MEMS Biomedical Sensor for Gait Analysis

Wahab, Yufridin; Bakar, Norantanum Abu

doi:10.5772/12905

Cited by 7 publications

(7 citation statements)

References 66 publications

(92 reference statements)

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“…Some ultrasonic device can transmit and receive high frequency sound waves using a single device which is also called as a transceiver. Table 1 below shows the specification of the selected ultrasonic sensor in the market for MFC measurement application and the principle of an ultrasonic sensor is shown in An accurate distance can be obtained by measuring the time of flight (t of ) value of the ultrasonic signal as stated in [7]. In using of t of method, after an ultrasound signal is transmitted by a transmitting transducer (transmitter), the distance, l, can be calculated based on the time t, taken by the ultrasound echo to return to the receiver [8].…”

Section: Ultrasonic Sensormentioning

confidence: 99%

Development of Shoe Attachment Unit for Rehabilitation Monitoring

Wahab

Bakar

Anuar

et al. 2014

Procedia Computer Science

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The rehabilitation monitoring is a method to access and identify human body events and the measurements of dynamic and motion parameters involving the lower part of the body. This significant method is widely used in rehabilitation, sports and health diagnostic towards improving the quality of life. Thus, this research focuses on the development of a portable shoe integrated with wireless MEMS-based and recent microelectronic based system. It goes with the custom design package includes ultrasonic sensor, Inertia Measurement Unit (IMU), Xbee wireless signal transmission, microcontroller and power supply unit. The shoe system was tested and proven to satisfy the human movement analysis based on gait parameters which include foot clearance and foot orientation. From this research, it is found that the system was able to measure the movement parameter wirelessly with ease and efficient. Hence, to conclude this system can be used as the best method for real life rehabilitation monitoring system.

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Section: Ultrasonic Sensormentioning

confidence: 99%

Development of Shoe Attachment Unit for Rehabilitation Monitoring

Wahab

Bakar

Anuar

et al. 2014

Procedia Computer Science

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“…While this technique presents very little or no hysteresis, the main practical restrictions arise from its thickness and type of material. Commercial products based on this system include EMED platform systems (Novel, Germany) and Pedar in-shoe systems (Novel, Germany) [10].…”

Section: Sensing Techniques Used In Foot Plantar Pressure Sensorsmentioning

confidence: 99%

“…In general, the required key specifications for a pressure sensor in terms of sensor performance include linearity, low hysteresis, operating frequency of at least 200 Hz, no creep and repeatability, temperature sensitivity (20 ∘ C to 37 ∘ C), specific sensing size, sufficient pressure range, and proper sensor placement [10]. MEMS techniques are a step forward from all already existing sensors.…”

Section: Sensing Techniques Used In Foot Plantar Pressure Sensorsmentioning

confidence: 99%

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MEMS Technology Sensors as a More Advantageous Technique for Measuring Foot Plantar Pressure and Balance in Humans

et al. 2016

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Locomotor activities are part and parcel of daily human life. During walking or running, feet are subjected to high plantar pressure, leading sometimes to limb problems, pain, or foot ulceration. A current objective in foot plantar pressure measurements is developing sensors that are small in size, lightweight, and energy efficient, while enabling high mobility, particularly for wearable applications. Moreover, improvements in spatial resolution, accuracy, and sensitivity are of interest. Sensors with improved sensing techniques can be applied to a variety of research problems: diagnosing limb problems, footwear design, or injury prevention. This paper reviews commercially available sensors used in foot plantar pressure measurements and proposes the utilization of pressure sensors based on the MEMS (microelectromechanical systems) technique. Pressure sensors based on this technique have the capacity to measure pressure with high accuracy and linearity up to high pressure levels. Moreover, being small in size, they are highly suitable for this type of measurement. We present two MEMS sensor models and study their suitability for the intended purpose by performing several experiments. Preliminary results indicate that the sensors are indeed suitable for measuring foot plantar pressure. Importantly, by measuring pressure continuously, they can also be utilized for body balance measurements.

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“…Thus, heat is generated and leads to the photothermal process. The unique characteristic of the excimer laser with 248nm optical wavelength provide high resolution (~1 um) features on the target surface, while the etching process on a silicon substrate within fluential power of 15mJ will create 0.1um to 1um average depth into the sample [5].…”

Section: Excimer Laser Micromahinementioning

confidence: 99%

KrF Excimer Laser Micromachining of Silicon for Micro-Cantilever Applications

Mahayudin¹,

Wahab²,

Hamzah³

et al. 2014

Proceedings of International Electronic Conference on Sensors and Applications

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The conventional photolithography of crystalline silicon techniques is limited to two-dimensional and structure scaling. This can be overcome by using laser micromachine, a technique capable of producing three-dimensional structure and simultaneously avoiding the needs for photomasks. In this paper, we report on the use of RapidX-250 excimer laser micromachine with 248 nm KrF to create in-time mask design and assisting in the fabrication of micro-cantilever structures. Three parameters of the laser micromachine used to aid the fabrication of the micro-cantilever have been investigated; namely the pulse rate (i.e. number of laser pulses per second), laser energy and laser beam size. Preliminary results show that the 35 um beam size and 15 mJ of energy level is the most effective parameter to structure the desired pattern. The parallel lines spacing of the structure can be reached up to 10 um while cutting, holes drilling and structuring the cantilever using the laser beam can be accomplished to as low as 50 um in dimension.

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MEMS Biomedical Sensor for Gait Analysis

Cited by 7 publications

References 66 publications

Development of Shoe Attachment Unit for Rehabilitation Monitoring

Development of Shoe Attachment Unit for Rehabilitation Monitoring

MEMS Technology Sensors as a More Advantageous Technique for Measuring Foot Plantar Pressure and Balance in Humans

KrF Excimer Laser Micromachining of Silicon for Micro-Cantilever Applications

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