| 摘要 |
<p>An automatic motorized golf trolley having control means is arranged to maintain a fixed separation distance between the trolley and the golfer. The trolley is provided with an ultrasonic transmitter 26 and a directional receiver 27, the transmitter being arranged to transmit an identification code which is received by a remote unit attached to the golfer. The remote control unit comprises an ultrasonic receiver which receives transmitted signals, comparison means for comparing a received signal against a stored code, and means for transmitting, via a transmitter mounted on the remote control unit, a carrier control signal for reception by the receiver of the trolley. The control means is arranged to analyze the time separation between transmission of the identification code and reception of the control signal, and the direction from which the control signal was received, and to drive the trolley accordingly. The remote control unit comprises means for delaying the transmission of a control signal in order to eliminate the effect of reflections at the carrier receiver. A clutch and brake mechanism for the trolley comprises an electric motor which drives a worm gear to axially move the clutch. The brake engages at the extreme end of its travel. <IMAGE></p> |
