Cited by 129Context-Aware Activity Recognition SystemsBalance, Gait, and Falls PreventionAdvanced Sensor and Energy Harvesting Materials

Online Fall Detection Using Recurrent Neural Networks on Smart Wearable Devices

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Musci, Mirto, De Martini, Daniele, Blago, Nicola, Facchinetti, Tullio, Piastra, Marco·2021·IEEE Transactions on Emerging Topics in Computing

Abstract

Unintentional falls can cause severe injuries and even death, especially if no immediate assistance is given. A fall detection system aims to detect a fall as soon as it occurs, therefore issuing an automatic assistance request. Wearable embedded sensors are emerging as the most viable solution for continuous monitoring since they are more effective, less intrusive and less expensive than other systems. Tailoring a deep learning method to the requirements of microcontrollers entails matching very stringent constraints in terms of both memory and computational power. In addition, datasets acquired with wearable devices are relatively scarce and not necessarily devised for supervised learning. In this work, we discuss the design of a software architecture based on recurrent neural networks which can be effective for fall detection while running entirely onboard a wearable device. The well-known and publicly-available SisFall dataset was adopted and extended with fine-grained temporal annotations to cope with the supervised training of recurrent neural networks. We then show that an appropriate process of architectural minimization together with accurate hyperparameters selection leads to a workable model which compares favorably with other detection techniques. The embedding of the resulting architecture has been validated using a state-of-art hardware device.

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Crossref · 10.1109/tetc.2020.3027454

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  • LSTMs maintain an internal memory state, allowing the model to distinguish between a 'controlled descent' and a 'sudden drop' based on the velocity history of the movement.

    “Unlike static classifiers, LSTMs maintain an internal memory state, allowing the model to distinguish between a “controlled descent” and a “sudden drop” based on the velocity history of the movement [18].”

    From Safe Fall: Use of Predictive Modeling and Machine Vision Techniques for Fall Analysis and Fall Quality (2026) · cites this paper as [18]

    The Deep Learning Approach and Training and Inference sections describe an LSTM classifier that processes successive accelerometer readings and passes information between cells. The Dataset and Labeling section distinguishes falls from activities such as sitting on a chair. The paper does not say that the model distinguishes a “controlled descent” from a “sudden drop” specifically by using velocity history; its stated input is accelerometer readings. (LLM, conf=0.85)

    Experimental — accuracy not yet measured

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1 of the 56 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. P. Feng, M. Yu, S. M. Naqvi, and J. A. Chambers, "Deep learning for posture analysis in fall detection," in 2014 19th International Conference on Digital Signal Processing, Aug 2014, pp. 12-17.

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Authors
Musci, M., De Martini, D., Blago, N., Facchinetti, T., & Piastra, M.
Affiliations
University of Pavia (IT)
Venue
IEEE Transactions on Emerging Topics in Computing
Published
2021-07-01
Volume
9
Issue
3
Pages
1276-1289
ISSN
  • 2168-6750 (ISSN-L)
  • 2376-4562
OpenAlex
W2797186212
Cited by
128
References
56
Citations by year
2026: 7 · 2025: 17 · 2024: 25 · 2023: 19 · 2022: 21 · 2021: 19 · 2020: 11 · 2019: 8 · 2018: 1
FWCI
6.80
Type
journal article
Language
en
Open access
Locations
  • IEEE Transactions on Emerging Topics in Computing (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
Funders
Regione Lombardia (139625)
Topics
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Context-Aware Activity Recognition Systems
  • Health Sciences › Health Professions › Physical Therapy, Sports Therapy and Rehabilitation › Balance, Gait, and Falls Prevention
  • Physical Sciences › Engineering › Biomedical Engineering › Advanced Sensor and Energy Harvesting Materials
Keywords
fall detection, wearable sensors, recurrent neural networks, embedded deep learning, microcontroller, SisFall dataset, temporal annotation, model compression, hyperparameter optimization, software architecture

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