The Integration of On-Line Monitoring and Reconfiguration Functions into a Safety Critical Automotive Electronic Control Unit

Authors:
C. Jeffrey;R. Cutajar;A. Richardson;S. Prosser;M. Lickess;S. Riches
Affiliations:
Centre for Microsystems Research, Engineering Department, Lancaster University, Lancaster, UK LA1 4YR;Centre for Microsystems Research, Engineering Department, Lancaster University, Lancaster, UK LA1 4YR;Centre for Microsystems Research, Engineering Department, Lancaster University, Lancaster, UK LA1 4YR;TRW Automotive, Technical Centre, Solihull, UK B90 4GW;TRW Automotive, Technical Centre, Solihull, UK B90 4GW;Micro Circuit Engineering, Newmarket, UK CB8 0AU
Venue:
Journal of Electronic Testing: Theory and Applications
Year:
2005

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Abstract

This paper presents an innovative application of IEEE1149.4 and the Integrated Diagnostic Reconfiguration (IDR) method to an Automotive Electronic Control Unit implemented as a fully-integrated mixed-signal system. The IEEE1149.4 test structure has been embedded and used on-line for interconnect monitoring and signal analysis. This provides higher resolution failure diagnostics enabling localised fault compensation. A novel On-Line Monitoring architecture is presented, that supports real-time testing of the critical circuit nodes. The paper concludes that fault tolerance can be integrated into mixed-signal electronic systems to handle key failure modes.