HALL EFFECT MEASURING DEVICE

摘要

The invention relates to a Hall effect measuring device located under an automobile bonnet, said device including: a housing (30); a Hall effect sensor (I) including a pierced magnet (10) and a chip (20) arranged at the zero Gauss point of said magnet (10); and a ferromagnetic target (50) including a measurement surface (51), wherein: the chip (20) is rigidly connected to the magnet (10) and defines a measurement plane (21); the sensor (1) and the ferromagnetic target (50) are movable relative to each other; the sensor (1) is positioned in said housing (30) and is adapted for measuring the value of the magnetic field (B) of the magnet (10) above the chip (20) and along a measurement axis (Z) perpendicular to the measuring plane (21), characterised in that: the sensor (1) is linear; the device has a reference position corresponding to the relative given position of the chip (20) and the target (50); the relative movement has two degrees of freedom, both respectively corresponding to a translation movement or a rotation movement; the device is adapted for detecting a deviation relative to the reference position; the shape and/or the size of the target (50) according to a relative movement is respectively different from the shape and/or size of the target (50) according to the other relative movement.