Ivón Escobar

Virtual System for Upper Limbs Rehabilitation in Children

A virtual system is presented for upper limbs rehabilitation in children using a haptic device and oculus rift. Two interactive games were created in Unity 3D with daily tasks and easy execution. In addition, the virtual system was used by two groups of children (CP and Down Syndrome) with mild spasticity, the same ones who performed the exercise. The movements allowed by the system help in the rehabilitation of the hands and in hand-eye coordination. The participants completed a SEQ usability test with results (52 ± 0.43) by group 1 and (53,5 ± 0,72) by group 2. The outcomes allow determining that the system has a good acceptance to be used in rehabilitation. Children in group 2 (Down Syndrome) achieved to manage the system successfully despite intellectual and ocular difficulties.

3D Virtual System Using a Haptic Device for Fine Motor Rehabilitation

It is presented a 3D Virtual system with a haptic device that allows the interaction between a user and a virtual environment developed in Unity3D. This System was designed for rehabilitation of paretic hands in adult people with Stroke; the virtual environment was developed considering a daily life’s activity (watering plants in pots). The system was used by five people with mild and moderate Stroke according to ASWRTH 1+ scale, which completed the exercise showed in the virtual application. Patients performed a usability test SUS with outcomes (79, 5 ± 3, 67) this allows to define that the system has a good acceptance for rehabilitation.

Artificial Vision Techniques to Optimize Strawberry's Industrial Classification

This research presents novel artificial vision techniques applied to the detection of features for strawberries used in the food industry. For this purpose, a computer vision system based in artificial neural networks is used, organized as a deep architecture and trained with noise compensated learning. This combination originates a strong network - object relations which makes possible the recognition of complex strawberry features under changing conditions of lightning, size and orientation. The programming uses OpenCV libraries and fruits databases captured with a webcam. The images used to train the Artificial Neural Network are defined with canny edge detection and a moving region of interest (ROI). After training, the network recognizes important features such as shape, color and anomalies. The system has been tested in real time with real images.

VRAndroid System Based on Cognitive Therapeutic Exercises for Stroke Patients.

It is presented VRAndroid System designed in Android and implemented on an Android Tablet, the system consists in a set of nine shapes based on cognitive therapeutic exercises for the motor rehabilitation in upper limbs, this tools provides perceptive feedback (vibration) to the patient as he follows the correct shape with his finger. There are two performed rehabilitation phases: (1) Through the Perffeti Technique (15 sessions), (2) Through VRAndroid System (15 sessions), the evolution and results of the rehabilitation are evaluated by the BOX AND BLOCK test, which shows that, the rehabilitation through this techniques help in the motor recovery of the upper limbs, moreover, the VRAndroid System is a useful tool to be used as a traditional rehabilitation supplement.

Construction and analysis of PID, fuzzy and predictive controllers in flow system

This paper presents the construction of a flow station that allows the implementation of different advanced control technique. Furthermore this work focuses on comparing of the performance of traditional PID controllers, Fuzzy logic and predictive MPC when controlling the flow dynamic variable and to analyze the advantages and disadvantages of these control strategies in industrial processes. The characteristics of the controllers are tested both in simulation and experimentation with dedicated software in systems analysis.

Implementación de una herramienta didáctica para el diagnóstico de válvulas de control

This paper presents the implementation of a tool of low cost for the diagnosis of control valves, aimed at the identification and analysis of the performance of such elements and used them for the education in Engineering. It was implanted a HART network that allows the communication with the positioner of the valve, and it was also built a display interface made in Labview in order to obtain information key data of the control valves, including diagnosis in line and off line.

Didactic System for Process Control Learning: Case Study Flow Control.

It is presented a didactic system for the process control learning, it is considered as a practical case the flow control; four stages are considered for the implementation. The first stage allows obtaining the mathematical model of the plant under test, the second stage allows the design of the PID control and selection of the tuning method, the third and fourth stages allow to implement the control designed to verify experimentally the response of the developed controls.

3D Virtual System for Strengthening Lower and Upper Limbs in Children

A virtual system is presented for child limb strengthening by using the Kinect device. An interactive environment was created using Unity 3D in order to perform movements with upper and lower limbs. The system was tested by one user, the same one performed every exercise correctly, and this helped to strengthen the affected area. Additionally, graphs were generated to compare therapist movements as an input signal versus user movements as an output signal.

Fine Motor Rehabilitation of Children Using the Leap Motion Device – Preliminary Usability Tests

A 3D virtual system is presented using the leap motion device and Unity 3D software. The system is based on three playful tasks that allow children to recover their fine motor skills in an entertaining way. This system is designed to perform movements like flexion-extension of fingers, supination-pronation, ulnar and radial deviation. The games stimulate visual motor coordination and concentration, which are important factors in the recovery of fine motor skills. The system was used by ten children aged between 6 and 10 years and they have the support of a rehabilitation specialist. After they have completed all the tasks, the SEQ (Single Ease Question) usability test was applied with results (60.8 ± 0.26). The test allows determining that the system has a good acceptance to be used in rehabilitation.

3D Virtual System Based on Cycling Tracks for Increasing Leg Strength in Children

A 3D virtual system based on cycling tracks is presented. The virtual environment is developed in Unity 3D. Two games are created with different levels of difficulty. The system is created for improving strength, resistance and muscle activation in children. Operation tests and usability are performed in four children between 5 and 9 years old. After the usability surveys SEQ, the outcomes (54.5 ± 0.34) shows that users feel immersed and enjoy the game. The system motivates the user to continue using it.