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Vol. 32, No. 8(2), S&M2292

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Sensors and Materials
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Sensors and Materials, Volume 37, Number 1(2) (2025)
Copyright(C) MYU K.K.
pp. 117-134
S&M3895 Research Paper of Special Issue
https://doi.org/10.18494/SAM5325
Published: January 22, 2025

Embedded Bed-exit Monitoring System Using Deep Learning [PDF]

Chi-Huang Shih and Yeong-Yuh Xu

(Received August 22, 2024; Accepted December 27, 2024)

Keywords: bed-exit monitoring, deep learning, bed-exit behavior recognition, fall hazard minimization

In this study, we present a practical bed-exit monitoring system designed specifically for healthcare settings, distinguished by its focus on privacy, accuracy, cost, and ease of use. The NVIDIA Jetson Xavier, a compact System-on-Module, powered the system, using a camera serial interface for video data acquisition. Specifically, the presented system aims to recognize the bed-exit behavior from a series of images with narrow fields of view for privacy preservation. Our approach encompasses a three-stage process for detecting, tracking, and classifying human body trunk movements relative to a bed. First, the You Only Look Once (YOLO) algorithm detects the human body trunk within the scene. Following detection, the Simple Online and Real-time Tracking (SORT) algorithm tracks the detected body trunk objects across frames. Finally, deep learning techniques such as long short-term memory (LSTM) or gated recurrent unit (GRU) networks classify the tracked objects’ actions into three categories: getting off the bed, being on the bed, and returning to the bed. Our experimental findings demonstrate that this system achieves a high accuracy rate of 97.97% and operates at a processing speed of 7.1 frames per second. This methodology offers precise bed-exit monitoring and represents a significant step forward in improving patient safety and the efficiency of care in healthcare environments, underscoring its importance in minimizing fall hazards and enhancing patient care quality.

Corresponding author: Yeong-Yuh Xu


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Cite this article
Chi-Huang Shih and Yeong-Yuh Xu, Embedded Bed-exit Monitoring System Using Deep Learning, Sens. Mater., Vol. 37, No. 1, 2025, p. 117-134.



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