On-Line Automatic Measurement of Contact Resistance of Metal to Carbon Relays Used in Railway Signaling

The quality of a software development process is based on a large spectrum of various elements that must be identified and assessed. The majority of elements can be measured quantitatively and possibly using an automatic process. Some elements, however, are rather subjective and depend strongly on different opinions of people using or evaluating the software development process. An automatic measurement approach is difficult to achieve (for example by on-line questionnaires or surveys inserted inside software products or software development tools). The foundation for all assessments is a set of elements that will be at a certain point of development or use measured and evaluated.

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Research of On-Line Large-Size Forging Measurement System Based on LabVIEW

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.430-432.1577 ◽

2012 ◽

Vol 430-432 ◽

pp. 1577-1580

Author(s):

Xian Ling Zhao ◽

Jian Sheng Liu

Keyword(s):

Measurement Error ◽

Laser Beam ◽

Measurement Errors ◽

Three Dimensional ◽

Automatic Measurement ◽

Manual Measurement ◽

Large Size ◽

On Line ◽

Large Measurement ◽

Time Changes

Forging temperature is usually around 1000°C in free forging scene. Manual measurement leads to large measurement errors. Adopting the non-contact 3D scanning technology, make the laser beam sweep across the forging surface to get three-dimensional coordinates of the points on the forging surface in space. Neighboring scan points separate by less than 0.25mm. The measurement error is less than 6mm. The coordinate,s data are sent to the LabVIEW procedure. The procedure analyzes the coordinates to calculate the size of the large-size forging to realize automatic measurement of the forgings. The procedure can also reconstruct the image of the large-size forging. These make us detect the real-time changes of the forging far from the free forging scene.

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The Study of Thread Parameter Based on Machine Vision for Automatic Measurement

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.401-403.1158 ◽

2013 ◽

Vol 401-403 ◽

pp. 1158-1161

Author(s):

Jing Chao ◽

Zhan Feng Liu ◽

Yan Shu Liu

Keyword(s):

Machine Vision ◽

Image Recognition ◽

Measurement Accuracy ◽

Linear Array ◽

Image Data ◽

Automatic Measurement ◽

Measuring Method ◽

Line Measurement ◽

On Line ◽

Tooth Type

In order to improve the measurement accuracy of thread parameter and can realize the automatic measurement of parameter, this paper propose a non-contact measuring method which is based on machine vision, we use the industrial linear array CCD with high-precision scan the projection of the thread which in the field of parallel light, using the image recognition, image acquisition, image data processing technology enable your computer finish the pitch diameter, thread pitch, tooth type angle on a non-contact of real-time, on-line measurement. This article also provides detailed measuring method with the main parameters of thread.

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Non-contact resistance and capacitance on-line measurement of lubrication oil film in rolling element bearing employing an electric field coupling method

Measurement ◽

10.1016/j.measurement.2016.05.080 ◽

2016 ◽

Vol 91 ◽

pp. 606-612 ◽

Cited By ~ 5

Author(s):

Kai Xie ◽

Long-Chao Liu ◽

Xiao-Ping Li ◽

Han-Lu Zhang

Keyword(s):

Electric Field ◽

Contact Resistance ◽

Coupling Method ◽

Rolling Element Bearing ◽

Oil Film ◽

Field Coupling ◽

Line Measurement ◽

Rolling Element ◽

On Line ◽

Element Bearing

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On-Line Semi-Automatic Measurement of Individual Crystal Orientations in Heavily Deformed Materials in the TEM

Microscopy and Microanalysis ◽

10.1017/s1431927600014331 ◽

1999 ◽

Vol 5 (S2) ◽

pp. 202-203

Author(s):

S. Zaefferer

Keyword(s):

