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Imbedded wireless stress/strain/temperature sensor test platform

A temperature sensor, strain sensor technology, applied in the direction of instruments, measuring force, measuring devices, etc., can solve the problem of not being able to be reused, and achieve the effect of low total cost and prolonging the service life

Inactive Publication Date: 2008-12-10
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, this kind of RF module is powered by batteries, and the whole working time generally does not exceed 8 hours.
Once placed in the facility, it cannot be reused

Method used

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  • Imbedded wireless stress/strain/temperature sensor test platform
  • Imbedded wireless stress/strain/temperature sensor test platform
  • Imbedded wireless stress/strain/temperature sensor test platform

Examples

Experimental program
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Embodiment Construction

[0014] see figure 1 , the present invention includes a spherical brittle shell 9 made of ceramic or glass brittle material and a spherical rigid shell 2 arranged in the brittle shell 9, the rigid shell 2 is strong enough to resist the mechanical force transmitted from the ground , and resistant to environmental corrosion, a spherical joint 1 is hinged in the rigid shell 2, a dowel 3 is arranged at the lower end of the spherical joint 1, and a strain gauge 5 is placed at the bottom of the dowel 3, and is consolidated on both On a linear metal strain bar 4, the spherical connection 1, the dowel 3, the strain bar 4 and the strain gauge together form a sensor, and a magnetic field strength of at least 2000 Oersted is arranged on the opposite side of the spherical 1 connection in the rigid shell 2. The permanent magnet 7, and the electronic device 8 is arranged on the permanent magnet 7, and the farad first piezoelectric energy recovery device 6 connected with the electronic device...

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Abstract

An embedded type wireless strain / emergency / temperature sensor testing platform includes a spherical brittle shell and a rigid shell arranged in the brittle shell; a spherical joint is hinged with the rigid shell; the lower end of the spherical joint is provided with a dowel; an emergency instrument is arranged at the bottom part of the dowel and is fixedly connected with two linear metal emergency bars; a permanent magnet is arranged on the opposite side of the spherical joint in the rigid shell; besides, an electric device is arranged on the permanent magnet; a faraday first piezoelectric recycling device is arranged between the electric device and the emergency instrument. The invention adopts completely-inserting and wireless modes and has no requirements on the arrangement of circuits; the detected strain and emergency fields are not affected by wires; a small force-magnetism-piezoelectric energy device with low energy consumption is used, thus being capable of converting the mechanical vibration energy caused by traffic or vibration into the power of a chargeable battery so as to prolong the service life of a system; the MEMS / IT technology and the integration function are adopted which almost needs no maintenance; therefore, the total cost is lower.

Description

technical field [0001] The invention relates to equipment for measuring force, stress, torque, work, mechanical power, mechanical efficiency or fluid pressure, in particular to an embedded wireless stress / strain / temperature sensor test platform for fault diagnosis and safety analysis of major facilities. Background technique [0002] Some experts and scholars at home and abroad use optical fiber technology to measure the stress and strain of some large-scale facilities, such as applying optical fiber technology to performance testing of cable-stayed bridges. Optical fiber technology has a good overall estimation of the equipment, and its sensitivity and signal-to-noise ratio are also high. In particular, it has the advantage of measuring the average stress and average deformation, but it cannot test the relevant dynamic parameters of structural vibration. When applying fiber optic technology to measure the local stress of a facility, it is necessary to tightly integrate the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D21/02G01L1/00
Inventor 吴九汇连昆王小鹏陈天宁陈花玲赵建平
Owner XI AN JIAOTONG UNIV
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