公开(公告)号：US20050077717A1

公开(公告)日：2005-04-14

申请号：US11003663

申请日：2004-12-03

申请人： Yukinori Midorikawa

发明人： Yukinori Midorikawa

IPC分类号： B60R21/01 ,  B60R21/015 ,  B60R22/44 ,  B60R22/46 ,  G01R31/00 ,  G01R31/34 ,  G05D1/00

CPC分类号： B60R22/46 ,  B60R21/01546 ,  B60R21/01548 ,  B60R22/44 ,  B60R2022/4473 ,  B60R2022/4666 ,  G01R31/006 ,  G01R31/343

摘要： An automotive passenger restraint and protection apparatus for an automotive vehicle has a seatbelt and operates to restrain an occupant of the automotive vehicle by the seatbelt to protect the occupant. An electric retractor has a DC motor for retracting and protracting the seatbelt. An MPU applies voltage having a predetermined waveform to the DC motor, and then detects a waveform of current flowing to the DC motor. The MPU carries out fault diagnosis of the DC motor, based upon the detected waveform of current when the voltage having the predetermined waveform is applied to the DC motor. Thus, accurate fault diagnosis of the apparatus can be achieved.

公开(公告)号：US06843339B2

公开(公告)日：2005-01-18

申请号：US10385811

申请日：2003-03-11

申请人： Yukinori Midorikawa ,  Osamu Kawai

发明人： Yukinori Midorikawa ,  Osamu Kawai

IPC分类号： B60R21/01 ,  B60R21/015 ,  B60R22/44 ,  B60R22/46 ,  G01R31/00 ,  G01R31/34 ,  B60R22/00

CPC分类号： B60R22/46 ,  B60R21/01546 ,  B60R21/01548 ,  B60R22/44 ,  B60R2022/4473 ,  B60R2022/4666 ,  G01R31/006 ,  G01R31/343

摘要： An automotive passenger restraint and protection apparatus for an automotive vehicle has a seatbelt and operates to restrain an occupant of the automotive vehicle by the seatbelt to protect the occupant. An electric retractor has a DC motor for retracting and protracting the seatbelt. An MPU applies voltage having a predetermined waveform to the DC motor, and then detects a waveform of current flowing to the DC motor. The MPU carries out fault diagnosis of the DC motor, based upon the detected waveform of current when the voltage having the predetermined waveform is applied to the DC motor. Thus, accurate fault diagnosis of the apparatus can be achieved.

摘要翻译： 用于机动车辆的汽车乘客约束和保护装置具有安全带并且操作以通过安全带限制机动车辆乘员以保护乘客。 电牵引器具有用于收回和伸展安全带的直流电动机。 MPU向DC电机施加具有预定波形的电压，然后检测流向DC电动机的电流的波形。 当具有预定波形的电压被施加到直流电动机时，MPU根据检测到的电流波形执行直流电动机的故障诊断。 因此，可以实现装置的精确故障诊断。