Distribution network investigation rod distance measuring instrument

Abstract

The invention provides a distribution network investigation pole distance measuring instrument, and relates to the field of electric pole pit distance measurement. The distribution network investigation pole distance measuring instrument comprises an acquisition and measurement module, a single-chip microcomputer processing module, a data output module and a power module, the acquisition and measurement module is used for measuring the distance of a pole pit, in the invention, the pre-evaluation of excavation conditions is achieved by means of soil detection, blind construction is avoided, the precision of pole pit positioning in a complex environment is improved by integrating GPS satellite signals and cellular positioning signals for analysis, the device applicability in a complex cold environment is achieved by means of a temperature collection and temperature rise control device, and the field exploration design level is effectively improved by achieving accurate measurement under the condition that obstacles exist. The rod distance measuring precision is effectively improved, one-time in-place design is achieved, the engineering construction quality is further improved, and engineering delay caused by construction cost increase caused by design change, material inconformity and the like is reduced.

Description

technical field [0001] The invention belongs to the field of distance measurement of pole pits, in particular to a pole distance measuring instrument for distribution network investigation. Background technique [0002] During the preliminary investigation and initial design work of the distribution network project, there were multiple designs due to the inaccurate positioning distance measurement of the pole pit. Marking, reducing design deviation, and improving the first-time success rate of the initial design. Usually, the method used by the designer on the initial design site is the laser calibration method of the laser rangefinder for fixed-point measurement of the rod distance. The principle is that the instrument emits the laser at the observation point and receives The laser reflected back after touching the measured object can be converted to measure the distance between the two reference objects. Under normal circumstances, the method of using laser ranging can mee...

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Problems solved by technology

[0002] During the preliminary investigation and initial design work of the distribution network project, there were multiple designs due to the inaccurate positioning distance measurement of the pole pit. Marking, reducing design deviation, and improving the first-time success rate of the initial design. Usually, the method used by the designer on the initial design site is the laser calibration method of the laser rangefinder for fixed-point measurement of the rod distance. The principle is that the instrument emits the laser at the observation point and receives The laser reflected back after touching the measured object can be converted to measure the distance between the two reference objects. Under normal circumstances, the method of using laser ranging can meet the needs of accurate measurement. The initial pole distance measurement of the electric pole has a higher accuracy , but in complex field environments such as mountainous areas, where trees are tall and luxuriant, and there are many crops, when laser measurement of pole distance is performed on the original unconstructed site, there are often tall trees, crops, and rural houses on the site because the line corridor passage has not been cleared. Obstacles such as haystacks, rocks, etc. that block the laser path, these obstacles cannot be removed in time because they have not been constructed yet, and the difficulties in laser measurement cannot be solved perfectly. The segment method or the translation avoidance method is used for laser measurement. The segment method is first projected to the middle obstacle, and the next segment is measured after the person reaches the obstacle. The translation avoidance method is to perform a unified translation of the observation point and the measured point after horizontal estimation. Measure after avoiding obstacles, and when a certain section cannot be reached during segmental measurement or the obstacle is too large to be avoided by translation, the existing distribution network survey pole distance measurement process cannot be solved, resulting in deviations during pole pit positioning construction

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