Block-signal Systems Patents (Class 246/20)
  • Patent number: 11002167
    Abstract: A wireless power transfer system for a train that includes one or more locomotive units with an energy storage system and one or more passenger cars units that transmit power to the one or more locomotive units. The wireless power transfer system includes one or more HEP cables through which power is provided from the one or more passenger car units to the one or more locomotive units, one or more wireless power transfer (WPT) transmitters mounted to the rail separate from the train, a WPT receiver on one of the one or more passenger cars configured to receive power from one of the one or more WPT transmitters, and an inverter on the one of the one or more passenger car units connected to the HEP cables. The inverter receives power from the WPT receiver and sends the power to the energy storage system through the HEP cables.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: May 11, 2021
    Assignee: Clean Train Propulsion
    Inventor: David Cook
  • Patent number: 8998147
    Abstract: A train control system with pulse code-modulated cab signaling, especially for defining traveling speeds, includes a code generator acting upon a signal generator in dependence on a direction of travel. An output signal of the signal generator is supplied to a current track circuit covering a track section. In order to economize on components, the signal generator includes a transmitting device for modulating the input signals of both code generators. The transmitting device is connected to circuit connection adaptation devices on one of two entry ends of the track section through travel direction-specific outputs.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: April 7, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Peer Bohlmann, Gerald Lude
  • Patent number: 8613410
    Abstract: A device detects an occupied state or a free state of a track section and has a transmitter for feeding a transmission signal in the form of an alternating voltage into the running rails of the track section and at least one receiver for receiving a reception signal which is brought about by a transmission of the transmission signal via the running rails of the track section. In order to be able to detect faults in the device, in particular cable faults, particularly reliably and at the same time cost-effectively, the device accordingly is configured to determine a phase shift between the transmission signal and the reception signal. A method for operating such a device is further disclosed.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: December 24, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventors: Peer Bohlmann, Gerald Lude, Bernd Raschke
  • Patent number: 8452466
    Abstract: A method for detecting railway vacancy is provided. The method includes sensing, at a remote sensing unit positioned proximate to a railway, a presence of a railcar traversing the railway. The method also includes storing, in real-time, at the remote sensing unit, a sensing event indicative of the sensed presence of the railcar traversing the railway and transmitting, asynchronously from the time at which the presence of the railcar was sensed at the remote sensing unit, the stored sensing event to a master accumulation unit.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: May 28, 2013
    Assignee: General Electric Company
    Inventors: James Kiss, John McElroy, Charles Terra
  • Patent number: 8380361
    Abstract: A remote control system for controlling movement of a train comprises one or more sensors positioned relative to a railroad track for detecting the presence of a lead railcar on the track being pushed by a remotely controllable locomotive. The one or more sensors are spaced a distance from a predetermined stop location of a lead railcar and transmit signals when the lead railcar is detected on the track. A programmable controller positioned off-board or wayside receives signals from the one or more sensors and is in radio communication with an onboard operating system of the locomotive. The controller transmits a signal to the locomotive when the lead railcar is detected by a sensor, and in response to the signal the operating system of the locomotive sets a maximum speed setting for the locomotive to travel on the track toward the stop location.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: February 19, 2013
    Assignee: General Electric Company
    Inventor: Jay Evans
  • Patent number: 7756613
    Abstract: Trains and points are patrolled by a telegram containing the block occupancy information as a section that only one train is permitted to occupy, the information for giving lock position instructions to a point, and the point position information. This telegram is updated in order to get the right of block occupancy that is not held by other trains, and to give lock position instruction to the point. The train checks the block which this train is allowed to occupy, confirms that the point in this block has been set to the lock position specified by this train. Reading the aforementioned telegram, the point checks the lock position instruction given to itself and controls its lock position. A signaling system characterized by reduced designing and manufacturing costs is provided.
    Type: Grant
    Filed: February 15, 2006
    Date of Patent: July 13, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Keiichi Katsuta, Yoichi Sugita, Dai Watanabe, Takashi Yamaguchi
  • Publication number: 20100025545
    Abstract: A method for determining whether a defined section of a transportation track is occupied is described. The method includes inducing an audio frequency (AF) signal at a first position on the transportation track and receiving the AF signal at a second position on the transportation track. The defined section of the transportation track is located between the first position and the second position on the transportation track. The method further includes measuring a strength of the AF signal received as a function of time at the second position, and identifying an inflection point of the recorded AF signal strength. The inflection point indicates at least one of a rail vehicle entering the defined section of the transportation track and the rail vehicle exiting the defined section of the transportation track. The method further includes determining an occupancy of the defined section of the transportation track, based on the inflection point.
