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1. 发明申请

US20110228882A1 DECODING ALGORITHM FOR FREQUENCY SHIFT KEY COMMUNICATIONS 有权
标题翻译：解码关键通信的频移算法
公开(公告)号：US20110228882A1
公开(公告)日：2011-09-22
申请号：US12724800
申请日：2010-03-16
申请人： BRIAN JOSEPH HOGAN
发明人： BRIAN JOSEPH HOGAN
IPC分类号： H04L27/14
CPC分类号： H04L27/1563 , B61L1/188 , B61L3/243 , H04L27/156
摘要： A method and apparatus for decoding binary frequency shift key signals in which an exclusive-OR of the sign of a real waveform with a sign of the imaginary waveform at a time shortly after the real (or, alternatively, the imaginary) waveform crosses zero is used to determine a bit represented by the signal. In some embodiments, particularly those in which the bit period is about one-half of the carrier signal frequency, both the real and imaginary waveforms are monitored to detect the zero crossing in order to account for the situation in which data transitions prevent zero-crossings on one of the waveforms.
摘要翻译：二进制频移键控信号的解码方法和装置，其中实际波形的符号与真实波形（或虚拟波形）之后不久的虚数波形的符号异或，用于确定由信号表示的位。在一些实施例中，特别是其中位周期大约是载波信号频率的一半的实施例中，监视实波和虚波两者以检测零交叉，以便考虑数据转换防止过零的情况在其中一个波形。

2. 发明授权

US4555791A Method and apparatus for determination of the state of an all-or-none modulated alternating signal in a perturbed environment 失效
标题翻译：用于确定扰动环境中全或非调制交替信号的状态的方法和装置
公开(公告)号：US4555791A
公开(公告)日：1985-11-26
申请号：US377803
申请日：1982-05-13
申请人： Jean-Francois Gabillet
发明人： Jean-Francois Gabillet
IPC分类号： B61L3/24 , H04L27/06
CPC分类号： B61L3/243
摘要： The state of an all-or-none modulated useful signal subjected to a perturbed environment is determined, on reception, through the use of non-modulated reference signals subjected to the same environment. The reference signals have respective frequencies neighboring that of the useful signal and the same initial amplitude so that all of the signals are attenuated in the same manner by environmental perturbations. By comparing against a threshold reference value the differences between the respective amplitudes of the received reference signals and the amplitude of the received useful signal, the "all" and "none" states of the useful signal are accurately determined irrespective of the effect of perturbed environment on the amplitude of the useful signal.
摘要翻译：在接收时，通过使用经受相同环境的非调制参考信号来确定经受扰动环境的全或无调制有用信号的状态。参考信号具有与有用信号和相同初始幅度相邻的频率，使得所有信号以相同的方式被环境扰动衰减。通过与阈值参考值进行比较，可以准确地确定接收到的参考信号的各个振幅与接收到的有用信号的幅度之间的差异，而不管扰动环境的影响如何，有效信号的“全”和“无”状态被准确地确定对有用信号的幅度。

3. 发明授权

US09102341B2 Method for detecting the extent of clear, intact track near a railway vehicle 有权
标题翻译：用于检测铁路车辆附近清晰，完整轨迹的方法
公开(公告)号：US09102341B2
公开(公告)日：2015-08-11
申请号：US13916943
申请日：2013-06-13
申请人： Transportation Technology Center, Inc.
发明人： Jerome J. Malone, Jr. , Alan L. Polivka
IPC分类号： B61L23/04 , B61L27/00 , B61L1/18 , B61L3/24 , B61L15/00 , B61L21/10 , B61L23/16
CPC分类号： B61L23/044 , B61L1/187 , B61L3/243 , B61L15/0027 , B61L21/10 , B61L23/166 , B61L27/00 , B61L27/0038 , B61L2027/005
摘要： A method is provided for detecting broken rail, track continuity, and track occupancy ahead of or behind a railroad vehicle traveling in fixed-block territory equipped with an AC track code wayside signal system or cab signal overlay system, and a communications link. This method, when used as an integral part of a communications-based train control (CBTC) or positive train control (PTC) system, allows immediate, automatic detection of broken rail, track occupancies, or open turnouts ahead of or behind a train in an occupied block. It also facilitates true moving-block or virtual block CBTC or PTC, thereby enabling higher efficiency and track utilization.
摘要翻译：提供一种用于检测在配备有AC轨道码路边信号系统或驾驶室信号覆盖系统的固定区域内的铁路车辆之前或之后的断轨，轨道连续性和轨道占用的方法以及通信链路。这种方法在作为基于通信的列车控制（CBTC）或阳性列车控制（PTC）系统的组成部分使用时，可以立即自动检测火车前后的轨道，轨道占用或开路，一个被占领的街区。它还有助于真正的移动块或虚拟块CBTC或PTC，从而实现更高的效率和跟踪利用率。

