Development of Bed Exit Notification System via Long Range Wireless Sensors

Abstract

This research aims to develop a wireless remote sensor system for tracking and detecting bed-out disorders in patients or the elderly with brain problems who often gets out of bed at night or does not get back to bed for unusually long. The system can alert the caregiver via wireless sensors and alerts to the caregiver's smartphone for timely assistance. The researchers designed and developed a wireless sensor system for measuring the relative force acting on the legs of the bed with a Force Sensitive Resistor (FSR) sensor. The results showed that using the FSR sensor can provide electrical values ​​similar to that of a digital multimeter.  The leg pressure sensor test can be combined with a force model to detect get out of bed and return accurately. When an anomaly is detected, the system can correctly notify the caregiver via the wireless device and Line Notify.