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相关概念视频

Design Example: Resistive Touchscreen01:14

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A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
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Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
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相关实验视频

Updated: Jun 15, 2025

An Experimental Protocol for Assessing the Performance of New Ultrasound Probes Based on CMUT Technology in Application to Brain Imaging
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嵌入式实时基于超声波的多触摸系统.

Maxime Bilodeau1, Jérémy Moriot1, Joëlle Fréchette-Viens1

  • 1Department of Mechanical Engineering, Centre de Recherche Acoustique-Signal-Humain de l'Université de Sherbrooke, Université de Sherbrooke, Sherbrooke, J1K 2R1, Québec, Canadamaxime.bilodeau2@usherbrooke.ca, jeremy.moriot@usherbrooke.ca, joelle.frechette-viens@usherbrooke.ca, raphael.bouchard2@usherbrooke.ca, philippe.boulais@usherbrooke.ca, nicolas.quaegebeur@usherbrooke.ca, patrice.masson@usherbrooke.ca.

JASA express letters
|August 28, 2024
PubMed
概括
此摘要是机器生成的。

这项研究介绍了一种基于超声波的触摸屏,使用Lamb波来实时多触摸检测和玻璃面板上的定位. 该技术还可实现相对压力测量,增强交互式表面功能.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 声学 声学 在声学上
  • 人与计算机的交互

背景情况:

  • 传统的触摸屏在多触摸精度和压力传感方面存在局限性.
  • 超声波技术为先进的触摸交互提供了一个潜在的途径.

研究的目的:

  • 开发和评估一个基于超声波的触摸屏系统.
  • 为了实现在玻璃面板上实时监控多个触点.
  • 评估使用该技术进行相对压力测量的可行性.

主要方法:

  • 使用了通过压电陶酸 (PZT) 转换器通过线性声 (50-100 kHz) 生成的基本Lamb波模式.
  • 使用四个PZT元件进行信号测量.
  • 在模块上的i.MX 8M Nano系统上实现实时定位和检测.

主要成果:

  • 在20x19厘米玻璃面板的两侧展示了成功的实时多触摸检测和定位.
  • 证实了Lamb波对于精确触摸事件跟踪的能力.
  • 验证了原型执行相对压力测量的能力.

结论:

  • 基于超声波的触摸屏技术有效地实现了实时多触摸检测和定位.
  • 羔羊波传播是先进的交互式表面应用的可行方法.
  • 开发的原型显示了对压力敏感触摸接口的前景.