4. 发明申请

US20080272245A1 METHODS AND SYSTEMS FOR MULTI-TUNED CAB SIGNAL PICKUP COILS 审中-公开
标题翻译：多重CAB信号拾取线圈的方法和系统
公开(公告)号：US20080272245A1
公开(公告)日：2008-11-06
申请号：US11743317
申请日：2007-05-02
申请人： Samuel Robert Mollet , Michael Scott Mitchell
发明人： Samuel Robert Mollet , Michael Scott Mitchell
IPC分类号： B61L3/00
CPC分类号： B61L3/243
摘要： Methods and systems for a cab signal pickup coil assembly are provided. The system includes an assembly including at least one elongate magnetic core and a plurality of pickup coils concentrically spaced about the magnetic core wherein the pickup coils are configured to be responsive to a magnetic field in the magnetic core. The pickup coils are grouped in sets of pickup coils along an axial length of the magnetic core. At least two sets of pickup coils are at least partially tuned using respective tuning capacitors to be responsive to different respective cab signal carrier frequencies.
摘要翻译：提供了一种用于驾驶室信号拾取线圈组件的方法和系统。该系统包括组件，其包括至少一个细长磁芯和围绕磁芯同心间隔的多个拾取线圈，其中拾取线圈被配置为响应于磁芯中的磁场。拾取线圈沿着磁芯的轴向长度被分组成拾取线圈组。使用相应的调谐电容器至少部分地调谐至少两组拾音线圈，以响应不同的相应的驾驶室信号载波频率。

5. 发明授权

US3973746A Collision avoidance system 失效
标题翻译：碰撞避免系统
公开(公告)号：US3973746A
公开(公告)日：1976-08-10
申请号：US573847
申请日：1975-05-02
申请人： Kenneth H. Ball
发明人： Kenneth H. Ball
IPC分类号： B61L3/24 , B61L3/10 , B61L3/20
CPC分类号： B61L3/243
摘要： A collision avoidance system adapted for railroad use comprising a track having connected thereto a plurality of first signal transmitters exciting the track by a first control signal within a first frequency bandpass range and a plurality of second signal transmitters interspaced between the first signal transmitters in an alternating arrangement, such second transmitters exciting the track by a second control signal within a second frequency bandpass range. While the first and second control signals are respectively within the first and second bandpass range, individual ones thereof are separated by frequency increments from the other control signals within the corresponding bandpass range such that any beats therebetween are of a relatively high frequency. A train riding the track includes a front and rear pickup selectively connected to a dual frequency amplifier across a two-position switch where the amplifier, at its output, connects to a first and second bandpass filter respectively centered at the first and second frequency bandpass. The outputs of the respective filters are rectified and fed to corresponding comparators wherein the signals are compared against a preselected level. The outputs of the comparators are then combined in a logical AND circuit which, across a delay network having a long time constant in the direction of brake engagement and a short time constant in the direction of brake disengagement, operates the brakes of the train. Included also in the train, intermediate the front and rear pickups, is a shunt circuit including the motor of the train, whereby the control signals are attenuated. Thus, the next succeeding train will not receive the shunted control signals and will therefore engage the brakes.
摘要翻译：适用于铁路使用的防撞系统包括：轨道，其连接有多个第一信号发射器，所述多个第一信号发射器通过第一频带范围内的第一控制信号激励所述轨道;以及多个第二信号发射机，交替地间隔在所述第一信号发射机之间，这样的第二发射机通过第二频带范围内的第二控制信号来激励轨道。当第一和第二控制信号分别在第一和第二带通范围内时，其各自的频率增量与相应带通范围内的其它控制信号分开，使得它们之间的任何节拍具有较高的频率。乘坐轨道的火车包括选择性地连接到两位置开关的双频放大器的前和后拾音器，其中放大器在其输出处连接到分别以第一和第二频带为中心的第一和第二带通滤波器。各滤波器的输出被整流并馈送到相应的比较器，其中将信号与预选电平进行比较。然后将比较器的输出组合在逻辑“与”电路中，通过在制动器接合方向上具有长时间常数的延迟网络和制动器分离方向上的短时间常数来操作列车的制动器。包括在列车中，在前后拾音器之间，是包括列车的电动机的分流电路，由此控制信号被衰减。因此，下一个后续的列车将不会接收分流的控制信号，因此将接合制动器。

