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Bird body motion trail recognition testing device and method based on multilayer sheet light

A motion trajectory and testing device technology, which is applied in the field of bird body motion trajectory recognition testing devices based on multi-layer sheet light to achieve the effect of improving accuracy and convenience

Inactive Publication Date: 2020-08-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

Current methods must use multiple cameras or sensors to obtain approximate data

Method used

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  • Bird body motion trail recognition testing device and method based on multilayer sheet light
  • Bird body motion trail recognition testing device and method based on multilayer sheet light

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Embodiment Construction

[0017] see figure 1 As shown, the bird motion trajectory recognition test device based on multilayer light includes an air cannon 1 , a projectile 2 for simulating a bird body, a high-speed camera 3 , and an illumination light field 4 . The illuminating light field includes a plurality of sheet light fields 5 arranged in parallel and a plurality of light sources (LED light sources can be selected). A light source is in one-to-one correspondence with a patch light field 5 and provides a light source for the patch square 5 . Also, the color of each light source is different. Such as figure 2 As shown, in this embodiment, if the light source color of the first sheet light field is red, a red sheet light field is formed. When the projectile passes through the red sheet light field, a red highlight contour line is formed on the projectile. . Sequentially, the second slice light field can be selected as a green slice light field, the third slice light field can be selected as a...

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Abstract

The invention discloses a bird body motion trail recognition testing device and method based on multilayer sheet light. The accurate motion trail and a motion state of a bird body entering an air inlet channel type long channel are obtained in the whole process through high-speed photography, light field setting and calculation measurement methods, and only one high-speed camera and a common illumination light field are needed. The bird body ejected by an air cannon in an accelerated mode sequentially pass through a plurality of light fields with different colors, bird body position data at different moments are obtained through coordinates, recorded through high-speed photography, in the light fields, and therefore the whole-process bird body motion trail is obtained.

Description

technical field [0001] The invention relates to the test field of bird body impact of aircraft engine blades, in particular to a bird body movement trajectory recognition test device and method based on multi-layer sheet light. Background technique [0002] Aircraft engines often inhale flying birds, which endangers aviation safety. The trajectory of flying birds colliding, bouncing, and moving with the airflow in the air inlet has a great impact on the final impact position of key components such as fans, which must be evaluated in advance. Current methods must pass through multiple cameras or sensors to obtain approximate data. [0003] Therefore, a new technical solution is needed to solve the above problems. Contents of the invention [0004] Purpose of the invention: In order to solve the above problems, provide a bird motion trajectory recognition test device based on multi-layer light, which can obtain the complete motion trajectory recognition test of a bird with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G03B39/00
CPCG01B11/002G03B39/00
Inventor 罗刚张峰旗陈伟赵振华丁振东曹琬婷
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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