Title:
カードリーダ及び異物検知方法
Document Type and Number:
Japanese Patent JP7219557
Kind Code:
B2
Abstract:
A card reader may include a main body part including a card conveyance path; a shutter member structured to move between a closed position and an open position; a first capacitance sensor provided in the main body part; and a control unit. The control unit may be structured to calculate a first output difference between an output of the first capacitance sensor in a first state and an output of the first capacitance sensor in a second state; calculate a second output difference between a maximum output of the first capacitance sensor in a period from the first state to the second state and the output of the first capacitance sensor in the second state; and determine that an object is installed when the first output difference is greater than a predetermined first threshold and the second output difference is less than a predetermined second threshold.
Inventors:
Munemasa Momose
Application Number:
JP2018115617A
Publication Date:
February 08, 2023
Filing Date:
June 18, 2018
Export Citation:
Assignee:
Nidec Sankyo Co., Ltd.
International Classes:
G06K13/06
Domestic Patent References:
| JP2016110415A | ||||
| JP2017219971A |
Foreign References:
| US20170061167 |
Other References:
済川 信隆,操業管理におけるデータリコンシリエーションの活用,計装,日本,有限会社工業技術社,1999年12月01日,第42巻 第13号,pp. 32-35
Attorney, Agent or Firm:
Patent Attorney Corporation Koei Office