Wireless flexible patch antenna sensor array for metal structure crack and strain monitoring

A technology of sensor arrays and patch antennas, which is applied to antenna arrays, antenna arrays, antennas, etc. that are energized separately, can solve the problems that structural cracks and strains cannot be monitored at the same time, and achieve large-scale monitoring, large array element size, The effect of good scalability

Active Publication Date: 2019-10-25
WUHAN UNIV OF TECH
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  • Wireless flexible patch antenna sensor array for metal structure crack and strain monitoring
  • Wireless flexible patch antenna sensor array for metal structure crack and strain monitoring
  • Wireless flexible patch antenna sensor array for metal structure crack and strain monitoring

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[0031] 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.

[0032] Such as figure 1 As shown, the wireless flexible patch antenna sensor array for metal structure crack and strain monitoring of the present invention includes a measuring patch antenna array 100 and a signal transmitting and receiving patch antenna 200, which are connected by transmission feeders 300 of different lengths. Among them, the measurement patch antenna array is used to monitor the crack and strain of the metal structure, and the transmission feeders with different lengths are used to distinguish the signals of each measurement patch antenna. The measurement patch antenna array 100 includes a plurality of crack monitoring array elements 101 and strain monitoring array elements 103 distributed in an array,...

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Abstract

The invention discloses a wireless flexible patch antenna sensor array for metal structure crack and strain monitoring. The wireless flexible patch antenna sensor array comprises a signal transceivingpatch antenna and a measuring patch antenna array. The measuring patch antenna array includes a plurality of crack monitoring array elements and strain monitoring array elements that are distributedin an array; the crack monitoring array elements and strain monitoring array elements are connected with the signal transceiving patch antenna by delay transmission feeders with different lengths; thestrain monitoring array elements are distributed in gaps of the crack monitoring array elements; and matrixes below the strain monitoring array elements have own ground plates. The signal transceiving patch antenna carries out data communication with an external device. Therefore, defects of single monitoring function and small monitoring range of the r traditional patch antenna sensor are overcome; the requirement of simultaneously monitoring the crack and strain of the metal structure can be met; the good conformal effect with the to-be-detected complex surface is realized; the array also can be applied to monitoring of the vertical metal structure; and monitoring needs in various scenes can be met. Besides, the sensor array has the high expansibility.

Description

technical field [0001] The invention relates to the field of metal structure crack and strain monitoring, in particular to a wireless flexible microstrip patch antenna sensor array design for metal structure crack and strain monitoring. Background technique [0002] Compared with other engineering structures, metal structures have the advantages of stable quality, safety and reliability, high strength, light weight and high degree of manufacturing industrialization, and are now widely used in various fields of production and life. It is particularly important to ensure that the metal structure is in a healthy state. Statistics show that 50%-90% of the metal structure damage is due to cracks and strains. In order to ensure the safe operation of the metal structure and prolong its life, it is necessary to monitor the health of the metal structure in order to grasp the safety status of the structure in real time. [0003] After decades of development, structural health monitor...

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Application Information

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IPC IPC(8): G01B15/06G01N22/00H01Q21/06H01Q1/48H01Q1/50
CPCG01B15/06G01N22/00H01Q1/48H01Q1/50H01Q21/065
Inventor 刘志平李润发黄传海余汉锦
Owner WUHAN UNIV OF TECH
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