Training Simulator Using Virtual Reality For Postural Balance Rehabilitation.
- Author:
Jong Min LEE
1
;
Kwang Suk PARK
;
Nam Kyun KIM
Author Information
1. Interdisciplinary Program in Medical and Biological Engineering Major, Seoul National University, Korea.
- Publication Type:Original Article
- Keywords:
Postural Balance Rehabilitation;
Virtual Reality;
Training Simulator;
HMD
- MeSH:
Acceleration;
Exercise;
Humans;
Postural Balance*;
Rehabilitation*;
Walking
- From:Journal of Korean Society of Medical Informatics
1998;4(1):123-127
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
There is a need of training and rehabilitation system for the patients who have problems in postural balance control due to diseases, accidents or age. We have implemented the training simulator which can apply virtual exercise for the training of patients. The system is composed of exercise recording, graphic simulator and training unit. We loaded two CCD cameras and three gyro-sensors on the exercise recording platform. Two CCD cameras are separated by 6.5cm to simulate human eyes and record slightly different images for each eye. Three gyro-sensors record acceleration in X, Y, Z axes respectively. These signals are sampled with 0.1 sec time intervals(10Hz) and converted to digital format. To integrate two video signals into one, only odd fields from left camera and even fields from right camera are multiplexed to compose a recording video signal. Digitized acceleration signals are recorded in blanking timing interval of NTSC signal format. Simulated bed positions are displayed on the monitor in graphic format. Training unit consisted of HMD and titling bed. Each recorded image is displayed on HMD while the tilting bed is controlled by the recovered accelerated signals. We have recorded the exercises while walking and driving. These recorded exercises are simulated with HMD and graphic display of position.
