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Method for detecting position and attitude of micro cylindrical cavity target by using target collimating sensor

A detection method and sensor technology, applied in the direction of instruments, measuring devices, optical devices, etc., can solve the problems of roughness, inability to meet the needs of multiple beams to guide quickly and in parallel to the target point, and low detection accuracy of the target position, so as to achieve convenient operation and detection The effect of fast speed and reduced error

Inactive Publication Date: 2014-04-02
SHANGHAI UNIV
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Problems solved by technology

When shooting a target, since the laser beam has to be focused on the center of the upper and lower surfaces of the target, generally speaking, the detection accuracy of the above two detection methods for the target position is relatively low, especially the detection of the target attitude is relatively rough, which cannot meet the requirements of realizing multi-beam fast parallel guidance to target requirements

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  • Method for detecting position and attitude of micro cylindrical cavity target by using target collimating sensor
  • Method for detecting position and attitude of micro cylindrical cavity target by using target collimating sensor

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Embodiment Construction

[0019] A preferred embodiment of the present invention is described as follows in conjunction with accompanying drawing:

[0020] refer to figure 1 , figure 2 , the steps of the method for detecting the pose of a micro-column cavity target using a target alignment sensor in this embodiment are as follows:

[0021] (1) Object distance adjustment

[0022] A target alignment sensor composed of three orthogonally arranged CCD image sensors A, B, and C is used, and the intersection of the optical axes of the three CCD image sensors A, B, and C is used as the reference point for the detection of the target alignment sensor. , the micro-column cavity target is placed on the reference point detected by the target alignment sensor, and the object distances of the three CCD image sensors A, B, and C are respectively adjusted until the upper and lower end faces of the micro-column target and the upper and lower edges of the side are imaged clear;

[0023] (2) Feature point extractio...

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Abstract

The invention relates to a method for detecting the position and attitude of a micro cylindrical cavity target by using a target collimating sensor. When the method is used for detection, a target collimating sensor consisting of three CCD (Charge Coupled Device) image sensors which are in orthogonal arrangement is adopted; the intersection point of optical axes of the three CCD image sensors is taken as a reference point for placing a target, and the images of a micro cylindrical cavity target are acquired by the target collimating sensor from different viewing angels; and characteristic values of the images of the images of the micro cylindrical cavity target, which are extracted by the three CCD image sensors are combined, and the space coordinate and azimuth rotation matrix of the micro cylindrical cavity target are calculated according to the characteristic values so as to determine the six-dimensional position and attitude of the micro cylindrical cavity target in space. The new method for detecting the position and attitude of the micro cylindrical cavity target, provided by the invention, has the advantages of improving repeatability accuracy in position detection for the micro cylindrical cavity target and especially reducing errors in attitude direction for the micro cylindrical cavity target, is convenient to operate and has good in stability and has a high detection speed.

Description

technical field [0001] The invention relates to a method for detecting the position and posture of a tiny target. In particular, it relates to a method for detecting the pose of a micro-column cavity target with a target alignment sensor. technical background [0002] With the further aggravation of the energy crisis, people have been devoting themselves to finding new types of renewable energy. Inertial Confinement Fusion (ICF) is a technology that can completely solve human energy problems, and it is a hot technology that developed countries are competing to study in recent years. In the inertial confinement fusion experiment, it is necessary to detect the position and attitude of the millimeter-scale tiny target filled with fusion fuel through the target alignment sensor, and then accurately locate it in the center of the vacuum target chamber with a diameter of several meters by the positioning mechanism. The overall accuracy of the system requires At the micron level,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00G21B1/25
CPCY02E30/10
Inventor 章亚男陈旭宋薇沈林勇
Owner SHANGHAI UNIV
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