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Semantic enhanced transport vehicle acoustic information fusion method

A fusion method, enhanced technology, used in speech analysis, speech recognition, instrumentation, etc.

Inactive Publication Date: 2011-11-23
浙江万泰特钢有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a semantically enhanced traffic vehicle acoustic information fusion method for the lack of domain knowledge embedding in the existing information fusion technology

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  • Semantic enhanced transport vehicle acoustic information fusion method
  • Semantic enhanced transport vehicle acoustic information fusion method
  • Semantic enhanced transport vehicle acoustic information fusion method

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with accompanying drawing.

[0034] Taking the five land vehicle classifications as an example, such as figure 1 As shown in Fig. 1, an acoustic sensor composed of a microphone array is used to record the acoustic signals emitted by five kinds of vehicles when they are running. A microphone array is composed of six omnidirectional microphones, which are respectively installed on six vertices of an equilateral hexagon. The radius of the hexagon (that is, the distance from the apex to the center) is 122 cm, such as figure 2 shown. The five vehicles include two types of tracked vehicles and three types of wheeled vehicles. After the acoustic sensor is arranged on a playground, then five vehicles circle around the playground, and the sounds they emit are recorded and stored by the acoustic sensor.

[0035] Perform Fourier transform on the vehicle acoustic signal, such as image 3 As shown, find out i...

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Abstract

The invention relates to a semantic enhanced transport vehicle acoustic information fusion method, which comprises the following steps of: acquiring sound emitted by a running vehicle by utilizing a microphone array; extracting two groups of characteristics, namely harmonic characteristics X1 and key spectrum characteristics X2 from acoustic signals of the vehicle; marking available semantic attributes on the acoustic signals of the vehicle; and finally, arbitrating binary characteristic decision fusion by utilizing a semantic concept, and adopting a characteristic dimension distribution scheme when the signals are sent from a wheeled vehicle and adopting another characteristic dimension distribution scheme when the signals are sent from a tracked vehicle according to different semantic attributes. Dimensions of different characteristics are adjusted by analyzing the semantic attributes in the acoustic signals, different weighting effects are achieved, and the difference of characteristic importance is reflected, so that an effect of information fusion is improved. The accuracy of an acoustic transducer fusion system in the aspects of target identification or tracking can be improved by utilizing semantic analysis.

Description

technical field [0001] The invention belongs to the field of intelligent information processing, relates to knowledge representation in artificial intelligence and data fusion technology in information processing, in particular to a semantically enhanced information fusion method applied in an acoustic sensor network. Background technique [0002] The acoustic sensor network has the characteristics of relatively cheap equipment, stable performance, easy construction, and adaptability to harsh working environments, and can be applied in many fields. For example, for the characteristics of the sound signal when the vehicle is driving, the pickup array can be arranged beside the urban road to obtain important traffic flow parameters such as traffic volume and speed, so as to implement tasks such as automatic detection of vehicles and intelligent traffic monitoring; Deploy underwater acoustic transducer arrays in the ocean to collect oceanographic data and carry out activities s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L15/02G10L15/26G06K9/62
Inventor 郭宝峰林岳松彭冬亮朱胜利薛安克
Owner 浙江万泰特钢有限公司
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