CN106248244A - A kind of passive and wireless real time temperature monitoring system - Google Patents
A kind of passive and wireless real time temperature monitoring system Download PDFInfo
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- CN106248244A CN106248244A CN201610631890.5A CN201610631890A CN106248244A CN 106248244 A CN106248244 A CN 106248244A CN 201610631890 A CN201610631890 A CN 201610631890A CN 106248244 A CN106248244 A CN 106248244A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/22—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects
- G01K11/26—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects of resonant frequencies
- G01K11/265—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects of resonant frequencies using surface acoustic wave [SAW]
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Acoustics & Sound (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The present invention proposes a kind of passive and wireless real time temperature monitoring system scheme, purpose is to realize flexible, good environmental adaptability passive, safe, easy for installation and cost rational monitoring temperature scheme, its concrete technology contents is as follows: including data monitor center and some monitoring sub-stations being connected with this data monitor center by network, those monitoring sub-stations are distributed in each monitoring field；This monitoring sub-station has: some piezoelectric type temperature sensors, and it has a piezoelectric substrate, and the ELECTROMAGNETIC REFLECTION grid be located in this piezoelectric substrate and interdigital transducer, and this interdigital transducer connects antenna；Some Temperature samplers, it has RS485 EBI and some radio-frequency antennas, and those radio-frequency antennas send radio-frequency pulse to this piezoelectric type temperature sensor and receive feedback；Some temperature pre-warning terminals, it is connected to obtain temperature information with this Temperature sampler by RS485 bus, carries out showing Huo and carrying out data feedback by data acquisition unit to data monitor center after Treatment Analysis.
Description
Technical field
The present invention relates to a kind of passive and wireless real time temperature monitoring system.
Background technology
Along with power customer to the safety of supply of electric power, reliability, successional improve constantly, electric power primary equipment mistake
Load operation, superperiod maintenance even cannot the phenomenon such as interruption maintenance generally exist.In running, electric power primary equipment office
The phenomenons such as portion is overheated, overtemperature, insulation damages happen occasionally, and the equipment of causing burns out even major accident；Cause system blackout, danger
And power grid security, cause heavy economic losses to for electricity consumption both sides.By the analysis to a large amount of electric power accidents, cause power supply unit
The immediate cause of fault is mainly that cable intermediate joint fabricating quality is bad, crimp head is tight, contact resistance is excessive, longtime running
Cause that end is overheated, burn insulation etc..If able to when power equipment runs to the various easy parts (tools producing heating
Body position includes: conductive bus bar joint, high-voltage switch contact, chopper switch, the access lines joint etc. of transformator) carry out in real time
Monitoring, it will find potential faults in advance, take maintenance measure in time, make the accident of power equipment be reduced to minimum.
Online temperature monitoring system grasps power equipment health status in good time, finds in time, eliminates power equipments defect, protects
The safe and reliable operation of card power equipment, ensures user security reliable power supply, runs power system security now urgent
Important.
Tradition thermometric scheme problems faced has:
1) the thermometric modes such as conventional thermocouple, thermal resistance, semiconductor temperature sensor, need plain conductor to transmit signal, absolutely
Edge performance it cannot be guaranteed that；
2) fibre optic temperature sensor uses fiber optic transmission temperature signal, and optical fibers has the insulating properties of excellence, it is possible to
High pressure in isolating switch cabinet, therefore fibre optic temperature sensor can be mounted directly on the high-voltage contact in switch cubicle, accurately
Measure the running temperature of high-voltage contact, it is achieved the on-line monitoring of switch cubicle contact running temperature.But, optical fiber has easy to break, easily
The characteristics such as disconnected, non-refractory.It is easily caused optical fiber creeping discharge so that insulating properties reduces after accumulation dust, and by switch cabinet structure
Impact, connects up difficulty bigger in cabinet.It addition, the cost of optical fiber temperature-measurement is the most of a relatively high.
3) infrared measurement of temperature is contactless temperature-measuring, easily by environment and the interference of electromagnetic field around, the additionally sky in switch cubicle
Between the narrowest and small, it is impossible to installation infrared temperature probe (because probe must keep certain safe distance with testee, and needs
Will just surface to testee), it is desirable to measured point can there is no coverage in the visual field, and surface is totally to guarantee standard
Really property.
