ECU conforming to AUSTOSAR architecture and sleep/wake-up management method of ECU

Abstract

The invention discloses an ECU conforming to an AUSTOSAR framework and a sleep / wake-up management method of the ECU. The ECU includes a software-implemented virtual bus transceiver driver module, a partial network management module, and a mode request collection module. The sleep / wake-up management method of the ECU comprises the steps that a virtual bus transceiver driving module receives a message on a bus and caches the message when judging that the message is related to the ECU; when determining that the cached message has the mode change mark and the cached message is not overtime, a partof network management modules send a first mode change request to a mode request collection module; and the mode request collection module determines whether to send a sleep or wake-up mode switchingcommand to the related module at least according to the first mode change request and a second mode change request sent from the application layer, so that the ECU enters sleep or wakes up. Accordingto the ECU conforming to the AUSTOSAR architecture and the sleep / wake-up management method of the ECU, the functions of partial network nodes (PNC) can be achieved, and the ECU and the sleep / wake-upmanagement method have the advantages of being flexible to achieve, low in cost and the like.

Description

technical field [0001] The invention relates to automotive electronics, in particular to an ECU conforming to the AUSTOSAR framework and a sleep / wake management method thereof. Background technique [0002] At present, a plurality of different electronic control units (Electronic Control Unit, ECU) are integrated in the automobile to realize different functions. These ECUs are connected to each other through a bus (such as CAN bus) to form one or more networks to realize mutual communication. Each ECU constitutes a node in the network. [0003] In order to realize the quiescent current control of the whole vehicle, the car introduces network management to control each node to respond to wake-up synchronously and synchronize a reasonable sleep strategy to minimize the quiescent current. Taking the CAN network management under the AUTOSAR architecture as an example, the realization principle is: in the sleep state of the CAN bus, the CAN transceiver in the CAN node can be wo...

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Problems solved by technology

This implementation method has the following disadvantages: (1) If the hardware design uses a CAN transceiver that does not support the PNC function, and when the PNC function needs to be added later, it must be replaced with a CAN transceiver that supports the PNC function. R&D and testing require a long period; (2) Chips that support PNC functions are more expensive than chips that do not support PNC functions, which leads to higher BOM costs

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