Data transmission method and device

A data transmission method and data technology, which can be applied to electrical digital data processing, instruments, etc., can solve the problems of inability to analyze big data in vehicle operation scenarios, and inability to realize reliable and effective real-time data transmission, and achieve the effect of big data analysis.

Active Publication Date: 2020-06-09
XIAN WINGTECH ELECTRONICS TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0002] Under the tide of smart car development, it is the general trend to apply the Android system to the automotive field to realize the intelligence of the vehicle terminal. However, because the vehicle bus CAN and LIN are both real-time buses, and the Android system is a non-real-time system, the existing Android system The transmission of the system and the bus of the car is an update transmission of the changing state, and it is impossible to achieve reliable and effective real-time data transmission, which leads to the inability to perform big data analysis on the entire operation scene of the car

Method used

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  • Data transmission method and device

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Embodiment Construction

[0052] The embodiment of the present invention provides a kind of data transmission method and device based on SPI bus, to realize real-time and reliability when carrying out data transmission between Android system 10 and MCU system 20, simultaneously this method can also be in bus rate and load rate When it is relatively high, maintain a low data packet loss rate.

[0053] 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. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is n...

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Abstract

The embodiment of the invention provides a data transmission method and device. The data transmission method comprises the steps that an SPI interrupt signal sent by an MCU system is received, and a first clock signal is provided for the MCU system based on the SPI interrupt signal; a frame header of a to-be-sent data packet in the MCU system is read based on the first clock signal, and whether the to-be-sent data packet is valid data is judged according to the frame header; and if the to-be-sent data packet is valid data, a second clock signal is provided for the MCU system, a message body inthe to-be-sent data packet is read based on the second clock signal, and a data confirmation signal is sent to the MCU system after reading is completed. Through the embodiment, the instantaneity andreliability in the data transmission process can be effectively ensured.

Description

technical field [0001] The present invention relates to the technical field of vehicle communication, in particular, to a data transmission method and device. Background technique [0002] Under the tide of smart car development, it is the general trend to apply the Android system to the automotive field to realize the intelligence of the vehicle terminal. However, because the vehicle bus CAN and LIN are both real-time buses, and the Android system is a non-real-time system, the The transmission of the system and the bus of the car is an update transmission of the changing state, and it is impossible to achieve reliable and effective real-time data transmission, which leads to the inability to perform big data analysis on the entire operation scene of the car. Contents of the invention [0003] In view of this, the purpose of the embodiments of the present invention is to provide a data transmission method and device to improve the above problems. [0004] The preferred e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/26G06F13/42
CPCG06F13/26G06F13/4282G06F2213/0002
Inventor 乔伟涛
Owner XIAN WINGTECH ELECTRONICS TECH CO LTD
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