title: Preliminary study on verifying the detection of gait intention based on knee joint anterior displacement of gait slopes.
abstract: This study investigated the feasibility of the Infrared (IR) sensor-based walking aids for detecting the gait intention. To compensate for the defects of Force Sensing Resistors (FSRs) or force sensors, such as the velocity control problem on gait slopes, we used IR sensors to investigate knee joint anterior displacement in order to recognize the gait intention. We also measure leg muscle activities and foot pressure, in order to verify our investigation. We placed two IR sensors on the rollator center to sense left and right leg walking intentions. We took EMG signals of four leg muscles, and analyzed them. Foot pressure analysis parameters were the measured force and mean pressure. We conducted experiments on twenty young healthy adults. The results show that knee joint anterior displacement increases according to gait slope and velocity. We confirm similar results of knee joint anterior displacement through the IR sensors.
authors.affiliation: Division of Biomedical Engineering, Chonbuk National University, Jeonju-si, Jeonbuk, Korea.
authors.forename: Changho
authors.initials: C
authors.lastname: Yu
authors.affiliation: Division of Biomedical Engineering, Chonbuk National University, Jeonju-si, Jeonbuk, Korea.
authors.forename: Seung Rok
authors.initials: SR
authors.lastname: Kang
authors.affiliation: Division of Biomedical Engineering, Chonbuk National University, Jeonju-si, Jeonbuk, Korea.
authors.forename: Giltae
authors.initials: G
authors.lastname: Yang
authors.affiliation: Division of Biomedical Engineering, Chonbuk National University, Jeonju-si, Jeonbuk, Korea.
authors.forename: Chul Un
authors.initials: CU
authors.lastname: Hong
authors.affiliation: Department of Healthcare Engineering, Chonbuk National University, Jeonju-si, Jeonbuk, Korea.
authors.forename: Hyung Jong
authors.initials: HJ
authors.lastname: Lee
authors.affiliation: EasyMove Co., Ltd., 230 Anyang-ro, Anyang-si, Gyeonggi-do, Korea.
authors.forename: Do Young
authors.initials: DY
authors.lastname: Oh
authors.affiliation: Division of Biomedical Engineering, Chonbuk National University, Jeonju-si, Jeonbuk, Korea.
authors.forename: Tae Kyu
authors.initials: TK
authors.lastname: Kwon
mesh_terms: D056044:Actigraphy / Q000295:instrumentation; D053587:Arthrometry, Articular / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005260:Female; D005684:Gait / Q000502:physiology*; D006801:Humans; D007259:Infrared Rays; D033182:Intention; D007719:Knee Joint / Q000502:physiology*; D008297:Male; D018670:Monitoring, Ambulatory / Q000295:instrumentation*; D010783:Photometry / Q000295:instrumentation; D010865:Pilot Projects; D016059:Range of Motion, Articular / Q000502:physiology*; D015203:Reproducibility of Results; D012656:Self-Help Devices; D012680:Sensitivity and Specificity; D055815:Young Adult
keywords: EMG; IR sensor; Rollator; foot pressure