CN202453112U - Intelligent low-voltage cable distributing box utilizing SAW (Surface Acoustic Wave) temperature sensor - Google Patents
Intelligent low-voltage cable distributing box utilizing SAW (Surface Acoustic Wave) temperature sensor Download PDFInfo
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- CN202453112U CN202453112U CN2012200495053U CN201220049505U CN202453112U CN 202453112 U CN202453112 U CN 202453112U CN 2012200495053 U CN2012200495053 U CN 2012200495053U CN 201220049505 U CN201220049505 U CN 201220049505U CN 202453112 U CN202453112 U CN 202453112U
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Abstract
The utility model discloses an intelligent low-voltage cable distributing box utilizing an SAW (Surface Acoustic Wave) temperature sensor. The intelligent low-voltage cable distributing box comprises an SAW temperature acquisition module and a remote temperature receiving module, wherein the SAW temperature acquisition module comprises a cable joint, a temperature sensor, an impedance matching circuit and a transmitting antenna; the temperature sensor is arranged on the cable joint; impedance matching circuit is carried out on the temperature sensor by the impedance matching circuit; and the signal output end of the impedance matching circuit is connected with the transmitting antenna so as to transmit out temperature signals. The intelligent low-voltage cable distributing box disclosed by the utility model has the characteristics of small volume and high measuring accuracy, and is applicable to working under the condition with high voltage and high temperature and under the special environment without power supply.
Description
Technical field
The utility model relates to a kind of low-voltage cable coupling box, relates in particular to a kind of intelligent low-voltage cable coupling box of the SAW of utilization temperature sensor.
Background technology
The low-voltage cable feeder pillar is applicable to the Urban House sub-district, in industrial and mining enterprises, construction three-phase alternating current 80/220V such as factory site, 50Hz, rated current 1600A and the following electric system, as the usefulness of cable branch wiring and control and protection.The cable lug place temperature of traditional low-voltage cable coupling box is higher; Long operational time may break down and damage later; Influence the operate as normal of electrical system; Even cause serious security incident, therefore, the temperature of the cable splice of low-voltage cable feeder pillar is carried out real-time collection be necessary.Yet traditional temperature sensor needs independent power supply, and is not suitable for rugged surroundings such as high pressure, high temperature, needs external special microprocessor to carry out data transmission, and Long-distance Control is complicated, is unfavorable for the intelligent control of low-voltage cable coupling box.
Summary of the invention
In order to overcome the problems referred to above, the utility model provides a kind of intelligent low-voltage cable coupling box of the SAW of utilization temperature sensor.This coupling box adopts the SAW temperature sensor that cable adapter is carried out real-time temperature survey; Be specially adapted to complicated rugged environment, battery powered occasion can not be arranged; And, realize the intellectuality control of low-voltage cable coupling box through the long-range reception coupling box of wireless radio-frequency on-site cable wire terminal temperature.
The technical scheme that adopts is following:
A kind of intelligent low-voltage cable coupling box that utilizes the SAW temperature sensor comprises SAW temperature collect module and remote temperature receiver module.Described SAW temperature collect module is made up of cable splice, temperature sensor, impedance matching circuit, emitting antenna; Described temperature sensor is arranged on the cable splice; Temperature sensor converts temperature value into a radiofrequency signal; Radiofrequency signal is carried out impedance matching through impedance matching circuit, and the signal output part of impedance matching circuit is connected with emitting antenna, and temperature signal is launched.Described remote temperature receiver module is and the receiver module of SAW temperature collect module to usefulness; It comprises receiving antenna, rf chip, microprocessor, host computer display module and alarm module; Receiving antenna receives aerial radiofrequency signal; Through rf chip radiofrequency signal is handled again, converted into corresponding electric signal.Rf chip links to each other with microprocessor, and the signal output part of microprocessor is electrically connected with host computer, display module and alarm module respectively.
The useful benefit of the utility model is:
A kind of intelligent low-voltage cable coupling box that utilizes the SAW temperature sensor.Adopt the SAW temperature sensor to carry out temperature acquisition; The SAW temperature sensor is a kind of sensor power supply that do not have, and has no the sensor of physics on line, is specially adapted to many complicated rugged environments, battery powered occasion can not be arranged; Be different from traditional temperature sensor; This sensor does not need power supply and circuit, has the advantages that volume is little, measuring accuracy is high, works under the particular surroundings that is applicable to high pressure, hot conditions and does not have power supply to supply power.Single port SAW resonance temperature sensor has monosymmetric reflecting grating array, has improved capacity usage ratio, can realize the remote control of remote temperature wireless passive remote.Employing radio transceiver technology, and communicate through microprocessor and host computer, the temperature of detection streamer joint in real time, in case break down, rapid reaction has improved the intelligent level of low-voltage cable coupling box, has very strong practical value.
