrons 17, this charactron 17 is for parameters such as displays temperature values, at film face-plate 16 Being provided with 5 film keys 20, this film key 20 arranges parameter for inquiry, sets run indicator 18 on film key 20 side With alarm indicator 19, setting A flat cable interface 21 on the rear surface of shell A 14, this A flat cable interface 21 is used for and control B flat cable interface 25 in device collection processed and power pack 12 connects, and is provided with buzzer 22 and system in the bottom of shell A 14 Upgrade interface 23;Display control section 11 also includes a microprocessor, a signal output part of this microprocessor with The signal input part of Zigbee wireless module connects, and the signal output part of Zigbee wireless module connects 2.4GHz antenna.
During work, each surface acoustic wave temperature that A flat cable interface 21 receives controller collection and power pack 12 transmits The temperature information of sensor, changes through microprocessor analysis, shows on charactron 17;Parameter can be carried out by thin film Arranging inquiry, when temperature exceedes the threshold value of setting, and alarm indicator 19 will flash, buzzer 22 pipes and points out user.
Comparison Fig. 3-1,3-2,3-3,3-4, Fig. 6, gather and power pack 12, its structure includes bonnet 24, B flat cable Interface 25, electric fuse 26, alternating current input port 27, on and off switch 28, radio-frequency antenna interface 29, B shell 30;Wherein at B shell The rear portion of 30, equipped with bonnet 24, sets B flat cable interface 25 on this bonnet 24, is provided with insurance on the one side of B shell 30 Silk 26, alternating current input port 27, on and off switch 28 and radio-frequency antenna interface 29;B flat cable interface 25 is for showing with controller Showing and control the A flat cable interface 21 of part 11 and connect, radio-frequency antenna interface 29 is for being connected with feeder line 9.Gather and power supply Part 12 also includes a SAW harvester, and SAW harvester connects surface acoustic wave dual-mode antenna 7.
During work, the working power of this equipment is provided by alternating current input port 27, and by B flat cable interface 25 is Controller shows and controls part 11 provides working power, radio-frequency antenna interface 29 to be connected with antenna 15 by feeder line 9, it is achieved with The wireless connections of SAW Temperature Sensors 1.Deliver to show control by flat cable interface by the temperature information collected Part 11.
Comparison Fig. 4-1-4-3, Fig. 7, SAW Temperature Sensors 1, its structure includes label 31, FPC antenna 32, upper cover 33, circuit unit 35, bearing 36, A shell fragment 34, B shell fragment 37, clip 38;Wherein clip 38 connects with bearing 36, on this bearing 36 Built with circuit unit 35, equipped with A shell fragment 34 and B shell fragment 37 on circuit unit 35, this A shell fragment 34 connects with FPC antenna 32, on Lid 33 covers on bearing 36, is provided with label 31 on the upper surface of upper cover 33;Surface acoustic wave in SAW Temperature Sensors 1 Temperature transition chip connects FPC antenna 32 by matching network.
A length of 20mm of SAW Temperature Sensors, a width of 18mm, a height of 25mm, be directly installed on fingertip, sound table Face ripple temperature sensor and the contact area of fingertip are long 13.2mm, wide 6mm, by gold-plated shell fragment and the fingertip of excellent heat conductivity Contact.Achieve the monitoring of fingertip real time temperature.Do not affect the action of Mume flower contact simultaneously.
Have employed built-in FPC antenna technology in this SAW Temperature Sensors, volume is little, reliable and stable.
Polyimide material selected by sheathing material, possesses the thermostability of excellence, and the working environment meeting power switch cabinet is wanted Ask.
The effect brought:
For the special construction of fingertip in chopper go-cart in power switch cabinet, it is optimized design, surface acoustic wave temperature Degree a length of 20mm of sensor, a width of 18mm, a height of 25mm, small-sized SAW Temperature Sensors is directly installed on fingertip On, this SAW Temperature Sensors is a length of 13.2mm, a width of 6mm with the size of the contact surface of fingertip, excellent by heat conductivity Good gold-plated shell fragment contacts with fingertip.Achieve the monitoring of fingertip real time temperature.Do not affect the action of Mume flower contact simultaneously.
Have employed built-in FPC antenna technology in this SAW Temperature Sensors, volume is little, reliable and stable.
Polyimide material selected by the sheathing material of this SAW Temperature Sensors, possesses the thermostability of excellence, meets The operating environment requirements of power switch cabinet.
During work, circuit unit 35 measures the temperature of fingertip 3 in circuit breaker cart 6 in real time by B shell fragment 37, and by with Temperature information is transferred to antenna 15 by the FPC antenna 32 that A shell fragment 34 is connected.

