Noise data acquisition method and device
A technology of noise data and acquisition method, applied in the field of rail vehicles, can solve problems such as difficulty in obtaining noise data
Active Publication Date: 2021-01-05
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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[0003]
However, the calculation of noise data in the existing rail train car body is carried out on the premise of normal temperature environment and the temperature difference between the inside and outside of the car body is zero degrees. The internal temperature is 23°C to 25°C, and there is a large temperature difference between the inside and outside of the car body structure, and it is difficult to obtain accurate noise data. The noise data in the car body, to meet the actual design requirements, has become one of the technical problems to be solved by those skilled in the art
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[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0043] see figure 1 , figure 1 It is a flow chart of the noise data acquisition method provided by the embodiment of the present invention. The method can be applied to electronic equipment. The electronic equipment can be an electronic equipment with data processing capabilities such as a notebook computer and a PC (personal computer). Obvi...
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The invention provides a noise data acquisition method and device, which are applied to the technical field of rail vehicles. The method comprises the following steps: after acquiring foundation data,calculating to obtain first reference source intensity of a target preset area based on a function relationship between noise source intensity and a driving speed, and further Calculating to obtain second reference source intensity based on a function relationship between the noise source intensity and an environment temperatur; based on a function relation between sound insulation data and the vehicle body temperature difference, calculating to obtain reference sound insulation data of the target preset area under the target vehicle body temperature difference, and finally based on the obtained second reference source intensity, the reference sound insulation data and the position of the preset standard point, calculating the noise data of the preset standard point in the vehicle body. According to the method, the influence of the driving speed and the environment temperature on the noise source intensity is fully considered, the influence of the vehicle body temperature difference on the sound insulation data is combined, the noise data in the vehicle body when the vehicle body drives at the high driving speed in the cold zone working condition can be calculated through the method, and then the actual design requirement is met.
Description
technical field [0001] The invention belongs to the technical field of rail vehicles, and in particular relates to a noise data acquisition method and device. Background technique [0002] With the continuous increase of the speed of rail trains, the noise generated during the running of the train is getting louder and louder. In order to provide passengers with a comfortable riding environment, the noise inside the train must be controlled within the range specified by industry standards. Therefore, how to accurately calculate the noise in the car body and provide a reference for the design and production of the vehicle has always been the goal pursued by rail train designers. [0003] However, the calculation of the noise data in the existing rail train car body is carried out on the premise of normal temperature environment and the temperature difference between the inside and outside of the car body is zero degrees. The internal temperature is 23°C to 25°C, and there is...
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IPC IPC(8): G06F30/15G06F30/20G06F119/10
CPCG06F30/15G06F30/20G06F2119/10Y02T90/00
Inventor 王雷杨姝邓洋葛剑敏
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD