International Journal of Innovative Research in Science, Engineering and Technology (IJIRSET)
Data collection process is one of the important aspects in the design consideration for future analysis in wireless sensor networks. Energy consumption by parent node increases due to continuous forwarding of sensed data from their respective child nodes especially in the tree based topology. Once the energy in the parent nodes was completely drained off, some of the child nodes get isolated/ partitioned from the sink node. The proposed data collection method involves deployment of multiple mobile robots whose responsibility is to collect the data from the nodes whose energy is below the threshold value.