CN108692824A - A kind of passive wireless acoustic surface wave temperature sensor - Google Patents
A kind of passive wireless acoustic surface wave temperature sensor Download PDFInfo
- Publication number
- CN108692824A CN108692824A CN201810236492.2A CN201810236492A CN108692824A CN 108692824 A CN108692824 A CN 108692824A CN 201810236492 A CN201810236492 A CN 201810236492A CN 108692824 A CN108692824 A CN 108692824A
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- temperature sensor
- heat
- conducting plate
- surface wave
- shell
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- 239000002184 metal Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 238000010897 surface acoustic wave method Methods 0.000 claims description 3
- 229920006351 engineering plastic Polymers 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 239000000428 dust Substances 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/36—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using magnetic elements, e.g. magnets, coils
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The present invention provides a kind of passive wireless acoustic surface wave temperature sensor, including:The heat-conducting plate being fixed on testee, mounting circuit boards on the heat-conducting plate are equipped with SAW Temperature Sensors chip, inductance, antenna and shell on the circuit board;The SAW Temperature Sensors chip both ends respectively connect an inductance, to improve the Q values of sensor.The present invention have it is small, light-weight, processability of product structure is good, can work in the rugged environments such as high-intensity magnetic field, intense radiation, high temperature, high humidity, dust.It is suitable for the monitoring temperature of the high voltage electric equipments such as high-tension switch cabinet, transformer, high-tension cable, motor.
Description
Technical field
It is the present invention relates to temperature sensor field, more particularly to a kind of using the passive of SAW Temperature Sensors chip
Radio temperature sensor.
Background technology
High-tension switch cabinet in power equipment is in During Process of Long-term Operation, the positions such as internal breaker and connection plug
It can cause to generate heat due to contact resistance is excessive because of manufacture, transport, the bad and aging of installation, if the temperature of these heating positions can not
Monitoring, cannot overhaul in time, then eventually results in the fire incident generation for burning switchgear.Therefore realize that temperature online is real-time
Monitoring becomes the important means for ensureing high-tension switch cabinet safe operation.
Traditional temp measuring system is for example infrared, optical fiber, active radio etc. exist in safety, stability, real-time etc.
Certain technological deficiency, high failure rate cannot meet requirement.Therefore, the passive and wireless based on surface acoustic wave sensor is surveyed
Temperature is increasingly becoming the mainstream thermometric mode of high-tension switch cabinet.
Existing SAW Temperature Sensors circuit only connects between antenna and SAW Temperature Sensors chip
For one inductance to ground, the electromagnetic waveforms of output are poor, cannot be satisfied the needs of high-acruracy survey.
Invention content
The present invention provides a kind of passive wireless acoustic surface wave temperature sensors, it is intended to which solving traditional temp measuring system can not expire
The technological deficiency that sufficient high-acruracy survey needs.
To achieve the above object, the present invention adopts the following technical scheme that:A kind of passive wireless acoustic surface wave temperature sensor,
Including:The heat-conducting plate being fixed on testee, mounting circuit boards on the heat-conducting plate install surface acoustic wave temperature on the circuit board
Spend sensor chip, inductance, antenna and shell;The SAW Temperature Sensors chip both ends respectively connect an inductance, to
Improve the Q values of sensor.
Preferably, the heat-conducting plate is metal heat-conducting plate.
Preferably, described heat-conducting plate one end is installation slot, the other end is equipped with multiple location holes.
Preferably, the SAW Temperature Sensors chip, inductance and antenna welding are on circuit boards;The electricity
Road plate is equipped with multiple location holes corresponding with heat-conducting plate location hole.
Preferably, the shell is heat-resistant fireproof engineering plastics shell, the shell is equipped with towards circuit board direction
Fastener is tightened together shell with circuit board by fastener and location hole.
Preferably, the antenna is spring antenna.
The technical solution adopted by the present invention is that the temperature of testee, SAW Temperature Sensors are conducted by heat-conducting plate
Chip is used for perceiving the temperature of testee, and capturing electromagnetic wave by spring antenna is used as work capacity, while returning to carrying temperature
The electromagnetic wave of information is spent, and temperature sensor is made through the above way, solving traditional temperature sensor cannot gather around simultaneously
There is passive, wireless characteristic.
The advantage of the invention is that:An inductance is connected to ground, with tradition in the SAW Temperature Sensors chip other end
The sensor of type is compared, and the matching of chip is improved, and chip interior electrode is made to be connected to high-pressure side, to play protection
Effect.
The present invention have it is small, light-weight, processability of product structure is good, can be in high-intensity magnetic field, intense radiation, high temperature, high humidity, dust
It works in equal rugged environments.It is suitable for the temperature of the high voltage electric equipments such as high-tension switch cabinet, transformer, high-tension cable, motor
Monitoring.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and detailed description:
Fig. 1 is the general structure schematic diagram of the present invention;
Fig. 2 is shell mechanism schematic diagram;
Fig. 3 is circuit board mounting structure schematic diagram;
Fig. 4 is SAW Temperature Sensors functional block diagram of the present invention;
Fig. 5 is traditional SAW Temperature Sensors functional block diagram.
