Method for measuring and analyzing noise in train and system thereof
A technology for measuring and analyzing interior noise, which is applied in the field of railway train interior noise measurement and analysis methods and systems, and can solve problems such as irrationality and one-sidedness of measurement data
Active Publication Date: 2010-12-15
CENT SOUTH UNIV
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Problems solved by technology
Simple measurement and analysis of various parameters of the train vehicle itself without considering the influence of external environmental factors will lead to unreasonable and one-sidedness of the measurement data
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[0048] The noise measurement and analysis method in the railway train is used for the noise measurement and processing analysis in the railway train. The deceleration sensor can be a three-way acceleration sensor that includes a quick fixing mechanism for measuring horizontal, vertical, and vertical directions. The acceleration sensor is arranged near the contact point between the secondary suspension and the bogie, which is located on the side beam of the vehicle bogie Above, through the acceleration sensor set outside the car, the noise excitation load inside the car can be obtained. The speed sensor can be set at any position of the carriage to measure the running speed of the train carriage in real time. The navigation and positioning device uses a GPS navigator, which can be set at any position in the carriage to obtain the geographical and environmental conditions along the railway including bridges, tunnels, etc.; multiple sound pressure sensors are distributed on the ce...
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The invention relates to a method for measuring and analyzing noise in a train and a system thereof. The method comprises the following steps: arranging an acceleration sensor outside the train to obtain an excitation load of the noise in the train; arranging a speed sensor to obtain a current operation of the train; arranging a navigation positioning device to obtain geographical and environmental conditions along the line of the train; arranging a sound pressure sensor inside a railway carriage to obtain a noise pressure value inside the railway carriage; obtaining data of the sensors by adopting a data acquisition processing terminal through a transmission module, thereby obtaining measurement and analysis results including information along the line of the train, operation speed and noise pressure value. The invention scientifically evaluates the noise level inside the railway carriage, obtains the comprehensive data processing results including the information along the line of the train except for the railway carriage, the operation speed and the pressure value, has reasonable design and complete and accurate data of various noise influences, and can be used for more scientifically and accurately evaluating the noise in the train.
Description
Technical field [0001] The invention belongs to the measurement and analysis technology of train machinery and aerodynamic noise, and in particular relates to a method and system for measuring and analyzing the noise in a railway train used for actual vehicle test. Background technique [0002] With the continuous increase of train speed, noise pollution along the railway line and inside the train compartment has increased sharply, directly affecting the quality of life of residents along the line and the comfort of passengers in the train. Especially in recent years, the large-scale construction of my country's railway passenger dedicated lines and the large number of EMUs have been put into use. This problem has become increasingly prominent. Proposing feasible noise reduction schemes for high-speed trains has become a hot spot in related research fields. [0003] At present, domestic and foreign scholars usually use three methods: numerical simulation calculation, wind tunnel t...
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IPC IPC(8): G01H17/00G01M17/08
Inventor 田红旗杨明智刘辉杨志刚许平李志伟
Owner CENT SOUTH UNIV