Contents:

Visual inspection is a dominant force in modern detection technology which is a new research direction based on the digital image processing, pattern recognition and detection technology. This detection method has a lot of remarkable characteristics, such as, high degree of intelligence, a large amount of measuring information, high detection efficiency, strong universality and other excellent properties.

The research group has engaged in the detection of visual field of research from the beginning of 1990 and accumulated a lot of rich research experience and achievements.

CompletedProjects:

Dial indicator intelligent calibrator (1991):

This project is a commissionedproject forDaqing City Technical Supervision Bureau. Itreplaces human eyes to get recognition and interpretation of all kinds of pointer type meter indication by using machine vision and artificial intelligence technology. This technology has applied for patentswhich is advancedworld level at the end of the 1980s. It was completed in 1991 and used in Daqing City Technology Supervision bureau now. Project participants: Puzhao-bang, Zhao Hui, Liu Guodong.

921-3 spaceship parts arc length on-line measuring system (1998):

This project is one of “Nine Five” research projects for Aerospace Industry Corporation. It achieves 8 meters length non-contact precision dynamic measurement and total uncertainty<0.5mm by using image measuring technology and sectional measurement technology. It was completed in 1998 and used for spaceship shell production line of Beijingsatellite factory now. Project participants:Puzhao-bang, Zhao Hui, Liu Guodong.

Optical instrument and optical graph measurement system (1999):

This project is a science and technology research project forHarbin City Committee. It realizedthe full automation of all kinds of optical instruments measuring and aiming by using image measuring principle. Moreover, it can be popular used in design and development ofthe universal tool microscope instrumentation technology and new modern equipment.It was completed in 1999 and applied to measurement of Harbin city institute now. Project participants: PuZhaobang, Zhao Hui, Liu Guodong.

Multi function image aiming systems research (1999):

This project is a technical supervision project for State Bureau of quality. It realizedmeasurement automation and aiming of all kinds of optical instruments ( such as the universal tool microscope etc.) by using image measurement principle.Moreover, it can achieve multiple parameter measurement of small size parts. It was completed in 1999 and applied to Harbin city instituteof measurement now. Project participants:Puzhao-bang, Zhao Hui, Liu Guodong.

Elastic element rigidity measuring instrument (2002):

This project is a commissionedproject for Shanghai Aerospace Corporation group 812. Itachieved non contact measurementof elastic deformation by adopting computer vision method. Furthermore, it combined with intelligent automatic way and achieved the precision measurement of static stiffness. It was completed in Oct. 2002and delivered to Shanghai Aerospace group 812. Project participants:Zhao Hui, Yu Pu, Liu Weiwen.

Digital Abbe refractometer photoelectric detection system (2003):

This project is a commissionedproject for Shanghai Precision Scientific Instruments. It achieved automatic detection of dark field boundary by using linear array CCD. It was completed by the end of 2003 and had successfully developed a series of products. Project participants:Zhao Hui, Tao Wei, Hua Jun, Liu flight.

Drill pipe thickening section automatic detection system (2008):

This project is a technology research project for Shanghai Baosteel.It realized non-contact and automatic detection of the inner contour of the drill pipe thickening section by using a unique structure in laser and visual detection technology. This research was a world first and completed by the end of 2008.Now it applied to drill pipe production line of Baosteel steel tube factory. Project participants: Zhao Hui, Tao Wei, Wang Zhanbin, Tang Yan, Li Jie, Yan liang.

3D vision measuring instrument (2009):

This project is a commissionedproject forGuilin Guanglu group. It realized the automatic aiming and identificationby adoptingthe original " electronic front sight " technology. First, combined focusing function realized the quick focus of full range automatic. Second, the original light source automatic control technology guaranteedthe consistency of the measurement precision. Third, the original built-in type self calibration method ensured the stability of measuring accuracy. This instrumentwas completed in 2009 and participated in the 2009 Beijing international machine tool exhibition. Project participants:Zhao Hui, Tao Wei, BaoGetang, Wang Wei, Yang Jinfeng, Song Xuhui, Ding Yunwen, Wu Wencen.

Wheel rail geometric contact parameters adaptive analysis method research (Ministry of Railways ):

This project is a science and technology program ( 2010G022 )fotMinistry of Railways. It realized on-line monitoring of high-speed wheel rail geometric contact parameters by using structured light method and computer vision technology. It was completedby the end of 2011. Project Executive: Zhao Hui, Tao Wei, Wang Mengxue.

Researching projects:

Study on knife gate in vision detection technology (Xuchanggroup ):

This project is a commissionedproject for the enterprise.It realized on-line monitoring of the switch position and real-time switch state by using the vision and image processing technology. This project is expected to complete by the end of 2012. Project Executive: Zhao Hui, Tao Wei, Fan Jun.

Large sized frame deformation monitoring system (Shanghai Aerospace group 805 ):

This project is a key scientific and technological project for Shanghai Aerospace group 805. It s goal is to achieve on-line detection of large size deformation of frame by using computer vision and the original inverse reflection technique. Project Executive: Tao Wei, Liu Weihao, Wang Mengxue.