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CAN bus data transmission monitoring system

A technology of CAN bus and data transmission, which is applied in the field of CAN bus data transmission monitoring system, can solve problems such as CAN bus data transmission interruption, and achieve the effects of ensuring timeliness, avoiding data transmission interruption, and facilitating offline viewing

Active Publication Date: 2014-07-23
严格集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the CAN bus data transmission is interrupted when the CAN bus fails, and provides a CAN bus data transmission monitoring system

Method used

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specific Embodiment approach 1

[0028] Specific implementation mode one: the following combination figure 1 Describe the present embodiment, the CAN bus data transmission monitoring system described in the present embodiment, it comprises CAN bus 1, and it also comprises single-chip microcomputer 2, SD card 3, TFT color screen 4, voice chip 5, liquid crystal display 6, button module 7 and PC 8,

[0029] CAN bus 1 is used as a data transmission line, including two parallel CAN buses and a minimum system driven by a single-chip microcomputer. The data transmission end of CAN bus 1 is connected to the first data transmission end of single-chip microcomputer 2; the second data transmission end of single-chip microcomputer 2 is connected to SD card 3 single-chip computer 2 controls the TFT color screen 4 through the FSMC bus, the single-chip computer 2 controls the voice chip 5 through the SPI bus, the single-chip computer 2 controls the liquid crystal display screen 6 through the SPI bus, and the first output co...

specific Embodiment approach 2

[0034] Specific implementation mode two: the following combination Figure 10 This embodiment will be described. This embodiment will further describe the first embodiment. The model of the single-chip microcomputer 2 in this embodiment is STM32F103VCT6, and the single-chip microcomputer 2 determines the data download mode through the boot0 and boot1 pins.

specific Embodiment approach 3

[0035] Specific implementation mode three: the following combination Figure 1 to Figure 13Describe this embodiment, this embodiment will further explain the first or second embodiment, this embodiment also includes a linear regulated power supply module, the linear regulated power supply module is used to convert the 5V voltage into a 3.3V voltage, and is a single-chip microcomputer 2, SD Card 3, TFT color screen 4, voice chip 5, liquid crystal display 6 and key module 7 provide working power.

[0036] The CAN bus data transmission monitoring system of the present invention integrates the single-chip microcomputer 2 and the SD card 3, and can easily read and write files on the SD card at the application layer through the embedded FatFS file system, and operates 320*480 through the FSMC bus resolution TFT color screen, operate the ISD1750 voice chip through the SPI bus, operate the 12864 LCD display through the SPI bus, and set the CAN bus baud rate by the key module 7 to meet...

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Abstract

The invention relates to a CAN bus data transmission monitoring system and belongs to the technical field of CAN bus data monitoring. The CAN bus data transmission monitoring system aims to solve the problem that CAN bus data transmission interruption can be caused by faults in CAN buses. A CAN bus of the CAN bus data transmission monitoring system serves as a data transmission line and comprises two paths of CAN buses and a single-chip microcomputer driving minimum system. The data transmission end of the CAN bus is connected with a first data transmission end of a single-chip microcomputer, a second data transmission end of the single-chip microcomputer is connected with a data transmission end of an SD card, the single-chip microcomputer controls a TFT color screen through an FSMC bus, controls a voice chip through an SPI bus and controls a liquid crystal display screen through the SPI bus, a first output control end of a key module has a CAN bus Baud rate through the single-chip microcomputer, a second output control end of the key module controls reading of SD card data through the single-chip microcomputer, and the CAN bus is connected with an upper computer through a data port. The CAN bus data transmission monitoring system is used for monitoring in the CAN bus data transmission process.

Description

technical field [0001] The invention relates to a CAN bus data transmission monitoring system and belongs to the technical field of CAN bus data monitoring. Background technique [0002] The CAN (Controller Area Network) bus was developed by the German BOSCH company, which is famous for its research and development and production of automotive electronic products, and eventually became an international standard. It is the most widely used field bus technology so far. CAN protocol has two kinds of ISO11898 standard and ISO11519-2 standard after being standardized by ISO. The ISO11898 and ISO11519-2 standards have the same definition for the data link layer, but the physical layer is different. ISO11898 is a CAN high-speed communication standard with a communication speed of 125kbps-1Mbps; ISO11519 is a CAN low-speed communication standard with a communication speed below 125kbps. High-speed CAN and low-speed CAN devices cannot be allowed in the same CAN network. For control...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
Inventor 刘宇维周乃新刘帅陈兴林
Owner 严格集团股份有限公司
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