Implementation of a wsn for georreferencing and generation of alerts of persons in zones without cellular coverage

Abstract

The design and construction of a prototype of wireless communication for georeferencing and generation of alerts was made, which is composed of: Sensor Node, Router Node and Coordinating Node. The network was structured with the mesh type topology, which allows obtaining the information of georeferencing, speed, height obtained from the GPS and the alerts generated by the user. An application was developed in the Visual Studio Community package that allows the administrator to enter the information of the carriers to a database as well as the route automatically, showing it in a georeferenced map, the graphic interface allows the search of the stored information and its export. It was shown that the prototype implemented can cover 500m2 in mountainous terrain and 4500m2 in flat terrain with a reception power between -72.3 dBm and -75.9 dBm, showing a reception margin between 28.7 dB and 25.1 dB. The network has a capacity of 128 devices covering 213% of the current capacity required. The GPS device has a location error of ± 2.5 meters, a speed of ± 0.1 m / s and a height of ± 20 meters, demonstrating that the prototype does not include any error in the sensors. The energy autonomy is 16 hours covering 400% of the normal time of a visitor's journey. It is concluded that the implemented prototype can become a help tool to facilitate the location of people that require assistance within the Reserve, thus fulfilling the national security objectives.