FIELD: the invention refers to automobile electron instrument-making and may be directly used for measuring of a linear speed of an automobile.
SUBSTANCE: noncontact sensor of an automobile speed measuring an angular speed of a ferromagnetic toothed rotor with an increased air gap and an expanded diapason of measured frequencies(downwards till null) has a magneto sensitive element on the base of an ultra fine and highly sensitive differential integral scheme, a gigantic magneto resistor with a backward displacing constant magnet with diminished residue magnetization and a small geometry in which a constant magnet is located at the distance L=0-2,5 mm from the surface of the installation of the integral scheme of the gigantic magneto resistor.
EFFECT: allows to optimize the functional characteristics of the sensor of the automobile speed, contributes to receiving minimal geometric dimensions of the arrangement at its common simplicity and increased sensitiveness.
3 cl, 3 dwg
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