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Detección de las principales fases de la marcha mediante los ángulos de las articulaciones del miembro inferior a partir de registros con unidades de medición inercial (IMUs)


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Título :
Detección de las principales fases de la marcha mediante los ángulos de las articulaciones del miembro inferior a partir de registros con unidades de medición inercial (IMUs)
Autor :
Sánchez Nava, Ana Luisa
Tutor:
Iáñez, Eduardo  
Editor :
Universidad Miguel Hernández de Elche
Departamento:
Departamentos de la UMH::Ingeniería de Comunicaciones
Fecha de publicación:
2022-05-02
URI :
https://hdl.handle.net/11000/28562
Resumen :
Actualmente, más de mil millones de personas en el mundo presentan al menos un tipo de discapacidad y la más frecuente, tanto en México como en España, es la físico-motora, que es cuando se tienen problemas para caminar o afección del desempeño motor (OMS, 2020). En este proyecto se desarrolla un a...  Ver más
Currently, more than a billion people in the world have at least one type of disability and the most frequent, both in Mexico and Spain, is physical-motor, which is when they have problems walking or a motor condition (WHO , 2020). In this project, an algorithm is developed using MATLAB to detect the main phases of gait (stance and swing) by ankle and knee joint angles measured during continuous walk in healthy users using inertial measurement units (IMU). The purpose of the project is that in the future these tools can be implemented in rehabilitation therapies in users with physical-motor disabilities. The algorithm processes the signal from the ankle and knee angles to detect the initial and final contacts, since these determine the main phases of gait, where the stance phase represents 60% of the gait cycle and the swing phase the remaining 40%. The procedure of the algorithm that uses the ankle angles consisted of: eliminating the linear trend of the measurement; then, use a second-order low-pass Butterworth filter with a cutoff frequency of 1.8 Hz to use only the most noticeable spectral components at the ankle angles, and finally integrate the signal and apply CWT to obtain a signal at which the initial and final contacts are detected as the minimums and maximums of the signal. The results of different users during continuous walking on the ground have been 60.3±3.0% for the stance phase and 39.6±3.0% for the swing phase in the left leg, and 60.6±3.1% and 39.4±3.1% for the right leg, values similar to those established theoretically. On the other hand, the process that uses the knee angles consisted of: eliminating the linear trend obtained, then the signal was derived and a second-order low-pass Butterworth filter was applied with a cutoff frequency of 2 Hz to use only the most significant spectral components of the knee angles and the initial and final contacts of the user's gait are detected. The results of different users during continuous walking on the ground have been 61.0±1.4% for the stance phase and 39.0±1.4% for the swing phase in the left leg, and 59.7±1.8% and 40.3±1.8% for the right leg.
Palabras clave/Materias:
fases de la marcha
unidades de medición inercial (IMUs)
rehabilitación
ángulos de las articulaciones
Área de conocimiento :
CDU: Ciencias aplicadas: Ingeniería. Tecnología
Tipo de documento :
info:eu-repo/semantics/bachelorThesis
Derechos de acceso:
info:eu-repo/semantics/openAccess
Aparece en las colecciones:
TFG- Ingeniería de Tecnologías de Telecomunicación



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