The explosion-proof dynamic scale system consists of a Weighing system (including the scale platform, scale beam, pull rod limit device, etc.), weighing sensors, junction boxes and hardware control units. To reduce the resistance caused by the horizontal shaking of the scale platform, the pull rod limit method is adopted to ensure that the horizontal displacement of the scale platform does not exceed 2mm, and at the same time, the pull rods remain horizontal and do not generate vertical components. The dynamic scale weighing system and weighing sensors are generally installed in concrete-filled pits, supported by 4 weighing sensors to support the platform. When a vehicle passes dynamically over the platform, the scale platform transmits the vehicle weight to the weighing sensors. By using the vehicle passing over the scale platform, the weighing sensors convert the pressure signal into an analog electrical signal, which is then sent to the analog input end of the A/D converter through an amplifier, and the converted digital quantity is processed as a sampling value for processing. The processing result is used as the dynamic scale weight and sent to the computer through the communication interface for printing or storage for further processing.

The explosion-proof scale uses strain-type weighing sensors. Through the supporting connection elements (i.e., spherical joint pairs, which are the components that ensure adaptive positioning and are part of the sensor and scale platform assembly, the spherical surface of the joint pair connects to the concave area at the bottom of the sensor, while the flat part connects to the aluminum alloy base plate for the sensor part), and installing and fixing them at the bottom end of the high-strength aluminum alloy load-bearing plate, the dynamic scale system overcomes the drawbacks of static scales. When a vehicle enters the detection range on the lane, the anti-skid sensor detects that the vehicle has arrived and notifies the scale sensor to complete the weighing of the vehicle, and transmits the weight data and other information to the weight analysis system based on the embedded platform. The analysis system analyzes and processes the data and transmits the processed data through the network to the display terminal, indicating whether the vehicle is over-limit or overloaded, and completing the final data storage and printing.

The Electronic scale uses the corresponding signal processing method for calculation and processing, calculating and displaying information such as the tire load of the vehicle, axle load, and vehicle speed. It also detects whether the total weight of the vehicle is overloaded and whether the axle load is exceeded in real time. The transient response of the weighing sensor uses the sampled signal sequence after sliding average filtering. The initial peak is the signal when the tire dynamic load is exactly above the sensor. Later, the tire enters the middle area of the scale platform. Small fluctuation signals can be regarded as the influence of vehicle body vibration load. The sliding average filter smoothens the signal, making the peak response of the signal more obvious and calculating the power spectral density of the tire's dynamic load corresponding to the AD digital quantity. The sensor measures the individual tire dynamic load of various vehicles and obtains their dynamic load power spectral density.