Technological advances in recent years have significantly changed the way an operating room works.This work aims to create a platformto solve the problems of operating room occupancy and prepare the rooms with an envi...Technological advances in recent years have significantly changed the way an operating room works.This work aims to create a platformto solve the problems of operating room occupancy and prepare the rooms with an environment that is favorable for all operations.Using this system,a doctor can control all operation rooms,especially before an operation,and monitor their temperature and humidity to prepare for the operation.Also,in the event of a problem,an alert is sent to the nurse responsible for the room and medical stuff so that the problem can be resolved.The platformis tested using a Raspberry PI card and sensors.The sensors are connected to a cloud layer that collects and analyzes the temperature and humidity values obtained from the environment during an operation.The result of experimentations is visualized through a web application and an Android application.The platform also considers the security aspects such as authorization to access application functionalities for the Web and the mobile applications.We can also test and evaluate the system’s existing problems and vulnerabilities using the IEEE and owasp IoT standards.Finally,the proposed framework is extended with a model based testing technique that may be adopted for validating the security aspects.展开更多
The AREVA CRAFT （control room accident filtration system） is a solution that maintains the proper air conditions in the main control room and emergency control facilities by filtering the air and removing noble gase...The AREVA CRAFT （control room accident filtration system） is a solution that maintains the proper air conditions in the main control room and emergency control facilities by filtering the air and removing noble gases in case of a severe accident in a nuclear power plant with increased activity concentration in the plant environment.展开更多
The article describes the digital instrumentation and control system for unit 5 ＆ 6 of YangJiang NPP, involving the overall I ＆ C （instrumentation and control） structure, the basic requirements and independent ver...The article describes the digital instrumentation and control system for unit 5 ＆ 6 of YangJiang NPP, involving the overall I ＆ C （instrumentation and control） structure, the basic requirements and independent verification and validation. Advanced I ＆ C systems for YangJiang NPPs have to meet increasing demands for safety and availability. Additionally, the specific requirements coming from the nuclear qualification have to be fulfilled.展开更多
Variable air volume(VAV)air-conditioning(AC)systems are widely employed to achieve a comfortable room thermal and humid environment depending on its better regulation performance and energy efficiency.In the single co...Variable air volume(VAV)air-conditioning(AC)systems are widely employed to achieve a comfortable room thermal and humid environment depending on its better regulation performance and energy efficiency.In the single coil VAV AC system,conventional proportional-integral(PI)control algorithm is usually adopted to track the set-points of the room temperature and humidity by regulating the supply air flow rate and the chilled water flow rate,respectively.However,the control performance is usually not good due to the high coupling of the heat and mass transfer in the air-handling unit(AHU).A model-based control method is developed to realize the decoupling control of the room temperature and humidity according to the bilinear characteristics of the temperature and humidity variation.In this control method,a bilinear room temperature controller is used to track the room temperature set-point based on the real-time cooling load,while a room humidity controller is used to track the room humidity set-point depending on the real-time humidity load.The control performance was validated in a simulated VAV AC system.The test results show that comparing with the conventional PI control,the room temperature and humidity are controlled much more robustly and accurately by using the proposed model-based control method.展开更多
针对环境因素对分散控制系统(distributed control system,DCS)的影响而引起电子元件损坏,导致绝缘降低、击穿、接触不良,电阻变化和电气性能恶化等问题,分析了电子间温度、湿度、空气质量和电磁干扰等环境因素对DSC的影响,提出了电子...针对环境因素对分散控制系统(distributed control system,DCS)的影响而引起电子元件损坏,导致绝缘降低、击穿、接触不良,电阻变化和电气性能恶化等问题,分析了电子间温度、湿度、空气质量和电磁干扰等环境因素对DSC的影响,提出了电子间内使用内循环的立式柜机空调,加装温度计、空气滤清器、湿度计等,信号电缆应远离强干扰源等各项应对措施来提高运行DCS的可靠性,保证机组安全稳定运行。展开更多
不间断电源(Uninterruptible Power Supply,UPS)系统是广电播控机房中至关重要的设备之一,其性能稳定性直接影响播控机房的正常运行。深入研究UPS系统的概述、配置方法、设备选型与配置以及性能评估等方面,为广电播控机房UPS的合理配置...不间断电源(Uninterruptible Power Supply,UPS)系统是广电播控机房中至关重要的设备之一,其性能稳定性直接影响播控机房的正常运行。深入研究UPS系统的概述、配置方法、设备选型与配置以及性能评估等方面,为广电播控机房UPS的合理配置提供理论支持和实践指导,同时为UPS系统的运行与管理提供重要参考。展开更多
基金Taif University Researchers Supporting Project(TURSP-2020/36),Taif University,Taif,Saudi Arabia.
