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Device-for-determining-an-orientation-of-at-least-a-portion-of-a-living-body

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Device for determining an orientation of at least a portion of a living body

Details

Inventors: Klapman, Matthew H.; Frerichs, David J.;
Assignee: Klapman; Matthew H. (Morton Grove, IL)
Primary Examiner: Brier; Jeffery
Assistant Examiner:
Attorney, Agent or Firm: Welsh & Katz, Ltd.

A device used for measuring the orientation of a human head about one or two axes and converting that information into an electrical signal in the analog or digital domain includes a headset and includes one or two electromechanical orientation sensors which provide an electrical signal that corresponds to the orientation of the head without any reference to an off-of-the body reference. The orientation sensor includes a signal generating device, such as a variable resistor, coupled to the torso of the user via a mechanical linkage. As the head moves, the linkage moves and changes the resistance of the variable resistor. The change in resistance corresponds to the orientation of the head. One orientation sensor is used to measure the horizontal, or lateral angle, of the head with respect to the torso, or shoulder blades. Two orientation sensors mounted on each side of the head measure both the lateral and vertical angles of the head with respect to the torso, or shoulder blades. Also disclosed is a single sensor having two signal generating devices wherein one signal generating device detects primarily lateral movement while the other signal generating device detects primarily vertical movement.

DETAILED DESCRIPTION What is claimed is: 1.
A device for determining an orientation of at least a portion of a living body comprising: housing means for attachment to a movable portion of the body; and means, operatively connected to said housing means, for sensing the relative movement between said movable portion and another portion of the body, said sensing means having mechanical linkage means and position signal generating means adapted to generate a signal in response to movement of said mechanical linkage means, wherein said mechanical linkage means is adapted to respond to relative movement between said movable portion and said other portion of the body, said mechanical linkage means including a reciprocable member having a portion adapted for attachment to said other portion of the body and connector means adapted to slidably receive said reciprocable member, for moving in response to reciprocal movement of said reciprocable member so as to actuate said position signal generating means in response to movement of said movable portion of the body.
2.
The device of claim 1 wherein said housing means is comprised of a headset adapted to receive a user's head.
3.
The device of claim 2 wherein said headset comprises a visor adapted to house a video display device.
4.
The device of claim 1 wherein said mechanical linkage means is comprised of attachment means for coupling to said other portion of the object.
5.
The device of claim 1 wherein said position signal generating means is comprised of variable impedance means which generates a signal corresponding to a current impedance value which changes in response to movement of said movable portion of the body.
6.
The device of claim 1 wherein said position signal generating means operatively couples to computing means which receives said signal to determine the orientation of said movable portion of the body.
7.
The device of claim 5 wherein said connector means rotatably connects to said variable impedance means and slidably receives said reciprocable member to facilitate reciprocating movement of said reciprocable member during movement of said movable portion of the body

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