4) active radio temperature sensor size is the most relatively large and need to often change battery, and system maintenance becomes
This is higher.Meanwhile, battery is unsuitable for working at high operating temperatures, the working environment of especially greater than 150 degrees Celsius.
Summary of the invention
For overcoming defect of the prior art, the present invention proposes a kind of passive and wireless real time temperature monitoring system scheme, mesh
Be realize passive, safe, easy for installation flexibly, good environmental adaptability and cost rational monitoring temperature scheme, it is concrete
Technology contents is as follows:
One of passive and wireless real time temperature monitoring system scheme of the present invention, it includes data monitor center and some and these data
The monitoring sub-station that Surveillance center is connected by network, those monitoring sub-stations are distributed in each monitoring field；This monitoring sub-station has:
Some piezoelectric type temperature sensors；This piezoelectric type temperature sensor has piezoelectric substrate, and is located in this piezoelectric substrate
ELECTROMAGNETIC REFLECTION grid and interdigital transducer, this interdigital transducer connects antenna；
Some Temperature samplers；This Temperature sampler has RS485 EBI and some radio-frequency antennas, those radio-frequency antennas to
This piezoelectric type temperature sensor sends radio-frequency pulse and receives feedback；
Some temperature pre-warning terminals；This temperature pre-warning terminal has display screen, and it is by RS485 bus with this Temperature sampler even
Connect to obtain temperature information, carry out showing Huo and by data acquisition unit to data monitor center number after Treatment Analysis
According to feedback.
In the middle of one or more embodiments of the invention, this monitoring sub-station has field management terminal, for this locality
The temperature data of multiple temperature pre-warning terminals is managed collectively and shows.
In the middle of one or more embodiments of the invention, this Temperature sampler is adsorbed in Devices to test by strong magnetic mode
Iron-clad on.
In the middle of one or more embodiments of the invention, this temperature pre-warning terminal has been used for each piezoelectric type temperature sensing
Device, the data management of Temperature sampler and to feedback temperature data resolve, it is additionally provided with for temperature acquisition parameter
The operation key mapping set and the data-interface of externally interconnection.
In the middle of one or more embodiments of the invention, this data monitor center is provided with for special APP and WEB mode
The data-interface accessed.
The two of the passive and wireless real time temperature monitoring system scheme of the present invention, it includes
Some piezoelectric type temperature sensors；This piezoelectric type temperature sensor has piezoelectric substrate, and is located in this piezoelectric substrate
ELECTROMAGNETIC REFLECTION grid and interdigital transducer, this interdigital transducer connects antenna；
Some Temperature samplers；This Temperature sampler has RS485 EBI and some radio-frequency antennas, those radio-frequency antennas to
This piezoelectric type temperature sensor sends radio-frequency pulse and receives feedback；
Some temperature pre-warning terminals；This temperature pre-warning terminal has display screen, and it is by RS485 bus with this Temperature sampler even
Connect to obtain temperature information, carry out showing Huo and carrying out data feedback by data acquisition unit to host computer after Treatment Analysis.
In the middle of one or more embodiments of the invention, this Temperature sampler is adsorbed in Devices to test by strong magnetic mode
Iron-clad on.
In the middle of one or more embodiments of the invention, this temperature pre-warning terminal has been used for each piezoelectric type temperature sensing
Device, the data management of Temperature sampler and to feedback temperature data resolve, it is additionally provided with for temperature acquisition parameter
The operation key mapping set and the data-interface of externally interconnection.