6. 发明申请

US20190193762A1 SYSTEM AND METHOD FOR DETECTING A BREAK IN A RAILWAY TRACK 审中-公开
公开(公告)号：US20190193762A1
公开(公告)日：2019-06-27
申请号：US16212350
申请日：2018-12-06
申请人： Rumo Logística Operadora Multimodal S.A. , Ricci Eletrônica Ltda
发明人： Márcio do Nascimento Machado , Eder Linconl Batistela Ricci
IPC分类号： B61L23/04 , B61L1/18 , B61L3/24 , B61L15/00 , B61L21/10 , B61L23/16
CPC分类号： B61L23/044 , B61L1/187 , B61L3/243 , B61L15/0027 , B61L21/10 , B61L23/166 , B61L2205/04 , G01N2291/2623
摘要： The present invention refers to a method for detecting a break in a railway track, system for detecting a break in a railway track (1) and device for detecting a break in a railway track (500), in which a first track (101) and a second track (102) are connected defining measuring sections (302, 303) and electrical detection networks (M1, M2), in which a device for detecting a break in a railway track (500) is coupled to said tracks (101, 102) and arranged to measure at least one electrical parameter of at least one electrical detection network (M1, M2) and selectively promote an output (502) that indicates a state of at least one track (101, 102).

7. 发明授权

US08387925B2 Track circuit 有权
标题翻译：轨道电路
公开(公告)号：US08387925B2
公开(公告)日：2013-03-05
申请号：US12968681
申请日：2010-12-15
申请人： Pier Alessandro Aisa , Andrea Giovannucci
发明人： Pier Alessandro Aisa , Andrea Giovannucci
IPC分类号： B61L25/02
CPC分类号： B61L1/187 , B61L1/188 , B61L3/243 , B61L3/246
摘要： A track circuit for railway systems or the like includes a track segment of predetermined length electrically insulated from an adjacent track segment by an electric joint, which includes a conductor and forms two loops arranged in a longitudinal S-shape within the space between the rails. Units are provided that transmit and receive electric signals and that are operatively coupled with the electric joints. The transmitting/receiving units include a unit transmitting and receiving a high-frequency signal to detect a train on the a track segment, and a unit transmitting and receiving a low-frequency signal which provides the carrier encoded with information to be transmitted to a train-based receiving unit. Units are further provided that enable/disable the high-frequency signal transmitting/receiving units, and units that enable/disable the low-frequency signal transmitting/receiving units, which are alternately actuated. The electric joint includes an internal impedance disposed between the two loops.
摘要翻译：用于铁路系统等的轨道电路包括通过电接头与相邻轨道段电绝缘的预定长度的轨道段，其包括导体并形成在轨道之间的空间内以纵向S形布置的两个环。提供了发送和接收电信号并且与电接头可操作耦合的单元。发送/接收单元包括发送和接收高频信号以检测轨道段上的列车的单元，以及发送和接收低频信号的单元，所述低频信号向编码的信息编码将被发送到列车的接收单元。进一步提供启用/禁用高频信号发送/接收单元的单元，以及启用/禁用交替致动的低频信号发送/接收单元的单元。电接头包括设置在两个环之间的内部阻抗。

8. 发明授权

US4467430A Railway track circuit 失效
标题翻译：铁路轨道电路
公开(公告)号：US4467430A
公开(公告)日：1984-08-21
申请号：US302101
申请日：1981-09-15
申请人： Andre Even , Christian Fortier , Michel G. Guillard , Dominique Hedoin , Serge Le Guen , Dominique Raucourt
发明人： Andre Even , Christian Fortier , Michel G. Guillard , Dominique Hedoin , Serge Le Guen , Dominique Raucourt
IPC分类号： B61L1/18 , B61L1/14 , B61L3/08 , B61L3/24 , B61L23/16 , B61L3/20 , B61L11/02 , B61L21/06
CPC分类号： B61L1/14 , B61L23/166 , B61L3/243
摘要： A railway track comprising a pair of rails is divided into a succession of segments, each segment having a railway track circuit for separating successive trains. The track circuit is switchable between an initial state and a complementary state and comprises a downstream impedance electrically connecting the rails at a downstream point, an upstream impedance electrically connecting the rails at an upstream point, an electromagnetic sensor located between the upstream and downstream impedances in the vicinity of one of the rails, a transmitting member, and a pair of receiving members. One receiving member is in electromagnetic communication with the electromagnetic sensor. The transmitting member and the other receiving member are switchable between connection to the downstream impedance and the upstream impedance.
摘要翻译：包括一对轨道的铁路轨道被分成若干段，每个段具有用于分离连续列车的铁路轨道电路。轨道电路可在初始状态和互补状态之间切换，并且包括在下游点电连接轨道的下游阻抗，电连接上游点处的轨道的上游阻抗，位于上游和下游阻抗之间的电磁传感器轨道之一的附近，发送构件和一对接收构件。一个接收构件与电磁传感器电磁通信。发送构件和另一个接收构件可在连接到下游阻抗和上游阻抗之间切换。

