Noise sensing and identifying device and method for civil aircraft

A civil aircraft and identification device technology, applied in the field of civil aviation, can solve the problems of prolonged duration, waste of resources, inability to reduce the burden of data processing and transmission of noise monitoring points, etc., and achieve the effect of reducing the amount of information processing and improving the speed

Active Publication Date: 2012-12-12
CIVIL AVIATION UNIV OF CHINA
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Problems solved by technology

[0004] At present, the domestic airport noise monitoring system has not yet formed a system. The filtering of non-aircraft noise interference in the noise data is still carried out manually. In foreign countries, it is judged by the duration of the aircraft noise exceeding the threshold. This method is for For monitoring points arranged in densely built areas, it is easy to be

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  • Noise sensing and identifying device and method for civil aircraft
  • Noise sensing and identifying device and method for civil aircraft
  • Noise sensing and identifying device and method for civil aircraft

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Embodiment Construction

[0039] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0040] see figure 1 , a civil aircraft noise perception and recognition device, comprising: a microphone module, a main control module, a storage module, an acoustic feature extraction module and a judgment module; wherein:

[0041] The microphone module collects sound information, and filters the collected sound information, filters out sound information with a decibel value lower than a certain set value, and uses sound information with a decibel value higher than a certain set value as the aircraft Noise, finally the aircraft noise is transferred to the main control module after analog-to-digital conversion;

[0042] The main control module receives the aircraft noise, stores the aircraft noise in the storage module or extracts the aircra...

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Abstract

The invention discloses a noise sensing and identifying device and a method for a civil aircraft, and the noise sensing and identifying device belongs to the technical field of civil aviation. The device comprises a microphone module, a master control module, a storage module, a sound feature extraction module and a judging module. The method comprises the following steps of: Step 1, extracting noise of aircrafts in different working stations, different directions and different distances of civil aircrafts with different models, and analyzing the noise of the aircrafts to obtain a supporting vector; Step 2, collecting the noise of the aircrafts and analyzing the noise of the aircrafts to obtain a feature vector; and Step 3, carrying out a linear operation for the feature vector and the supporting vector to obtain a judging result. The device provided by the invention integrates functions of sound collection, noise extraction of the aircrafts, feature vector extraction of the noise of the aircrafts, supporting vector training of the noise of the aircrafts and analysis of the noise of the aircrafts, and meanwhile, the device has the characteristic of high timeliness for sensing and identifying the noise of the aircrafts.

Description

technical field [0001] The invention relates to the technical field of civil aviation, in particular to a civil aircraft noise perception and recognition device and method based on a digital signal processing integrated circuit and a field programmable gate array integrated circuit. Background technique [0002] Since the "Eleventh Five-Year Plan", the rapid development of China's civil aviation has attracted worldwide attention. However, the continuous construction and expansion of airports and the continuous growth of air traffic have also made the airport noise problem that has plagued China's civil aviation for a long time more serious. In 2009, the Civil Aviation Administration of China conducted a survey on the noise impact of domestic airports and found that 55 airports had noise problems, and 28 airports had serious noise pollution. Moreover, with the continuous expansion of airport transportation, the level of noise environmental pollution is deteriorating, and the...

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Application Information

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IPC IPC(8): G10L21/02G10L15/02G10L15/06G10L15/20
Inventor 丁建立杨勇杨国庆曹卫东杨志娴王静
Owner CIVIL AVIATION UNIV OF CHINA
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