| 摘要 |
A push-pull X-axis magnetoresistive sensor, comprising: a substrate (6), staggered soft magnetic flux concentrator arrays (1, 2) and a push-pull magnetoresistive sensing unit bridge being arranged on the substrate (6), and also comprising calibration coils (40, 50) and/or reset coils, any one of the soft magnetic flux concentrators forming a staggered structure with at least one soft magnetic flux concentrator, and respectively forming alternate staggered and non-staggered gaps along the X direction, push-pull magnetoresistive sensing unit strings (7, 8, 81, 71, 72) respectively being positioned at the staggered and non-staggered gaps, and being electrically connected to form the push-pull magnetoresistive sensing unit bridge, the magnetoresistive sensing unit having an X magnetic field sensitivity direction, the calibration coils (40, 50) and the reset coils respectively comprising push/pull calibration direct leads (41, 42, 51, 52, 110, 111) and reset direct leads (400, 411, 611) parallel and perpendicular to the push and pull magnetoresistive sensing unit strings (7, 8, 81, 71, 72). The present push-pull magnetoresistive sensor has the advantages of a simple structure, far higher magnetic field sensitivity than a reference bridge X magnetoresistive sensing unit, and low power consumption. |
