Pre-processing method for data collection based on floating car

A floating car data and preprocessing technology, applied in the field of information technology applications, can solve problems such as waste of resources, low utilization value of traffic information service systems, etc., and achieve the effects of reducing communication costs, reducing data processing volume, and improving processing capabilities

Inactive Publication Date: 2012-04-11
FUJIAN UNIV OF TECH
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Problems solved by technology

[0002] At present, in the traffic information service system for public travel, the driving data collected by floating vehicles is an important part. The data sent to the data center by the traditional system is often collected at a fixed sampling period, and mo

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  • Pre-processing method for data collection based on floating car
  • Pre-processing method for data collection based on floating car
  • Pre-processing method for data collection based on floating car

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Embodiment Construction

[0031] see figure 1 Shown, a kind of preprocessing method based on floating car data acquisition, this method comprises the following steps:

[0032] Step 10. When the floating car is driving, collect the corresponding driving data sequence x within a preset time T with different sampling periods i , the driving data sequence x i Including: vehicle number u i , position l i , speed v i , direction s i and time t i information, i.e. xi =i , l i , v i ,s i , t i >, where i is the serial number of the driving data sequence x; wherein the sampling period is dynamically adjusted according to a preset speed-sampling cycle comparison table of the floating car; each driving data sequence is stored in a row of driving data sets X in turn;

[0033] see figure 2 As shown, the step 10 further includes:

[0034] Step 11. Use the floating car equipped with GPS vehicle positioning system to obtain the preset first sampling period, and collect the driving data sequence x 1 , nam...

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Abstract

The invention provides a pre-processing method for data collection based on a floating car, which comprises the following steps that: step 10, the floating car collects the car number, position, speed, direction and time information by different collecting periods within a pre-set time in the running process, wherein the collecting period is dynamically adjusted; step 20, the floating car filters and compresses the collected car running data to acquire high-value compression data set; step 30, the floating car transmits the compression data set to a data center by a mobile cell in a communicating way; and step 40, the data center de-compresses and restores the received compression data set to acquire the decompressed data set and the decompressed data set is stored in the database. The pre-processing method disclosed by the invention can change the sampling period in real time, filter and compress the collected data, acquire higher data collecting precision, reduce the communication cost of data transmission, and reduce the data processing amount of the center data. Therefore, the pre-processing method is significant for improving the processing capabilities of various traffic information service systems.

Description

【Technical field】 [0001] The invention relates to the application field of information technology, in particular to a method for collecting floating car data in a traffic information service system. 【Background technique】 [0002] At present, in the traffic information service system for public travel, the driving data collected by floating vehicles is an important part. The data sent to the data center by the traditional system is often collected at a fixed sampling period, and most of this information is redundant. , contains a large amount of information that is invalid or of little value to the traffic information service system, and these information often waste a lot of resources through filtering and compression in the data center. 【Content of invention】 [0003] The technical problem to be solved by the present invention is to provide a data acquisition method based on floating car technology, which can change the sampling period in real time according to the speed...

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Application Information

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IPC IPC(8): G06F19/00
Inventor 官刚宇蒋新华邹复民赖宏图廖律超王桐森朱铨陈鲤文张方舟陈培琪朱丹丹赵李坤唐小芳
Owner FUJIAN UNIV OF TECH
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