A high-precision vision detection and measurement system using mobile robot is established for the industry field detection of motorcycle frame hole and its diameter measurement. The robot path planning method is rese...A high-precision vision detection and measurement system using mobile robot is established for the industry field detection of motorcycle frame hole and its diameter measurement. The robot path planning method is researched, and the non-contact measurement method with high precision based on visual digital image edge extraction and hole spatial circle fitting is presented. The Canny operator is used to extract the edge of captured image, the Lagrange interpolation algorithm is utilized to determine the missing image edge points and calculate the centroid, and the least squares fitting method is adopted to fit the image edge points. Experimental results show that the system can be used for the high-precision real-time measurement of hole on motorcycle frame. The absolute standard deviation of the proposed method is 0.026 7 mm. The proposed method can not only improve the measurement speed and precision, but also reduce the measurement error.展开更多
In order to classify the gears and achieve high precision measurement results,a non-contact gear measurement system based on the laser vision is developed in this paper.The laser vision precision measurement method(LV...In order to classify the gears and achieve high precision measurement results,a non-contact gear measurement system based on the laser vision is developed in this paper.The laser vision precision measurement method(LVPMM) is proposed to ensure the accuracy.Experimental results indicate that the gear measuring uncertainty is 2.1 μm.The precision can satisfy the gear measurement requirements for two-grade or under two-grade standard gears in industry,and can classify the gears very well.展开更多
基金supported by the National Natural Science Foundation of China(Nos.60808020 and 61078041)the Tianjin Research Program of Application Foundation and Advanced Technology(No.10JCYBJC07200)
文摘A high-precision vision detection and measurement system using mobile robot is established for the industry field detection of motorcycle frame hole and its diameter measurement. The robot path planning method is researched, and the non-contact measurement method with high precision based on visual digital image edge extraction and hole spatial circle fitting is presented. The Canny operator is used to extract the edge of captured image, the Lagrange interpolation algorithm is utilized to determine the missing image edge points and calculate the centroid, and the least squares fitting method is adopted to fit the image edge points. Experimental results show that the system can be used for the high-precision real-time measurement of hole on motorcycle frame. The absolute standard deviation of the proposed method is 0.026 7 mm. The proposed method can not only improve the measurement speed and precision, but also reduce the measurement error.
基金supported by the National Natural Science Foundation of China(Nos.60808020 and 61078041)the Tianjin Research Program of Application Foundation and Advanced Technology(No.10JCYBJC07200)
文摘In order to classify the gears and achieve high precision measurement results,a non-contact gear measurement system based on the laser vision is developed in this paper.The laser vision precision measurement method(LVPMM) is proposed to ensure the accuracy.Experimental results indicate that the gear measuring uncertainty is 2.1 μm.The precision can satisfy the gear measurement requirements for two-grade or under two-grade standard gears in industry,and can classify the gears very well.
