Railroad track circuit vital relay control
    1.
    发明授权
    Railroad track circuit vital relay control 失效
    轨道电路重要继电器控制

    公开(公告)号:US5737173A

    公开(公告)日:1998-04-07

    申请号:US655700

    申请日:1996-06-03

    IPC分类号: H03K19/007 H03K17/81

    CPC分类号: H03K19/007

    摘要: A railroad vital relay control circuit has a first input for receiving a reference alternating current signal of a selected frequency and a second input for receiving a track alternating current signal having the selected frequency of the reference signal and a predetermined phase and magnitude relationship therewith. A magnetic core provides a logical AND function and has two input arms and an intermediate output arm. There is a winding on each of the input arms and a winding on the output arm. There are frequency tuned voltage limiting circuit elements connecting the first input and a first one of the magnetic core input windings and the second input and the second input winding of the magnetic core. The magnetic core has an output winding on the intermediate arm which is connected to a vital relay. The input windings on the magnetic core are connected to produce flux in the same direction in the output arm. In phase signals of the selected frequency at the magnetic core input windings provide sufficient flux in the output arm to induce a signal in the output winding to hold the vital relay in an operated position.

    摘要翻译: 铁路重心继电器控制电路具有用于接收选定频率的参考交流信号的第一输入端和用于接收具有所选参考信号频率的轨道交流信号和与其预定的相位和幅度关系的第二输入端。 磁芯提供逻辑AND功能,并具有两个输入臂和一个中间输出臂。 每个输入臂上有一个绕组,在输出臂上有一个绕组。 存在连接第一输入和第一个磁芯输入绕组以及磁芯的第二输入和第二输入绕组的频率调谐电压限制电路元件。 磁芯在中间臂上具有连接到重要继电器的输出绕组。 磁芯上的输入绕组被连接以在输出臂中沿相同的方向产生磁通。 在磁芯输入绕组处的所选频率的同相信号在输出臂中提供足够的通量,以在输出绕组中感应信号以将重要继电器保持在操作位置。

    Temperature compensated, regulated power supply and battery charger for
railroad signal use
    2.
    发明授权
    Temperature compensated, regulated power supply and battery charger for railroad signal use 失效
    温度补偿,稳压电源和电池充电器用于铁路信号使用

    公开(公告)号:US5451857A

    公开(公告)日:1995-09-19

    申请号:US945236

    申请日:1992-09-15

    申请人: James E. Moe

    发明人: James E. Moe

    IPC分类号: H02J7/00 H02J7/10

    CPC分类号: H02J7/008 Y10S320/36

    摘要: A temperature compensated, regulated power supply and battery charger for supplying power to railroad warning lights and crossing gates utilizes a ferroresonant transformer having a primary winding, a secondary winding, and a resonant circuit in magnetic circuit therewith. Voltage regulation is accomplished at essentially no load conditions by the use of a temperature sensing element and a shunt regulator connected in circuit with the output terminals of the secondary winding. The shunt regulator varies the output voltage at the output terminals in response to temperature sensed by the temperature sensing element during essentially no load conditions.

    摘要翻译: 用于向铁路警示灯和交叉门供电的温度补偿调节电源和电池充电器利用具有初级绕组,次级绕组和与其磁路中的谐振电路的铁磁共振变压器。 通过使用与次级绕组的输出端子电路连接的温度感测元件和分流调节器,在基本上无负载条件下实现电压调节。 分流调节器响应于在基本无负载条件下由温度感测元件感测到的温度,来改变输出端子处的输出电压。

    Railroad crossing gate mechanism control system
    3.
    发明授权
    Railroad crossing gate mechanism control system 失效
    铁路交叉口机构控制系统

    公开(公告)号:US5834914A

    公开(公告)日:1998-11-10

    申请号:US924897

    申请日:1997-09-08

    IPC分类号: B61L29/02 B61L29/22 H02P7/06

    CPC分类号: B61L29/02 B61L29/22

    摘要: A railroad crossing gate electrical control system for moving a crossing gate in up and down directions and providing snubbing protection to gate movement in failure modes includes an electrical motor having two diametrically positioned permanent magnet poles and two series connected electromagnet poles. There is an armature which rotates inside of the poles. There is a motor and snub relay which has contacts connected to the armature and the series connected electromagnet poles. A terminal board has movable contacts which are connected to the motor and snub relay and to a relay coil for moving the contacts of the motor and snub relay. A source of power is connected to the terminal board, with the movable terminal board contacts controlling the application of power to the motor snub relay coil and the relay contacts for causing up and down movement and for providing snubbing of armature movement during up and down gate movement and gate failure modes. An overspeed control is connected across the armature for limiting armature speed.

    摘要翻译: 一种用于沿上下方向移动交叉门并为故障模式中的门运动提供缓冲保护的铁路交叉门电气控制系统包括具有两个直径定位的永磁体磁极和两个串联的电磁铁极的电动机。 有一个在两极之间旋转的电枢。 电机和缓冲继电器具有连接到电枢和串联的电磁铁极的触点。 端子板具有连接到电动机和缓冲继电器的可动触点和用于移动电动机和缓冲继电器的触点的继电器线圈。 电源连接到端子板,可移动端子板触点控制对电动机缓冲继电器线圈和继电器触点的施加,用于引起上下运动,并在上下门中提供电枢运动的缓冲 运动和门故障模式。 跨越电枢的超速控制被连接以限制电枢速度。

    Railroad crossing motion sensing system
    4.
    发明授权
    Railroad crossing motion sensing system 失效
    铁路交叉运动感应系统

    公开(公告)号:US3944173A

    公开(公告)日:1976-03-16

    申请号:US569302

    申请日:1975-04-17

    IPC分类号: B61L29/28 B61L21/06

    CPC分类号: B61L29/286

    摘要: An apparatus for detecting an approaching train within a track section utilizes a transmitter coupled to the rails at a feed point for applying a current to the track section. There is a receiver coupled to the track section for producing a signal representative of the impedance of the track section. There are devices for utilizing the received signal for detecting train motion, abnormally low impedance and abnormally high impedance of the track section. A normalizer circuit is connected to the receiver for increasing or decreasing the received signal gain within predetermined limits in accordance with variation in impedance of the track section.

    摘要翻译: 用于检测轨道部分内的接近列车的装置利用在馈电点处耦合到轨道的发射器,用于向轨道部分施加电流。 存在耦合到轨道部分的接收器,用于产生表示轨道部分的阻抗的信号。 存在用于利用接收信号来检测轨道部分的列车运动,异常低阻抗和异常高阻抗的装置。 归一化电路连接到接收器,用于根据轨道部分的阻抗的变化在预定限度内增加或减少接收信号增益。