    Type: Application
    Filed: July 31, 2008
    Publication date: February 4, 2010
    Inventor: Jeffrey Koval
  • Patent number: 7542831
    Abstract: A geographic information system (GIS) displays geographic roadway data, geographic track data and geographic train position data. The GIS includes a GIS database having static roadway and track data. A computer aided dispatching (CAD) system includes a task to determine an occupied track section. A web server includes a first routine determining geographic starting and ending positions of the track section, a second routine displaying geographic information regarding the static roadway and track data, and a third routine determining geographic information regarding the occupied track section from the geographic starting and ending positions of the track section and from the GIS database. A client system communicates with the web server to receive and display the geographic information regarding the static roadway and track data, and to receive and display the geographic information regarding the occupied track section with the geographic information regarding the static roadway and track data.
    Type: Grant
    Filed: March 4, 2008
    Date of Patent: June 2, 2009
    Assignee: Ansaldo STS USA, Inc.
    Inventors: W. Brian Christie, James Rudakewiz
  • Patent number: 7395140
    Abstract: A geographic information system (GIS) displays geographic roadway data, geographic track data and geographic train position data. The GIS includes a GIS database having static roadway and track data. A computer aided dispatching (CAD) system includes a task to determine an occupied track section. A web server includes a first routine determining geographic starting and ending positions of the track section, a second routine displaying geographic information regarding the static roadway and track data, and a third routine determining geographic information regarding the occupied track section from the geographic starting and ending positions of the track section and from the GIS database. A client system communicates with the web server to receive and display the geographic information regarding the static roadway and track data, and to receive and display the geographic information regarding the occupied track section with the geographic information regarding the static roadway and track data.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: July 1, 2008
    Assignee: Union Switch & Signal, Inc.
    Inventors: W. Brian Christie, James Rudakewiz
  • Patent number: 7258309
    Abstract: A system for automatic and guided transport of people, the system including: at least one running track having guide members for guiding transport modules; an electric power supply system comprising a sequence of power supply blocks; electric self-propelled transport modules travelling individually along the running track and fitted with a collector for picking up electric power supplied by the power supply blocks; and an electric power supply distributor controlled by a central control unit managing the progress of the transport modules by powering or unpowering various power supply blocks.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: August 21, 2007
    Assignees: Alstom, Regie Autonome des Transports Parisiens
    Inventors: Jean Ehrsam, Jean-Paul Moskowitz, Anselme Cote
  • Patent number: 7099754
    Abstract: In order to propose a method of promptly judging movement of a train between block sections with a minimum number of transponders, an on-ground train control part for controlling operation of a train; an on-ground communication means capable of performing communication of information by coming within a specified range; and a sending-and-receiving part capable of sending the information received by the on-ground communication device to the on-ground train control part and receiving the information sent from the on-ground train control part, are provided, thereby, a position of presence of train is grasped by receiving a speed of the train using the on-ground communication means when the on-train communication means attached to the train comes near.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: August 29, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Yoichi Sugita, Dai Watanabe, Takatoshi Miyazaki, Kiyoshi Chiba
  • Patent number: 6845953
    Abstract: A train control system includes a control module that determines a position of a train using a positioning system and consults a database to determine when the train is approaching a portion of track monitored by a track circuit. When the train is near a track circuit, but while the train is still far enough away from the track circuit such that the train can be stopped before reaching the portion of track monitored by the track circuit, the train transmits an interrogation message to a transceiver associated with the track circuit. When the track circuit receives the interrogation message, a test is initiated. The test results are transmitted back to the train. The train takes corrective action if the track circuit fails to respond or indicates a problem.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: January 25, 2005
    Assignee: Quantum Engineering, Inc.
    Inventors: Mark Edward Kane, James Francis Shockley, Harrison Thomas Hickenlooper
  • Patent number: 6827315
    Abstract: The invention relates to a decision procedure in combinational logic which requires a computing time of n for determining the congestion of a railway track system. The railway track system supports n trains, each with a route length of m itineraries. Prior to setting a requested route segment for a given train, a query is performed to check train positions and whether the given train is allowed to travel on the track sectors to be used for the requested route segment, without causing a possibility that the track system may become congested. The processing steps can be reduced. a) verification of whether a train can reach the next immediate track sector of a route; b) verification for a two-train variation whether a reference position of the first train prevents the second train from traveling on its route; c) new dependencies are created using transitivity and for combinations of two trains, a verification is made whether a cogent sequence exists.
