Title:
【発明の名称】鉄道レールに沿って移動する部材の横断方向の位置決め方法および装置
Document Type and Number:
Japanese Patent JP2844541
Kind Code:
B2
Abstract:
Two beams of ultrasonic rays are emitted through the head of the rail, which beams are substantially perpendicular to the fishing surfaces of this rail. The echoes of these beams reflected by the fishing surfaces are detected. A control signal is formed, which is a function of the time difference between the emission and the reception of its echo for each one of the two ultrasonic beams, and this control signal is used to produce a signal to command the transverse positioning of the said component.
Inventors:
ROMORO PANETSUTEI
Application Number:
JP32619189A
Publication Date:
January 06, 1999
Filing Date:
December 18, 1989
Export Citation:
Assignee:
SUPENO INTERN SA
International Classes:
G01N29/04; G01N29/07; E01B35/00; G01N29/22; (IPC1-7): G01N29/10; E01B35/00
Attorney, Agent or Firm:
Kiyotaka Sasaki (3 outside)