Remote online upgrading method and device of vehicle-mounted control terminal

Abstract

The invention provides a remote online upgrading method of a vehicle-mounted control terminal. The remote online upgrading method of the vehicle-mounted control terminal comprises the following steps of obtaining updating code data from an FTP server and writing the updating code data into an upgrading code file; and reading the value of an updating mark in the upgrading code file, writing code data in an updating code zone appointed by an updating code index into a user code zone in a flash memory when the value of the updating mark is equal to a preset value 3, and running a program in the user code zone after the updating code index points to another updating code zone. The invention also provides a remote online upgrading device of the vehicle-mounted control terminal. The remote online upgrading device of the vehicle-mounted control terminal comprises a control chip, a GPRS / 3G / 4G communication module and a storage module. The remote online upgrading method and device of the vehicle-mounted control terminal can upgrade software embedded in the vehicle-mounted control terminal, not only can reduce the bit error rate of software upgrading, but also solve the technical problem of running collapse after software upgrading failure of the vehicle-mounted control terminal and improve running stability and reliability of the vehicle-mounted control terminal.

Description

technical field [0001] The invention relates to the technical field of vehicle-mounted terminals, in particular to a remote online upgrade method and device for a vehicle-mounted control terminal. Background technique [0002] Vehicle control terminal (referred to as "RCM" in English), commonly known as the "black box" of vehicle management, can monitor, manage and transmit data online in real time; monitor. In the actual application process, based on changes in application function requirements, the software embedded in the vehicle control terminal has an upgrade requirement. [0003] The traditional upgrade methods of software embedded in the vehicle control terminal mainly include two methods: the first method is to use a dedicated downloader to connect with the unit module in the vehicle control terminal, and transmit the updated code data to the vehicle control terminal to complete the upgrade operation , during the upgrade process, it is necessary to disassemble the ...

AI Technical Summary

Problems solved by technology

[0003] The traditional upgrade methods of software embedded in the vehicle control terminal mainly include two methods: the first method is to use a dedicated downloader to connect with the unit module in the vehicle control terminal, and transmit the updated code data to the vehicle control terminal to complete the upgrade operation , during the upgrade process, it is necessary to disassemble the box of the vehicle control terminal, the actual operation is more complicated, and requires the staff to have higher professional knowledge and skills; the second way is that the upper computer communicates with the vehicle control terminal through serial ports and CAN communication interfaces Connect and transmit the update code data to the vehicle control terminal to complete the upgrade operation. This upgrade method does not need to disassemble the vehicle control terminal box, and does not require a special downloader. The actual operation is relatively simple and the upgrade cost is low, but the upgrade There is a certain bit error rate in the method, and only requires the staff to have certain professional knowledge and skills

[0004] At the same time, the above two upgrade methods are all manual upgrade methods. In the actual application process, since the locations of the vehicles equipped with remote control terminals are extremely scattered, it is necessary for relevant staff to go to the vehicle site to perform the upgrade operation, which will cost a lot of money. Labor cost; due to operating cost considerations, the manual upgrade method is not suitable for large-scale upgrades of vehicle control terminals

The remote wireless upgrade method solves the problem that the manual upgrade method is not suitable for the large-scale upgrade of the vehicle control terminal. However, due to the influence of subjective and objective factors, the existing remote wireless upgrade method still has a certain bit error rate and In the case of upgrade failure, how to improve the stability and reliability of the vehicle control terminal software upgrade, reduce the bit error rate of its software upgrade, and how to prevent the operation crash after the vehicle control terminal software upgrade fails, so as to improve the vehicle control terminal The stability and reliability of operation are technical problems that need to be solved urgently

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