| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a collision preventing device for carrier with which passing is enabled and the operation efficiency can be remarkably improved by transmitting a bidirectional signal while managing the transmission time. SOLUTION: Concerning the collision preventing device for carrier, since an ON counter 10 for detecting a temporary stop signal, which is outputted by another carrier, showing the temporary stop of a carrier when a signal continued for a prescribed time is detected by the existence of the other carrier on the same guide lane and an LPF 9 for outputting a control signal showing the existence of the present carrier to the other carrier are provided on the carrier. Thus, the crossing, joining point or passing can be controlled only by the carrier and mutual collision can be prevented so that facilities on the ground concerning the operation of the carrier can be canceled.</p> |
