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    • 9. 发明申请
    • MOTOR CONTROL CIRCUIT AND MEDICAL DEVICE
    • WO2022188380A1
    • 2022-09-15
    • PCT/CN2021/117219
    • 2021-09-08
    • SIEMENS SHANGHAI MEDICAL EQUIPMENT LTD.
    • GUO, CanWANG, Jun
    • H02P3/08H02P3/10H02P7/03A61B17/00
    • The present disclosure relates to a motor control circuit, including: a switch circuit section, powered by a power supply to drive a motor to output a motion; a switch drive circuit section, capable of sending a drive signal in a valid state to the switch circuit section, to enable the switch circuit section to drive the motor to output the motion; and a limit switch section, including at least one limit switch that is associated with at least one position of the motion outputted by the motor, to enable the motor to generate a feedback signal when the motor outputs the motion to the position in a direction, and the feedback signal is received by the switch drive circuit section, so that the switch drive circuit section cuts off power from the power supply to the switch circuit section, and the motor stops outputting. The motor control circuit provides a mechanism for feeding from the limit switch back to a controller, and when the direction of the motion outputted by the motor is switched, the power from the power supply to the switch circuit section is turned off by using the feedback signal, resolving problems of electromagnetic interference and sparks generated by turning off the power supply of the motor with simplicity and higher security.