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Power controller area network (CAN) control method

A network control and power technology, which is applied in the direction of bus network, data exchange network, data exchange through path configuration, etc., can solve the problems of increasing system complexity, inability to perform effective monitoring and management, etc., and achieve network information sharing, The effect of reducing power consumption

Active Publication Date: 2012-07-04
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Some OEMs will apply the network management method of the body CAN bus to the power CAN bus, which increases the complexity of the system and cannot effectively monitor and manage when errors occur

Method used

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  • Power controller area network (CAN) control method
  • Power controller area network (CAN) control method
  • Power controller area network (CAN) control method

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Embodiment Construction

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0020] see figure 1 , is a topology diagram of the power CAN network system provided by the embodiment of the present invention.

[0021] The power CAN network system includes EMS (Engine Manegement System, engine management system), DLC (Data Link Control, data link control), ESP (traction control system), TCM (automatic transmission computer box), EPS (Electronic Power Steering, Electric power steering system), SAS (Safety Alarm System, safety warning system), B...

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Abstract

The invention discloses a power controller area network (CAN) control method, which comprises that: an electronic control unit (ECU) enters a sleep mode to stop bus communication and make a power supply of the ECU enter a power saving state, and if requiring network communication, the ECU in the sleep mode is switched to a network mode; in the network mode, the ECU receives or transmits a networkmanagement message, starts a timer Ttimeout, and is switched to a ready-to-sleep mode in the timeout of the timer Ttimeout; and in the ready-to-sleep mode, the bus communication is stopped, the ECU starts the timer TWBS, and during the timing of the timer TWBS, the ECU is switched to the network mode if requiring the network communication, otherwise is switched to the sleep mode in the timeout ofthe timer TWBS. The embodiment of the invention can realize the ordered communication of a power CAN under various working conditions and reduce power consumption.

Description

technical field [0001] The invention relates to the technical field of automotive electronics, in particular to a power CAN network control method. Background technique [0002] The rapid development of the information society has made automotive electronics and networking an irreversible direction for automotive development. The sign that automobiles enter the era of electronic control is the application of ECU (Electric Control Unit, electronic control unit). With the increasing number of ECUs in automobiles, each ECU needs to exchange information with each other, so the Internet used in automobile control systems was born. Among them, the CAN protocol is a field bus widely used in automobiles, and its good real-time performance, reliability, and economy can meet the needs of the underlying communication of the automobile network. With the increasing application of ECUs on complex components such as engines and ABS, the design requirements of ECUs have become extremely c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/40
Inventor 冉光伟黄少堂
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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