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    • 3. 发明申请
    • DENTAL POSITION TRACKING SYSTEM FOR A TOOTHBRUSH
    • 用于牙刷的牙科位置跟踪系统
    • US20100323337A1
    • 2010-12-23
    • US12866381
    • 2009-02-19
    • Teunis Jan IkkinkHans Marc Bert Boeve
    • Teunis Jan IkkinkHans Marc Bert Boeve
    • A46B15/00
    • A61C17/221A46B15/0002A46B15/0006A46B15/0038A46B15/004A46B2200/1066A61C17/22
    • The dental position tracking system includes a toothbrush (30) which has a system (20) for determining the orientation of the toothbrush in the mouth of a user relative to the earth, based on measured stored information. Information is stored in the toothbrush concerning target ranges of expected measured toothbrush orientations for each of a plurality of dental zones (22). A processor (24) compares the measured toothbrush orientation information with the target orientation ranges, following conversion of both the target orientation information and the measured toothbrush orientation information to the same coordinate system. The processor then determines which if any of the target ranges matches, within a selected tolerance thereof, with the toothbrush orientation information. Any difference between the target range and the measured toothbrush orientation information is then used to partially adjust the target information range, in order to compensate for a change of position of the user's head.
    • 牙科位置跟踪系统包括牙刷(30),其具有系统(20),用于基于测量的存储信息来确定使用者口中相对于地球的牙刷的取向。 信息存储在牙刷中,用于针对多个牙齿区域(22)中的每一个的预期测量的牙刷取向的目标范围。 在将目标方向信息和所测量的牙刷取向信息两者转换到同一坐标系之后,处理器(24)将所测量的牙刷取向信息与目标取向范围进行比较。 然后,处理器确定在其所选公差内是否有任何目标范围与牙刷取向信息相匹配。 然后使用目标范围和测量的牙刷定位信息之间的任何差异来部分地调整目标信息范围,以便补偿用户头部的位置的改变。
    • 5. 发明授权
    • Magnetic field sensor circuit
    • 磁场传感器电路
    • US07818890B2
    • 2010-10-26
    • US12516173
    • 2007-11-20
    • Haris DuricTeunis Jan IkkinkHans Marc Bert Boeve
    • Haris DuricTeunis Jan IkkinkHans Marc Bert Boeve
    • G01B17/30
    • G01R33/093B82Y25/00G01R33/096
    • A magnetic field sensor circuit comprises a first magneto-resistive sensor (Rx) which senses a first magnetic field component in a first direction to supply a first sense signal (Vx). A first flipping coil (FC1) applies a first flipping magnetic field with a periodically changing polarity to the first magneto-resistive sensor (Rx) to cause the first sense signal (Vx) to have alternating different levels synchronized with the first flipping magnetic field. A second magneto -resistive sensor (Ry) senses a second magnetic field component in a second direction different than the first direction to supply a second sense signal (Vy). A second flipping coil (FC2) applies a second flipping magnetic field with a periodically changing polarity to the second magneto -resistive sensor (Ry) to cause the second sense signal (Vy) to have an alternating different levels synchronized with the second flipping magnetic field. The first flipping magnetic field and the second flipping magnetic field have a phase shift. A differential amplifier (AMP1) receives the first sense signal (Vx) and the second sense signal (Vy) to obtain a difference signal (Vd). A first synchronous demodulator (DEM1) receives the difference signal (Vd) and a first switching signal (Q1) being phase locked to the alternating different levels of the first sense signal (Vx) to supply a first output signal (Vox) indicating the first magnetic field component. A second synchronous demodulator (DEM2) receives the difference signal (Vd) and a second switching signal (Q2) being phase locked to the alternating different levels of the second sense signal (Vy) to supply a second output signal (Voy) indicating the second magnetic field component.
