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Vehicle control local area network (LAN) CAN network

A vehicle control, local area network technology, applied in the direction of network interconnection, data exchange through path configuration, electrical components, etc., to achieve the effect of improving signal utilization

Active Publication Date: 2012-06-13
BEIQI FOTON MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Diesel vehicles that use ECMs that support the SAE J1939 protocol have problems interconnecting with other systems on the vehicle that support the ISO 11898 protocol.

Method used

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  • Vehicle control local area network (LAN) CAN network
  • Vehicle control local area network (LAN) CAN network
  • Vehicle control local area network (LAN) CAN network

Examples

Experimental program
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Embodiment Construction

[0010] The vehicle control local area network CAN network provided by the present invention includes: a first CAN network based on the ISO 11898 protocol; a second CAN network based on the SAE J1939 protocol; and a gateway connected between the first CAN network and the second CAN network, the gateway Convert the message received from the first CAN network into a message conforming to the SAE J1939 protocol and send it to the second CAN network, and convert the message received from the second CAN network into a message conforming to the ISO 11898 protocol and send it to First CAN network.

[0011] ISO 11898 is a CAN high-speed communication standard with a communication speed of 125kbps to 1Mbps. The first CAN network in the vehicle CAN network provided by the present invention may be a 500kbps network supporting the ISO 11898 protocol. The specific format of the data message unit of the ISO 11898 protocol is shown in Table 1. Usually many ECUs produced by many passenger ca...

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PUM

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Abstract

The invention provides a vehicle control local area network (LAN) CAN network which comprises a first CAN network based on ISO 11898 protocol, a second CAN network based on SAE J 1939 protocol, and a gateway connected between the first CAN network and the second CAN network, wherein the gateway is used for transforming massage received from the first CAN network into massage which is in accordance with the SAE J 1939 protocol, and sending the transformed massage into the second CAN network; and the gateway is also used for transforming massage received from the second CAN network into massagewhich is in accordance with the ISO 11898 protocol, and sending the transformed massage into the first CAN network. The vehicle CAN network can realize interconnection among different CAN networks and information sharing and exchange among the different CAN networks, and improves the signal utilization rate.

Description

technical field [0001] The present invention relates to the field of vehicle control area networks (CAN). Background technique [0002] With the improvement of vehicle electronization and automation, the number of electronic control units (ECUs) on vehicles is increasing day by day. The control area network (CAN) network and CAN-based vehicle network communication protocol realize the information sharing between different ECUs and improve the utilization rate of signals. CAN network technology is of great significance to the development of automobile technology. [0003] With the wide application and popularization of CAN network, the standardization of its communication format is required. The ISO 11898 protocol is an international standard for road transportation tools-data information exchange-high-speed communication LAN issued by ISO in 1993. The SAE J1939 protocol is a heavy-duty truck and bus network communication protocol formulated by the Society of Automotive Eng...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/46H04L29/06H04L29/08
Inventor 赵华赵澎陈晓俊史攀冀俊明
Owner BEIQI FOTON MOTOR CO LTD
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