Abstract: A Hall effect measuring device under the hood of a motor vehicle includes a housing, a Hall effect sensor including a holed magnet and a chip arranged at the Gaussian zero point of the magnet, and a ferromagnetic target including a measurement surface in which the chip is securely attached to the magnet, and defines a measurement plane. The sensor and the ferromagnetic target are arranged to be imparted with a relative motion with respect to one another, the sensor being positioned in the housing and configured to measure the value of the magnetic field of the magnet, vertically in line with the chip, on a measurement axis perpendicular to the measurement plane based on relative translational motion and on relative rotational motion.

Abstract: A Hall effect measuring device under the hood of a motor vehicle, includes: a housing, a Hall effect sensor, including a holed magnet and a chip arranged at the Gaussian zero point of the magnet, and a ferromagnetic target including a measurement surface, in which the chip is securely attached to the magnet, and defines a measurement plane, the sensor and the ferromagnetic target are able to be imparted with a relative motion with respect to one another, the sensor is positioned in the housing and configured to measure the value of the magnetic field of the magnet, vertically in line with the chip, on a measurement axis perpendicular to the measurement plane, wherein the sensor is linear, the device includes a reference position corresponding to a given relative position of the chip and the target, the relative motion is with two degrees of freedom, each of which respectively corresponds to a translational motion or to a rotational motion, the device is configured to detect a deviation from the referen

Abstract: A position measuring device using the Hall effect, includes: a box (30); and a Hall-effect sensor (1), including a cylindrical magnet (10) and a chip (20), in which device: the chip (20) is fastened to the magnet (10); the magnet (10) has a hole (11) right through it, along an axis perpendicular to its bases, and has an outer perimeter (12) and an inner perimeter (13); and the sensor (1) is positioned in the box (30). The device is noteworthy in that: the inner perimeter (13) is maximized in relation to the mechanical constraints of the magnet (10); and the area of the hole (11) is equal to or greater than the area of the chip (20), so as to obviate the presence of iron filings facing the chip (20).