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    • 3. 发明公开
    • AZIMUTH MEASUREMENT DEVICE AND AZIMUTH MEASUREMENT METHOD
    • AZIMUT-MESSEINRICHTUNG UND AZIMUT-MESSVERFAHREN
    • EP1643212A1
    • 2006-04-05
    • EP04746793.1
    • 2004-07-01
    • Asahi Kasei EMD Corporation
    • KITAMURA, Toru;SATO, MasanobuYAMASHITA, MasayaMIKOSHIBA, Norihiko
    • G01C17/28G01C21/08
    • G01C17/28G01C17/38
    • There are provided an azimuth measurement device and its method for realizing an update of an offset calculated from the data acquired by azimuth measurement. A geomagnetism output measured by a 3-axis magnetic sensor (10) is amplified by an amplification section (13) and input to an A/D conversion section (14). A chopper section (11) is arranged for switching the terminals for driving an X-axis magnetic sensor (2), a Y-axis magnetic sensor (3), and a Z-axis magnetic sensor (4) and applies drive voltage output from a drive power source section (12) to the X-axis magnetic sensor (2), the Y-axis magnetic sensor (3), and the Z-axis magnetic sensor (4). The output amplified value amplified by the amplification section (13) is converted from an analog signal to a digital signal by the A/D conversion section (14) and then is input to a sensitivity/offset correction calculation section (16). Output data from this sensitivity/offset correction calculation section (16) is input to an azimuth calculation section (20) and the corresponding azimuth information is output. A reliability information calculation section (19) outputs reliability information.
    • 提供了一种方位测量装置及其方法,用于实现从由方位测量获得的数据计算的偏移的更新。 由3轴磁传感器(10)测量的地磁输出由放大部(13)放大并输入到A / D转换部(14)。 切断部(11),用于切换用于驱动X轴磁传感器(2),Y轴磁传感器(3)和Z轴磁传感器(4)的端子,并施加驱动电压 X轴磁传感器(2),Y轴磁传感器(3)和Z轴磁传感器(4)的驱动电源部分(12)。 由放大部分(13)放大的输出放大值由A / D转换部分(14)从模拟信号转换成数字信号,然后被输入到灵敏度/偏移校正计算部分(16)。 将来自该灵敏度/偏移校正计算部(16)的输出数据输入到方位计算部(20),输出对应的方位信息。 可靠性信息计算部(19)输出可靠性信息。
    • 5. 发明公开
    • ACCELERATION MEASURING DEVICE
    • BESCHLEUNIGUNGSMESSEINRICHTUNG
    • EP1788396A1
    • 2007-05-23
    • EP05780257.1
    • 2005-08-12
    • Asahi Kasei EMD Corporation
    • YAMADA, RikitaHIKIDA, KoichiSASAKI, HiroyukiYAMASHITA, Masaya
    • G01P15/00G01P21/00
    • G01P15/18G01P15/123G01P21/00G01P2015/084
    • The present invention relates to an acceleration measuring device capable of acquiring the offset or both of the sensitivity and the offset necessary for correcting the output of a triaxial acceleration sensor. The invention is provided with an acceleration sensor 1 for detecting the acceleration in a triaxial direction, a data acquisition portion 5A for acquiring the triaxial output data, a data selecting portion 13 for judging whether repeatedly acquired triaxial output data are appropriate to make a selection, a data accumulating portion 14 for accumulating the thus selected triaxial output data, a reference point estimating portion 15 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 17 for correcting the offset of the triaxial output data of the acceleration sensor 1 on the basis of coordinate values of the reference point.
