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Research of Information Acquisition System Based on Wireless Sensor

Author: LiFeng
Tutor: LiMingXue
School: Heilongjiang Institute of Science and Technology
Course: Applied Computer Technology
Keywords: Bluetooth technology GPS Piconet L2CAP
CLC: TP274.2
Type: Master's thesis
Year: 2009
Downloads: 195
Quote: 0
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Abstract


Access to information is the prerequisite information technology , access to information is an important tool for the sensor . The sensor system based on RS232, RS485 and other wired way to build a communication link to be bound by the cable , does not meet the requirements of low -power , low- price and high-performance , and unable to meet the urgent needs of the positioning information . In this context , this paper combined with the practical application of field information collection system in precision agriculture , design a wireless sensor - based information collection system . The system consists of two parts of the data center and the sensor node . By analysis and comparison of several typical short-range wireless communications technology , optional Bluetooth wireless communication technology as the system , Bluetooth communication is the focus of this study . First, the data center and the sensor nodes via Bluetooth piconet composed of a wireless sensor network , followed by a detailed analysis of the traditional polling scheme and adaptive polling scheme piconet scheduling scheme for the project , Furthermore wireless sensor the analysis of network positioning technology , select the GPS as the positioning of the system to reduce the power consumption of the system , and finally through the system into power saving mode in the acquisition and transmission gap . Hardware : the sensor end hardware system based on S3C2410 processor , based on the need to expand the GPS module , Bluetooth module , sensor module , build into the system hardware platforms ; data center hardware is a PC equipped with a Bluetooth hardware . Software : the sensor end embedded Linux platform , the completion of the brightest sensor and GPS data collection procedures , based on the the L2CAP protocol of Bluetooth communication program ; data center to achieve the same sensor Bluetooth communication , developed based on Qt graphics library the user interface, display and save the collected data to the database . The after debugging run and functionality testing , results show that the system is able to achieve the information in the field get fast and accurate positioning , Bluetooth transmission between sensor nodes and data centers , and the system is reliable , simple to operate , easy to install , easy function expansion , completed the design of the predetermined target .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system > Data collection and processing systems
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