Optical fiber transmission device and method for total station calibration

Abstract

The invention discloses an optical fiber transmission device and method for total station calibration, and belongs to the technical field of photoelectric ranging calibration. The device comprises a case; a temperature control and display system, a multi-mode optical fiber, a self-focusing collimating lens and an optical fiber jumper wire are arranged in the case; the starting end of the multi-mode optical fiber is connected with one end of the self-focusing collimating lens, and the tail end of the multi-mode optical fiber is connected with the optical fiber jumper wire; and the other end ofthe self-focusing collimating lens is connected with a total station. A traditional baseline field method is replaced with a standard optical fiber which is controllable in temperature and is subjected to special processing, so that a portable working mode that the total station calibration is not affected by the external environment is achieved; by changing a length value of the standard opticalfiber, the calibration of variable values of the total station under different measuring ranges are realized; and a standard optical fiber method is used to replace a method for simulating an opticaldistance through return of an optical path between plane mirrors, so that the complicated steps of optical path collimation adjustment are avoided, and the low-cost design of transmission standards isalso achieved.

Description

technical field [0001] The invention belongs to the technical field of photoelectric ranging calibration, and in particular relates to an optical fiber transmission device and method for calibrating a total station. Background technique [0002] At present, the commonly used calibration method of total station is mainly the field baseline field method. Because this method occupies too much space on the one hand, the operation is time-consuming and laborious; on the other hand, it is easily affected by the outdoor weather, the calibration verification efficiency is low, and the work quality cannot be improved. . The total station calibration methods are mainly based on "mirror + beam splitter", based on "spatial optical path target positioning", based on "GPS and automatic tracking measurement" and other schemes. Based on the "mirror + beam splitter" scheme, whether the position of the mirror is offset will directly affect the size of the optical path and the optical path, a...

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Problems solved by technology

[0006] (1) Based on the "mirror + beamsplitter" technology, the collimation adjustment of the mirror and the beamsplitter is relatively complicated, and the optical path of the spatial optical path is not easy to control. At the same time, the operability is poor, and it is not easy to provide external measurement and calibration services.

[0007] (2) Based on the "spatial optical path target positioning" technology, it occupies a large area, and the requirements for the calibration environment are relatively strict, and the construction cost is relatively high

[0008] (3) Based on the "GPS and automatic tracking measurement" technology, the GPS measurement algorithm is relatively complicated, and the grid target processing accuracy is very high. At the same time, its measurement accuracy is not high, which cannot meet the calibration requirements of the total station

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