Title:
MAGNETIC FIELD MEASUREMENT DEVICE
Document Type and Number:
Japanese Patent JP2018040610
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a magnetic field measurement device which omits adjustment of relative positions of a first magnetic sensor, a second magnetic sensor and a magnetic field generation unit.SOLUTION: A magnetic field measurement device 100 according to the present invention includes: a magnetic sensor 11 and a magnetic sensor 12 arranged in a measurement direction; a magnetic field generation unit 130 for generating a magnetic field by a current; a first operation unit 105a for calculating a difference value between output from the magnetic sensor 11 and output from the magnetic sensor 12 when a magnetic field is generated with no magnetic field source M; and a second operation unit 105b for calculating a correction value for correcting the difference value between the output from the magnetic sensor 11 and the output from the magnetic sensor 12 when intensity of the magnetic field in the magnetic field source M is measured from a current value of the current and the difference value.SELECTED DRAWING: Figure 2
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Inventors:
DEGUCHI AKIHIRO
Application Number:
JP2016173388A
Publication Date:
March 15, 2018
Filing Date:
September 06, 2016
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
G01R33/032; A61B5/05; G01R33/025; G01R33/26
Attorney, Agent or Firm:
Kazuaki Watanabe
Keisuke Nishida
Satoshi Nakai
Keisuke Nishida
Satoshi Nakai