Title:
CHIP TYPE COIL-BASED FLUXGATE CURRENT SENSOR
Document Type and Number:
WIPO Patent Application WO/2022/036776
Kind Code:
A1
Abstract:
A chip type coil-based fluxgate current sensor, comprising: a magnetism gathering iron core, a chip type coil, an integral filtering module, a signal driving module, a voltage acquisition module, and a signal amplification module which are connected in sequence. The chip type coil comprises a first high-resistance silicon wafer and a second high-resistance silicon wafer which are bonded with each other; a built-in cavity is formed between involution surfaces of the first high-resistance silicon wafer and the second high-resistance silicon wafer, and multiple solenoid cavities filled with coil materials are provided around the periphery of the cavity; a cavity opening is formed at one end after involution of the first high-resistance silicon wafer and the second high-resistance silicon wafer. The magnetism gathering iron core is inserted into the cavity of the chip type coil by means of the cavity opening. The present current sensor is small in size and stable in signal.
Inventors:
HOU XIAOWEI (CN)
LV YANG (CN)
ZHENG LIANGGUANG (CN)
ZHU SHENGPING (CN)
ZHANG PO (CN)
WU PENG (CN)
LV YANG (CN)
ZHENG LIANGGUANG (CN)
ZHU SHENGPING (CN)
ZHANG PO (CN)
WU PENG (CN)
Application Number:
PCT/CN2020/114833
Publication Date:
February 24, 2022
Filing Date:
September 11, 2020
Export Citation:
Assignee:
NINGBO CRRC TIMES TRANSDUCER TECH CO LTD (CN)
International Classes:
G01R19/00; G01R33/00; G01R33/04
Foreign References:
| CN104808042A | 2015-07-29 | |||
| CN205958729U | 2017-02-15 | |||
| CN110988430A | 2020-04-10 | |||
| CN107367288A | 2017-11-21 | |||
| CN205941858U | 2017-02-08 | |||
| CN109507474A | 2019-03-22 | |||
| CN101907690A | 2010-12-08 | |||
| CN106291405A | 2017-01-04 | |||
| CN101410723A | 2009-04-15 | |||
| JP2010145147A | 2010-07-01 |
Attorney, Agent or Firm:
NINGBO YINZHOU SHENGFEI PATENT ATTORNEY (SPECIAL GENERAL PARTNERSHIP) (CN)
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