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Vehicle multi-controller software upgrading system and method based on USB communication and vehicle

A software upgrade and multi-controller technology, applied in software deployment, instrumentation, electrical digital data processing, etc., can solve problems such as high cost, system principle and complex composition, and achieve the effects of improving efficiency, simple upgrade method, and low cost

Active Publication Date: 2021-01-12
DONGFENG MOTOR CORP HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the system architecture of this USB master-slave device needs to add a separate USB hub, the system principle and composition are more complicated, and the cost is higher.

Method used

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  • Vehicle multi-controller software upgrading system and method based on USB communication and vehicle
  • Vehicle multi-controller software upgrading system and method based on USB communication and vehicle
  • Vehicle multi-controller software upgrading system and method based on USB communication and vehicle

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Embodiment Construction

[0018] pass below Figure 2 ~ Figure 3 As well as listing some optional embodiments of the present invention, the technical solutions (including preferred technical solutions) of the present invention are further described in detail. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0019] Aiming at the problem of background technology, this patent designs a USB hub, which divides one USB port into multiple USB ports, and there is no processor, no USB communication protocol and software in the USB hub, and the system configuration and principle are as follows: figure 2 . One USB port of the USB hub is connected to the USB master device, and the remaining USB ports are respectively connected to the USB slave...

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Abstract

The invention discloses a vehicle multi-controller software upgrading system and method based on USB communication and a vehicle. A USB concentrator is designed in the patent, and one USB port is divided into a plurality of USB ports used for connecting a USB master device and a plurality of USB slave devices. When a certain USB slave device needs to be subjected to software upgrading, the USB master device controls the USB port of the USB slave device to be in an enabled state and the USB ports of the other USB slave devices to be in a disabled state through the CAN bus, so that a USB communication channel between the USB master device and the USB slave devices is established, and transmission and downloading of upgrading software of the USB slave devices are completed; and upgrading thecontroller software after the upgrading software is downloaded. The device is simple in principle and structure and does not consume extra electric energy of a vehicle; when the USB master device andthe USB slave device communicate with each other, data delay cannot be generated, the transmission rate of the USB master device can be fully utilized, and the software upgrading efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of automotive electronic and electrical parts, and specifically discloses a system, a method and a vehicle for upgrading software of multiple controllers of a vehicle based on USB communication. Background technique [0002] With the development of automotive electronics and control technology, there are more and more controllers on the car, and the complexity of the controller software is getting higher and higher. During the development process and even after sales, it is often necessary to upgrade the software of multiple controllers; Moreover, the capacity of the controller upgrade software is getting larger and larger, ranging from tens of megabytes to hundreds of megabytes. The traditional CAN communication, because the bandwidth is up to 1M / s, can no longer meet the bandwidth requirements of the vehicle controller software upgrade. A feasible way is to upgrade the software through USB. When upgradin...

Claims

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Application Information

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IPC IPC(8): G06F8/65G06F13/362G06F13/40
CPCG06F8/65G06F13/362G06F13/4068G06F2213/0042Y02D10/00
Inventor 汪思泉邹淼淼胡炼杨金菊刘燕
Owner DONGFENG MOTOR CORP HUBEI