IoT sensing technology based on acoustic phase

Yang LIU; Wuxiong ZHANG; Weidong FANG

doi:10.11959/j.issn.2096-3750.2018.00052

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IoT sensing technology based on acoustic phase

Theory and Technology | 更新时间：2024-06-05

- IoT sensing technology based on acoustic phase
- Chinese Journal on Internet of Things Vol. 2, Issue 2, Pages: 49-53(2018)
- 作者机构：
- 作者简介：
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- DOI：10.11959/j.issn.2096-3750.2018.00052
  CLC： TN912.6
- Published：30 June 2018，
  
  Published Online：2018-06，
- 稿件说明：
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YANG LIU, WUXIONG ZHANG, WEIDONG FANG. IoT sensing technology based on acoustic phase. [J]. Chinese journal on internet of things, 2018, 2(2): 49-53.
DOI：

YANG LIU, WUXIONG ZHANG, WEIDONG FANG. IoT sensing technology based on acoustic phase. [J]. Chinese journal on internet of things, 2018, 2(2): 49-53. DOI： 10.11959/j.issn.2096-3750.2018.00052.

摘要

物联网设备之间的感知以及交互技术是物联网行业发展必备基础之一。随着多媒体设备越来越普及（如智能手机、平板电脑、家庭音响），普遍存在于这些设备上的扬声器和麦克风使低成本声波设备与设备之间的交互技术成为可能。而声波具有的低速率、低频率的物理特性，使基于声波的感知技术具有较高的精度、较低的计算量等优点。基于此，提出一种声源与移动设备之间基于声波的相位差测量方法，以在不同的移动设备与声源之间进行高精度的距离测量。在一定范围内，首先，移动设备接收声源发送的单频率声音信号，并利用声音信号与声源的音频模块进行相位同步，然后，通过计算移动设备与声源之间相位差，计算移动设备与声源之间距离的改变。

Abstract

The perception and interaction technology between IoT devices is one of the necessary foundations for the development of the Internet of things.With the growing popularity of multimedia devices

such as smart phones

tablet

and home audio

the speakers and microphones are ubiquitous on these devices which make it possible to the low cost interaction between devices using acoustic signal.The low speed and low frequency physical properties of sound waves make the acoustic-based sensing technology have higher accuracy and lower computation.A phase based measurement method using acoustic signals was proposed

which could be used to measure high precision distance between different mobile devices and sound sources.In a certain range

firstly

the mobile device receives the single frequency acoustic signal transmitted by a sound source.The mobile device uses the sound signal to synchronize the phase between the mobile devices the sound source

and then calculates the distance between the mobile device and the sound source by calculating the phase difference during movement.

关键词

物联网感知技术相位补偿声波测距

Keywords

IoT perception technologyphase compensationacoustic ranging

references

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Related Institution

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