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: December 7, 2004
    Assignee: Siemens Schweiz AG
    Inventors: Werner Fierz, Cristina Bertelli
  • Publication number: 20040201486
    Abstract: A solid state crossing controller for a railroad crossing signal system with two independent outputs for controlling illumination of lamps in the signal system share a common neutral or return wire, with sensing of a common neutral or return line shared by the two independent outputs to determine any loss of the neutral line. When a failure has been detected in the neutral line, the controller modifies the voltages for the lamps in the signaling system for better illumination of the lamps during the failure condition, such as to the highest voltage available from a battery in the system. Upon detection of the failure in the neutral line, the controller may provide a call or message that there is a failure in the system that is in need of repair. If the failure in the neutral line is intermittent, the controller will resume normal operation after that train, has cleared the crossing. However, a call or message that a failure has occurred in the neutral line is provided.
    Type: Application
    Filed: April 10, 2003
    Publication date: October 14, 2004
    Inventors: Thomas Knowles, Rakesh Malhotra, Hung Pham, John Sharkey
  • Publication number: 20040182969
    Abstract: A train control system and method uses signal information from a next block to change a restrictive signal in a block currently occupied by the train to a less restrictive signal if it can be ascertained that the condition causing the more restrictive signal has changed. This may be accomplished by receiving signal information from the next block while still in the current block and, if the signal information from the next block is no more restrictive than the signal information in the current block, and the signal in the current block is of a type that can safely be modified, allowing the train to operate as if the signal information for the current block were less restrictive than the actual, previously received signal information for the current block.
    Type: Application
    Filed: March 21, 2003
    Publication date: September 23, 2004
    Inventors: Mark Edward Kane, James Francis Shockley, Harrison Thomas Hickenlooper
  • Patent number: 6766988
    Abstract: A system and method for detecting the presence or absence of cars, locomotives, or obstructions which may occupy a particular section of track of a model railroad. Digital Command Control signals are used to provide the excitation voltage needed to perform a measurement of the capacitance of an unoccupied section of track. Deviations from this unoccupied capacitance are then measured to indicate occupancy.
    Type: Grant
    Filed: February 15, 2003
    Date of Patent: July 27, 2004
    Inventor: Edward A. Richley
  • Patent number: 6195023
    Abstract: A communication based vehicle positioning reference system that includes a vehicle path. The vehicle path is divided into regions, wherein the regions contain a portion of the vehicle path. Each portion of the vehicle path contained within a respective region is defined by one or more segments. A position of a vehicle on the vehicle path is identified by a local coordinate system Sxyz, where S is a vehicle identifier, x is a specific region, y is a specific segment contained within the region and z is the position of the vehicle within the specific segment. The vehicle path can be represented on a map. Each of the segments can be identified by a character string that includes the indicia relating to the region the segment is located and a segment name. A plurality of computers can be provided which include only a portion of the map. Also, disclosed is a method for identifying the position of a vehicle along a vehicle path.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: February 27, 2001
    Assignee: DaimlerChrysler AG
    Inventors: Robert E. Walsh, Joseph A. Greco, II
  • Patent number: 4932615
    Abstract: A railroad track segment simulator for assessing track signal susceptibility to electric power line interference including a circuit including a series dc resistor, a series inductor, and an inductive network representing characteristic impedance of an electrical R-L transmission line, resistor, inductor, and network being serially connected as a series circuit, a first ballast resistance connected between one end of series circuit and a ground potential, and a second ballast resistance connected between another end of series circuit and a ground potential. The impedance of the segment is expressed as: ##EQU1## where: f=frequency (hz),r.sub.o =effective radius of rail at power line ac frequencies=0.09 m for 132 lb/yd rail,R.sub.dc =dc resistance per kft of track,j=imaginary number,Ln=impedance per track segment.A plurality of segments can be serially connected to simulate any length of line.
    Type: Grant
    Filed: October 12, 1988
    Date of Patent: June 12, 1990
    Assignee: Electric Power Research Institute
    Inventors: Marvin J. Frazier, Donald R. Little
  • Patent number: 4858859
    Abstract: An improved control system is described for controlling the passage of a vehicle between certain control points, the control is achieved by passing electronic tokens, which permit movement of the vehicle past a control point, between a signal box and the vehicle via a first data communications channel which is security interlocked by solid state interlocking in the data channel. A communications processor is included in the interlocking and forms part of the vital safety system of the interlocking. The improvement comprises the provision of a second data communications channel between the signal box and train, this second channel interfacing with the solid state interlocking. At the signal box a keyboard may be provided for feeding data to the interlocking and the second communications channel may communicate with the vital part of the solid state interlocking via a similar route to the keyboard.
    Type: Grant
    Filed: November 2, 1987
    Date of Patent: August 22, 1989
    Assignee: British Railways Board
    Inventor: Joseph Apperson