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相关概念视频

Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

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Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
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Light Acquisition02:16

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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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Control Systems: Applications01:25

Control Systems: Applications

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Electrical engineering plays a pivotal role in our daily lives, with control systems at the heart of many applications, from home appliances to sophisticated space shuttles. Control systems manage and regulate the behavior of devices and processes, ensuring they function safely, correctly, and efficiently.
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Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
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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...
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Ampere-Maxwell's Law: Problem-Solving01:17

Ampere-Maxwell's Law: Problem-Solving

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A parallel-plate capacitor with capacitance C, whose plates have area A and separation distance d, is connected to a resistor R and a battery of voltage V. The current starts to flow at t = 0. What is the displacement current between the capacitor plates at time t? From the properties of the capacitor, what is the corresponding real current?
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相关实验视频

Updated: Jan 10, 2026

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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基于光学摄像头的V2X应用的集成传感和通信:模型和优化

Ke Dong1,2, Wenying Cao1, Mingjun Wang1,2

  • 1School of Automation and Information Engineering, Xi'an University of Technology, Xi'an 710049, China.

Sensors (Basel, Switzerland)
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概括

一个基于光学摄像头的系统增强了车辆的通信和传感. 优化相机曝光时间显著提高了性能,为V2X应用提供了计算效率高的解决方案.

关键词:
这就是OC-ISAC.道模型 道模型曝光效应暴露的影响.集成传感和通信.光学摄像机通信的通信方式车辆到一切的通信.可见光通信可见光通信

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科学领域:

  • 光电学和光子学的光电子和光子学.
  • 计算机视觉和图像处理
  • 无线通信无线通信

背景情况:

  • 车辆到一切 (V2X) 应用程序需要在不同的环境中进行强大的传感和通信.
  • 综合传感和通信系统 (ISAC) 提供了提高性能的潜力.
  • 可见光光谱为光学ISAC (OC-ISAC) 提供了机会.

研究的目的:

  • 为V2X提出和建模基于光学摄像头的综合传感和通信 (OC-ISAC) 系统.
  • 分析相机成像参数,特别是曝光时间对关节传感和通信性能的影响.
  • 开发一个高效的算法,以优化OC-ISAC系统中的曝光时间.

主要方法:

  • 开发了一种新的OC-ISAC通道模型,考虑光线从3D空间传播到图像传感器.
  • 系统地分析了基于相机参数的传感和通信性能之间的权衡.
  • 衍生出一种闭式,分析可处理的次优算法,用于接近最佳的曝光时间选择.
  • 与详尽的搜索相比,计算复杂性从O (((N) 降低到O (((1).

主要成果:

  • 拟议的OC-ISAC模型有效地整合了可见光谱内的传感和通信.
  • 暴露时间被确定为影响关节性能的关键参数.
  • 亚最佳算法以适度的5.71%的平均规范偏差实现了接近最佳的性能.
  • 实验验证证证实了理论发现.

结论:

  • 在高速OC-ISAC场景中,仔细选择暴露时间对于最佳的双功能性能至关重要.
  • 对摄像机的低通波效应的明确补偿对于接收器设计至关重要.
  • 开发的算法为优化OC-ISAC系统提供了有效的解决方案.