Traceable synchronous measurement ruler-based mixed double-light source laser range finding device and method

Abstract

A traceable synchronous measurement ruler-based mixed double-light source laser range finding device and method belongs to the technology of phase laser range finding. The range finding device comprises a measurement ruler generation unit, a laser frequency shift unit, abeam expanding collimating mirror set, a measurement optical path and a circuit unit. The range finding method comprises a step 1 of starting a frequency reference laser and a double longitudinal mode frequency stabilization He-Ne laser, a step 2 of taking one beam as a reference laser beam, and another beam as a measurement beam, a step 3 of taking a formula defined in the specification as an accurate measurement ruler, a step 4 of taking a formula defined in the specification as a rough measurement ruler, and a step 5 of moving a measurement cube-corner prism to a target end for obtaining phase differences of the accurate measurement ruler and the rough measurement ruler Phi 1 and Phi 2 respectively and obtaining a to-be-tested distance value through a formula. The invention solves a problem that a device and method for achieving large power, synchronism of multiple measurement rulers and traceability is not available in the phase laser range finding technology, and the device and method provided by the invention is characterized by being high in range finding precision and measurement efficiency, and good in stability and real-time performance.

Description

technical field [0001] The invention belongs to phase laser measurement technology, and mainly relates to a phase laser distance measuring device and method. Background technique [0002] Large-scale measurement has attracted much attention in the development of large-scale precision machinery manufacturing, major scientific and technological projects, aerospace industry, shipbuilding industry and microelectronic equipment industry and other large-scale optical-mechanical-electrical integration equipment processing and manufacturing. It is an important basis for the processing and overall assembly of large parts in aerospace vehicles and giant ships. The quality of its measurement methods and equipment performance directly affect the quality of workpieces and assembly accuracy, which in turn affects the operating quality, performance and life of the entire set of equipment. The multi-ruler phase ranging method uses a group of measuring ruler wavelengths from large to small t...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to solve the problem of the lack of a device and method that can take into account the synchronization and traceability of multiple measuring scales in the existing phase laser ranging technology, and to provide a hybrid dual light source based on traceable synchronous measuring scales Laser ranging device and method, to achieve the purpose of increasing the flexibility of ranging, simplifying the steps of ranging, improving measurement efficiency, accuracy, stability, and real-time performance

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