The research on video signal electromagnetic radiation of computer based on near-field testing data

2003 ◽  
Author(s):  
Zhang Hong-xin ◽  
Lu Ying-hua ◽  
Qiu Yu-chun ◽  
Si Yu ◽  
Zhao Li-ang
Keyword(s):  
Electromagnetic Radiation ◽  
Near Field ◽  
Field Testing ◽  
Video Signal ◽  
Testing Data ◽  
Computer Based

The Challenges of Wide Ranging Viscosity Fluids on Liquid Ultrasonic Flowmeters

2006 ◽  
Author(s):  
Jeffrey L. Walters
Keyword(s):  
Elevated Temperature ◽  
Temperature Effects ◽  
Flow Measurement ◽  
Field Testing ◽  
Signal Propagation ◽  
Oil Fields ◽  
Flow Profile ◽  
Fluid Temperature ◽  
Testing Data ◽  
Novel Approaches

Wide ranging viscosities in ultrasonic flow measurement for liquids is a common pipeline scenario. With ever maturing oil fields and the growth in oilsands production, the trend appears to be towards the higher end viscosities and/or novel approaches towards reducing the viscosities for transportation such as heating. The variable viscosities of the fluids provide some unique challenges to ultrasonic flowmeters not only in terms of flow profile modeling, but also in acoustic signal propagation and application to elevated temperature fluids which likewise affect the accuracy or performance of the measurement. The flow profile interrogation techniques will be discussed with an emphasis on a distributed chord model together with the use of a waveguide technology that minimizes acoustic and fluid temperature effects. A combination of R&D, calibration and field testing data will both demonstrate these challenges as well as show the increased performance that results from the application of these approaches.

Estimating concrete strength using field testing data

2014 ◽  
pp. 524-529
Author(s):  
A Colombo ◽  
L Meneghetti ◽  
R Teixeira ◽  
T Bittencourt
Keyword(s):  
Concrete Strength ◽  
Field Testing ◽  
Testing Data

Near field testing on ACTS breadboard multibeam antenna (MBA)

2003 ◽  
Author(s):  
C.H. Chen ◽  
W.C. Wong ◽  
S.J. Hamada
Keyword(s):  
Near Field ◽  
Field Testing ◽  
Multibeam Antenna

scholarly journals Near-Field Immunity Test Method for Fast Radiated Immunity Test Debugging of Automotive Electronics

Electronics ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 797 ◽  
Author(s):  
Jawad Yousaf ◽  
Doojin Lee ◽  
JunHee Han ◽  
Hosang Lee ◽  
Muhammad Faisal ◽  
...  
Keyword(s):  
Automotive Industry ◽  
Near Field ◽  
Cost Effective ◽  
Field Testing ◽  
Input Power ◽  
Test Method ◽  
Automotive Electronics ◽  
Test Results ◽  
Electric Power Steering ◽  
Power Steering

This study presents a near-field immunity test (NFIT) method for the fast debugging of radiated susceptibility of industrial devices. The proposed approach is based on the development of an NFIT setup which comprises of developed near-field electric and magnetic field probes and device under test (DUT). The developed small-size and handy near-field testing probes inject the high electric (up to 1000 V/m) and magnetic (up to 2.4 A/m) fields on the DUT in the radar pulse ranges (1.2 to 1.4 GHz and 2.7 to 3.1 GHz) with the lower fed input power (up to 15 W) from the power amplifier in the developed NFIT setup. The proof of concept is validated with the successful near-field immunity debugging of an electric power steering (EPS) device used in the automotive industry with the developed NFIT setup. The radiated susceptibility debugging test results of developed NFIT method and conventional method of ISO 11452-2 test setup turned out to be close to each other for the tested DUT in immunity performance. The proposed procedure has advantages of industry usefulness with fast, handy, and cost-effective radiated immunity debugging of the DUT without the requirement of large antenna, high-power amplifiers, optical DUT connecting harness, and an anechoic chamber as needed in ISO 11452-2 standard setup for the debugging analysis.

A three-axis antenna to measure near-field low-frequency electromagnetic radiation generated from rock fracture

Measurement ◽  
2020 ◽  
pp. 108563
Author(s):  
Menghan Wei ◽  
Dazhao Song ◽  
Xueqiu He ◽  
Majid Khan ◽  
Zhenlei Li ◽  
...  
Keyword(s):  
Electromagnetic Radiation ◽  
Rock Fracture ◽  
Near Field ◽  
Low Frequency

Modeling of the near-field electromagnetic radiation of power cables in automotives or aeronautics

2013 ◽  
Vol 28 (10) ◽  
pp. 4580-4593 ◽  
Author(s):  
F. Costa ◽  
C. Gautier ◽  
B. Revol ◽  
J. Genoulaz ◽  
Bernard Demoulin
Keyword(s):  
Electromagnetic Radiation ◽  
Near Field ◽  
Power Cables
Sign in / Sign up

Export Citation Format

Share Document