Optical cable breakpoint accurate positioning method based on BIM real scene and satellite positioning technology

Abstract

The invention relates to an optical cable breakpoint accurate positioning method based on a BIM real scene and a satellite positioning technology, and aims to solve the problem that the actual position of an optical cable breakpoint cannot be accurately determined in the prior art. By combining the optical cable breakpoint length position positioning technology and the Beidou positioning technology, the accurate position of an optical cable breakpoint can be quickly positioned, so that the optical cable breakpoint searching becomes simple, and the breakpoint positioning time and difficulty are reduced. The method comprises the following steps of: planning optical cable information acquisition points; acquiring and digitalizing optical cable information; measuring an optical cable breakpoint distance by using an optical time domain reflectometer; selecting a proper measurement length, carrying out breakpoint length measurement from a short distance to a long distance or from a long distance to a short distance, and finally obtaining a breakpoint distance L; calculating the accurate position of a breakpoint by using a segmented interpolation polynomial according to the digital optical cable information and the breakpoint distance L; and according to the latitude and longitude of the breakpoint and an altitude elevation value, displaying the actual position of the breakpoint on a BIM real scene platform.

Description

Technical field: [0001] The invention belongs to the technical field of optical cable maintenance, and relates to a method for accurately locating an optical cable breakpoint based on BIM real scene and satellite positioning technology, which is used for accurately locating the actual position of an optical cable breakpoint during maintenance. Background technique: [0002] With the rapid development of communication technology, optical cable transmission is widely used and transmits this important data. If there is a broken cable, it needs to be repaired quickly. The economic loss and social risk brought by each second are huge. Therefore, the rapid repair of broken cable is proposed. Very demanding. At present, the commonly used method is the optical time domain reflectometer (English name: optical time-domain reflectometer, OTDR), which can calculate the length of the optical cable from the breakpoint of the optical cable to the measuring point. In complex situations, th...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for precise positioning of optical cable breakpoints based on BIM real scene and satellite positioning technology, which overcomes the problem that the actual position of the optical cable breakpoint cannot be accurately determined in the prior art. When pointing, the combination of optical cable breakpoint length position positioning technology and Beidou positioning technology can quickly locate the precise position of the optical cable breakpoint, making it easy to find the optical cable breakpoint, shortening the time and difficulty of breakpoint positioning

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