Embedded real-time ultrasound-based multi-touch system

被引：0
|
作者：
Bilodeau, Maxime [1 ]
Moriot, Jeremy [1 ]
Frechette-Viens, Joelle [1 ]
Bouchard, Raphael [1 ]
Boulais, Philippe [1 ]
Quaegebeur, Nicolas [1 ]
Masson, Patrice [1 ]
机构：
[1] Univ Sherbrooke, Ctr Rech Acoust Signal Humain, Dept Mech Engn, Sherbrooke, PQ J1K 2R1, Canada
来源：
JASA EXPRESS LETTERS | 2024年 / 4卷 / 08期
基金：
加拿大自然科学与工程研究理事会;
关键词：
SURFACE;
D O I：
10.1121/10.0028323
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
In this paper, an active ultrasound-based touchscreen technology is presented for real-time monitoring of multiple contacts on a glass panel of 20 x 19 cm. Both fundamental Lamb wave modes are generated by sending a linear chirp between 50 and 100 kHz to a single piezoelectric ceramic lead zirconate titanate. Measurement is performed using four piezoelectric ceramic lead zirconate titanate elements, and real-time localization and detection are performed on a system on module i.MX 8 M Nano. Results show that Lamb waves can be used for real-time multi-touch detection and localization on both sides of the panel. Moreover, the prototype developed allows for relative pressure measurement.
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收藏
页数：7
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