Dynamic weighing and monitoring integrated device for highway bridge

Abstract

The invention relates to a dynamic weighing and monitoring integrated device based on a highway bridge. The device comprises a narrow linewidth laser, two couplers, an acousto-optic modulator, an erbium-doped fiber amplifier, a filter, a circulator, two deceleration strips, a plurality of broadband weak reflection fiber grating sequences, a plurality of cameras, a balance detector, a data acquisition card and an industrial personal computer. The different vibration signals can be generated when different load-carrying vehicles pass through the deceleration strip, the broadband weak reflection fiber bragg grating sequence can well sense the vibration signals and transmit the sensed vibration signals to the detection demodulation device, the detection demodulation device demodulates the vibration frequency of the vibration signals, the weight of the load-carrying vehicle is inversely proportional to the square of the frequency of the vibration signal to obtain the weight of the load-carrying vehicle, and the industrial personal computer is connected to a camera to realize integration of dynamic weighing and monitoring of the highway bridge.

Description

technical field [0001] The invention belongs to the technical field of optical fiber sensing, in particular to an integrated device based on expressway bridge dynamic weighing and monitoring. Background technique [0002] With the continuous development of my country's economy and society, the mileage of my country's high-speed bridge construction is constantly breaking new records every year. The construction of these major livelihood projects has increased the volume of goods transported by customs, cement factories, stone factories, etc., and has also caused pressure. The number of places for weight trading is increasing, so the problem of overloading of transport vehicles and the problem of weight measurement follow. The overweight of transport vehicles will not only damage the roadbed and bridge structure of the highway, but also pose a great threat to people's life and property safety. . A big problem brought about by the rapid development of road traffic safety is how ...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the low traffic rate and long time-consuming problems of traditional high-speed bridge weighing devices, the present invention proposes an integrated device for dynamic weighing and monitoring of expressway bridges with fast measurement speed, accurate measurement, and parallel measurement and monitoring.

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