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Title:
METHOD OF ADJUSTING LIGHT REFLECTION SENSOR IN DEVICE FOR DETECTING PASSAGE OF OBJECT
Document Type and Number:
Japanese Patent JP2001050710
Kind Code:
A
Abstract:

To provide a device for detecting the passage of an object, capable of inexpensively realizing the detection of the passage of the object with high reliability.

In an adjustment method of a light reflection sensor in a device for detecting the passage of an object to be detected such as coin by using the light reflection sensor, a first detection output level V1 of a light receiving amount by a light receiving element in a state that the object to be detected is detected, and a second detection output level V2 of a light receiving amount by the light receiving element in a state that the object to be detected is not detected, are measured while varying a light emitting amount from a light emitting element of the optical sensor, to determine the difference V1-V2 between the first detection output level and the second detection output level, and the light emitting amount of the maximum difference V1-V2 is used as an adjustment value.


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Inventors:
IGARASHI TSUTOMU
Application Number:
JP1999000228018
Publication Date:
February 23, 2001
Filing Date:
August 11, 1999
Export Citation:
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Assignee:
TOYO COMMUNICATION EQUIP
International Classes:
G01B11/00; G01J1/02; G01S17/02; G01V8/20; (IPC1-7): G01B11/00; G01J1/02; G01S17/02
Attorney, Agent or Firm:
鈴木 均



 
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