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1. 发明授权

US4270715A Railway control signal interlocking systems 失效
标题翻译：铁路控制信号联锁系统
公开(公告)号：US4270715A
公开(公告)日：1981-06-02
申请号：US41628
申请日：1979-05-23
申请人： David J. Norton , Christopher R. Brown
发明人： David J. Norton , Christopher R. Brown
IPC分类号： B61L1/20 , B61L19/06 , G06F11/00 , B61L27/00
CPC分类号： G06F11/0796 , B61L1/20 , B61L19/06 , G06F11/184 , G06F11/181
摘要： The specification discloses an electronic or computer-based railway control signal interlocking system. Signals representing the settings or conditions of railway control elements e.g. track circuits, signals and points, and their control signals are checked as usual by the interlock equipment to establish route safety. However failures in the system may only be discovered when a change to a control element setting is attempted. Since long periods can elapse between changes a failure may lie dormant for some time. In order to reduce dormant wrong side failure periods to a minimum the signals supplied to the interlocking equipment are periodically switched to a predetermined state chosen to prove that when the interlocking equipment receives the switched signal that a wrong side failure mode does not exist in the switched signal path.
摘要翻译：本说明书公开了一种基于电子或计算机的铁路控制信号联锁系统。代表铁路控制元件的设置或条件的信号，例如跟踪电路，信号和点及其控制信号通常由互锁设备进行检查，以建立路由安全性。但是，当尝试对控制元件设置进行更改时，系统中的故障只能被发现。由于长时间可能在变化之间经过一段时间，故障可能会休眠。为了将休眠的错误侧故障周期减少到最小，提供给联锁设备的信号周期性地切换到预定状态，被选择以证明当联锁设备接收到切换信号时，切换中不存在错误的侧面故障模式信号路径。

2. 发明授权

US4284256A Sequential checking of railway control signals 失效
标题翻译：铁路控制信号的顺序检查
公开(公告)号：US4284256A
公开(公告)日：1981-08-18
申请号：US41595
申请日：1979-05-23
申请人： David J. Norton
发明人： David J. Norton
IPC分类号： B61L7/08 , B61L21/06 , B61L27/00
CPC分类号： B61L7/08 , B61L21/06
摘要： An electronic or computer-based railway control system including further safety checks in addition to normal safety interlocking. The present system carries out checks to see that operations, such as print switching and signal setting, are carried out in the correct sequence for a given route having regard to the position and movement of a train as indicated by track circuits. In a computer-based system appropriate checking routines may be written into the computer soft-ware.
摘要翻译：一种基于电子或计算机的铁路控制系统，除了正常的安全联锁之外，还包括进一步的安全检查。本系统进行检查，以查看如轨道电路所示的列车的位置和移动，针对给定的路线以正确的顺序执行诸如打印切换和信号设置的操作。在基于计算机的系统中，适当的检查例程可以写入计算机软件。

3. 发明授权

US4860977A Railway signalling system 失效
标题翻译：铁路信号系统
公开(公告)号：US4860977A
公开(公告)日：1989-08-29
申请号：US76108
申请日：1987-07-21
申请人： David J. Norton
发明人： David J. Norton
IPC分类号： B61L3/22 , B61L19/06 , B61L25/06
CPC分类号： B61L19/06 , B61L25/06 , B61L3/221
摘要： A railway signalling system includes a plurality of trackside equipments (11,12) and means (1,2,3,4,6, 15,16) for transmitting control information to the equipments and receiving status information therefrom, each of the trackside equipments being provided with a respective microprocessor (13 or 14) via which such control information is transmitted from the said means to the equipment and via which such status information is received by said means from the equipment.
摘要翻译：轨道信号系统包括多个轨道侧设备（11,12）和用于向设备发送控制信息并从其接收状态信息的装置（1,2,3,4,6,15,16），每个轨道设备设置有相应的微处理器（13或14），通过该微处理器将这些控制信息从所述装置发送到设备，并且通过所述装置从所述装置接收所述状态信息。

4. 发明授权

US4305556A Railway control signal dynamic output interlocking systems 失效
标题翻译：铁路控制信号动态输出联锁系统
公开(公告)号：US4305556A
公开(公告)日：1981-12-15
申请号：US41594
申请日：1979-05-23
申请人： David J. Norton , Christopher R. Brown
发明人： David J. Norton , Christopher R. Brown
IPC分类号： B61L1/20 , B61L19/06 , G06F11/00 , B61L27/00
CPC分类号： G06F11/0796 , B61L1/20 , B61L19/06 , G06F11/184 , G06F11/181
摘要： A computer based railway interlocking control system, having triple parallel redundant control computers (FIG. 2) provides greater system reliability as compared to a single computer system. The railway traffic control devices, e.g. points and signals, are arranged to be controlled by signals in one of two possible steady states, the interlocking control means (30, 31, 32, FIG. 2) is arranged to produce control signals in the steady state for de-energized or "safe" device settings and in an alternating state for energized or potentially "unsafe" settings. The alternating control signals (33, 34, 35 or 38) must be converted to the corresponding steady state to operate the devices thus, the converting or restoring circuit discriminates against dormant wrong side failures, i.e. "unsafe" signals to increase the inherent safety of the system.
摘要翻译：具有三并联冗余控制计算机（图2）的基于计算机的铁路联锁控制系统与单个计算机系统相比提供了更大的系统可靠性。铁路交通控制装置，例如点和信号被布置成由两个可能稳态之一的信号控制，联锁控制装置（30,31,32，图2）被布置成产生处于稳定状态的控制信号以断电或“ 安全“设备设置，并处于交替状态，用于通电或潜在的”不安全“设置。必须将交流控制信号（33,34,35或38）转换为相应的稳态以操作设备，因此，转换或恢复电路可以区别于休眠的错误侧故障，即“不安全”信号，以增加固有的安全性系统。

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