Description of drawings
Fig. 1 is the system schematic of the utility model.
Embodiment
A kind of intelligent low-voltage cable coupling box that utilizes the SAW temperature sensor comprises SAW temperature collect module 1 and remote temperature receiver module 2.SAW temperature collect module 1 is made up of cable splice 101, temperature sensor 102, impedance matching circuit 103, emitting antenna 104; Described temperature sensor 102 is arranged on the cable splice; Temperature sensor 102 converts temperature value into a radiofrequency signal; Radiofrequency signal is carried out impedance matching through impedance matching circuit, and the signal output part of impedance matching circuit is connected with emitting antenna 104, and temperature signal is launched.Described remote temperature receiver module 2 be with 1 pair of SAW temperature collect module with receiver module; It comprises receiving antenna 201, rf chip 202, microprocessor 203, host computer display module 205 and alarm module 206; Receiving antenna 201 receives aerial radiofrequency signal; Handle through 202 pairs of radiofrequency signals of rf chip again, convert corresponding electric signal into.Rf chip links to each other with microprocessor 203, and the signal output part of microprocessor 203 is electrically connected with host computer, display module 205 and alarm module 206 respectively.After microprocessor is analyzed temperature signal,, the working stability of low-voltage cable coupling box is described, is then carried out normal LCD and show the temperature value of long-range demonstration on-site cable joint through display module 205 if temperature value is normal.If temperature anomaly is in time carried out sound and light alarm through alarm module 206.On the other hand; Microprocessor communicates through RS232 line and host computer 204, and host computer 204 shows the temperature value of on-the-spot low-voltage cable coupling box cable splice in real time, and is unusual if temperature value occurs; Alerting signal can occur on the host computer, go site inspection before the prompting operating personnel.SAW temperature sensor 102 is affixed on cable splice 101.The utility model adopts single port resonance SAW temperature sensor; Compare delaying property sensor and dual-port SAW resonant transducer; Single port SAW resonator only comprises an interdigital transducer, not only makees the input transducer but also do output transducer, and reflecting grating is positioned at the both sides of interdigital transducer; The reflecting grating of both sides constitutes an acoustic resonant cavity, and interdigital transducer carries out the mutual conversion of sound-electricity.Its principle of work is: the input signal in the outside is carried on the input interdigital transducer; Interdigital transducer is a surface acoustic wave with electrical signal conversion; Surface acoustic wave is propagated to both sides along the piezoelectric crystal surface; Through the reflecting grating reflection stack of both sides, again via interdigital transducer output, the structure of this single port SAW resonator is highly suitable for carrying out the passive and wireless detection of temperature.The single port SAW resonator that the utility model adopts; Resonance frequency is 433.92MHz, and this resonator has selecting frequency characteristic, and only the radiofrequency signal in the certain frequency scope of the 433MHz left and right sides just can make the SAW resonator produce resonance; Otherwise signal will be by significantly decay.
The signal of its generation can directly carry out remote transmission through the 433MHz antenna.In order to make SAW temperature sensor 102 and emitting antenna 104 better matching, guarantee that signal can loss, improve the quality and the transfer efficiency of signal transmission, between SAW temperature sensor 102 and emitting antenna 104, increased impedance matching 103 networks.The utility model adopts π type impedance matching network to carry out impedance matching.Emitting antenna 104 adopts undersized dipole antenna, with the high-frequency signal of SAW temperature sensor through this antenna transmission to aerial.
At remote temperature receiver module 2, its receiving antenna 201 receives this signal, and carries out the conversion of signal through RF receiving and transmission module 202.In the utility model, RF receiving and transmission module 202 adopts has multi channel monolithic transceiving chip nRF905.RF receiving and transmission module 202 is connected with microprocessor 203; Microprocessor 203 adopts ATMEG16 type single-chip microcomputer, and when receiving data, microprocessor is changed to high level to " TRX_CE " pin of nRF905; " TX_EN " pin draws to after the low level, begins to receive data.
