The present invention discloses a control method of conveyer belt sorting machine. The pulse signal of shift signal sensor beside the movement mechanism of conveyer belt and the signal of object-on-belt detector are transmitted to computer controller. After the computer controller receives the object-on-belt signal, the controller counts the pulses from the shift signal sensor. After set pulse number is reached, the sorting mechanism is made to start corresponding sorting under the control of the controller. The present invention has the advantages of stable operation, reliable sorting control, etc. |