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Local dormancy/wake-up method and system of CAN bus

A CAN bus and partial technology, applied in the field of automobile network management, can solve the problem of large energy consumption of automobiles

Inactive Publication Date: 2019-01-04
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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Problems solved by technology

[0004] The invention provides a method and system for partial dormancy and wake-up of the CAN bus, which solves the problem that the existing CAN bus management adopts synchronous dormancy and wake-up, and the problem of large energy consumption of the vehicle due to network dormancy and wake-up when the vehicle is parked can be reduced. The energy consumption of the battery improves the intelligence of the vehicle electronics

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  • Local dormancy/wake-up method and system of CAN bus
  • Local dormancy/wake-up method and system of CAN bus
  • Local dormancy/wake-up method and system of CAN bus

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Embodiment Construction

[0035] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.

[0036] Aiming at the problem that various electronic controllers of automobiles cannot perform partial sleep or wake-up, the present invention provides a method and system for partial sleep wake-up of the CAN bus. The content is in one-to-one correspondence with the number identifier, and at the same time, the master control node is set, and the master control node controls the wake-up or sleep of the nodes related to the operation content according to the network management message. It solves the problem that the current CAN bus management adopts synchronous sleep and wake-up, which easily causes large energy consumption of the vehicle due to network sleep and wake-up when the vehicle is parked. It can reduce th...

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Abstract

The invention provides a local dormancy / wake-up method and system of a CAN bus. The method comprises that number identifiers are arranged in a CAN network management message format and set according to operation of the CAN bus, so that the number identifiers are in one to one correspondence with operation contents; correspondence between the operation content and nodes needed for realization of the operation content is set, and a master control node is arranged according to the related nodes; and in the network wake-up or dormancy process, the corresponding master control node is determined according to the number identifier in a CAN network management message, the master control node sends the CAN network management message to the related nodes so that the nodes are waken up or dormant. Thus, energy consumption of the whole storage battery can be reduced, and the whole vehicle can be more intelligent.

Description

technical field [0001] The invention relates to the technical field of automobile network management, in particular to a method and system for waking up from partial sleep of a CAN bus. Background technique [0002] At present, CAN bus network management is widely used in the whole vehicle. With the continuous upgrading of automobile technology, the number of on-board ECUs continues to increase, which makes the static power consumption of the vehicle continue to increase. In order to reduce the static power consumption of the vehicle, it is necessary to quickly access the network. Dormant state to prevent the vehicle from running out of power. At present, the CAN bus mainly uses the OSEK network management strategy. The biggest features of this strategy are: 1. All network management nodes are "bound" with chain rules to sleep and wake up; 2. Use synchronous wake-up and synchronous sleep to control all network management The dormancy wake-up function of the node ensures tha...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/02
Inventor 龚存昊王玮杨法松刘晓军陈龙高政
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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