Thamarak Khampeerpat

Undergradated

Long-term deployment of wireless sensor networks for environmental monitoring sometimes exhibit undesirable data losses. This is due to the fact that wireless links may become unreliable under certain conditions, or intermediate nodes or the gateway stop working. This paper presents the development of data logging in the wireless sensor network with reliable transmission. Each sensor node measures environmental data and stores them locally in its built-in EEPROM, then attempts to reliably transfer the data to the gateway using stop-and-wait protocol. Experimental results show that the improved system can almost guarantee no data loss at the gateway under various link reliability conditions with acceptable overhead.

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