A circuit board includes a board body including a wiring; a micro-control unit, arranged on the board body; and an inertial measurement unit arranged on the board body and in communication with the micro-control unit via the wiring to transmit inertial measurement data detected by the inertial measurement unit to the micro-control unit, and where the board body includes a main body part and an isolated part located at a peripheral of the main body part, the micro-control unit is supported on the main body part, and the inertial measurement unit is supported on the isolated part.