公开(公告)号：EP0982564A1

公开(公告)日：2000-03-01

申请号：EP99907945.2

申请日：1999-03-16

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

发明人： INOUE, Makoto ,  NISHIMOTO, Susumu ,  KURIHARA, Norimitsu ,  OHNISHI, Masahide ,  SAITOU, Katsuya

IPC分类号： G01B11/26

CPC分类号： B62D15/021 ,  G01D5/2457 ,  G01D5/34

摘要： The present invention aims at providing a rotation angle detector capable of detecting and storing information for a direction and an angle of rotation of steering wheel while maintaining a condition of reduced power consumption from a battery, when an engine is not running. In achieving the object, the invention discloses a structure, wherein the detector keeps a control means (8) including a memory unit (11) in a memory back-up mode when an ignition switch (7a), i.e. a main switch, is turned off, switches a power supply for sensor elements (3a), (3b) and (4) into a mode of low consumption of current, which is smaller than that of the normal current by a control signal of the control means (8), and allows the control means (8) to activate the sensor elements (3a), (3b) and (4) operative in the normal mode after a confirmation of an output signal from at least one of the sensor elements (3a) and (3b) when the steering wheel is moved, and thereby the detector is capable of detecting the direction and the angle of rotation out of the information for rotation of the steering wheel.

摘要翻译： 本发明旨在提供一种旋转角度检测器，其能够在发动机未运转的同时保持来自电池的电力消耗降低的状况的同时检测和存储方向盘的方向和旋转角度的信息。 在实现该目的中，本发明公开了一种结构，其中当点火开关（7a）（即主开关）转动时，检测器将包括存储器单元（11）的控制装置（8）保持在存储器备用模式 关闭，通过控制装置（8）的控制信号将传感器元件（3a），（3b）和（4）的电源切换成低于正常电流的电流的低消耗电流， 并且在确认来自传感器元件（3a）和（3b）中的至少一个的输出信号之后，允许控制装置（8）激活在正常模式下操作的传感器元件（3a），（3b）和（4） ），因此检测器能够从方向盘旋转的信息中检测方向和旋转角度。