A railroad measurement system includes a railroad track powered measurement device providing measurement signals of electrical quantities across rails of a railroad track; a wayside control device adapted to receive the measurement signals provided by the railroad track powered measurement device; and a communication network interfacing with the railroad track powered measurement device and adapted to transmit data, wherein the railroad track powered measurement device is adapted to transmit the measurement signals of the electrical quantities via the communication network, and the wayside control device is adapted to receive the measurement signals.

A method and system for health assessment of a track circuit and/or of a track section, the track circuit being configured for detecting the presence of a vehicle on the track section between a transmitting end and a receiving end of the track circuit. The method, implemented by an electronic device, comprises obtaining, from a sensor device placed near the receiving end, samples of an electrical parameter of an electric signal transmitted between the transmitting end and the receiving end of the track section, forming a temporal series of received samples, applying an automatic clustering algorithm to separate the received samples in a predetermined number of clusters, selecting one of the clusters and determining, for the selected cluster, a first peak value of the received samples classified within the selected cluster, and calculating a track circuit health indicator depending on the first peak value determined for the selected cluster.

A train detection system for a railway track section placed on a track bed, the track section having two rails, the train detection system comprising at least one cable, the cable being placed across the two rails, a transmitter connected to the cable and configured to emit an emitted signal into the at least one cable, a receiver connected to the cable and configured to receive a received signal related to the emitted signal having passed through the cable, and capable of determining, according to the received signal, between an unoccupied state where no railway vehicle is present on the track section, and an occupied state where the track section is occupied by a railway vehicle. The cable is buried under the track bed.

According to another aspect a system is provided for detecting a track signal leakage of a track signal on at least one railway track, a track signal being a signal transmitted via the rails of a railway track to detect the presence of a railway vehicle and/or transmit a provide information to a railway vehicle, the at least one railway track comprising at least two adjacent track sections being isolated against each other, the system comprising: a controller according to an embodiment disclosed herein; at least one transmitter for emitting a test signal via a first track section, the at least one transmitter being connected to the controller; and a plurality of receivers for receiving the test signal via one or more track sections, wherein each receiver is associated to at least one track section.

Estimating electrical parameters of a track circuit including a transmitter, a receiver, and a track section between the transmitter and receiver. The transmitter outputs, over the track section towards the receiver, a signal including a data packet part, and the signal received by the receiver is decoded to determine the data packet received. Simulated signals are generated, via a predetermined software model including parameters of the track circuit, by varying an actual value input for the model parameters, each signal generated corresponding to actual values input for the parameters. Each simulated signal is compared with the signal received at a receiver until finding a part of a simulated signal that matches a corresponding part of the signal received at a receiver. The actual parameter values corresponding to the simulated signal that match the signal received at the receiver are estimated as the actual parameters of the track circuit.

A coded track circuit of a signaling control equipment to be located at a wayside location of a railway track is provided. The coded track circuit comprises a first track circuit card coupled to rails of the railway track to detect an absence of a train on the railway track, inform signallers and control relevant signals via track codes. The coded track circuit further comprises a second track circuit card coupled to rails of the railway track, the second track circuit card is inactive but ready to provide a warm-standby or a hot-standby such that the second track circuit card to take over control from the first track circuit card should the first track circuit card fails.

Railway detection system for detecting the presence of a railway vehicle on a railway track section comprising at least two rails, the railway track section comprising a first end and a second end opposite to the first end in a longitudinal direction of the railway track section, the railway detection system comprising a track circuit system comprising a signal generator electrically coupled to the first end of the railway track section, the signal generator being configured for generating a first track circuit signal to be injected into the railway track section at the first end, wherein the signal generator is adapted to generate a first component of the first track circuit signal comprising at least one DC pulse; generate a second component of the first track circuit signal, and add the first and the second component so as to obtain the first track circuit signal.

A wayside communication system for transmitting coded current signals through running rails of a railroad track between wayside control devices. A power line common to the wayside control devices is used as the return path for the current signals. The system features train and broken rail detection. The system allows sending signals long distances since rail to rail current leakage is no longer an issue.

A monitoring device monitoring a railway track, including a track interface connecting the monitoring device to the railway track. Also included is a detector detecting a first track pulse having a first duration emitted on the railway track and received through the track interface. The detector can detect a start and end time of the first track pulse. A charger is connected to the detector and has an energy storage element. Further, there is an emitter emitting a second track pulse on the railway track through the track interface by using energy stored in the energy storage element and the detector can send a transmit control signal to the emitter.

A system includes a track having conductive rails, a signal generating circuit coupled to the conductive rails, and an electrical power source coupled to the conductive rails via the signal generating circuit. The signal generating circuit includes a power supply for generating trigger signals. The electrical power source provides an electrical signal to the conductive rails via the signal generating circuit. The signal generating circuit generates a first trigger signal within the electrical signal at a first time interval and generates a second trigger signal within the electrical signal at a second time interval. The first trigger signal corresponds to a beginning of a communication signal and the second trigger signal corresponds to an end of the communication signal. The communication signal is transmitted over a predetermined number of cycles of the electrical signal provided by the electrical power source. The predetermined number of cycles correspond to a coded communication.