Abstract:
In a railroad train having a brake system including a fluid carrying brake pipe (14) having an exhaust (52) and connecting a lead locomotive (12) and at least one remote locomotive, the train further comprising a communication system (24) for communicating between the lead locomotive and the remote locomotive, a method for adaptively determining a brake application for signaling a remote locomotive of a train during a communication loss includes determining a brake system operating condition of the train (72). The method also includes determining an operability condition of the communication system (74) and identifying an operator commanded brake application level at the lead locomotive during a communication system inoperability condition (76). The method further includes determining a signaling brake application level sufficient for signaling the remote locomotive via the brake pipe responsive to the monitored brake system operating condition (78).
Abstract:
A sensing system includes a leading sensor, a trailing sensor, and a route examining unit. The sensors are coupled to a vehicle system that travels along a route. The leading sensor acquires first inspection data indicative of a condition of the route as the vehicle system travels over the route. The condition may represent the health of the route. The trailing sensor acquires additional, second inspection data that is indicative of the condition to the route subsequent to the leading sensor acquiring the first inspection data. The route examining unit identifies a section of interest in the route based on the first inspection data acquired by the leading sensor. The route examining unit also directs the trailing sensor to acquire the second inspection data within the section of interest in the route when the first inspection data indicates damage to the route in the section of interest.
Abstract:
In a system and method for controlling a distributed power rail vehicle consist, each of at least one powered rail vehicle in the rail vehicle consist is designated for operation as a remote trail. Based on the designation, a respective brake pipe valve of each of the at least one powered rail vehicle is automatically operated to a cut-out mode. Upon initiation of a service, an emergency, and/or a penalty brake application in the rail vehicle consist, the respective brake pipe valve of each of the at least one the powered rail vehicle is automatically operated to a cut-in mode. Upon completion of the service, emergency, and/or penalty brake application in the rail vehicle consist, the respective brake pipe valve of each of the at least one powered rail vehicle is automatically operated back to the cut-out mode.
Abstract:
A method that includes comparing a first brake pressure measured at a first transducer that is part of a braking system on a lead powered unit of a distributed power (DP) system to a second brake pressure measured at a second transducer that is part of a braking system on a remote powered unit of the DP system. The method also includes determining whether the second transducer is functioning within designated operational parameters when the DP system is operating in a DP mode based on comparing the first brake pressure to the second brake pressure.
Abstract:
An adaptive brake system for a distributed power train responsive to an interruption in a communication system for the train and a brake application initiated at the lead locomotive, reduces the brake pipe fluid pressure at a lead locomotive and a remote locomotive to a predetermined pressure level to reduce in-train forces that may occur as a result of the pressure differentials in the brake pipe line of the lead and remote locomotives.
Abstract:
A system is provided for establishing a wireless-based communication link between a lead locomotive and a remote locomotive. A user on the lead locomotive is prompted to input a railroad and number identifier of the remote locomotive. A link command signal is transmitted from the lead locomotive, based on a predetermined number identifier of the lead locomotive, and the inputted railroad and number identifier. A second processor on the remote locomotive respectively compares the predetermined number identifier of the lead locomotive, the inputted railroad and number identifier of the lead locomotive, with an inputted number identifier of the lead locomotive, a predetermined railroad and a predetermined number identifier of the remote locomotive. A link reply signal, is transmitted from the remote locomotive, based on the comparison performed by the second processor, to establish the communication link. Additionally, a method is provided for establishing the wireless-based communication link.
Abstract:
A cushion strap assembly and method of making same is provided which cushion strap assembly is adapted to be used in a brassiere shoulder strap. The assembly includes a top fabric layer, a first adhesive web layer positioned on one side of the top fabric layer, and a base layer positioned on the first adhesive layer on the side opposite that of the top fabric layer. The assembly also includes a cushion filler that is a first cushion layer, a third adhesive web layer positioned on a side of the first cushion layer, a second cushion layer positioned on the third adhesive layer on the side opposite that of the first cushion layer. A second adhesive web layer can be part of the cushion filler or separate. In either event, it is positioned on the first cushion layer on the side opposite the third adhesive web layer. The assembly further includes a fourth adhesive web layer positioned on the second cushion layer on the side opposite that of the third adhesive web layer, and a bottom fabric layer positioned on the fourth adhesive web layer on the side opposite that of the second cushion layer.
Abstract:
Method and apparatus for compensating for transient effects in pneumatically operated air brake system for a railway vehicle. A look up table or experimentally determined second order correction values is stored in a memory. Based on the magnitude of a previous application of the brakes, a correction value is selected from the look up table having a magnitude to compensate for transient errors in the system. The correction value is then diminished by fixed decrements at fixed intervals. Upon a subsequent application of the brakes, the diminished correction value is used to adjust the pressure communicated to braking mechanisms located on the train cars.
Abstract:
An optical turret shaped for minimum aerodynamic and aero-optic impact at supersonic speeds. The turret optics includes a common optical element for scanning the optical tracking beam and the projected laser beam to provide for automatic alignment of both beams. Separate windows associated with the tracking beam and the laser output beam is provided for increased efficiency, the window material in each window being compatibel with the optical wavelengths passing therethrough.
Abstract:
A method for communicating includes transmitting a command message from a lead vehicle to remote vehicles in a vehicle consist. Reply messages are transmitted from the remote vehicles to the lead vehicle. The reply messages include statuses of the remote vehicles that transmitted the reply messages. The status of a first remote vehicle but not of the second remote vehicle is received at the lead vehicle and the status of a second remote vehicle is received at the first remote vehicle. The status of the second remote vehicle is stored at the first remote vehicle a retry message is transmitted from the lead vehicle to the remote vehicles. The retry message is received at the first remote vehicle and a repeat message is transmitted from the first remote vehicle to the lead vehicle that includes the status of the second remote vehicle.