Title:
CURRENT SENSOR
Document Type and Number:
WIPO Patent Application WO/2019/205775
Kind Code:
A1
Abstract:
A current sensor, comprising: at least three magnetic sensor units (10a-10h) which are distributed surrounding the periphery of an area to be detected, the area to be detected being used for being penetrated with a wire to be detected (A); each magnetic sensor unit comprises: a first magnetic resistor (11a); and a second magnetic resistor (12a) which is in series connection with the first magnetic resistor (11a), two in series-connected terminals thereof being respectively connected to two terminals of a power supply, wherein the magnetic sensitive direction of the second magnetic resistor (12a) is opposite to the magnetic sensitive direction of the first magnetic resistor (11a); an output terminal (Vo) of each magnetic sensor unit is disposed between the first magnetic resistor (11a) and the second magnetic resistor (12a); and the output terminal (Vo) of each magnetic sensor unit is connected to the output terminal (Vo) of at least one of other magnetic sensor units. By means of the present current sensor, magnetic resistors in a plurality of magnetic sensor units are actually arranged in parallel connection, such that even if one magnetic sensor unit is broken, the remaining magnetic sensors may still work normally and output measurement results.
Inventors:
WANG JIANGUO (CN)
ZHU MIN (CN)
BAI JIANMIN (CN)
YU FANGYAN (CN)
ZHU MIN (CN)
BAI JIANMIN (CN)
YU FANGYAN (CN)
Application Number:
PCT/CN2019/075178
Publication Date:
October 31, 2019
Filing Date:
February 15, 2019
Export Citation:
Assignee:
NING BO SINOMAGS ELECTRONIC TECH CO LTD (CN)
International Classes:
G01R15/20
Domestic Patent References:
| WO2015107948A1 | 2015-07-23 |
Foreign References:
| CN208172078U | 2018-11-30 | |||
| CN108398588A | 2018-08-14 | |||
| CN103238079A | 2013-08-07 | |||
| CN105353192A | 2016-02-24 | |||
| CN102812367A | 2012-12-05 | |||
| CN102419393A | 2012-04-18 | |||
| US20110080165A1 | 2011-04-07 |
Attorney, Agent or Firm:
SUNSHINE INTELLECTUAL PROPERTY INTERNATIONAL CO., LTD. (CN)
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