Rebar corrosion monitoring sensor based on acoustic surface wave

A technology for monitoring sensors and surface acoustic wave devices, which is applied to the analysis of solids using sound waves/ultrasonic waves/infrasonic waves, material analysis using sound waves/ultrasonic waves/infrasonic waves, and instruments. Low accuracy and other problems, to achieve the effect of enhancing environmental adaptability, high measurement accuracy, and high accuracy

Inactive Publication Date: 2018-05-04
ARMY ENG UNIV OF PLA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of these physical methods directly sense the corrosion of steel bars, which makes the monitoring less accurate and less reliable, a

Method used

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  • Rebar corrosion monitoring sensor based on acoustic surface wave

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Embodiment Construction

[0019] Such as figure 1 As shown, the steel bar corrosion monitoring sensor based on the surface acoustic wave of the present invention includes a surface acoustic wave device 1, a sensing electrode 2 and a reference electrode 3;

[0020] One end of the surface acoustic wave device 1 is electrically connected to the sensing electrode 2, and the other end is electrically connected to the reference electrode 3;

[0021] The sensing electrode 2 is arranged around the steel bar 4 to be tested, and the reference electrode 3 is arranged in the same environment as the steel bar 4 to be tested;

[0022] The sensing electrode 2 is used to sense the impedance change caused by the corrosion of the steel bar 4 to be measured;

[0023] The reference electrode 3 is used to sense the impedance change caused by the same environment as the steel bar 4 to be tested.

[0024] Preferably, the surface acoustic wave device 1 includes a piezoelectric substrate 11, a transducer 12 placed in the middle

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Abstract

The invention discloses a rebar corrosion monitoring sensor based on acoustic surface wave, which comprises a acoustic surface wave device (1), a sensing detecting electrode (2) and a reference electrode (3), one end of the acoustic surface wave device (1) is electrically connected with the sensing detecting electrode (2), the other end is electrically connected with the reference electrode (3); the sensing detecting electrode (2) is arranged around a to-be-detected rebar (4), the reference electrode (3) is arranged on the same environment of the to-be-detected rebar (4); the sensing detectingelectrode (2) is used for sensing and detecting impedance change caused by the corrosion of the to-be-detected rebar (4); the reference electrode (3) is used for sensing and detecting the impedance change caused by the same environment of the to-be-detected rebar (4). The rebar corrosion monitoring sensor based on acoustic surface wave provided by the invention has advantages that the accuracy ishigh, the reliability is good, the structure is simple, the passive work and wireless communication can be realized and is very suitable for performing long-period real-time online monitoring on therebar corrosion in an embedded mixed steel structure.

Description

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Claims

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Application Information

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Owner ARMY ENG UNIV OF PLA
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