Design and uncertainty analysis of non-contact measurement system based on conoscopic holography

2010 ◽  
Vol 24 (7) ◽  
pp. 616-620 ◽  
Author(s):  
Shuyan Ren ◽  
Yonggang Yang ◽  
Hailong Duan ◽  
Jing Li
Keyword(s):  
Uncertainty Analysis ◽  
Measurement System ◽  
Contact Measurement ◽  
Conoscopic Holography

Research of Zero Calibration in Conoscopic Holography Measurement Based on Image

2013 ◽  
Vol 303-306 ◽  
pp. 386-389
Author(s):  
Shu Yan Ren ◽  
Yong Gang Yang ◽  
Hai Long Duan
Keyword(s):  
Extreme Points ◽  
B Splines ◽  
Contact Measurement ◽  
Measurement Result ◽  
Common Path ◽  
Repeatability Error ◽  
Zero Position ◽  
Conoscopic Holography ◽  
Patch Image ◽  
Method Of Adjustment

Non-contact measurement based on conoscopic holography is a kind of interferometry with common path, so it is not influenced much by other factors such as vibration. But the measurement result is affected by the uniformity of the crystal, which is analyzed in this paper, and corresponding method of adjustment based on image is discussed. And B-splines function is used to calculate zero position in measurement image, which is fitted over the patch image in the neighborhood of gray extreme points of the stripes, which is important to reduce the repeatability error, optimize design, and improve the accuracy of system.

Uncertainty analysis of a pavement reflectance measurement system based on a gonio-photometer

2014 ◽  
Vol 12 (5) ◽  
pp. 051201-51204 ◽  
Author(s):  
Shenglong Fan Shenglong Fan ◽  
Muqing Liu Muqing Liu ◽  
Haiping Shen Haiping Shen
Keyword(s):  
Uncertainty Analysis ◽  
Measurement System ◽  
Reflectance Measurement

Research of the Measurement System of Liquid Displacement Based on Angular Tracking

2010 ◽  
Vol 20-23 ◽  
pp. 493-498
Author(s):  
Huan Qi Tao ◽  
Shuang Bao Ma
Keyword(s):  
Measurement System ◽  
Measurement Method ◽  
Laser Light ◽  
Angular Displacement ◽  
Actual Data ◽  
Liquid Level ◽  
Light Reflection ◽  
Contact Measurement ◽  
Displacement Based ◽  
Liquid Displacement

This paper introduces a kind of measurement method of the height of liquid level by the tracking the use of angular displacement, aiming at the difficulties and problems of non-contact measurement for the height of liquid level in ultrasonic. Under the principle of the simultaneous tracking and laser light reflection, it realize the corresponding relationship between the liquid displacement and the light imaging based on the triangulation method. Thus to obtain the actual data of the height of liquid level. That to offer another new option for non-contact measurement.

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