Meidensha Corporation

Otis Elevator Company

Railway Technical Research Institute

Makoto Niwakawa

Yusuke Watabe

Takashi Takeuchi

Hirotomo Tanaka

Mitsuru Kato

Takanori Hayashi

Ryuji Onoda

Daisuke Kobayashi

Itaru Matsumura

Takuro Kawabata

Seiji Tabayashi

Seiichi Ito

Tomio Syuttou

Makoto Yokoyama

Mitsuo Aboshi

Kazuyoshi Nezu

Nobuyuki Fujiwara

An elevator rope monitoring device, provided with: line sensor camerasfor imaging the entire circumference of the traveling elevator ropea speed/position detecting devicefor detecting the traveling speed and traveling position of the elevator ropean image recording partfor inputting the image acquired by the line sensor camerasin association with the traveling position of the elevator ropedetected by the speed/position detecting meansan image creating partfor creating an entire circumferential image of the elevator ropefrom the image imaged by the line sensor camerasand an image processing partfor detecting an abnormality in the elevator ropeby analyzing the entire circumferential image.

Elevator rope monitoring device and elevator rope monitoring method

A trolley wire wear measuring device includes a processor configured to obtain a pair of line sensor images in which luminance signals of scanning lines are arranged; a differential processor configured to perform a differential process to create a line sensor image; a binary operation processor configured to perform a binary operation process on the line sensor image obtained by the differential process to create a binary operated image in which a worn portion of the trolley wire is emphasized; an edge detector configured to detect edges of both sides of the worn portion in the binary operated image; and a worn portion width calculator configured to calculate a point-to-point distance of the both side edges as a whole width of the worn portion of the trolley wire in the binary operated image and determine a worn portion width of the trolley wire using this whole width.

Trolley wire wear measuring device using binary operated images

The present invention provides a trolley wire wear measurement device by image processing in which a line sensor is arranged vertically and upward on a roof of an inspection car so that the line sensor looks up to a trolley wire and a lighting means that illuminates the trolley wire is formed by arranging a plurality of point light sources in a straight line in a direction perpendicular to a travelling direction of the inspection car on the inspection car.

Device for measuring wear of trolley wire by image processing

Growing community of inventors

Numazu, Japan

Makoto Niwakawa