Vehicle dynamic weighing system and monitoring method thereof

Abstract

The invention discloses a vehicle dynamic weighing system and a monitoring method thereof. It includes a light source unit for providing broadband; a dynamic load cell for collecting dynamic signals; the light source unit enters the dynamic load cell through an optical coupler formed by an optical circulator unit and an optical switch; it is used for signal processing of the dynamic load cell A unit; a detector array module and an array grating waveguide module are arranged between the signal processing unit and the optical circulator unit; a temperature control module for controlling the temperature of the grating in the array grating waveguide module. The present invention obtains the weight and speed information of vehicles passing through and the information on the number of axles through the array grating waveguide module, conductive communication optical cable, dynamic weighing sensor, grating signal demodulation module, and signal processing and analysis module; Detection, with high integration, small size, and sensitive detection, can be used for real-time overrun detection of overloaded vehicles in the field of highway and railway transportation.

Description

technical field [0001] The invention belongs to the technical field of vehicle weighing, in particular to a vehicle dynamic weighing system and a monitoring method thereof. Background technique [0002] The vehicle dynamic weighing system is a detection system for measuring the weight of a running vehicle. It dynamically measures the axle load of each axle of the running vehicle, and then calculates the weight of the vehicle by the weighing system. Compared with parking static weighing, it has the advantages of fast speed, high efficiency, and no interference with normal traffic, but its main disadvantage is low accuracy. The weighing process is time-varying and non-linear, so the control of dynamic weighing is more complicated and difficult than the control of static weighing. The dynamic weighing accuracy and the passing speed of the vehicle are the most important performance indicators, which indicate the technical level of the road dynamic weighing system. At present, ...

AI Technical Summary

Problems solved by technology

Due to the price, performance, and service life of the above sensors, the accuracy of the dynamic weighing system is likely to be low. The only shortcoming of the quartz crystal sensitive element is that it cannot perform static measurement for a long time

The biggest disadvantage of this type of sensor is that it is charged by itself, and there are potential safety hazards when used in special environments such as flammable and explosive. Moreover, this type of sensor has short life, low precision, poor stability, and difficult adjustment, and often has false detection and false alarms.

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