The three of the passive and wireless real time temperature monitoring system scheme of the present invention, it includes
Some piezoelectric type temperature sensors；This piezoelectric type temperature sensor has piezoelectric substrate, and is located in this piezoelectric substrate
ELECTROMAGNETIC REFLECTION grid and interdigital transducer, this interdigital transducer connects antenna；
Some Temperature samplers；This Temperature sampler has RS485 EBI and some radio-frequency antennas, those radio-frequency antennas to
This piezoelectric type temperature sensor sends radio-frequency pulse and receives feedback；
Some temperature pre-warning terminals；This temperature pre-warning terminal has display screen, and it is by RS485 bus with this Temperature sampler even
Connect to obtain temperature information, carry out showing Huo and carrying out data feedback by data acquisition unit to host computer after Treatment Analysis；
And
Field management terminal；This field management terminal is for unifying pipe to the temperature data of local multiple temperature pre-warning terminals
Reason and display.
In the middle of one or more embodiments of the invention, this temperature pre-warning terminal has been used for each piezoelectric type temperature sensing
Device, the data management of Temperature sampler and to feedback temperature data resolve, it is additionally provided with for temperature acquisition parameter
The operation key mapping set and the data-interface of externally interconnection.
The invention has the beneficial effects as follows:
1, piezoelectric type temperature sensor uses passive induction mode, it is not necessary to battery drives, and decreases the maintenance that battery altering brings
Cost, will not impact ecological environment simultaneously.
2, wireless temperature sampling mode is without line on measured point or related support structure, sensor and the equipment of reception
Between without electrical link, it is achieved thereby that high_voltage isolation, ensure equipment safety operation.
3, piezoelectric type temperature sensor volume little and and harvester between data be wirelessly transferred, easy for installation flexibly, be not subject to
Switch cabinet structure and spacial influence.
4, piezoelectric type temperature sensor can by coupling software be corrected after compensate for sensor production during
Deviation.Piezoelectric type temperature sensor can be debugged in the temperature in any operating temperature range, will not be affected by seasonal factor.
Under normal circumstances, piezoelectric type temperature sensor is only debugged once after mounting, and keeps being not required to for many years correct again.Meanwhile, dust
The environmental factorss such as accumulation will not produce impact to piezoelectric type temperature sensor thermometric.
5, the price of piezoelectric type temperature sensor is relatively low compared with other tradition thermometric modes, meanwhile, and the work side of passive and wireless
Formula makes the installation of native system, maintenance cost be substantially reduced.
Accompanying drawing explanation
Fig. 1 is the system framework schematic diagram of the embodiment of the present invention one.
Fig. 2 is the system framework schematic diagram of the embodiment of the present invention two.
Fig. 3 is the system framework schematic diagram of the embodiment of the present invention three.
Fig. 4 is the structural representation of the temperature pre-warning terminal of the present invention.
Fig. 5 is the structural representation of the Temperature sampler of the present invention.
Fig. 6 is the built-in function organigram of the piezoelectric type temperature sensor of the present invention.
Fig. 7 is the overall structure schematic diagram (tuning-fork-type) of the piezoelectric type temperature sensor of the present invention.
Fig. 8 is the overall structure schematic diagram (snap-type) of the piezoelectric type temperature sensor of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the application scheme is further described.
See accompanying drawing 1, accompanying drawing 4 to 8, embodiments of the invention one:
A kind of passive and wireless real time temperature monitoring system, it includes data monitor center 1 and some leads to this data monitor center 1
Crossing the monitoring sub-station 2 that network connects, those monitoring sub-stations 2 are distributed in each monitoring field；Described network can be local network LAN,
Or wide area WAN, this monitoring sub-station 2 has:
Some piezoelectric type temperature sensors 21；This piezoelectric type temperature sensor 21 has piezoelectric substrate 2101, and is located at this piezoelectricity
ELECTROMAGNETIC REFLECTION grid 2102 in basic unit 2101 and interdigital transducer 2103, this interdigital transducer 2103 connects antenna, specifically joins
See accompanying drawing 6
Some Temperature samplers 22；This Temperature sampler 22 has RS485 EBI 221 and some radio-frequency antennas 222, those
Radio-frequency antenna 222 sends radio-frequency pulse to this piezoelectric type temperature sensor 21 and receives feedback；
Some temperature pre-warning terminals 23；This temperature pre-warning terminal 23 has display screen 231, and it is by RS485 bus and this temperature
Harvester 22 connects to obtain temperature information, carries out showing Huo and being supervised to data by data acquisition unit 24 after Treatment Analysis
Control center 1 carries out data feedback；And
Field management terminal 25, for being managed collectively the temperature data of local multiple temperature pre-warning terminals 23 and show.
