| 摘要 |
<p>A cable control apparatus having a carrier and one or more trigger points disposed on a cable. A control mechanism controls movement of the cable and has a plurality of sensors to sense the one or more trigger points, and a motor to impart movement to the cable. A first sensor stops the motor and reverses direction of the cable to bring the predator to a base location, a second sensor stops the motor when the carrier reaches the base location, and a third sensor restarts the motor.</p> |
