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International Conference on Emerging Technologies and Factory Automation (ETFA)

作者： Huiyun Sheng Michael Schwarz Josef Börcsök Department of Computer architecture and System programming University of Kassel Kassel Germany

ISBN: (纸本)9781467347358

This paper proposes a continuous, non-invasive blood pressure monitoring system concept, which uses a safety microprocessor to connect sensors for building a body sensor network. The changes in Pulse Transit Time (PTT) can be detected with the sensor network. The microprocessor gathers the PTT and other vital signs of the patient to derive changes in blood pressure. Through the new Bluetooth protocol for safety systems, the current blood pressure value can be sent to a variety of terminals present in the wireless network, such as mobile phone, PC and medical monitoring systems. The 1oo2 architecture of the used microprocessor can provide high safety to a rating of safety integrity level 3 (SIL3), thus the whole network can meet the safety required in medical care systems.

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Model Based Development Methodology in Compliance with ISO 26262 for Safe Automotive ECU

Model Based Development Methodology in Compliance with ISO 2...

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Electrical, computer and Energy Technologies (ICECET), International Conference on

作者： Muhammad Ikram Hafiz Department of Computer Architecture and System Programming University of Kassel Kassel Germany

This work presents a practical approach of designing a functionally safe ECU for automotive application by implementing the Model Based Development (MBD) methodology. Functional safety (FuSa) in automotive can be achieved by strictly following the processes of electrical and electronic systems development as given in the ISO 26262. The scope of FuSa encompasses the risks emerging from systematic failures and random hardware failures. One approach to mitigate these failures is the Model Based Development (MBD) on which the ISO 26262 provides guidance. This approach enables to model an ECU and accelerates an IP creation by automatic RTL code generation for rapid prototyping on an FPGA level. In this work the MBD is implemented in accordance to the ISO 26262 to design and test a hardware model of an embedded ECU. The embedded Design under Test (DUT) is simulated and its output verified in Matlab/Simulink. Upon successful results, the RTL codes of the DUT are generated for a target FPGA. The RTL codes are simulated and the functionality of the DUT is verified at the FPGA level.

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Modeling a safety-related system for continuous non-invasive blood pressure monitoring

Modeling a safety-related system for continuous non-invasive...

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IEEE Biomedical Circuits and systems (BIOCAS)

作者： Huiyun Sheng Michael Schwarz Josef Börcsök Department of Computer architecture and System Programming University of Kassel Kassel Germany

In recent years, Pulse Transit Time (PTT) - based non-invasive continuous blood pressure monitoring systems have been investigated extensively. But the most relevant studies did not pay attention to the safety requirement of the system. In this paper a method is proposed to model the safety-related system for continuous noninvasive blood pressure monitoring. The V model, 1oo2 system and safe Bluetooth communication are used to enhance the safety of the system.

关键词： Biomedical monitoring Blood pressure Monitoring Safety Pressure measurement Wireless communication Medical services

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International Conference on Technological Advances in Electrical, Electronics and computer Engineering (TAEECE)

作者： Samer Telawi Ali Hayek Josef Börcsök Department of Computer Architecture and System Programming University of Kassel Kassel Germany

Nowadays, many noticeable continues efforts are taken in the vehicle industry to develop robust intelligent systems that control and monitor the vehicles during operational time to lower the side effects of some abnormal conditions such as sliding and spinning; because of their main role in affecting the human safety and the vehicle life-time as well as the costs related to maintenance. Therefore, the importance of manipulating and controlling these special statuses with respect to safety and cost are the main motivations behind conducting this research work. In this paper a conceptual prototype of a safety-related platform for monitoring and recognizing the vehicles states by means of vibration sensors incorporated with incremental rotary encoders is presented. Additionally, the proposed approaches and algorithms to detect the vehicle status based on the captured sensory data are also presented.

