scholarly journals Design and Implementation of an Atmospheric Anion Monitoring System Based on Beidou Positioning

Sensors ◽  
2021 ◽  
Vol 21 (18) ◽  
pp. 6174
Author(s):  
Jinhu Wang ◽  
Binze Xie ◽  
Jiahan Cai ◽  
Yuhao Wang ◽  
Jiang Chen ◽  
...  
Keyword(s):  
Monitoring System ◽  
Clinical Medicine ◽  
Atmospheric Oxygen ◽  
Unmanned Vehicles ◽  
Ion Concentration ◽  
Oxygen Ion ◽  
Detection Technology ◽  
Electromagnetic Field Theory ◽  
Oxygen Anions ◽  
Pass Through

Atmospheric oxygen anions play an important role in medical health, clinical medicine, environmental health, and the ecological environment. Therefore, the concentration of atmospheric anions is an important index for measuring air quality. This paper proposes a monitoring system for atmospheric oxygen anions based on Beidou positioning and unmanned vehicles. This approach combines Beidou positioning technology, 4G pass-through, the unmanned capacitance suction method, electromagnetic field theory, and atmospheric detection technology. The proposed instrument can monitor the overall negative oxygen ion concentration, temperature, and humidity in a certain region over time and provide data visualization for the concentration of negative oxygen ions.

scholarly journals DESIGN AND IMPLEMENTATION OF INTELLIGENT SEAWATER AUTOMATIC ON-LINE MONITORING SYSTEM BASED ON BIG DATA

2018 ◽  
Vol 48 (3) ◽  
pp. 157-162
Author(s):  
L. Y. LI ◽  
J. YANG ◽  
Y. LEI ◽  
K. H. XIONG ◽  
W. H. CHEN ◽  
...  
Keyword(s):  
Monitoring System ◽  
Online Monitoring ◽  
Large Data ◽  
Test System ◽  
Data Conversion ◽  
Detection Technology ◽  
Large Data Analysis ◽  
Using Data ◽  
Integration Data ◽  
Sea Area

Based on large data analysis method and automatic detection technology, this paper designs a test system, which can realize intelligent online monitoring of seawater. Based on the theory of large data, the data preprocessing method of large data is applied by relying on the information transmitted by integrated sensors. Using data cleaning, data integration, data conversion and data reduction technology, a large number of data collected by marine monitoring devices are processed accurately. An automatic seawater monitoring system is designed on a software platform. Finally, combined with the experimental data of a certain sea area, the test results are analyzed, which proves the feasibility and effectiveness of the designed seawater online monitoring system. It has achieved the effect of seawater environmental analysis and early warning.

scholarly journals Development of Miniaturized Water Quality Monitoring System Using Wireless Communication

Sensors ◽  
2019 ◽  
Vol 19 (17) ◽  
pp. 3758
Author(s):  
Hsing-Cheng Yu ◽  
Ming-Yang Tsai ◽  
Yuan-Chih Tsai ◽  
Jhih-Jyun You ◽  
Chun-Lin Cheng ◽  
...  
Keyword(s):  
Water Quality ◽  
Electrical Conductivity ◽  
Wireless Communication ◽  
Monitoring System ◽  
Industrial Waste ◽  
Continuous Monitoring ◽  
Copper Ion ◽  
Water Quality Monitoring ◽  
Ion Concentration ◽  
Quality Monitoring

Recently, environmental pollution resulting from industrial waste has been emerging in an endless stream. The industrial waste contains chemical materials, heavy metal ions, and other toxic materials. Once the industrial waste is discharged without standards, it might lead to water or environmental pollution. Hence, it has become more important to provide evidence-based water quality monitoring. The use of a multifunctional miniaturized water quality monitoring system (WQMS), that contains continuous monitoring, water quality monitoring, and wireless communication applications, simultaneously, is infrequent. Thus, electrodes integrated with polydimethylsiloxane flow channels were presented in this study to be a compound sensor, and the sensor can be adopted concurrently to measure temperature, pH, electrical conductivity, and copper ion concentration, whose sensitivities are determined as 0.0193 °C/mV, −0.0642 pH/mV, 1.1008 mS/V·cm (from 0 mS/cm to 2 mS/cm) and 1.1975 mS/V·cm (from 2 mS/cm to 5.07 mS/cm), and 0.0111 ppm/mV, respectively. A LoRa shield connected into the system could provide support as a node of long range wide area network (LoRaWAN) for wireless communication application. As mentioned above, the sensors, LoRa, and circuit have been integrated in this study to a continuous monitoring system, WQMS. The advantages of the multifunctional miniaturized WQMS are low cost, small size, easy maintenance, continuous sampling and long-term monitoring for many days. Every tested period is 180 min, and the measured rate is 5 times per 20 min. The feedback signals of the miniaturized WQMS and measured values of the instrument were obtained to compare the difference. In the measured results at three different place-to-place locations the errors of electrical conductivity are 0.051 mS/cm, 0.106 mS/cm, and 0.092 mS/cm, respectively. The errors of pH are 0.68, 0.87, and 0.56, respectively. The errors of temperature are 0.311 °C, 0.252 °C, and 0.304 °C, respectively. The errors of copper ion concentration are 0.051 ppm, 0.058 ppm, 0.050 ppm, respectively.

