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    • 6. 发明申请
    • Azimuth Measuring Device
    • 方位测量装置
    • US20070276625A1
    • 2007-11-29
    • US10583870
    • 2004-12-17
    • Koichi HikidaToru KitamuraMasaya Yamashita
    • Koichi HikidaToru KitamuraMasaya Yamashita
    • G01C21/08
    • G01C17/28G01C17/38
    • An azimuth measuring device which can obtain offset information corresponding to one in the case where the direction of the azimuth measuring device is arbitrarily changed, without obtaining erroneous offset information when changing the direction of the azimuth measuring device while retaining its attitude with respect to a specific direction, is provided. A data processing section 19 processes data from a triaxial sensor which detects earth magnetism. In the data processing section 19, triaxial output data at the time when the direction of the azimuth measuring device changes in a three dimensional space are repeatedly obtained not smaller than a predetermined number of times; the coordinates of a point where the variation of distances from a group of triaxial output data is minimum in a three dimensional coordinate which triaxial output data are related to respective axial components is estimated by using a statistical method, and is set as a reference point; offset information is calculated based on the coordinates of the reference point, and it is determined whether the group of triaxial output data is distributed in the vicinity of a specific plane; and when it has been determined that the group of triaxial output data is distributed in the vicinity of the specific plane, the coordinates of a reference point are not estimated, or the coordinates of an estimated reference point is deleted.
    • 方位测量装置,在方位测量装置的方向任意改变的情况下可以获得对应于偏移信息的方位测量装置,而不改变方位测量装置的方向而在获得错误的偏移信息的同时保持其姿态相对于特定 方向。 数据处理部分19处理检测地磁的三轴传感器的数据。 在数据处理部19中,在三维空间中的方位测量装置的方向变化时的三轴输出数据不少于预定次数被重复获得; 通过使用统计方法来估计三轴输出数据与各轴部分有关的三维坐标中三轴输出数据组的距离变化点最小的点的坐标,并将其设定为参考点; 基于参考点的坐标来计算偏移信息,并且确定三轴输出数据的组是否分布在特定平面附近; 并且当已经确定三轴输出数据组分布在特定平面附近时,不估计参考点的坐标,或者将估计的参考点的坐标删除。
    • 7. 发明申请
    • Acceleration Measuring Device
    • 加速度测量装置
    • US20080033679A1
    • 2008-02-07
    • US11659971
    • 2005-08-12
    • Rikita YamadaKoichi HikidaHiroyuki SasakiMasaya Yamashita
    • Rikita YamadaKoichi HikidaHiroyuki SasakiMasaya Yamashita
    • G06F19/00
    • G01P15/18G01P15/123G01P21/00G01P2015/084
    • The present invention relates to an acceleration measuring device capable of acquiring the offset for correcting the output of a triaxial acceleration sensor. The invention is provided with an acceleration sensor for detecting the acceleration in a triaxial direction, a data acquisition portion for acquiring the triaxial output data, a data selecting portion for judging whether repeatedly acquired triaxial output data are appropriate to make a selection, a data accumulating portion for accumulating the thus selected triaxial output data, a reference point estimating portion estimating coordinate values of the reference point determined in the three-dimensional cartesian space by referring to the distribution of a predetermined number of accumulated triaxial output data in a three-dimensional cartesian space when each axial component is given as a coordinate value, and an offset correction/calculation portion for correcting the offset of the triaxial output data of the acceleration sensor.
    • 本发明涉及能够获取用于校正三轴加速度传感器的输出的偏移的加速度测量装置。 本发明提供了一种用于检测三轴方向的加速度的加速度传感器,用于获取三轴输出数据的数据获取部分,用于判断重复获取的三轴输出数据是否适合进行选择的数据选择部分进行选择,数据累加 用于累积如此选择的三轴输出数据的部分,参考点估计部分通过参考在三维笛卡尔坐标系中预定数量的累积三轴输出数据的分布来估计在三维笛卡尔空间中确定的参考点的坐标值 给定每个轴向分量作为坐标值的空间,以及用于校正加速度传感器的三轴输出数据的偏移的偏移校正/计算部。
    • 8. 发明授权
    • Azimuth measuring device and azimuth measuring method
    • 方位测量装置和方位测量方法
    • US07177779B2
    • 2007-02-13
    • US10519721
    • 2003-06-30
    • Koichi HikidaMasaya Yamashita
    • Koichi HikidaMasaya Yamashita
    • G06F15/00G01S13/08
    • G01C17/28G01C17/38
    • An azimuth measuring device capable of calibrating a magnetic sensor without putting load on a user is provided. When a point having amplified output values Sx, Sy, Sz after a sensitivity correction as x, y, z components is arranged on an xyz coordinate system, an offset information calculation section 8 calculates the center coordinates of such a sphere whose surface is located in the vicinity of each point and calculates an x component of the center coordinates of this sphere as a current offset Cx of an x-axis Hall element HEx, a y component of the center coordinates of this sphere as a current offset Cy of a y-axis Hall element HEy and a z component of the center coordinates of this sphere as a current offset Cz of a z-axis Hall element HEz. It is thereby possible to calibrate the magnetic sensor without putting load on the user.
    • 提供了一种能够校准磁传感器而不对用户施加负载的方位测量装置。 在将灵敏度校正后的输出值Sx,Sy,Sz放大为x,y,z分量的点配置在xyz坐标系上时,偏移信息计算部8计算表面位于 并将该球的中心坐标的x分量计算为x轴霍尔元件HEx的当前偏移量Cx,该球体的中心坐标的分量作为y轴的当前偏移量Cy 该球体的中心坐标的霍尔元素HEy和az分量作为z轴霍尔元素HEz的电流偏移量Cz。 从而可以在不将用户负担的情况下校准磁传感器。
    • 9. 发明申请
    • Azimuth measuring device and azimuth measuring method
    • 方位测量装置和方位测量方法
    • US20050256673A1
    • 2005-11-17
    • US10519721
    • 2003-06-30
    • Koichi HikidaMasaya Yamashita
    • Koichi HikidaMasaya Yamashita
    • G01C17/28G01C17/38G01C9/00
    • G01C17/28G01C17/38
    • An azimuth measuring device capable of calibrating a magnetic sensor without putting load on a user is provided. When a point having amplified output values Sx, Sy, Sz after a sensitivity correction as x, y, z components is arranged on an xyz coordinate system, an offset information calculation section 8 calculates the center coordinates of such a sphere whose surface is located in the vicinity of each point and calculates an x component of the center coordinates of this sphere as a current offset Cx of an x-axis Hall element HEx, a y component of the center coordinates of this sphere as a current offset Cy of a y-axis Hall element HEy and a z component of the center coordinates of this sphere as a current offset Cz of a z-axis Hall element HEz. It is thereby possible to calibrate the magnetic sensor without putting load on the user.
    • 提供了一种能够校准磁传感器而不对用户施加负载的方位测量装置。 在将灵敏度校正后的输出值Sx,Sy,Sz放大为x,y,z分量的点配置在xyz坐标系上时,偏移信息计算部8计算表面位于 并将该球的中心坐标的x分量计算为x轴霍尔元件HEx的当前偏移量Cx,该球体的中心坐标的分量作为y轴的当前偏移量Cy 该球体的中心坐标的霍尔元素HEy和az分量作为z轴霍尔元素HEz的电流偏移量Cz。 从而可以在不将用户负担的情况下校准磁传感器。