9. 发明申请

US20130334373A1 METHOD FOR DETECTING THE EXTENT OF CLEAR, INTACT TRACK NEAR A RAILWAY VEHICLE 有权
标题翻译：用于检测铁路车辆附近的直线，直线轨迹的方法
公开(公告)号：US20130334373A1
公开(公告)日：2013-12-19
申请号：US13916943
申请日：2013-06-13
申请人： Transportation Technology Center, Inc.
发明人： Jerome J. Malone, JR. , Alan L. Polivka
IPC分类号： B61L23/04 , B61L27/00
CPC分类号： B61L23/044 , B61L1/187 , B61L3/243 , B61L15/0027 , B61L21/10 , B61L23/166 , B61L27/00 , B61L27/0038 , B61L2027/005
摘要： A method is provided for detecting broken rail, track continuity, and track occupancy ahead of or behind a railroad vehicle traveling in fixed-block territory equipped with an AC track code wayside signal system or cab signal overlay system, and a communications link. This method, when used as an integral part of a communications-based train control (CBTC) or positive train control (PTC) system, allows immediate, automatic detection of broken rail, track occupancies, or open turnouts ahead of or behind a train in an occupied block. It also facilitates true moving-block or virtual block CBTC or PTC, thereby enabling higher efficiency and track utilization.
摘要翻译：提供一种用于检测在配备有AC轨道码路边信号系统或驾驶室信号覆盖系统的固定区域内的铁路车辆之前或之后的断轨，轨道连续性和轨道占用的方法以及通信链路。这种方法在作为基于通信的列车控制（CBTC）或阳性列车控制（PTC）系统的组成部分使用时，可以立即自动检测火车前后的轨道，轨道占用或开路，一个被占领的街区。它还有助于真正的移动块或虚拟块CBTC或PTC，从而实现更高的效率和跟踪利用率。

10. 发明申请

US20130284859A1 SYSTEM AND METHOD FOR DETECTING BROKEN RAIL AND OCCUPIED TRACK FROM A RAILWAY VEHICLE 有权
标题翻译：用于检测铁路车辆的铁路和占用轨道的系统和方法
公开(公告)号：US20130284859A1
公开(公告)日：2013-10-31
申请号：US13869227
申请日：2013-04-24
申请人： TRANSPORTATION TECHNOLOGY CENTER, INC.
发明人： Alan Lee Polivka , Jerome J. Malone, Jr. , Brian Eric Smith , Steven Mark Renfrow
IPC分类号： B61L27/00
CPC分类号： B61L27/0055 , B61L1/188 , B61L3/243 , B61L21/10 , B61L23/044 , B61L25/021 , B61L25/023 , B61L25/026 , B61L2205/04
摘要： A method is provided for detecting broken rail, unintentionally misaligned turnouts, and track occupancy ahead of or behind a railway vehicle traveling on a railroad track. Shunts extend between the rails at intervals along the railroad track. Each shunt has electrical signal transmission characteristics differing from those of adjacent shunts. A test unit on the railway vehicle induces a test signal in a first rail to create a track circuit in which the test signal propagates along the first rail, through at least one of the shunts, returns to the railway vehicle along the second rail, and through the wheels and axle of the railway vehicle. The test signal has electrical properties selected to interact with at least one of the shunts. The received test signal on the second rail is analyzed to identify predetermined conditions concerning the status of the railroad track.
摘要翻译：提供了一种用于检测在铁路轨道上行驶的铁路车辆之前或之后的断轨，无意错位的道岔和轨道占用的方法。分流器沿轨道沿轨道间隔延伸。每个分流器具有与相邻分流器不同的电信号传输特性。轨道车辆上的测试单元在第一轨道中产生测试信号以产生轨道电路，其中测试信号沿着第一轨道通过至少一个分路传播，沿着第二轨道返回到铁路车辆，以及通过铁路车辆的车轮和车轴。测试信号具有选择的电气特性以与至少一个分流器相互作用。分析在第二轨道上接收到的测试信号以识别关于铁轨的状态的预定条件。

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