Position and orientation (POSE) sensor and related method
First Claim
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1. A sensor for measuring the position and orientation (POSE) of an object relative to the POSE of a base, comprising:
- (a) a target fixed to one of said object and base and including three mutually intersecting planar surfaces;
(b) means, coupled to the other of said object and said base, for directing a pair of light beams onto each of said planar surfaces; and
(c) means, coupled to said other of said object and said base, for detecting the reflection positions of the resultant reflections of each of said light beams, said reflection positions thereby being available to determine the POSE of said object relative to the POSE of said base.
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Abstract
A sensor for measuring the position and orientation (POSE) of an object and related method involving the utilization of a target affixed to an object and including three mutually perpendicular intersecting planar surfaces, a base, a mechanism coupled to that base for directing a pair of light beams onto each of the planar surfaces, and an additional mechanism coupled to the base for detecting the reflection positions of the resultant reflections of each of the light beams, the reflection positions thereby being available to determine the POSE of the target relative to the POSE of the base.
38 Citations
13 Claims
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1. A sensor for measuring the position and orientation (POSE) of an object relative to the POSE of a base, comprising:
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(a) a target fixed to one of said object and base and including three mutually intersecting planar surfaces; (b) means, coupled to the other of said object and said base, for directing a pair of light beams onto each of said planar surfaces; and (c) means, coupled to said other of said object and said base, for detecting the reflection positions of the resultant reflections of each of said light beams, said reflection positions thereby being available to determine the POSE of said object relative to the POSE of said base. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A sensor for measuring the position and orientation (POSE) of an object relative to a base, comprising:
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(a) a target fixed to one of said object and said base and including first, second and third mutually perpendicular planes; (b) light means, coupled to the other of said object and said base, said other of said object and base having a primary coordinate system (XM,YM,ZM), for directing a pair of intersecting light beams onto each of said planar surfaces, said light means including first and second light sources corresponding to each of said first, second and third planes, the position of said light sources being definable by first, second and third coordinate systems which are orthogonal to said primary coordinate system, which each have their Z-axes aligned with said XM, YM and ZM axes of said primary coordinate system, respectively, which each have an origin displaced d0 from the origin of said primary coordinate system, and with said light sources located at points (xE,0,0), (0,yE,0), and with said light sources aligned to intersect the Z axis of said first, second and third coordinate systems at (0,0,zM); (d) detection means, coupled to said other of said object and said base, for detecting the reflection positions (Xr1, Yr1) and (Xr2, Yr2) of the resultant reflections of each of said light beams for each of said three planes, said detector means including a position sensitive detector located in each of the XY planes of said first, second, and third coordinate systems; and (e) means for determining the POSE of said object relative to the POSE of said base as a function of said reflection positions. - View Dependent Claims (8, 9)
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10. A method of measuring the position and orientation (POSE) of an object relative to the POSE of a base, comprising the steps of:
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(a) shining two light beams onto each of three mutually intersecting reflective planes fixed to one of said object and said base; (b) detecting the reflection positions of said light beams; (c) calculating the POSE of said object as a function of said reflective positions. - View Dependent Claims (11, 12, 13)
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Specification