The working principle of Ningbo Goldshine Electronic Co.ltd portable axle scale is: a car passes through a weighing platform of a certain width at a certain speed, and the weight of each axle of the car is measured by the weighing plaftform, and then the total weight of the car is accumulated.
The weighing process is a strong real-time process, which requires sensors to collect the data of each axle of the car in time and calculate its weight quickly. When a weight is applied to the weighing platform, the weighing platform will output a voltage signal, and the output signal is proportional to the weight of the weight. The signal is sent to the amplifier for amplification and then converted into a digital value by an analog-to-digital converter; the The size of the digital quantity is directly proportional to the size of the signal, and it is also proportional to the weight of the heavy object. Selecting the appropriate scale factor has the following relationship: Car wheel weight = K (scale factor) X digital quantity Among them: K-automatically selected by the computer Digital quantity = the digital quantity corresponding to the calibration value minus the digital quantity corresponding to no-load. Store K and the digital quantity corresponding to no-load in EPROM. After each measurement, take out the above two values for calculation. The result is sent to the display to show that this is the wheel weight value of the car. Add the wheel weight of the car to get the axle load of the car. Add the axle load of the car to get the total weight of the car. Subtract the rated axle load and the rated total weight of the car to get the axle load of the car. Limit and total over-limit.