Passive wireless patch antenna sensor based on RFID technology, and wireless measuring method

A patch antenna and passive wireless technology, applied in antennas, resonant antennas, measuring devices, etc., can solve problems such as background reflection signal interference, and achieve the effects of increased measurement distance, high signal recognition accuracy, and good stability

Inactive Publication Date: 2018-09-28
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the antenna sensor uses electromagnetic scattering technology to realize wireless sensing, which is inevitably interfered by background reflection signals.

Method used

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  • Passive wireless patch antenna sensor based on RFID technology, and wireless measuring method
  • Passive wireless patch antenna sensor based on RFID technology, and wireless measuring method
  • Passive wireless patch antenna sensor based on RFID technology, and wireless measuring method

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] Such as figure 1 As shown, the passive wireless antenna sensor based on RFID technology of the present invention includes an RFID chip and a patch antenna. The patch antenna includes a metal patch 3 and a dielectric substrate 4 . The patch antenna includes a dielectric substrate 4, and one side of the dielectric substrate 4 is fixed on a ground plate 5 (usually when performing an actual measurement, a microstrip patch will be processed on the dielectric substrate, and the dielectric substrate is bonded to the metal under test. At this time, the metal plate under test is used as the ground ...

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Abstract

The invention discloses a passive wireless patch antenna sensor based on an RFID technology, and a wireless measuring method. The passive wireless patch antenna sensor comprises an RFID chip and a patch antenna, the patch antenna comprises a dielectric substrate, one side of the dielectric substrate is fixed on a measured metal plate, the other side of the dielectric substrate is processed to forma metal patch, the metal patch includes a microstrip patch and a T-shaped microstrip line, and the RFID chip is connected between the microstrip patch and the T-shaped microstrip line. The passive wireless patch antenna sensor combines the advantages of the RFID technology and the antenna sensor, eliminates the influences of a background reflection interference signal through a signal modulationfunction, has a simple structure and a high work reliability, can realize passive wireless measurement, meets the basic requirements of a modern structural health monitoring technology for sensor nodes, and has great engineering application values.

Description

technical field [0001] The invention relates to the field of structural health monitoring and antenna technology, in particular to a passive wireless patch antenna sensor based on RFID technology and a wireless measurement method thereof. Background technique [0002] The use of metal structures in modern engineering is extremely large. Large metal structures work in harsh environments all the year round, and bear heavy loads and fatigue loads for a long time, which will inevitably produce various damages and defects. When the damage and defects accumulate to a certain extent, the bearing capacity and fatigue resistance of the metal structure will be reduced, leading to extremely serious consequences. Therefore, it is of great significance to use reliable and practical technical means to monitor the metal structure, detect the damage in the structure in time, and then take corresponding preventive measures to reduce or avoid the occurrence of structural failure accidents. ...

Claims

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Application Information

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IPC IPC(8): G01N27/00G06K7/10G06K17/00H01Q1/22H01Q9/04
CPCG01N27/00G06K7/10217G06K17/0029H01Q1/2208H01Q9/0407
Inventor 刘志平周凯毛艳飞孔璞萍席杰
Owner WUHAN UNIV OF TECH
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