Method and system for guiding servo device to movable target

Application Number  00129089 Application Date  2000.09.29
Publication Number  1289936 Publication Date  2001.04.04
Priority Information   1999/9/29 US 09/407,795  
Applicant(s) Name  VI and T Group Corp.  
Inventor(s) Name  Zhang Ruiming;Mu Zhangli  
Patent Agency Code  11038 Patent Agent  yang guoxu
AbstractAn automated object following system (10) includes a tracker (12) associated with a following device (34), and a guider (14) associated with a n object to be followed. The tracker includes a first processor (15), and at least two transducers (16a, 16b) for generating an encoded ultrasonic signal. Each transducer has a control input communicating with the first processor for emitting an encoded ultrasonic signal generally toward the guider in response to a command signal from the first processor. The encoded ultrasonic signals carry signal source identification information. A radio frequency (RF) receiver (18) communicates with the firs t processor for receiving from the guider an encoded RF signal carrying distan ce and direction information of the guider relative to the tracker to be used for steering the following device toward the object to be followed.