DocumentCode :
2890463
Title :
An intellectual property core to detect task schedulling-related faults in RTOS-based embedded systems
Author :
Silva, Dhiego ; Bolzani, Letícia ; Vargas, Fabian
Author_Institution :
Electr. Eng. Dept., Catholic Univ. - PUCRS, Porto Alegre, Brazil
fYear :
2011
fDate :
13-15 July 2011
Firstpage :
19
Lastpage :
24
Abstract :
The use of Real-Time Operating Systems (RTOSs) became an attractive solution to simplify the design of safety-critical real-time embedded systems. Due to their stringent constraints such as battery-powered, high-speed and low-voltage operation, these systems are often subject to transient faults originated from a large spectrum of noisy sources, among them, the conducted and radiated Electromagnetic Interference (EMI). As the major consequence, the system´s reliability degrades. In this paper, we present a hardware-based intellectual property (IP) core, namely RTOS-Guardian (RTOS-G) able to monitor the RTOS´ execution in order to detect faults that corrupt the tasks´ execution flow in embedded systems based on preemptive RTOS. Experimental results based on the Plasma microprocessor IP core running different test programs that exploit several RTOS resources have been developed. During test execution, the proposed system was exposed to conducted EMI according to the international standard IEC 61.000-4-29 for voltage dips, short interruptions and voltage transients on the power supply lines of electronic systems. The obtained results demonstrate that the proposed approach is able to provide higher fault coverage and reduced fault latency when compared to the native fault detection mechanisms embedded in the kernel of the RTOS.
Keywords :
computer power supplies; electromagnetic interference; embedded systems; industrial property; microprocessor chips; operating systems (computers); safety-critical software; scheduling; software fault tolerance; EMI; IEC 61.000-4-29; RTOS-G; RTOS-Guardian; RTOS-based embedded systems; electromagnetic interference; electronic systems; fault coverage; fault latency reduction; intellectual property core; plasma microprocessor IP core; power supply lines; real-time operating systems; safety-critical real-time embedded systems; short interruptions; task scheduling-related fault detection; voltage dips; voltage transients; Benchmark testing; Circuit faults; Electromagnetic interference; Embedded systems; Fault detection; Monitoring; Real time systems; Electromagnetic Interference (EMI); Hardware-Based Approach; Intellectual Property (IP) Core; Real-Time Operating System; Reliable Embedded System;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
On-Line Testing Symposium (IOLTS), 2011 IEEE 17th International
Conference_Location :
Athens
Print_ISBN :
978-1-4577-1053-7
Type :
conf
DOI :
10.1109/IOLTS.2011.5993805
Filename :
5993805
Link To Document :
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