US 12,172,686 B2
Forward monitoring device and forward monitoring method
Masashi Tomida, Tokyo (JP); Yukitoshi Inaba, Tokyo (JP); Koki Yoshimoto, Tokyo (JP); and Emiko Kurata, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Tokyo (JP)
Appl. No. 18/003,222
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Jul. 1, 2020, PCT No. PCT/JP2020/025879
§ 371(c)(1), (2) Date Dec. 23, 2022,
PCT Pub. No. WO2022/003873, PCT Pub. Date Jan. 6, 2022.
Prior Publication US 2023/0249724 A1, Aug. 10, 2023
Int. Cl. B61L 23/34 (2006.01)
CPC B61L 23/34 (2013.01) 18 Claims
OG exemplary drawing
 
1. A forward monitoring device to be installed on a train, the forward monitoring device comprising:
a storage unit to store map information and brake performance information, the map information representing location information and a track geometry of a track on which the train is to run, the brake performance information representing performance of a brake system installed on the train;
a train information acquisition unit to acquire train location information and train speed information of the train;
a monitoring unit to monitor an upside of the track in a travel direction of the train;
an obstacle determination unit to determine presence or absence of an obstacle on the track based on a monitoring result of the monitoring unit;
a braking distance calculation unit to calculate a braking distance of the train using the map information, the brake performance information, the train location information, the train speed information, and a processing time from when the monitoring unit performs monitoring until the obstacle determination unit determines presence or absence of an obstacle; and
a monitoring distance determination unit to determine a monitoring distance based on the braking distance to set a monitoring range of the monitoring unit.