On-line Yarn Evenness Detection Using CCD Image Sensor
This paper introduces the method of on-line measurement of the yarn evenness using a CCD image sensor. The sensor is mounted on a movable bracket of the small car. The obtained yarn coefficients of variation in the diameter through computer and digital image processing techniques are compared with those of using off-line USTERII evenness tester. To a certain extent, avoiding affection of the incident light intensity, the CCD sensor overcomes the shortcomings of the conventional photoelectric sensors. The sensor also uses a 250,000-pixel CCD equivalent to that of a conventional machine vision sensor. This allows presence detection and recognition of different objects, which have up till now been performed by a human, to be executed fast and accurately.Combined with modern control theory, fuzzy control and expert system are designed to collect and process real-time data of the measuring device. The results of on-line measurement show that the average error accuracy is less than 5.5％ in the study. In addition, it is also found that the achieved data from the on-line device are coherent and correlative with USTER statistical bulletin 2001. Therefore, the development of the portable, higher cost-effective measuring device has a positive role in promoting the textile industry and improving the quality of the yarn.
Yarn Evenness On-line Measurement CCD Image Sensor Signal Processing
Qin Weigang
School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin, China, 300160
国际会议
2011 China Control and Decision Conference(2011中国控制与决策会议 CCDC)
四川绵阳
英文
1787-1790
2011-05-23（万方平台首次上网日期，不代表论文的发表时间）