Method for updating three-dimensional traffic noise map in conjunction with offline storage and instant calculation

A technology for traffic noise and map update, applied in computing, image data processing, program control design, etc.

Inactive Publication Date: 2016-12-07
SUN YAT SEN UNIV
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the existing problem of rapid update of the three-dimensional traffic noise map in a large area, and provide a fast three-dimensional traffic noise map with easy operation, load balance and high scalability, which combines offline storage and real-time calculation. update method

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  • Method for updating three-dimensional traffic noise map in conjunction with offline storage and instant calculation
  • Method for updating three-dimensional traffic noise map in conjunction with offline storage and instant calculation

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[0020] The drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate this embodiment, some parts in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product;

[0021] For those skilled in the art, it is understandable that some well-known structures and descriptions thereof may be omitted in the drawings.

[0022] Such as figure 1 As shown, the 3D traffic noise map rapid update method combined with offline storage and real-time calculation proposed by the present invention mainly includes three modules: data acquisition and processing module, noise distributed computing module and noise map update module. The entire noise map calculation and update process is as follows:

[0023] Step 1: The data acquisition processing module uses the GIS platform to write a program using Arcgis Engine API to read the urban geographic feature information from the GIS datab...

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Abstract

The invention provides a method for updating a three-dimensional traffic noise map in conjunction with offline storage and instant calculation. The method comprises the following steps: dividing noise calculation into calculations for noise emission item related to traffic flow and noise degeneration item unrelated to the traffic flow; calculating the noise degeneration item only related to geographic elements in advance and offline storing in a database; while updating the three-dimensional traffic noise map, only calculating the changed noise emission item according to the change in urban road traffic flow state and calculating the final noise value by combining with the offline stored noise emission item, thereby reducing the calculation amount. For increasing the updating speed of the three-dimensional traffic noise map, the manner of computer cluster parallel computing is taken for accelerating the noise calculation and updating of the noise map. The distributed calculation system combined with the method has the characteristics of high load balance, high flexibility and excellent expansibility. The system matched with the optimized noise map updating algorithm can greatly reduce the calculation time and obviously increase the updating efficiency.

Description

technical field [0001] The present invention relates to the technical field of road traffic three-dimensional noise calculation update and computer cluster distributed computing, and more specifically, relates to a method for quickly updating a three-dimensional traffic noise map combined with off-line storage and real-time calculation. technical background [0002] The 3D traffic noise map can not only show the distribution of traffic noise on the ground, but also can show the noise distribution on the surface of many buildings standing on the ground. In view of the noise source that affects people's daily life is mainly road traffic noise, but the state of road traffic has certain time characteristics. Therefore, the rapid update of the noise map according to the road traffic status, and the application of the three-dimensional traffic noise map to display, analyze and evaluate the noise distribution in the study area are of great importance to the study of the temporal an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30G06F9/50G06T17/05G06T19/20
CPCG06F9/5083G06F16/29G06T17/05G06T19/20G06T2200/28
Inventor 蔡铭张智伟马侠霖
Owner SUN YAT SEN UNIV
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