Method for predicting probability of free-flow road traffic noise

A road traffic and probability prediction technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as free-flow road traffic noise and probability distribution prediction that have not yet been seen, and achieve a small amount of calculation and simulation process. simple effect

Inactive Publication Date: 2017-03-15
SUN YAT SEN UNIV +1
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Problems solved by technology

For the traffic flow of free-flow roads, it is easier to establish a Monte Carlo simulation process, but so far, there is no method based on Monte Carlo simulation to predict the traffic noise and probability distribution of free-flow roads

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  • Method for predicting probability of free-flow road traffic noise
  • Method for predicting probability of free-flow road traffic noise

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Embodiment Construction

[0017] 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;

[0018] For those skilled in the art, it is understandable that some well-known structures and descriptions thereof may be omitted in the drawings. The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] Such as figure 1 , a probabilistic prediction method for free-flow road traffic noise. The specific prediction process is as follows: first, use a free-traffic-flow Monte Carlo simulation to obtain a series of parameters consisting of the number of vehicles, vehicle types, positions and speeds on the road at any point in time Then input these data sets into the vehicle noise emission probability model to ...

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Abstract

The invention provides a method for predicting the probability of free-flow road traffic noise based on monte carlo simulation, which is applicable to dynamic simulation calculation for free-flow road traffic noise. The method comprises the following steps: simulating by a free traffic flow monte carlo simulator to obtain a series of data sets formed by several parameters including vehicle number, vehicle type, position and speed on a road at an arbitrary point in time; inputting the data into a vehicle noise emission probability model to obtain a vehicle noise source strength and position data set; and finally calculating a series of noise values at receiving points by combining a noise propagation attenuation calculation model. The method can be used for greatly simplifying the traffic flow simulating process, and has the advantages of simple modeling, small calculated amount and accurate and reliable simulating calculation result.

Description

technical field [0001] The invention relates to the fields of road traffic noise prediction models and noise dynamic simulation calculations, and more specifically, relates to a free-flow road traffic noise probability prediction method, which can be used to accurately simulate the traffic noise value and its probability distribution under the action of road free traffic flow. Background technique [0002] While urban road traffic brings convenience to people's lives, it also causes environmental pollution. Among them, traffic noise pollution has become one of the main environmental problems that interfere with people's normal life. It can be seen that traffic noise pollution in major large and medium-sized cities in my country is already very serious at present, which has caused a major impact on people's work, study and rest, and even induces various diseases. With the increase of the number of motor vehicles, the situation of traffic noise pollution will become more and m...

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 蔡铭张智伟李锋
Owner SUN YAT SEN UNIV
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