Abstract: An obstacle detection device includes: a sensor unit including a camera, a laser distance measuring device, and an optical element, and setting optical axes of the camera and the laser distance measuring device to an optical axis in the same direction using the optical element; a monitoring area control unit calculating a monitoring area to be monitored by the sensor unit using a position of a train, map information indicating a position of a track of the train, and an attitude angle of the train, and performing control to cause a direction of the optical axis of the sensor unit to be on a course of the train using a drive mirror; and an obstacle determination unit detecting an obstacle on the course of the train based on monitoring results of the camera and the laser distance measuring device, and determining whether a collision avoidance action is necessary.

Abstract: A forward monitoring apparatus is installed on a train, and includes: a monitoring unit that monitors a situation ahead of the train; a storage unit that stores map information including information on a position of a track, a shape of the track, and a position of a turnout provided on the track; a train position acquisition unit that acquires train position information indicating a position of the train; a route information acquisition unit that acquires open route information including information for indicating an open direction of the turnout located ahead of the train; and a monitoring direction determination unit that determines a direction to be monitored by the monitoring unit, by using the open route information acquired, the train position information acquired, and the map information being stored in the storage unit.

Abstract: A terminal device includes a signal reception unit that receives signals transmitted from a plurality of transmission devices, and analyzes the contents of data contained in the signals; and a control unit that performs control to select one transmission device from the plurality of transmission devices that have transmitted signals containing identical data, and causes the signal reception unit to continuously receive a signal being transmitted from the selected transmission device when the number of received signals containing identical data is equal to or larger than a prescribed number.

Abstract: A terminal device includes a signal reception unit that receives signals transmitted from a plurality of transmission devices, and analyzes the contents of data contained in the signals; and a control unit that performs control to select one transmission device from the plurality of transmission devices that have transmitted signals containing identical data, and causes the signal reception unit to continuously receive a signal being transmitted from the selected transmission device when the number of received signals containing identical data is equal to or larger than a prescribed number.

Abstract: In a wireless information distribution apparatus, a transmission unit transmits radio waves for distributing information. An adjustment unit acquires first data indicating a degree in which a person is present around the wireless information distribution apparatus. Moreover, the adjustment unit acquires second data serving as an index of a possibility that another apparatus that distributes information by radio waves is present around the wireless information distribution apparatus. The adjustment unit adjusts, based on the first data and the second data, the intensity of the radio waves to be transmitted by the transmission unit.

Abstract: In a wireless information distribution apparatus, a transmission unit transmits radio waves for distributing information. An adjustment unit acquires first data indicating a degree in which a person is present around the wireless information distribution apparatus. Moreover, the adjustment unit acquires second data serving as an index of a possibility that another apparatus that distributes information by radio waves is present around the wireless information distribution apparatus. The adjustment unit adjusts, based on the first data and the second data, the intensity of the radio waves to be transmitted by the transmission unit.