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.

引用

页数：7

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