Viloc: An Android Mobile App Used for Indoor-Trapped Victim Location Visualization

Abstract

In cases of disasters, such as earthquakes or fires occurring in urban or industrial areas, it is often to find conditions that trap victims in buildings. Under these conditions, the process of tracking and finding victims becomes critical. However, currently available solutions to find trapped victims still have several limitations, particularly the capabilities, accessibilities, and availabilities of supporting tools. This limitation raises the need for a new solution to support rescue teams by quickly, accurately, and intuitively providing location information of victims. Viloc is a native Android mobile application aimed to assist rescue teams in finding indoor-trapped victims. To achieve this goal, Viloc requires to receive, manage, process, and visualize data quickly, precisely, and intuitively. Based on the scope of its functionalities, Viloc as a system comprises three modules: Cloud Server module, Mobile Application, and Data Processing & Visualization. Functional and performance testing shows that Viloc has successfully executed all its functionalities and met the specified performance specifications. In addition, the usability testing gave results as follows: 96.67% completion rate, 98.18% overall relative efficiency, and 87.46% user satisfaction rate.