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Sensors 2018, 18(4), 1222; doi:10.3390/s18041222

Development of a 2 MHz Sonar Sensor for Inspection of Bridge Substructures

1
Daum Engineering Co., Ltd., Seongnam-si 13493, Korea
2
Woori Engineering Co., Ltd., Sejong-si 30054, Korea
*
Author to whom correspondence should be addressed.
Received: 12 March 2018 / Revised: 13 April 2018 / Accepted: 13 April 2018 / Published: 16 April 2018
(This article belongs to the Section Physical Sensors)
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Abstract

Hydraulic factors account for a large part of the causes of bridge collapse. Due to the nature of the underwater environment, quick and accurate inspection is required when damage occurs. In this study, we developed a 2 MHz side scan sonar sensor module and effective operation technique by improving the limitations of existing sonar. Through field tests, we analyzed the correlation of factors affecting the resolution of the sonar data such as the angle of survey, the distance from the underwater structure and the water depth. The effect of the distance and the water depth and the structure on the survey angle was 66~82%. We also derived the relationship between these factors as a regression model for effective operating techniques. It is considered that application of the developed 2 MHz side scan sonar and its operation method could contribute to prevention of bridge collapses and disasters by quickly and accurately checking the damage of bridge substructures due to hydraulic factors. View Full-Text
Keywords: 2 MHz sonar; side scan sonar; inspection; underwater structure 2 MHz sonar; side scan sonar; inspection; underwater structure
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Park, C.; Kim, Y.; Lee, H.; Choi, S.; Jung, H. Development of a 2 MHz Sonar Sensor for Inspection of Bridge Substructures. Sensors 2018, 18, 1222.

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