Real-time foot clearance and environment estimation based on foot-mounted wearable sensors

Takahiro Ishikawa, Toshiyuki Murakami

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The ambulatory gait monitoring systems (AGMS) using wearable devices have a great attention for health monitoring of individuals. Foot clearance is one of gait parameters and an indicator of gait quality and safety. Conventionally, foot clearance is calculated by post-processing using several methods such as extended Kalman filter (EKF), a weighted Fourier linear combiner (WFLC), a simple biomechanical foot model, zero velocity update (ZVU), and optimally filtered direct and reverse integration (OFDRI). However, real-time foot clearance (FC) estimation is required to apply to control of neural prostheses and assistive devices to prevent falling down. In addition, since humans adapt to several environments during gait motion, walking patterns are different among leveled walk, ramp walk, and stair walk. Therefore, environmental recognition also has an important role for the devices. Aim of this study is an implication of a system which performs real-time foot clearance and environment estimation in several situations. Different configurations of infrared (IR) distance sensors are utilized with a foot-mounted inertia measurement unit (IMU: an acceleration sensor, a gyro sensor, a magnetometer, and an air pressure sensor) sensor. Two IR sensors are attached to both sides of a shoe with different orientation. Developed system is tested in case of leveled walk, ramp walk, and stair walk. As the result, the developed system can estimate foot clearance and find characteristics of walking in different gait motion.

Original languageEnglish
Title of host publicationProceedings
Subtitle of host publicationIECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages5475-5480
Number of pages6
ISBN (Electronic)9781509066841
DOIs
Publication statusPublished - 2018 Dec 26
Event44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018 - Washington, United States
Duration: 2018 Oct 202018 Oct 23

Publication series

NameProceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society

Conference

Conference44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018
CountryUnited States
CityWashington
Period18/10/2018/10/23

Fingerprint

Clearance
Walk
Gait
Real-time
Sensor
Sensors
Stairs
Neural prostheses
Infrared radiation
Units of measurement
Monitoring
Extended Kalman filters
Pressure sensors
Magnetometers
Infrared Sensor
Pressure Sensor
Motion
Health Monitoring
Monitoring System
Post-processing

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering
  • Control and Optimization

Cite this

Ishikawa, T., & Murakami, T. (2018). Real-time foot clearance and environment estimation based on foot-mounted wearable sensors. In Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society (pp. 5475-5480). [8592894] (Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IECON.2018.8592894

Real-time foot clearance and environment estimation based on foot-mounted wearable sensors. / Ishikawa, Takahiro; Murakami, Toshiyuki.

Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society. Institute of Electrical and Electronics Engineers Inc., 2018. p. 5475-5480 8592894 (Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ishikawa, T & Murakami, T 2018, Real-time foot clearance and environment estimation based on foot-mounted wearable sensors. in Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society., 8592894, Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, Institute of Electrical and Electronics Engineers Inc., pp. 5475-5480, 44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018, Washington, United States, 18/10/20. https://doi.org/10.1109/IECON.2018.8592894
Ishikawa T, Murakami T. Real-time foot clearance and environment estimation based on foot-mounted wearable sensors. In Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society. Institute of Electrical and Electronics Engineers Inc. 2018. p. 5475-5480. 8592894. (Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society). https://doi.org/10.1109/IECON.2018.8592894
Ishikawa, Takahiro ; Murakami, Toshiyuki. / Real-time foot clearance and environment estimation based on foot-mounted wearable sensors. Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society. Institute of Electrical and Electronics Engineers Inc., 2018. pp. 5475-5480 (Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society).
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