关键词： Vehicles Vibrations Sensors Safety Acceleration Spinning Wheels

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ATPG Method with a Hybrid Compaction Technique for Combinational Digital systems

ATPG Method with a Hybrid Compaction Technique for Combinati...

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SAI Computing Conference

作者： Abdul Rafay Khatri Ali Hayek Josef Borcsok Department of Computer Architecture and System Programming University of Kassel Kassel Germany

ISBN: (纸本)9781467384612

In this paper, the Test Pattern Generation (TPG) with a new simple hybrid (dynamic and static) compaction technique for combinational logic circuits and systems is presented. Digital systems are implemented nowadays on an advance VLSI technology, which is called Field Programmable Gate Array (FPGA). The test procedure requires a deliberate introduction of faults in the system Under Test (SUT). FPGA circuits and systems are developed and written in Hardware Description Languages (HDLs). In addition, a novel method is also proposed and implemented in order to intentionally inject faults in the Verilog HDL code design of the SUT. It covers all possible fault locations in the SUT. This approach provides high quality compact test vectors and efficient memory utilization in comparison with other state-of-the-art methods. Not only are the hardness of individual faults and the sensitiveness of fault locations determined, but also their effectiveness is proposed in the fault tolerance strategy.

关键词： Test pattern generation Dynamic compaction Static compaction Fault coverage Hardness

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Development of safety related systems

Development of safety related systems

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International Forum on Strategic Technology, IFOST

作者： Josef Burcsuk Department of Computer Architecture and System Programming University of Kassel Kassel Germany

ISBN: (纸本)9781424435890

The international standard IEC/61508 provides the developer with guidelines for the design and implementation of safety related systems according to this standard. This standard states qualitative and quantitative criteria in order to judge a safety related system in such a way that safety critical applications can be implemented. This paper details a quantitative criterion which is the probability of failure on low demand, known as PFD. After an introduction into this topic, the principle steps to calculate the probability of failure with the help of reliability block diagrams for different hardware architecture will be detailed and presented. The PFD-equations will be derived for a 1oo1 architecture with the help of MacLaurin series.

关键词： IEC standards Software safety Phase frequency detector Standards development Hardware Guidelines Probability Software standards Maintenance Electrical safety

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A filtered tuning method for a GPC controller

A filtered tuning method for a GPC controller

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IET Irish Signals and systems Conference (ISSC 2010)

作者： M.H. Schwarz C.S. Cox J. Börcsök Department of Computer architecture and System programming Safety Computer Technology University of Kassel Germany Control Systems Centre University of Sunderland UK Department of Computer architecture and System programming University of Kassel Germany

This paper presents a new tuning method based on model parameters identified in closed-loop. For classical controllers such as PI(D) controllers a large number of simple tuning methods for various application areas exist. However, when it comes to designing a generalised predictive controller (GPC) four parameters have to be specified. To choose those parameters is not a trivial task since they are not directly related to control or regulation performance. The presented tuning method exploits model-parameters to select suitable controller parameters. Additionally, a Rhinehart filter is incorporated in the design to decrease the impact of noise, therefore, a fifth parameter has to be optimised. The proposed method has been tested in simulation and on a real system.

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Wireless communication modeling for safety related systems

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International Journal of Circuits, systems and Signal Processing 2014年 8卷 330-336页

作者： Pendli, P.K. Schwarz, M. Wacker, H.D. Boercsoek, J. Department of Computer Architecture and System Programming University of Kassel Wilhelmshoeher Allee 71 Kassel34121 Germany

This paper deals with the modeling of wireless communication for safety related systems. To achieve safe wireless communication for safety related systems, the wireless channel is modeled by taking into account both bit errors and erasures (loss of information) that occur during wireless transmission of the information. To reduce the bit errors and to detect the erasures, a coding method for transmitting the code word is suggested in this paper. With this coding method, parameters such as bit error, probability of undetected error are reduced and the bit erasures that occur due to fast fading and channel losses are detected confidently. The safety methods as defined according to the European standard EN 50159-2 are taken into consideration and their implementation to achieve safe wireless communication for safety related systems is explained in this paper. The mathematical derivations to calculate the probability of failures per hour (PFH) values for wireless communication with the suggested coding method are derived. With the derived PFH equation, safety integrity level (SIL) achieved for a particular wireless technology can be determined. Finally, the SIL levels achieved for Bluetooth technology are shown. © 2014 North Atlantic University Union. All rights reserved.