    • 磁场传感器电路包括第一磁阻传感器(Rx),其感测第一方向上的第一磁场分量以提供第一感测信号(Vx)。 第一翻转线圈(FC1)将具有周期性变化的极性的第一翻转磁场施加到第一磁阻传感器(Rx),以使第一感测信号(Vx)具有与第一翻转磁场同步的交替的不同级别。 第二磁阻传感器(Ry)在与第一方向不同的第二方向上感测第二磁场分量以提供第二感测信号(Vy)。 第二翻转线圈(FC2)将具有周期性变化的极性的第二翻转磁场施加到第二磁阻传感器(Ry),以使第二感测信号(Vy)具有与第二翻转磁场同步的交替的不同级别 。 第一翻转磁场和第二翻转磁场具有相移。 差分放大器(AMP1)接收第一感测信号(Vx)和第二感测信号(Vy)以获得差分信号(Vd)。 第一同步解调器(DEM1)接收差分信号(Vd)和第一切换信号(Q1)被锁相到第一感测信号(Vx)的交替不同电平,以提供表示第一感测信号(Vox)的第一输出信号 磁场分量。 第二同步解调器(DEM2)接收差分信号(Vd)和相位锁定到第二感测信号(Vy)的交替不同电平的第二切换信号(Q2),以提供指示第二感测信号(Vy)的第二输出信号(Voy) 磁场分量。
    • 7. 发明申请
    • METHOD AND SYSTEM FOR ORIENTATION SENSING
    • 方位感测方法与系统
    • US20100114517A1
    • 2010-05-06
    • US12594223
    • 2008-03-27
    • Hans Marc Bert BoeveTeunis Jan Ikkink
    • Hans Marc Bert BoeveTeunis Jan Ikkink
    • G01C17/38G01C21/08G06F19/00
    • G01C21/165G01C17/28
    • An orientation sensing system uses an algorithm that iteratively improves an estimate of the body attitude. In each iteration, an error vector is generated that represents the difference between the actually measured sensor signals on the one hand, and a model-based prediction of these sensor signals, given the attitude estimate of the previous iteration, on the other hand. From the compound sensor data error vector, an attitude estimation error (a 3 degrees-of-freedom rotation) is calculated by multiplying the compound error vector by the pseudo-inverse of a sensitivity matrix. An improved attitude estimate is then obtained by applying the inverse of the attitude estimation error to the old attitude estimate.
    • 方向检测系统使用迭代地改善身体姿态估计的算法。 在每次迭代中,产生一个误差矢量,代表了一方面实际测量的传感器信号与另一方面给出了前一次迭代的姿态估计的这些传感器信号的基于模型的预测之间的差异。 从复合传感器数据误差向量,通过将复合误差向量乘以灵敏度矩阵的伪反相来计算姿态估计误差(3自由度旋转)。 然后通过将姿态估计误差的倒数应用于旧的姿态估计值来获得改进的姿态估计。
    • 8. 发明授权
    • Dental position tracking system for a toothbrush
    • 牙刷位置跟踪系统
    • US08690579B2
    • 2014-04-08
    • US12866381
    • 2009-02-19
    • Teunis Jan IkkinkHans Marc Bert Boeve
    • Teunis Jan IkkinkHans Marc Bert Boeve
    • G09B23/28G09B19/00A61C15/00A46B13/00A46B15/00
    • A61C17/221A46B15/0002A46B15/0006A46B15/0038A46B15/004A46B2200/1066A61C17/22
    • The dental position tracking system includes a toothbrush (30) which has a system (20) for determining the orientation of the toothbrush in the mouth of a user relative to the earth, based on measured stored information. Information is stored in the toothbrush concerning target ranges of expected measured toothbrush orientations for each of a plurality of dental zones (22). A processor (24) compares the measured toothbrush orientation information with the target orientation ranges, following conversion of both the target orientation information and the measured toothbrush orientation information to the same coordinate system. The processor then determines which if any of the target ranges matches, within a selected tolerance thereof, with the toothbrush orientation information. Any difference between the target range and the measured toothbrush orientation information is then used to partially adjust the target information range, in order to compensate for a change of position of the user's head.
