A Counting-Campbelling Neutron Measurement System and Its Experimental Results by Test Reactor

1982 ◽  
Vol 29 (1) ◽  
pp. 714-717 ◽  
Author(s):  
Y. Endo ◽  
T. Ito ◽  
E. Seki
Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 673
Author(s):  
Augustyn Wójcik ◽  
Piotr Bilski ◽  
Robert Łukaszewski ◽  
Krzysztof Dowalla ◽  
Ryszard Kowalik

The paper presents the novel HF-GEN method for determining the characteristics of Electrical Appliance (EA) operating in the end-user environment. The method includes a measurement system that uses a pulse signal generator to improve the quality of EA identification. Its structure and the principles of operation are presented. A method for determining the characteristics of the current signals’ transients using the cross-correlation is described. Its result is the appliance signature with a set of features characterizing its state of operation. The quality of the obtained signature is evaluated in the standard classification task with the aim of identifying the particular appliance’s state based on the analysis of features by three independent algorithms. Experimental results for 15 EAs categories show the usefulness of the proposed approach.


2013 ◽  
Vol 63 (11) ◽  
pp. 2080-2084 ◽  
Author(s):  
Hee Seo ◽  
Se-Hwan Park ◽  
Byung-Hee Won ◽  
Seong-Kyu Ahn ◽  
Hee-Sung Shin ◽  
...  

2005 ◽  
Vol 295-296 ◽  
pp. 381-386 ◽  
Author(s):  
Liang Chia Chen ◽  
J.Y. Sun ◽  
Tsing Tshih Tsung ◽  
H. Chang ◽  
Hong Ming Lin

This article presents the development of an automatic on-line measurement system for characterizing a nanoparticle manufacturing process known as Arc Spray Nanoparticle Synthesis System (ASNSS). The ASNSS has been developed to generate metal nanoparticles and to explore the optimum system parameters for producing the desired nanopowders. Preliminary experimental results indicate that the size of nanoparticles, widely ranging from 10nm to 300nm, is significantly affected by the process parameters such as operating pressure, temperature, electrical current and type of dielectric liquid used. The on-line measurement system was developed to provide an effective multi-solution for characterizing the nanoparticle synthesis process and for monitoring the manufacturing quality of the ASNSS. Experiments were conducted to identify the optimum sampling period and volume of the particle suspension for accurate sampling and data acquisition. Experimental results revealed that a sampling duration of 20 minutes and a dielectric volume of 40 c.c. can achieve effective data representation while maximizing the sampling efficiency.


Electronics ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 451 ◽  
Author(s):  
Liuzheng Ma ◽  
Zhenfeng Li ◽  
Zephania Birech ◽  
Shixin Li ◽  
Yatao Yang ◽  
...  

To solve the problems that occur when farmers overuse chemical fertilizers, it is necessary to develop rapid and efficient portable measurement systems for the detection and quantification of nitrogen (N), phosphorus (P), and potassium (K) in soil. Challenges arise from the use of currently available portable instruments which only have a few channels, namely measurement and the reference channels. We report on a home-built, multichannel, optoelectronic measurement system with automatically switching light sources for the detection of N, P, K content in soil samples. This optoelectronic measurement system consists of joint LED light sources with peak emission wavelengths of 405 nm, 660 nm, and 515 nm, a photodiode array, a circuit board with a microcontroller unit (MCU), and a liquid-crystal display (LCD) touch screen. The straightforward principle for rapid detection of the extractable nutrients (N, P, K) was well-established, and characterization of the designed measurement system was done. Using this multi-channel measurement system, available nutrients extracted from six soil samples could be measured simultaneously. The absorbance compensation, concentration calibration, and nutrition measurements were performed automatically to achieve high consistency across six channels. The experimental results showed that the cumulative relative standard deviations of 1.22%, 1.27%, and 1.00% were obtained from six channels with known concentrations of standard solutions, respectively. The coefficients of correlation for the detection of extracted nutrients of N, P, K content in soil samples using both the proposed method and conventional lab-based method were 0.9010, 0.9471, and 0.8923, respectively. Experimental results show that this optoelectronic measurement system can perform the measurement of N, P, K contents of six soil samples simultaneously and may be used as an actual tool in determining nutrients in soil samples with an improvement in detection efficiency.


2020 ◽  
Vol 52 (5) ◽  
pp. 1022-1028
Author(s):  
Chaehun Lee ◽  
Hee Seo ◽  
Spencer H. Menlove ◽  
Howard O. Menlove

2014 ◽  
Vol 643 ◽  
pp. 196-200
Author(s):  
Feng Huang ◽  
Xin Bian ◽  
Guo Rong Cao

An intelligent measurement system is introduced, which is based on time-triggered embedded system with the characteristics of multitask and multiparameter in the process of measuring parameters. The system is consist of MCU, USB and the time-triggered structure. The predictability makes the system avoid the interrupt loss. The stability and reliability of the system has been improved. The experimental results show that the system not only has the characteristics of flexible measurement control, data transmission, and data storage, but also can analysis the field parameters.


1993 ◽  
Vol 11 (1-3) ◽  
pp. 425-430 ◽  
Author(s):  
Andrej Holobar ◽  
Bernhard H. Weigl ◽  
Wolfgang Trettnak ◽  
Roman Benes̆ ◽  
Hartmut Lehmann ◽  
...  

2021 ◽  
Author(s):  
Paolo Carbone

<div> <div> <div> <p>This paper describes the design and realization of a 5.6 GHz ultra–wide bandwidth based position measurement system. The system has been entirely made using off–the– shelf components and achieves centimeter level accuracy in an indoor environment. It is based on asynchronous modulated pulse round–trip–time measurements. Both system level and realization details are described along with experimental results including estimates of measurement uncertainties. </p> </div> </div> </div>


2010 ◽  
Vol 26-28 ◽  
pp. 1-4
Author(s):  
Guo Nian Yao ◽  
Jun Hu Wei ◽  
Hao Sun ◽  
Guo Ji Sun

In order to improve the measuring accuracy and efficiency of projectiles’ centroidal deviation, the working principle and the relevant calculation formulae based on three points method are described in detail, the main factors affecting precision are discussed and quantitative analysis on precision of the equipment is made. The measuring platform with automatic leveling and locating based on the arc locating and so on are put forward to reduce error. The experimental results show that the system can satisfy the requirement for measuring with high accuracy. The equipment plays a very important role in testing ordnance, especially for measuring regular projectiles.


2004 ◽  
Vol 126 (2) ◽  
pp. 265-275 ◽  
Author(s):  
Junmin Wang ◽  
Lee Alexander ◽  
Rajesh Rajamani

This paper develops a real-time tire-road friction coefficient measurement system that can reliably distinguish between different road surface friction levels and quickly detect abrupt changes in friction coefficient. The measurement system relies on the use of differential GPS and utilizes a nonlinear longitudinal tire force model. Compared to previously published results in literature, the advantage of the system developed in this paper is that it is applicable during both vehicle acceleration and braking and works reliably for a wide range of slip ratios, including high slip conditions. The system can be utilized on front/rear-wheel drive as well as all-wheel drive vehicles. Extensive results are presented from experimental results conducted on various surfaces with a winter maintenance vehicle called the “SAFEPLOW.” The experimental results show that the system performs reliably and quickly in estimating friction coefficient on different road surfaces during various vehicle maneuvers. The developed friction measurement system has many applications in vehicle safety systems such as ABS, skid control and collision avoidance systems and is also useful for winter maintenance vehicles in which knowledge of the friction coefficient can be used to determine the amount and type of deicing chemicals to be applied to a winter roadway.


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