Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Data transmission method and device based on can bus

A data transmission method, CAN bus technology, applied in the direction of digital transmission system, bus network, transmission system, etc., can solve the problems of effective data volume reduction, reduce data bandwidth utilization rate, etc., and achieve the effect of improving utilization rate and reducing length

Active Publication Date: 2020-12-08
BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, with the above method, since the verification data will occupy a part of the data field in the CAN bus, the amount of valid data carried in each frame will decrease, thereby reducing the utilization rate of the data bandwidth

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Data transmission method and device based on can bus
  • Data transmission method and device based on can bus
  • Data transmission method and device based on can bus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0050] The terms "first", "second", "third" and "fourth" (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects without necessarily using Used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides a CAN bus-based data transmission method and device, the method comprising: combining the valid data carried in the nth data packet to be sent to the n+mth data packet to be sent to obtain the combined data; wherein , n and m are positive integers greater than zero; the merged data is checked to obtain check data; the check data is divided into m+1 pieces of sub-check data, and each block of sub-check data They are respectively carried in different data packets to be sent and sent to the receiving end through the CAN bus. The CAN bus-based data transmission method and device provided by the present invention can increase the amount of effective data that can be carried in each frame of data, thereby improving the utilization rate of data bandwidth.

Description

technical field [0001] The invention relates to communication technology, in particular to a CAN bus-based data transmission method and device. Background technique [0002] The controller area network (CAN) bus is a bus system widely used in the automotive field. Compared with the RS-485 distributed control system based on the R line, the network nodes of the distributed control system based on the CAN bus The real-time data communication among them is strong, and the development cycle is short. [0003] Figure 1a It is a schematic diagram of data transmission in the prior art, Figure 1b It is a schematic diagram of transmitting verification data in the prior art. like Figure 1a As shown, the data field of each frame of the CAN bus is up to 8 bytes. In the case of no data verification, the 8 byte data fields are all used to transmit valid data. like Figure 1b As shown, in the occasion where there is a requirement for data transmission security, the verification data...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/40H04L12/891H04L1/00H04L47/41
Inventor 张杨陈博文王驰
Owner BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com