System for Data Acquisition from High Voltage Terminals

1972 ◽  
Vol 43 (2) ◽  
pp. 230-232 ◽  
Author(s):  
George W. York ◽  
John T. Park ◽  
James J. Miskinis ◽  
David H. Crandall ◽  
Victor Pol
Keyword(s):  
Data Acquisition ◽  
High Voltage

A Preliminary Study on CSAMT Anti-Jamming Transmitter System

2014 ◽  
Vol 962-965 ◽  
pp. 317-321
Author(s):  
Dang Li ◽  
Jun Lu Wang ◽  
Yong Li ◽  
Jian Hua Li ◽  
Pin Rong Lin
Keyword(s):  
Data Acquisition ◽  
High Voltage ◽  
High Speed ◽  
Low Voltage ◽  
Host Computer ◽  
Good Prospect ◽  
Interference Signal ◽  
Computer Data ◽  
Random Code ◽  
Data Acquisition Card

On the basis of the relevant identification theory of pseudo-random code signal, the signals of CSAMT are divided into three parts according to the frequency of the signal. The signals which are susceptible to 50Hz interference signal and its harmonic components should be set by pseudo-random code way. Others are set by single square waveform way. The Control and signal generation software of the transmitter system is built on the advanced virtual instrument platform, LabVIEW. The hardware of the transmitter system is mainly composed of host computer, data acquisition card, high-speed optocoupler, IGBT driver module and four IGBT switches. The data acquisition card generate PWM signals, the high-speed optocoupler isolates low-voltage part and high-voltage part. IGBT drive module and four IGBT switches constitute high-voltage part. Entire transmitter system is suitable for different environments and research tasks, the transmit frequency are adjustable, and the pseudo-random code signal has strong capability to suppress the interference signals. The control software on host computer is simple and clear. There is good prospect for the use.

Real-Time Central Data Acquisition and Analysis System for High-Voltage Transients

1975 ◽  
Vol 24 (4) ◽  
pp. 379-384 ◽  
Author(s):  
Toshio Miyamoto ◽  
Toshiji Takami ◽  
Toshihide Tanaka ◽  
Ikuko Sakaguchi ◽  
Fusako Kawaguchi
Keyword(s):  
Data Acquisition ◽  
Real Time ◽  
High Voltage ◽  
Voltage Transients ◽  
Analysis System ◽  
Central Data

The Study on Intelligent Insecticidal Lamp with LED

2014 ◽  
Vol 571-572 ◽  
pp. 985-989
Author(s):  
Xiao Dong Zhang ◽  
Li Feng Xing
Keyword(s):  
Data Acquisition ◽  
High Voltage ◽  
Power Supply ◽  
Power Grid ◽  
Solar Battery

Intelligent insecticidal lamp with LED is more efficient than ordinary insecticidal lamp. It used solar battery as the power supply, used high voltage power grid as hunting tools, used power LED which was controlled by singlechip as trapping tools for killing more insects. It could work at the night in spring or summer by data acquisition of clock chip and sensors and could automatically shut down in the rainy day or foggy day.

A Multiplex Data Acquisition System Applied in High Voltage Transmission Line Based on Electronic Transformers

2012 ◽  
Vol 260-261 ◽  
pp. 426-431
Author(s):  
Tao Song
Keyword(s):  
Transmission Line ◽  
Data Acquisition ◽  
High Voltage ◽  
High Speed ◽  
Data Acquisition System ◽  
Current Measurement ◽  
Acquisition System ◽  
Voltage Measurement ◽  
High Voltage Transmission Line ◽  
High Voltage Transmission

A multiplex data acquisition system applied in high voltage transmission line based on electronic combined transformers is proposed in the paper. Employing an air-core coil for current measurement and current protection and a SF6 coaxial capacitance for voltage measurement, this paper proposes a method to acquisition signal based on the MSP430F1611 MCU and ADC AD7685. The data acquisition system can collect three channel analog signals (current measurement, current protection, voltage measurement) at the same time, and then pack the data, send them to the merging unit through the optical fiber. The multiplex data acquisition system is at the ground potential, so the optical power source could be abandoned and the reliability is effectively enhanced. The technology of multi-channel acquisition, high-speed communications, anti-electromagnetic interference are mainly introduced. Tests have been done and the experimental results show that this ECT meets the requirement of the 0.2s class for measurement and 5PTE for protection in IEC60044-8, voltage channel meets the requirement of the 0.2 level in IEC60044-7.

scholarly journals Design and Development of CRIO based Data Acquisition and Control system for High Voltage Bushing Experiment

2017 ◽  
Vol 823 ◽  
pp. 012047
Author(s):  
Himanshu Tyagi ◽  
Sejal Shah ◽  
Ratnakar Yadav ◽  
Kartik Patel ◽  
Hiren Mistri ◽  
...  
Keyword(s):  
Control System ◽  
Data Acquisition ◽  
High Voltage ◽  
Design And Development ◽  
And Control

High Voltage Electron Microscopy of Ion-Milled Dental Enamel

1974 ◽  
Vol 32 ◽  
pp. 60-61
Author(s):  
L. D. Ackerman ◽  
S. H. Y. Wei
Keyword(s):  
Electron Microscopy ◽  
High Voltage ◽  
Third Molar ◽  
Polarized Light ◽  
Dental Enamel ◽  
Longitudinal Section ◽  
Ion Milling ◽  
High Voltage Electron Microscopy ◽  
Voltage Electron ◽  
High Voltage Electron

Mature human dental enamel has presented investigators with several difficulties in ultramicrotomy of specimens for electron microscopy due to its high degree of mineralization. This study explores the possibility of combining ion-milling and high voltage electron microscopy as a means of circumventing the problems of ultramicrotomy.A longitudinal section of an extracted human third molar was ground to a thickness of about 30 um and polarized light micrographs were taken. The specimen was attached to a single hole grid and thinned by argon-ion bombardment at 15° incidence while rotating at 15 rpm. The beam current in each of two guns was 50 μA with an accelerating voltage of 4 kV. A 20 nm carbon coating was evaporated onto the specimen to prevent an electron charge from building up during electron microscopy.

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