The wireless communication system comprises: a plurality of ground radio sets installed along a railway that carry out the transmission/reception of a radar signal with a first frequency and the transmission/reception of a communication signal with a second frequency; a vehicle radio set on a train that carries out the transmission/reception of a communication signal with the second frequency; and a switching control device that controls the switching of ground radio sets that are to communicate with the vehicle radio set based on the reception level of the radar signal. Furthermore, the configuration allows the ground radio sets that are not communicating with the vehicle radio set to transmit a radar signal, and allows the ground radio set that has started communicating with the vehicle radio set to transmit a radar signal and a communication signal.

The wireless communication system comprises: a plurality of ground radio sets installed along a railway that carry out the transmission/reception of a radar signal with a first frequency and the transmission/reception of a communication signal with a second frequency; a vehicle radio set on a train that carries out the transmission/reception of a communication signal with the second frequency; and a switching control device that controls the switching of ground radio sets that are to communicate with the vehicle radio set based on the reception level of the radar signal. Furthermore, the configuration allows the ground radio sets that are not communicating with the vehicle radio set to transmit a radar signal, and allows the ground radio set that has started communicating with the vehicle radio set to transmit a radar signal and a communication signal.

This position detection system is provided with: a distance measuring sensor that is attached to a vehicle traveling along a track and is capable of measuring a distance over a predetermined range in the track width direction; an edge position detecting unit that detects an edge position in the track width direction of the track on the basis of distance measurement data from the distance measuring sensor; and a distance calculation unit that calculates a distance in the track width direction between a reference position of the track that is specified from the edge position and a reference position of the vehicle to which the distance measuring sensor is attached.

Embodiments of the present disclosure provide a method and a device for cooperative control of multiple trains. The method includes: S1, establishing a train dynamic model of urban rail transit; S2, modeling a train control system of urban rail transit based on train-to-train communication; S3, constructing, according to the dynamic model and a control system model, an optimized control target which comprehensively considers distance convergence and speed convergence of train formation; and S4, cooperatively controlling, on the basis of an artificial potential field method and Kalman filtering and according to the optimized control target, the multiple trains. The present disclosure is capable of effectively shortening a train headway.

The invention relates to a device for automatic dispensing of a maintenance agent, such as an anti-icing agent or a de-icing agent, on specific parts of a rolling stock travelling on a railway track. The device comprises a dispensing unit, a detection unit configured to generate a detection signal before said rolling stock reaches the dispensing unit, a sensor unit configured to determine position and velocity of the rolling stock, and a control unit. The control unit is configured to receive said detection signal from said detection unit, determine a dispensing schedule based on said rolling-stock velocity, and transmit a control signal to the dispensing unit to control said dispensing unit based on said dispensing schedule. Furthermore, the present inventive concept also relates to an associated method.

A system for pacing a train having a plurality of locomotives is disclosed. The system may include an signaling system onboard component configured to receive a signal indicative of a requested time of arrival (RTA) of the train, a locomotive health system configured to output one or more health signals indicative of a health status of each of the plurality of locomotives, and an energy management system in electronic communication with the signaling system onboard component and the locomotive health system. The energy management system may be configured to generate driving command signals based on the RTA and the one or more health signals, generate an RTA confirmation signal based on the one or more health signals, the RTA confirmation signal being indicative of whether the train will achieve the RTA, and communicate the RTA confirmation signal to a train signaling system via the signaling system onboard component.

In one embodiment, a railroad scout vehicle system includes a scout vehicle and a processing unit. The scout vehicle may include at least two wheels configured to engage a set of railroad tracks, a motor mechanically coupled to at least one of the wheels, a speed controller, an electromagnetic sensor aimed at the set of railroad tracks, a positioning receiver, a local speed sensing device and a transceiver. The speed controller may be coupled to the motor and configured to control the speed of the scout vehicle in order to maintain an appropriate distance between the scout vehicle and a train traveling behind. The processing unit may be configured to transmit the track status information via the transceiver, receive train speed and position signals from the train via the transceiver.

A system and a method for preventing collision between a first train and a second train are provided. The system includes at least one first subsystem installed on a first train. The at least one first subsystem is configured to broadcast a message indicative of a status of the first train. The system further includes at least one second subsystem installed on a second train configured to selectively receive the broadcast message from the at least one first subsystem on the first train. The second subsystem determines the status of the first train by analyzing the broadcast message. An action to be performed at the second train for preventing a collision between the first train and the second train is determined based on the status of the first train. One or more instructions are generated for performing the action at the second train.

A communication system may be provided that includes a lead communication assembly configured to be disposed onboard a lead vehicle in a multi-vehicle system, and a remote communication assembly configured to be disposed onboard a remote vehicle in the multi-vehicle system. The lead communication assembly and the remote communication assembly may be configured to communicate with each other via a wired connection extending along the multi-vehicle system from at least the lead vehicle to at least the remote vehicle. Additionally, the lead communication assembly and the remote communication assembly may also be configured to communicate with each other via a wireless connection. The lead communication assembly and the remote communication assembly may also be configured to switch back-and-forth between communicating with each other via the wired connection and via the wireless connection.

Methods and apparatus for real time machine vision and point-cloud data analysis are provided, for remote sensing and vehicle control. Point cloud data can be analyzed via scalable, centralized, cloud computing systems for extraction of asset information and generation of semantic maps. Machine learning components can optimize data analysis mechanisms to improve asset and feature extraction from sensor data. Optimized data analysis mechanisms can be downloaded to vehicles for use in on-board systems analyzing vehicle sensor data. Semantic map data can be used locally in vehicles, along with onboard sensors, to derive precise vehicle localization and provide input to vehicle to control systems.