Controller of medical electric drill

The invention relates to a controller for a medical electrodrill. Signals detected by a manual switch, a foot controlled switch, a keypad, a current measure circuit of an electric motor and voltage of an electric motor are input into a micro processor; the micro processor processes information according to the input signals and output the information to a display circuit which displays the state of the electric motor; at the same time, the outputs signals, after being isolated by an optoelectronic isolator, reach a control and protection circuit of an electric motor drive to control and protect the electric motor; the output signals of the micro processor adjust the circuit to a switch power source through the voltage of the switch power source; and the switch power source provides power for the control and protection circuit of the electric motor drive. The controller has the beneficial effects that the control of medical electrodrill is intellectualized, the operational status of the electric motor are moni