| 摘要 |
<p>A positioning system for detecting the position of a cleansing device (10) is provided. The positioning system includes a cleansing device (10) and a base station (12). The cleansing device (10) includes a controlling unit (102), a cleaning module (104), a first emitting unit (106), and a second emitting unit (108). The controlling unit (102) controls cleansing operation performed on a cleansing region taken care by the cleaning module (104), controls the first emitting unit (106) to emit an initial signal (RS), and controls the second emitting unit (108) to emit an ultrasonic signal (UWS). The base station (12) includes a first receiving unit (122), two second receiving units (124,126), and a computing unit (120). The first receiving unit (122) receives the initial signal (RS). The second receiving units (124,126) receive the ultrasonic signal (UWS). The computing unit (120) computes the position of the cleansing device (10) according to the initial signal (RS) received and the point in time when the ultrasonic signal (UWS) is received.</p> |
