Abstract:
PURPOSE: A wireless signal dual reception system through the reception control of a ground wireless transceiver is provided to stably maintain communication between a mobile wireless transceiver and ground wireless transceiver of a train by implementing a system receiving Ethernet data and image data with one wireless transceiver. CONSTITUTION: A first mobile wireless transceiver(100) of a first train(1) driving on a first line(3) wirelessly communicates with a first ground wireless transceiver(110). The first ground wireless transceiver is composed of a first main module(112), a first diversity module(114), a first transmission module(116), and a first reception controller(118). The first main module and the first diversity module receives the onboard information of the first train through an upward mobile wireless transmission frequency(F1). The first reception controller monitors and controls the reception of the first main module and the first diversity module. [Reference numerals] (AA) ; (BB,FF) Main; (CC,GG) Diversity; (DD,HH) Reception controller; (EE) ; (II) Going upward; (JJ) Going downward
Abstract:
PURPOSE: A reliability and availability management system for urban transit vehicles is provided to reduce maintenance costs through efficient and safe operations of urban transit vehicles. CONSTITUTION: A reliability information management system(110) manages information on the reliability and availability of parts and devices of urban transit vehicles. A maintenance period optimization system(120) minimize LCCs(Life Cycle Costs) for parts and devices of urban transit vehicles. A quality improvement system(130) continuously improves the quality of urban transit vehicles. A real-time diagnosis system(140) implements condition sensing and diagnosis of parts and devices of urban transit vehicles. A failure handling system(150) provides expert-level support for handling a failure part. An operation management system(160) creates a failure data set.
Abstract:
PURPOSE: An estimation device and method of a railway wheel replacement cycle using a reliability analysis method is provided to reduce replacement costs of a wheel by estimating a railway wheel replacement cycle through reliability analysis. CONSTITUTION: A vehicle maintenance system(1) stores the working information of a wheel replacement cycle estimation server(2). The wheel replacement cycle estimation server is connected to the vehicle maintenance system. The wheel replacement cycle estimation server manages a wheel information database and working reference information. The wheel replacement cycle estimation server estimates a wheel replacement cycle by analyzing stored wheel information data. A display unit(3) displays data and an estimated outcome from the wheel replacement cycle estimation server. The vehicle maintenance system stores vehicle's working information in the wheel replacement cycle estimation server during wheel maintenance and replacement processes.
Abstract:
PURPOSE: An intelligent video monitoring simulation searching method is provided to execute a simulation according to a time sequence by storing sensor data and video data in real time. CONSTITUTION: The video data and sensor data of a camera is stored in a remote central data storage unit(S1). When event occurs, the center data storage unit stores metadata by creating the meta data which is interlocked with the video and sensor data(S2). The desired data is searched by the meta data(S3). The searched data is simulated according to a time sequence(S4). The video data is stored in the center data storage unit. The sensor data is stored in the center data storage unit through a sensor gateway connected to the sensor.
Abstract:
PURPOSE: A device and method for monitoring a line of a subway in real time are provided to prevent an accident by previously sensing the fine abnormality of a line. CONSTITUTION: A camera(100) for monitoring a line is installed to correspond to the traveling direction of a vehicle. A line analyzer(200) is connected to the camera and is arranged in the vehicle to analyze the state of a line. A vehicle RF transceiver(300) is installed in the vehicle to wirelessly transmit the line analysis result of the line analyzer. A ground RF transceiver(400) is arranged in a line to receive the line analysis result and transmits the line analysis result to a ground control center(C). The vehicle RF transceiver is wirelessly connected with one or more ground RF transceivers.
Abstract:
PURPOSE: A reliability calculating method of a railway vehicle using a simulation scheme is provided to effectively calculate the reliability of the railway vehicle by using a Monte Carle simulation scheme. CONSTITUTION: The reliability relation of a system of a railway vehicle and a subassembly are comprised of an RBD(Reliability Block Diagram)(S110). The RBD is expressed as reliability route matrix(S120) by using adjacent matrix which directly shows the connection relation of spaces. The reliability route matrix is unfolded(S130). Whether the trouble about all subassemblies comprising the system is or not is expressed by using a Monte Carlo simulation scheme(S140). System reliability is calculated through whether the trouble about the subassembly is or not(S150).
Abstract:
PURPOSE: An earthquake-proof reinforcement device for a pre-installed column with a polygonal cross-section, an earthquake-proof reinforcement structure, and an earthquake-proof reinforcement method are provided to be rapidly applied on a pre-installed column installed in a subway. CONSTITUTION: An earthquake-proof reinforcement device for a pre-installed column with a polygonal cross-section comprises a spacer member and an L-shaped steel plate(20). The spacer member is vertically installed on both walls of each edge of a pre-installed column(1) having a polygon section. The L-shaped steel plate is vertically installed on the outside of the spacer member installed at each edge.
Abstract:
PURPOSE: An aramid strip structure reinforcing method and a structure reinforcing member of an aramid strip, which prevents the deterioration of an aramid fibrous layer by a degradation prevention layer, are provided to improve earthquake resistance by using a PC steel wire. CONSTITUTION: An aramid strip structure reinforcing method is as follows. A plurality of steel wires(10) is wrapped with a plurality of aramid fibers. A resin bath(30) penetrates through a gap between the aramid fiber and the steel wire. The steel wire and aramid fiber are pressurized into the interval of guide plates in order to form a steel wire-embedded aramid fiber layer(40).