A Highly Reliable Ultrasonic Sensor-Based Bed-Exit Detection System for the Elderly With Early Notification

Chih Lung Lin, Po Ting Lee, Yuan Hao Ho, Zong Lin Yang, Yu Hsien Lu, Chi Yuan Chan, Pi Shan Sung

研究成果: Article同行評審

摘要

This letter presents a real-time bed-exit alarm system using ultrasonic sensors, infrared (IR) sensors, and an accelerometer. The ultrasonic sensors detect the elderly in bed; the IR sensors detect the motion of the elderly across the gap at the end of the bed; and the accelerometer detects the bed rail being lowered. To achieve early notification, one-against-one support vector machine classifiers are implemented to recognize the early stages of bed-exit events with a sensitivity of 97.7% and a precision of 93.8%. The proposed system is verified with ten elderly subjects and provides an average lead time of 11.4 s for real bed-exit events, indicating that the proposed system has the ability to issue early warnings to caregivers for immediate assistance.

原文English
頁(從 - 到)1-4
頁數4
期刊IEEE Sensors Letters
8
發行號1
DOIs
出版狀態Published - 2024 1月 1

All Science Journal Classification (ASJC) codes

  • 儀器
  • 電氣與電子工程

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