Influence of the Membrane Potential on the Intracellular Light Induced Ca2+ -Concentration Change of the Limulus Ventral Photoreceptor Monitored by Arsenazo III under Voltage Clamp Conditions

1984 ◽  
Vol 39 (9-10) ◽  
pp. 986-992 ◽  
Author(s):  
I. Ivens ◽  
H. Stieve
Keyword(s):  
Voltage Clamp ◽  
Light Flash ◽  
Membrane Voltage ◽  
Ion Concentration ◽  
Arsenazo Iii ◽  
Substantial Part ◽  
Voltage Range ◽  
Intracellular Ca ◽  
Intracellular Calcium Ion ◽  
Pass Through

Abstract The light induced transmission change (Arsenazo signal) of an Arsenazo III injected ventral photoreceptor cell of Limulus polyphemus was studied under voltage clamp. The transmission change which represents a change of free intracellular calcium ion concentration, [Ca2+]i, was investigated for its dependence upon membrane voltage. The peak amplitude of the Arsenazo signal decreases in a linear fashion with the clamp voltage in the examined voltage range (from -80 to + 40 mV). In low Ca2+ saline ([Ca2+]e = 250 μᴍ) this decrease in the amplitude of the Arsenazo signal was more pronounced, while in saline with increased Ca2+ ([Ca2+]e = 40, 50 and 100 mᴍ), there is almost no change of the Arsenazo signal with varied membrane voltage. The recovery of the Arsenazo signal (i.e. recovery of the transmission back to the value before the light flash) is faster during hyperpolarization, this recovery being slowed down when the cell is depolarized. From these experiments it is concluded that a substantial part of the Arsenazo signal is due to a light induced influx of Ca2+ from the extracellular space across the cell membrane into the cytoplasma. Conceivably the Ca2+ could pass through light activated Na+ channels. Subsequently the increased intracellular Ca2+ is lowered to the preillumination level, by a membrane voltage dependent mechanism possibly an Na+-Ca2+ exchange. The data do not exclude the possibility that a part of the Ca2+ responsible for the Arsenazo signal is released from intracellular stores.

A Study on the Campus Public Safety Monitoring System Based on Intelligent Vision

2014 ◽  
Vol 1028 ◽  
pp. 257-261
Author(s):  
Xi Zhu Zhang
Keyword(s):  
Monitoring System ◽  
Video Analysis ◽  
Event Detection ◽  
Public Safety ◽  
Safety Monitoring ◽  
Video Data ◽  
Visual Monitoring ◽  
Campus Security ◽  
Detection Technology ◽  
Safety Monitoring System

With the continuous development of video detection technology, the video analysis technology based on campus security has become an important part of the construction of safe campus. As the college students still are a group that has poor ability of security protection, campus security issue is closely related to the stability of society and family happiness, and has become a topic of concern to the whole society. The intelligent vision-based campus public safety monitoring system is an important means to achieve security monitoring, it can automatically analyze the video image sequence, and detect, track and identify objects in the monitoring scene without human intervention, and make high-level understanding and analysis of behaviors on this basis. Most of the existing visual monitoring systems can collect and store video data, and the real-time event detection task can automatically be generated through background analysis. Intelligent visual monitoring system should not only be used for accident investigation, but also be used to prevent potential disasters and accidents. The system is consisted of system management platform, event mining and analysis, monitoring and extraction of moving targets, forecasting and tracking targets. The paper makes an in-depth study on the application of intelligent visual detection technology on campus. Based on the intelligent visual video analysis, hidden Markov model is adopted in the paper for video event detection and analysis, motion features and shape features are taken as the observation data, and segmentation method is adopted to analyze the influence of video viewing height and angle on the detection result.

A study of a real-time online monitoring system for the durability of concrete structures

2016 ◽  
Vol 63 (3) ◽  
pp. 184-189
Author(s):  
Mingming Xiao ◽  
Shilong Zhang ◽  
Yanbing Tang ◽  
Zhongmao Lin ◽  
Jiahong Chen
Keyword(s):  
Real Time ◽  
Monitoring System ◽  
Concrete Structures ◽  
Chloride Ion ◽  
Corrosion Current ◽  
Ion Concentration ◽  
Corrosion Monitoring ◽  
Content Type ◽  
System Data ◽  
Durability Of Concrete

Purpose This study aims to explore the effect of corrosion monitoring technology for ensuring concrete structure safety. Design/methodology/approach A new monitoring system scheme with unattended operation to evaluate the durability of concrete structures is presented, which includes four components, namely, a multi-function embedded sensor, a microprocessor data collecting module, a system data analysis and storage module, and a remote server module. Findings The system carries out monitoring of chloride ion concentration and pH in concrete, corrosion current density and of the self-corrosion potential of the reinforcing steel bar. Originality/value This system provides real-time, online, lossless monitoring for concrete structures.

Theoretical Calculation of the Electrical Potential at the Electrode/Electrolyte Interfaces of Solid Oxide Fuel Cells

2005 ◽  
Vol 2 (4) ◽  
pp. 238-245 ◽  
Author(s):  
Ismail Celik ◽  
S. Raju Pakalapati ◽  
Maria D. Salazar-Villalpando
Keyword(s):  
Free Energy ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Electrical Potential ◽  
Solid Oxide ◽  
Ion Concentration ◽  
Oxide Fuel ◽  
Oxygen Ion ◽  
Proposed Model ◽  
Semi Empirical

A new semi-empirical model is formulated to calculate the potential differences at the cathode/electrolyte and electrolyte/anode interfaces separately for solid oxide fuel cells. The new model is based on a reduced reaction mechanism, and it accounts for the oxygen ion concentration at these interfaces. The model also considers the Gibbs free energy for the two electrode interfaces seperately. Results from case studies demonstrate the great potential of the proposed model

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