Experimental results on an optical pH measurement system for bioreactors

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.

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Optical pH measurement system using a single fluorescent dye for assessing susceptibility to dental caries

Journal of Biomedical Optics ◽

10.1117/1.jbo.24.1.017001 ◽

2019 ◽

Vol 24 (01) ◽

pp. 1 ◽

Cited By ~ 3

Author(s):

Manuja Sharma ◽

Jasmine Y. Graham ◽

Philip A. Walczak ◽

Ryan Nguyen ◽

Lauren K. Lee ◽

...

Keyword(s):

Dental Caries ◽

Measurement System ◽

Fluorescent Dye ◽

Ph Measurement

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CMOS-based colour-change pH measurement system

Electronics Letters ◽

10.1049/el.2009.2038 ◽

2009 ◽

Vol 45 (22) ◽

pp. 1138 ◽

Cited By ~ 8

Author(s):

Z.H. Fu ◽

C.P. Joshi ◽

A.H. Titus

Keyword(s):

Measurement System ◽

Colour Change ◽

Ph Measurement

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

IEEE Transactions on Nuclear Science ◽

10.1109/tns.1982.4335943 ◽

1982 ◽

Vol 29 (1) ◽

pp. 714-717 ◽

Cited By ~ 21

Author(s):

Y. Endo ◽

T. Ito ◽

E. Seki

Keyword(s):

Measurement System ◽

Experimental Results ◽

Neutron Measurement ◽

Test Reactor

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Process Analysis and Characterization of ASNSS Using Automatic On-Line Measurement

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.295-296.381 ◽

2005 ◽

Vol 295-296 ◽

pp. 381-386 ◽

Cited By ~ 2

Author(s):

Liang Chia Chen ◽

J.Y. Sun ◽

Tsing Tshih Tsung ◽

H. Chang ◽

Hong Ming Lin

Keyword(s):

Measurement System ◽

Process Analysis ◽

Nanoparticle Synthesis ◽

Sampling Period ◽

Data Representation ◽

Experimental Results ◽

Synthesis Process ◽

Operating Pressure ◽

Line Measurement ◽

On Line

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.

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Multi-Channel Optoelectronic Measurement System for Soil Nutrients Analysis

Electronics ◽

10.3390/electronics8040451 ◽

2019 ◽

Vol 8 (4) ◽

pp. 451 ◽

Cited By ~ 1

Author(s):

Liuzheng Ma ◽

Zhenfeng Li ◽

Zephania Birech ◽

Shixin Li ◽

Yatao Yang ◽

...

Keyword(s):

Measurement System ◽

Detection Efficiency ◽

Liquid Crystal Display ◽

Soil Samples ◽

Experimental Results ◽

Circuit Board ◽

Light Sources ◽

Relative Standard ◽

Compensation Concentration ◽

Optoelectronic Measurement

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.

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The Design of Intelligent Measurement System Based on Time-Triggered Embedded System

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.643.196 ◽

2014 ◽

Vol 643 ◽

pp. 196-200

Author(s):

Feng Huang ◽

Xin Bian ◽

Guo Rong Cao

Keyword(s):

Embedded System ◽

Data Storage ◽

Measurement System ◽

Data Transmission ◽

Experimental Results ◽

Control Data ◽

Intelligent Measurement ◽

Measurement Control ◽

The Stability ◽

Flexible Measurement

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.

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