Design of integrated SCADA systems in piston production manufacturing case study on the conveyor, the coolant, the hydraulic, and the alarm systems using PLC CJ1M and CJ1W-ETN21

2017 ◽  
Author(s):  
Syahril Ardi ◽  
Agus Ponco ◽  
Rizky Awaludin Latief
Keyword(s):  
Alarm Systems ◽  
Scada Systems

Bio-Inspired Background Suppression Technique and its Implementation into Digital Circuit

2012 ◽  
pp. 340-358
Author(s):  
Takao Yamanaka ◽  
Yuta Munakata
Keyword(s):  
Gas Sensors ◽  
Hebbian Learning ◽  
Gas Sensing ◽  
Digital Circuit ◽  
Background Suppression ◽  
Adaptation Mechanism ◽  
Alarm Systems ◽  
Suppression Technique ◽  
Background Gas

Gas sensors have been widely used for various applications, such as gas leak detection, fire alarm systems, and odor-sensing systems. A problem of the gas sensors has been the selectivity to a target gas: background gases interfere with the measurement of the target gas. In the human olfaction, sensitivity to background odors is decreased by adaptation to the odors. Recently, several bio-inspired signal-processing methods mimicking the adaptation mechanism have been proposed for improving the selectivity of the gas sensors. In this chapter, the studies on the bio-inspired background suppression methods are reviewed. Furthermore, a case study of the bio-inspired background suppression is introduced. In the case study, a perceptron neural network with anti-Hebbian learning was used for realizing the adaptation to the background gas, and was implemented into a digital circuit for real-time gas sensing.

scholarly journals A Nearly Zero-Energy Microgrid Testbed Laboratory: Centralized Control Strategy Based on SCADA System

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 2106 ◽  
Author(s):  
Mostafa Kermani ◽  
Domenico Luca Carnì ◽  
Sara Rotondo ◽  
Aurelio Paolillo ◽  
Francesco Manzo ◽  
...  
Keyword(s):  
Renewable Energy Sources ◽  
Distribution Networks ◽  
Energy Management System ◽  
Centralized Control ◽  
Zero Energy ◽  
Scada System ◽  
Scada Systems ◽  
University Of Rome ◽  
Active Distribution Networks

Currently, despite the use of renewable energy sources (RESs), distribution networks are facing problems, such as complexity and low productivity. Emerging microgrids (MGs) with RESs based on supervisory control and data acquisition (SCADA) are an effective solution to control, manage, and finally deal with these challenges. The development and success of MGs is highly dependent on the use of power electronic interfaces. The use of these interfaces is directly related to the progress of SCADA systems and communication infrastructures. The use of SCADA systems for the control and operation of MGs and active distribution networks promotes productivity and efficiency. This paper presents a real MG case study called the LAMBDA MG testbed laboratory, which has been implemented in the electrical department of the Sapienza University of Rome with a centralized energy management system (CEMS). The real-time results of the SCADA system show that a CEMS can create proper energy balance in a LAMBDA MG testbed and, consequently, minimize the exchange power of the LAMBDA MG and main grid.

Proposal of Community Alarm Systems over Digital Terrestrial Television based on ISDB-T Standard: A Case Study of Ecuador

2020 ◽  
Author(s):  
Dayanna S. Zhagnnay-Castro ◽  
Luis F. Guerrero-Vasquez ◽  
Gabriel R. Solano-Sanchez ◽  
Edgar E. Ochoa-Figueroa ◽  
Jorge O. Ordonez-Ordonez ◽  
...  
Keyword(s):  
Alarm Systems ◽  
Digital Terrestrial Television

Capitalizing on SDN-based SCADA systems: An anti-eavesdropping case-study

2015 ◽  
Author(s):  
Eduardo Germano da Silva ◽  
Luis Augusto Dias Knob ◽  
Juliano Araujo Wickboldt ◽  
Luciano Paschoal Gaspary ◽  
Lisandro Zambenedetti Granville ◽  
...  
Keyword(s):  
Scada Systems

scholarly journals A User Requirement-driven Approach Incorporating TRIZ and QFD for Designing a Smart Vessel Alarm System to Reduce Alarm Fatigue

2019 ◽  
Vol 73 (1) ◽  
pp. 212-232 ◽  
Author(s):  
Fan Li ◽  
Chun-Hsien Chen ◽  
Ching-Hung Lee ◽  
Li-Pheng Khoo
Keyword(s):  
Quality Function Deployment ◽  
Situational Awareness ◽  
Safety Issue ◽  
Phase Iii ◽  
Alarm System ◽  
User Requirement ◽  
Alarm Fatigue ◽  
Alarm Systems ◽  
Design Requirements

Alarm fatigue is a critical safety issue, as it can increase workload and impair operators' situational awareness. This paper proposes a design methodology to enhance the interaction between alarm systems and operators. Through input from VTS personnel as the fundamental design requirements, a user requirement-driven design framework is proposed. It integrates quality function deployment, the theory of inventive problem solving, and software quality characteristics into three design phases. In Phase I, user requirements are obtained from the analysis of current working processes. Phase II investigates the specific non-functional design requirements of vessel alarm systems and the contradictions. In Phase III, the innovative principles generated with the contradiction matrix were analysed. A case study was conducted to verify and illustrate this framework, resulting in a conceptualisation design of a smart vessel alarm system.

THERMAL AND OVERPRESSURE HAZARDS MODELLING AND SIMULATION: A CASE STUDY OF REFINERY FIRED HEATER

2021 ◽  
Vol 36 (1) ◽  
pp. 67-76
Author(s):  
H. Jamilu ◽  
U. Abubakar-Zaria ◽  
S. M. Shuwa
Keyword(s):  
Flame Length ◽  
Hole Size ◽  
Atmospheric Conditions ◽  
Liquefied Petroleum Gas ◽  
Radiation Level ◽  
Blow Down ◽  
Alarm Systems ◽  
Operational Life ◽  
Flash Fire

Crude oil-fired heaters are associated with considerable fire and explosion hazards. The heaters present higher risks at later operational life due to ageing, wear and obsolescence. It is therefore important to re-evaluate such heaters to determine the adequacy or otherwise of the existing safeguards. This paper presents results of studies on hazard levels in aged fired heaters through quantitative consequence modeling method. A number of credible failure scenarios were considered. In particular, characteristics of potential jet fires due to Liquefied Petroleum Gas (LPG) leaks from hole sizes: 15, 30, 50 and 100 mm were investigated. For the 100 mm hole size, it was found that thermal radiation level of up to 37.5 kW/m2 could be experienced within 25 m radius of the heater, which is enough to affect nearby operators severely and could also adversely affect critical pieces of equipment around. Fireball potential with peak thermal density of about 12.5 kW/m2 was also observed within 2 m radius. For the 100 mm hole size, lower flammability limit of the fuel could be attained within 16 m downwind which poses flash fire risks. Overpressures of 1.02, 1.14 and 1.21 bar could be experienced at 30, 6 and 4 m respectively away from the fired heater which could result in partial demolition of structures that are within the radius.Overall, the results indicate that the risk profile is very sensitive to leak sizes, operating and atmospheric conditions as well as the fuel quantity being held, among others. For the chosen case study, higher integrity protection layers, in form of safety instrumented systems, relief, blow down and alarm systems, are recommended. Keywords: Downwind distance; Consequence modeling; Radiation intensity; Flame length; Overpressure; Toxicity; Liquefied Petroleum Gas.

Sign in / Sign up

Export Citation Format

Share Document