A flow field imaging system and imaging method based on magnetoresistance effect

Abstract

In order to improve the accuracy and to reduce the cost of a flow field imaging device, the invention discloses a flow field imaging system and an imaging method based on magneto-resistance effect. The system comprises a power supply, a magnetic field generation module, a plurality of magnetic field sensing modules, an analysis circuit module, a signal conversion module, an imaging module and magnetic induction particles. The power supply is connected to the magnetic field generation module; the magnetic field generation module surrounds a to-be-detected space; a plurality of arrays are arranged inside the to-be-detected space; a plurality of magnetic field sensing modules are arranged in each array; the output ends of the plurality of magnetic field sensing modules are respectively connected to the input ends of the analysis circuit module; the output ends of the analysis circuit module are connected to the input ends of the signal conversion module and the imaging module; the outputend of the signal conversion module is connected to the input end of the imaging module; and the magnetic induction particles are uniformly distributed in the to-be-detected space. According to the flow field imaging system and the imaging method based on magneto-resistance effect, the invention belongs to the technical field of imaging, and has the advantages of being simple and easy to implementin structure, and being simple and convenient to operate and analyze.

Description

technical field [0001] The invention belongs to the field of imaging technology, and in particular relates to a magnetoresistance effect-based flow field imaging system and an imaging method. Background technique [0002] With the development of science and technology, people rely more and more on fluid mechanics related subjects such as hydraulics and aerodynamics. Whether it is in military fields such as aerospace, ships and submarines, or people's livelihood sectors such as food and medicine, roads and bridges, more and more scientific qualitative understanding and more and more refined quantitative analysis of the flow environment in which objects are located are required. [0003] Generally, there are two ways to obtain quantitative information of the flow field: experimental measurement and numerical simulation. At present, image velocity measurement technology based on laser technology, nuclear magnetic resonance and other principles is developing rapidly, especially...

AI Technical Summary

Problems solved by technology

Typical particle image velocimetry (PIV) based on laser technology is a flow measurement technology gradually developed in the 1980s; the PIV hardware system includes tracer particles, light sources, optical paths, cameras, and lenses; The followability and astigmatism of the tracking particles, the collimation of the light source, the stability of the optical path, and the camera all have high requirements; in fact, whether it is laser technology or nuclear magnetic resonance, the measurement accuracy is low, and the cost price has always been high. , which limits the further development of flow field imaging technology

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