Hitachi, Ltd.

Ansaldo Sts S.p.a.

Noriharu Amiya

Dai Watanabe

Kenji Oguma

Hiroko Sukeda

Yuuichi Satou

Hiroshi Taoka

Hiroaki Koiwa

Hiroshi Okatani

Rieko Ootsuka

Kouichirou Kurokawa

Alfredo Drago

A left object detection device for detecting an object left behind in a monitoring target area includes an acquisition section which acquires an image of the area from an image pickup device for picking up an image of the monitoring target area, a processing section, and an output section which outputs in accordance with a result of the processing section. Upon detection of the object which has been kept static for a given time period as an article from the image acquired by the acquisition section, the processing section starts a timer for counting time from detection of the article, determines whether or not a person who owned the article matches a person in the image acquired by the acquisition section, stops the timer upon determination that they match, and does not stop the timer upon determination that they do not match. The processing section determines whether or not the timer counts in excess of a predetermined time period. Upon determination made by the processing section that the timer counts in excess of the predetermined time period, the output section outputs an existence of the left object.

Left object detection device and left object detection method

In the state that a train moves from a track circuitT toward a track circuitT, and a train detection signal TDis supplied from the boundary between the track circuitsT andT to the track circuitsT andT, and the train detection signal TDis received by the train, if the signal intensity is suddenly reduced greatly immediately after the axle of the train passes the boundary between the track circuitsT andT, it can be decided that the train passes the boundary between the track circuitsT andT. Therefore, if absolute position information of the track circuitT is preserved beforehand in the train, the movement distance calculated from pulse output of a speed generator is corrected (replaced) in the absolute position information of the track circuitT, and hereafter is updated by the pulse output, thus the position of the own train can be easily detected as a movement distance.

Method for train positioning

In an automatic train stop system in which a track circuitis divided into track circuit sectionsT,T andT, and a digitized train control information telegram (ATS telegram)is transmitted through the track circuit sections on carriers having different frequencies, a carrier sensormounted on a trainreceives a carrier in the track circuitand detects a track circuit boundaryby detecting a level change of the carrier, whereby an onboard system grasps the position thereof and controls the trainbased on the information of the ATS telegram

Automatic train stop system

Growing community of inventors

Chiyoda-ku, Japan

Noriharu Amiya