On-line detection of oil on steel coils and thickness measurement using hyperspectral camera

2014 ◽  
Author(s):  
M. Ferte ◽  
C. Roquelet ◽  
D. Glijer ◽  
C. Carteret ◽  
G. Fricout
Keyword(s):  
Thickness Measurement ◽  
Line Detection ◽  
Steel Coils ◽  
On Line ◽  
Hyperspectral Camera

The Research on Capacitance Sensor with Dielectric Film Coating for Thinkness Measurement of Water Film

2011 ◽  
Vol 317-319 ◽  
pp. 1020-1025 ◽  
Author(s):  
Hong Min Li ◽  
Yu Ming Li ◽  
Hai Ying Yu ◽  
Pei Xiang Zhou ◽  
Yi Zhong Zheng
Keyword(s):  
Theoretical Model ◽  
Dielectric Film ◽  
Water Film ◽  
Capacitive Sensor ◽  
Film Coating ◽  
Thickness Measurement ◽  
Line Detection ◽  
Capacitance Sensor ◽  
On Line ◽  
The Common

This paper introduce a new dielectric film coating capacitor, which was used to measure the thickness of the water film in the efficiency of heat-exchange facility. It can overcome the disadvantages that caused by the humidity in the common capacitor. Firstly, the theoretical model of the special capacitive sensor was established. Then based on the theoretical model, we carried on experimental verification. In the premise of ensuring sensitivity, the resolution of the capacitive sensor is up to 10nm, and a high accuracy and on-line detection stability of the thickness measurement for water film were also achieved.

Thickness Measurement in the AEM by Macintosh-Based Analysis of Two-Beam Convergent Beam Patterns

1990 ◽  
Vol 48 (2) ◽  
pp. 504-505
Author(s):  
John F. Mansfield ◽  
Douglas C. Crawford
Keyword(s):  
Electron Microscope ◽  
Video Camera ◽  
Thickness Measurement ◽  
Specimen Thickness ◽  
Crystalline Materials ◽  
Beam Dynamic ◽  
Line Measurement ◽  
On Line ◽  
Image Position ◽  
Convergent Beam

A method has been developed that allows on-line measurement of the thickness of crystalline materials in the analytical electron microscope. Two-beam convergent beam electron diffraction (CBED) patterns are digitized from a JEOL 2000FX electron microscope into an Apple Macintosh II microcomputer via a Gatan #673 CCD Video Camera and an Imaging Systems Technology Video 1000 frame-capture board. It is necessary to know the lattice parameters of the sample since measurements are made of the spacing of the diffraction discs in order to calibrate the pattern. The sample thickness is calculated from measurements of the spacings of the fringes that are seen in the diffraction discs. This technique was pioneered by Kelly et al, who used the two-beam dynamic theory of MacGillavry relate the deviation parameter (Si) of the ith fringe from the exact Bragg condition to the specimen thickness (t) with the equation:Where ξg, is the extinction distance for that reflection and ni is an integer.

Development of Glucose On-line Detection System for Fermentation Process

2013 ◽  
Vol 40 (12) ◽  
pp. 1945-1949
Author(s):  
Xue-Jin GAO ◽  
Guang-Sheng LIU ◽  
Li CHENG ◽  
Ling-Xiao GENG ◽  
Ji-Xing XUE ◽  
...  
Keyword(s):  
Fermentation Process ◽  
Detection System ◽  
Line Detection ◽  
On Line

Research Situation Analysis of On-line Detection Technology for Power Transformer Winding Deformation

2020 ◽  
Vol 13 (6) ◽  
pp. 823-832
Author(s):  
Zhenhua Li ◽  
Weihui Jiang ◽  
Li Qiu ◽  
Zhenxing Li ◽  
Yanchun Xu
Keyword(s):  
Detection Method ◽  
Theoretical Research ◽  
Line Detection ◽  
Response Analysis ◽  
Advantages And Disadvantages ◽  
Detection Technology ◽  
The Future ◽  
Transformer Winding ◽  
On Line ◽  
Winding Deformation

Background: Winding deformation is one of the most common faults in power transformers, which seriously threatens the safe operation of transformers. In order to discover the hidden trouble of transformer in time, it is of great significance to actively carry out the research of transformer winding deformation detection technology. Methods: In this paper, several methods of winding deformation detection with on-line detection prospects are summarized. The principles and characteristics of each method are analyzed, and the advantages and disadvantages of each method as well as the future research directions are expounded. Finally, aiming at the existing problems, the development direction of detection method for winding deformation in the future is prospected. Results: The on-line frequency response analysis method is still immature, and the vibration detection method is still in the theoretical research stage. Conclusion: The ΔV − I1 locus method provides a new direction for on-line detection of transformer winding deformation faults, which has certain application prospects and practical engineering value.

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