Abstract: A method of manufacturing a composite material pressure vessel is provided. The method may include preparing a liner provided with an entrance portion; and forming an inner shell by winding at least one composite material filament around the liner, wherein the forming of the inner shell includes simultaneously winding a plurality of enamel wire strain sensors around the liner together with the composite material filament by differentiating a start point where each of the plurality of enamel wire strain sensors manufactured in the form of a filament starts to be wound around the liner. A composite material pressure vessel is further manufactured by using the method.

Abstract: An electronic stability control system for a vehicle is disclosed.

Abstract: An electronic stability control system for a vehicle is disclosed.

Abstract: A method of manufacturing a composite material pressure vessel is provided. The method may include preparing a liner provided with an entrance portion; and forming an inner shell by winding at least one composite material filament around the liner, wherein the forming of the inner shell includes simultaneously winding a plurality of enamel wire strain sensors around the liner together with the composite material filament by differentiating a start point where each of the plurality of enamel wire strain sensors manufactured in the form of a filament starts to be wound around the liner. A composite material pressure vessel is further manufactured by using the method.

Abstract: A method of diagnosing a condition of a central processing unit (CPU) of a transportation device and calculating a remaining life is disclosed. The method includes detecting, by a controller, data including condition values; comparing, by the controller, the number of previously accumulated condition values with a set number of condition values; constructing, by the controller, a database in response to a determination that the number of previously accumulated condition values is smaller than the set number of condition values; and diagnosing, by the controller, a condition of the CPU in response to a determination that the number of previously accumulated condition values is greater than or equal to the set number of condition values. A system including the controller configured to execute the above method is further disclosed.

Abstract: An apparatus for providing an automotive preventive maintenance service includes: a vehicle information creator that creates vehicle information including vehicle diagnosis information obtained in real time while a vehicle is driven and vehicle state information showing a current state of the vehicle; a vehicle breakdown generation predictor that creates vehicle part states each composed of a preventive maintenance emergency degree and a vehicle part on the basis of the vehicle information, and predicts breakdown generation of the vehicle; an automotive repair shop recommender that recommends an automotive repair shop based on a cost or a distance on the basis of the preventive maintenance emergency degree in at least one of the vehicle part states; and a preventive maintenance service compensator that detects whether to perform a maintenance service about a corresponding vehicle part state according to the preventive maintenance emergency degree, and provides preventive maintenance service compensation.

Abstract: A method of diagnosing a condition of a central processing unit (CPU) of a transportation device and calculating a remaining life is disclosed. The method includes detecting, by a controller, data including condition values; comparing, by the controller, the number of previously accumulated condition values with a set number of condition values; constructing, by the controller, a database in response to a determination that the number of previously accumulated condition values is smaller than the set number of condition values; and diagnosing, by the controller, a condition of the CPU in response to a determination that the number of previously accumulated condition values is greater than or equal to the set number of condition values. A system including the controller configured to execute the above method is further disclosed.

Abstract: An apparatus for providing an automotive preventive maintenance service includes: a vehicle information creator that creates vehicle information including vehicle diagnosis information obtained in real time while a vehicle is driven and vehicle state information showing a current state of the vehicle; a vehicle breakdown generation predictor that creates vehicle part states each composed of a preventive maintenance emergency degree and a vehicle part on the basis of the vehicle information, and predicts breakdown generation of the vehicle; an automotive repair shop recommender that recommends an automotive repair shop based on a cost or a distance on the basis of the preventive maintenance emergency degree in at least one of the vehicle part states; and a preventive maintenance service compensator that detects whether to perform a maintenance service about a corresponding vehicle part state according to the preventive maintenance emergency degree, and provides preventive maintenance service compensation.

Abstract: Disclosed is a railway vehicle major component and system diagnosis apparatus, which includes: a railway vehicle state summarizer that generates a feature value for at least one major component and system of a railway vehicle by summarizing sensing values collected through a plurality of sensors for a first period as a multi-dimensional railway vehicle parameter; a database generator that generates a database for at least one major component and system of a railway vehicle by normally distributing a plurality of feature values accumulated for a second period composed of a plurality of continuous first periods; and a railway vehicle diagnosis performer that detects and precisely diagnose abnormal situations in at least one major component and system of a railway vehicle on the basis of the database for major components and systems.

Abstract: The present invention relates to a method for monitoring a signal having a multi-band frequency. The method for monitoring a signal having a multi-band frequency detected in a target to be monitored includes: dividing the multi-band frequency into at least two regions; setting update periods to be different from each other for each of the divided frequency bands; and displaying monitoring states of the divided frequency bands depending on the update periods set to be different from each other.

