Three-level data compression device used for vehicle networking and method thereof

A technology for data compression and Internet of Vehicles, applied in the field of data processing, can solve the problem of no terminal support, and achieve the effect of reducing channel occupation time, reducing traffic costs, and improving interaction efficiency

Inactive Publication Date: 2017-01-11
SHAANXI HEAVY DUTY AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the 808 protocol forward-looking defines the data compression report message (message ID: 0x0901), that is, the GZIP compression algorithm is used to compress long messages, but there is currently no terminal support

Method used

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  • Three-level data compression device used for vehicle networking and method thereof
  • Three-level data compression device used for vehicle networking and method thereof
  • Three-level data compression device used for vehicle networking and method thereof

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Embodiment Construction

[0056] The present invention will be described in detail below with reference to the drawings and embodiments.

[0057] figure 1 It is a structural diagram of an embodiment of the three-stage data compression device of the present invention.

[0058] The vehicle-mounted terminal defines a three-level data compression cycle (such as 15 seconds). In each cycle, the data collected by the vehicle network is processed by the following four steps to perform three-level compression processing on the data before packaging and reporting to the management website:

[0059] Step 1: Data filtering.

[0060] According to the signal type, the signal is divided into three types: switching value, enumeration value and analog value, and data filtering is carried out respectively.

[0061] For the switching value and the enumeration value, since the data value of the signal is jumping, the number of values ​​is limited, and in the actual operation process, the value of the switching value and...

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Abstract

The present invention provides a three-level data compression device used for vehicle networking and a method thereof. According to the present invention, by the three-level compression of the data filtering, the data storage optimization and the universal lossless compression, and when a vehicle-mounted terminal sends the whole vehicle network acquired vehicle, road and environment data, the data compression can be carried out efficiently and rapidly, and after receiving a data packet, a management website can decompress rapidly to obtain the needed acquisition data. The method comprises the steps of firstly dividing the signals into the switch quantity signals/the enumeration quantity signals and the analog quantity signals according to the signal types, and carrying out the data filtering separately; secondly, carrying out the time storage optimization and the analog quantity numerical value storage optimization; then using a universal lossless data compression algorithm to compress the optimized data; caching the optimized data before compression, and when a set cycle arrives, compressing together. According to the present invention, the data transmission quantity between the vehicle-mounted terminal and the management website can be reduced, the channel occupation time and the flow cost are reduced, and the interaction efficiency of the terminal and the management website is improved.

Description

technical field [0001] The invention relates to a data compression device and method for the Internet of Vehicles, belonging to the technical field of data processing. Background technique [0002] The Internet of Vehicles is generally composed of two parts: a vehicle-mounted terminal and a management website. The vehicle-mounted terminal communicates with the engine and body electrical circuits through CAN bus and hard wires. It can collect data related to vehicles, roads and the environment. Through wireless transmission technology, the vehicle-mounted terminal Upload the collected information to the management website. The management website processes, calculates, shares and securely publishes the collected information, can effectively guide and supervise vehicles according to different functional requirements, and provide professional multimedia and mobile Internet application services. [0003] Since the Internet of Vehicles is currently in the initial application stag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08
CPCH04L67/12H04L67/5651
Inventor 高丽平黄震
Owner SHAANXI HEAVY DUTY AUTOMOBILE
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