Implementation and evaluation of child's location history transportation device for potentially dangerous area detection
Kazunori Omura Hiroyuki Nonomura, Katsuhiro Naito, Tadanori Mizuno, Katsuhiko Kaji · 2017
Driven by the explosive spread of smartphones and Bluetooth Low Energy (BLE) beacons, systems that combine these devices are being used to manage the location of people and things and commercialize child monitoring systems. The information obtained by a parent or guardian in existing monitoring systems, however, indicates only that the child and a monitoring person have passed each other and the time and place of that pass-by. Considering such information to be insufficient for child monitoring, we developed a beacon device incorporating a GPS module and investigated a monitoring system using this device. Specifically, we proposed a method for detecting a " potentially dangerous area" that we define as some area where children are playing with no monitoring adults present within a larger specified zone. We also proposed a method for obtaining a child's route and location history. In an experiment using a prototype beacon device and smartphone application, we observed the amount of data transmitted and transmission success rate when performing pass-by communications. It was found that 53.5 seconds were needed on average to transfer 120 records of GPS data and that transmissions could be successfully performed at a distance of approximately 80 meters. For a single device/smartphone pass-by, a transmission lasting about 70 seconds could be made and approximately 160 records of GPS data could be transferred.