Title:
磁気計測システム、及び磁気センサの校正方法
Document Type and Number:
Japanese Patent JP7213622
Kind Code:
B2
Abstract:
A marker detection device which detects a magnetic marker laid in a road by using a sensor unit (11) in which a plurality of combinations of a magnetic sensor (Sn) and a magnetic-field generation coil (Cn) are arranged includes a storage part (112) which stores characteristic information of each magnetic-field generation coil (Cn), an estimation part (112) which estimates a magnetic differential value A acting on the magnetic sensor (Sn) due to a current differential value A acting on the magnetic-field generation coil (Cn) by referring to the characteristic information of each magnetic-field generation coil (Cn), and a calibration part (112) which calibrates each magnetic sensor (Sn) so as to enhance uniformity in sensitivity, which is a ratio between an output differential value A of the magnetic sensor (Sn) in accordance with a change of a current by the current differential value A acting on the magnetic-field generation coil (Cn) and the estimated magnetic differential value A.
Inventors:
Yamamoto Michiharu
Tomohiko Nagao
Aoyama Hitoshi
Tomohiko Nagao
Aoyama Hitoshi
Application Number:
JP2018077184A
Publication Date:
January 27, 2023
Filing Date:
April 12, 2018
Export Citation:
Assignee:
Aichi Steel Co., Ltd.
International Classes:
G01R33/02; G01R35/00
Domestic Patent References:
| JP2016194531A | ||||
| JP3130804A | ||||
| JP2000193728A | ||||
| JP2000227998A | ||||
| JP2002243815A | ||||
| JP2009192510A | ||||
| JP1152036A |
Attorney, Agent or Firm:
Tatsuya Oike
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