| 摘要 |
PURPOSE:To ensure an easy countermeasure to the change, etc. of a course of a traveling object by providing an ultrasonic oscillator at one side of an area near the traveling object and its course and an ultrasonic sensor at the other side of said area respectively and controlling the position of the traveling controller from the transmission time of the ultrasonic wave. CONSTITUTION:A traveling object 5 receives the ultrasonic wave radiation indicating signal from a central controller 10 through an antenna 6a and radiates the signal through an ultrasonic transmitter 7a. The ultrasonic sensors A and B set at the areas near the traveling course of the object 5 send the ultrasonic wave reception signals back to the controller 10. The controller 10 calculates the distances among sensors A and B and the object 5 from the time needed from the indication of radiation to the reception and then decides the position of the subject 5. Based on this detected position, the controller 10 transmits the control signal to guide the object 5 and controls a driver in the object 5. |