关键词： Bit error rate

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Design of a low cost equipment that may limit Sudden Infant Death Syndrome 4

Design of a low cost equipment that may limit Sudden Infant ...

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4th International Conference on Advances in Biomedical Engineering, ICABME 2017

作者： Daou, Roy Abi Zeid Maalouf, Frederic Geagea, Christian Hayek, Ali Boercsoek, Josef Lebanese German University Faculty of Public Health Biomedical Technologies Department Sahel-Alma Lebanon MART Learning Education and Research Center Chananiir Lebanon Department of Computer Architecture and System Programming University of Kassel Kassel Germany

ISBN: (纸本)9781538616420

This paper deals with the Sudden Infant Death Syndrome (SIDS) problem. The main objective is to limit it by controlling the main reasons that may lead to it. Sudden infant death syndrome is the death without specific reason of a healthy newborn, usually during sleep. Although the causes are unknown, SIDS may be related to abnormalities in the infant's brain that controls breathing and arousal from sleep. Researchers have identified several measures that increase the risk on their babies. Thus, this paper proposes a low cost system that may help in monitoring the baby vital signs responsible for the SIDS and sending notifications to parents when abnormalities are encountered. The system is based on a microcontroller that regroups all sensors' outputs and a mobile application that displays these values, controls the video coming from a camera and send notifications in case of abnormal signals. The system was tested over 10 newborns (between 1 month and 2 years) over 3 weeks and the alarms were going well. © 2017 IEEE.

关键词： Alarm systems

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Design and testing tool for a safe monitoring system for neurodegenerative disorder patients 3

Design and testing tool for a safe monitoring system for neu...

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3rd International Conference on Advances in Computational Tools for Engineering Applications, ACTEA 2016

作者： Halabi, Nashaat El Achkar, Roger Daou, Roy Abi Zeid Hayek, Ali Borcsok, Josef Department of Computer and Communications Engineering Faculty of Engineering American University of Science and Technology Beirut Lebanon Department of Biomedical Technologies Faculty of Public Health Lebanese German University Sahel Alma Lebanon Department of Computer Architecture and System Programming Faculty of Electrical Engineering/Computer Science University of Kassel Kassel Germany

ISBN: (纸本)9781467385237

This paper aims to develop a sensor based monitoring and analyzing system for Neuro-Degenerative Disorder patients (NDD);this may consist on SpO2 sensor, Electrophysiological sensors, NIBP, Motion Capture sensors and Eye Monitoring sensor, taking into consideration an acceptable cost for the whole system. Recorded data will be sent to an embedded decision making unit where detection, analysis, classification, prediction and action control will occur. The sensors and the decision making unit will be implemented in a comfortable jacket that doesn't affect the patients' movements and that can be used by several patients with reduced sensor placement alterations. The decision that can be made is creating a stimulus to avoid falling in case of sudden stop while moving, initiating an alarm, sending a notification to a mobile phone application, and/or telemedicine monitoring features. Artificial Neural Networks will be used to classify and predict the abnormal cases where action should be taken, and since the sensors will be continuously recording, it is possible to achieve continuous learning for the ANN as a first phase. Initial models will be defined by testing normal behaviors and some known abnormal behaviors or symptoms related to the electrical activity and other characteristics of the heart, oxygen saturation level, eye activity and body motion. © 2016 IEEE.

关键词： Neural networks

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