| 摘要 |
PURPOSE:To attain mutual communication between each unattended car and a control room through one communication channel by assigning in advance a transmission/reception operating time in the range of the period of a timing signal respectively. CONSTITUTION:A ground computer 1 outputs a timing signal SG1 of a prescribed period T as shown in (a) to an oscillator 2 and makes mutual communication with plural unattended cars 6a, 6b on a running track 5 via a ground communication device 3 and an antenna 4 in a predetermined timing. On the other hand, the oscillator 2 forms a modulation signal f3 with an inductive signal f1, a base signal f2 and a signal SG1, forms a signal f4 by superimposing the signal f3 onto the inductive signal f1 and transmits the signal to a track conductor line 8 via an amplifier 7. Thus, the computer 1 and the unattended cars 6a, 6b make mutual communication in the assigned timing and the cars are run safely and surely to a prescribed position by using the track conductor line 8. |
