Abstract: The present disclosure relates to a CPU module for processing railway signals. The CPU module includes a first input unit that receives an input signal from an external apparatus; a second input unit that receives a second input signal and a second instruction signal from a CPU checking module; a first comparison unit that compares the two input signals and outputs a resulting input signal if it is determined that the two signals are identical; a signal processing unit that converts the resulting input signal into a first instruction signal; and a second comparison unit that compares the first instruction signal with the second instruction signal and outputs a resulting instruction signal if it determines the two instruction signals are identical; and a control unit that sends a synchronization signal for controlling operation timing of the two comparison units, the signal processing unit, and the CPU checking module.

Abstract: The present disclosure relates to a speed control system of a railway vehicle in consideration of a braking characteristic, and more particularly, to a speed control system of a railway vehicle in consideration of a braking characteristic, which calculates in real time a time-to-target-speed-crossing (TTTSC) that is a time required for a speed of a train to exceed a speed of an automatic train operation (ATO) profile through a future speed estimation of the train, and controls the speed of the train to be interlocked with the TTTSC.

Abstract: The present invention relates to a fault diagnosis apparatus for a brake of a train, an automatic train operation system operated due to degradation of braking performance using the same, and a fault diagnosis method for the brake of the train. In particular, the present invention is directed to determining that a fault has occurred in the brake when the difference between the current acceleration of the train and the required acceleration is greater than or equal to a reference value and safely moving the train to a stopping point through a powering operation or coasting operation such that emergency braking is not applied by an automatic train protection (ATP) system if the fault has occurred in the brake. When a fault occurs in the brake of the train, the train is automatically operated such that emergency braking is not triggered by an ATP system.

Abstract: An interconnection evaluation system according to the present disclosure includes a switchboard including at least one endpoint, at least one endpoint contact tester configured to transmit a digital input signal obtained from each endpoint, an automation tester configured to output a preset digital output signal to the switchboard, and to generate interconnection information at each endpoint by reflecting the digital output signal and digital input signal, and an interface unit configured to generate a switchboard status information of switchboard by reflecting the interconnection information.

Abstract: The present invention relates to an apparatus and method for processing an intermittent information in railway, the method comprising determining that data of a prescribed first length is received in first and second buffers; reading and storing the data of the first length in the first and second buffers; determining that data of a prescribed second length is received in the first and second buffers; reading and storing the data of the second length in the first and second buffers; and generating a final data by combining the data of the first length and the data of the second length.

Abstract: The present disclosure relates to an automatic train operation system in railway vehicles, the system including: a speed profile generation unit configured to generate speed profile information based on limited speed profile inputted from outside; a track database stored with track gradient information and track curvature information for each track segment; a train speed controller configured to control a speed of the train using a current position, a current speed and the speed profile information of the train inputted from outside; and a propulsion system fault diagnosis unit configured to diagnose a fault status of the propulsion system based on the current speed of the train, the track gradient information, the track curvature information and propulsion notch information inputted from the train speed controller, and to calculate a performance depreciation ratio when the propulsion system is faulted and to provide the performance depreciation ratio to the train speed controller.

Abstract: The present invention relates to a fault diagnosis apparatus for a brake of a train, an automatic train operation system operated due to degradation of braking performance using the same, and a fault diagnosis method for the brake of the train. In particular, the present invention is directed to determining that a fault has occurred in the brake when the difference between the current acceleration of the train and the required acceleration is greater than or equal to a reference value and safely moving the train to a stopping point through a powering operation or coasting operation such that emergency braking is not applied by an automatic train protection (ATP) system if the fault has occurred in the brake. When a fault occurs in the brake of the train, the train is automatically operated such that emergency braking is not triggered by an ATP system.

Abstract: The present disclosure relates to a CPU module for processing railway signals, and more specifically to a CPU module for processing railway signals that controls operation timing of a first comparator, a signal processing unit and a second comparator.

Abstract: The present disclosure relates to an apparatus for warning of exceeding speed limit in railway vehicles, wherein a train speed is estimated after a predetermined time, a remaining time is calculated until a train reaches a speed limit based on the estimated speed, and when the calculated time is smaller than a preset reference value, a warning signal is generated. Thus, an adequate warning can be given to cater to a train operation situation because a TTSLC indicator is used that notifies when an emergency braking will be activated by exceeding a set speed limit value after a certain time lapses, resultantly increasing the train operation frequency and the availability of trains.

Abstract: The present disclosure relates to a speed control system of a railway vehicle in consideration of a braking characteristic, and more particularly, to a speed control system of a railway vehicle in consideration of a braking characteristic, which calculates in real time a time-to-target-speed-crossing (TTTSC) that is a time required for a speed of a train to exceed a speed of an automatic train operation (ATO) profile through a future speed estimation of the train, and controls the speed of the train to be interlocked with the TTTSC.

Abstract: The present disclosure relates to an apparatus and a method for estimating a lateral force applied to a bogie due to contact between a wheel and a rail when a railroad vehicle drives in a curved section, the apparatus including: a lateral velocity estimation observer configured to calculate a lateral velocity estimate by estimating a lateral velocity based on a vertical acceleration, a lateral acceleration, a yaw velocity, and a wheel angular velocity of the railroad vehicle; and a lateral force estimation observer configured to calculate a lateral force estimate, by estimating a lateral force applied to a bogie of the railroad vehicle based on a steering angle of the railroad vehicle, a vertical force applied to the railroad vehicle, and a lateral velocity estimate calculated by the lateral velocity estimation observer.

