Adjusting system for Tomo-PIV volume light path and calibration plate position correction method
A technology for adjusting the system and optical path, which is applied in optics, measuring devices, optical components, etc., can solve the problems of increasing the complexity of Tomo-PIV's operation process, time-consuming volume optical system adjustment process, and life attenuation, so as to achieve the goal of processing Less difficulty in assembly, improved flexibility, and simple composition
Pending Publication Date: 2022-07-08
HUAZHONG UNIV OF SCI & TECH
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Therefore, the change of the shooting position is often accompanied by the movement of the position of the laser and the optical lens, which in turn brings about a time-consuming adjustment process of the volumetric light system
On the one hand, it will increase the complexity of the Tomo-PIV operation process, and on the other hand, it will also lead to the attenuation of the life of the laser and its optical components due to frequent movement
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0059] In this embodiment, the objective of optical path adjustment is described as follows: the incident light is an elliptical volume light collimated in the short-axis direction, the light propagation direction is required to be changed to exit vertically upward, and the elliptical volume light is required to be cut into rectangles, and the realization of Secondary illumination of the shooting area by volume light.
[0060] In order to realize the adjustment of the optical path of the above volume light, a set of volume light shaping device is built, and the following combination figure 2 - Figure 4, a detailed introduction to the construction of each module:
[0061] 1. Optical path orientation adjustment module
[0062] figure 2 A physical diagram of the optical path orientation adjustment module in this embodiment is shown in . The mirror frame is made of 3030 black aluminum profiles, and the beveled edge is connected by a 45° connector. The laser mirror with the s...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an adjusting system for a Tomo-PIV volume light path and a calibration plate position correction method, and belongs to the field of Tomo-PIV. Comprising a reflector bracket used for fixing a laser reflector, and the included angle between the inclined plane of the reflector bracket and the horizontal plane is 45 degrees; the laser reflecting mirror is used for reflecting the horizontally incident volume light; the pitching table is used for pitching and finely adjusting the angle of the reflector bracket on the xy plane, so that the reflected volume light is emitted in parallel to the yz plane; the diaphragm is used for cutting the volume light emitted in parallel to the yz plane into a specified regular shape with clear boundary intensity; and the lifting platform is used for adjusting the relative height of the device and the incident volume light, so that the horizontally incident volume light can be reflected by the laser reflecting mirror, and the optical axis of the reflected volume light passes through the center of the diaphragm. By adjusting the diaphragm and the lifting platform, on one hand, the volume light is cut into a regular shape, on the other hand, the boundary with low volume light intensity is cut off, and the boundary intensity of the volume light is improved.
Description
technical field [0001] The invention belongs to the technical field of optical design and tomographic particle image velocimetry (Tomographic Partivle Image Velocimetry, Tomo-PIV). Background technique [0002] The tomographic particle image velocimetry technology is a non-contact three-dimensional flow field measurement method developed in recent years. It is widely used in the field of flow measurement because it can truly reflect the three-dimensional flow field. The basic principle is: first illuminate the pre-shot 3D volume domain with volume light, then use multiple cameras to record the motion of particles in the fluid, and finally calculate the 3D velocity field of the fluid through the motion of the particles in the reconstructed 3D particle field. Therefore, to perform the Tomo-PIV experiment, the arrangement of the three-dimensional volume light is first required. [0003] Since Tomo-PIV has high requirements on the light intensity of the flow field, at present T...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G02B27/62G02B7/00G01P1/00G01P5/20
CPCG02B27/62G02B7/00G01P1/00G01P5/20Y02A90/10
Inventor 单峰余志强方兆波刘迎睿
Owner HUAZHONG UNIV OF SCI & TECH