Activity recognition and anomaly detection for the elderly with dementia by using passive RFID sensor tags

In recent years, the number of demented patients besides the elderly living alone has been increasing in Japan. This study proposes a monitoring system that recognizes the behavior of the elderly with dementia living alone and detects their anomalies. To alleviate a mental and physical burden on the elderly, our monitoring system adopts RFID sensor tags embedded in their living environment. Our experiments have ensured the feasibility of implementation and demonstrated that by detecting anomalies with changes in the sensor data. The results have demonstrated that our system can exactly detect the remaining amount in a trash box and of a meal.