Described data monitor center 1 realizes the collection to field apparatus temperature information, stores and manage, and provides realization to appoint
Equipment remote online monitoring temperature, analysis and the early warning in meaning place, arbitrarily access the Internet.
This Temperature sampler 22 is adsorbed on the iron-clad of Devices to test by strong magnetic mode, specifically, and can be in temperature acquisition
Being provided with magnetic block 223 on the installed surface of device 22, see accompanying drawing 5, what Temperature sampler 22 was placed in equipment iron-clad arbitrarily permits
Being permitted position, this mounting means advantage can conveniently be overhauled without having a power failure and safeguard, facilitates management personnel to operate；And
And, Temperature sampler puts 2 wave interference that can shield outside in iron-clad.
Specifically, the Temperature sampler 22 in the present embodiment is set to: when its radio-frequency pulse frequency sent and piezoelectric type
When frequency that temperature sensor 21 is preset is identical, piezoelectric type temperature sensor 21 respond to the radiofrequency signal with frequency and by fork
Finger transducer 2103 is at one surface wave of surface activation of piezoelectric substrate 2101, and the frequency of this surface wave receives sensor self
The impact of temperature thus change (being reflected by electromagnetism anti-body grid 2102), thus carry after sensor antenna feedback injection
The temperature information of sensor；Just because of frequency by the mechanism of variations in temperature so that temperature data measurement is achieved.
This temperature pre-warning terminal 23 be used for each piezoelectric type temperature sensor 21, Temperature sampler 22 data management with
And the temperature data of feedback is resolved, it is additionally provided with the operation key mapping 232 for the setting of temperature acquisition parameter, instruction device
The display lamp 233 of running status and the data-interface of externally interconnection.
This data monitor center 1 is provided with the data-interface accessed for special APP and WEB mode, and special APP can be loaded into
On smart mobile phone, panel computer and computer equipment.
Construction features according to distinct device and temperature detection demand, can use tuning-fork-type piezoelectricity as shown in Figure 7
Formula temperature sensor 21a, it is had installation base plate 211, this installation base plate 212 offers U-shaped mouth, is tightened in finger by screw
Dingan County's holding position；Or snap-type piezoelectric type temperature sensor 21b as shown in Figure 8 can be adopted, it has installation buckle 213；
And there is the sensor of other installation form of identical piezoelectricity functional configuration.
See accompanying drawing 2, accompanying drawing 4 to 8, embodiments of the invention two:
A kind of passive and wireless real time temperature monitoring system, it includes
Some piezoelectric type temperature sensors 21；This piezoelectric type temperature sensor 21 has piezoelectric substrate 2101, and is located at this piezoelectricity
ELECTROMAGNETIC REFLECTION grid 2102 in basic unit 2101 and interdigital transducer 2103, this interdigital transducer 2103 connects antenna；
Some Temperature samplers 22；This Temperature sampler 22 has RS485 EBI 221 and some radio-frequency antennas 222, those
Radio-frequency antenna 222 sends radio-frequency pulse to this piezoelectric type temperature sensor 21 and receives feedback；
Some temperature pre-warning terminals 23；This temperature pre-warning terminal 23 has display screen 231, and it is by RS485 bus and this temperature
Harvester 22 connects to obtain temperature information, shows after Treatment Analysis.
This Temperature sampler 22 is adsorbed on the iron-clad of Devices to test by strong magnetic mode, specifically, and can be in temperature acquisition
Being provided with magnetic block 223 on the installed surface of device 22, see accompanying drawing 5, what Temperature sampler 22 was placed in equipment iron-clad arbitrarily permits
Being permitted position, this mounting means advantage can conveniently be overhauled without having a power failure and safeguard, facilitates management personnel to operate；And
And, Temperature sampler puts 2 wave interference that can shield outside in iron-clad.
