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相关概念视频

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...
32
Design Example: Measuring Distance Between Two Points with Obstructions01:10

Design Example: Measuring Distance Between Two Points with Obstructions

33
When measuring distances in areas with physical obstructions, such as a lake in a field, surveyors must employ techniques to calculate accurate lengths without direct line measurements. One effective method is the offset technique, which allows for precise distance estimation over inaccessible stretches.In this scenario, a surveyor must measure a side of an area that crosses a lake. Since the measuring tape cannot span the lake, the surveyor begins by establishing a baseline that aligns with...
33

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相关实验视频

Updated: Jun 25, 2025

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
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一种用于ZigBee室内距离测量的组合过方法.

Zhe Wei1, Zhanpeng Zhou1

  • 1School of Computer Science, Civil Aviation Flight University of China, Guanghan 618307, China.

Sensors (Basel, Switzerland)
|May 25, 2024
PubMed
概括

这项研究通过结合多个过器来增强使用Zigbee接收信号强度指示 (RSSI) 的室内距离测量. 新方法显著提高了准确性,将平均误差降低到0.46m,以更好地定位室内位置.

科学领域:

  • 无线传感器网络是无线传感器网络.
  • 室内定位系统 室内定位系统
  • 信号处理 信号处理

背景情况:

  • 齐格比的接收信号强度指示 (RSSI) 对于室内距离测量具有成本效益.
  • 多路径效应,信号减弱和阻塞降低了基于RSSI的距离精度.
  • 现有的方法在复杂的室内环境中扎RSSI固有的不准确性.

研究的目的:

  • 利用Zigbee RSSI开发一种强大的室内距离测量技术.
  • 为了减轻环境因素对测量准确性的影响.
  • 为了提高室内定位系统的可靠性.

主要方法:

  • 提出了一种结合过方法,整合了卡尔曼过,迪克森的Q测试,高斯过和平均过.
  • 对Zigbee传输功率和通道参数进行了评估,以评估它们对RSI的影响.
  • 使用测量数据来分析波效应,安装了一个信号传播损失模型.

主要成果:

  • 结合过方法显著提高了RSSI到距离的转换精度.
  • 平均距离测量误差减少到大约0.46米.
  • 性能大大超过了RSSI原始数据测量.
关键词:
这就是RSSI.齐格比 (Zigbee) 是一种西格比.综合过的过方法室内距离测量器 室内距离测量器室内定位装置 室内定位装置

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Published on: March 13, 2017

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结论:

  • 拟议的过方法提高了使用Zigbee RSSI的室内距离测量精度.
  • 这种技术为可靠的室内定位应用提供了可行的解决方案.
  • 该研究证明了数据融合和过在克服RSSI限制方面的有效性.