Title:
CURRENT SENSOR
Document Type and Number:
WIPO Patent Application WO/2018/021082
Kind Code:
A1
Abstract:
A current sensor 100 is provided with: a bus bar 20; a bias magnet 13 which generates a bias magnetic field in a direction perpendicular to a current magnetic field produced as a result of a current to be detected flowing through the bus bar 20; a sensor chip 11 which outputs a signal corresponding to an angle θ between the bias magnetic field and a resultant magnetic field; and a signal circuit into which the signal from the sensor chip 11 is input, and which calculates a tangent value at the angle θ obtained using the input signal, and outputs a sensor signal corresponding to the tangent value. A first slit 21 and a second slit 22 are formed in the bus bar 20 in the direction of flow of the current to be detected. Further, the sensor chip 11 is disposed in an area of the bus bar 20 sandwiched between the first slit 21 and the second slit 22, and on a centerline CL in the direction of flow of the current to be detected.
Inventors:
ESAKA TAKUMA (JP)
NOMURA KOHSUKE (JP)
SAKAI RYOSUKE (JP)
SUGITO TATSUAKI (JP)
NOMURA KOHSUKE (JP)
SAKAI RYOSUKE (JP)
SUGITO TATSUAKI (JP)
Application Number:
PCT/JP2017/025869
Publication Date:
February 01, 2018
Filing Date:
July 18, 2017
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
G01R15/20
Domestic Patent References:
| WO2013038867A1 | 2013-03-21 |
Foreign References:
| JP2016070904A | 2016-05-09 | |||
| JP2014181981A | 2014-09-29 | |||
| JPH02210887A | 1990-08-22 | |||
| JP2007067778A | 2007-03-15 | |||
| JP2012220469A | 2012-11-12 | |||
| JP2015135267A | 2015-07-27 | |||
| US20120112365A1 | 2012-05-10 |
Attorney, Agent or Firm:
JIN Shunji (JP)
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