Simulation results of the online tritiated water measurement system

2021 ◽  
Vol 32 (11) ◽  
Author(s):  
Rui-Yang Xu ◽  
Chun-Hui Dong ◽  
Xiao-Qing Mao ◽  
Qing-Xian Zhang ◽  
Hui Gong ◽  
...  
Keyword(s):  
Measurement System ◽  
Tritiated Water ◽  
Simulation Results ◽  
Water Measurement

A new low-level tritiated water measurement system using CaF2(Eu) powders

2019 ◽  
Vol 14 (07) ◽  
pp. P07019-P07019 ◽  
Author(s):  
J. Wu ◽  
Z. Chen ◽  
H. Wang ◽  
Z. Chen ◽  
J. Li ◽  
...  
Keyword(s):  
Measurement System ◽  
Tritiated Water ◽  
Low Level ◽  
Water Measurement

scholarly journals Simulation Analysis of Magnetic Gradient Full-Tensor Measurement System

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Lei Xu ◽  
Ning Zhang ◽  
Liqing Fang ◽  
Huadong Chen ◽  
Pengfei Lin ◽  
...  
Keyword(s):  
Magnetic Dipole ◽  
Measurement System ◽  
Measurement Accuracy ◽  
Simulation Analysis ◽  
Magnetic Gradient ◽  
Measurement Systems ◽  
Magnetometer Array ◽  
Array Structure ◽  
Simulation Results ◽  
Planar Measurement

The magnetic gradient full-tensor measurement system is diverse, and the magnetometer array structure is complex. Aimed at the problem, seven magnetic gradient full-tensor measurement system models are studied in detail. The full-tensor measurement theories of the tensor measurement arrays are analyzed. Under the same baseline distance, the magnetic dipole model is used to simulate the measurement system. Based on different measurement systems, the paper quantitatively compares and analyzes the error of the structure. A more optimized magnetic gradient full-tensor measurement system is suggested. The simulation results show that the measurement accuracy of the planar measurement system is slightly higher than that of the stereo measurement system. Among them, the cross-shaped and square measurement systems have relatively smaller structural errors and higher measurement accuracy.

Research on Environment Materials with NDIR NO2 Concentration Measurement by Soot Position Influence

2014 ◽  
Vol 540 ◽  
pp. 255-258
Author(s):  
Yan Jun Zhao ◽  
Cheng Bin Gao ◽  
Bin Qu
Keyword(s):  
Light Intensity ◽  
Measurement System ◽  
Solution Method ◽  
Daily Life ◽  
Measurement Methods ◽  
Concentration Measurement ◽  
Infrared Light ◽  
Gaseous Pollutants ◽  
Actual Concentration ◽  
Simulation Results

Environment materials play important role in our daily life. It includes so many types. NO2 is one of the most important gaseous pollutants and NO2 concentration measurement system is one part of the CEMS system. There have many NO2 concentration measurement methods and NDIR is used commonly. The received angle of the measurement light is gradually decreases while the distance between soot and the receiver becomes larger; so the true infrared light intensity is smaller than the theoretical infrared light intensity and NO2 concentration is less than the actual concentration. To reduce the soot position influence, soot position influence on NO2 concentration measurement using NDIR is studied. The influence of the different soot position is analyzed. The simulation results show that the different soot position can influent the NO2 concentration accuracy. The solution method on decreasing the soot poison influence is brought out and can improve the NO2 concentration accuracy.

Suitability of a simple sampler using a brass bar for gaseous tritiated water measurement

2021 ◽  
Vol 172 ◽  
pp. 112743
Author(s):  
Masato Nakayama ◽  
Masanori Hara ◽  
Fumihiko Kobayashi ◽  
Sachiko Oyama ◽  
Masashi Ota ◽  
...  
Keyword(s):  
Tritiated Water ◽  
Water Measurement

A Calibration Approach for Installation Error of Multi-Axis Laser Interferometer

2017 ◽  
Author(s):  
Shengwu Du ◽  
Jinchun Hu ◽  
Yu Zhu ◽  
Chang Tian ◽  
Ming Zhang
Keyword(s):  
Laser Beam ◽  
Computational Model ◽  
Measurement System ◽  
Laser Interferometer ◽  
Measurement Information ◽  
Error Source ◽  
Reference Axis ◽  
Ultra Precision ◽  
Simulation Results ◽  
Calibration Approach

Multi-axis laser interferometer is generally employed in measuring multi-degree-of-freedom (M-DOF) displacement for many ultra-precision X-Y stages. In multi-axis measurement system, the installation deviation of interferometer laser beam is an important error source. In this paper, a novel calibration approach without other higher precision sensors has been presented, to calibrate the installation deviation in a 3-DOF displacement measurement system, with potential capability of calibrating 6-DOF measurement system. In the proposed method, one redundant measuring axis that is set as installation reference axis is added to the original 3-axis measurement system. Correspondingly, considering the installation deviations of 3-axis interferometer, a new displacement computational model with four equations is built. In this model, all installation deviations are constants and the displacement values are variable. Utilizing the redundant measurement information of three position points, the installation deviations are separated. The simulation results validate its feasibility. This approach can strictly ensure the parallelism and perpendicularity between measuring axes, and is easily applied to engineering.

scholarly journals Frequency Monitoring and Control during Power System Restoration Based on Wide Area Measurement System

2011 ◽  
Vol 2011 ◽  
pp. 1-13 ◽  
Author(s):  
Saber Nourizadeh ◽  
Vahid Yari ◽  
Ali Mohammad Ranjbar
Keyword(s):  
Power System ◽  
Measurement System ◽  
Frequency Control ◽  
Area Measurement ◽  
Wide Area ◽  
Load Modeling ◽  
Wide Area Measurement System ◽  
Power System Restoration ◽  
System Restoration ◽  
Simulation Results

Frequency control during power system restoration has not been strongly addressed. Operators are often concerned with the offline sizing of load and generation steps, but, nowadays, the introduction of Wide Area Measurement System (WAMS) makes it possible to monitor the stability of power system online. The constraints of WAMS operation result in some changes in power system frequency control. This paper proposes a novel methodology for frequency control and monitoring during the early steps of power system restoration based on WAMS. Detailed load modeling is achieved based on the static load modeling approach. Power generators' modeling is also accomplished utilizing the single machine equivalent of the power system based on PMU measurements. Simulation results of the presented methodology on the 39 bus New England power system clearly show the effectiveness and applicability of the proposed method. The simulation results show that the presented approach has a completely acceptable precision and an outstanding speed with less than 0.05% error. The outstanding speed of the presented approach along with the result precision will result in a great promotion in power system restoration methodologies.

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