Innovative head-mounted system based on inertial sensors and magnetometer for detecting falling movements

Chih Lung Lin, Wen Ching Chiu, Ting Ching Chu, Yuan Hao Ho, Fu Hsing Chen, Chih Cheng Hsu, Ping Hsiao Hsieh, Chien Hsu Chen, Chou Ching K. Lin, Pi Shan Sung, Peng Ting Chen

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


This work presents a fall detection system that is worn on the head, where the acceleration and posture are stable such that everyday movement can be identified without disturbing the wearer. Falling movements are recognized by comparing the acceleration and orientation of a wearer’s head using prespecified thresholds. The proposed system consists of a triaxial accelerometer, gyroscope, and magnetometer; as such, a Madgwick’s filter is adopted to improve the accuracy of the estimation of orientation. Moreover, with its integrated Wi-Fi module, the proposed system can notify an emergency contact in a timely manner to provide help for the falling person. Based on experimental results concerning falling movements and activities of daily living, the proposed system achieved a sensitivity of 96.67% in fall detection, with a specificity of 98.27%, and, therefore, is suitable for detecting falling movements in daily life.

Original languageEnglish
Article number5774
Pages (from-to)1-16
Number of pages16
JournalSensors (Switzerland)
Issue number20
Publication statusPublished - 2020 Oct 2

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Information Systems
  • Atomic and Molecular Physics, and Optics
  • Biochemistry
  • Instrumentation
  • Electrical and Electronic Engineering


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