High Precision Optical Sensors for Real-Time On-line Measurement of Straightness and Angular Errors for Smart Manufacturing

Smart Science ◽  
2016 ◽  
Vol 4 (3) ◽  
pp. 134-141 ◽  
Author(s):  
Hau-Wei Lee ◽  
Chien-Hung Liu
Keyword(s):  
Real Time ◽  
High Precision ◽  
Optical Sensors ◽  
Smart Manufacturing ◽  
Line Measurement ◽  
On Line

Implementation for High-Precision and Non-Contact System for the Measurement of Crankshaft and Camshaft

2011 ◽  
Vol 301-303 ◽  
pp. 959-964 ◽  
Author(s):  
Da Lin Cheng ◽  
Yi Wang ◽  
Yong Jie Ren ◽  
Xue You Yang
Keyword(s):  
Standard Deviation ◽  
High Precision ◽  
Measurement System ◽  
General Structure ◽  
Contact System ◽  
Scanning Laser ◽  
Test Results ◽  
Line Measurement ◽  
On Line ◽  
High Depth

A novel crankshaft and camshaft measurement system by optoelectronic scanning of which a flat-crystal was used to generate high depth of parallelism scanning laser was implemented. The general structure and principle were given. Mass of test results showed that the system could achieve high precision. The ranges could achieve ±8μm, standard deviation could achieve 3μm, and easy to operate, work reliably, automatically and on line measurement could be implemented.

scholarly journals Estimation of Secondary Soil Properties by Fusion of Laboratory and On-Line Measured Vis–NIR Spectra

2019 ◽  
Vol 11 (23) ◽  
pp. 2819 ◽  
Author(s):  
Muhammad Abdul Munnaf ◽  
Said Nawar ◽  
Abdul Mounem Mouazen
Keyword(s):  
Soil Properties ◽  
Real Time ◽  
Measurement Accuracy ◽  
Near Infrared ◽  
Diffuse Reflectance Spectroscopy ◽  
Spectral Response ◽  
Nir Spectroscopy ◽  
Accurate Estimation ◽  
Line Measurement ◽  
On Line

Visible and near infrared (vis–NIR) diffuse reflectance spectroscopy has made invaluable contributions to the accurate estimation of soil properties having direct and indirect spectral responses in NIR spectroscopy with measurements made in laboratory, in situ or using on-line (while the sensor is moving) platforms. Measurement accuracies vary with measurement type, for example, accuracy is higher for laboratory than on-line modes. On-line measurement accuracy deteriorates further for secondary (having indirect spectral response) soil properties. Therefore, the aim of this study is to improve on-line measurement accuracy of secondary properties by fusion of laboratory and on-line scanned spectra. Six arable fields were scanned using an on-line sensing platform coupled with a vis–NIR spectrophotometer (CompactSpec by Tec5 Technology for spectroscopy, Germany), with a spectral range of 305–1700 nm. A total of 138 soil samples were collected and used to develop five calibration models: (i) standard, using 100 laboratory scanned samples; (ii) hybrid-1, using 75 laboratory and 25 on-line samples; (iii) hybrid-2, using 50 laboratory and 50 on-line samples; (iv) hybrid-3, using 25 laboratory and 75 on-line samples, and (v) real-time using 100 on-line samples. Partial least squares regression (PLSR) models were developed for soil pH, available potassium (K), magnesium (Mg), calcium (Ca), and sodium (Na) and quality of models were validated using an independent prediction dataset (38 samples). Validation results showed that the standard models with laboratory scanned spectra provided poor to moderate accuracy for on-line prediction, and the hybrid-3 and real-time models provided the best prediction results, although hybrid-2 model with 50% on-line spectra provided equally good results for all properties except for pH and Na. These results suggest that either the real-time model with exclusively on-line spectra or the hybrid model with fusion up to 50% (except for pH and Na) and 75% on-line scanned spectra allows significant improvement of on-line prediction accuracy for secondary soil properties using vis–NIR spectroscopy.

The Research and Realization of Capacitive Current on Line Measurement Based on DSP

2012 ◽  
Vol 195-196 ◽  
pp. 195-199
Author(s):  
Jian Wen Wang ◽  
Zheng Feng Wang ◽  
Peng Li
Keyword(s):  
Measurement Error ◽  
Real Time ◽  
Measurement Methods ◽  
Current Measurement ◽  
Capacitive Current ◽  
Line Measurement ◽  
On Line ◽  
Capacitance Current ◽  
Signal Method

In the paper, it proceeds in-depth research and analysis to the existing capacitance current measurement methods, and the infuse signal method is chosen to achieve capacitance current accurate measurement on this basis. The method has the advantage of measurement error small, real-time good and safe reliable.

