| 摘要 |
PCT No. PCT/CH84/00022 Sec. 371 Date Oct. 23, 1984 Sec. 102(e) Date Oct. 23, 1984 PCT Filed Feb. 16, 1984 PCT Pub. No. WO84/03264 PCT Pub. Date Aug. 30, 1984.In order to transmit in a simple manner in a railway system informations from a ground station provided at the rail level to a railway vehicle, a plurality of transmitters (5) and receivers (4) are arranged one after the other in the longitudinal direction of the railway track and are used as coding elements (1,2,3) of a coding group and cooperate individually and one after the other with a code converter (9) upon the passage of a vehicle on the rails provided with a corresponding code converter (9)-like ground station. The isolated coding elements (1,2,3) comprised of transmitter (5) and receiver (4) form the parts of a resonant circuit which is synchronized with the frequency of the code converter (9) and which draws the whole energy required for its return from the transmission power of the code converter (9). |
