This paper introduces a video intelligent surveillance system , and presents the structure of the system , adaptability for bandwidth and the method for intelligent surveillance . it describes the key technologies , such as wlan , efficient video coding arithmetic based on spiht ( set partition in hierarchical trees ) , intelligent alarm aroused by video - recognizing , and so on , gives out the testing results and important parameter of performance by realizing the system 提出了基于无线网的视频智能监控系统的原理结构、带宽适应性和智能监控的实现方法,描述了系统中使用的无线组网、基于spiht视频编解码算法和基于内容的视频识别等关键技术,给出了系统实现后的实际测试结果及相关性能指标。
Other goals of the plan include to research and form the frequency for chinese broadband wireless access technology , ensure the distribution of frequency resource , determine the air physical interface layer and mac layer technology needed for broadband wireless access , research the network model of broadband wireless access technology as well as its integration with ip networks , and research the seamless application of cellular mobile telecommunication for broadband wireless access technologies 研究制定我国宽带无线接入技术频率规划，确定频率资源分配；确定宽带无线接入技术空中接口物理层和mac层技术；研究宽带无线接入技术的网络模型及其与ip网络的结合；面向市场需求，研究宽带无线接入技术的无线组网及其与蜂窝移动通信的无缝应用。
Integration , networking and intellectualization are the trend of the infrared alarm system in the future . zigbee is a wireless technology with global standard , and is designed for low - cost , low - power - consumption , and the supporting of wireless network . based on the deep understanding of zigbee , a new type of infrared alarm system is investigated 集成化、网络化和智能化是红外探测防盗报警系统未来的发展趋势, zigbee技术是一种全球统一标准的无线技术,低成本,低功耗,支持无线组网,本文在深入研究zigbee技术的基础上,在开发新型红外探测防盗报警系统方面作了探索性的研究,主要内容为: 1 .介绍了热释电红外传感器的原理、结构和特点,以及以热释电红外传感器作为核心元件的被动式红外探测器防盗报警技术的发展概况。
