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23 条记录 (耗时 0.042 秒)

    Untethered position tracking system
    22.
    发明授权
    Untethered position tracking system 有权
    无阻碍位置跟踪系统

    公开(公告)号：US06720876B1

    公开(公告)日：2004-04-13

    申请号：US10076938

    申请日：2002-02-14

    申请人： David A. Burgess

    发明人： David A. Burgess

    IPC分类号： G08B1314

    CPC分类号： G01S5/186 ,  G01S5/0289 ,  G01S5/30 ,  G01S11/14

    摘要： The invention can enable the position (i.e., location and/or orientation) of one or more untethered objects to be tracked. One or more transmitters, each of which has a fixed and known positional relationship to a corresponding object, each emit a sequence of position tracking signals. Each transmitter can emit a unique, identifiable position tracking signal so that the transmitter (and the object to which the transmitter is coupled) from which a signal was emitted can be identified, thereby enabling the position of multiple objects to be tracked. Multiple receivers receive the position tracking signals emitted by each transmitter. The receivers record the times at which signals are received. These recorded times can be communicated to a controller, which can determine from the recorded times the location of each object at a time that a position tracking signal was emitted from the corresponding transmitter. If multiple transmitters are coupled to each object, the orientation of the object can be determined in addition to the location. The position tracking signals can advantageously be ultrasonic signals, which require relatively little power, thus enabling the transmitters to be embodied in a physically small device, so that correspondingly small objects can be tracked. The invention can be used to track objects in small and medium-scale tracking spaces and can be adapted to track the position of an object or objects in one, two or three dimensions. An inertial device can be added to the object, in addition to the transmitter, to enhance the tracking of the object's location.

    摘要翻译： 本发明可以使得跟踪一个或多个无束缚对象的位置（即，位置和/或取向）。 一个或多个发射器，其每一个具有与对应物体的固定和已知的位置关系，每个发射一个位置跟踪信号序列。 每个发射机可以发射一个独特的，可识别的位置跟踪信号，从而可以识别从其发射信号的发射机（以及与发射机耦合到的对象），从而可以跟踪多个对象的位置。 多个接收器接收每个发射器发射的位置跟踪信号。 接收机记录接收信号的时间。 这些记录的时间可以传送到控制器，控制器可以从记录的时间确定在对应的发射机发出位置跟踪信号的时刻每个物体的位置。 如果多个发射器耦合到每个物体，则可以除了位置之外确定物体的取向。 位置跟踪信号可以有利地是需要相对较小的功率的超声波信号，从而使发射机能够体现在物理上小的装置中，从而可以跟踪对应的小物体。 本发明可以用于跟踪中小规模跟踪空间中的对象，并且可以适应于跟踪一维，二维或三维中物体的位置。 除了发射机之外，还可以向对象添加惯性装置，以增强对物体位置的跟踪。

    Electro-acoustic transducer
    23.
    发明授权
    Electro-acoustic transducer 失效
    电声换能器

    公开(公告)号：US4608463A

    公开(公告)日：1986-08-26

    申请号：US632570

    申请日：1984-07-19

    申请人： David A. Burgess ,  Malcolm R. King

    发明人： David A. Burgess ,  Malcolm R. King

    IPC分类号： H04R9/04 ,  H04R9/06 ,  H04R9/00

    CPC分类号： H04R9/045 ,  H04R9/06

    摘要： An electro-acoustic transducer of the moving coil type, which includes a driven unit including a drive coil, and a magnet unit including a magnet and two pole-piece so located as to define an annular air gap in which the coil is located. The driven unit further includes a substantially circular central portion whose outer periphery is secured to the coil, and an outer portion whose inner periphery is secured to the coil and whose outer periphery is secured to a member of said transducer, which contains said magnet unit at a flat face of the member. The transducer member is substantially cylindrical. A flat cup-like member of larger diameter than the member is secured to the flat face. The driven unit also includes a cone whose inner periphery is secured to the coil and whose outer periphery is secured to the outer rim of the cup-like member.

    摘要翻译： 一种动圈式电声换能器，其包括一驱动单元，该驱动单元包括一驱动线圈，以及一磁体单元，该磁铁单元包括一磁体和两极片，该磁极单元定位成限定一线圈所在的环形气隙。 被驱动单元还包括外周固定到线圈的大致圆形的中心部分，外周部分固定在线圈上，外周固定在所述换能器的构件上，该外部部件包含所述磁体单元 会员的平面。 换能器构件基本上是圆柱形的。 直径大于该构件的扁平杯形构件固定在平面上。 被驱动单元还包括其内周固定到线圈并且其外周固定到杯状构件的外缘的锥体。