文摘Technological advances in recent years have significantly changed the way an operating room works.This work aims to create a platformto solve the problems of operating room occupancy and prepare the rooms with an environment that is favorable for all operations.Using this system,a doctor can control all operation rooms,especially before an operation,and monitor their temperature and humidity to prepare for the operation.Also,in the event of a problem,an alert is sent to the nurse responsible for the room and medical stuff so that the problem can be resolved.The platformis tested using a Raspberry PI card and sensors.The sensors are connected to a cloud layer that collects and analyzes the temperature and humidity values obtained from the environment during an operation.The result of experimentations is visualized through a web application and an Android application.The platform also considers the security aspects such as authorization to access application functionalities for the Web and the mobile applications.We can also test and evaluate the system’s existing problems and vulnerabilities using the IEEE and owasp IoT standards.Finally,the proposed framework is extended with a model based testing technique that may be adopted for validating the security aspects.
文摘The AREVA CRAFT （control room accident filtration system） is a solution that maintains the proper air conditions in the main control room and emergency control facilities by filtering the air and removing noble gases in case of a severe accident in a nuclear power plant with increased activity concentration in the plant environment.
文摘The article describes the digital instrumentation and control system for unit 5 ＆ 6 of YangJiang NPP, involving the overall I ＆ C （instrumentation and control） structure, the basic requirements and independent verification and validation. Advanced I ＆ C systems for YangJiang NPPs have to meet increasing demands for safety and availability. Additionally, the specific requirements coming from the nuclear qualification have to be fulfilled.
基金This work presented in this paper is financially supported by a grant(No.51678263)of National Science Foundation of China.
文摘Variable air volume(VAV)air-conditioning(AC)systems are widely employed to achieve a comfortable room thermal and humid environment depending on its better regulation performance and energy efficiency.In the single coil VAV AC system,conventional proportional-integral(PI)control algorithm is usually adopted to track the set-points of the room temperature and humidity by regulating the supply air flow rate and the chilled water flow rate,respectively.However,the control performance is usually not good due to the high coupling of the heat and mass transfer in the air-handling unit(AHU).A model-based control method is developed to realize the decoupling control of the room temperature and humidity according to the bilinear characteristics of the temperature and humidity variation.In this control method,a bilinear room temperature controller is used to track the room temperature set-point based on the real-time cooling load,while a room humidity controller is used to track the room humidity set-point depending on the real-time humidity load.The control performance was validated in a simulated VAV AC system.The test results show that comparing with the conventional PI control,the room temperature and humidity are controlled much more robustly and accurately by using the proposed model-based control method.
文摘针对环境因素对分散控制系统(distributed control system,DCS)的影响而引起电子元件损坏,导致绝缘降低、击穿、接触不良,电阻变化和电气性能恶化等问题,分析了电子间温度、湿度、空气质量和电磁干扰等环境因素对DSC的影响,提出了电子间内使用内循环的立式柜机空调,加装温度计、空气滤清器、湿度计等,信号电缆应远离强干扰源等各项应对措施来提高运行DCS的可靠性,保证机组安全稳定运行。
文摘不间断电源(Uninterruptible Power Supply,UPS)系统是广电播控机房中至关重要的设备之一,其性能稳定性直接影响播控机房的正常运行。深入研究UPS系统的概述、配置方法、设备选型与配置以及性能评估等方面,为广电播控机房UPS的合理配置提供理论支持和实践指导,同时为UPS系统的运行与管理提供重要参考。
