Development and Evaluation of a Spatial Position Sensor Using Wire for Virtual Catch-Ball System

In the present paper, a spatial position sensor of new type for virtual catch ball system is proposed. In the virtual catch-ball system, it is necessary to obtain spatial positions of the ball and the glove. For such a spatial position sensor, requirements are not only low cost but also wide measurable area and low noise. Several spatial position sensors which have already been developed do not satisfy those requirements. The authors' newly designed spatial position sensor is of simple structure and attains the above goal. The static and the dynamic examinations were made on the characteristics of that sensor, and it was found that the sensor has desirable characteristics. The performance of the sensor is also discussed through the experimental results.