Methods, program products, and systems for building a location fingerprint database for a transit system are described. The transit system can be a subway system including underground train stations and routes where location determination using GPS signals is difficult or impossible. A sampling device can measure signals, e.g., radio frequency (RF) signals detected at the stations or on the routes. A location server can construct a location fingerprint for each of the stations and the routes. Each location fingerprint can represent expected signal measurements by a user device if the user device is located at the respective station or route. The location server can provide the location fingerprint to a user device for the user device to determine a location of the user device within the station or on the route.

Aspects of the subject disclosure may include, for example, a system for transmitting first electromagnetic waves that propagate on a surface of a component of a transit system, and receiving second electromagnetic waves that propagate on the surface of the component of the transit system. Other embodiments are disclosed.

The present disclosure provides a method for obtaining an area speed limit value. The method includes: mapping, to a coordinate system, a track section on a train running line in electronic map data; respectively storing, into a temporary speed limit information list and a constant speed limit information list in a one-to-one correspondence mode, speed limit data of a temporary speed limit and speed limit data of a constant speed limit of the train in the track section according to coordinates of the track section in the coordinate system; combining speed limit data in the temporary speed limit information list with speed limit data in the constant speed limit information list to obtain a strictest speed limit list of the train; and obtaining, by searching the strictest speed limit list, a strictest speed limit value of an area corresponding to a real-time coordinate position of the train.

The present disclosure provides a method for obtaining an area speed limit value. The method includes: mapping, to a coordinate system, a track section on a train running line in electronic map data; respectively storing, into a temporary speed limit information list and a constant speed limit information list in a one-to-one correspondence mode, speed limit data of a temporary speed limit and speed limit data of a constant speed limit of the train in the track section according to coordinates of the track section in the coordinate system; combining speed limit data in the temporary speed limit information list with speed limit data in the constant speed limit information list to obtain a strictest speed limit list of the train; and obtaining, by searching the strictest speed limit list, a strictest speed limit value of an area corresponding to a real-time coordinate position of the train.

The present invention relates to a train autonomous control system and method based on train-to-train communication. The control system includes an automatic train supervision system ATS, an object controller OC, a train-mounted subsystem CC, a tag reader subsystem, a query transponder, and a data communication system DCS, the automatic train supervision system ATS is connected to the train-mounted subsystem CC, and the train-mounted subsystems CC of adjacent trains are in communication connection with each other, and the control system further includes a railside resource manager WRC, and the railside resource manager WRC is respectively connected to the automatic train supervision system ATS, the train-mounted subsystem CC, the object controller OC, the tag reader subsystem, and the query transponder. Compared with the prior art, the present invention has the advantages of reducing a transmission link of data information over a network, improving operation efficiency of the system, and the like.

The present invention relates to a train autonomous control system and method based on train-to-train communication. The control system includes an automatic train supervision system ATS, an object controller OC, a train-mounted subsystem CC, a tag reader subsystem, a query transponder, and a data communication system DCS, the automatic train supervision system ATS is connected to the train-mounted subsystem CC, and the train-mounted subsystems CC of adjacent trains are in communication connection with each other, and the control system further includes a railside resource manager WRC, and the railside resource manager WRC is respectively connected to the automatic train supervision system ATS, the train-mounted subsystem CC, the object controller OC, the tag reader subsystem, and the query transponder. Compared with the prior art, the present invention has the advantages of reducing a transmission link of data information over a network, improving operation efficiency of the system, and the like.

A wireless communication system for an evacuated tube transportation system, wherein the evacuated transportation system comprises a tube or tunnel which is at least partly evacuated to provide a low-pressure within the tube/tunnel, and a guiding structure to guide a moving capsule along the tube/tunnel. The wireless communication system comprises a plurality of base stations arranged on the inside of the tube/tunnel, distributed along the length of the tube/tunnel, and connected together in a backbone communication path, the communication path further being connected to an exterior network, enabling communication with at least one stationary communication server outside the tube/tunnel, and wherein the moving capsule comprises a router for communication with said base stations.

A system is provided that include at least one positioning system that can detect a location or position of a vehicle or a portion of a vehicle group that includes the vehicle, at least one sensor positioned on or associated with the vehicle that can generate sensor data of a determined parameter or condition, and a controller in communication with the sensor and the positioning system. The controller can determine that a hazard event has occurred based at least partially on sensor data, and can communicate a hazard event notification based at least in part on the location data and the sensor data to a remote server.

A method and device for detecting a derailment state of a rail vehicle, wherein at least one kinematic variable is respectively measured via first and second sensors with respect to first and second wheelset end portions and corresponding measurement signals are formed, processed and evaluated, where values of first and second falling velocities y with respect to the first and second wheelset end portions are respectively calculated from the measurement signals via a computing unit and a derailment state of the rail vehicle is detected via a first comparison operation of the first falling velocity and the second falling velocity with a first falling velocity limit value and a second falling velocity limit value, which has a greater magnitude than the first falling velocity limit value such that a high level of certainty in the detection of derailment states is achieved.

A wireless train control network is adapted for forwarding data between a remote radio in an EOT unit and remote radio at the head of train using the base stations of the wireless train control network. A base station's current table of base station radios and remote radios that it hears or has a connection is distributed to neighboring base stations by a routing information exchange application. Tables are sent to and received from the application using a messaging service of the wireless train control network. A base station builds from the tables of neighboring base stations a route to a remote radio to which it is not connected, and forwards wireless data packets received for it by transmitting it to another base station radio.