A MONITORING UNIT AS WELL AS METHOD FOR PREDICTING ABNORMAL OPERATION OF TIME-TRIGGERED COMPUTER SYSTEMS

摘要

The invention relates to a time-triggered computer system (800) that involves [i] a Main Processor (801) that has been designed to run one or more tasks according to one or more predetermined task schedules, only one of which, the “active task schedule”, will be active at any point in time; [ii] a Monitor Processor (802) that has been designed to determine whether the Main Processor (801) is about to execute a task that is not in accordance with the active task schedule; [iii] a Communication Link (803) for passing information about future task executions between the Main Processor (801) and the Monitor Processor (802); and [iv] a Control Mechanism (comprising a System Control output (805), and/or a Communication Link B (806), and/or a Reset Link (807)) by means of which the Monitor Processor can halt or reset the Main Processor and take other corrective actions involving devices to which the computer system is connected, if the Monitor Processor determines that the Main Processor is about to execute a task that is not in accordance with the active schedule.

主权项

1. A time-triggered computer system comprising:
a Main Processor adapted to execute one or more tasks according to one or more predetermined task schedules, only one of which, an active task schedule, will be active at any point in time; a Monitor Processor adapted to determine whether the Main Processor is about to execute a task that is not in accordance with the active task schedule; a Communication Link for passing information about future task executions between the Main Processor and the Monitor Processor; and a Control Mechanism adapted to at least one of halt and reset the Main Processor, and at least one of control and disable connected devices controlled by the Main Processor, when the Monitor Processor determines that the Main Processor is about to execute the task that is not in accordance with the active task schedule.