基于超宽带收发器模块的纳秒动的无线触发器分布.
Julius Korsimaa1, Martin Weber1, Edward Hæggström1
1Electronics Research Laboratory, Department of Physics, University of Helsinki, P.O.B. 64, FI-00014 University of Helsinki, Finland.
HardwareX
|October 27, 2025
概括
本研究介绍了一种超宽带系统,用于无线传感器网络的精确时间同步,克服了室内和地下应用的全球导航卫星系统 (GNSS) 接收器的局限性.
科学领域:
- 电气工程 电气工程
- 计算机科学 计算机科学
- 网络工程 网络工程
背景情况:
- 无线传感器网络 (WSN) 需要精确的时间同步,以便协调运行.
- 全球导航卫星系统 (GNSS) 提供纳秒准确度,但具有诸如天空视图依赖性和易受干扰等局限性.
- 由于基础设施或信号限制,现有的同步方法可能不适合所有环境或应用.
研究的目的:
- 提出和评估一种新的触发信号分配系统,用于WSN中的时间同步.
- 为了克服GNSS在室内/地下WSN同步方面的局限性.
- 使用超宽带技术实现高精度时间同步.
主要方法:
- 使用了DWM1000 IEEE 802.15.4-2011超宽带 (UWB) 收发器模块.
- 配置了一个UWB模块网络,以无线分发触发信号.
- 测试了系统在WSN中协调信号传输和接收的性能.
主要成果:
- 实现了分布式触发信号的典型时间动小于±4纳秒.
- 证明了系统在WSN中协调信号传输和接收的能力.
- 验证了基于UWB的高精度同步方法的有效性.
结论:
- 拟议的UWB触发信号分发系统为GNSS提供了一个可行的替代方案,用于WSN中精确的时间同步.
- 该方法适用于需要纳秒级准确度的应用,包括室内/地下环境.
- 该系统有效地协调WSN操作,显示结构健康监测和类似应用的前景.
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