Provided is an onboard electronic control unit. A CPU regularly performs a memory check and, if a determination has been made that there is an error in the memory content, writes the number of times an error has been determined to an error count storage unit, and resets itself. Immediately after the CPU has been reset and before the first memory check is performed, an error determination unit determines whether or not the error count stored in the error count storage unit is at least an error determination threshold. If the error count is at least the error determination threshold, an error response unit causes the CPU to execute a specific error response program, out of the programs in the memory.

Onboard electronic control unit

A semiconductor circuit for an electronic control device for a system in a motor vehicle, wherein the system is not mechanically intrinsically safe, includes a functional computer (FR), at least one monitoring unit (MU) and a monitoring computer that are each physically independent of each other. A full or a restricted function of the semiconductor circuit is ensured by the functional computer (FR) in the event of a failure of the monitoring computer (UR) and vice versa. The semiconductor circuit is monitored according to a monitoring method.

Semiconductor circuit and method in a safety concept for use in a motor vehicle

A monitoring computer for monitoring a processor, on which processor a computing element is executed. The computing element essentially includes three program modules by which the performance of the motor vehicle is influenced. The processor includes a functional computer and a monitoring computer that is physically independent of the functional computer, wherein the monitoring computer includes two monitoring units that are independent of each other.

Monitoring computer in a control device

A controller for an electric vehicle having an electric motor is provided. The controller includes a motor control processor (MCP) module configured to control torque output of the electric motor. The controller also includes a first main processor monitor (MPM) module and a second MPM module. The first MPM module and the second MPM module are configured to separately determine a state of health of the MCP module, and to generate a first fault signal and a second fault signal, respectively, after determining the MCP module is not functional. The controller further includes a voting control module configured to receive at least one of the first fault signal from the first MPM module, and the second fault signal from the second MPM module, and to generate an override command when it receives both the first fault signal and the second fault signal. The override command overrides the MCP module.

Controller for an electric motor, and a method thereof

A safety system monitors faults in an embedded control system. The embedded control system is modeled to produce one or more model check values by calculating how many clock cycles will pass between an initialization time point and at least one event time point for a specific event. The initialization time point is a certain point in an initialization function of a scheduler in the embedded control system. The at least one event time point is an expected number of clock cycles to pass before a specific event occurs. In operation, the embedded control system is initialized, a current clock cycle counter value is retrieved at a certain point in the initialization, and either an occurrence or an absence of an occurrence of a scheduled event is recognized. A current clock cycle value is recorded upon the recognition, and a mathematic check value is produced from the clock cycle value stored at the certain point in the initialization and the clock cycle value recorded upon the recognition. Subsequently, the model check value is compared to the mathematic check value, and action is taken based on the comparison.

Safe scheduler for finite state deterministic application

A monitoring process for monitoring a computing element in a control device of a motor vehicle, wherein the computing element includes three program modules by which the performance of the motor vehicle is influenced. The computing element is executed on a processor, wherein the processor includes a functional computer and a monitoring computer that is physically independent of the functional computer, and the monitoring computer includes two monitoring units that are independent of each other.

Monitoring concept in a control device

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Monitoring concept in a control device

Monitoring computer in a control device