E-Sense: Kapalı alanlarda ortamı gözleme amaçlı kablosuz algılayıcı ağı test alanı ve sistemi

Wireless sensor networks consist of small, smart and battery-powered devicessuitable for widespread deployment to monitor an environment by taking physicalmeasurements. Wireless sensor nodes are deployed over an area in a randommanner. They need to self-establish a wireless multi-hop network and routingpaths from all sensor nodes to a central base station. In this thesis, we presentour E-Sense system, a wireless sensor network testbed consisting of MICA2 sensornodes which can be used to monitor an indoor environment like oce buildingsand homes. The testbed can be accessed through the Internet and provides a webbasedinterface to the sensor network. The users of the network can be locatedat any point in the Internet. Via the web based interface, the users can submitvarious types of queries to the sensor network and get the replies including thephysical measurement results.The E-Sense system also includes a distributed and energy-aware routing protocolthat we designed and implemented. The protocol aims ecient and balancedusage of energy in the sensor nodes to prolong the lifetime of the network. Therouting protocol is based on a many-to-one routing tree where each node independentlydetermines its next parent depending on the values of RSSI (ReceivedSignal Strength Indicator). The protocol can also adjust the transmit power tofurther decrease the energy spent in each sensor node. The testbed will be usefulfor experimental studies at both application and network levels.