Electromagnetic shielding cabin for high-accuracy laser distance measurement equipment

Abstract

The invention discloses an electromagnetic shielding cabin for high-accuracy laser distance measurement equipment. The electromagnetic shielding cabin comprises a shell, wherein the shell is formed bywelding a metal plate, a high-transmitting conductive shielding cover is arranged at an upper part in a front side wall of the shell and is electrically connected with the shell, a rear side wall ofthe shell is detachably connected with the shell, a power filter and a signal filter are arranged at a lower part of a side wall of the shell, ventilation waveguide windows are formed in an upper partand a lower part of the side wall of the shell, and a fixed bolt is arranged at the bottom of the shell and is used for fixing the distance measurement equipment. The electromagnetic shielding cabinhas universality and can be used as a reference for electromagnetic compatibility design or improvement of optical measurement equipment which has high shielding efficiency requirement and is used fordeveloping dynamic high-accuracy measurement; and by combining a metal shielding body and a conductive transmitting shielding material, electromagnetic interference of the measurement equipment in the cabin is shielded, the shielding efficiency larger than 50dB can be achieved, so that the requirement of high-sensitivity detection equipment such as radio astronomy is met.

Description

technical field [0001] The invention belongs to the shielding technical field of high-precision laser ranging equipment, and in particular relates to an electromagnetic shielding cabin for high-precision laser ranging equipment. Background technique [0002] In the field of radio astronomy, it is often necessary to use high-precision laser ranging equipment to accurately and dynamically measure the shape of the reflector of the radio telescope, the position of the feed source, and the deformation of the reflector due to its own weight and wind load. At the same time, since high-precision laser ranging equipment such as total stations is a comprehensive measuring instrument that integrates photoelectric ranging, electronic angle measuring, electronic compensation and computer processing, it will generate broadband electromagnetic radiation. Due to the high sensitivity of the radio astronomical telescope, it is extremely vulnerable to electromagnetic interference. It is necess...

AI Technical Summary

Problems solved by technology

Due to the high sensitivity of the radio astronomical telescope, it is extremely susceptible to electromagnetic interference. It is necessary to protect the laser ranging equipment used. The main purpose is to prevent the electromagnetic interference of the laser ranging equipment from affecting the detection performance and effect of the radio telescope.

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