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公开(公告)号：US5151862A
公开(公告)日：1992-09-29
申请号：US704719
申请日：1991-05-20
CPC分类号： G01C21/28
摘要： A system for measuring a traveling direction of a vehicle includes a geomagnetic sensor and a gyro sensor. The system utilizes first and second indices for deriving the vehicle traveling direction. The first index is indicative of a disturbance of the geomagnetic field on a short distance basis, and the second index is indicative of a disturbance of the geomagnetic field on a long distance basis. The system varies a rate of dependence upon the geomagnetic sensor and the gyro sensor based on values of the first and second indices when calculating the vehicle traveling direction.
摘要翻译： 用于测量车辆的行进方向的系统包括地磁传感器和陀螺仪传感器。 该系统利用第一和第二指标来推导车辆行驶方向。 第一个索引表示在短距离的基础上对地磁场的干扰，第二个索引表示长距离地磁场的干扰。 当计算车辆行进方向时，系统基于第一和第二指数的值来改变对地磁传感器和陀螺仪传感器的依赖率。
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22.发明授权Vehicle driving azimuth detecting apparatus for correcting a disturbed geomagnetic azimuth 失效车辆驾驶三维检测装置，用于校正障碍物的地磁
公开(公告)号：US5067083A
公开(公告)日：1991-11-19
申请号：US316836
申请日：1989-02-28
申请人： Okihiko Nakayama , Hiroshi Tsuda
发明人： Okihiko Nakayama , Hiroshi Tsuda
摘要： In an apparatus for detecting a driving azimuth of a vehicle, a gyroscopic sensor signal and a geomagnetic sensor signal are acquired. When the vehicle is driven in a disturbed geomagnetic area such as a straight road, the acquired geomagnetic sensor signal does not correctly reflect the actual driving azimuth of the vehicle. Moreover, the gyroscopic sensor signal drifts over time. When the vehicle is in such a disturbed geomagnetic area, a variation amount in the acquired geomagnetic sensor signals is subtracted from another variation amount in the acquired gyroscopic sensor signals to obtain a driving azimuth similar to the actual driving azimuth.
摘要翻译： 在用于检测车辆的驾驶方位的装置中，获取陀螺传感器信号和地磁传感器信号。 当车辆被驱动在诸如直道的受扰的地磁区域时，所获取的地磁传感器信号不能正确反映车辆的实际驾驶方位。 此外，陀螺仪传感器信号随时间漂移。 当车辆处于如此干扰的地磁区域时，从所获取的陀螺仪传感器信号中的另一个变化量中减去所获取的地磁传感器信号中的变化量，以获得与实际驾驶方位相似的驾驶方位角。
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