In highway overload detection systems, a dynamic weighbridge is used to measure vehicle weight while in motion. Vehicles pass through the weighing area without stopping. The system combines multiple load cells with image analysis technology to quickly collect and correct total vehicle weight.
After the vehicle enters the weighing lane, photoelectric sensors on both sides perform initial detection. When the infrared signal is continuously blocked, the system confirms entry into the measurement area, activates the image acquisition device to record the passing process, and initiates dynamic weighing data collection.
During the weighing process, the image acquisition system continuously tracks vehicle motion. By analyzing position changes over time, it calculates speed and acceleration, and determines whether the vehicle is accelerating or decelerating, as this affects load distribution across axles. After all axle loads are collected, the system sums them to obtain a preliminary total weight.
The system then applies dynamic correction using speed and acceleration data from image analysis to improve accuracy. Finally, the corrected total weight is compared with highway limits. If an overload is detected, the system triggers an alert and stores axle load data, speed information, and image records for enforcement and analysis.
As the vehicle continues moving, the axle identification system operates. A ground-based pressure load cell array detects variations in tire forces on the road surface, allowing the system to determine axle count and tire types. When each axle passes over the weighbridge platform, load cells collect weight data, convert signals, and process them into axle loads. This continues until all axles have been measured.
Post time: Apr-13-2026