CN102980678A - Wireless passive temperature measuring device - Google Patents
Wireless passive temperature measuring device Download PDFInfo
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- CN102980678A CN102980678A CN2012104913005A CN201210491300A CN102980678A CN 102980678 A CN102980678 A CN 102980678A CN 2012104913005 A CN2012104913005 A CN 2012104913005A CN 201210491300 A CN201210491300 A CN 201210491300A CN 102980678 A CN102980678 A CN 102980678A
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- 238000010897 surface acoustic wave method Methods 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
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Abstract
The invention discloses a wireless passive temperature measuring device. The device is characterized by comprising a host and a sensor node, wherein a surface acoustic wave (SAW) sensor is arranged in the sensor node and maintains electric energy for operation by using wireless electromagnetic wave energy. Due to adoption of the structure, the device has the advantages that the defect that power is not easy to supply in a wireless active temperature measuring mode is overcome; the measurement is convenient and rapid; and the cost is low and the device is suitable for mass production and transformation.
Description
Technical field
The present invention relates to the wireless temperature measurement field, particularly a kind of wireless for no reason at all temperature measuring equipment.
Background technology
Along with the fast development of economy, electricity supply increases day by day, and modern electric develops rapidly towards high voltage, large capacity, and the safety of electric system and efficient operation are related to the development of whole national economy and stablizing of people's lives.
For the safe operation of electrical network, and the optimum use scheme implementation of electric system resource, effective method is that power equipment is monitored, and temperature then is one of most important data that need most monitoring.Power equipment temperature rise mainly is to be caused by the electric current that flows through cable, and when having node to be short-circuited in the power equipment or during insulation ag(e)ing, what show is exactly this place's local pyrexia, temperature anomaly raises; And for normal current in the cable, temperature then can remain on certain level.Therefore, by the monitoring to the power equipment temperature, can know the load condition of electric system operation.By integrating the electric network information resource, can realize the maximization of power information and resource sharing, hidden danger can be found and process to the very first time in generation hidden danger just, and in the situation that guarantees the power system security operation, improve the efficient that electric power network transmits electric power.
What at present, general electric system temperature monitoring used all is wireless active thermometric scheme.Namely adopt single-chip microcomputer, rf chip, temperature sensor to consist of, to realize temperature survey and Wireless Data Transmission.But must provide power supply during the work of such sensor node, usually adopting in actual applications powered battery or mutual inductor small transformers to get can power supply mode.And there is the artificial trouble of regularly changing battery in powered battery under the particular surroundingss such as high pressure, high temperature, and battery summer high-temperature resistance relatively poor, the danger that battery at high temperature also can be blasted when serious brings impact for the operation of power department; Small transformers is got and can power supply mode be had the problem that supplies electrical stability, it can obtain electric energy by the exchange current on the induction high voltage bus, the electricity of obtaining is alternating current, it is just available to become direct current through the current rectifying and wave filtering circuit processing of rear class, ripple composition outwardness in the direct current affects the stability of chip operation.Under extreme case, if the high voltage bus electric current is less, electric energy can't take out simultaneously, and sensor node quits work, if bus current is excessive, then burns out small transformers easily until burn out sensor node.Moreover the small transformers volume is large, be not easy to install, and the position of deploying troops on garrison duty is larger on getting the energy efficiency impact, lacks general adaptability.
For above-mentioned problem, a kind of novel wireless temperature measuring device is provided, be the problem that prior art need to solve to remedy wireless defective of having chance with the difficult power supply of thermometric mode.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of wireless for no reason at all temperature measuring equipment, to remedy the defective of the wireless difficult power supply of thermometric mode of having chance with.
For achieving the above object, technical scheme of the present invention is, a kind of wireless for no reason at all temperature measuring equipment, and it is characterized in that: described temperature measuring equipment is divided into main frame and sensor node two parts; Be provided with in the sensor node SAW temperature sensor utilize the wireless electromagnetic wave energy keep self work electric energy.
Described main frame is that single-chip microcomputer connects main frame reception transtation mission circuit.
Described sensor node is that SAW temperature sensor connecting sensor receives transtation mission circuit.
