C. Bharathi Priya,Sreeja B. P,Madhumitha Ramamurthy,




ZigBee,Cyber-Physical Systems,RSSI,Parent node,


Wireless sensor networks (WSNs) comes under a kind of ad-hoc networks where network nodes hold sensors on board and sense diverse factors around deployed region. WSN turns to be extremely popular owing to its diverse applications nature comprising cyber-physical systems, disaster relief, precision agriculture, rescue operation, healthcare and object tracking in terrestrial environment to examine physical factors of space applications, human and so on. Enormous applications utilize sensor nodes based location information as inherent features. This information is more essential to recognize spatial co-ordinates of data origination. Extensively, localization approaches are categorized into range free and range based approaches. In this busy world, it is difficult for the parents to control child movements in crowded places.  There is a substantial risk that the child may get lost in the crowd. This has motivated to propose a solution to track the child movement in the crowded area like shopping mall, theatre, Play station etc. This proposed system helps to track the location of the child in In-Door environment using range-based localization technique.  RSSI is a parameter used to estimate the child location and communicate its position to parents.  Child and parents are considered as nodes, child would be wearing ZigBee  and GSM modules which periodically sends signals to the parent node. If the child gets moved away from parent, then parent receive the accurate location of the child and track the children within a range. With the use of distance measurement, position of children will be computed, and location of child is informed to parents.


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