bharat wisenet

8/8/2019 bharat WISENET

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WISENET

By: Bharat SinghM.Tech. CSE


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DefinitionWISENET is a wireless sensor network that monitors theenvironmental conditions such as light, temperature, andhumidity. This network is comprised of nodes called motesthat form an ad-hoc network to transmit this data to acomputer that function as a server.


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Data AcquisitionThe purpose of this subsystem is to collect and storeenvironmental data for later processing by the Data Analysissubsystem. This is a mix of both PC & embedded systemsoftware, as well as embedded system hardware. It iscomposed of both the Server and Sensor Mote Network components.


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System Components


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Client Component

The Client component is necessary but external to thedevelopment of WISENET. That is, any computer with a web

browser and Internet access could be a Client. It served only asa user interface to the Data Analysis subsystem.


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Client Component


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Server Component

The Server is a critical component as the link between the Data

Acquisition and Data Analysis subsystems. On the DataAnalysis side, an web (HTTP) server hosting a web application.When a page request came in, the web server executes the webapplication, which retrieved data from the database, processesit, and returns a web page that the web server transmitted to theClient.


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Server Component


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Server component block Diagram.


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Sensor Mote ComponentThis component consists of two parts.The first is tthe sensor mote. The primary purpose of thesensor mote is to collect and transmit raw environmental data.When not doing this, it went into a low-power idle mode toconserve energy. Another aspect of the sensor motes involvedadhoc networking and may be for multi-hop routing;The gateway mote is the second part of the Sensor Mote

Network. Its purpose is to serve as the liaison between theServer and the Sensor Mote Network and deliver all the data

packets to WiseDB. In theory both standard and gatewaymotes could be implemented on the same hardware PCB andwith the same software.


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Sensor Mote Component


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Hardware

1. Optimized 8051-core2. Active (14.8 mA), Idle (29 _A) and sleep (0.2 _A) power modes3. 32 kB flash memory4. 2 kB +128 bytes SRAM5. Three channel 10-bit ADC6. Hardware DES encryption/decryption7. Hardware random bit-generator


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SoftwareA pache is a standard web-server, which makes a webdocument available on the Internet.

PHP is a web programming language, which allows dynamic

web-pages. It should also be designed to use along with adatabase and included many built-in functions for interfacingwith MySQL.

MySQL is a database that can contain any type of data and is

accessed by a TCP/IP (Internet) call.

Chart-Director is a program that generates a graph from rawdata. It is available in many languages such as PHP, ASP, C++,and others.


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References1.Ramesh, M. V., Real-time Wireless Sensor Network for LandslideDetection, Proceedings of The Third International Conference on Sensor Technologies and Applications, SENSORCOMM 2009, IEEE, Greece,June 18 - 23, 2009

2.Atkinson, MySQL++: A C++ API for MySQL, vers 1.7.9,.

3.Gay Levis, The nesC Language: A Holistic Approach to Network Embedded Systems, .4.Mainwaring, Polastre, et al. Wireless Sensor Networks for Habitat

Monitoring, http://www.cs.berkeley.edu/~polastre/papers/wsna02.pdf 5. Ye, Heidemann, et al. An Energy-Efficient MAC Protocol for WirelessSensor Networks, http://www.isi.edu/%7Eweiye/pub/smac_infocom.pdf


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