Design Of Virtual Reality System For Upper Limb Rehabilitation Training Based On Goal Guidance

Stroke disease is currently an important cause of death and disability in our country.According to medical research,a considerable number of patients with physical disabilities can be recovered through rehabilitation training.However,the traditional recovery treatment is a continuous repeated and slow process,and patients are easily bored and lose their enthusiasm for training.The goal-based upper limb rehabilitation virtual reality training system adopts effective means to ensure the scientificity and fun in training process of the system,improve the enthusiasm and initiative of patients in rehabilitation training,and thus improve the efficiency of rehabilitation training and the effect of rehabilitation treatment.This article aims at rehabilitation patients with certain athletic ability above Brunnstrom stage Ⅲ,maps the upper limb rehabilitation task to the target-led upper limb athletic behavior in the virtual scene,and combines the Kinect sensor to monitor the joint movement of the rehabilitation training,designed the virtual reality upper limb rehabilitation training system to guide patients for active rehabilitation training,the specific work is as follows:This article firstly completed requirements analysis for the entire system,and defined and designed the main functions of the virtual reality upper limb rehabilitation training system and management system.Through clinical investigations,the clinical rehabilitation plan with the shoulder and elbow joints as the training targets was selected as the design basis,and this article designed task training and game training modes according to the training objectives of the clinical physiotherapy and occupational therapy departments.The two training modes correspond to three training movements respectively,including elbow flexion/extension movement designed according to joint motion suppression training,shoulder flexion/extension and shoulder joint abduction/adduction movement designed according to separate exercise intensive training,and the comprehensive training designed according to the purpose training,a parameter mapping model of spatial coordinate position is established.This project combines the 3Ds Max platform with Cinema 4D tools to build a virtual human model and virtual scene model,providing virtual supermarket scenes and tasks to achieve virtual task training and interaction.The system uses Kinect to collect external human motion data,and utilizes the SDK to build the information data channel between Kinect data and the virtual training scene in the Unity3 D platform.The system collects data through the interface and analyze the data.Patients can perform somatosensory control on the virtual model in the Unity environment.At the same time,the system can guide and monitor the rehabilitation training process,and it can adaptively adjust the training difficulty and compensatory movements based on the information monitored.Patients can complete multiple rehabilitation training tasks according to the guidance of the virtual scene.The system combines the patient’s upper extremity movement data and the completion of the training task to comprehensively evaluate the patient’s rehabilitation training.Finally,this article achieve system integration.It uses the Qt platform combined with the SQLite database to develop a management system for overall scheduling,which completed patient information management and system regulation functions.It can enter,save and manage patient data and provide reference data of the training to help the doctor grasp the training status of the patient and adjust the training prescription in time to optimize the rehabilitation training effect.In order to achieve a closed-loop training-feedback-adjustment-training program.This article designs scientific virtual training tasks based on clinical rehabilitation programs,and combines Kinect equipment to complete information management,data collection and processing,somatosensory control and training monitoring to incentivize users to perform rehabilitation training.The functional test of the management system and virtual training software proves that the virtual reality upper limb exercise rehabilitation training system studied in this topic is both scientific and interesting.The system runs stably and can guide users to conduct reasonable virtual rehabilitation training to help patients improve rehabilitation effect.