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Large-field angle three-dimensional measuring instrument

A three-dimensional measurement and field of view technology, which is applied in the field of measurement and can solve the problems that the measurement range and accuracy cannot meet the measurement requirements.

Inactive Publication Date: 2017-09-19
AVIC BEIJING CHANGCHENG AVIATION MEASUREMENT & CONTROL TECH INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the measurement range and accuracy of measuring instruments based on photogrammetry technology are far from meeting the measurement requirements of some applications

Method used

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Embodiment Construction

[0023] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0024] Also, in the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without the specific details or in the particular manner described.

[0025] figure 1 A general structural block diagram...

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Abstract

The present invention belongs to the measurement technical field and relates to a large-field angle three-dimensional measuring instrument. The system comprises a target lighting unit, at least two scanning measurement stations and a spatial intersection measurement unit; the target lighting unit comprises a lighting source which projects emitted light onto a target of a measured target; the at least two scanning measurement stations are arranged in a manner that the at least two scanning measurement stations can perform synchronous scanning to obtain the images of the same target in a measurement field facing the scanning measurement stations and perform processing to obtain the angle information of the target with respect to the measurement stations; and the spatial intersection measurement unit is used for receiving the angle information and solving the angle information to obtain the spatial three-dimensional coordinate values of the target under a system spatial coordinate system. The measurement system can satisfy the requirements of large-space three-dimensional high-precision dynamic measurement and can be applied to the multi-point three-dimensional measurement of large-sized parts in shipbuilding, electric power, construction and transportation field and other fields.

Description

technical field [0001] The invention relates to the technical field of measurement, in particular to a three-dimensional measuring instrument with a large viewing angle. Background technique [0002] The shape and position measurement of parts in the industrial field used to use contact methods, such as three-coordinate measuring machines, special measuring tools, etc. This method is not efficient and is greatly affected by human factors, making it difficult to meet the needs of large-scale measurement. Photogrammetry technology is a non-contact measurement technology with fast measurement speed and less blind spots, and can intuitively reflect the three-dimensional shape of the target and the deviation from the standard data. Therefore, photogrammetry technology is widely used in the field of aerospace. The application of photogrammetry technology in aerospace inspection mainly includes (1) surface inspection of complex parts, especially for the inspection of blank parts m...

Claims

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Application Information

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IPC IPC(8): G01B11/00
CPCG01B11/002
Inventor 张华姜军来甘志超杨超阎炎何溪波
Owner AVIC BEIJING CHANGCHENG AVIATION MEASUREMENT & CONTROL TECH INST
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