A monitor vehicle for a rail system includes a wheeled trolley, an overhead vehicle body, at least one supporting structure, and at least one first sensor. The wheeled trolley is operable to move over one or more rails of the rail system. The supporting structure connects the wheeled trolley and overhead vehicle body. The first sensor is on the wheeled trolley and configured to detect at least one first parameter of the one or more rails of the rail system.

A method, an apparatus, a system, and a computer program product for managing safety for a railway system. A computer system generates a probability of a safety issue for a particular section of a railroad track in the railway system using information from a set of weather event sources. A set of unmanned aerial vehicles is dispatched to the particular section of the railroad track when the probability of the safety issue exceeds a threshold. A number of images of the particular section of the railroad track is received from the set of unmanned aerial vehicles. A risk score for the safety issue at the particular section of the railroad track is generated using the number of images by the computer system. An action is performed to resolve the safety issue using the risk score, enabling the computer system to manage safety issues for the railway system.

Various embodiments include a sensor device for checking a rail section comprising: a sensor element; and a magnetic fastening element. The magnetic fastening element is configured to attach the sensor element to the rail section.

At least one fiber-optic sensor unit measures a mechanical variable which affects a rail having a certain length and a neutral axis that extends along said length of the rail. The at least one fiber-optic sensor unit is disposed at an angle of 30 to 60, in particular 45, relative to the neutral axis or at an angle of 30 to 60, in particular 45, relative to the neutral axis. The at least one fiber-optic sensor unit is irradiated with primary light in order to generate a signaling light in a reflection mode or transmission mode. The intensity of the signaling light is sensed. The signaling light is evaluated.

Provided is versine trolley-type equipment for inspecting a track irregularity, having sensors respectively provided to a trolley so as to measure a height difference, direction misalignment, gauge irregularity, rail longitudinal slope, cant and the like of railroad rails, and simultaneously measuring the height difference and direction misalignment of a left rail and a right rail so as to reduce a measurement time by half and, also, allowing left and right measurement frames to freely move in a vertical direction within a predetermined range, thereby bringing front and rear trolley wheels of the left and right measurement frames into close contact with the rails all the time even if the rails are warped.

The present invention defines a method of determining a vertical profile signal of a rail surface that includes, obtaining a vertical acceleration signal acc.sub.1, by measuring vertical acceleration of a bogie of a rail vehicle that runs on the rail surface; processing the vertical acceleration signal to obtain a vertical velocity signal; determining the vertical profile signal of the rail surface, by using the vertical acceleration signal and the vertical velocity signal as inputs to a simulation model of the bogie, the model having an unsprung mass connected to a sprung mass, the vertical acceleration signal acc.sub.1 represents the vertical acceleration of the unsprung mass; and measuring a linear velocity signal of the rail vehicle, the linear velocity signal is used in the step of determining to convert the vertical profile signal from the time domain to the distance domain.

Geo-defect repair modeling with location uncertainty is provided. A method includes logically dividing a railroad network into segments each of a specified length. The method also includes identifying, via a computer processor, geo-defects and approximated locations of the geo-defects occurring at each inspection run for each of the segments. The method also includes calculating, via the computer processor, a rate of increase in amplitude of each of the geo-defects for each of the segments between inspection runs, determining a correlation of the geo-defects between the inspection runs as a function of the approximated locations, and predicting a deterioration rate for each of the geo-defects based on the calculating.

An optical fiber detection device with a steel rail as an elastomer and a railway overload and unbalanced load detection system. The optical fiber detection device includes a shear force detection device, the shear force detection device includes an optical fiber sensitive element which is fixed on a neutral axis of the steel rail through low-energy spot welding.

A video content analysis system for mobile assets that includes track detection and infrastructure monitoring component. The track detection and infrastructure monitoring includes a reinforcement learning component, an object detection and location component, and an obstruction detection component to analyze video data, audio data, vehicle data, weather data, and route/manifest data to determine internal and/or external conditions relating to an the asset. A data acquisition and recording system uploads the data, internal and/or external condition information, object detection information, object location information, and obstruction detection information to a remote memory module and provides streaming video data in real-time to a remotely located user. Remotely located users can view the data in various view modes through a web browser or virtual reality device, which provides for quicker emergency response, validates the effectiveness of repairs and rerouting, and monitors crew performance and safety.

A system for surveying a track includes two outer measuring devices and a central measuring device disposed therebetween, relative to the longitudinal direction of the track. Each measuring device has a specific position relative to the track in order to detect geometric track parameters. One outer measuring device includes a camera with a recording area in which a measuring object of the other outer measuring device and a measuring object of the central measuring device are disposed. The camera is connected to an evaluation device for pattern recognition. All of the position parameters of the track required for precise lining and levelling of the track are thus recorded by a single camera. A method of operating the system is also provided.