Mitsubishi Electric Corporation

Mitsubishi Electric Research Laboratories, Inc.

Nihon Parkerizing Co., Ltd.

Atsushi Takami

Masashi Asuka

Yusaku Nagasaki

Hideo Nakata

Katsunori Tsuchida

Daisuke Tateishi

Shota Shimayoshi

Maho Fujihara

Kenji Ueda

Kenzo Makino

Satoru Takahashi

Bingnan Wang

Wataru Tsujita

Koki Yoshimoto

Masashi Hagiwara

Tomohiro Onishi

Hidekazu Fukushi

Shuichi Takagi

Shiho Adachi

Keisuke Sugihara

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.

Ground control device, radio communication apparatus, radio train control system, and train control method

A test support method includes a step of obtaining a pre-change image and a post-change image to be displayed on a monitoring and control system, a step of extracting, from the post-change image, multiple symbols that have changed from corresponding symbols in the pre-change image, a step of adding order information to the multiple symbols extracted, and a step of outputting a test image in which the order information is added to the multiple symbols.

Test support method, test support device, and storage medium

A railroad system includes a plurality of trains and an operation management device. The operation management device manages operation of a subject train that is at least one of the plurality of trains. The operation management device includes a calculation unit and a communication unit. The calculation unit calculates a target arrival time at which the subject train is to arrive at a next station, upon occurrence of an arrival delay of a preceding train at the next station, the preceding train being a train among the plurality of trains and running ahead of the subject train; and, upon arrival of the preceding train at the next station, calculates a target arrival time at which the subject train is to arrive at the next station. The communication unit transmits, to the subject train, information on the target arrival time calculated by the calculation unit.

Railroad system, operation management device, operation management method, and non-transitory storage medium to store operation management program

Provided are a novel chemical conversion treatment agent which is capable of forming, on/over the surface of a metal material, a chemical conversion coating which is superior in corrosion resistance, a method for producing a chemical conversion coating on/over the surface of a metal material with the use of the chemical conversion treatment agent, a metal material having a coating, and a painted metal material. The problem mentioned above can be solved by the chemical conversion treatment agent for forming a coating on/over the surface of a metal material, which characterized by containing: an ion containging at least one metal selected from the group consisting of titanium, zirconium and hafnium; a fluorine ion; at least one selected from the group consisting of an alkanesulfonic acid, an alkanolsulfonic acid, and ions thereof; and an ion containing trivalent iron.

Chemical conversion treatment agent, method for producing chemical conversion coating, metal material having chemical conversion coating, and painted metal material

A course control device includes: an information acquisition unit to acquire information via any of wireless devices arranged along a track from a first station to a second station; and a course control unit to control the course of a course control target train based on the information acquired by the information acquisition unit. The course control unit prevents the course control target train from proceeding to the course in at least one of a case where at least one of the wireless devices is in a failure state, a case where an on-board device that is mounted in a preceding train preceding the course control target train on the track and controls the preceding train based on information acquired via the wireless devices is in a failure state, and a case where the preceding train is in a stationary state between the first station and the second station.

Course control device, wireless train control system, on-board device, course control method, and recording medium

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.

Radio train control system and radio train control method

A wireless train control system includes: a device that generates a track circuit state signal indicating whether a track circuit is picked up or dropped and a time-triggered track circuit state signal indicating a drop at a timing delayed by a set time after the track circuit state signal indicates that the track circuit is dropped; and a controller that generates a stop limit point of a wireless-control-compliant train by using presence information if a preceding train is a wireless-control-compliant train, and generates the stop limit point by using the track circuit state signal and the time-triggered track circuit state signal if the preceding train is a non-wireless-control-compliant train. The controller does not update the stop limit point if the track circuit state signal indicates that the track circuit is dropped while the time-triggered track circuit state signal indicates that the track circuit is picked up.

Wireless train control system, ground control device, and wireless train control method

A rail state monitoring apparatus () includes: first and second transmission antennas () to transmit first and second electric signals to rails (), respectively; first reception antenna () to receive a surface wave () of the first electric signal propagated through rail () and guided wave () of the second electric signal propagated through loop coil (); second reception antenna () to receive surface wave () of the second electric signal propagated through rail () and guided wave () of the first electric signal propagated through loop coil (); and a processor. The processor obtains received powers of the respective electric signals received by first and second reception antennas (), determines a rail state from 'good', 'rail broken', &#x201c;rail crack&#x201d;, or &#x201c;rail surface anomaly&#x201d; based on the received powers, and outputs the rail state as rail state information.

Rail state monitoring apparatus

To provide a wireless train control system that can perform a stable operation. The wireless train control system controls a wireless-control compliant train following a wireless-control noncompliant train by a ground control device. A stop limit point of the wireless-control compliant train is set by a track circuit in which a tail end position of the wireless-control noncompliant train is present. By using a track-circuit state signal indicating that the track circuit is turned on or turned off and a time-element-added track-circuit state signal indicating turn-off at a timing delayed by a set time after the track-circuit state signal has indicated turn-off, when the track-circuit state signal indicates turn-off and the time-element-added track-circuit state signal indicates turn-on, it is determined that turn-off indicated by the track-circuit state signal is caused by the wireless-control compliant train that is a train itself being present, and the stop limit point is not updated.

Ground control device and wireless train control system

A train control device includes an on-vehicle base station mounted on a train, base stations that can communicate with the on-vehicle base station, an on-vehicle control device controlling an operation such that the train can stop before reaching a stop limit before which the train can run safely, and ground control devices that transmit, to the train side, the stop limit calculated based on information on the current position acquired from the train side via the base stations and opening information on a turnout on the ground. The on-vehicle control device calculates a channel-reservation start pattern, which is a pattern determining a reservation start position of a communication channel of a base station as a switching target when the base station as a communication partner to the on-vehicle base station is switched and in which the reservation start position is different according to train speed and train position.

Train control device

In accordance with a predetermined segment definition rule based on a point-switch protection section, a point switch control direction, and a train advancing direction, a plurality of segments are defined in advance with respect to a railway network. Segment competition information in which a competitive relationship between the plurality of segments is set in advance is prepared. A segment use permission setting part determines whether or not a competition for a use-requested segment in terms of a train operation occurs between the plurality of trains, by using segment competition information and segment use permission status information. A use-requested segment for which it is determined that no competition occurs is incorporated, as a use permission segment, into use permission segment information of the corresponding train. In accordance with a result of the competition determination, the segment use permission status information is updated.

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Tokyo, Japan

Atsushi Takami