Title:
METHOD OF OPTICALLY MEASURING SIZE OF DISCOID BODY
Document Type and Number:
Japanese Patent JPS59182303
Kind Code:
A
Abstract:
The coin rolls on a track of triangular section with a vertical side and an oblique side, in which it penetrates as a function of its thickness. The difference in time between the beginnings (or ends) of occultation of the upper cells determines the mean speed and from the duration of this occultation is deduced the length of the chord (PQ) at the upper level (Y-Y'). Knowing the mean speed, the cell of the second level (Z-Z') makes it possible to determine the corresponding chord (RS). From (PQ) and (RS) are deduced the heights (h1, h2) above the plane of roll (X-X') and the diameter and thickness of the coin may then be calculated. More simply, (PQ) and (RS) may be compared electronically with recorded values to reject the coin or accept it and possibly record its value.
Inventors:
KURISUCHIYAN SERIE
Application Number:
JP700484A
Publication Date:
October 17, 1984
Filing Date:
January 17, 1984
Export Citation:
Assignee:
MECELEC SA
International Classes:
G01B11/06; G01B11/08; G01B11/10; G07D5/02; H01J40/14; H01L23/04; G07D; (IPC1-7): G01B11/06; G01B11/08
Attorney, Agent or Firm:
Shigeki Kawase