物联网热点问题研究

从物联网的定义出发,引出了物联网感知层研究中亟待解决的若干问题。"物联网"的"物"体现在对物体信息的感知,这可由无线传感网和RFID技术实现,属于感知层研究的内容。对于无线传感网来说,目前需要解决的问题包括能量的获取与控制,这可以从增加能量供应和控制能量消耗两方面进行研究,其热点研究方向有超级电容、无线供电、功耗控制等;无线传感器的自动组网技术包括Ad hoc网络和ZigBee协议研究两个热点方向,分别对应不同的应用场景。对于RFID来说,亟待解决的问题包括天线设计、声表面波技术、碰撞算法等,此外,文中还在感知层研究中研究了一些共性的问题,如电磁波传播特性、节点定位、超宽带技术、网络安全等。

Research on hot topics of Internet of Things

Beginning with the definition of Internet of Things (IOT), the paper describes the issues to be solved in the perception layer of IOT. The "Things" of IOT means sensing all the things around us, which can be realized by wireless sensor network (WSN) and radio frequency identification devices (RFID). Issues to be solved in WSN are energy capture and controlling, which can be studied from two aspects: one is to increase the energy supply and the other is to control the consumption. The research hotspots include super capacitor, wireless power and power control, etc. The research hotspots of automatic networking technology in WSN include Ad-hoc network and ZigBee which are used in different situations. Issues to be solved in RFID refer to antenna design, surface acoustic wave (SAW), and collision algorithm, etc. There are common problems in the sensing layer research, such as propagation characteristics of EM wave, node localization, UWB, and security technology, etc.