Specific implementation mode
The present invention is illustrated with reference to Fig. 1 to Fig. 5, a kind of passive wireless acoustic surface wave temperature sensor, including one
The heat-conducting plate 1 being fixed on testee, heat-conducting plate one end are installation slots 8, and the other end is equipped with a circuit board 2, the circuit board
On be welded with SAW Temperature Sensors chip 3, inductance 9, antenna 4 for detecting testee temperature, the circuit board 2
On be covered with guard shield 5;The heat-conducting plate is metal heat-conducting plate.
Wherein, 9 number of the inductance is 2, respectively simultaneously with the both ends signal pins of SAW Temperature Sensors chip 3
Even,
Four corners region is equipped with 4 location holes 7, four location holes on its corresponding circuit board, heat-conducting plate on circuit board
On also be provided with 4 corresponding location holes.
The shell is heat-resisting material, above has 4 positioning pins 6,4 positioning pins are corresponding with 4 location holes of circuit board;
In this manner it is possible to by the positioning pin 6, the location hole 7 on circuit board, the location hole on heat-conducting plate leads shell and circuit board
Hot plate fastens together.
The material that the metal heat-conducting plate is high using thermal coefficient, the coefficient of expansion is low is made, when testee changes, metal
Heat-conducting plate can quickly transmit heat.
Through the above way by metal heat-conducting plate, circuit board, SAW Temperature Sensors chip, inductance, antenna, shell
It combines and temperature sensor is made, passive, wireless characteristic cannot be possessed simultaneously by solving conventional temperature sensor, simultaneously
Meets the needs of high-resolution hydrocode.
The present invention have it is small, light-weight, processability of product structure is good, be suitable for high-tension switch cabinet, transformer, high-voltage electricity
The monitoring temperature of the high voltage electric equipments such as cable, motor.
Claims (6)
1. a kind of passive wireless acoustic surface wave temperature sensor, it is characterised in that:The temperature sensor includes being fixed on measured object
Heat-conducting plate on body is equipped with circuit board on the heat-conducting plate, SAW Temperature Sensors chip, electricity is equipped on the circuit board
Sense, antenna and shell, SAW Temperature Sensors chip both ends respectively connect an inductance;The shell is located at circuit
On plate.
2. passive wireless acoustic surface wave temperature sensor according to claim 1, it is characterised in that:The heat-conducting plate is
Metal heat-conducting plate.
3. passive wireless acoustic surface wave temperature sensor according to claim 2, it is characterised in that:The heat-conducting plate one
End is installation slot, and the other end is equipped with multiple location holes.
4. passive wireless acoustic surface wave temperature sensor according to claim 3, it is characterised in that:The surface acoustic wave
Temperature sensor chip, inductance and antenna welding are on circuit boards;The circuit board is equipped with multiple and heat-conducting plate location hole
Corresponding location hole.
5. passive wireless acoustic surface wave temperature sensor according to claim 3, it is characterised in that:The shell is resistance to
High temperature flame-proof engineering plastics shell, the shell are equipped with fastener towards circuit board direction, will be outer by fastener and location hole
Shell tightens together with circuit board.
6. according to the passive wireless acoustic surface wave temperature sensor described in claims 1-5 any one, it is characterised in that:Institute
It is spring antenna to state antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810236492.2A CN108692824A (en) | 2018-03-21 | 2018-03-21 | A kind of passive wireless acoustic surface wave temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810236492.2A CN108692824A (en) | 2018-03-21 | 2018-03-21 | A kind of passive wireless acoustic surface wave temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108692824A true CN108692824A (en) | 2018-10-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810236492.2A Withdrawn CN108692824A (en) | 2018-03-21 | 2018-03-21 | A kind of passive wireless acoustic surface wave temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108692824A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708774A (en) * | 2019-01-24 | 2019-05-03 | 上海置信电气股份有限公司 | A kind of passive wireless temperature sensor of gasket construction |
| CN111525276A (en) * | 2020-04-13 | 2020-08-11 | Oppo广东移动通信有限公司 | Electronic device |
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| CN112316248A (en) * | 2020-10-27 | 2021-02-05 | 上海理工大学 | Wireless passive injection liquid infusion tube state monitoring method based on surface acoustic wave technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708774A (en) * | 2019-01-24 | 2019-05-03 | 上海置信电气股份有限公司 | A kind of passive wireless temperature sensor of gasket construction |
| CN109708774B (en) * | 2019-01-24 | 2024-03-01 | 上海置信智能电气有限公司 | Passive wireless temperature sensor with gasket structure |
| CN111525276A (en) * | 2020-04-13 | 2020-08-11 | Oppo广东移动通信有限公司 | Electronic device |
| CN111525276B (en) * | 2020-04-13 | 2022-01-04 | Oppo广东移动通信有限公司 | Electronic equipment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181023 |