Truck scales use a combination of hardware and software to measure the weight of massive vehicles. Here's a detailed breakdown of how they work:

The Working Process

l Truck Positioning: The truck driver carefully positions the vehicle entirely on the weighbridge, ensuring all axles are within the designated area.

l Weight Distribution: As the truck's weight presses down on the weighbridge, the load cells experience compression.

l Electrical Signal Conversion: The compression in each load cell translates into a corresponding electrical signal proportional to the weight applied.

l Signal Processing: The junction box combines the individual signals from all the load cells into a single, unified signal.

l Weight Calculation: A computer or controller unit processes the combined signal and converts it into a weight reading based on calibration data. This weight represents the total weight of the truck.

l Display and Recording: The weight reading is displayed on the weight indicator for the driver and scale operator to see. It can also be electronically recorded for documentation purposes.

Types of Truck Scales

l Static Scales: These are the most common type. The truck needs to come to a complete stop on the weighbridge for accurate measurement.

l Weigh-in-Motion (WIM) Scales: These allow trucks to drive over the scale at a slow speed. Sensors embedded in the road surface capture the weight of each axle as it passes. WIM scales are faster but may have slightly lower accuracy compared to static scales.

Additional Considerations

l Calibration: Regular calibration with certified weights is crucial to ensure the accuracy of the weight readings.

l Software Features: Modern truck scales often come with software that allows for features like axle weight analysis, data printing, and integration with other systems.