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Device and method for alignment measurement and adjustment of particle image velocimetry (PIV) camera of centrifugal pump

A centrifugal pump and camera technology, applied in the field of centrifugal pump PIV camera calibration and adjustment devices, can solve the problems of not providing a method for accurately adjusting the camera to be parallel to the measured plane, and achieve the effect of avoiding errors and improving the accuracy of the rotation angle

Active Publication Date: 2015-04-22
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In "A 3D Laser Calibration and Positioning Instrument for Particle Image Velocimeter" (2010), Xu Shengjin et al. proposed a device for adjusting the position of the laser and the camera with assistance, but did not give an accurate adjustment of the camera and the measured plane. parallel approach

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  • Device and method for alignment measurement and adjustment of particle image velocimetry (PIV) camera of centrifugal pump
  • Device and method for alignment measurement and adjustment of particle image velocimetry (PIV) camera of centrifugal pump
  • Device and method for alignment measurement and adjustment of particle image velocimetry (PIV) camera of centrifugal pump

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Embodiment Construction

[0030] The details and working conditions of the specific device proposed by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] The device includes model pump 1, calibration card 2, camera 3, computer 4, mobile base 5, X-direction adjustment frame 6, Y-direction adjustment frame 7, Z-direction adjustment frame 8, X coordinate scale 9, Y coordinate scale 10, Z Coordinate scale 11, rotating base 12, roller 13, Y-direction adjustment frame bracket 14, Y-direction screw 15, Y-direction slide rail 16, Z-direction adjustment frame bracket 17, Z-direction screw 18, Z-direction slide rail 19, X Adjustment frame bracket 20, X-direction screw 21, X-direction slide rail 22, Y-direction screw runner 23, Z-direction screw runner 24, X-direction screw runner 25, large gear plate 26, small gear plate 27, fixed plate 28, pinion disc knob 29, vernier angle ruler 30, fixed screw 31.

[0032] figure 1 It is a diagram of the camera me...

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Abstract

The invention discloses a device and a method for alignment measurement and adjustment of a particle image velocimetry (PIV) camera of a centrifugal pump. The device and the method are used for alignment measurement and adjustment of camera shooting gesture in a centrifugal pump PIV internal flow experiment and relate to the field of fluid experiments. The device comprises a camera alignment measurement and adjustment frame, a model pump, the camera and a computer. The camera alignment measurement and adjustment frame comprises a movable base, an X-direction adjustment frame, a Y-direction adjustment frame, a Z-direction adjustment frame, an X-coordinate scale plate, a Y-coordinate scale plate, a Z-coordinate scale plate, a vernier angle ruler and a rotating base. A demarcation card is arranged on the surface of a test window of the model pump. The camera alignment measurement and adjustment frame can be utilized to accurately measure and adjust camera shooting gesture which can be accurately adjusted by measuring demarcation card images shot by the camera to enable a shooting plane and a test plane of the camera to coincide. The method is simple, easy to achieve and high in generality and provides an effectively way for alignment measurement and adjustment of PIV camera shooting gesture of the centrifugal pump.

Description

technical field [0001] The invention relates to the field of fluid mechanics experiments, in particular to a measuring and adjusting device and method for a PIV camera of a centrifugal pump. Background technique [0002] Particle Image Velocimetry (PIV for short) is a measurement technology that uses flow field images to obtain flow field velocity. It can realize two-dimensional and three-dimensional non-contact measurement and is an important means of testing flow field velocity in the field of fluid mechanics. . Due to the characteristics of multi-point measurement, non-contact and high precision, it has been widely used in engineering fields such as fluid mechanics, fluid machinery, chemical industry, aerospace, shipbuilding and marine engineering. In order to obtain better experimental results, it is necessary to ensure that the plane to be measured in the flow field, the laser irradiation plane, and the camera shooting plane have a good degree of coincidence. However, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D15/00
Inventor 刘厚林杨洪镔王勇王凯任芸谈明高
Owner JIANGSU UNIV
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