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Floating car information collection and optimization method based on active information reporting

A technology of information reporting and information collection, applied in the direction of traffic flow detection, etc., can solve the problems such as the change of real-time information of floating vehicles and redundant information that cannot be reflected in time, so as to reduce information data redundancy, reduce communication costs, and improve efficiency. Effect

Inactive Publication Date: 2013-04-24
FUJIAN UNIV OF TECH
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Problems solved by technology

[0003] Since the vehicle speed and driving direction may change greatly during the fixed sampling period, if the vehicle-mounted terminal collects data with a fixed sampling period, it will not be able to reflect the changes in the real-time information of the floating vehicle in time, and this may cause a large amount of redundant information.

Method used

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  • Floating car information collection and optimization method based on active information reporting
  • Floating car information collection and optimization method based on active information reporting

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Embodiment Construction

[0023] see Figure 1-2 As shown, the present invention relates to a floating car information collection and optimization method based on active information reporting, and the method includes the following steps:

[0024] data collection:

[0025] Step 10, use the vehicle-mounted GPS system to obtain the real-time information of the vehicle during the driving process of the floating vehicle with a fixed time period T, that is, the speed v i , direction d i and time t i , where i is the number of real-time vehicle information.

[0026] Information optimization:

[0027] Step 21. Within a fixed time period T, the vehicle-mounted terminal calculates the variation Δv of the speed value of the floating car and the variation Δd of the included direction angle, that is, Δv=|v i -v i-1 |;

[0028] Step 22. Determine whether the speed change Δv is greater than or equal to a threshold v preset by the system 0 , if when Δv≥v 0 , trigger the vehicle-mounted terminal to collect the...

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Abstract

The invention provides a floating car information collection and optimization method based on active information reporting. The floating car information collection and optimization method includes a tenth step of using a car-mounted terminal to obtain the real-time information of speed, direction and time of a floating car, a twentieth step of using the car-mounted terminal to calculate the variable quantity of speed and direction information of the car within a sampling cycle, if one variable quantity exceeds a preset threshold value of a system, the car-mounted terminal can be triggered to collect current car driving data information, if not, the car-mounted terminal can prolong the sampling cycle, and a thirtieth step of using the car-mounted terminal to upload the collected car driving data information to a data center through mobile cellular communication technology. Through the car-mounted terminal with different sampling cycles, the driving data information of the floating car is collected and actively uploaded, collection accuracy of the driving data information of the floating car is improved, and the communication cost is reduced at the same time.

Description

【Technical field】 [0001] The invention relates to a floating car information collection and optimization method based on active information reporting. 【Background technique】 [0002] Floating Vehicles Equipped with GPS, also known as GPS detection vehicle, is one of the advanced technical means used in the international intelligent transportation system (ITS) to obtain road traffic information in recent years. It has the characteristics of convenient application and wide coverage . Its basic principle: with the help of a GPS receiver, information such as the vehicle's position, time speed, and direction is collected with a fixed sampling period, and the collected data is uploaded to the background data center through mobile cellular technology. [0003] Since the vehicle speed and driving direction may change greatly during the fixed sampling period, if the vehicle-mounted terminal collects data with a fixed sampling period, it will not be able to reflect the changes in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01
Inventor 方卫东赖宏图蒋新华邹复民廖律超王桐森朱铨杨俊鹏陈培淇林家振
Owner FUJIAN UNIV OF TECH
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