Post Disaster Indoor Position Tracking Device with Pulse Detection in Wireless Sensor Networks

Abstract

Wireless sensor networks have a lot of applications and can apply in post-disaster management. The study’s main objective is to develop post-disaster indoor position tracking in wireless sensor networks. It also aims to determine the estimated indoor position of the wrist strap wearer using the distance measuring technique. NodeMCU ESP8266 was used to pass along the RSSI values and send them to the sink node located outside the establishment, and viewing the GUI from the sink node. The researchers tested the calculated distance at various distances by getting RSSI values from the fixed node to determine the distance measurement formula. The researchers did the same testing in different scenarios: no obstructions, large obstructions. At one meter, the average calculated distance at fixed node 1 was 1. 2598m for no obstructions and 2. 1061m for large obstructions. This meant that the RSSI generated with large obstructions was becoming smaller. The sample standard deviation also suggested that the distance also affected how spread the RSSI values at longer distances