| 摘要 |
A signalling installation for ensuring the safety of a single-line track section divided into several blocks, the safety of which is ensured by signals. Sender units, in pairs, (2, 2', 3, 3') for detecting a railway vehicle are located at the limits of each block and are connected to the inputs of a flip-flop circuit (4, 4'), which they set and reset. One output (Q') of each flip-flop circuit (4, 4') is connected to the reset input with an AND gate of a further flip-flop circuit (6, 6') and at least one other input of the AND gate of the reset input of each of these flip-flop circuits (6, 6') is connected to at least one of the sender units (2, 2', 3, 3') arranged on the ouput side of blocks (B) for each direction of motion of the railway vehicle to be detected. The outputs (Q') of the flip-flop circuits (6, 6') control two emergency signals (1, 1') or emergency stopping devices in the block (B) region. |
