Vehicle dynamic weighing sensor

Abstract

The invention discloses a vehicle dynamic weighing sensor. The vehicle dynamic weighing sensor comprises an optical fiber microbend-elastic oil pipe sensor, an optical fiber raster-hydraulic sensor, first transmission optical fiber, second transmission optical fiber, third transmission optical fiber, fourth transmission optical fiber, a light intensity demodulation module, an optical wavelength demodulation module and a restrictor valve, wherein laser emitted by the light intensity demodulation module is introduced from the first transmission optical fiber to the optical fiber microbend-elastic oil pipe sensor and then is led out by the second transmission optical fiber to the light intensity demodulation module; laser emitted by the optical wavelength demodulation module is introduced from the third transmission optical fiber to the optical fiber raster-hydraulic sensor and then is led out by the fourth transmission optical fiber to the optical wavelength demodulation module; at least one overflow hole is formed in the restrictor valve; and the optical fiber microbend-elastic oil pipe sensor is communicated with the optical fiber raster-hydraulic sensor through the restrictor valve. The vehicle dynamic weighing sensor has high anti-electromagnetic interference capacity, measurement accuracy and high durability, is convenient to carry and realizes remote monitoring easily.

Description

technical field [0001] The invention relates to a vehicle dynamic weighing sensor, which is mainly used for collecting dynamic information of vehicles running on roads. Background technique [0002] With the development of the national economy and road traffic, my country's road traffic network is increasingly developed, and the number of road bridges is also increasing. With the passage of time, due to environmental changes, aging of bridges and other reasons, the durability and reliability of bridge structures have gradually declined. Therefore, it is necessary and meaningful to monitor the health of bridge structures throughout their lifespan. Among them, the vehicle load is one of the most important loads of the bridge structure, and the validity and accuracy of vehicle information collection play a very important role in judging the reliability and remaining life of the bridge structure. Not only that, accurate grasp of vehicle weight information on arterial roads is ...

AI Technical Summary

Problems solved by technology

However, traditional dynamic load cells are based on the measurement of electrical quantities for weighing. This type of sensor has poor anti-electromagnetic interference and low repeatability, and the transmission of vehicle weight often depends on the mechanical structure. Its sensitivity and effectiveness are often due to Inhomogeneity of internal force and changes in material properties produce large errors

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