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相关概念视频

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

172
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...
172
Field Application of Global Positioning System01:28

Field Application of Global Positioning System

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The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
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相关实验视频

Updated: Sep 18, 2025

Design and Analysis for Fall Detection System Simplification
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可穿戴式摔倒检测系统具有实时定位和通知能力.

Chin-Kun Tseng1,2,3, Shi-Jia Huang1, Lih-Jen Kau1

  • 1Department of Electronic Engineering, National Taipei University of Technology, Taipei 106344, Taiwan.

Sensors (Basel, Switzerland)
|June 27, 2025
PubMed
概括

一个新的可穿戴设备使用低复杂度算法和GPS/NB-IoT来准确检测室外的落. 该系统确保及时应对紧急情况,并提高老年人在日常活动中的安全性.

关键词:
全球定位系统 (GPS) 是一个全球定位系统.物联网的窄带互联网 (NB-IoT)落检测系统 落检测系统 落检测系统惯性测量单位 (IMU) 是指惯性测量单位.

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科学领域:

  • 可穿戴技术是可穿戴技术.
  • 生物医学工程 生物医学工程
  • 老年学是一门学科.

背景情况:

  • 现有的落检测系统因缺乏位置意识和边缘设备的计算复杂性而难以实现现实世界.
  • 室外摔倒检测对于及时应对紧急情况至关重要,但目前的解决方案通常不适合连续使用.
  • 可穿戴系统在计算资源和电池寿命方面面临限制,这阻碍了长期部署.

研究的目的:

  • 开发一款便携式,可穿戴的跌倒检测设备,具有位置感知功能,用于户外使用.
  • 创建一个低复杂度的算法,适用于资源有限的边缘设备.
  • 加强对老年人在户外活动中的安全保证.

主要方法:

  • 集成微控制器 (MCU),惯性传感器,全球定位系统 (GPS) 和窄带物联网 (NB-IoT) 芯片模块.
  • 实现低复杂度的有限状态机器算法,用于降落事件检测和日常活动过.
  • 通过NB-IoT向服务器传输落警报和GPS坐标,以便转发到通信应用程序.

主要成果:

  • 该系统准确地过了八种日常活动,并检测了四种类型的跌倒 (向前,向后,左,右).
  • 在户外环境中进行的实验测试,采用6750个样本 (6000个日常活动,750个跌倒) 显示出高性能.
  • 实现了97.9%的平均灵敏度,99.9%的特异性和99.7%的整体准确性.

结论:

  • 开发的便携式可穿戴设备有效地检测室外跌倒,具有高精度和位置意识.
  • 低复杂度的算法和集成的GPS/NB-IoT技术使资源有限的边缘设备在户外长期使用成为可行的.
  • 该系统显著提高了对老年人的安全保证,在户外活动期间促进了迅速应急反应.