Relay logic technology application for rolling stock safety/mission critical circuits: best practises and new technologies

Despite the worldwide trend to discard traditional technologies in favour of solutions that use smaller, smarter, reconfigurable technologies and services, there are situations where the “old” still has plenty to offer. Relay technology still has the ability to deliver safe, robust and reliable solutions for situations where safety critical and/or mission critical requirements are not negotiable. Safety and mission critical functions require solutions that feature high integrity and high reliability/availability. They also need, when they fail, to adopt or configure into an operating state that maintains the system’s integrity and overall safety. Relay circuits have a history of being able to satisfy these basic needs. Other technologies such as microprocessors or similar, have to include other specialist processes to ensure system safety requirements are achieved. Relays have a long history with known modes of operation and are quite well observed and understood. This paper reviews the application of a relay based solution to create a modern train that is safe and reliable to meet the ever-increasing demands of safety standards and legislation, and the ever-increasing system availability targets demanded.

Media Info

  • Pagination: 9p. ; PDF
  • Monograph Title: Rail - the core of integrated transport: CORE 2012: conference on railway engineering, 7-10 September 2012, Perth, Western Australia

Subject/Index Terms

Filing Info

  • Accession Number: 01532186
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Jul 29 2014 12:00PM