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Method for intercepting separate image of space electric connector

A technology of electrical connectors and connectors, which is applied in the field of image processing, can solve problems such as inability to use online real-time detection and time-consuming detection, and achieve the effects of improving efficiency, reducing time-consuming time, and improving economic benefits

Active Publication Date: 2016-06-22
CHINA JILIANG UNIV
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  • Abstract
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Problems solved by technology

[0011] It can be seen that this method takes a long time to detect and cannot be used for online real-time detection

Method used

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  • Method for intercepting separate image of space electric connector
  • Method for intercepting separate image of space electric connector
  • Method for intercepting separate image of space electric connector

Examples

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with accompanying drawing.

[0032] like figure 2 As shown, in order to effectively test the separation performance of the electrical connector, it is necessary to apply an external pulling force to the electrical connector, and the pulling force value is obtained by a pulling force sensor. In view of the fact that the tension sensor is susceptible to external interference when collecting the tension, the change of the tension is a continuous smooth curve that changes with time by using the filtering method. When the tension reaches the peak value, that is, the inflection point, the aerospace electrical connector begins to separate. It can be seen from this that the change of the tension value can be used to preliminarily judge the separation time of the aerospace electrical connector.

[0033] The invention sends a pulse trigger signal to a tension sensor and an image acquisition card through an ext...

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Abstract

The invention discloses a method for intercepting a separate image of a space electric connector. The method comprises following steps of: acquiring a pulling force value and an image synchronously by using an external synchronizing signal source to send a pulse trigger signal to a pull force sensor and an image acquisition card, and storing the pulling force value and the image in a computer cache and a camera cache respectively; setting a condition that pulling force is acquired and an image is captured by a camera every 0.5 ms, and establishing a corresponding relation; enabling a change in the pulling force to be a continuous smooth curve varying with time by using a median filtering method; performing derivation by using two pulling force; when dy / dt < 0 emerges at the first time, recording time t and extracting n pictures before the time t and n1 pictures after the time t from the camera cache, wherein a separation course image is included in the pictures; and processing the pictures by using a difference method so as to obtain the required separation course image.

Description

technical field [0001] The method is applied to effectively extract the image of the separation process of aerospace electrical connectors in a high-speed motion environment, and belongs to the technical field of image processing in a high-speed motion environment. Background technique [0002] Aerospace electrical connectors are widely used in rockets, missiles and other occasions that need to be separated. It is a port for electrical connection and signal transmission. It is a basic component necessary to form a complete system. Its separation performance is crucial to the normal operation of the entire system. . However, the domestic research on aerospace electrical connectors started relatively late, and most of the research focused on its connection reliability and other aspects, and did not conduct in-depth research on its separation characteristics. There is no standard separation performance testing equipment, and only Small-scale, non-automatic, and single-function...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G01D21/02
CPCG01D21/02G06T7/0002G06T2207/10016
Inventor 洪涛赵佃云
Owner CHINA JILIANG UNIV
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