Abstract: A signal measuring/diagnosing system and method, and methods and systems in which the same are applied to individual devices, which are capable of measuring and diagnosing a target signal. A first exemplary embodiment of the present invention provides a signal measuring/diagnosing system that measures and diagnoses signals of a target system, including: an analog/digital converter that converts analog signals of the target system into digital signals and corrects the converted digital signals; a signal pre-processor that sets analysis target frequency bands so as to selectively store signals, analyzes target frequencies and frequencies for each band, and determines a failure of the target system based on the analyzed frequencies; a local server that selectively stores data and signals transmitted from the signal pre-processor, diagnoses a state of the target system based on the transmitted data and signals, and communicates with an external device.

Abstract: The present invention relates to a method for monitoring a signal having a multi-band frequency. The method for monitoring a signal having a multi-band frequency detected in a target to be monitored includes: dividing the multi-band frequency into at least two regions; setting update periods to be different from each other for each of the divided frequency bands; and displaying monitoring states of the divided frequency bands depending on the update periods set to be different from each other.

Abstract: A signal measuring/diagnosing system and method, and methods and systems in which the same are applied to individual devices, which are capable of measuring and diagnosing a target signal. A first exemplary embodiment of the present invention provides a signal measuring/diagnosing system that measures and diagnoses signals of a target system, including: an analog/digital converter that converts analog signals of the target system into digital signals and corrects the converted digital signals; a signal pre-processor that sets analysis target frequency bands so as to selectively store signals, analyzes target frequencies and frequencies for each band, and determines a failure of the target system based on the analyzed frequencies; a local server that selectively stores data and signals transmitted from the signal pre-processor, diagnoses a state of the target system based on the transmitted data and signals, and communicates with an external device.

Abstract: An earphone facilitating the tying and untying of an earphone wire comprises a speaker portion worn in both ears, a branch line portion having one side connected to the speaker portion, a joint part in which at least two branch lines are joined, a single line portion having one side connected to the joint part, a connection portion disposed at the other side of the single line portion to be connected to a terminal of a sound system, and a tying portion with which ties a folded earphone wire and having an elastic helical coil spring shape and a hollow tube shape. The tying portion also surrounds a part of outer surface of the single line portion and is capable of sliding along the single line portion.

Abstract: An earphone easily facilitating the tying and untying of an earphone wire comprising a speaker portion; a bifurcation portion; a stopper; a single line portion; a connection portion; and a tying portion installed on the other end of the single line portion for the tying and untying of an earphone wire without an additional fixing attachment and a wire attachment which is provided for an easy storage of the earphone wire in a pocket due to the reduced volume thereof, are disclosed. The earphone equipped with the wire attachment gives advantages such as a convenient tying and untying of the earphone wire for a user and an easy storage of the earphone in a pocket due to the reduced volume of the wire attachment.

Abstract: There is provided a hub bearing unit with multiple rows of rolling elements. A hub has one or more inner race surfaces. An inner ring is seated on an outer peripheral surface of the hub and has one or more inner race surfaces thereon. An outer ring is formed with outer race surfaces as many as inner race surfaces formed at the hub and the inner ring. Rolling elements are disposed between the outer race surfaces and the inner race surfaces. Cages are disposed to maintain circumferential intervals of the rolling elements. The outer ring is formed with three or more outer race surfaces. The rolling elements are arranged in three or more rows. The arrangement of multiple-row rolling elements enhances the life of the bearing. Manufacturing costs are curtailed and rolling resistance is reduced compared to the tapered roller bearing.

Abstract: An outer ring for a wheel bearing is provided. The outer ring is designed to attain optimal structural strength and thus prolong a service life of the bearing by establishing theory foundation for dimensions of a supporting end formed on an outer side of an outer diameter surface of the outer ring and a ring groove in which the snap ring is installed which is formed on an inner side of the outer diameter surface and applying optimal dimensions within an allowable threshold range to the supporting end and the ring groove. In addition, the outer ring is also designed to improve space usability of the outer ring by attaining an installing space of a seal member installed on the bearing through an extending end formed on an outer front end surface of the outer ring and improve an assembling property of a snap ring by making a portion of the outer ring from a ring groove to an inner front end as a step surface whose diameter is less than an overall diameter of the outer ring.

Abstract: There is provided a hub bearing unit with multiple rows of rolling elements. A hub has one or more inner race surfaces. An inner ring is seated on an outer peripheral surface of the hub and has one or more inner race surfaces thereon. An outer ring is formed with outer race surfaces as many as inner race surfaces formed at the hub and the inner ring. Rolling elements are disposed between the outer race surfaces and the inner race surfaces. Cages are disposed to maintain circumferential intervals of the rolling elements. The outer ring is formed with three or more outer race surfaces. The rolling elements are arranged in three or more rows. The arrangement of multiple-row rolling elements enhances the life of the bearing. Manufacturing costs are curtailed and rolling resistance is reduced compared to the tapered roller bearing.