VARIABLE MAGNETIC FIELD SENSOR Russian patent published in 2015 - IPC G01R33/09 

FIELD: measurement equipment.

SUBSTANCE: sensor includes a magnetosensitive sensor, the control conductor of which is connected with its ends to an external conductor so that a closed circuit is formed. The closed circuit formed with the control conductor and the external conductor connected to it is earthed on the middle of length of the external conductor. In the magnetosensitive sensor, the magnetosensitive element and the control conductor are separated with an insulating layer. The magnetosensitive sensor is arranged inside a cover from magnetically soft material with insulation by a dielectric layer from it. Inside the closed circuit there can be arranged a ferromagnetic concentrator with a multiturn coil wound on it, which is connected with its ends to the realigned capacitor.

EFFECT: providing stable measurement of a magnetic field at movement of the sensor itself in low-frequency and constant magnetic fields of the Earth, surrounding magnetised objects and electromagnetic instruments, improvement of interference immunity of the sensor, including against electrical pulse interference.

7 cl, 2 dwg