| 摘要 |
The procedure and the invented device use the collection, the comparison, the measurement and the assessment of the phase difference between an ultrasonic signal emitted by an emitter and a similar reference signal present in a receiver to detect and quantify with precision every displacement made by an ultrasound emitter. The emitter and the receiver are synchronized by a signal transmitted by wire, radio or something else. By using three or more microphones, it is possible to determine the movement in three dimensions x, y, z of the ultrasound emitter that, for example, could be incorporated into a computer mouse, which can also be used for three- dimensional drawings or in a remote controler for a game console. Instead of using ultrasounds emitted by one emitter it is also possible to compare only the ultrasounds reflected by a passive mobile object.
|
