Abstract: Disclosed are a prefabricated wire mesh assembly for a ballast and a method of constructing a gravel-ballasted track using the same. When a gravel ballast is used by filling a box-shaped rebar mesh with crushed stones and injecting a filling material, the prefabricated wire mesh assembly increases injection efficiency by further installing an internal partition wall to effectively support loads without forming a separate ballast shoulder and injecting a filling material through injection pipes installed on an internal partition wall, and prevents water accumulation on a roadbed by a drainage pipe. The prefabricated wire mesh assembly for a ballast is assembled by installing the injection pipe along with the lower mesh and the internal partition wall, thereby allowing the filling material to be injected without installation of a plurality of separate injection pipes, and securing construction quality by increasing injection efficiency of the filling material through the installed injection pipes.

Abstract: A brake caliper diagnostic device for railway vehicles according to an embodiment of the present disclosure includes an internal pressure sensor located between a brake hose for delivering brake oil or compressed air to the brake caliper and an inlet of the brake caliper, internal temperature sensors respectively installed in the air breathers respectively located above and below the brake caliper, an assembly plate temperature sensor located adjacent to a brake pad assembly, a piston temperature sensor located on a surface of a brake caliper body adjacent to a piston, and a brake caliper monitoring device configured to determine whether or not the brake caliper is abnormal, based on data received from the internal pressure sensor, the internal temperature sensors, the assembly plate temperature sensor, and the piston temperature sensor.

Abstract: A positioning method and apparatus for positioning a terminal by using various data combinations are disclosed. The present disclosure in at least one embodiment provides a positioning terminal by using data combinations, including a data collection unit for collecting n access point (AP) scan data items from each of n APs (n is a natural number), a combination generation unit for generating a plurality of data combinations by combining the n AP scan data items in units of k (k is integers from 3 up to n), a position estimation unit for estimating a plurality of preliminary positions of the terminal from the plurality of data combinations, a clustering unit configured to cluster the plurality of preliminary positions into at least one cluster according to distances or densities of the plurality of preliminary positions, and a position determination unit for determining a final position of the terminal based on at least one cluster.

Abstract: A droplet-blocking air conditioning system inside a train compartment according to an exemplary embodiment may include an air conditioning system unit for regulating the temperature and humidity of the air inside the train compartment; an air supply regulation unit which uses downdraft air to supply the compartment with the air that has had the temperature and humidity regulated by the air conditioning system unit, thereby causing the droplets remaining in the compartment to flow below the compartment due to the downdraft air; mechanical and electronic motors which control a degree of rotation of the air adjustment member according to the degree of rotation of a rotary shaft inside the air supply regulation unit; and an air discharge unit for discharging the droplets and the downdraft air to the outside of the compartment.

Abstract: A method and an apparatus for timing measurement based positioning to minimize the number of scans is provided. The positioning method for a terminal includes estimating a temporary location of the terminal; analyzing characteristics of obstacles between the temporary location of the terminal and peripheral access points (APs) based on a pre-stored map on which the peripheral APs and the obstacles are indicated; calculating distances between the temporary location of the terminal and the peripheral APs based on the map; selecting at least three peripheral APs from among the peripheral APs according to at least one of the distances or the obstacle characteristics; generating timing measurement data with the at least three peripheral APs using identification information of the at least three peripheral APs; and estimating a current location of the terminal using the timing measurement data.

Abstract: A method for transmitting data between a first communication device including a first terminal and a first virtual time sensitive networks (TSN) bridge and a second communication device including a second terminal and a second virtual TSN bridge, without interruption of a stream configured by using a time sensitive network even when a communication device moves, according to the present technology, comprises the steps of: the first terminal transmitting a virtual TSN bridge connection request to the first virtual TSN bridge; the first virtual TSN bridge transmitting a virtual TSN port information request to the second virtual TSN bridge according to the virtual TSN bridge connection request; the second virtual TSN bridge transmitting, to the first virtual TSN bridge, information related to a virtual TSN port included in the second virtual TSN bridge; and the first virtual TSN bridge determining, on the basis of the information related to the virtual TSN port, a plurality of virtual TSN ports to be used for co

Abstract: The present disclosure provides a method and apparatus for providing an automated interlocking logic for moving-block railway signaling. According to at least one embodiment, the present disclosure provides a method for generating a train route for railway signaling based on moving block principle, including generating a directed graph for a track layout by calling pre-stored track information, generating a path matrix corresponding to the number of movement hops of a train based on the directed graph, and generating a train route from the path matrix, and verifying the train route by obtaining route information of the train from a mission of an automatic train supervision (ATS) system and comparing the route information with the train route.

Abstract: Provided is an electric dual-mode wiper system for a railway vehicle. The electric dual-mode wiper system for a railway vehicle includes a first wiper drive unit and a second wiper drive unit, and controls a synchronization operation of the first wiper drive unit and a second wiper drive unit.

Abstract: The present disclosure provides a curve portion mold structure for manufacturing a curved concrete panel for a mountain railway rack track and a curved concrete panel manufacturing method using the same in which, by forming a curve portion mold structure made of an outer mold and an inner mold to manufacture a curved concrete panel for a mountain railway rack track, the curvature of the outer mold and the curvature of the inner mold can be simultaneously adjusted, and a curve can be implemented by a difference in pressure introduction of a screw jack at a side surface of the outer mold.

