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Moving object space coordinate information detection method

A technology of spatial coordinates and detection methods, applied in the field of signal detection, can solve the problems such as difficulty in balancing the accuracy of target positioning of the size of the stereo vision field of view, interference with the visual positioning of the camera, and low sampling frequency of the system, so as to improve the accuracy and real-time performance, and improve the sampling rate. The effect of fast frequency and avoiding detection error

Inactive Publication Date: 2015-06-17
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0002] When the object is moving in three directions in space, it is necessary to detect the three-dimensional coordinate information of the feature points of the measured object in space in real time. If the camera visual positioning is used, at least two cameras are required to form a stereo vision detection system. , but it is difficult to balance the field of view of stereo vision and its target positioning accuracy, and the controller needs to process a large amount of image data, which leads to low sampling frequency of the system, which is not conducive to real-time detection. At the same time, if the surface of the measured object is arc surface, the arc surface will interfere with the visual positioning of the camera, resulting in a large error

Method used

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Embodiment

[0027] combine figure 1 and figure 2 :

[0028] A method for detecting spatial coordinate information of a moving object, comprising the following steps:

[0029] Step 1: The surface of the measured object 1 is a plane or arc surface, the feature point 2 to be detected is located on the surface of the measured object 1, and two raised marks are set on the surface of the measured object 1, one of which is vertical The vertical direction is a vertical raised mark 3, and the other raised mark is in a horizontal direction and is a horizontal raised mark 4. The two raised marks are perpendicular to each other, and the extension line of the vertical raised mark 3 passes through the feature point 2;

[0030] Step 2: Set two 2D laser displacement sensors 5 at the positions corresponding to the two raised marks, and the positions of the two 2D laser displacement sensors 5 are fixed. In the initial state, the laser fans 6 of the two 2D laser displacement sensors 5 are perpendicular t...

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Abstract

The invention discloses a moving object space coordinate information detection method including the steps of arranging an embossing mark, arranging a 2D laser displacement sensor, positioning the 2D laser displacement sensor, collecting data by the 2D laser displacement sensor, determining the moving displacement and the like: the method can detect three-dimensional space coordinate information of a feature point on a moving plane or cambered-surface object, is high in detection precision, fast in sampling frequency and less in information calculation quantity, especially can avoid detection errors caused by a circular cambered surface during detection of the cambered-surface object, and is conducive to improve the detection accuracy and real-time performance.

Description

technical field [0001] The invention belongs to the technical field of signal detection, in particular to a method for detecting spatial coordinate information of a moving object. Background technique [0002] When the object is moving in three directions in space, it is necessary to detect the three-dimensional coordinate information of the feature points of the measured object in space in real time. If the camera visual positioning is used, at least two cameras are required to form a stereo vision detection system. , but it is difficult to balance the field of view of stereo vision and its target positioning accuracy, and the controller needs to process a large amount of image data, which leads to low sampling frequency of the system, which is not conducive to real-time detection. At the same time, if the surface of the measured object is If the arc surface is used, the arc surface will interfere with the visual positioning of the camera, resulting in a large error. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C15/00
CPCG01C15/00
Inventor 于存贵玄柳李宗涛黄超李志刚王志翔赵纯陈帅魏浩汪国梁邵培
Owner NANJING UNIV OF SCI & TECH
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