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The camera-based method of ice thickness measurement


It is difficult to find the exact location of errors. 4 test machine force the elimination of error of method in the process of verification testing machine, if the force error out of range, should be given to adjust the repair. Only master tester error rule, the right to find the location of errors in order to transfer ultra poor test machine repair qualified. Here are some test machine force the elimination of error method. 4.1 to eliminate the error caused friction test machine is the result certified by the original use, but due to the use of the process for various reasons, resulting in friction, the force value tolerance test machine. This error is a certain law, such as being poor generally occurs in the main part of the difference generally occurs in the negative part of the force, and often a great impact on small load error, the error of the large load small. If the test machine is very sensitive dial indicators,[link widoczny dla zalogowanych], and even after each stop has a change of zero, then inevitably produce a negative error, which most of the swing axis is due to excessive friction caused by bearing and should be demolished cleaning. If there was no indication error of law of the phenomenon, if they were all negative error, there may be a middle or last test point error, which shows a test machine to run them by the resistance of moving parts in the middle or at the end the pendulum of resistance. 4.2 The testing machine installed to eliminate the error caused when friction is eliminated, the force value of the tester is still ultra-poor, then we should carefully check the test machine is installed properly. 4.3 Dynamometer testing machines eliminate the parameters change the error checks generated Dynamometer testing machine parameters have changed. If the value of the tester error of force by the positive to negative or from negative to positive, then push the board has changed the angle 』B should be adjusted. 5 summarizes the force as measured at a competent test staff, not only to be test test machine, more importantly, how to force the value of tolerance of the testing machine of the adjusting to the qualified range, so as to satisfy the customer. To test machine produced a comprehensive and detailed analysis of the error. Not without a good analysis, you use the weight of the pendulum of change approach to eliminate error. This is not a good way, because using this method at the time was passing, but not a long time there will be changes. To correct the error analysis and determine the testing machine produced parts, and can quickly be eliminated, we should be able to through a lot of practice to do so. References [I] JJGI39 - 1999, tension, stress, and universal testing machine verification. f2] Zhao forward editor. Mechanical measurement. Beijing: China Metrology Publishing House, 2004. About the author: Feng Suhai, male, engineer. Work unit; Institute of Measurement and Testing Technology, Jiangsu Province. Address: Guanghua Street, Nanjing 210007, Jiangsu Province, No. 3. Received :2006-05 A l2 (on page 5) in accordance with the above two processing steps, we get the standard amount of the thickness of ice blocks and P. () And P () (Units: Pixels), in accordance with the formula (1), according to the thickness of gauge block (5mm), you can get the image height. Since measurements are carried out on the image pixels, the measurement can achieve higher resolution and accuracy. After the picture on the edge of the computing extracted to calculate the average thickness of the ice h = 2.4mm, with good results. 6 Conclusions on the measurement method proposed in this paper the analysis of ice thickness measurement using the image can be achieved. In the edge extraction process, you can use different operators to achieve. As a result of the comparison method, make up some of the shortcomings of edge extraction,[link widoczny dla zalogowanych], can better locate the edges,[link widoczny dla zalogowanych], making the measurement with high precision and resolution. References [1] Zhu Xiuchang, Liu Feng, Hu Dong. Digital image processing and image communication. Beijing: Beijing University Press, 2002,2. [2] Zhang Wei Gu, a small studio with the universe, Lin Fuzong adaptation. Image File Format (I) (below) for a Windows programming. Beijing: Tsinghua University Press, 1996. [3] Zhou Chong, Cheng Whirlpool. Image Processing in the Library of frost thickness. Shanghai Jiaotong University, 2001,8:35. [4] section Rui Ling, Qing-Xiang Li,[link widoczny dla zalogowanych], Li and. Review image edge detection. Optoelectronic Technology, 2005,5 (3): 31. [5] Zhou Xinming, Ramsay, Xu Yan. Several image processing edge detection algorithms. Modern Electric Power, 2000,8 (3): 17. Author: Ye Lin, male, master, professor. Company: Huazhong University of Science. Address: Hongshan District, Wuhan 430074, China Luo Yu Road 1037,[link widoczny dla zalogowanych], Huazhong University of Science and Engineering. Wang Ying, Huang Qin, Zhang Jie, Huazhong University of Science and Technology (Wuhan 430074, China). Received Time: 2006 A one o9 o4

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