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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...

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相关实验视频

Updated: Jun 12, 2026

Multicolor Fluorescence Detection for Droplet Microfluidics Using Optical Fibers
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具有成本效益的光学无线传感器网络:在基于相机的通信中增强对子像素发射器的检测.

Idaira Rodríguez-Yánez1, Víctor Guerra2, José Rabadán1

  • 1Institute for Technological Development and Innovation in Communications (IDeTIC), Universidad de Las Palmas de Gran Canaria (ULPGC), 35017 Las Palmas de Gran Canaria, Spain.

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

一个新的算法增强了光学摄像机通信 (OCC),使发射器和接收器能够在没有摄像机修改的情况下工作. 这提高了发射器容量,并克服了可靠无线数据传输的近距离限制.

关键词:
光学摄像机通信的通信方式一个子像素的子像素.无线传感器网络是无线传感器网络.

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相关实验视频

Last Updated: Jun 12, 2026

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科学领域:

  • 计算机科学 计算机科学
  • 电气工程 电气工程
  • 无线通信无线通信

背景情况:

  • 光学摄像头通信 (OCC) 使用灯和图像传感器进行无线数据传输,提供能源效率.
  • 目前的OCC方法面临的挑战是发射机接收机的近距离,导致子像素投影和频道依赖.
  • 现有的解决方案限制了摄像机的功能,并与多个发射器作斗争.

研究的目的:

  • 为OCC.引入一个新的子像素光学发射器发现算法.
  • 在没有摄像头修改的情况下,在静态场景中启用OCC.
  • 为了克服近距离,发射器大小的限制,并增加发射器容量.

主要方法:

  • 开发了一个子像素光学发射器发现算法.
  • 在Python中实现了算法,使用多处理来提高效率.
  • 在各种照明条件下测试算法 (夜间,室内,室外白天).

主要成果:

  • 在夜间场景中实现了100%的检测率.
  • 在室内检测率达到89%,在白天室外检测率达到72%.
  • 证明了最小的假阳性和处理时间低于1秒.

结论:

  • 该算法有效地使OCC无需进行摄像头修改,从而增加了发射器的灵活性.
  • 检测速率受到照明和发射器类型的影响,但整体性能强大.
  • 该算法适合作为Web服务或数据转换组件集成.