Title:
POSITION RECOGNITION SYSTEM FOR CARRIAGE
Document Type and Number:
Japanese Patent JP2002211709
Kind Code:
A
Abstract:
To monitor the light receiving level of a position recognition device 12, issue an alarm when the light receiving level is at a predetermined value or lower, and finding a position from a travel amount accumulated by an encoder 10 using an absolute position found before as a reference for continuous travel when the position recognizing device cannot detect the position to be recognized.
There is no case of impossible operation of a stacker crane due to sudden stop of position recognition with the position recognition device 12.
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Inventors:
MATSUMOTO TOMOHARU
Application Number:
JP2001004919A
Publication Date:
July 31, 2002
Filing Date:
January 12, 2001
Export Citation:
Assignee:
MURATA MACHINERY LTD
International Classes:
B65G1/00; B65G1/04; G01B11/00; G05D1/02; G01C15/00; (IPC1-7): B65G1/04; B65G1/00; G01B11/00; G01C15/00; G05D1/02
Attorney, Agent or Firm:
Akira Shioiri (1 person outside)
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