Spatial Resolution ◽

Automatic Measurement ◽

Bragg Diffraction ◽

Kikuchi Pattern ◽

Individual Crystal ◽

Crystal Orientations ◽

Diffraction Geometry ◽

On Line ◽

The Subject ◽

Ebsd Technique

The measurement of individual crystal orientations in heavily deformed materials is of great importance especially for the study of recrystallization mechanisms. The electron backscattering diffraction (EBSD) technique which is frequently used nowadays in the SEM for these kind of studies has three important drawbacks: first, its spatial resolution is limited to about 0.5 μm, second, the sample deformation is limited to only about 60 %, and third, the dislocation microstructure cannot be observed. All these problems can be overcome using a micro beam diffraction technique in the TEM. Two techniques can be distinguished, the Kikuchi pattern technique and the spot pattern technique. With a spatial resolution of down to about 10 nm they arc well suited for orientation measurements in highly deformed material. Nevertheless, since spot patterns are less sensible to deformation the spot technique is the ultimate choice in the case a most highly deformed material. An automatic procedure for the evaluation of spot patterns has been developed and, together with the Kikuchi technique, implemented in a computer program for the on-line analysis of crystal orientations at the TEM. The new procedure and its applications to highly deformed materials is the subject of this presentation. Spot patterns are less sensitive to the sample deformation than Kikuchi patterns due to the differences in the diffraction geometry and due to the relaxation of the Bragg diffraction conditions for spot patterns.

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Experiences with automatic N and P measurements of an activated sludge process in a research environment

Water Science & Technology ◽

10.2166/wst.1996.0016 ◽

1996 ◽

Vol 33 (1) ◽

pp. 165-173 ◽

Cited By ~ 3

Author(s):

S. Isaacs ◽

H. Temmink

Keyword(s):

Activated Sludge ◽

Batch Reactor ◽

Cross Flow ◽

Automatic Measurement ◽

Pilot Scale ◽

P Uptake ◽

Phosphate Removal ◽

Cross Flow Filtration ◽

On Line ◽

Flow Filtration

Some of the advantages of on-line automatic measurement of ammonia, nitrate and phosphate for studying activated sludge systems are pointed out with the help of examples of batch experiments. Sample taking is performed by cross-flow filtration and measurement of all three analytes is performed by Flow Injection Analysis (FIA). Two batch set-ups are described. In the first, one of the two 800 1 nitrifying/denitrifying tanks of a pilot-scale alternating process is employed as batch reactor, which has the advantage of a high measurement frequency and little preparatory and clean-up effort. The second consists of four 5 1 jars connected to the FIA system and allows on-line measurement of ammonia, nitrate and phosphate while performing batch reactions in parallel. Each of the four examples described was designed to study a particular aspect pertaining to Enhanced Biological Phosphate Removal (EBPR): the effect of acetate addition on aerobic P-uptake; the recovery of aerobic P-uptake after a disturbance; the interaction between denitrification and P-release when acetate is added at various rates; and the effect of stored PHB levels on denitrification by phosphate accumulating organisms.

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Capacitance Automatic Measurement Method of the Thickness of Liquid Film on Plat Form

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.381-382.157 ◽

2008 ◽

Vol 381-382 ◽

pp. 157-160

Author(s):

Shu Xing Xu ◽

B. Wang ◽

Yi Zhong Zheng

Keyword(s):

Real Time ◽

Virtual Instrument ◽

Measurement Method ◽

Low Cost ◽

Measurement Theory ◽

Water Film ◽

Automatic Measurement ◽

Time Data ◽

Line Measurement ◽

On Line

The thickness of water film is an important parameter in the field of chemical industry. Water film is formed by the flowing water, which flows through a narrow channel. So it is difficult to use contact gauges to measure the water film because it’s flowing so fast that if it is touched, the thickness will be changed. A low-cost and high precision non-contact measurement method—capacitive sensor is used as the sensor of the thickness of water film, virtual instrument is used to analyze the measurement state. In contrast to the conventional stand-alone instruments, a PC based virtual instrument for the measurement of water film is proposed in this paper. Based on on-line measurement theory, real time voltages should be collected to PC. These voltages will be computed by formulas in Labview and the real time data of thickness will be plotted on the screen. If bad signal got, it will give error alarm. The method of the measurement of water film can save a lot of fees of research and applications, and be easy to apply in other measurement and control fields. The basic principle and working process of capacitive micrometer, denoise method, the method of capacitive calibration, virtual instrument data acquisition system and on-line measurement of water film, will be further discussed in this paper.

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