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A uds diagnosis method and device based on dual cpu controllers

A technology of CPU controller and diagnosis method, applied in the field of automobile diagnosis, can solve problems such as reduced efficiency, reduced reliability of UDS, and reduced real-time performance of UDS services, and achieves the effect of speeding up response and reducing interaction

Active Publication Date: 2020-12-08
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a UDS diagnosis method and device based on dual CPU controllers, which is used to solve the problem that the reliability of the existing UDS is lowered, the real-time performance of UDS services is lowered, and the ECU or the whole vehicle The problem of reduced efficiency in the production process

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  • A uds diagnosis method and device based on dual cpu controllers
  • A uds diagnosis method and device based on dual cpu controllers
  • A uds diagnosis method and device based on dual cpu controllers

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Embodiment Construction

[0044] In this patent, the dual CPUs respectively receive the UDS diagnosis service request from the host computer, and process the diagnosis service respectively according to the UDS diagnosis service request. The specific implementation will be further described below in conjunction with the accompanying drawings and embodiments.

[0045] Such as figure 1 As shown, the embodiment of the present invention provides a UDS diagnostic method based on dual CPU controllers, the method comprising:

[0046] Step S11, the dual CPUs respectively receive a UDS diagnostic service request from the host computer, process the diagnostic service respectively according to the UDS diagnostic service request, and each CPU corresponds to a diagnostic service protocol stack;

[0047] Step S12 , when any CPU completes its own diagnostic service protocol stack scheduling, it returns a diagnostic service feedback result to the host computer.

[0048]In this embodiment, the opposing CPU of the dual ...

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Abstract

The invention provides a UDS diagnosis method and a device based on a double-CPU controller, and the method comprises the steps that double CPUs receive UDS diagnosis service requests from an upper computer, respectively process diagnosis services according to the UDS diagnosis service requests, and each CPU is correspondingly provided with a diagnosis service protocol stack; and any CPU completesservice state scheduling of the diagnosis service protocol stack of the CPU and returns a diagnosis service feedback result to the upper computer. According to the invention, the problems that the UDS diagnosis efficiency is reduced, the real-time performance of the UDS service is reduced and the efficiency is reduced in the ECU and whole vehicle production process due to the fact that the existing UDS diagnosis based on the double-CPU controller is limited by the double-CPU communication stability are solved.

Description

technical field [0001] The invention relates to the technical field of automobile diagnosis, in particular to a UDS diagnosis method and device based on dual CPU controllers. Background technique [0002] Dual CPU controller with MCU (control chip) of CAN channel and SOC (system chip) of Ethernet channel has become a mainstream trend and is gradually applied to major automobile manufacturers as a way to realize high-speed communication of automobiles On the ECU, such as the central gateway of Ethernet, the Ethernet vehicle telematics control system (hereinafter referred to as EthernetTBOX). Among them, the diagnostic software supporting dual-channel UDS (Unified Diagnostic Services) is one of the key technologies, providing necessary support for ECU after-sales diagnosis, ECU troubleshooting, and vehicle production. [0003] In the Ethernet TBOX software, there are two diagnostic command channels of UDS: one is the CAN channel from the MCU, and the other is the Ethernet cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
CPCG05B23/0218
Inventor 周鹏陈聪传涂孝军唐启富吴天来王荣明
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD