面向无线网络相机的低功耗架构研究综述

doi:10.11896/jsjkx.201100099

摘要/Abstract

摘要： 目前,无线网络相机在环境监控领域、军事监控领域、城市监控领域正发挥越来越重要的作用。在远程或者密闭环境中使用时,无线网络相机由电池供电且不方便更换电池,相机必须满足长时间续航的要求。相机续航时间由相机功耗以及电池容量共同决定,由于电池技术无突破性进展,无线网络相机的低功耗架构设计成为了一个重要的研究方向。首先,罗列和分析了无线网络相机上各种硬件方案以及实际功耗表现。接着,对比了不同编码算法的功耗表现。在相机动态功耗管理方面,提出和分析了无线网络相机的动态功耗模型,为动态功耗管理提供理论基础,还分析了相机状态切换时的功耗模型,确定了超时模式下相机切换状态的阈值时间。最后,提出了无线网络相机的低功耗架构的总体设计流程。

关键词: 低功耗框架设计, 电池, 动态功耗管理, 嵌入式应用系统, 无线网络相机

Abstract: At present,wireless network camera is playing an increasingly important role in the field of environmental monitoring,military monitoring and urban monitoring.When used in remote or closed environments,the wireless network camera is powered by batteries and it is not convenient to replace the battery.The camera must meet the requirements of long battery life.The battery life of the camera is determined by the power consumption of the camera and the battery capacity.Since there is no breakthrough in battery technology,the low-power architecture design of wireless network cameras has become an important research direction.Firstly,the hardware solutions and power consumption performance of wireless network cameras are listed and analyzed.Then,the power performance of different coding algorithms is compared.In the aspect of camera dynamic power management,the dynamic power model of wireless network camera is proposed and analyzed,which provides the theoretical basis for dynamic power management.The power model of camera state switching is also analyzed,and the threshold time of camera state switching in time-out mode is determined.Finally,the overall design process of low power architecture of wireless network camerais presented.

Key words: Battery, Dynamic power management, Embedded application system, Low energy consumption architecture, Wireless network camera

中图分类号:

TN919.82

何权奇, 余飞鸿. 面向无线网络相机的低功耗架构研究综述[J]. 计算机科学, 2021, 48(6A): 369-373. https://doi.org/10.11896/jsjkx.201100099

HE Quan-qi, YU Fei-hong. Review of Low Power Architecture for Wireless Network Cameras[J]. Computer Science, 2021, 48(6A): 369-373. https://doi.org/10.11896/jsjkx.201100099

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