Authors: Min Soo Kang; Yong Gyu Jung; Myung Ho Kim; Kichan Ahn
Addresses: Department of Medical IT and Marketing, Eulji University, 212 Yangji-dong, Sujeong-gu, Seongnam-si, Gyeonggi-do, South Korea ' Department of Medical IT and Marketing, Eulji University, 212 Yangji-dong, Sujeong-gu, Seongnam-si, Gyeonggi-do, South Korea ' Department of Architecture equipment, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do, South Korea ' Department of Bioinformatics, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, South Korea
Abstract: In the present paper, and a fail-safe system capable of operating in safety side even upon occurrence of failures was designed where internet of things (IoTs)-based sensor nodes allowed fault tolerance based on hardware redundancy. The fault tolerance system masked faults with the application of triple modular redundancy (TMR) system and enabled fail-safe control by using a comparator for fault detection and self-diagnostics. The fault-tolerant sensor nodes presented in the paper were installed outdoors where disasters/calamities could occur and could execute the specified algorithms even upon occurrence of faults allowing the use in areas with poor environments and particularly the application to plant facilities for management of oil and gas pipelines, etc. as the high reliability could be guaranteed.
Keywords: sensor nodes; safety; reliability; IoT; internet of things; fault tolerance; fail-safe systems; hardware redundancy; fault detection; self-diagnostics.
International Journal of Security and Networks, 2014 Vol.9 No.4, pp.190 - 196
Received: 19 Feb 2014
Accepted: 26 Feb 2014
Published online: 04 Dec 2014 *