Title:
電流センサ、電流測定モジュール及びスマートメータ
Document Type and Number:
Japanese Patent JP6629413
Kind Code:
B2
Abstract:
To provide a current sensor, a current measurement module, and a smart meter capable of enabling high accuracy measurement over a wide measuring range with low power consumption.SOLUTION: A current sensor comprises: a plurality of magneto-resistive elements; and a first magnetic body. Resistance values of the plurality of magneto-resistive elements change by applying an induction field to each of the plurality of magneto-resistive elements from measuring target current. The first magnetic body applies a first offset magnetic field to a first magneto-resistive element among the plurality of magneto-resistive elements generally in parallel to the induction field. Furthermore, a smart meter according to one embodiment of the present invention mounts therein, for example, the current sensor according to the present embodiment.SELECTED DRAWING: Figure 1
Inventors:
Yoshihiko Fuji
Hideaki Fukuzawa
Yoshihiro Higashi
Tetsuro Wamura
Motomichi Shibano
Hideaki Fukuzawa
Yoshihiro Higashi
Tetsuro Wamura
Motomichi Shibano
Application Number:
JP2018200631A
Publication Date:
January 15, 2020
Filing Date:
October 25, 2018
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G01R15/20; G01R19/00; G01R22/06; G01R33/09; H01L29/82; H01L43/08
Domestic Patent References:
| JP2010197399A | ||||
| JP2006214855A | ||||
| JP2010107460A | ||||
| JP2004132790A | ||||
| JP2011185772A | ||||
| JP2007078417A | ||||
| JP2002350470A | ||||
| JP2013113799A |
Foreign References:
| WO2012053296A1 | ||||
| WO2012070337A1 | ||||
| US20120306487 | ||||
| US8125214 |
Attorney, Agent or Firm:
Kisaragi International Patent Business Corporation