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Three-dimensional model attitude angle video measuring system for wind tunnel model test

A technology of model test and three-dimensional model, which is applied in measurement devices, aerodynamic tests, and optical devices, etc., can solve the problems of lack of real-time performance and inability to measure the sideslip angle of the model, and achieve the effect of improving the signal-to-noise ratio.

Inactive Publication Date: 2010-04-28
中国航空工业空气动力研究院
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Problems solved by technology

[0005] The common points of these systems are: ①The equipment has the ability to measure a single angle; ②The equipment cannot measure the sideslip angle of the model; ③The equipment does not have real-time performance and requires post-processing

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  • Three-dimensional model attitude angle video measuring system for wind tunnel model test
  • Three-dimensional model attitude angle video measuring system for wind tunnel model test
  • Three-dimensional model attitude angle video measuring system for wind tunnel model test

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Embodiment Construction

[0013] In conjunction with the accompanying drawings, the following embodiments are given to further illustrate the technical solutions of the present invention.

[0014] The 3D model attitude angle video measurement system for wind tunnel model test is composed of digital camera, zoom camera, zoom lens controller, active luminous markers, high-speed computer, acquisition control measurement software, several active luminous markers [4] installed Arranged on the model to emit light waves with a fixed wavelength, two digital cameras [1] are fixedly installed to form a stereoscopic video measurement, the zoom lens controller [2] is connected with a high-speed computer [3], and controls the zoom camera [6], The zoom camera [6] is equipped with a filter that can pass a specific wavelength. The filter can pass the fixed-wavelength light wave of the active luminescent marker [4]. Two digital cameras [1] record, collect and measure in real time, and the collected images are sent to hi...

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Abstract

The invention relates to a three-dimensional model attitude angle video measuring system for a wind tunnel model test, in particular to a three-dimensional model attitude angle video measuring system for wind tunnel model three freedom degrees. For increasing the precision of wind tunnel model angle real-time measurement, the three-dimensional model attitude angle video measuring system overcomes the common problems of systems that the prior device has single-angle measuring ability, can not measure a side slip angle of a model, has no real-time performance, and needs postprocessing and the like. The three-dimensional model attitude angle video measuring system is composed of digital cameras, a zoom lens, a zoom lens controller, a driving lightening marking point, a high-speed computer and collection controlling and measuring software, wherein the driving lightening marking point (4) is arranged on the model, the two digital cameras (6) are used for recording, collecting and measuring in real time, the zoom lens controller (2) is connected with the high-speed computer (3) and is used for controlling the zoom lens (1), collecting images and transmitting the images to the high-speed computer (3), and the image data is processed by the collection controlling and measuring software (5) to measure and process the device in real time so as to obtain the real three-dimensional attitude angle of the model.

Description

1. Technical field [0001] The invention relates to a three-dimensional model attitude angle video measurement system for wind tunnel model tests, in particular to a three-dimensional model attitude angle video measurement system for wind tunnel model three-degree-of-freedom. 2. Background technology [0002] In order to improve the accuracy of real-time measurement of wind tunnel model angles, wind tunnel workers and research institutions at home and abroad have developed various angle measurement systems. The development history of wind tunnel model angle real-time measurement technology is inseparable from the requirement of angle measurement error in wind tunnel test, which is the result of the development of science and technology. It has been decades since the first-generation acceleration angle-of-attack sensor developed in the late 1940s to the current video measurement model attitude angle. A variety of angle measurement methods have been developed. So far, the deve...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/00G01B11/26
Inventor 蒋甲利牛中国肖亚克许相辉刘捷
Owner 中国航空工业空气动力研究院
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