Specifically, the Temperature sampler 22 in the present embodiment is set to: when its radio-frequency pulse frequency sent and piezoelectric type
When frequency that temperature sensor 21 is preset is identical, piezoelectric type temperature sensor 21 respond to the radiofrequency signal with frequency and by fork
Finger transducer 2103 is at one surface wave of surface activation of piezoelectric substrate 2101, and the frequency of this surface wave receives sensor self
The impact of temperature thus change (being reflected by electromagnetism anti-body grid 2102), thus carry after sensor antenna feedback injection
The temperature information of sensor；Just because of frequency by the mechanism of variations in temperature so that temperature data measurement is achieved.
This temperature pre-warning terminal 23 be used for each piezoelectric type temperature sensor 21, Temperature sampler 22 data management with
And the temperature data of feedback is resolved, it is additionally provided with the operation key mapping 232 for the setting of temperature acquisition parameter, instruction device
The display lamp 233 of running status and the data-interface of externally interconnection.
See accompanying drawing 3, accompanying drawing 4 to 8, embodiments of the invention three:
A kind of passive and wireless real time temperature monitoring system scheme, it includes
Some piezoelectric type temperature sensors 21；This piezoelectric type temperature sensor 21 has piezoelectric substrate 2101, and is located at this piezoelectricity
ELECTROMAGNETIC REFLECTION grid 2102 in basic unit 2101 and interdigital transducer 2103, this interdigital transducer 2103 connects antenna；
Some Temperature samplers 22；This Temperature sampler 22 has RS485 EBI 221 and some radio-frequency antennas 222, those
Radio-frequency antenna sends radio-frequency pulse to this piezoelectric type temperature sensor and receives feedback；
Some temperature pre-warning terminals 23；This temperature pre-warning terminal has display screen, and it is by RS485 bus and this Temperature sampler
Connect to obtain temperature information, carry out showing Huo and by data acquisition unit 24 to field management terminal 25 after Treatment Analysis
Carry out data feedback；And
Field management terminal 25；This field management terminal 25 is for carrying out the temperature data of local multiple temperature pre-warning terminals 23
Unified management and display.
Specifically, the Temperature sampler 22 in the present embodiment is set to: when its radio-frequency pulse frequency sent and piezoelectric type
When frequency that temperature sensor 21 is preset is identical, piezoelectric type temperature sensor 21 respond to the radiofrequency signal with frequency and by fork
Finger transducer 2103 is at one surface wave of surface activation of piezoelectric substrate 2101, and the frequency of this surface wave receives sensor self
The impact of temperature thus change (being reflected by electromagnetism anti-body grid 2102), thus carry after sensor antenna feedback injection
The temperature information of sensor；Just because of frequency by the mechanism of variations in temperature so that temperature data measurement is achieved.
This temperature pre-warning terminal 23 be used for each piezoelectric type temperature sensor 21, Temperature sampler 22 data management with
And the temperature data of feedback is resolved, it is additionally provided with the operation key mapping 232 for the setting of temperature acquisition parameter, instruction device
The display lamp 233 of running status and the data-interface of externally interconnection.
Above-mentioned preferred implementation should be regarded as the illustration of the application scheme embodiment, all and the application scheme thunder
Deduce with, approximation or the technology made based on this, replace, improvement etc., be regarded as the protection domain of this patent.
Claims (10)
1. a passive and wireless real time temperature monitoring system, it is characterised in that include data monitor center and some and these data
The monitoring sub-station that Surveillance center is connected by network, those monitoring sub-stations are distributed in each monitoring field；This monitoring sub-station has:
Some piezoelectric type temperature sensors；This piezoelectric type temperature sensor has piezoelectric substrate, and is located in this piezoelectric substrate
ELECTROMAGNETIC REFLECTION grid and interdigital transducer, this interdigital transducer connects antenna；
Some Temperature samplers；This Temperature sampler has RS485 EBI and some radio-frequency antennas, those radio-frequency antennas to
This piezoelectric type temperature sensor sends radio-frequency pulse and receives feedback；
Some temperature pre-warning terminals；This temperature pre-warning terminal has display screen, and it is by RS485 bus with this Temperature sampler even
Connect to obtain temperature information, carry out showing Huo and by data acquisition unit to data monitor center number after Treatment Analysis
According to feedback.
