TRACKING METHOD AND MEASURING SYSTEM COMPRISING A LASER TRACKER
First Claim
1. A tracking method, in which a target point provided with a reflector (12) is tracked by a measurement beam (M) of a laser tracker (10), comprising the steps of:
- in an ordinary tracking mode (A), data for controlling the direction of the measurement beam (M) is derived from the detection of the measurement beam being reflected by the reflector (12), andin an extraordinary tracking mode (B), the data for controlling the direction of the measurement beam (M) is derived from data being registered by an overview apparatus (13),wherein the overview apparatus (13) has a known position and orientation relative to the measurement beam (M), andwherein the extraordinary tracking mode (B) is active when no measurement beam reflected by the reflector (12) is detected.
1 Assignment
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Accused Products
Abstract
A measuring system includes a laser tracker (10), a target point marked by a reflector (12), a surveying apparatus (13), and an arithmetic and control unit (14). The laser tracker emits a measuring beam (M) which is reflected by the reflector, a process that is used for determining the distance between the laser tracker (10) and the reflector (12). The surveying apparatus has a known position and orientation relative to the measuring beam (M) while preferably being embodied as a survey camera. The inventive measuring system is designed so as to track the reflector (12) via the measuring beam (M). In a normal tracking mode (A), a measured value for controlling the orientation of the measuring beam (M) is derived from the detection of the measuring beam reflected by the reflector (12). If the measuring beam is not directed onto the reflector, the system switches to a special tracking mode in which the measured value for controlling the orientation of the measuring beam (M) is derived from an image (20) of the survey camera (13).
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Citations
15 Claims
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1. A tracking method, in which a target point provided with a reflector (12) is tracked by a measurement beam (M) of a laser tracker (10), comprising the steps of:
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in an ordinary tracking mode (A), data for controlling the direction of the measurement beam (M) is derived from the detection of the measurement beam being reflected by the reflector (12), and in an extraordinary tracking mode (B), the data for controlling the direction of the measurement beam (M) is derived from data being registered by an overview apparatus (13), wherein the overview apparatus (13) has a known position and orientation relative to the measurement beam (M), and wherein the extraordinary tracking mode (B) is active when no measurement beam reflected by the reflector (12) is detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A measurement system comprising:
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a laser tracker (10), a target point with a reflector (12) and a computation and control unit (14), in which measurement system a measurement beam (M) emitted by the laser tracker (10) tracks the reflector (12) in an ordinary tracking mode (A), wherein the computation and control unit (14) is designed for controlling the direction of the measurement beam (M) with the aid of detecting the measurement beam being reflected by the reflector (12), wherein the measurement system additionally comprises an overview apparatus (13) which is arranged in a known position and orientation relative the measurement beam (M), and that the computation and control unit (14) is in addition designed for controlling the direction of the measurement beam (M), in an extraordinary tracking mode (B), with the aid of data being generated by the overview apparatus (13), and with the aid of the known position and orientation of the overview apparatus (13). - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification