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Testbed for Sensor Networks


 
 
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 Testbed

 
 
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Architecture

The architecture of the testbed is shown below:


 

The testbed is composed of three parts: core network, core access network, and sensor field.  The core network is the backbone of the overall sensor network.  It consists of the wireless local area network (WLAN), Internet, and/or satellite networks.  The core access network is made up of NSAPs, i.e., sinks of the sensor network, which are emulated by the laptops.  The NSAPs integrate the protocols used in the core network with the ones used in the sensor network.  The sensor field is the area, where the RAS (route, access, and sense) nodes are deployed.  Each RAS node can be either mobile or static with the following combination of components: 

(i) MPR300CA MICA process/radio board: TinyOS distributed software operating system, Atmel Atmega 103L processor (operating at 4 MHz with 128 KB of internal flash), 4 KB external SRAM, 4 KB external EEPROM, RFM TR1000 916 MHz radio transceiver at maximum 50 Kb/s, and 51-pin expansion connector for MICA sensors. 

(ii) MTS310CA MICA light, temperature, acoustic actuator, magnometer, and accelerometer sensors. 

(iii) Laptops with WLAN and 916 MHz radio transceiver.

(iv) Video and audio capturing devices.

(v) Differential Global Positioning System (GPS).

(vi) Remote control cars or brownian motion cars.
 

Pictures of the testbed are given below: