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    • 109. 发明授权
    • Electromagnetic position and orientation sensing system
    • 电磁位置和方位感应系统
    • US08723509B2
    • 2014-05-13
    • US13899044
    • 2013-05-21
    • Brown University
    • William R. Patterson, IIIHarvey F. SilvermanKenneth J. Silverman
    • G01B7/14G01B7/30H01F5/00G01D5/20G01B7/00G01R35/00G01V13/00G01V3/08
    • G01D5/204G01B7/003G01B7/004G01B7/14G01D5/2086G01R35/005G01V3/081G01V13/00
    • Magnetic tracking systems and methods for determining the position and orientation of a remote object. A magnetic tracking system includes a stationary transmitter for establishing a reference coordinate system, and at least one receiver. The remote object is attached to, mounted on, or otherwise coupled to the receiver. The transmitter can include a set of three mutually perpendicular coils having a common center point, or a set of three coplanar coils with separate centers. The receiver can include a set of three orthogonal coils. The position and orientation of the receiver and the remote object coupled thereto is determined by measuring the nine mutual inductances between the three transmitter coils and the three receiver coils. The magnetic tracking system provides reduced power consumption, increased efficiency, digital compensation for component variation, automatic self-calibration, automatic synchronization with no connections between transmitter and receiver, and rapid low-cost implementation.
    • 用于确定远程物体的位置和方向的磁跟踪系统和方法。 磁跟踪系统包括用于建立参考坐标系的固定发射器和至少一个接收器。 远程物体附接到,安装在或以其他方式耦合到接收器。 发射机可以包括一组具有公共中心点的三个相互垂直的线圈,或者具有单独中心的一组三个共面线圈。 接收机可以包括一组三个正交线圈。 通过测量三个发射器线圈和三个接收器线圈之间的九个互感来确定接收器和耦合到其的远程对象的位置和方向。 磁跟踪系统提供降低的功耗,提高效率,组件变化的数字补偿,自动自校准,无发送器和接收器之间的连接的自动同步以及快速的低成本实施。