Acoustical positioning method using transponders with adaptive signal level normalizer

Acoustical indoor positioning — a technology to locate objects or people inside a building using acoustical signals — is a key technology for contextual awareness and ubiquitous computing. To achieve simple localization, in this paper, we propose a transponder-based indoor positioning method. The proposed method does not require clock synchronization for accurate positioning. Furthermore, by using an adaptive signal level normalizer, the terminal can receive acoustic signals with appropriate levels resulting in accurate positioning. We designed a transponder-based indoor positioning method using audible sound and evaluated its performance in experiments. In experiments, three anchors (transponders) of known position are installed on a ceiling of an anechoic chamber, and positioning is performed by setting a terminal in various points. Positioning experiment results showed that the proposed method can achieve on the order of 0.08 ± 0.02 m positioning.

[1]  Keiichi Zempo,et al.  Direction of Arrival Estimation Based on Delayed-Sum Method in Reverberation Environment , 2012 .

[2]  Koichi Mizutani,et al.  Measurements of Wind Velocity and Direction Using Acoustic Reflection against Wall , 2008 .

[3]  Yong Wang,et al.  Development of Ultrasonic Multiple Access Method Based on M-Sequence Code , 2007 .

[4]  Koichi Mizutani,et al.  Application of ultrasonic computerized tomography using time-of-flight measured by transmission method to nondestructive inspection for high-attenuation billets , 2014 .

[5]  Susumu Okada,et al.  Influence of electric field on electronic states of graphene nanoribbons under a FET structure , 2016 .

[6]  Rainer Mautz,et al.  Overview of current indoor positioning systems , 2009 .

[7]  Koichi Mizutani,et al.  Effect of mode conversion on defect detection and size estimation in billet from time-of-flight profile by ultrasonic transmission method , 2016 .

[8]  Koichi Mizutani,et al.  Interval of Observation Plane in Visualization of Region near Defects in Billets Using Ultrasonic Computerized Tomography Method (Special Issue : Ultrasonic Electronics) -- (Measurement techniques, imaging, nondestructive evaluation) , 2013 .

[9]  Koichi Mizutani,et al.  Two-Axis Anemometer with Acoustic Reflector Using Single Pair of Loudspeaker and Microphone , 2007 .

[10]  Takamichi Hirata,et al.  Healing burns using atmospheric pressure plasma irradiation , 2013 .

[11]  Keiichi Zempo,et al.  Localization of Acoustic Reflective Boundary Using a Pair of Microphones and an Arbitrary Sound Source , 2013 .

[12]  Hiroyuki Morikawa,et al.  DOLPHIN: an autonomous indoor positioning system in ubiquitous computing environment , 2003, Proceedings IEEE Workshop on Software Technologies for Future Embedded Systems. WSTFES 2003.

[13]  Hiroyuki Hachiya,et al.  Non-contact measurement of propagation speed in tissue-mimicking phantom using pass-through airborne ultrasound , 2014 .

[14]  A. Haghighat,et al.  Beep: 3D indoor positioning using audible sound , 2005, Second IEEE Consumer Communications and Networking Conference, 2005. CCNC. 2005.

[15]  Koichi Mizutani,et al.  Nondestructive Inspection for Steel Billet Using Phase-Modulated Signal by Gold Sequence for Improving Measurement Speed , 2012 .

[16]  H. Hashizume,et al.  Fast and Accurate Positioning Technique Using Ultrasonic Phase Accordance Method , 2005, TENCON 2005 - 2005 IEEE Region 10 Conference.

[17]  Youichi Ito,et al.  Improved method of imaging defect in noncontact and nondestructive technique by high-intensity aerial burst ultrasonic wave and optical equipment , 2015 .

[18]  Hiroyuki Hachiya,et al.  High-Accuracy Measurement of Small Movement of an Object behind Cloth Using Airborne Ultrasound (Special Issue : Ultrasonic Electronics) -- (Measurement techniques, imaging, nondestructive evaluation) , 2013 .

[19]  Takashi Katagiri,et al.  Cross-Correlation by Single-bit Signal Processing for Ultrasonic Distance Measurement , 2008, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

[20]  Hiroyuki Hachiya,et al.  Ultrasonic position and velocity measurement for a moving object by M-sequence pulse compression using Doppler velocity estimation by spectrum-pattern analysis , 2015 .

[21]  Shinnosuke Hirata,et al.  Ultrasonic distance and velocity measurement using a pair of LPM signals for cross-correlation method: improvement of Doppler-shift compensation and examination of Doppler velocity estimation. , 2012, Ultrasonics.

[22]  Takashi Katagiri,et al.  Accuracy and resolution of ultrasonic distance measurement with high-time-resolution cross-correlation function obtained by single-bit signal processing , 2009 .

[23]  Tomoyuki Miyamoto,et al.  Terahertz imaging system with resonant tunneling diodes , 2016 .

[24]  R. Zimmerman,et al.  Absolute positioning of an autonomous underwater vehicle using GPS and acoustic measurements , 2005, IEEE Journal of Oceanic Engineering.

[25]  Koichi Mizutani,et al.  Measurement of Temperature Distribution in Space Using Ultrasound Computerized Tomography , 1997 .

[26]  Hiroyuki Hachiya,et al.  Doppler Velocity Estimation Based on Spectral Characteristics of M-Sequence-Modulated Signals in Ultrasonic Measurement for Moving Objects , 2013 .

[27]  Asako Togari,et al.  Improved Measurement of Soil Moisture and Groundwater Level Using Ultrasonic Waves , 2011 .

[28]  Koichi Mizutani,et al.  Defect detection and size estimation in billet from profile of time-of-flight using ultrasonic transmission method with linear scanning , 2015 .

[29]  Minoru Kurosawa,et al.  Improvement in airborne position measurements based on an ultrasonic linear-period-modulated wave by 1-bit signal processing , 2015 .

[30]  Koichi Mizutani,et al.  Network-Controlled Measurement of Mean Spatial Temperature Using a Sound Probe with a Long Baseline , 2004 .

[31]  Shuqiang Guo,et al.  Motion detection in ultrasound image-sequence using tensor voting , 2008, 2008 IEEE Ultrasonics Symposium.

[32]  Koichi Mizutani,et al.  Precise Wireless Triggering System for Anemometers with Long-Baseline Acoustic Probes , 2010 .