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Research and Development of Location Systems Based on Wireless Sensor Networks

Author: ZhangLei
Tutor: DengHuBin
School: East China Jiaotong University
Course: Applied Computer Technology
Keywords: WSN ZigBee Protocol Location System Control System
CLC: TN929.5
Type: Master's thesis
Year: 2012
Downloads: 72
Quote: 0
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Abstract


With the rapid development of embedded systems, network systems, sensor systems andmicro-control systems, in the21st century, they will bring one of most popular technologies-wireless sensor network systems into a new era. The so-called wireless sensor network (WSN)is a information system, in the regions of interest to us, which are randomly thrown numeroussmall, low cost, low power, low-rate sensor nodes communicating via wireless modules.Wireless sensor networks are mainly used in physical information collection systems in themonitoring area and in a number of industrial automation and control systems. As theadvantages of wireless sensor networks, the applications based on WSN is becoming moreand more widespread, whether in the information collection system or automated controlsystem, various physical information is important, but where is the physical information fromshould be the most concerned things, it is apparent that position and collection systems basedon WSN are more worthy of study, which will become the core technology of WSN.In this paper, the research of WSN positioning system is based on IEEE802.15.4andZigBee protocol is the core part. To achieve the object we choose the microcontroller fromTexas Instruments CC2430and CC2431and digital temperature and humidity sensors SHT10,combined the embedded technology and he positioning technology based on RSSI (ReceivedSignal Strength Indication). Making the selecting temperature and humidity information formSHT10and collecting RSSI loss of location information through the filter and informationintegration, then use range-free distance positioning algorithm for WSN to achievetemperature and humidity information collection and system position, this method willimprove intelligence and reliability of wireless sensor networks. This positioning system forwireless sensor networks can be widely used in information collecting systems, monitoringsystems and indoor positioning systems.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications
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