Vehicle network with a control device entering sleep mode when the vehicle velocity is above predetermined threshold and a coprocessor performing selected functions during the sleep mode

摘要

A control device (21) for a vehicle network, having a microprocessor (30) and a transceiver (40). The control device (21) can be switched off or switched to a sleep mode during a previously defined state or event during the operation of the motor vehicle and/or the control device (21) can be awakened from the sleep mode during a previously defined state or event during the operation. The disclosed embodiments also relate to a method for operating a vehicle network.

主权项

1. A control device for a vehicle network that includes at least one bus system, the control device comprising:
a microprocessor; a transceiver; and a module for detecting network messages including vehicle velocity data, the network messages being transmitted on at least one bus system, the module controlling at least one of switching on or off of a sleep mode for the control device based on content of the detected network messages indicating a previously defined state or event during the operation of the motor vehicle, wherein the control device is switched off or into a sleep mode based on detection of the previously defined state or event during the operation of the motor vehicle, wherein the previously defined state is the vehicle velocity V, wherein if V>Vlimit, the control device is switched off or switched into the sleep mode, wherein the module is integrated into the transceiver or into the microprocessor or is embodied as a separate component, wherein the module is integrated into the microprocessor and a coprocessor function of the microprocessor is executed by the module if a sleep mode of the microprocessor is activated, and wherein, in the coprocessor function, the module carries out a transmitting operation or a receiving operation or an evaluation of reception messages or a changeover of operating mode.