A kind of calibration method of total station or theodolite centering device

Abstract

The invention embodiment provides a centralizer correction method for a total-station instrument or a transit instrument, which includes the steps of: fixing the upper end of a measuring rope at a top plate stable point on a top plate, dropping the measuring rope naturally, lowering a measurement special plummet at the lower end of the measuring rope to the floor, and marking a floor point; erecting the total-station instrument or the transit instrument right above the floor point by virtue of an instrument bracket, setting the current direction as 0-degree direction, aligning the centralizer to the floor point, and keeping a cross wire or a dot of the centralizer on a same plumb line with the measuring rope; and according to the relative positions of the cross wire or the dot of the centralizer and a reference point, adjusting and correcting a screw. Compared with the prior art, the centralizer correction method accomplishes the centering operation by utilizing the plummet and adjusts the instrument in left, right and other directions through the relative positions of the centralizer and a targeted point, so that the instrument achieves the requirement for centering and leveling. The method fully utilizes the existing structure of the instrument, is easy to carry out, does not increase the complexity, and can meet the instrument correction demand in scenes such as construction scenes and indoor scenes.

Description

technical field [0001] The invention relates to the technical field of engineering surveying, in particular to a method for correcting a total station or a theodolite centering device. Background technique [0002] The total station or theodolite is a precision and high-sensitivity measuring instrument. The correctness of the centering device is a basic parameter to measure the accuracy of a measuring instrument, which directly affects the accuracy of the instrument. This work is the basis of the measurement work. key link. [0003] Due to the high measurement accuracy requirements under construction conditions such as tunnels or roadways, surveyors are required to calibrate and calibrate the instrument centering device frequently. In addition to the three major axis systems (horizontal axis, vertical axis, and collimation axis) of the total station or theodolite, which must meet certain geometric conditions, the instrument with its own optical plummet or laser plummet must...

AI Technical Summary

Problems solved by technology

[0004] In the past, after the deviation of the instrument centering device, it is necessary to go to the measuring instrument repair shop and the instrument manufacturer for repair. This method prevents the measurement workers from affecting the measurement work due to the inaccurate instrument centering device in actual work, but seriously affects the measurement task. The progress and cost are high. The centering and leveling work of the total station or theodolite in the prior art is realized by sliding and stretching the instrument support (such as a tripod, etc.), but the centering and leveling links not only affect the accuracy of the measurement data, but also Affects the efficiency of measurement work. It is not easy for beginners to adjust the sliding and telescopic adjustment of instrument supports (such as tripods, etc.). It takes a long time for the measurement personnel to master this method well, which is not conducive to the efficient advancement of measurement work.

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