COMMUNICATION SYSTEM OF CONVEYANCE DEVICE

PROBLEM TO BE SOLVED: To provide a communication system of a conveyance device with improved reliability capable of preventing the mutual interference between a plurality of transmitters and a plurality of receivers even when a plurality of conveyance carriages are located in the straight-line section. SOLUTION: A ground-based transmitter 12 and a ground-based receiver 14 are installed on the ground in such a manner that they face each other in the extension direction of the straight-line section of a track 20, and are connected to a computer 10 on the ground. An on-vehicle receiver 4 receives a communication signal from the ground-based transmitter 12, and is installed on the conveyer carriages 3. An on-vehicle transmitter 5 transmits a communication signal to the ground-based receiver 14, and is installed on the conveyer carriages 3. The on-vehicle receiver 4 receives the communication signal transmitted from the ground-based transmitter 12 or from the on-vehicle transmitter 5, and the on-vehicle transmitter 5 transmits a communication signal to the ground-based receiver 14 or to the on-vehicle receiver 4. COPYRIGHT: (C)2008,JPO&INPIT