Method for detecting microgravity based on video image change of moving object in spacecraft

A technology of video images and moving bodies, which is applied in the direction of acceleration measurement using inertial force, and can solve problems that have not yet been discovered

Inactive Publication Date: 2012-05-30
SHANGHAI NAN YANG MODEL HIGH SCHOOL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] So far, no introductions and reports have been found on the use of video image changes of moving bodies in spacecraft to detect microgravity related technical literature

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  • Method for detecting microgravity based on video image change of moving object in spacecraft
  • Method for detecting microgravity based on video image change of moving object in spacecraft
  • Method for detecting microgravity based on video image change of moving object in spacecraft

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Embodiment

[0022] Such as figure 1 As shown, in this embodiment, when detecting and collecting images on a synchronized orbit, two or two sets of video images collected by a moving body in the spacecraft in a microgravity state at a certain instant period are taken as the microgravity detection segment and are intercepted by a frame sequence. Create a picture; mark the coordinates of the center of mass of the moving body; estimate the length of the moving body, and calculate 1 unit length in the actual length in the center of mass coordinates; use the center of mass coordinates and the calculated acceleration of the moving body in the spacecraft.

[0023] The video image captures two or more or two or more video images.

[0024] For the video image, the world coordinate system, camera coordinate system and image coordinate system are selected during the coordinate calibration process. The world coordinate system (X w , Y w ,Z w ), this is the reference coordinate used to describe the position ...

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Abstract

A method for detecting microgravity based on video image change of a moving object in spacecraft comprises acquiring two (or more) or two (or more) groups of video images of the moving object in spacecraft under microgravity state in certain instantaneous time interval, to serve as a microgravity detection segment, and cutting into pictures in frame sequence; marking mass center coordinate of the moving object; estimating length of the moving object, and calculating actual length of one unit length in the mass center coordinate; and calculating acceleration of the moving object through the mass center coordinate and actual length. The invention acquires video movement information of object in three-dimensional space through multiple cameras, obtains acceleration of the moving object in three-dimensional space of spacecraft through image information fusion processing, and further obtains microgravity of spacecraft.

Description

Technical field [0001] The invention relates to a method for detecting microgravity in the technical field of detection, in particular to a method for detecting microgravity based on the change of a video image of a moving body in a spacecraft. Background technique [0002] Since humans entered space, the phenomenon of weightlessness and microgravity has attracted more attention. People use airplanes, rockets, etc. to obtain weightlessness and microgravity of objects. The microgravity experiment time is very short, only about 10s, which is difficult to meet the general experimental requirements. . As long-term weightlessness can only be obtained on satellites or spacecraft, the application of weightlessness is greatly restricted. Using satellites, space shuttles and other spacecraft flying around the earth can obtain long-term weightlessness and microgravity of objects, but it is far less convenient on the ground; there is no major difficulty in generating short-term weightlessn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P15/03
Inventor 张智翔
Owner SHANGHAI NAN YANG MODEL HIGH SCHOOL
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