Progress in airborne ultrasonic data communications for indoor applications

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Date
2017-01-19
Authors
Jiang, Wentao
Wright, William M. D.
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Institute of Electrical and Electronics Engineers (IEEE)
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Abstract
Capacitive ultrasonic transducers are efficient transmitters and receivers for ultrasonic waves in air, making them ideal devices for signal transmissions in air. Ultrasonic signals are unregulated, difficult to intercept from outside the room, and interference free to most electronic devices. These high security features make ultrasonic communication systems an alternative to radio frequency (RF) based systems for indoor applications. This paper investigated a prototype ultrasonic communication system using a pair of commercially available capacitive ultrasonic transducers in an indoor laboratory environment. Multichannel On-OFF keying (OOK) and binary phase-shift keying (BPSK) modulation schemes were implemented successfully in the system with wireless synchronization, achieving an overall data rate of 60 kb/s using ultrasonic bands from 50 to 110 kHz. The results show that a reliable line-of-sight (LOS) link can be established for communications over distances of 10 and 11 m using multichannel OOK and BPSK, respectively.
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Keywords
Acoustics , Atmospheric measurements , Bandwidth , Binary phase shift keying , Humidity , Receivers , Temperature measurement
Citation
Jiang, W. and Wright, W. M. D. (2017) 'Progress in airborne ultrasonic data communications for indoor applications', IEEE 14th International Conference on Industrial Informatics (INDIN), Poitiers, France, 19-21 July. doi:10.1109/INDIN.2016.7819180
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© 2017, IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.