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Human gait can be detected by plantar pressure. Previous wireless portable systems were not able to collect and analyze the plantar pressure from both feet simultaneously. In this study, the multi-connection capability of CC2650 Bluetooth low energy (BLE) chip from Texas Instruments was utilized to construct the pressure sensor insoles system. A smart phone application was implemented to receive,...
Balance checking is the method used to measure plantar pressure distribution in two ways, static and dynamic. In static mode, the patient is asked to stand still on the platform with optical sensors for ten seconds. The results show that the centroids of the feet of those who are capable of keeping good balance hardly disperse compare to those who are not. In dynamic mode, the patient keeps on stepping...
The aim of this investigation is to design and construct a demonstrative prototype of a low cost foot planter-pressure scanner that can assess health care providers in diagnosing and monitoring patients who are suffering from foot disorders. The prototype will be designed from a matrix of force sensitive sensors that measure the spread of forces on the plantar surface of the foot. Suitable Graphical...
The foot and ankle contribute significantly to postural control by providing a contact area to the support surface. Persons with visual and neuromuscular disorders have deficits in response to perturbations of balance and often require assistive devices. This work investigated to posture analysis by using plantar pressure measurements coupled with an EMG analog signal processor. The output signals...
Personalized insole design is a novel approach for better quality of daily life. In this study we developed a low-cost foot pressure measurement system elaborated for primary care and community hospitals, subsequently the feature extraction and pattern recognition were carried out in order to assist the clubfoot diagnosis. The original data were obtained from 20 adults with normal feet and 30 patients...
Fall-related injuries, disabilities, and fatalities are known to seriously affect the healthcare and industry sectors. Nevertheless, an abled individual, as well as a trained senior citizen, is believed to be capable of withstanding and overcoming unusual environmental variations in terms of postural stability and balance. Understanding the biomechanics of fall and fall recovery through quantitative...
This paper aims at development of low cost dynamic foot pressure scanner. To estimate the peak pressure points on the foot sole, a study was conducted on a healthy male group. In all, 8 subjects were placed for observation on EMED (from Novel Inc.) foot mat system at different clinics. The data, thus recorded, was analyzed using Novel-Win-Mask software and it is concluded that, on a single pressure...
An abled individual is believed to be capable of withstanding and overcoming the severe tremors of an earthquake as has been ascertained in a previous study. However, the event-related physiological mechanisms of human postural stability during an earthquake are subject to further investigation. Accordingly, the objective of this study is to further characterize postural stability in a simulated environment...
In this paper we describe a wireless wearable system to monitor gait, based on a customized pair of commercial insoles able to collect ground reaction forces by use of 24 embedded cells for each foot. Each insole was combined with a small form factor, low-power Inertial Measurement Unit (IMU) and enabled to communicate via Bluetooth with a base station. We present here the characterization of the...
The duration of a sit-to-stand (SiSt) transfer is a representative measure of a person's status of physical mobility. This paper measured the duration unobtrusively and automatically using a pressure sensor array under a bed mattress and a floor plate beside the bed. Pressure sequences were extracted from frames of sensor data measuring bed and floor pressure over time. The start time was determined...
The measurement of interface pressure between the foot and shoe is important in gait analysis and other health diagnosis. Abnormal pressure may indicate instability in gait, risks of ulceration development especially in diabetic foot as well as have many other biomedical diagnostic applications. However, the currently available foot pressure sensors show a number of weaknesses that limit their performance...
A test was conducted of a Hercules Orthoflex capacitive sensor used to measure pressure distribution under the foot for gait analysis and sensory substitution. Maximal nonlinearity for the sensor is 16%, and maximal hysteresis is 10% over the pressure range 0 to 1.3 MPa. Seven transducers in each shoe determine the distribution of pressure.<<ETX>>
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