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J1939 bus data recorder, component layout method and technological process

A technology of J1939 and data recorder, which is applied in the direction of time register, instrument, registration/indication, etc. It can solve the problems of inability to realize in-depth application, file confusion, misleading data analysis, etc., and achieve convenient program upgrade and convenient use , The effect of reducing the cost of use and maintenance

Active Publication Date: 2015-01-28
SINO TRUK JINAN POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are some CAN bus data loggers on the market, and some of them can also realize the recording of J1939 bus data, but most of them can only realize simple data recording, and cannot realize in-depth applications, such as the selection of data file format, data file configuration and Terminal resistance configuration and other functions
If the user cannot configure the name of the file independently, all recorded data will have the same file name (only one time can be used to distinguish), then when the recorder is changed to another car, there will be confusion in the file, which will be misleading data analysis

Method used

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  • J1939 bus data recorder, component layout method and technological process
  • J1939 bus data recorder, component layout method and technological process
  • J1939 bus data recorder, component layout method and technological process

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Such as figure 1 Shown, a kind of J1939 bus data logger based on OBD-II interface that the present invention provides, its hardware composition comprises master controller MCU, TF card (Trans-flash Card, flash memory card) interface circuit, CAN interface circuit, RTC (real time clock) module, watchdog circuit and power supply, each part is introduced in detail as follows:

[0026] (1) Main controller MCU

[0027] The main controller MCU of the present invention adopts STM32F103RET6 (hereinafter referred to as STM32) based on the Cortex-M3 (ie ARM-v7) core as the main control chip, which is responsible for realizing all functions of the recorder. The ARM chip has a maximum frequency of 72MHz, embedded with 512K Flash, 64K RAM and a large number of commonly used peripherals. The STM32 chip uses the latest version of the uCos-iii operating system (OS). This ope...

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PUM

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Abstract

The invention discloses a J1939 bus data recorder. The J1939 bus data recorder comprises a master controller MCU, wherein the master controller MCU respectively reads data of a J1939 data bus and CAN bus diagnosis data of a vehicle bases on a UDS protocol through two CAN interface circuits, and reads and writes a TF card through a TF card interface circuit, and a clock signal is provided for the master controller MCU through an RTC module. The master controller MCU is an STM32 chip, and adopts a uCos-iii operation system. The invention further discloses a component layout method and a technological process of the J1939 bus data recorder; the J1939 bus data recorder can be widely applied to J1939 bus data recording aiming at commercial passenger cars and trucks so as to carry out the off-line analysis on vehicle bus data. The J1939 bus data recorder is very convenient and rapid to use, realizes the immediate recording after insertion, and recorded data files can be opened by using specific software to be used for carrying out data analysis.

Description

technical field [0001] The invention relates to the technical field of data recorders, in particular to a portable, easy-to-use and configurable J1939 bus data recorder based on an OBD-II interface, a component arrangement method and a process flow. Background technique [0002] SAE J1939 (hereinafter referred to as J1939) is a recommended standard of the American Society of Automotive Engineers (SAE), which is used to provide a standard architecture for communication between electronic components on medium and heavy road vehicles. J1939 is based on the Controller Area Network (CAN: Controller Area Network) developed by Bosch Company in Germany, which can reach a communication rate of 250Kbps. Currently, J1939 is the most widely used CAN application layer protocol in commercial vehicles, ships, rail locomotives, agricultural machinery and large engines. [0003] There are some CAN bus data loggers on the market, and some of them can also realize the recording of J1939 bus d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07C5/00
Inventor 营健张静郭鹏王殿辉
Owner SINO TRUK JINAN POWER
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