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Indoor space perception and mobile sound source self-positioning method based on acoustic particle duality

An indoor space, mobile sound source technology, applied in the re-radiation of sound waves, radio wave measurement systems, instruments, etc. Moderate effect

Active Publication Date: 2019-02-22
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0005] Aiming at the problem that the attenuation and loss of acoustic signal propagation in complex indoor environments lead to insufficient localization capabilities of existing indoor mobile sound sources, the present invention proposes an indoor space perception and mobile sound source based on sound wave-particle duality. Localization method to realize mobile sound source localization in a non-device-dependent and non-cooperative manner

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  • Indoor space perception and mobile sound source self-positioning method based on acoustic particle duality
  • Indoor space perception and mobile sound source self-positioning method based on acoustic particle duality
  • Indoor space perception and mobile sound source self-positioning method based on acoustic particle duality

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Embodiment

[0062] refer to figure 1 , the present invention is based on the indoor space perception of sound wave particle duality and the mobile sound source positioning method, mainly divided into three steps: (1) spatial perception of the indoor sound field environment; (2) space modeling; (3) sound source Self-positioning.

[0063] refer to figure 2 , in the indoor environment, the speaker (sound source) S is located at ξ, and the microphone M is located at x r , L x is the distance between two parallel walls in the X-axis direction of the room to be sought, L Y is the distance between two parallel walls in the indoor Y-axis direction to be sought, x r Represents the position coordinates of the receiving microphone, which is an unknown quantity, but the distance d between it and the position coordinates ξ of the sound source S is known, therefore, to obtain ξ, then x r can be solved.

[0064] refer to figure 1 , step (1) is divided into two steps for the spatial perception pr...

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Abstract

The invention discloses an indoor space perception and mobile sound source self-positioning method based on acoustic particle duality. The method is characterized by using an intelligent mobile phoneas an acoustic transceiver integration device; using a non-cooperative mode, through designing and optimizing an acoustic pulse test signal, analyzing a sound field resonance characteristic, perceiving an indoor sound field environment space size, establishing the spatial model of a mobile sound source and a mirror image, and constructing an Euclidean distance matrix between a spatial point sourceand a receiving point; using the attribute of an EDM rank to accurately determine the flight time of a first-order acoustic echo; and using a multi-dimensional scale algorithm to solve the position information of the mobile sound source in real time, and realizing mobile sound source self-positioning. The method does not depend on the auxiliary facilities of an application place and the cooperation between devices, the dependence of a traditional geometric acoustic space perception method on a line-of-sight signal is gotten rid of, the universality of spatial perception and a mobile sound source self-positioning scheme is improved, and the method is suitable for indoor space geometric contour reconstruction and is also suitable for the mobile sound source tracking and positioning of an indoor environment.

Description

technical field [0001] The invention relates to the field of indoor positioning, specifically a method based on the analysis of sound wave-particle duality (fluctuation and particle) to realize space perception and continuous self-positioning of mobile sound sources in complex indoor environments. has important application value. Background technique [0002] According to relevant statistics, people spend more than 80% of their lives indoors, 80% of mobile communication services take place indoors, and 80% of information is related to time and location. Virtual reality, augmented reality, and autonomous robots (including unmanned vehicles, drones, etc.) have created an urgent need for indoor spatial map services and their location information. In fact, a large number of literature studies have shown that spatial awareness can help improve the localization accuracy of indoor mobile sources. [0003] At present, the common spatial perception technologies mainly include visio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S15/06G01S15/50
CPCG01S15/06G01S15/50
Inventor 宋浠瑜王玫仇洪冰罗丽燕
Owner GUILIN UNIV OF ELECTRONIC TECH
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