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相关概念视频

Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short distances...
Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device01:30

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point served as...

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相关实验视频

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Wideband Optical Detector of Ultrasound for Medical Imaging Applications
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迷你超声波空间定位模块在轻量级的交互式空间定位模块中

Lieguang Li1, Xueying Xiu1, Haochen Lyu2

  • 1School of Microelectronics, Shanghai University, Shanghai 200444, China.

Micromachines
|January 23, 2024
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种微型超声波空间定位模块,使用的是压电微机械超声波传感器 (PMUT). 这种新型传感器克服了传统系统的局限性,为先进的消费电子产品和元宇宙应用实现了精确的手部空间定位.

关键词:
没有盲点的测量.轻量级的交互式轻量级的交互式压电微机械超声波传感器 (PMUT) 是一种超声波传感器.空间定位的空间定位

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科学领域:

  • 消费电子产品消费者电子产品
  • 空间交互技术 空间交互技术
  • 声学传感器 声学传感器

背景情况:

  • 传统的光学空间交互技术具有较高的功耗和成本.
  • 现有的超声波解决方案提供更低的功耗和成本效益,但面临着盲点和大尺寸等挑战.
  • 这些局限性阻碍了轻量级消费电子产品的实际应用.

研究的目的:

  • 为了解决传统超声波空间定位系统的局限性.
  • 提出一个微型超声波空间定位模块.
  • 为了增强元宇宙应用程序的手部空间定位能力.

主要方法:

  • 使用压电微机械超声波传感器 (PMUT) 开发小型超声波空间定位模块.
  • 模块包括三个设备 (1.2 mm × 1.2 mm × 0.5 mm),运行在~180 kHz.
  • 调查错误率,故障范围及其与信号噪声比率 (SNR) 的关系.

主要成果:

  • 拟议的模块实现了0-800毫米距离检测范围,具有80°的定向性,消除了盲点.
  • 在克服传统超声波定位的局限性方面证明了有效性.
  • 关于SNR的测量误差和故障范围的彻底分析.

结论:

  • 微型超声波模块显著提高了手的空间定位能力.
  • 这一进步对于在元宇宙中开发下一代声学传感器应用至关重要.
  • 拟议的基于PMUT的系统为空间交互提供了具有成本效益和能效的解决方案.