| 摘要 |
A motorized seat belt is provided to prevent accidents and minimize passenger's injury upon accident by independently sensing risk signals through various sensors built in the electronic control unit installed in the vehicle. An ECU(Electronic Control Unit,1) for MSB(Motorized Seat Belt), in which a battery(4) and a motor(8) driving the seat belt are connected to a microcontroller(2) through a power supply unit(3) and a motor driving circuit(7), respectively, and external can signals(6) are delivered to the microcontroller through a can communication part(5) which is a kind of vehicle network technology, comprises a flash memory(9) built in the microcontroller in order to provide a black-box function by storing a seat belt operation start time when the driver starts the vehicle and buckles up(S70,S80), storing a seat belt function stop time(S90), and storing the release time of starting or buckling(S100).
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