Measuring method of large scale space coordinates based on automatic vision guiding and examining apparatus

Abstract

This invention relates to one large size space coordinate measurement technique and device based on automatic visual guidance, which aims to provide one coordinate measurement and device and adopts the following scheme: altometer fulfills the points to be tested for automatic identification and measurement through variable cameral guidance to realize the large size space coordinate identification and fine measurement by each crossing constraints.

Description

technical field [0001] The invention relates to a precision measuring device, in particular to a large-size space (three-dimensional) coordinate automatic tracking measurement technology and device based on automatic vision guidance. Specifically, the present invention relates to a large-scale spatial coordinate measurement technology and device based on automatic vision guidance. Background technique [0002] The principle and method of large-scale space coordinate measurement is the core technology in the manufacture of large-scale equipment. It is used in large-scale and ultra-large workpiece equipment such as aircraft (spacecraft) fuselage, ship shell, electromechanical energy equipment, railway vehicles, etc., which are related to national economy and national defense security. It has broad application prospects in the field. In the "National Medium- and Long-Term Science and Technology Development Program Outline" recently issued by the state, the extreme manufacturin...

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Problems solved by technology

The machine vision multi-sensor measurement system is composed of multiple groups of vision sensors, which has the advantages of fast measurement speed, non-contact, and can be used in harsh environments. It is not flexible, and its measurement accuracy is affected by the lighting conditions, so it is difficult to control the accuracy; the theodolite measurement system is a large-scale space measurement system (theodolite measurement system) composed of two theodolites, a length standard and a computer online. It has the advantages of large measurement range, non-contact and on-site measurement, high precision, and can realize dynamic measurement and full attitude measurement. However, this system requires manual aiming, cannot automatically identify and track multiple targets, and cannot realize measurement automation. Therefore, it has the advantages of measurement speed Slow, the measurement accuracy is affected by human factors, and does not have high measurement repeatability; single-station and multi-station laser tracking measurement systems are based on laser interferometric distance measurement and angle measurement principles similar to theodolite, and its length measurement has high Accuracy, but its angle measurement accuracy cannot match its length measurement accuracy, and there are problems such as automatic identification, tracking of targets, and disconnection of light.

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