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Hybrid laser ranging device and method based on traceable simultaneous multiple measurement tapes

A technology of hybrid lasers and distance measuring devices, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve problems such as lack, achieve the effects of increasing flexibility, overcoming the non-direct traceability of measuring rulers, and improving measurement efficiency and accuracy

Inactive Publication Date: 2016-02-10
HARBIN INST OF TECH
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Problems solved by technology

[0012] The purpose of the present invention is to solve the problem that the existing phase laser ranging technology lacks a laser ranging device and method that can take into account high power, multi-scale synchronization and traceability, and provides a traceable synchronization based Multi-ruler hybrid 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

Method used

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  • Hybrid laser ranging device and method based on traceable simultaneous multiple measurement tapes
  • Hybrid laser ranging device and method based on traceable simultaneous multiple measurement tapes
  • Hybrid laser ranging device and method based on traceable simultaneous multiple measurement tapes

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Embodiment Construction

[0033] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] A hybrid laser ranging device based on traceable and synchronous multi-measurement rulers, including a beam expander collimator lens group 3, characterized in that: the device is composed of a ruler generation unit 1, a laser frequency shift unit 2, and a beam expander collimator lens Group 3 is composed of measuring optical path and circuit unit 4. The laser emitted by measuring ruler generation unit 1 is output to the input end of laser frequency shifting unit 2, and one laser output from laser frequency shifting unit 2 is output to the measurement through beam expanding collimator group 3. One input end of the optical path and circuit unit 4, another laser output from the laser frequency shifting unit 2 is directly input to the other input end of the measurement optical path and circuit unit 4;

[0035] The structure of the measuring ruler ge...

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Abstract

The invention provides a hybrid laser ranging device and method based on traceable simultaneous multiple measurement tapes, belonging to the technology of phase laser ranging. The ranging device comprises a measuring tape generation unit, a laser frequency shift unit, an expanded beam collimation lens group, a measuring light path and a circuit unit. The ranging method comprises the following steps of (1) starting a reference frequency lasers and a semiconductor laser, (2) taking one beam as a reference laser beam, and taking the other beam as measurement laser, (3) taking c / |v2-v3| as a fine measurement tape, (4) taking c / |v1-v2| as a crude measurement tape, (5) moving a measurement retroreflector to a target end, obtaining the phase differences phi 1 and phi2 of the crude measurement tape and the fine measurement tape respectively, and finally obtaining a measured distance value through a formula. According to the device and the method, the problem that a device and a method with the consideration of synchronization and traceability of multiple measurement tapes are lacked in the phase laser ranging technology is solved, and the device and the method have the characteristics of high ranging precision, high measurement efficiency, high stability and high 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...

Claims

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Application Information

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IPC IPC(8): G01B11/02
Inventor 杨宏兴谭久彬胡鹏程
Owner HARBIN INST OF TECH
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