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02591nam a2200433Ia 4500 |
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10.3390-s22093551 |
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220706s2022 CNT 000 0 und d |
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|a 14248220 (ISSN)
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| 245 |
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|a Development of an IoT Electrostimulator with Closed-Loop Control
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|b MDPI
|c 2022
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| 856 |
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|z View Fulltext in Publisher
|u https://doi.org/10.3390/s22093551
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|a The most used approach in the motor rehabilitation of spinal cord injury is functional electrical stimulation. However, current devices do not provide real-time feedback, work in the closed-loop, and became remotely operable. In this scenario, this paper presents the development of an open access 4-channel IoT electrostimulator device with an inertial sensor. The electrostimulator circuit was designed with four modules: Boost Converter, H-bridge, Inertial Measurement Unit, and Processing Module. The firmware was implemented in the processing module to manage the modules to perform closed-loop stimulation (using PID controller). To perform the proof of concept of the device, a closed loop test was performed to control the ankle joint, performing the movements of dorsiflexion, plantar flexion, inversion, and eversion. The designed hardware allowed one to freely change the boost converter voltage and modulate the signal with 200 µs of pulse duration and 50 Hz of period in a safe and stable way. Furthermore, the controller was able to move the ankle joint in all desired directions following the reference values and respecting the imposed constraints. In general, the developed hardware was able to safely control a closed-loop joint. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
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|a Ankle joints
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|a BOOST converter
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|a Bridge circuits
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|a Closed loop control systems
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|a Closed-loop
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|a closed-loop control
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|a Closed-loop control
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|a Controllers
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|a DC-DC converters
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|a electrostimulation
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|a Electrostimulation
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|a Firmware
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|a Functional electric stimulation
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|a Internet of things
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|a medical device
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|a Medical Devices
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|a Motor rehabilitation
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|a Processing modules
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|a rehabilitation
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|a Sensor in healthcare
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|a sensors in healthcare
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|a Spinal cord injury
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|a Three term control systems
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|a Borges, L.H.B.
|e author
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|a Dantas, A.F.O.A.
|e author
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|a De Almeida, T.F.
|e author
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| 773 |
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|t Sensors
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