Claims (5)

1. switch cubicle surface acoustic wave SAW temp measuring system, is characterized in that including that SAW Temperature Sensors, surface acoustic wave receive and dispatch sky Line, feeder line, controller;Wherein SAW Temperature Sensors is correspondingly arranged with surface acoustic wave dual-mode antenna, in controller SAW harvester connects surface acoustic wave dual-mode antenna by radio-frequency antenna adapter, feeder line, and SAW Temperature Sensors is arranged on On fingertip in switch cubicle, described fingertip contacts with the moving contact on circuit breaker cart, during work, and SAW Temperature Sensors Representing that in switch cubicle, the temperature transition of fingertip becomes wireless signal, delivers to controller by surface acoustic wave dual-mode antenna and is acquired Analyzing and show, it arrives whole signal transmission path and all realizes wireless, it is achieved high_voltage isolation.
Switch cubicle surface acoustic wave SAW temp measuring system the most according to claim 1, is characterized in that described surface acoustic wave temperature passes The quantity of sensor is 1-6.
Switch cubicle surface acoustic wave SAW temp measuring system the most according to claim 1, is characterized in that described controller is divided into display Controlling, gather and power supply two part, wherein the first signal input/output end of the microprocessor in display control section is by multiple Position management module, the first corresponding phase of signal input/output terminal of flat cable and the SAW harvester in collection and power pack Connecing, the secondary signal input/output end of microprocessor is by flat cable and the of the SAW harvester gathered and in power pack Binary signal input/output terminal correspondence connects.
Switch cubicle surface acoustic wave SAW temp measuring system the most according to claim 3, is characterized in that described collection and power pack It is separately mounted on inside and outside control room's door of relay control room with display control section.
Switch cubicle surface acoustic wave SAW temp measuring system the most according to claim 3, is characterized in that described display control section, Its structure includes shell A, antenna, film face-plate, charactron, run indicator, alarm indicator, film key, A flat cable Interface, buzzer, system upgrade interface;Wherein antenna is arranged on the top of shell A, is coated with on the front surface of this shell A Film face-plate, is used for displays temperature value parameter in shell A built with 6 groups of charactrons, this charactron, is provided with 5 on film face-plate Individual film key, this film key arranges parameter for inquiry, sets run indicator and alarm indicator by film key, Setting A flat cable interface on the rear surface of shell A, this A flat cable interface is used for and the B in controller collection and power pack Flat cable interface connects, and is provided with buzzer and system upgrade interface in the bottom of shell A;Display control section also includes one Microprocessor, a signal output part of this microprocessor connects with the signal input part of Zigbee wireless module, Zigbee without The signal output part of wire module connects 2.4GHz antenna;
During work, each SAW Temperature Sensors that A flat cable interface controller collection and power pack transmit Temperature information, changes through microprocessor analysis, shows on charactron;Parameter can be carried out by thin film and inquiry is set, When temperature exceedes the threshold value of setting, and alarm indicator will flash, buzzer call prompting user.
CN201410358020.6A 2014-07-25 2014-07-25 Switch cubicle surface acoustic wave SAW temp measuring system Expired - Fee Related CN104132748B (en)

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Families Citing this family (5)

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CN105698962A (en) * 2014-11-24 2016-06-22 国网河南省电力公司平顶山供电公司 Teletransmission resonance-type SAW (surface acoustic wave) temperature sensing device used for high-voltage equipment
CN104729584B (en) * 2015-03-12 2017-10-03 常州智梭传感科技有限公司 GIS switch cubicle on-line detecting systems based on surface acoustic wave
CN105823565A (en) * 2016-04-18 2016-08-03 绵阳市睿钛科技有限公司 RFID passive sensing device used for measuring contact temperature of power switch cabinet
CN106248244A (en) * 2016-08-04 2016-12-21 珠海市科宏电子科技有限公司 A kind of passive and wireless real time temperature monitoring system
CN107884091A (en) * 2017-12-10 2018-04-06 国家电网公司 Wireless passive sonic surface wave monitoring device of switch cabinet temperature

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