| 摘要 |
Method and apparatus for detecting synchronism error in a system which activates a readout signal for each vehicle in a train having a mixture of standard four-, six- and eight-axle cars and engines while coupled and in motion. Four axle detectors identified A, B, C and D are arranged in that order along the line of movement of the train. With the A and D detectors spaced 9 feet 4 inches to 11 feet apart, and the B and C detectors approximately evenly spaced between them, they will be actuated in a unique CDAB sequence once per standard, American four-, six- or eight-axle railway vehicle. A synchronism error signal will be activated unless one of four specific combinations of A and D axle detector actuations have occurred when the unique, CDAB sequence occurs.
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