Full field vision self-scanning measurement apparatus

A measuring device and self-scanning technology, which can be used in measuring devices, optical devices, instruments, etc., can solve the problems of inability to measure large-sized objects, poor portability, and low accuracy.

Inactive Publication Date: 2008-12-24
OCEAN UNIV OF CHINA
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  • Abstract
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AI Technical Summary

Problems solved by technology

It overcomes the shortcomings of existing non-contact laser measuring devices that cannot measure large-sized objects, low precision, and poor portability

Method used

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  • Full field vision self-scanning measurement apparatus

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Embodiment Construction

[0054] Such as figure 1 , the measurement device of the present invention comprises a CCD camera 3, a line structured light generator 2 and a galvanometer device 1 located on the base, and the three are all fixed on the stainless steel plate 5 as a reference plane; the line structured light generator 2 is directly opposite to the vibrating mirror device 1, and the light plane of the line-structured light emitted by it completely passes through the rotating shaft of the vibrating mirror in the vibrating mirror device 1, and the line-structured light generator 2 is 30mm away from the rotating shaft; between the rotating shaft and the optical axis of the camera The distance is 300mm; the axis of rotation is perpendicular to the reference plane of the stainless steel plate 5.

[0055] Described vibrating mirror device 1, it is made up of existing vibrating mirror and vibrating mirror driver, and vibrating mirror driver is DA output card, and the output voltage of this DA output ca...

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Abstract

The invention relates to an automatic scanning and measuring device with full-field vision, which comprises a CCD camera that is positioned on a pedestal, a linear-structured light generator and a polarizing mirror device, which are all fixed on a steel plate that is taken as a reference plane; the linear-structured light generator is right opposite to the polarizing mirror device, and a linear-structured light plane that is emitted from the linear-structured light generator completely runs through a rotating shaft of a polarizing mirror of the polarizing mirror device; the rotating shaft of the polarizing mirror is vertical to the steel plate reference plane. The automatic scanning and measuring device with full-field vision adopts a measuring method that comprises the following steps: the device is calibrated by utilizing a target, parameters that are obtained from the calibration, the known current rotating position of the polarizing mirror and image information are substituted into transformation formulas I and II, thus obtaining the three-dimensional world coordinates of a measured point; along with the rotation of the polarizing mirror, a reflecting light plane scans a measured object and forms optical strips when being intersected with the measured object, and the three-dimensional coordinates of the points on the optical strips in the world coordinate system reflect the total three-dimensional information of the measured object. The automatic scanning and measuring device with full-field vision realizes the automatic, high-precision and full-field visual scanning and measuring of large-size objects, and has high measuring precision and convenient carry.

Description

technical field [0001] The invention relates to an instrument for measuring the three-dimensional shape of an object, in particular to a full-field visual self-scanning measuring device, which belongs to the technical field of optomechanical integration. Background technique [0002] Among the current devices and methods for measuring the three-dimensional shape of objects, the non-contact laser measurement method has gradually become the mainstream. In the non-contact measurement method, there are two main methods widely used: the measurement method combining the line structured light sensor and the external driving mechanism such as the three-coordinate measuring machine (three-coordinate machine), and the grating projection measurement method. Among them, the measurement method that combines the line structured light sensor with the external driving mechanism such as the three-coordinate machine uses the external driving mechanism such as the three-coordinate machine to d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/20G01B11/24
Inventor 解则晓刘世晶王琨金明张志伟
Owner OCEAN UNIV OF CHINA
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