    • 牙科位置跟踪系统包括牙刷(30),其具有系统(20),用于基于测量的存储信息来确定使用者口中相对于地球的牙刷的取向。 信息存储在牙刷中,用于针对多个牙齿区域(22)中的每一个的预期测量的牙刷取向的目标范围。 在将目标方向信息和所测量的牙刷取向信息两者转换到同一坐标系之后,处理器(24)将所测量的牙刷取向信息与目标取向范围进行比较。 然后,处理器确定在其所选公差内是否有任何目标范围与牙刷取向信息相匹配。 然后使用目标范围和测量的牙刷定位信息之间的任何差异来部分地调整目标信息范围,以便补偿用户头部的位置的改变。
    • 10. 发明申请
    • MAGNETIC FIELD SENSOR CIRCUIT
    • 磁场传感器电路
    • US20100053789A1
    • 2010-03-04
    • US12516173
    • 2007-05-27
    • Haris DuricTeunis Jan IkkinkHans Marc Bert Boeve
    • Haris DuricTeunis Jan IkkinkHans Marc Bert Boeve
    • G11B27/36G01R33/02
    • G01R33/093B82Y25/00G01R33/096
    • A magnetic field sensor circuit comprises a first magneto-resistive sensor (Rx) which senses a first magnetic field component in a first direction to supply a first sense signal (Vx). A first flipping coil (FC1) applies a first flipping magnetic field with a periodically changing polarity to the first magneto-resistive sensor (Rx) to cause the first sense signal (Vx) to have alternating different levels synchronized with the first flipping magnetic field. A second magneto -resistive sensor (Ry) senses a second magnetic field component in a second direction different than the first direction to supply a second sense signal (Vy). A second flipping coil (FC2) applies a second flipping magnetic field with a periodically changing polarity to the second magneto -resistive sensor (Ry) to cause the second sense signal (Vy) to have an alternating different levels synchronized with the second flipping magnetic field. The first flipping magnetic field and the second flipping magnetic field have a phase shift. A differential amplifier (AMP1) receives the first sense signal (Vx) and the second sense signal (Vy) to obtain a difference signal (Vd). A first synchronous demodulator (DEM1) receives the difference signal (Vd) and a first switching signal (Q1) being phase locked to the alternating different levels of the first sense signal (Vx) to supply a first output signal (Vox) indicating the first magnetic field component. A second synchronous demodulator (DEM2) receives the difference signal (Vd) and a second switching signal (Q2) being phase locked to the alternating different levels of the second sense signal (Vy) to supply a second output signal (Voy) indicating the second magnetic field component.
    • 磁场传感器电路包括第一磁阻传感器(Rx),其感测第一方向上的第一磁场分量以提供第一感测信号(Vx)。 第一翻转线圈(FC1)将具有周期性变化的极性的第一翻转磁场施加到第一磁阻传感器(Rx),以使第一感测信号(Vx)具有与第一翻转磁场同步的交替的不同级别。 第二磁阻传感器(Ry)在与第一方向不同的第二方向上感测第二磁场分量以提供第二感测信号(Vy)。 第二翻转线圈(FC2)将具有周期性变化的极性的第二翻转磁场施加到第二磁阻传感器(Ry),以使第二感测信号(Vy)具有与第二翻转磁场同步的交替的不同级别 。 第一翻转磁场和第二翻转磁场具有相移。 差分放大器(AMP1)接收第一感测信号(Vx)和第二感测信号(Vy)以获得差分信号(Vd)。 第一同步解调器(DEM1)接收差分信号(Vd)和第一切换信号(Q1)被锁相到第一感测信号(Vx)的交替不同电平,以提供表示第一感测信号(Vox)的第一输出信号 磁场分量。 第二同步解调器(DEM2)接收差分信号(Vd)和相位锁定到第二感测信号(Vy)的交替不同电平的第二切换信号(Q2),以提供指示第二感测信号(Vy)的第二输出信号(Voy) 磁场分量。