Surveying instrument

Abstract

The invention provides a measuring apparatus. The technical problem to be solved is that: a correct measured value can be obtained even with a simplified centripetal operation without a specific object. In the operating process of the measuring apparatus (10) arranged right above a measuring point (S), the centripetal operation is terminated when an image formed by a CCD camera (38) displays the measuring point (S) on the picture of a display (20). When the measuring point (S) is taken as a real centripetal point to be designated, the coordinate (Xs, Ys) of the measuring point (S) taking a mechanical central point (O) as an origin is worked out to service as the eccentric amount of the measuring point (S) relative to the mechanical central point (O). At that time, if a horizontal angle (theta' h) during aiming at a target (T) with the mechanical center as the reference is obtained through measuring an angle, a horizontal angle correction volume(delta theta h) is worked out based on the coordinate (Xk, Yk)of a simulated centripetal point (K) and the coordinate (Xs, Ys) of the measuring point (S), and the horizontal angle (theta' h) is corrected through the horizontal angle correction volume(delta theta h) to obtain a horizontal angle (theta h) based on the measuring point (S).

Description

technical field [0001] The present invention relates to a surveying instrument, and more particularly to a surveying instrument configured to measure at least one of distance measurement and angle measurement. Background technique [0002] In the prior art, when measuring with a measuring instrument such as a total station or a digital theodolite, before the measurement, the measuring instrument is set near the measuring point so that the main body of the measuring instrument is located at the measuring point (reference point) Afterwards, use a circular bubble tube and a horizontal bubble tube to calibrate the leveling measuring instrument. Then, use a centripetal telescope or a laser centripetal device to observe the measurement point and perform a centripetal operation in line with the centripetal point. Make the mechanical center of the measuring instrument come directly above the measuring point. Performing this centripetal work requires very accurate horizontal alignme...

AI Technical Summary

Problems solved by technology

However, in order to obtain the offset x and y of the centripetal position, it is necessary to set a specific target 2100 at the measurement point. If other targets are used to simplify the centripetal work, there is a danger that accurate measurement cannot be performed.

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