Platform analysis in embedded systems

Abstract

Ever-increasing functionality and the nonfunctional constraints that must be satisfied by embedded systems lead to an enormous growth in the complexity at the system level. Platform selection for such systems is challenging task as the decision largely affects the successful implementation of embedded system. Conventional way of looking into platform selection as one dimensional problem fails when it comes to complex systems with multiple stakeholders. To overcome this challenge we propose to use 'System Views' methodology for platform analysis and selection. 'System Views' are based on multiple, concurrent views used to address the concerns of the various 'stakeholders' of the system separately. 'System Views' model has been used with success on several large software centric projects. However in this paper, we investigate the use of 'System Views' methodology in embedded system design. A systematic hardware platform selection process based on 'System Views' is presented. Moreover, it is proposed to use this approach in complex architecture systems with multiple stakeholders such as present day embedded systems at various decision making stages.

Analysis of Wide Area Monitoring System architectures

“…PMU is a function or logical device that provides synchro phasor (angle and magnitude), system frequency and rate of change of frequency measurements based on the data collected from one or more primary sensors like current (CTs) and potential (PTs) transformers. PMUs may optionally provide information such as calculated real (MW) and reactive (MVAr) powers, sampled measurements and Boolean status words [1] [2] [6]. PDC, a function or logical device, works as a node in a communication network where synchro phasor data from a number of PMUs and/or PDCs is collected, time aligned, aggregated and sent out as a single stream to the higher level PDCs and/or applications.…”

“…PDC, a function or logical device, works as a node in a communication network where synchro phasor data from a number of PMUs and/or PDCs is collected, time aligned, aggregated and sent out as a single stream to the higher level PDCs and/or applications. PDC optionally has to execute realtime wide-area protection and control applications [3] [4] [6].…”