Abstract: The present disclosure provides, as a sleeper pad for railroad sleepers in which a nonwoven fabric is attached to a rubber pad by a thermal fusion process, a nonwoven fabric-integrated sleeper pad using a rubber pad embedded with a stiffener and methods of manufacturing and constructing the same, which can adjust vertical support stiffness of the rubber pad by the stiffener embedded in the middle of the rubber pad and which can secure the flatness of the rubber pad by resisting bending deformation due to a difference in shrinkage between rubber and nonwoven fabric.

Abstract: A system for exclusive track resource sharing is provided. Some embodiments provide an exclusive track resource sharing system including onboard control units and a resource manager. Onboard control unit is provided in each of trains and is configured to communicate with another onboard control unit in another train. The resource manager is configured to record ownership status information of track resources of the plurality of trains, to provide the ownership status information of the track resources to the onboard control unit, and to generate and deliver a resource entitlement or resource authority to the onboard control unit. The resource authority is configured to be owned by a single onboard control unit. The onboard control unit possessing the resource authority is configured to seize or release the track resources corresponding to the resource authority and to control the track resources corresponding to the resource authority.

Abstract: In a method for detecting rail fracture, vibration data generated according to train operation is inputted, and the vibration data is collected using a distributed acoustic sensing (DAS) system. The inputted vibration data is imaged into the relationship between time and frequency. The imaged image is learned. Rail fracture of train is decided from the imaged vibration data, based on the learning.

Abstract: A brake caliper diagnostic device for railway vehicles according to an embodiment of the present disclosure includes an internal pressure sensor located between a brake hose for delivering brake oil or compressed air to the brake caliper and an inlet of the brake caliper, internal temperature sensors respectively installed in the air breathers respectively located above and below the brake caliper, an assembly plate temperature sensor located adjacent to a brake pad assembly, a piston temperature sensor located on a surface of a brake caliper body adjacent to a piston, and a brake caliper monitoring device configured to determine whether or not the brake caliper is abnormal, based on data received from the internal pressure sensor, the internal temperature sensors, the assembly plate temperature sensor, and the piston temperature sensor.

Abstract: The present disclosure provides an assembly type bridge lower structure having a socket type elastic duct coupler and a method of constructing the same in which, in construction of an assembly type bridge lower structure that consists of an assembly type foundation part, an assembly type pillar part, and an assembly type coping part, a socket type elastic duct coupler is utilized, thus enabling shear key joining at connection portions of the assembly type foundation part, the assembly type pillar part, and the assembly type coping part, easily accommodating of construction error displacements of the socket type elastic duct coupler, improving watertightness at connection portions of the precast segments, easily accommodating an insertion angle of the insertion member including a steel strand, a steel bar, a reinforcing bar, a FRP, or the like, and preventing an overflow phenomenon that occurs when epoxy is excessively applied during bonding between the precast segments.

Abstract: A method and apparatus for cooperative positioning is disclosed herein. A method for cooperative positioning performed by a target device includes: scanning a beacon signal transmitted by at least one peripheral device; determining whether at least one peripheral device exist within a reference radius based on the beacon signal; when the at least one peripheral device is within the reference radius, transmitting a cooperative positioning request to the at least one peripheral device; receiving, in response to transmitting the cooperative positioning request, location of the at least one peripheral device and a degree of reliability for the location of the at least one peripheral device; and determining a location of the target device based on the location and the degree of reliability.

Abstract: Provided is an energy harvester and an engine monitoring system. An engine monitoring system using an energy harvester includes at least one or more self-power generation wireless sensor nodes for generating electric energy using the energy harvester and monitoring an engine; and a management server that receives and manages sensing information received from the self-power generation wireless sensor nodes.

Abstract: Proposed is an anti-vibration pallet. More particularly, the present disclosure relates to an anti-vibration pallet that is capable of realizing an effect of an air spring by using only a combination of an auxiliary mount and a main mount that are formed of elastic bodies provided between an upper plate and a lower plate, and is also capable of maximizing an anti-vibration performance by controlling an optimal anti-vibration load according to a cargo load. In order to achieve the objectives described above, the present disclosure includes: an upper plate on which cargo is loaded on a top portion thereof; a lower plate positioned below the upper plate; a main mount installed between the lower plate and the upper plate; and an auxiliary mount installed outside the main mount.

Abstract: A foldable container according to an exemplary embodiment of the present disclosure includes: a lower panel; an upper panel provided in parallel with the lower panel; first and second lateral panels of which upper and lower ends are respectively connected to the upper panel and the lower panel to be rotatable along a longitudinal direction of the upper panel and the lower panel and which are configured to be folded toward the inside of the foldable container; and front and rear panels connected to the lower panel to be rotatable along a transverse direction of the lower panel.

Abstract: The present disclosure provides a method and apparatus for determining coupling and decoupling positions between trains. In at least one embodiment, the present disclosure provides a method performed by an apparatus for determining coupling and decoupling positions between trains, the method comprising collecting performance data, simulation data, and real-time data, calculating a first parameter and a second parameter, and determining the coupling and decoupling positions between the trains.

Abstract: The present disclosure provides a sealing apparatus for use in a hypertube, which includes a first tube, a second tube having one end connected to an end of the first tube, and a gasket including a seal made of a fiber structure formed with a space that is filled with a sealing fluid, wherein the gasket is configured to seal a space between the first tube and the second tube.