Abstract: A rail breakage detection device includes a first core part provided to a first cable connecting an electrical neutral point of an impedance bond that electrically connects a first rail and a second rail to the first rail, a second core part provided to a second cable connecting the electrical neutral point of the impedance bond to the second rail, a first coil wound around the first core part to generate a first electromotive force in accordance with a current variation occurring in the first cable, a second coil connected electrically to the first coil and wound around the second core part to generate a second electromotive force in accordance with a current variation occurring in the second cable, and a CPU to determine that the first or second rail is broken based on an electromotive force that is a sum of the first and second electromotive forces.

Abstract: A train control apparatus includes a setting reception unit that receives setting information regarding a temporary speed limit section and a speed limit. A control unit generates temporary speed limit information for the trains. A communication unit transmits the temporary speed limit information to the trains. If information regarding all temporary speed limit sections cannot be included in the temporary speed limit information, the control unit includes, in the temporary speed limit information, information regarding a specified number of temporary speed limit sections located on a traveling direction side, and changes a speed limit in one or more temporary speed limit sections included in the temporary speed limit information on the basis of a speed limit set in a temporary speed limit section that is adjacent to a temporary speed limit section included in the temporary speed limit information, and is not included in the temporary speed limit information.

Abstract: A ground control device includes a control unit that determines a control mode of operation control on a train in a communication area of a radio communication apparatus, based on information on a communication level indicating a communication state between the train and the radio communication apparatus determined in a predetermined period, and performs train operation control according to the determined control mode on a train entering or approaching the communication area after the control mode is determined, and a storage unit that stores one or more pieces of the information on the communication level on one or more of the radio communication apparatuses.

Abstract: A ground control device includes: a location information acquiring unit to acquire location information indicating a train location from a train through a ground wireless device; an on-track information acquiring unit to acquire on-track information indicating whether or not the train is present on a track in a predetermined zone; and a control unit to set a protection zone for the train when the location information acquiring unit cannot acquire the location information, and to cancel a portion of the protection zone on the basis of the on-track information acquired by the on-track information acquiring unit when the train has run in an emergency driving mode.

Abstract: A train control apparatus includes a setting reception unit that receives setting information regarding a temporary speed limit section and a speed limit. A control unit generates temporary speed limit information for the trains. A communication unit transmits the temporary speed limit information to the trains. If information regarding all temporary speed limit sections cannot be included in the temporary speed limit information, the control unit includes, in the temporary speed limit information, information regarding a specified number of temporary speed limit sections located on a traveling direction side, and changes a speed limit in one or more temporary speed limit sections included in the temporary speed limit information on the basis of a speed limit set in a temporary speed limit section that is adjacent to a temporary speed limit section included in the temporary speed limit information, and is not included in the temporary speed limit information.

Abstract: A radio train control system controls the trains on tracks on which track circuits are built, and includes: ground radio devices performing radio communication with the trains and acquiring position information of the trains; field devices acquiring track circuit state information indicating whether the track circuit is ON or OFF; ground base devices receiving the position information and the track circuit state information and transmitting control information to the trains; and an on-track vehicle control device receiving the position information and the track circuit state information and managing on-track information. The ground radio devices and the field devices have transmission paths connected with the on-track vehicle control device without the ground base devices, and the on-track vehicle control device can transmit the control information to the trains through the transmission paths when the ground base device is out of order.

Abstract: A rail breakage detection device includes a first core part provided to a first cable connecting an electrical neutral point of an impedance bond that electrically connects a first rail and a second rail to the first rail, a second core part provided to a second cable connecting the electrical neutral point of the impedance bond to the second rail, a first coil wound around the first core part to generate a first electromotive force in accordance with a current variation occurring in the first cable, a second coil connected electrically to the first coil and wound around the second core part to generate a second electromotive force in accordance with a current variation occurring in the second cable, and a CPU to determine that the first or second rail is broken based on an electromotive force that is a sum of the first and second electromotive forces.

Abstract: A roll detector mounted on a train includes: a sensor that detects a movement of the train while the train is not in operation with an on-board controller being inactive, the on-board controller controlling an action of the train; and a roll sensor that determines whether or not the train has rolled on the basis of a result of the detection by the sensor, and performs train protection when determining that the train has rolled.

Abstract: A train presence detection apparatus includes an information acquisition unit to acquire position information on a first end point and a second end point located in a first line section formed in a loop and virtual block presence/absence information indicating whether a virtual block indicating a specific position in the first line section is included in a designated section that is any of a first section and a second section in which the first end point and the second end point are located at both ends; a designated section determination unit to determine which of the first section and the second section is the designated section based on the position information on the first end point and the second end point and the virtual block presence/absence information; and a presence determination unit to determine whether a train is present in the designated section.

Abstract: A train presence detection apparatus includes an information acquisition unit to acquire position information on a first end point and a second end point located in a first line section formed in a loop and virtual block presence/absence information indicating whether a virtual block indicating a specific position in the first line section is included in a designated section that is any of a first section and a second section in which the first end point and the second end point are located at both ends; a designated section determination unit to determine which of the first section and the second section is the designated section based on the position information on the first end point and the second end point and the virtual block presence/absence information; and a presence determination unit to determine whether a train is present in the designated section.

Abstract: A radio train control system controls the trains on tracks on which track circuits are built, and includes: ground radio devices performing radio communication with the trains and acquiring position information of the trains; field devices acquiring track circuit state information indicating whether the track circuit is ON or OFF; ground base devices receiving the position information and the track circuit state information and transmitting control information to the trains; and an on-track vehicle control device receiving the position information and the track circuit state information and managing on-track information. The ground radio devices and the field devices have transmission paths connected with the on-track vehicle control device without the ground base devices, and the on-track vehicle control device can transmit the control information to the trains through the transmission paths when the ground base device is out of order.

Abstract: The method of forming a three-dimensional pattern, wherein a pattern forming mold formed from an expanded polyethylene is attached to the work surface where a desired pattern is to be formed, a surfacing material of a specific acrylic resin concrete is cast onto the work surface, the surfacing material is allowed to harden, and the mold is detached and removed from the work surface.