| 摘要 |
<p>A sortation system comprises a plurality of transport units (32, 33) connected end to end to form a continuous train and mounted for movement along a track defining at intervals alongs its length destination ports at which items carried by the transport units may be discharged under the control of a central control system (41). The central control system (41) comprises a radio frequency transmitter device (39) through which control signals to the continuous train (32, 33) are transmitted and the continuous train (32, 33) comprises a radio frequency receiver device (39) for receiving the transmitted control signals. The radio frequency transmitter device (39) is connected to a leaky feed aerial (38) which extends the length of the track.</p> |
