Patent ID: 6410993
Filing Date: 2002-06-25
Classification: B60G,B60T,B60W

Abstract:
A circuit arrangement for use with an automotive vehicle control system for controlling safety-critical control operations, said circuit arrangement processing input data from the control system and generating an error identification signal when a discrepancy occurs, said circuit arrangement comprising:first and second microprocessor systems for redundantly processing input signals and for generating an error identification signal in the event of a discrepancy between the redundantly processed input signals; and means for transitioning the control system to an emergency operation mode when a discrepancy occurs in one of said first and second microprocessor systems, wherein said transitioning means comprises a first commutator for transitioning the control system from said first microprocessor system to said second microprocessor system when the discrepancy occurs in said first microprocessor system, and a second commutator for transitioning the control system from said second microprocessor system to said first microprocessor system when the discrepancy occurs in said second microprocessor system.