Current sensor

Abstract

The embodiments of the present invention disclose a current sensor. The current sensor comprises a current conductor to be measured which comprises a first conductor section and a second conductor section with identical shapes. An area enclosed by the extended shape of the first conductor section and the second conductor section is a U shape, and the two conductor sections are symmetrically distributed about a geometric center line of the current conductor to be measured. A first magnetic sensor group is arranged at one or two sides of the first conductor section. A second magnetic sensor group is also arranged at one or two sides of the first conductor section. These two magnetic sensor groups are symmetrically distributed about the geometric center line of the current conductor to be measured and have the same sensing directions. All sides are enclosed by a shielding cover, and the shielding cover is placed in a housing made of insulating material that wraps the current conductor to be measured, the first magnetic sensor group, the second magnetic sensor group, and a signal processor and a circuit board. The current sensor provided by the embodiments of the present invention is small in size, has strong interference immunity, wide measurement range, low temperature drift, high frequency response, and high measurement precision.