2oo4 architecture, an advanced processing architecture for safety related systems
نویسندگان
چکیده
The 2 out of 4-system (2oo4) is an advanced safety architecture. A 2oo4-system is 2-failure safe, this means that at least two of the four channels have to work correctly in order to trigger the safety function. In order to classify the quality of a system different parameters have to be calculated, like the PFD and MTTF. In this paper, equations are indicated for PFD for normal and common-cause-failures. Additionally, the Markov-model for a 2oo4-architecture is introduced the MTTF-value for this architecture is calculated. The results are high availability and a high reliability. Key-Words: 2oo4-Architecture, Availability, IEC/EN 61508, Reliability, Markov-model, MTTF, PFD, SIL
منابع مشابه
Markov Models for 2004 Architecture for Safety Related Systems
An advanced safety architecture is the 2 out of 4-system (2oo4). In order to trigger the safety function at least two of the four channels must work correctly. It is said: “A 2oo4-system is 2-failure safe”. In order to classify the quality of a system we calculate different parameters. In the report equations are indicated for PFD for normal and common-cause-failures. Also the Markov-model for ...
متن کاملDesign of a novel congestion-aware communication mechanism for wireless NoC architecture in multicore systems
Hybrid Wireless Network-on-Chip (WNoC) architecture is emerged as a scalable communication structure to mitigate the deficits of traditional NOC architecture for the future Multi-core systems. The hybrid WNoC architecture provides energy efficient, high data rate and flexible communications for NoC architectures. In these architectures, each wireless router is shared by a set of processing core...
متن کاملفتوتنامه معماری
At least two general systems of education can be identified in Iranian-Islamic architecture. One is the traditional teaching method of architecture which has centuries of precedent within which the transition of concepts was conducted through person to person and master-apprentice training; second, is the academic studying method in recent period, which is based on European schools’ patte...
متن کاملDesign and Implementation of Digital Demodulator for Frequency Modulated CW Radar (RESEARCH NOTE)
Radar Signal Processing has been an interesting area of research for realization of programmable digital signal processor using VLSI design techniques. Digital Signal Processing (DSP) algorithms have been an integral design methodology for implementation of high speed application specific real-time systems especially for high resolution radar. CORDIC algorithm, in recent times, is turned out to...
متن کاملLight Processing in Iranian Houses; Manifestation of Meanings and Concepts
Light is one of the many wonders in the architecture Iranian houses. It is a major tool for space creation anddesign. An important consideration in the Iranian architecture, which takes a functional and conceptual approach to the extensive subject of light, has been that light should create a beautiful and spiritual space in addition to being functional. The light used in a house should be plea...
متن کامل