IJPEM

Performance Improvement of a Pressure Sensor Using Fast Median Algorithm


이장명/부산대학교




  • Keywords : Vessel Diesel Engine, Pressure Sensor, Dynamic Pressure, Median Filter
  • A novel method of improving the precision of the pressure sensor has been proposed by applying the design and correction technology of the pressure sensor that measures the explosion pressure in the cylinder combustion chamber of the low-speed 2-stroke diesel engine for ships. To enable dynamic pressure measurement in high-temperature and high-pressure environments, a diaphragm-type piezoelectric pressure sensor has been designed using the quartz. The fast median filter algorithm has been adopted and modified for sensor calibration which is proposed for sensor signal processing and calculation to improve the measurement reliability of pressure sensors. The pressure sensor has been manufactured after verifying the performance through simulations after the basic design and circuit design. To verify the performance of the manufactured pressure sensor, a pressure generating simulator has been designed and utilized for the performance verification. To demonstrate the performance in real situation, the pressure sensor has been installed on the ship engine. It has been confirmed that the proposed new sensor has excellent performance and high reliability comparing to the conventional sensors.
IJPEM-GT

Cyber-Physical Systems as an Enabler of Circular Economy to Achieve Sustainable Development Goals: A Comprehensive Review


Mohammad Nazzal/American University of Sharjah




  • Keywords : Circular economy, Cyber-physical systems, Sustainable development goals, Industry 4.0, Sustainability, Circular economy assessment
  • Industrialization has brought wealth, prosperity, and abundance to many nations. However, it has had many drawbacks on people’s health and the environment. Several paradigms have been proposed and implemented in an effort to suppress and reverse the adverse impacts of human activities and industrialization. A popular approach that serves as a solution to many of the negative implications of industry today is the circular economy (CE). With today’s top-notch technologies, the transition from the conventional linear economy to CE has been made easier. For example, the implementation of cyber-physical systems (CPSs), an Industry 4.0 (I4.0) tool, within a CE can substantially increase efficiency and reduce waste. This work presents a thorough review on the applications of cyber-physical systems within each of the CE stages, the contribution of different CPS technologies to the sustainable development goals (SDGs), and the current state of the CE assessment tools. The contribution of different CPS tools to each CE stage is demonstrated through several practical examples. In addition, this work reveals how the different CPS technologies applications contribute to the attainment of different SDGs set by the United Nations. It is also deduced from the review of the current state of the CE assessment tools that there is a need for a standardized comprehensive CE measuring or rating system to allow businesses on the micro, meso, and macro levels of the economy improve their circulatory.