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Sensor Modules for Structural Health Monitoring

A sensor module, health detection technology, applied in the direction of instruments, measuring devices, etc., can solve the problems of poor anti-interference ability, lack of sensors, high cost, etc., to achieve the effect of anti-interference, high accuracy and fast calculation speed

Active Publication Date: 2019-04-02
成都尘芯物联科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] In view of the above-mentioned prior art, the purpose of the present invention is to provide a sensor module for structure health detection, which solves the technical problems that the sensors used in the prior art cannot be completely passive, have poor anti-interference ability and high cost.

Method used

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  • Sensor Modules for Structural Health Monitoring
  • Sensor Modules for Structural Health Monitoring
  • Sensor Modules for Structural Health Monitoring

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Such as figure 1 , the parameters of the sensor group, the strain gauge measurement range is 1000–5000με, the strain gauge accuracy is 10με, the temperature measurement range is -40 to +125°C, and the temperature accuracy is ±0.5°C–±0.3°C (each measurement will be at On-chip sampling 250 times to get the average value), the humidity measurement range is 0-100%RH, the humidity accuracy is ±3%RH, the temperature drift is Δε<100μm (-20 to +100℃), no calibration (no need), error The alarm rate is 0% (250 on-chip samples avoid system false alarms), and there is no radio frequency / electromagnetic influence.

[0040] Such as figure 2 As shown, when the radio frequency signal reaches the device, it will also be absorbed by the microstrip antenna of the energy harvesting module. Compared with the dipole antenna (used in the communication and control module), the microstrip antenna has better energy absorption ability, but the corresponding backscatter communication ability is...

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Abstract

A sensor module for structural health detection. The present invention relates to the technical field of structural detection sensors and solves the technical problems of sensors used in the prior art that cannot be completely passive, have poor anti-interference ability and are expensive. The invention mainly includes an energy collection module, used for energy absorption, matching and receiving radio frequency signals; an energy management module, used as a driving power supply, receiving a voltage signal output by the energy collection module; a sensing module, receiving a DC voltage output by the energy management module, and also Receive control signals; sensor group, used to collect stress change information of the structure. The invention is used to design structural health detection sensors for bridges, buildings and other structures.

Description

technical field [0001] The invention relates to the technical field of structure detection sensors, in particular to a sensor module for structure health detection. Background technique [0002] Structural Health Monitoring (SHM) is defined as damage monitoring and characterization of engineering structures. This is a concept that has emerged in the past 20 years. Its main area of ​​focus is the health of infrastructure, including buildings, bridges, tunnels, and the aviation industry. In addition, there are related applications in underwater pipeline systems (oil pipes, optical fibers, etc.), highways, machinery, medical and circuit boards. [0003] In 2007, in the United States, the I-35 highway bridge collapsed due to overload; in 2009, in Germany, the urban historical archives collapsed due to foundation deformation; both cases were infrastructure collapses due to lack of structural health monitoring. The buildings and bridges collapsed due to foundation deformation a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 鲁力李松璠
Owner 成都尘芯物联科技有限公司