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Passive wireless temperature crack binary sensor array based on microstrip antenna

A sensor array, microstrip antenna technology, applied to thermometers, thermometers, instruments and other directions with physical/chemical changes, can solve problems such as difficult structural safety conditions, eliminate the impact of temperature on crack monitoring, improve work reliability, The effect of low installation and maintenance costs

Active Publication Date: 2020-06-09
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
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Problems solved by technology

However, conventional microstrip patch antenna sensors only focus on structural damage and ignore the shift of sensor resonance frequency caused by temperature changes, which brings difficulties to accurately grasp the safety status of the structure

Method used

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  • Passive wireless temperature crack binary sensor array based on microstrip antenna
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  • Passive wireless temperature crack binary sensor array based on microstrip antenna

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Embodiment Construction

[0026] In order to make the content and technical solutions of the present invention clearer, the principles and specific implementation methods of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] as attached figure 1 As shown, the temperature crack binary sensor array based on the microstrip antenna of the present invention includes a temperature monitoring array element 10, a crack monitoring array element 11, a delay transmission feeder 12, a signal sending and receiving patch antenna 13, a dielectric base layer 20, and a metal grounding plate 30. The temperature signal is acquired remotely by the horn antenna 40 to realize wireless measurement.

[0028] The size of the signal transmitting and receiving patch antenna 13 is different from that of the temperature monitoring array element and the crack monitoring array element, so as to avoid interference during signal transmitting and receiving. The size...

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Abstract

The invention discloses a passive wireless temperature crack binary sensor array based on a microstrip antenna. The passive wireless temperature crack binary sensor array comprises a signal transceiving patch antenna and a measuring patch antenna array. The measuring patch antenna array comprises a crack monitoring array element and a temperature monitoring array element and is connected with thesignal transceiving patch antenna through delay transmission feeder lines with different lengths; and the signal transceiving patch antenna is in data communication with external equipment. The influence of the environment temperature on the monitoring performance of the crack sensor is eliminated, and the working reliability of the microstrip antenna sensor is greatly improved.

Description

technical field [0001] The invention relates to metal structure safety monitoring, in particular to a passive wireless temperature crack binary sensor array based on a microstrip antenna. Background technique [0002] Metal structures, especially steel structures, are widely used in aviation, automobiles, hoisting machinery and other fields. In order to ensure the safe operation of metal structures during service and prolong their service life, structural health monitoring of metal structures is required. Microstrip patch antenna sensors have been widely used in the safety monitoring of metal structures in recent years due to their small size, light weight, simple fabrication, low cost, and their ability to passively and wirelessly monitor the health of structures for a long time. For example, Chinese patent CN201310232310.1 discloses a crack detection sensor based on a microstrip antenna and its detection method, which is characterized in that it includes a dielectric subst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/24G01N27/22G01N25/72G01K11/26
CPCG01K11/26G01N25/72G01N27/221G01N27/24
Inventor 刘志平李润发余汉锦郭谦
Owner WUHAN UNIV OF TECH
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