An Ankle Joint Flexion and Extension Movement-Monitoring Device Based on Pressure Sensors

Ankle joint flexion and extension movements play an important role in the rehabilitation training of patients who have been injured or bedridden for a long time before and after surgery. Accurately guiding patients to perform ankle flexion and extension movements can significantly reduce deep vein t...

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Main Authors: Chunying Xu, Yu Zhou, Jian Ji, Chuliang Wei
Format: Article
Language:English
Published: MDPI AG 2023-11-01
Series:Micromachines
Subjects:
Online Access:https://www.mdpi.com/2072-666X/14/12/2141
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author Chunying Xu
Yu Zhou
Jian Ji
Chuliang Wei
author_facet Chunying Xu
Yu Zhou
Jian Ji
Chuliang Wei
author_sort Chunying Xu
collection DOAJ
description Ankle joint flexion and extension movements play an important role in the rehabilitation training of patients who have been injured or bedridden for a long time before and after surgery. Accurately guiding patients to perform ankle flexion and extension movements can significantly reduce deep vein thromboembolism. Currently, most ankle rehabilitation devices focus on assisting patients with ankle flexion and extension movements, and there is a lack of devices for effectively monitoring these movements. In this study, we designed an ankle joint flexion and extension movement-monitoring device based on a pressure sensor. It was composed of an STM32 microcontroller, a pressure sensor, an HX711A/D conversion chip, and an ESP8266 WiFi communication module. The value of the force and the effective number of ankle joint flexion and extension movements were obtained. An experimental device was designed to verify the accuracy of the system. The maximum average error was 0.068 N; the maximum average relative error was 1.7%; the maximum mean-squared error was 0.00464 N. The results indicated that the monitoring device had a high accuracy and could effectively monitor the force of ankle flexion and extension movements, ultimately ensuring that the patient could effectively monitor and grasp the active ankle pump movement.
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spelling doaj.art-ac68e68f82af4094ae0b3af9795e06cb2023-12-22T14:25:12ZengMDPI AGMicromachines2072-666X2023-11-011412214110.3390/mi14122141An Ankle Joint Flexion and Extension Movement-Monitoring Device Based on Pressure SensorsChunying Xu0Yu Zhou1Jian Ji2Chuliang Wei3School of Engineering, Shantou University, Shantou 515063, ChinaSchool of Engineering, Shantou University, Shantou 515063, ChinaZhejiang Provincial Institute of Marine Development and Research, Zhoushan 316100, ChinaSchool of Engineering, Shantou University, Shantou 515063, ChinaAnkle joint flexion and extension movements play an important role in the rehabilitation training of patients who have been injured or bedridden for a long time before and after surgery. Accurately guiding patients to perform ankle flexion and extension movements can significantly reduce deep vein thromboembolism. Currently, most ankle rehabilitation devices focus on assisting patients with ankle flexion and extension movements, and there is a lack of devices for effectively monitoring these movements. In this study, we designed an ankle joint flexion and extension movement-monitoring device based on a pressure sensor. It was composed of an STM32 microcontroller, a pressure sensor, an HX711A/D conversion chip, and an ESP8266 WiFi communication module. The value of the force and the effective number of ankle joint flexion and extension movements were obtained. An experimental device was designed to verify the accuracy of the system. The maximum average error was 0.068 N; the maximum average relative error was 1.7%; the maximum mean-squared error was 0.00464 N. The results indicated that the monitoring device had a high accuracy and could effectively monitor the force of ankle flexion and extension movements, ultimately ensuring that the patient could effectively monitor and grasp the active ankle pump movement.https://www.mdpi.com/2072-666X/14/12/2141ankle pump movementankle joint flexion and extension movement monitoringpressure sensorSTM32
spellingShingle Chunying Xu
Yu Zhou
Jian Ji
Chuliang Wei
An Ankle Joint Flexion and Extension Movement-Monitoring Device Based on Pressure Sensors
Micromachines
ankle pump movement
ankle joint flexion and extension movement monitoring
pressure sensor
STM32
title An Ankle Joint Flexion and Extension Movement-Monitoring Device Based on Pressure Sensors
title_full An Ankle Joint Flexion and Extension Movement-Monitoring Device Based on Pressure Sensors
title_fullStr An Ankle Joint Flexion and Extension Movement-Monitoring Device Based on Pressure Sensors
title_full_unstemmed An Ankle Joint Flexion and Extension Movement-Monitoring Device Based on Pressure Sensors
title_short An Ankle Joint Flexion and Extension Movement-Monitoring Device Based on Pressure Sensors
title_sort ankle joint flexion and extension movement monitoring device based on pressure sensors
topic ankle pump movement
ankle joint flexion and extension movement monitoring
pressure sensor
STM32
url https://www.mdpi.com/2072-666X/14/12/2141
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