High-accuracy online calibration system for electronic voltage transformers with digital output

In this work, a new and low-cost Arduino-Based Data Acquisition System (ABDAS) for use in an aerodynamics lab is developed. Its design is simple and reliable. The accuracy of the system has been checked by being directly compared with a commercial and high accuracy level hardware from National Instruments. Furthermore, ABDAS has been compared to the accredited calibration system in the IDR/UPM Institute, its measurements during this testing campaign being used to analyzed two different cup anemometer frequency determination procedures: counting pulses and the Fourier transform. The results indicate a more accurate transfer function of the cup anemometers when counting pulses procedure is used.

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Instability Factor Analysis of the Vision-based Online Calibration System For Linear Measuring Tools

2019 IEEE 2nd International Conference on Computer and Communication Engineering Technology (CCET) ◽

10.1109/ccet48361.2019.8989390 ◽

2019 ◽

Author(s):

Yingsong Chen ◽

Huijie Zhang ◽

Yufang Yin ◽

Lihong Wu

Keyword(s):

Factor Analysis ◽

Calibration System ◽

Online Calibration ◽

Linear Measuring ◽

Instability Factor

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Design and Evaluation of a High-Accuracy Measurement System for Sheet Resistance of Thin Films

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.609-610.106 ◽

2014 ◽

Vol 609-610 ◽

pp. 106-112 ◽

Cited By ~ 1

Author(s):

Hai Bin Pan ◽

Jian Ning Ding ◽

Bao Guo Cao ◽

Guang Gui Cheng

Keyword(s):

Thin Films ◽

Sheet Resistance ◽

Measurement System ◽

High Accuracy ◽

Voltage Measurement ◽

Switching Circuit ◽

Digital Output ◽

Accuracy Measurement ◽

Output Module ◽

High Accuracy Measurement

Inspection and measurement for the sheet resistance and resistivity play a pivotal role in the semiconductor industry. In this study, a high-accuracy measurement system for sheet resistance of thin films was designed based on dual-measurement with four-point probe method. The measurement system was composed of a special switching circuit, a digital output module, Keithley 2400 SourceMeter, and a computer running LabVIEW. The special switching circuit designed based on the multiplexer played an important role in current probes and voltage probes automatic switching under the control of virtual instrumentation software LabVIEW and National instruments digital output module hardware NI 9401. Keithley 2400 SourceMeter controlled by LabVIEW was used for two-times high-precision voltage measurement. Van der Pauw correction factor were calculated based on the results of the two-times voltage measurement. Then the sheet resistance of thin films was calculated by LabVIEW softwares powerful computing. The experimental results show that the designed and developed system can meet the needs of fast on-line measurement of thin films sheet resistance with a wide range, and moreover, the accuracy of measurements and the level of automatization have been dramatically improved compared to the conventional measurement system.

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A high-accuracy 10 Hz-1 MHz automatic AC voltage calibration system

IEEE Transactions on Instrumentation and Measurement ◽

10.1109/tim.1987.6312575 ◽

1987 ◽

Vol IM-36 (4) ◽

pp. 883-887 ◽

Cited By ~ 16

Author(s):

Nile M. Oldham ◽

M. E. Parker ◽

Albert M. Young ◽

Alan G. Smith

Keyword(s):

High Accuracy ◽

Calibration System

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Study on Electronic Controlled Diesel Engine Calibration System Based on CAN-Bus

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.490-491.881 ◽

2014 ◽

Vol 490-491 ◽

pp. 881-885

Author(s):

Jie Hui Li ◽

Lu Yun Zhang ◽

Tie Nan Huang ◽

Qing Yu

Keyword(s):

Diesel Engine ◽

Data Transfer ◽

Can Bus ◽

Electronic Control ◽

Calibration System ◽

Engine Operation ◽

Operation Optimization ◽

Online Calibration ◽

Electric Control ◽

Electronic Control System

To meet the requirement of electric control diesel engine operation optimization, an online calibration system of diesel engine is designed based on the principle and the way to communicate of CAN-Bus. This Calibration system found communication accurate and quick, which researching of software is based on Windows platform, VC++6.0 software and modularization designed [1]. At last electronic control system simulation platform experiments demonstrate that data transfer function is reliable and steady and bench tests testify that the calibration system can calibrate diesel engine practical.

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Progress on vacuum-to-air mass calibration system using magnetic suspension to disseminate the Planck-constant realized kilogram

ACTA IMEKO ◽

10.21014/acta_imeko.v6i2.406 ◽

2017 ◽

Vol 6 (2) ◽

pp. 70 ◽

Cited By ~ 2

Author(s):

Eric Carl Benck ◽

Corey Stambaugh ◽

Edward Mulhern ◽

Patrick Abbott ◽

Zeina Kubarych

Keyword(s):

International System ◽

High Accuracy ◽

Magnetic Suspension ◽

Calibration System ◽

Font Size ◽

Planck Constant ◽

Air Mass ◽

System Of Units ◽

Mass Calibration ◽

Definition Of

The kilogram is the unit of mass in the International System of units (SI) and has been defined as the mass of the International Prototype Kilogram (IPK) since 1889. In the future, a new definition of the kilogram will be realized by fixing the value of the Planck constant. The new definition of the unit of mass will occur in a vacuum environment by necessity, so the National Institute of Standards and Technology (NIST) is developing a mass calibration system in which a kilogram artefact in air can be directly compared with a kilogram realized in a vacuum environment. This apparatus uses magnetic suspension to couple the kilogram in air to a high accuracy mass balance in vacuum.

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