Passive and wireless real time temperature monitoring system the most according to claim 1, it is characterised in that: this monitoring sub-station has existing
Field management terminal, for being managed collectively the temperature data of local multiple temperature pre-warning terminals and show.
Passive and wireless real time temperature monitoring system the most according to claim 1, it is characterised in that: this Temperature sampler passes through
Strong magnetic mode is adsorbed on the iron-clad of Devices to test.
Passive and wireless real time temperature monitoring system the most according to claim 1, it is characterised in that: this temperature pre-warning terminal is used
In completing each piezoelectric type temperature sensor, the data management of Temperature sampler and the temperature data of feedback being resolved, its
It is additionally provided with the operation key mapping set for temperature acquisition parameter and the data-interface of externally interconnection.
5. according to the passive and wireless real time temperature monitoring system described in Claims 1-4 any one, it is characterised in that: this number
The data-interface accessed for special APP and WEB mode it is provided with according to Surveillance center.
6. a passive and wireless real time temperature monitoring system, it is characterised in that: include
Some piezoelectric type temperature sensors；This piezoelectric type temperature sensor has piezoelectric substrate, and is located in this piezoelectric substrate
ELECTROMAGNETIC REFLECTION grid and interdigital transducer, this interdigital transducer connects antenna；
Some Temperature samplers；This Temperature sampler has RS485 EBI and some radio-frequency antennas, those radio-frequency antennas to
This piezoelectric type temperature sensor sends radio-frequency pulse and receives feedback；
Some temperature pre-warning terminals；This temperature pre-warning terminal has display screen, and it is by RS485 bus with this Temperature sampler even
Connect to obtain temperature information, carry out showing Huo and carrying out data feedback by data acquisition unit to host computer after Treatment Analysis.
Passive and wireless real time temperature monitoring system the most according to claim 6, it is characterised in that: this Temperature sampler passes through
Strong magnetic mode is adsorbed on the iron-clad of Devices to test.
Passive and wireless real time temperature monitoring system the most according to claim 6, it is characterised in that: this temperature pre-warning terminal is used
In completing each piezoelectric type temperature sensor, the data management of Temperature sampler and the temperature data of feedback being resolved, its
It is additionally provided with the operation key mapping set for temperature acquisition parameter and the data-interface of externally interconnection.
9. a passive and wireless real time temperature monitoring system, it is characterised in that: include
Some piezoelectric type temperature sensors；This piezoelectric type temperature sensor has piezoelectric substrate, and is located in this piezoelectric substrate
ELECTROMAGNETIC REFLECTION grid and interdigital transducer, this interdigital transducer connects antenna；
Some Temperature samplers；This Temperature sampler has RS485 EBI and some radio-frequency antennas, those radio-frequency antennas to
This piezoelectric type temperature sensor sends radio-frequency pulse and receives feedback；
Some temperature pre-warning terminals；This temperature pre-warning terminal has display screen, and it is by RS485 bus with this Temperature sampler even
Connect to obtain temperature information, carry out showing Huo and carrying out data feedback by data acquisition unit to host computer after Treatment Analysis；
And
Field management terminal；This field management terminal is for unifying pipe to the temperature data of local multiple temperature pre-warning terminals
Reason and display.
Passive and wireless real time temperature monitoring system the most according to claim 9, it is characterised in that: this temperature pre-warning terminal
For completing each piezoelectric type temperature sensor, the data management of Temperature sampler and the temperature data of feedback being resolved,
It is additionally provided with the operation key mapping set for temperature acquisition parameter and the data-interface of externally interconnection.
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| CN111257380A (en) * | 2020-01-16 | 2020-06-09 | 武汉理工大学 | Passive wireless temperature crack binary sensor array based on microstrip antenna |
| CN111257380B (en) * | 2020-01-16 | 2021-09-10 | 武汉理工大学 | Passive wireless temperature crack binary sensor array based on microstrip antenna |
| CN113847994A (en) * | 2021-09-03 | 2021-12-28 | 杭州宇诺电子科技有限公司 | Passive wireless temperature monitoring system |
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Application publication date: 20161221 |