Inertial dimension metrology
First Claim
1. A portable metroprobe usable in performing dimensional metrology of an object using a plurality of survey points on the object, comprising:
- an Inertial Measurement Unit (IMU) operable to determine an attitude measurement of said IMU and define a coordinate system in said IMU having an origin based on said attitude measurement of said IMU;
an elongate probe attached to said IMU;
a probe tip attached to said probe having a first offset length from said origin of said coordinate system in said IMU; and
said metroprobe being operable to correlate a position of said probe tip based on said attitude measurement of said IMU and being transportable to the plurality of survey points on the object for measuring corresponding coordinates thereof based on said measured attitude of said IMU.
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Accused Products
Abstract
A method of performing dimensional metrology of an object (12) includes incorporating an Inertial Measurement Unit (IMU-18) with an elongate probe (20) in a portable metroprobe (10). A tip (22) of the probe (20) has an offset length (L) from an origin (26) of a coordinate system in the IMU (18) and position (X,Y,Z) thereof is correlated based on attitude (A,B,C) measurement of the IMU (18). The metroprobe (10) is transported in sequence to a complement of survey points (Pn) on the object (12) for measuring corresponding coordinates (X,Y,Z) thereof based on measured attitude (A,B,C) of the IMU (18).
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Citations
22 Claims
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1. A portable metroprobe usable in performing dimensional metrology of an object using a plurality of survey points on the object, comprising:
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an Inertial Measurement Unit (IMU) operable to determine an attitude measurement of said IMU and define a coordinate system in said IMU having an origin based on said attitude measurement of said IMU; an elongate probe attached to said IMU; a probe tip attached to said probe having a first offset length from said origin of said coordinate system in said IMU; and said metroprobe being operable to correlate a position of said probe tip based on said attitude measurement of said IMU and being transportable to the plurality of survey points on the object for measuring corresponding coordinates thereof based on said measured attitude of said IMU. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for performing dimensional metrology of an object, comprising:
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a portable metroprobe usable in performing dimensional metrology of an object using a plurality of survey points on the object, comprising; an Inertial Measurement Unit (IMU) operable to determine an attitude measurement of said IMU and define a coordinate system in said IMU having an origin based on said attitude measurement of said IMU; an elongate probe attached to said IMU; a probe tip attached to said probe having a first offset length from said origin of said coordinate system in said IMU; said metroprobe being operable to correlate a position of said probe tip based on said attitude measurement of said IMU and being transportable to the plurality of survey points on the object for measuring corresponding coordinates thereof based on said measured attitude of said IMU; said IMU being operable, when the metaprobe is transported in a sequential survey of the plurality of survey points on the object, to; measure linear positions of said IMU at each of the plurality of survey points on the object; measure said attitude of said IMU and correlate therewith an attitude of said probe tip at each of the plurality of survey points on the object; and establish corresponding linear coordinates of said probe tip in contact with each of the plurality of survey points on the object correlated to said measured linear positions of said IMU at each of the plurality of survey points on the object; and an independent coordinate measurement machine (CMM) having line-of-sight with said metroprobe and being operable to measure a linear positions of said IMU; and said IMU establishing said linear coordinates of said probe tip at each of the plurality of survey points on the object by correlating such to said linear positions of said IMU measured by said CMM. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A system for performing dimensional metrology of an object comprising:
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a portable metroprobe comprising an inertial measurement unit integrated with both an elongate probe; a controller operatively joined to said IMU for controlling operation thereof; said controller being configured to correlate a position and an attitude of said probe to a reference coordinate system in said IMU; and said metroprobe being configured for establishing coordinates of said probe at a plurality of survey locations on the object based on said attitude of said IMU as measured by said IMU.
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Specification