Single-chip microcomputer in the described main frame, main frame receive transtation mission circuit and are connected to respectively power supply.
A kind of wireless for no reason at all temperature measuring equipment owing to adopt above-mentioned structure, the invention has the advantages that: 1, remedied the defective that the wireless thermometric mode of having chance with is difficult for power supply; 2, measurement is convenient, fast; 3, cost is lower, is fit to large-scale production and transformation.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments;
Fig. 1 is a kind of wireless for no reason at all temperature measuring equipment structural representation block diagram of the present invention;
In Fig. 1,1, main frame; 2, sensor node; 3, single-chip microcomputer; 4, main frame receives transtation mission circuit; 5, sensor receives transtation mission circuit; 6, SAW temperature sensor; 7, power supply.
Embodiment
As shown in Figure 1, the present invention is divided into main frame 1 and sensor node 2 two parts; Be provided with in the sensor node 2 SAW temperature sensor 6 utilize the wireless electromagnetic wave energy keep self work electric energy.
Wherein main frame 1 is that single-chip microcomputer 3 connects main frame reception transtation mission circuit 4.Sensor node 2 is that SAW temperature sensor 6 connecting sensors receive transtation mission circuit 5.Single-chip microcomputer 3 in the main frame 1, main frame receive transtation mission circuit 4 and are connected to respectively power supply 7.
The present invention includes main frame 1 and sensor node 2, what sensor node 2 used is surface acoustic wave SAW temperature sensor 6.SAW temperature sensor 6 is based on the temperature sensor that the surface acoustic wave principle is made, it is a kind of medium with specific physical attribute, the surface acoustic wave of its propagation can be subjected to the modulation of environment temperature, also has simultaneously self energy storage mechanism, can with the wireless electromagnetic wave energy that the receives energy as self work, not need extraneous power supply.Than the wireless active thermometric, sensor node does not need externally fed, has saved the series of problems that externally fed brings.
Do not need regularly to change battery, avoided the danger of battery high-temperature blast, needn't be concerned about the stability of chip operation power supply, can power supply can not arranged, be difficult for contact high pressure, high temperature, the temperature monitoring that carries out under the particular surroundings such as can't contacting.Sensor node 2 and extraneous thoroughly electrical isolation use safety.Without the small transformers power taking, the smaller and more exquisite installation of sensor node 2 volumes is convenient, has saved greatly the products-hardware cost, does not also need single-chip microcomputer is carried out complicated software programming.
The above has carried out exemplary description to the present invention by reference to the accompanying drawings; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted technical solution of the present invention to carry out, or directly apply to other occasion without improvement, all within protection scope of the present invention.
Claims (4)
1. wireless for no reason at all temperature measuring equipment, it is characterized in that: described temperature measuring equipment is divided into main frame (1) and sensor node (2) two parts; Be provided with in the sensor node (2) SAW temperature sensor (6) utilize the wireless electromagnetic wave energy keep self work electric energy.
2. a kind of wireless for no reason at all temperature measuring equipment according to claim 1, it is characterized in that: described main frame (1) receives transtation mission circuit (4) for single-chip microcomputer (3) connects main frame.
3. a kind of wireless for no reason at all temperature measuring equipment according to claim 1, it is characterized in that: described sensor node (2) receives transtation mission circuit (5) for SAW temperature sensor (6) connecting sensor.
