Development of control system in hand-held weighing instrument

The control system of XK3190 hand-held weighing instrument is introduced.The demodulation of weight signal and conversion of binary system digital signal are accomplished through receiver and decoding circuit.The weighing purpose is accomplished through 89C55 monolithic processor and modularized software.Using with wireless digital signal transmission electro-hanging scale,the system has the properties of steady performance,accurate measurement,anti- interference ,taking expediently and so on.It has reached the third-class standard of OIML interference.