Six-degrees-of-freedom movement sensor having strain gauge mecha

Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device

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73862041, 73862042, 73862043, 73862044, 73862045, 74471XY, 338 2, 338 5, 338 6, 414 2, G05G 9047

Patent

active

057678405

ABSTRACT:
A user-manipulable sensor apparatus is provided for allowing a user to input, through hand manipulation of a movable member, motion in six degrees of freedom: translational motion in the X, Y, and Z axes, and rotation about each of those three axes. The apparatus includes a central member which acts as a stationary reference, and a user-manipulable member, such as a spherical, hollow member which substantially surrounds the central member. Flexible wire or in-line strain gauges are coupled between the central member and the inside surface of the user-manipulable member, to hold the user-manipulable member in a quiescent position, relative to a position of the central member. Accordingly, there is no need for additional support members for holding the user-manipulable member in position. Manipulation of the user-manipulable member causes tension on various ones of the strain gauges. The strain gauges produce signals, from which the motion of the user-manipulable member may be computed.

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