In the process of using the weighing sensor, there are many problems involving the speed sensor, but because the information introduced in this area is very little, users are often helpless when they encounter these problems. The author lists some solutions to the problem according to his own experience and experience in the work, hoping that readers can solve this kind of problems for reference. At present, the speed sensors used in the electronic belt scale mainly include reluctance pulse type and photoelectric pulse type. Analog tachometer generator tachometer sensor is no longer used, replaced by the above two types of output pulse signal digital tachometer sensor.
The excitation voltage of the sensor simulator comes from the bridge voltage of the weighing display instrument, which is a passive signal generator. The sensor simulator can not only set and calibrate the weighing display instrument in the laboratory, but also find and find the fault cause in the field in time, so as to quickly eliminate the fault, it is an essential electronic truck scale detection and maintenance equipment. The simulator is similar to a DC standard voltage source and can provide analog voltage signals in various weighing ranges to the weighing display instrument. Load cell simulator is made according to the working principle of resistance strain gauge load cell. It can simulate various loading states of resistance strain gauge load cell.
The selection of the number of sensors is based on the use of the electronic weighing device and the number of points that the scale body needs to support. In general, the scale body has several support points to choose a few sensors, but for some special scales such as electronic hook scales can only use a sensor, some electromechanical combined scales should be based on the actual situation to determine the number of selected sensors.
