CAN/CAN intelligent het bridge for automobile electronic information integrated control system

An information integration and control system technology, applied in transmission systems, electrical components, bus networks, etc., can solve problems that do not involve intelligent control of message information filtering, achieve enhanced intelligent collaborative control capabilities, reduce the probability of misoperation, and reduce labor The effect of intensity

Inactive Publication Date: 2007-08-29
WUHAN UNIV OF TECH
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  • Abstract
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Problems solved by technology

The disadvantage of the above documents is that there is no information filtering, forwarding and intelligent control of the system involving different communication rates

Method used

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  • CAN/CAN intelligent het bridge for automobile electronic information integrated control system
  • CAN/CAN intelligent het bridge for automobile electronic information integrated control system
  • CAN/CAN intelligent het bridge for automobile electronic information integrated control system

Examples

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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] The present invention is a hardware and software system (see Fig. 1) with ARM microcontroller LPC2194 as the core. LPC2194 integrates 4 CAN controllers inside, among which the two CAN controllers CANH_1 and CANL_1 complete the message filtering and forwarding functions of different CAN subnets, which are the message forwarding modules of the present invention; the two CAN controllers CANH_2 and CANL_2 complete the execution The function of the control rule is the intelligent control module of the present invention. For the interface circuit part of CAN, the present invention has adopted the TJA1050 high-speed CAN bus transceiver of PHILIPS company as the physical layer interface chip of CAN bus, and adopted the CAN data link layer protocol controller contained in LPC2194 as the CAN controller. In order to avoid electromagnetic interfer...

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Abstract

The CAN/CAN intelligent bridge includes microcontroller, photoelectric coupler, CAN transceiver, CAN interface and support circuit. Characters are that the bridge also includes four CAN interfaces; the two CAN interfaces are connected to a high speed CAN sub network, and a low speed CAN sub network respectively to implement filtering and forwarding message information between different sun networks; the other two CAN interfaces are also connected to a high speed CAN sub network, and a low speed CAN sub network respectively to receive message information related to control rules from two sub networks. Useful effects are: (1) sharing information between ECUs in different CAN sub network; (2) enhancing intelligent synergic control capability of each ECU; (3) raised safety, comfortability, and environmental protection performance of cars.

Description

technical field [0001] The invention belongs to an intelligent network bridge, in particular to a CAN / CAN intelligent network bridge in an automobile electronic information integrated control system. Background technique [0002] The rapid development of electronic technology and its wide application in automobiles make automobiles more and more electronic, especially after the ECU (Electronic Control Unit, Electronic Control Unit) with a microcontroller as the core enters the automotive field, it brings new benefits to automobiles. An epochal change has come. With the improvement of people's requirements for the power and comfort of automobiles, the number of electronic control units and electronic control devices in automobiles is also increasing. The traditional point-to-point communication method can no longer meet the needs of distributed real-time control of automobiles. The geometric growth of the number of wires due to the continuous increase of electronic equipment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40H04L12/46H04L29/06H04L12/28B60R25/00B60R25/40
Inventor 李刚炎胡剑周建华于翔鹏
Owner WUHAN UNIV OF TECH
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