广域复杂流体系统中基于无线传感网的数据保存关键技术研究进展

Research Progress on Key Technologies of Data Storage Based on Wireless Sensor Networks in Wide-Area Complex Fluid Systems

流体系统包括城市供水管网、天然气供给管网等,是具有经济和社会价值的重要基础设施。它们具有分布地域广、结构复杂、规模庞大、难以检测等特点,在出现泄漏、污染等异常时难以快速发现和准确定位。随着传感器技术、通信技术、微机电技术等的发展,利用无线传感网来对系统进行监测成为研究热点。由于在流体系统中通信困难,数据被监测到后很难实时传送给用户,只能暂时保存在传感器节点(简称节点)上,等待适当的时刻再进行上传。但是,节点具有体积微小、易损坏、存储容量小、通信能力弱、能量有限等特点,如何可靠地存储大量的数据是一个难点问题。目前,已有部分工作对这个问题进行了研究。为了解该领域研究的进展,文中对相关工作进行了细致地分析、对比、归纳和总结,介绍了它们的优缺点,并对未来的研究方向进行了探讨。

The fluid system,including the urban water supply pipe networks and the natural gas supply pipe networks,is an infrastructure with important economic and social values.They have the characteristics of wide geographical distribution,complex structure,large scale and difficult to detect.When leakage,pallution and other abnormalities occur,it’s difficult to quickly find and accurately locate.With the development of sensor technology,communication technology,micro-electromechanical technology,using wireless sensor networks to monitor the system has become a research hotspot.Due to difficult communication in the fluid system,the data is difficult to transmit to the user in real time after being monitored,and can only be temporarily stored on the sensor node(referred to as a node),waiting for a suitable moment to upload.However,nodes have the characteristics of small size and easy damage,small storage capacity,weak communication capability,and limited energy.How to reliably store large amounts of data is a difficult problem.At present,some work has been done on this issue.In order to understand the progress of research in this field,this paper have carried out detailed analysis,comparison,summarization and summary of related work,and learned their advantages and disadvantages,and discussed the future research direction.