After microprocessor receives the data of temperature; After temperature signal analyzed; If the temperature value of cable splice is in the temperature range that allows; The working stability of low-voltage cable coupling box is described, is then carried out normal LCD and show the current temperature value of long-range demonstration on-site cable joint through display module 205.If temperature anomaly, the microprocessor pilot relay in time sends the sound and light alarm signal through alarm module 206, reminds operating personnel.On the other hand, microprocessor carries out serial communication through RS232 line and host computer, and host computer can obtain the temperature value of cable splice in real time.Equally, if its temperature value in allowed limits the time, host computer shows temperature value, and stores, for future use.In case the temperature value of cable splice occurs unusual, alerting signal can occur on the host computer, go site inspection before the prompting operating personnel, avoid more serious security incident to take place.
Claims (1)
1. intelligent low-voltage cable coupling box that utilizes the SAW temperature sensor; Comprise SAW temperature collect module (1) and remote temperature receiver module (2); It is characterized in that described SAW temperature collect module (1) is made up of cable splice (101), temperature sensor (102), impedance matching circuit (103), emitting antenna (104); Described temperature sensor (102) is arranged on the cable splice; Temperature sensor (102) converts temperature value into a radiofrequency signal; Radiofrequency signal is carried out impedance matching through impedance matching circuit; The signal output part of impedance matching circuit is connected with emitting antenna (104); Described remote temperature receiver module (2) is and the receiver module of SAW temperature collect module (1) to usefulness, and it comprises receiving antenna (201), rf chip (202), microprocessor (203), host computer display module (205) and alarm module (206), and the radiofrequency signal that described receiving antenna (201) receives converts corresponding electric signal into through rf chip (202); Rf chip (202) links to each other with microprocessor (203), and the signal output part of microprocessor (203) is electrically connected with host computer, display module (205) and alarm module (206) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200495053U CN202453112U (en) | 2012-02-16 | 2012-02-16 | Intelligent low-voltage cable distributing box utilizing SAW (Surface Acoustic Wave) temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200495053U CN202453112U (en) | 2012-02-16 | 2012-02-16 | Intelligent low-voltage cable distributing box utilizing SAW (Surface Acoustic Wave) temperature sensor |
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| Publication Number | Publication Date |
|---|---|
| CN202453112U true CN202453112U (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200495053U Expired - Fee Related CN202453112U (en) | 2012-02-16 | 2012-02-16 | Intelligent low-voltage cable distributing box utilizing SAW (Surface Acoustic Wave) temperature sensor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980679A (en) * | 2012-11-29 | 2013-03-20 | 中国电力科学研究院 | Device and method for measuring interior temperature of GIS equipment by surface acoustic wave sensor |
| CN103267589A (en) * | 2013-05-22 | 2013-08-28 | 国家电网公司 | Wireless passive temperature real-time monitoring system |
| CN103868619A (en) * | 2014-03-03 | 2014-06-18 | 上海交通大学 | Power transmission line-oriented temperature detection sensor system |
| CN105043584A (en) * | 2015-07-10 | 2015-11-11 | 北京中讯四方科技股份有限公司 | Wireless temperature measurement system |
| CN106289569A (en) * | 2016-09-19 | 2017-01-04 | 深圳市惠程电气股份有限公司 | A kind of tube type bus contact temperature monitoring system |
| CN107742395A (en) * | 2017-09-05 | 2018-02-27 | 郭光吉 | A kind of coupling box inner cable warning device |
-
2012
- 2012-02-16 CN CN2012200495053U patent/CN202453112U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980679A (en) * | 2012-11-29 | 2013-03-20 | 中国电力科学研究院 | Device and method for measuring interior temperature of GIS equipment by surface acoustic wave sensor |
| CN103267589A (en) * | 2013-05-22 | 2013-08-28 | 国家电网公司 | Wireless passive temperature real-time monitoring system |
| CN103868619A (en) * | 2014-03-03 | 2014-06-18 | 上海交通大学 | Power transmission line-oriented temperature detection sensor system |
| CN105043584A (en) * | 2015-07-10 | 2015-11-11 | 北京中讯四方科技股份有限公司 | Wireless temperature measurement system |
| CN106289569A (en) * | 2016-09-19 | 2017-01-04 | 深圳市惠程电气股份有限公司 | A kind of tube type bus contact temperature monitoring system |
| CN107742395A (en) * | 2017-09-05 | 2018-02-27 | 郭光吉 | A kind of coupling box inner cable warning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20200216 |
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| CF01 | Termination of patent right due to non-payment of annual fee |