公开(公告)号：US3638014A

公开(公告)日：1972-01-25

申请号：US3638014D

申请日：1969-09-22

Applicant: SAAB AB

Inventor： WALLGARD GUNNAR ALEXIUS

IPC: B61L23/30 ,  B61L13/04 ,  B61L13/00

CPC classification number: B61L13/047

Abstract: The condition of a signal for each block of vehicle track corresponds to that of a bistable memory unit placed in one condition by momentary output of an arrival detector and in its other condition by momentary output of a departure detector. All detectors are actuated by a single type of vehicle-carried exciter. An arrival detector is located near each end of each block. A departure detector is spaced along the track from each arrival detector, in the direction away from the other arrival detector.

Abstract translation: 车辆轨道的每个块的信号的条件对应于通过到达检测器的瞬时输出置于一个状态的双稳态存储器单元的条件，并且在其它条件下通过离场检测器的瞬时输出。 所有检测器都由单一类型的车载激励器启动。 到达检测器位于每个块的每一端附近。 离开检测器沿着远离另一到达检测器的方向沿着轨道从每个到达检测器间隔开。