Ultrasonic Positioning in Three-Dimensional Space

In this paper, an improved measurement method of ultrasonic is researched in the field of the dynamic three-dimensional positioning system, which improves greatly the accuracy and performance of measurement system. Special high-frequency timer chip and automatic gain control module are adopted into the system to further improve the accuracy of received signals. Real-time measurement of the three-dimensional position by the above method is tested by the virtual computer mouse. The result shows that the method is more accurate and meets the requirement of human-computer interaction system.