Influencing factors of dynamic weighing system

Based on the weighing principle of the truck scale, the main factors affecting the weighing results are:

1. Sensor

Weighing sensor is a sensitive device that converts pressure into an electrical signal. The measurement accuracy and dynamic responsiveness of the sensor can directly affect the accuracy of the final result. The errors introduced from the sensor include repeatability error, creep, temperature error, etc. Therefore, the sensor must have both high sensitivity and good reusability.

2. Weighing Instruments

Weighing instruments are electronic devices, and their normal operation will be subject to many interferences, such as power supply fluctuations and temperature. The errors caused by electronic instruments include comprehensive effects (nonlinearity, hysteresis, and the influence of temperature on the range), the influence of temperature on the no-load indication, power supply changes, and range stability.

3. The flatness and inclination of the road surface

The flatness and inclination of the road surface affect the force on the weighing sensor, so that the truck does not apply force perpendicular to the scale plane, which in turn affects the weighing result. Generally, when installing, pay attention to choosing a flat foundation to ensure that the sensor and the scale platform are in good contact and each sensor is relatively evenly stressed.

4. Vehicle speed

The standard stipulates that vehicles should pass at a speed between the maximum speed and the minimum speed. The higher the speed, the further the vehicle axle weight signal deviates from the true value. In addition, changes in vehicle speed will cause the vehicle itself to vibrate, adding a lot of interference to the weighing process.

5. Vehicle status

Various abnormal driving conditions in the weighing area, such as terminal pressing, S-bend, stop-and-go, and reversing, will cause a large deviation between the vehicle weight and the actual weight.