Bridge deflection detection system and method based on digital image processing technology

Abstract

The invention provides a bridge deflection detection system and method based on the digital image processing technology. The bridge deflection detection system and method based on the digital image processing technology are used for non-contact measurement of bridge deflection. The bridge deflection detection system based on the digital image processing technology comprises cooperative targets, anoptical filter, an optical lens, a camera, an environmental disturbance monitoring device, an image processing system and a display and control device. According to the bridge deflection detection system based on the digital image processing technology, the cooperative targets are adopted to be fixed to the position where the deflection of a bridge needs to be tested; images of a highlighted LEDon the cooperative targets are captured through the optical lens and the camera; the images of the targets are processed by using an image processing system; the deflection of the bridge is calculatedbased on the information provided by the environmental disturbance monitoring device; and the display and control device is used for guiding the measurement operation and displaying deflection data.The digital image processing technology is adopted in the bridge deflection detection system based on the digital image processing technology, and the bridge deflection detection system based on the digital image processing technology has the characteristics of non-contact measurement, simple operation, wide field adaptation range, high measurement precision, strong environmental interference resistance, multi-point simultaneous measurement and the like.

Description

technical field [0001] The invention relates to the field of bridge deflection detection, in particular, the invention relates to a non-contact bridge deflection detection system utilizing digital image processing technology. Background technique [0002] As an important indicator of bridge safety status, deflection needs to be accurately measured during the construction, acceptance and use stages of bridges. With the continuous advancement of measurement technology, various methods have been applied to the bridge deflection test technology. At present, the measurement methods that have been applied to practical applications include dial indicator method, level meter method, connecting pipe method, inclinometer method, laser Image method, GPS method, etc. The above measurement methods can be classified into two types: one is the contact deflection measurement method, and the other is the non-contact measurement method. Among them, the dial indicator method, the level gauge...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the research is based on the development of computer platforms, which are limited by the operation mode and power supply conditions in the measurement field application. Whether it is a desktop computer or a notebook, it brings a lot of inconvenience to the operation. At present, there are few professional instruments based on photoelectric imaging technology. Bridge deflection measurement, most studies are limited to theoretical and functional testing stages

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