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Establishment device and method of vehicle electrical engineering and CAN communication connection

A CAN communication and connection establishment technology, applied in vehicle components, transportation and packaging, circuits or fluid pipelines, etc., can solve compatibility problems, fail to solve CAN communication compatibility problems, and cannot perform normal CAN communication, etc. Achieve the effect of saving wire harnesses, line layout and connection flexibility, and compatibility guarantee

Active Publication Date: 2020-02-07
BEIJING JINWANAN AUTOMOBILE ELECTRONICS TECH RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Normal CAN communication cannot be performed between nodes using transceivers with different physical layer levels, which causes a great compatibility problem for CAN communication between tractors and trailers and trailer trains
[0006] In addition, Wabco in CN109479186A discloses a wireless network construction method between the tractor and the trailer, but still relies on the normal connection of the CAN bus between the tractor and the trailer to establish the connection of the wireless network, and does not solve the problem of the tractor. CAN communication compatibility issues with trailers and trailer trains

Method used

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  • Establishment device and method of vehicle electrical engineering and CAN communication connection
  • Establishment device and method of vehicle electrical engineering and CAN communication connection
  • Establishment device and method of vehicle electrical engineering and CAN communication connection

Examples

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Embodiment 1

[0093] This embodiment uses a typical "tractor + semi-trailer" compatible with 24V and 5V CAN communication as an example to describe the core idea of ​​the present invention, but it does not mean that the present invention is limited to the described models and application scenarios. A skilled person can easily apply the core idea of ​​the present invention to other various vehicle models and scenarios according to the description herein and perform corresponding modification.

[0094] figure 2The combination of a tractor and a trailer train is shown, and components and interfaces not related to the core idea of ​​the present invention are not shown. The tractor 1 is equipped with a tractor electronic brake unit (EBS) 10, and the second socket is an ISO 7638 socket 1006 from the second socket of the tractor electronic brake unit (EBS) 10, and the electrical interface is directly drawn to the tractor The connector between 1 and the first trailer 2, the connector is ISO 7638 ...

Embodiment 2

[0108] The difference between this embodiment and Embodiment 1 is that the first trailer 2 only supports 24V CAN communication, the third trailer 4 only supports 5V CAN communication, and the tractor 1 and the second trailer 3 support both 24V and 5V CAN communication, then After the CAN communication connection is established according to the above process and method, the final tractor 1 and the first trailer 2 will use 24V CAN communication, the first trailer 2 and the second trailer 3 will use 24V CAN communication, and the second trailer 3 will communicate with the third trailer. 5V CAN communication between the trailers 4 .

Embodiment 3

[0110] The difference between this embodiment and Embodiment 1 lies in that in the process of establishing communication, the CAN_L level is detected instead of the CAN_H level.

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Abstract

The invention relates to the field of vehicle electrical connection and communication, and discloses an establishment device and method of vehicle electrical engineering and CAN communication connection, The establishment device comprises a tractor braking unit and a trailer electronic braking unit, wherein the tractor electronic braking unit and the trailer electronic braking unit are electrically connected through an ISO7638 connector, and both the tractor electronic braking unit and the trailer electronic braking unit are provided with a plurality of CAN transceivers, so that CAN communication between adjacent vehicles can be achieved. According to the establishment device and method of the vehicle electrical engineering and CAN communication connection, due to the fact that the tractorelectronic braking unit and the trailer electronic braking unit integrate with functions of the electrical distribution and a gateway, a large number of wiring harnesses are saved for the whole vehicle, a special electronic unit is omitted, circuit arrangement and connection are more flexible and compact, the technical problem that normal CAN communication cannot be carried out among nodes of thetransceivers on different physical layer levels is solved, and guarantee is brought to the compatibility of the CAN communication between a tractor and a trailer and the CAN communication between thetrailer combinations.

Description

technical field [0001] The invention relates to the field of electrical connection between vehicles and CAN communication connection, in particular to a device and method for establishing vehicle electrical and CAN communication connection. Background technique [0002] The electrical connection between the tractor equipped with electronic braking system (EBS) and the trailer and the trailer train adopts the standard connector complying with ISO 7638. There are 7 pins in the connector, which are battery positive, ignition switch positive, power ground, and alarm indication. Lamp positive, alarm indicator ground, CAN_H and CAN_L. Among them, CAN_H and CAN_L are buses for transmitting information between tractors, trailers, and trailer trains. They generally follow the ISO 11992 standard, which defines the physical layer signal standard of the CAN bus and the network node initialization, network management, and network message forwarding. specification. In the existing known...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/023
CPCB60R16/0231
Inventor 宋小毅傅直全付德春贺迎春张磊
Owner BEIJING JINWANAN AUTOMOBILE ELECTRONICS TECH RES