    • 本发明涉及能够获得校正三轴加速度传感器的输出所需的灵敏度和偏移量的偏移或两者的加速度测量装置。 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1,用于获取三轴输出数据的数据获取部分5A,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13, 参考点估计部15,通过参照预定数量的三轴笛卡尔空间中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, 每个轴向分量被赋予坐标值的三维笛卡尔空间,以及基于参考点的坐标值来校正加速度传感器1的三轴输出数据的偏移的偏移校正/计算部17。
    • 7. 发明公开
    • AZIMUTH MEASUREMENT DEVICE
    • AZIMUT-MESSEINRICHTUNG
    • EP1698857A1
    • 2006-09-06
    • EP04807246.6
    • 2004-12-17
    • Asahi Kasei EMD Corporation
    • HIKIDA, KoichiKITAMURA, ToruYAMASHITA, Masaya
    • G01C17/38G01R33/02G01R35/00
    • 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 earth magnetism 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。 在数据处理部分19中,在三维空间中的地磁变化方向上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在三轴输出数据与各轴向分量有关的三维坐标系中三轴输出数据组的距离变化最小的点的坐标,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,或者删除估计参考点的坐标。
    • 8. 发明公开
    • PHYSICAL AMOUNT MEASURING DEVICE AND PHYSICAL AMOUNT MEASURING METHOD
    • Vorrichtung und Verfahren zur Messung physikalischerGrößen
    • EP2157405A1
    • 2010-02-24
    • EP08764634.5
    • 2008-05-23
    • Asahi Kasei EMD Corporation
    • YAMASHITA, MasayaKITAMURA, Toru
    • G01C17/38G01P15/18G01P21/00
    • G01C17/38G01C25/005G01P15/18G01P21/00
    • Even if a measurement data group is not a measurement data group that is obtained in a space where the magnitude of a vector physical quantity to be measured is uniform, an offset with high reliability is estimated. The reliability of the estimated offset is further improved. A vector physical quantity comprised of a plurality of components is repeatedly detected and vector physical quantity data group is obtained, and a difference vector group is calculated from the obtained vector physical quantity data group. A reference point included in the vector physical quantity data group is estimated based on a predetermined evaluation formula using the calculated difference vector group. Whether the calculated difference vector group is suitable for the estimation of the reference point is determined. Only a predetermined difference vector group is output for the estimation of the reference point based on the determination result. Moreover, the degree of reliability of the estimated reference point contains the difference vector group, and only a predetermined reference point is output as an offset based on the determination result.
    • 即使测量数据组不是在要测量的矢量物理量的大小均匀的空间中获得的测量数据组,估计具有高可靠性的偏移。 估计偏移的可靠性进一步提高。 重复检测由多个分量组成的向量物理量,并且获得矢量物理量数据组,并根据所获得的矢量物理量数据组计算差矢量组。 基于使用计算出的差分矢量组的规定的评价公式来估计包含在矢量物理量数据组中的参照点。 确定计算的差分矢量组是否适合于参考点的估计。 基于确定结果,仅输出用于估计参考点的预定差矢量组。 此外,估计参考点的可靠度包含差矢量组,并且仅基于确定结果输出预定参考点作为偏移。
    • 10. 发明公开
    • PHYSICAL QUANTITY MEASURING APPARATUS AND SIGNAL PROCESSING METHOD THEREOF
    • 用于测量一个物理尺寸和SIGNAL其加工
    • EP2060875A1
    • 2009-05-20
    • EP07807150.3
    • 2007-09-12
    • Asahi Kasei EMD Corporation
    • YAMASHITA, MasayaKITAMURA, ToruKITAURA, Munehiro
    • G01D3/028G01P15/18G01R33/02
    • The present invention relates to a physical quantity measuring instrument and signal processing method thereof capable of reducing noise components and improving reliability without increasing size or cost of the circuit. A physical quantity detecting unit (11) has signal detecting components for detecting a plurality of signals based on a desired physical quantity and detects the desired physical quantity. A signal processing unit (12) executes signal processing of the signals detected on the individual detecting axes by the physical quantity detecting unit (11) for linearly combining the signals in different combinations with time. An arithmetic processing unit (13) combines and calculates a plurality of signals based on the physical quantity associated with the physical quantity detecting unit (11) from the signal data output by the signal processing unit (12). It can linearly combine the signals from the plurality of detecting axes in different combinations with time, output them, and obtain desired signal components whose noise components are reduced by calculating the outputs.
    • 本发明涉及一种物理量测量仪器和信号处理方法,其能够减少噪声分量,并在不增加尺寸或电路的成本提高可靠性的物。 一种物理量检测单元(11)具有用于检测期望的基于物理量的信号的多个信号检测部件,并检测所需的物理量。 信号处理单元(12)执行各轴上由所述物理量检测单元(11)用于线性信号以不同的组合随时间组合检测装置检测的信号的信号处理。 算术处理单元(13)结合并计算基于与从所述信号处理单元(12)输出的信号数据的物理量检测单元(11)相关联的物理量的信号的多个。 它可以线性地从检测以不同的组合轴随时间,它们输出的多个集约的信号,并且获得期望的信号分量是谁的噪声分量,通过计算输出降低。