Dynamic system multi-physics field imaging detection system

Abstract

The invention discloses a dynamic system multi-physics field imaging detection system which comprises a digital projection illuminating device. The digital projection illuminating device is arranged right in front of a measured vibration object, multi-spectral cameras are symmetrically arranged on the two sides of the digital projection illuminating device, and the surface of the measured vibration object radiates under the irradiation of the digital projection illuminating device. A synchronous sampling device controls the multi-spectral cameras to capture a radiance image of the measured vibration object at the same time, an image capture card is connected with the multi-spectral cameras to be used for collecting data and outputting the image data to an information storing device and an information processing system, the synchronous sampling device is connected to the information processing system, and the information processing system is a PC. According to the dynamic system multi-physics field imaging detection system, a digital projector is used for lighting, the synchronous sampling system is additionally arranged, so that measuring errors are reduced, and the measuring accuracy is improved; the wavelength measuring range is wide, a plurality of wavebands can be measured, the multiple physical quantities such as the vibration source temperature and the materials can be detected, and therefore the measuring reliability and the measuring precision are improved.

Description

technical field [0001] The invention relates to a vibration detection system, in particular to a dynamic system multi-physical field imaging detection system. Background technique [0002] Around us, vibration exists all the time. Vibrations generated by cars and trains; vibrations generated by tsunamis and earthquakes; vibrations of the internal structure of flying space shuttles, etc. All are closely related to our human life and work, so how to accurately and quickly detect adverse vibrations and correctly analyze the results is very important. [0003] At present, people have invented many ways to measure vibration, such as traditional contact and laser-based non-contact vibration testing methods, but these methods are difficult to achieve multi-spectral, high-precision vibration testing. Among them, the contact vibration test method needs to attach or paste sensors (such as accelerometers, etc.) to the surface of the measured object, and it is difficult to detect some...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, although the measurement method based on machine vision solves some of the above-mentioned problems, there are still many problems, such as: due to the deficiency of the general lighting system, the vibration of high-gloss and complex surfaces cannot be detected well, the detection accuracy and Low accuracy; lack of synchronous sampling device, which increases the error of subsequent information processing; ordinary high-speed camera is used for detection, the measurement physical quantity is single, and the measurement efficiency is low

Among them, the camera vibration detection device designed by patent No.200910170797.9 adopts the method of machine vision to detect vibration, but the camera it uses is not a multi-spectral camera, which cannot meet the requirements of high-quality images. The collected information only contains image information and cannot reflect Changes in physical quantities such as temperature and materials of the vibration source

It is difficult to realize multi-spectrum and high-precision vibration detection, which has great limitations

Images