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Structural low-frequency vibration wireless patrol star network construction method

A low-frequency vibration, star network technology, used in the testing of machine/structural components, vibration testing, measuring devices, etc., can solve problems such as lack, and achieve the effect of avoiding structural instability

Inactive Publication Date: 2008-09-17
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology

[0003] The present invention is aimed at the problem of the lack of effective low-frequency vibration monitoring methods for structures, and proposes a method for constructing a star network for structural low-frequency vibration wireless inspections, which can pick up low-frequency vibration signals of structures, and can collect vibration signals from multiple measuring points. It is transmitted to the host computer in the monitoring room by wireless transmission for professionals to interpret the data, providing a new test method for the occurrence of early warning accidents

Method used

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  • Structural low-frequency vibration wireless patrol star network construction method
  • Structural low-frequency vibration wireless patrol star network construction method
  • Structural low-frequency vibration wireless patrol star network construction method

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Embodiment Construction

[0022] Such as figure 1 The block diagram of the low-frequency vibration wireless inspection star network of the present invention is shown. In order to prolong the service life of wireless sensor nodes and avoid frequent battery replacement, a solar power supply module 10 is specially designed to supply power for the low-frequency vibration sensor 20, which can be plugged and played The low-frequency vibration wireless sensor 20 used is the basis for constructing the entire wireless star-shaped monitoring network. It has a low-frequency vibration signal (below 5 Hz) pick-up function, and the signal obtained is transmitted with the wireless transmission (using 2.4GHz ISM frequency band) circuit 30, and the signals are collected and received. The circuit 40 receives the signal, and communicates with the host computer 60 in the monitoring room through an additional serial port communication chip 50 .

[0023] Such as figure 2 In the peripheral circuit diagram of the low-freque...

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Abstract

Provided is a construction method for patrol star network of low frequency vibration structure, comprising installing wireless vibration sensor node on vibration-sensitive position in engineering structure, emitting by 2.4GHz ISM band wireless electropult, receiving signal by signal collecting and receiving device, connecting and communicating with host computer in monitoring room by external serial communication device. Vibration signal of a plurality of measuring points is wirelessly transferred to the host computer in monitoring room for data interpretation and monitoring by professional, so as to effectively avoid structural instability induced by low frequency vibration.

Description

technical field [0001] The invention relates to a vibration monitoring method of an engineering structure, in particular to a wireless monitoring method of low-frequency vibration of an engineering structure. Background technique [0002] The low-frequency vibration of structures is often neglected due to the small acceleration value. However, in many engineering fields, such as large-scale rotating machinery, bridges, automobiles, robots, precision instruments, and space stations in microgravity environments, low-frequency vibration (generally below 5 Hz) is an important fault symptom signal that induces structural instability. In the field of vibration monitoring, it is often necessary to perform sequential or random measurements on multiple measuring points, and transmit the measured data to the host computer in the monitoring room for analysis and processing in real time. Contents of the invention [0003] The present invention is aimed at the problem of the lack of e...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02G01H17/00G08C17/02H04L29/08
Inventor 孙玉国
Owner UNIV OF SHANGHAI FOR SCI & TECH
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