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A UDS response mediation system and method for dual redundant ECUs

A dual-redundant, positive-response technology, applied in the transmission system, digital transmission system, comprehensive factory control, etc., can solve the problem of single redundant ECU diagnosis or debugging response

Active Publication Date: 2022-05-17
WUHAN KOTEI INFORMATICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the technical problems existing in the prior art, the present invention provides a UDS response mediation system and method for dual redundant ECUs, which solves the problem in the prior art that the diagnosis or debugging response of the dual redundant ECU received by the tester is single

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  • A UDS response mediation system and method for dual redundant ECUs
  • A UDS response mediation system and method for dual redundant ECUs
  • A UDS response mediation system and method for dual redundant ECUs

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Embodiment 1

[0040] Embodiment 1 provided by the present invention is an embodiment of a UDS response mediation system of a dual redundant ECU provided by the present invention, such as figure 2 Shown is an interactive schematic diagram of an embodiment of a UDS response mediation system of a dual redundant ECU provided by the present invention, combined with figure 1 and figure 2 It can be seen that the response mediation system includes: CPU1, CPU2 and the upper computer TOOL of the diagnostic instrument.

[0041] There are communication links between CPU1 and the upper computer of the diagnostic instrument and between CPU1 and CPU2; CPU1 communicates with the upper computer of the diagnostic instrument through the original CAN communication, and tells the upper computer of the diagnostic instrument that it is in command processing.

[0042] Preferably, the communication link between CPU1 and CPU2 is a UART communication channel newly created by CPU1.

[0043] After CPU1 receives the...

Embodiment 2

[0056] Embodiment 2 provided by the present invention is an embodiment of a UDS response mediation method of a dual redundant ECU provided by the present invention, such as image 3 Shown is the flow chart of the embodiment of the UDS response mediation method of a kind of dual redundant ECU provided by the present invention, by image 3 It can be seen that the method includes:

[0057] Step 1: Establish communication links between CPU1 and the upper computer of the diagnostic instrument and between CPU1 and CPU2; CPU1 maintains communication with the upper computer of the diagnostic instrument, and tells the upper computer of the diagnostic instrument that it is in command processing.

[0058] Step 2: After CPU1 receives the diagnosis or debugging command sent by the upper computer of the diagnostic instrument, it sends the diagnosis or debugging command to CPU2 through the communication link.

[0059] Step 3, CPU2 feeds back its response result to CPU1 through the communica...

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Abstract

The present invention relates to a UDS response mediation system and method of dual redundant ECUs. Communication links are set between CPU1 and the upper computer of the diagnostic instrument and between CPU1 and CPU2; CPU1 receives a diagnosis or debugging command sent by the upper computer of the diagnostic instrument Afterwards, the diagnostic or debugging command is sent to CPU2 through the communication link; CPU2 feeds back its response result to CPU1 through the communication link; feedback from the computer; the system analyzes and integrates the responses of the two CPUs, obtains a final response, and then sends it out; it has relatively good backward compatibility, and it presents a complete whole to the user, which realizes It not only guarantees the security of the dual-redundant system, but also has good compatibility with general tools and upper-layer applications. There is no need to make any corresponding adaptations because this ECU has become a dual-redundant ECU; through this solution, it can also be adapted The protocol of UDS has been complied with, and the status of ECU has been truly fed back.

Description

technical field [0001] The invention relates to the technical field of automotive electronics, in particular to a UDS response mediation system and method for dual redundant ECUs. Background technique [0002] In the car, there are a large number of ECUs (Electronic Control Unit, electronic control unit). During the production and maintenance phase of the car, maintenance personnel need to diagnose and maintain these ECUs. Through the CAN (Controller AreaNetwork, Controller Area Network) channel, use UDS agreement to perform this service. [0003] Among these ECUs, there is a type of ECU designed for driving safety, which may use a dual backup mechanism on the hardware, but for the entire vehicle system, they are still an electronic control unit. When using a tester, through UDS (Unified Diagnostic Services, When diagnosing or debugging this ECU through a unified diagnostic service) protocol, the response received by the tester is also single, and it cannot detect that one ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/22H04L41/0663H04L43/50
CPCH04L1/22H04L41/0663H04L43/50Y02P90/02
Inventor 程德心汤戈雷靖宇田建华闵道均
Owner WUHAN KOTEI INFORMATICS
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