4. a kind of wireless for no reason at all temperature measuring equipment according to claim 1 and 2, it is characterized in that: the single-chip microcomputer (3) in the described main frame (1), main frame receive transtation mission circuit (4) and are connected to respectively power supply (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104913005A CN102980678A (en) | 2012-11-27 | 2012-11-27 | Wireless passive temperature measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104913005A CN102980678A (en) | 2012-11-27 | 2012-11-27 | Wireless passive temperature measuring device |
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| CN102980678A true CN102980678A (en) | 2013-03-20 |
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| CN2012104913005A Pending CN102980678A (en) | 2012-11-27 | 2012-11-27 | Wireless passive temperature measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004432A (en) * | 2015-05-20 | 2015-10-28 | 邢永安 | Wireless and passive power cable joint temperature monitoring system |
| CN107909762A (en) * | 2017-11-30 | 2018-04-13 | 国网福建省电力有限公司 | 500kV transformer fire protection alarm systems based on wireless and passive temperature sensor |
Citations (7)
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|---|---|---|---|---|
| US4249418A (en) * | 1978-04-20 | 1981-02-10 | Tokyo Shibaura Denki Kabushiki Kaisha | Temperature detector using a surface acoustic wave device |
| DE10046567A1 (en) * | 1999-09-24 | 2001-07-19 | Sentec Elektronik Gmbh | Temperature measurement system for plastics rotational molding plant includes a piezo electric crystal with a metallized structure feeding signals via an antenna to an external unit |
| CN100593700C (en) * | 2008-07-17 | 2010-03-10 | 清华大学 | A kind of SAW pressure sensor and its sensor part manufacturing method |
| CN102353473A (en) * | 2011-06-23 | 2012-02-15 | 成都赛康信息技术有限责任公司 | Wireless sensor network remote temperature online monitoring system based on surface acoustic wave |
| CN102636204A (en) * | 2012-05-08 | 2012-08-15 | 中国电子科技集团公司第五十五研究所 | Self-numbering surface acoustic wave (SAW) passive and wireless resonance type sensor |
| FR2971584A1 (en) * | 2011-02-10 | 2012-08-17 | Senseor | Passive temperature sensor, has acoustic wave resonator made of piezoelectric material and provided with metal electrodes made of alloy comprising aluminum and copper or alloy comprising aluminum, copper and element |
| CN203100928U (en) * | 2012-11-27 | 2013-07-31 | 安徽鑫龙电器股份有限公司 | Wireless passive temperature measuring device |
-
2012
- 2012-11-27 CN CN2012104913005A patent/CN102980678A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4249418A (en) * | 1978-04-20 | 1981-02-10 | Tokyo Shibaura Denki Kabushiki Kaisha | Temperature detector using a surface acoustic wave device |
| DE10046567A1 (en) * | 1999-09-24 | 2001-07-19 | Sentec Elektronik Gmbh | Temperature measurement system for plastics rotational molding plant includes a piezo electric crystal with a metallized structure feeding signals via an antenna to an external unit |
| CN100593700C (en) * | 2008-07-17 | 2010-03-10 | 清华大学 | A kind of SAW pressure sensor and its sensor part manufacturing method |
| FR2971584A1 (en) * | 2011-02-10 | 2012-08-17 | Senseor | Passive temperature sensor, has acoustic wave resonator made of piezoelectric material and provided with metal electrodes made of alloy comprising aluminum and copper or alloy comprising aluminum, copper and element |
| CN102353473A (en) * | 2011-06-23 | 2012-02-15 | 成都赛康信息技术有限责任公司 | Wireless sensor network remote temperature online monitoring system based on surface acoustic wave |
| CN102636204A (en) * | 2012-05-08 | 2012-08-15 | 中国电子科技集团公司第五十五研究所 | Self-numbering surface acoustic wave (SAW) passive and wireless resonance type sensor |
| CN203100928U (en) * | 2012-11-27 | 2013-07-31 | 安徽鑫龙电器股份有限公司 | Wireless passive temperature measuring device |
Non-Patent Citations (4)
| Title |
|---|
| 吴佚卓等: "无线、无源声表面波传感器系统中检波方案的实现", 《天津理工大学学报》, vol. 23, no. 1, 28 February 2007 (2007-02-28), pages 27 - 29 * |
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| 王军峰等: "无源无线声表面波谐振器温度传感系统硬件构成", 《仪器仪表学报》, vol. 25, no. 4, 31 August 2004 (2004-08-31) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004432A (en) * | 2015-05-20 | 2015-10-28 | 邢永安 | Wireless and passive power cable joint temperature monitoring system |
| CN107909762A (en) * | 2017-11-30 | 2018-04-13 | 国网福建省电力有限公司 | 500kV transformer fire protection alarm systems based on wireless and passive temperature sensor |
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Application publication date: 20130320 |