Research on the Measurement System of Large Dimension Workpieces Based on the Technology of CCD and Laser

2010 ◽  
Vol 37-38 ◽  
pp. 1101-1104
Author(s):  
Xiu Min Yang ◽  
Yan Wang ◽  
Wei Lun Zhao ◽  
Lei Zhang
Keyword(s):  
High Precision ◽  
Large Dimension ◽  
Measure Data ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Ccd Sensor ◽  
Line Measurement ◽  
On Line ◽  
Geometry Error ◽  
Control Apparatus

A kind of the measurement technique of the dimension and the geometry error of large dimension workpiece with two light routes and two CCD sensors has been made. The mathematical models of the dimension and the geometry error based on the technology of CCD and laser are established. The application property parameter to measure workpiece dimension and geometry error and the design characteristic related supplemental hardware of CCD sensor are studied. An on-line data collection system based on laser and liner array CCD is developed. This systematic C8051 single-chip microcomputer as controler that adopt American CYGNAL company's production carry out handling and the collection of data. the system meets the measurement requirement of no-touch, on line and high precision with adopting of machine, laser and electricity comprehensive technology. The result can be got in this paper: the CCD sensor can meet the need of measuring dimension and geometry error of big workpiece and is no-touch, on line measurement and high precision. The on line collecting data system can achieve the expecting function, and measure data on line, and it also can easily connect with auto control apparatus.

scholarly journals Microwave sensor technologies for food evaluation and analysis: Methods, challenges and solutions

2017 ◽  
Vol 40 (12) ◽  
pp. 3433-3448 ◽  
Author(s):  
Zhaozong Meng ◽  
Zhipeng Wu ◽  
John Gray
Keyword(s):  
Integrated Circuits ◽  
Information And Communication Technologies ◽  
Emerging Technologies ◽  
Wide Band ◽  
Sensor Technology ◽  
Smart Manufacturing ◽  
Comprehensive Overview ◽  
Line Measurement ◽  
Microwave Sensor ◽  
On Line

Microwave sensor technology is widely accepted as a non-destructive and hygienic means for food evaluation and analysis. However, its applications concentrate on in-lab investigations, which are not widely applied for on-line measurement in food industry. Motivated by the rapid progress of microwave technologies and the lack of on-line measurement systems in industry, this paper aims to provide a comprehensive overview of microwave sensors for food measurement, define the technological gap, and suggest the potential solutions. With a brief introduction to the fundamentals, classification and analysis of the traditional methods and technologies are presented, followed by a discussion of calibration and decision-making methods. Based on the analysis of the cutting-edge microwave sensing technologies, the limitations and challenges facing the present studies are identified. Then, focusing on some new emerging technologies including Monolithic Microwave Integrated Circuits, antenna array and System on Chip Ultra-Wide Band pulse-based time domain systems, the feasibility and prospective of potential solutions in this particular area are suggested. In addition, integration of emerging Information and Communication Technologies (ICT) and new design concepts of the sensor system concerning the practical use for smart manufacturing are also illustrated. The potentiality of the suggested new emerging technologies and integration of ICT to satisfy future digitised industry will be inspirational and of interest to researchers of both microwave engineering and food sectors.

A real-time on-line measurement of iodine flow rate based on absorption spectroscopy

2009 ◽  
Vol 138 (2) ◽  
pp. 428-431 ◽  
Author(s):  
Guofu Li ◽  
Haiyun Yu ◽  
Liping Duo ◽  
Jian Wang ◽  
Yuqi Jin ◽  
...  
Keyword(s):  
Real Time ◽  
Absorption Spectroscopy ◽  
Flow Rate ◽  
Line Measurement ◽  
On Line

Способ обработки результатов магнитной дефектоскопии для достоверного обнаружения опасных дефектов сплошности в реальном времени

2020 ◽  
pp. 58-64
Author(s):  
А.Н. Печенков
Keyword(s):  
Magnetic Field ◽  
Inverse Problem ◽  
Inverse Problems ◽  
Computer Program ◽  
Real Time ◽  
High Precision ◽  
Computational Method ◽  
On Line ◽  
Definition Of ◽  
Minimization Of Functional

The inverse problems of magnetostatics for defects of a continuum can be formulated in various ways. It is possible to set a task of definition of defects with high precision and permission,or it is possible to limit the task to detection of several types of defects («dangerous» defects) with good probability. At the same time «small» defects will be passed by the computer program. The problem of minimization of functional for both experimental and computational magnetic field differences is the main problem for the solution of any inverse problem, both in on – line (real time), and in off - line modes. Computational method of calculations in real time of the simplified inverse problem, without accumulation of experimental databases is considered.

High Precision Double-Interferometry for Large Step-Height On-Line Measurement Using Waveform Transforming Technology

2014 ◽  
Vol 609-610 ◽  
pp. 1122-1130
Author(s):  
Sen Ma ◽  
Fang Xie ◽  
Yun Zhi Wang ◽  
Liang Chen
Keyword(s):  
High Precision ◽  
Feedback Loop ◽  
Step Height ◽  
Peak Point ◽  
Large Step ◽  
Line Measurement ◽  
High Measurement ◽  
On Line ◽  
The One ◽  
Value Of It

This paper focuses on obtaining high measurement precision for large step-height by double-interferometry using waveform transforming technology. The interferometer performing the measurement, which is stabilized by a feedback loop and is robust enough for on-line measurement, works simultaneously in both modes of single-wavelength interferometry (SWI) and two-wavelength interferoemetry (TWI). In order to make the peak point of the TWI signal prominent and unique, the cosine-amplitude-modulated TWI signal has been transformed to be a triangular signal with the same frequency as the cosine-amplitude modulating and being in phase with it. The positions of the one-to-one corresponding peaks of the TWI signal and the triangular signal are the same. As the peak point of the triangular signal can be addressed much more precisely than that of the TWI signal, by employing the shifting range of the peak of the triangular signal instead of that of the TWI signal to determine the amplitude of the step height while using the SWI signal to measure the value of it, the system could measure the height with high precision. The standard deviation of measuring a gauge block with the height of 0.5mm is 0.8nm.

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