| Ansaldo STS USA, Inc. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120072088 | Method for Adjusting Braking Parameters of a Train to Account for Train Characteristic Parameter Variations - A method of adjusting one or more of braking parameters used in a braking function to control braking of a train includes determining an adjustment factor based on a joint stopping distance probability distribution, the joint stopping distance probability distribution representing the composite effect on stopping distance of a plurality of predetermined train characteristic parameters, each of the predetermined train characteristic parameters being variable, and applying the adjustment factor to each of the one or more of braking parameters. Also, a method of adjusting braking parameters that includes determining an adjustment factor based on a nominal value, a worst case limit value and a best case limit value of each of a plurality of predetermined train characteristic parameters, each of the predetermined train characteristic parameters being variable, and applying the adjustment factor to each of the one or more of braking parameters. | 03-22-2012 |
| 20110276285 | Apparatus and Method for Vital Signal State Detection in Overlay Rail Signal Monitoring - A railroad monitoring apparatus includes first and second diverse vital processing units, first and second current sensors configured to measure the current being provided to one or more signaling elements of an item of wayside signaling equipment, and means for measuring voltage levels being supplied to each of the signaling elements. The first processing unit receives a first current measurement from the first current sensor and the measured voltage levels, and the second vital processing unit receives a second current measurement from the second current sensor and the measured voltage levels. The vital processing units are each programmed to determine based on one or more of the first current measurement, the second current measurement and the measured voltage levels: (i) the state of the item of railroad wayside signaling equipment, (ii) failures within the item of railroad wayside signaling equipment, and (iii) failures within the monitoring apparatus itself. | 11-10-2011 |
| 20110249434 | LIGHT ASSEMBLY - A light assembly includes a lighting module having a number of LEDs and a reflector assembly disposed on the lighting module. The reflector assembly includes a number of individual reflector portions, each reflector portion being of generally concave shape and structured to selectively direct light emitted from a respective one of the number of LEDs. A lens member is disposed over the reflector assembly and a membrane is disposed between the reflector member and the lens. | 10-13-2011 |
| 20110125405 | AUTONOMOUS VEHICLE RAILROAD CROSSING WARNING SYSTEM - An autonomous vehicle collision/crossing warning system provides for simple, inexpensive and decentralized installation, operation and maintenance of a reliable vehicle collision/crossing warning system. The autonomous warning system preferably utilizes a single frequency TDM radio communication network with GPS clock synchronization, time slot arbitration and connectionless UDP protocol to broadcast messages among vehicles and components in the warning system. Adaptive localized mapping of components of interest within the warning system eliminates the need for centralized databases or coordination and control systems and enables new vehicles and warning systems to be easily added to the system in a decentralized manner. Preferably, stationary warning systems are deployed as multiple self-powered units each equipped to receive broadcast messages and to communicate with the other units by a low power RF channel in a redundant Master-Slave configuration. The communication schemes are preferably arranged for low duty cycle operation to decrease power consumption. | 05-26-2011 |
| 20100241296 | System and Method for Controlling Braking of a Train - A method of controlling braking of a train that includes obtaining in an on-board computer of the train a brake propagation delay time (T | 09-23-2010 |
| 20100224691 | Retention Assembly and Railway Spike Assembly Incorporating Same - A spike assembly is for securing a section of a railroad to a crosstie. The spike assembly includes a spike member of generally linear shape having a tip portion structured to be installed in the crosstie, a head portion disposed opposite the tip portion and structured to engage and retain a portion of the section, and a body portion disposed therebetween. The body portion including a pair of generally opposed sides, each side having a notched portion. The spike assembly further includes a clip member having a first portion, a second portion, and an intermediate portion disposed therebetween. Each of the first and second portions are disposed in a respective one of the notched portions and the clip member is structured to engage a portion of the cross tie. | 09-09-2010 |