Abstract: An apparatus for controlling speed in railway vehicles is disclosed, the apparatus estimates a future train speed and determines a control input (first speed control) configured to control a train speed based on a TTSLC {Time-To-Speed-Limit Crossing, a time taken by a train from a current time to exceed an ATP (Automatic Train Protection) speed profile, which is an ATP speed limit}, and determines a control input (second speed control) configured to control the train speed based on a difference between the ATP speed profile and an actual train speed, whereby the first speed control or the second speed control is selected in response to the TTSLC and outputted to the train.

Abstract: Disclosed is an apparatus and method for estimating railway vehicle masses, the method comprising checking if a train has entered an initial acceleration section and a straight section, receiving a speed of the train, each acceleration of the plurality of railway vehicles and each traction of the plurality of railway vehicles, dynamically modeling the train, and estimating masses of the plurality of railway vehicles and rail gradient.

Abstract: The present disclosure relates to an apparatus for warning of exceeding speed limit in railway vehicles, wherein a train speed is estimated after a predetermined time, a remaining time is calculated until a train reaches a speed limit based on the estimated speed, and when the calculated time is smaller than a preset reference value, a warning signal is generated. Thus, an adequate warning can be given to cater to a train operation situation because a TTSLC indicator is used that notifies when an emergency braking will be activated by exceeding a set speed limit value after a certain time lapses, resultantly increasing the train operation frequency and the availability of trains.

Abstract: The present disclosure relates to an automatic train operation system in railway vehicles, the system including: a speed profile generation unit configured to generate speed profile information based on limited speed profile inputted from outside; a track database stored with track gradient information and track curvature information for each track segment; a train speed controller configured to control a speed of the train using a current position, a current speed and the speed profile information of the train inputted from outside; and a propulsion system fault diagnosis unit configured to diagnose a fault status of the propulsion system based on the current speed of the train, the track gradient information, the track curvature information and propulsion notch information inputted from the train speed controller, and to calculate a performance depreciation ratio when the propulsion system is faulted and to provide the performance depreciation ratio to the train speed controller.

Abstract: Provided is a measuring apparatus and method of train wheel wear, the apparatus including a speed measuring unit measuring speed of a train, a position measuring unit measuring a position of the train, and a calculation unit calculating abrasiveness of a train wheel on a train based on the measured speed and position of the train, whereby status of the train wheel can be accurately learned to minimize the number of devices that may be additionally installed, and to quickly measure abrasiveness of the train wheel as well.

Abstract: Disclosed is a travel velocity compensation apparatus for railway vehicles and a method thereof for compensating a travel velocity when there is generated a slide between a wheel and a railway, the apparatus including a velocity measurement unit measuring a travel velocity of a railway vehicle, a velocity estimation unit estimating the travel velocity using travel information of railway vehicle and rail information received from at least one sensor, a detection unit generating wheel slide information by determining whether wheels of the railway vehicle slide, using the travel velocity of the railway vehicle measured by the velocity measurement unit and the travel velocity estimated by the velocity estimation unit, and a selection unit selecting, as a travel velocity, any one of the travel velocity measured by the velocity measurement unit using the wheel slide information generated by the detection unit and the travel velocity estimated by the velocity estimation unit.

Abstract: An interconnection evaluation system according to the present disclosure includes a switchboard including at least one endpoint, at least one endpoint contact tester configured to transmit a digital input signal obtained from each endpoint, an automation tester configured to output a preset digital output signal to the switchboard, and to generate interconnection information at each endpoint by reflecting the digital output signal and digital input signal, and an interface unit configured to generate a switchboard status information of switchboard by reflecting the interconnection information.

Abstract: The present disclosure relates to an apparatus and a method for estimating a lateral force applied to a bogie due to contact between a wheel and a rail when a railroad vehicle drives in a curved section, the apparatus including: a lateral velocity estimation observer configured to calculate a lateral velocity estimate by estimating a lateral velocity based on a vertical acceleration, a lateral acceleration, a yaw velocity, and a wheel angular velocity of the railroad vehicle; and a lateral force estimation observer configured to calculate a lateral force estimate, by estimating a lateral force applied to a bogie of the railroad vehicle based on a steering angle of the railroad vehicle, a vertical force applied to the railroad vehicle, and a lateral velocity estimate calculated by the lateral velocity estimation observer.

Abstract: An apparatus for controlling speed in railway vehicles is disclosed, the apparatus estimates a future train speed and determines a control input (first speed control) configured to control a train speed based on a TTSLC {Time-To-Speed-Limit Crossing, a time taken by a train from a current time to exceed an ATP (Automatic Train Protection) speed profile, which is an ATP speed limit}, and determines a control input (second speed control) configured to control the train speed based on a difference between the ATP speed profile and an actual train speed, whereby the first speed control or the second speed control is selected in response to the TTSLC and outputted to the train.