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AssigneeRobert Bosch GmbH
InventorsGeorg Haubner, Jurgen Wesemeyer, Hans Schrumpf, Jorg Birmelin, Manfred Schwab, Gunter Honig, Uwe Kiencke, Alfred Schulz, Werner Meier
Estimating the term…
To supervise a program controlled device which is subject to stray noise or disturbance pulses, particularly microprocessor controlled automotive vehicle electronic systems, a timing circuit is provided responsive to check pulses added to the program and defining a timing interval, the monitoring system distinguishing between disturbance pulses and static defects by supervising the control pulses and, upon failure of the control pulses, generating a program restart or interrupt signal, respectively, which both initiate a new start of the program cycle or, respectively, define a timing interval which, upon failure to sense further control pulses, initiates energization of an emergency switching system. Continuous failure to receive control pulses also can initiate the emergency switching system. To permit start-up, and before control pulses are obtained, a time delay circuit is provided which disables the monitoring system upon switching ON of the program controlled device at least for the time period of one check pulse cycle.
Monitoring system for a program controlled device for operating systems in an automotive vehicle, the automotive vehicle having electronically program controlled devices which repetitively, cyclically control and cause operating events for the engine of the vehicle including at least one of ignition and fuel injection, in which the program control is effected by electrical program signals having characteristics defining the program, and said signals are subject to spurious noise and erroneous disturbance signals occurring in an automotive vehicle
Dependencies are inferred from the claim text.