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Electricity-saving method of vehicle-mounted CAN bus network

A technology of CAN bus and network, which is applied to the power saving of vehicle CAN bus network, and the field of vehicle CAN bus network, which can solve the problems of the car not starting, wasting energy, power supply energy exhaustion, etc., and achieve the effect of maintaining stability

Active Publication Date: 2010-05-05
南通迈程汽车技术有限公司
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  • Application Information

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Problems solved by technology

In the traditional way, power is supplied to these electrical devices regardless of whether they are needed or not. Although the energy consumption of non-working devices is very low, a considerable amount of energy must be wasted for a long time
[0003] Due to the limited power of the battery on the car, if the car is not used for a long time, the power supply energy will be exhausted and the car will not start.

Method used

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  • Electricity-saving method of vehicle-mounted CAN bus network
  • Electricity-saving method of vehicle-mounted CAN bus network
  • Electricity-saving method of vehicle-mounted CAN bus network

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Embodiment Construction

[0020] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0021] The power-saving method in this application is only valid for non-ignition controller modules, and the communication mode between non-ignition controller modules is CAN bus. In this embodiment, the CAN bus adopts high-speed CAN bus, and its communication rate is 500kbit / s.

[0022] The CAN bus network has a master controller module as a master node and a slave controller module as a slave node. In this embodiment, the vehicle body controller module in the CAN bus network is used as the master node of the CAN network, and the instrument cluster controller module is a slave node, and more controller modules can be added for power-saving management. These controller modules all include A transceiver and a controller, w...

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Abstract

The invention provides an electricity-saving method of vehicle-mounted CAN bus network, belonging to the electronic technical field. The method solves the problem that electric energy is transported to existing automobile electric equipment no matter the equipment works or not to cause electric energy waste. The electricity-saving method of the vehicle-mounted CAN bus network is as follows: a CAN bus is provided with controller modules used as nodes, and the method can lead the control modules to enter a low power consumption mode in the case of no operational requirement under program setting, can switch each controller module among various states, thereby achieving the electricity-saving purpose when the controller modules are in the low power consumption state in the case of no tasks required to be processed.

Description

technical field [0001] The invention belongs to the field of electronic technology, and relates to a vehicle-mounted CAN bus network, in particular to a power-saving method for the vehicle-mounted CAN bus network. Background technique [0002] With the rapid development of automotive electronics, the number of electrical equipment and controller modules in the car continues to increase, even reaching hundreds of advanced cars. The power supply system of the traditional automotive CAN bus control module and the power supply input of other power devices are directly supplied by the automotive power supply. In the traditional way, power is supplied to these electrical devices regardless of whether they are needed or not. Although the energy consumption of non-working devices is very low, a considerable amount of energy must be wasted for a long time. [0003] Because the power of the storage battery on the car is limited, if the car is not used for a long time, the power suppl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/023H04L12/40
Inventor 李书福杨健赵福全蔡伟杰李亚南熊想涛王建磊郑士岑丁武俊朱祝阳陈文强由毅
Owner 南通迈程汽车技术有限公司
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