We know that when the truck is overweight, the pressure per unit area of the road surface is increased. Overloading will cause severe fatigue and dents on the road surface, and most of the traffic accidents are caused by overloading the vehicle. How to check the weight of the vehicle? This requires the use of a load cell.

Weighing system composition and principle:

1. The weighing system is mainly composed of a load cell, a vehicle separator, a tire identifier, a ground coil and a control cabinet.

Load cell: It mainly completes the weighing, speed detection and shaft type judgment of the axle. Vehicle separator: used to separate the vehicle and provide signals such as start and end. Tire Recognizer: Mainly used to detect the number of tires passing through each axle of the vehicle. Ground-sensing coil: It is mainly used to complete the detection of speed measurement and reversing, and it is used together with the infrared splitter to judge the passage of objects or people other than the vehicle to reduce errors. Control cabinet: processes the information sent by the load cell and the coil, and analyzes and processes the load information of the vehicle.

2. System working principle The vehicle enters the toll lane, and its axle is pressed through the ground coil, load cell, vehicle separator and axle recognizer laid in the road surface. The load cell will detect the axle weight and axis of each axle. Type (single-axis, coupling), the tire identifier will detect the tire type (single and double tire) information, the vehicle separator can accurately determine whether the vehicle is completely passed. When the vehicle is completely gone, the control processor transmits information such as the weighing result, the vehicle model determination result, and the like to the lane toll computer. The lane tolling computer charges the vehicle according to the weighting rate, and displays the vehicle's load information and the amount to be paid on the weight display. It can be seen from the whole working principle that the load cell is the key equipment of the toll collection system. The weighing accuracy and stability of the load cell will directly affect the weighing accuracy of the toll collection system.

The load cell of this kind of application on the highway requires a large range and the accuracy requirement is not particularly high, but the long-term stability must be good. With the development of sensors and other electronic devices, it will become more and more intelligent, thus achieving unmanned control. It can stop the passing of overweight vehicles and can also charge vehicles by weight.

Changzhou Hengto Electronic Weighing Apparatus Co., Ltd. provides you with quality products! Preferential price! Excellent service!

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