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Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

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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...
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相关实验视频

Updated: May 15, 2025

Methodology for Establishing a Community-Wide Life Laboratory for Capturing Unobtrusive and Continuous Remote Activity and Health Data
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基于LoRa回散的家庭监控系统.

Marc Lazaro1, Antonio Lazaro2, Ramon Villarino2

  • 1Department of Electric, Electronic and Automatic Engineering, Rovira i Virgili University, 43007, Tarragona, Spain. marc.lazaro@urv.cat.

Scientific reports
|April 8, 2025
PubMed
概括

本研究介绍了一种使用LoRa反射技术的无电池无线防盗报警. 它大大降低了无线传感器网络的长期无维护运行功耗.

关键词:
背向散射是一种反向散射.没有电池就没有电池了.物联网的物联网,就是物联网.洛拉洛拉是什么意思在这里,我们可以使用RFID RFID.

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科学领域:

  • 无线通信是一种无线通信.
  • 物联网 (IoT) 的物联网 (IoT) 的物联网.
  • 节能采集 节能采集 节能采集

背景情况:

  • 传统的无线报警系统需要经常更换电池,增加维护成本和环境影响.
  • 现有的低功耗无线解决方案往往会在性能或范围上妥协.
  • 对于安全应用,需要可持续的,长期的无线传感解决方案.

研究的目的:

  • 开发一个无电池的无线防盗报警系统,利用LoRa反射.
  • 为了尽量减少无线传感器节点的功耗,减少维护.
  • 为了使大量传感器能够在同一频道内的单个接收器上运行.

主要方法:

  • 设计了一个具有集成能源管理和RF前端的无线节点,用于LoRa反向散射.
  • 开发了一种全模拟调制通信协议,以优化功率和响应能力.
  • 利用商业LoRa收发器的频率检测功能来识别传感器来源.

主要成果:

  • 展示了一个功能性的无电池无线防盗报警系统.
  • 在无线节点中实现了显著的功率减少.
  • 在单个接收器上成功集成多个传感器,使用LoRa反射和频率检测.

结论:

  • 拟议的LoRa反射系统为无线防盗报警提供了一个可行的,无电池的解决方案.
  • 这种方法显著减少了维护要求,并提高了系统的可持续性.
  • 新的通信协议和传感器识别方法使得可扩展和高效的无线传感网络成为可能.