Abstract: A measuring method of contactless magnetic detection of relative movement along a trajectory between a main creation system and a measuring system sensitive to the direction of the magnetic field, the creation system creating a main magnetic field of direction that varies in a plane detected by the measuring system to determine the relative position along that trajectory. The method includes subjecting the measuring system to a compensation magnetic field of direction that is fixed and opposite to the direction of the maximum main magnetic field measured by the measuring system and delivered uniquely by the main creation system and in determining the direction of a magnetic field resulting from the combination of the main magnetic field and the compensation magnetic field by measuring the two mutually-orthogonal components of the resultant magnetic field respectively varying substantially as cosine and sine functions of the angle of the resultant magnetic field.

Abstract: An electrical connection system for a vehicle, comprising an elongated dielectric component (3) equipped with at least one electrode electrically connected to electrical contact pads (7), two dielectric half-shells (14) assembled face-to-face, electrical contact fingers (19) connecting with the pads, interposed between at least one half-shell and the component, a spring collar (21) surrounding the half-shells (14) to provide for holding them in position. The half-shells (14) include at the proximal part a pivot (23) such that the half-shells open angularly relative to one another, the half-shells (14) together include on the outside a bearing surface for a tubular body providing for bringing the half-shells together.

Abstract: A method for diagnosing a lead-acid battery of an automotive vehicle includes an experimentation phase in which parameterization of the state of health (SOH) of a lead-acid battery for different values of the state of charge (SOC) of the battery is conducted, and a diagnosis phase in which the battery temperature during the start-up phase of the vehicle is measured and, after the first discharge and over a given range of current variation, the corresponding voltage (U) and current (I) is measured, to deduce therefrom after processing, a value of parameter (?) of the battery. The state of charge (SOC) of the battery is then determined, and the value representing the state of health is determined, so as to establish a diagnosis of the battery.

Abstract: A device for detecting the position of a mobile target equipped with at least one pattern and mounted so as to define a magnetic gap in which are placed at least two probes which are sensitive to the intensity of a physical magnitude where, for each passage of a pattern in front of a probe, the movement of the target causes a variation in the intensity of the physical magnitude detected by the probe.

Abstract: The invention concerns a device to mechanically secure in position a magnetic linear position sensor that includes a support (4) equipped with detection cells that are sensitive to magnetic induction and a target slide (5) fitted with magnetic elements and mounted to slide on the support in relation to the detection cells. According to the invention, the device includes: mechanical locking resources (12) between the target slide and the support, in order to place the target slide in a reference position in relation to the support, and resources (13) for controlling the locking resources so that the latter can pass from a locked position to an unlocked position of the target slide (5) in relation to the support (4), and vice versa.

Abstract: According to the invention, the position sensor is characterized in that the correction means (3) are achieved by at least one saturated magnetic pole, a so-called stabilization pole (Ps), having a sign opposite to the sign of the irregular pole (Pi) which is also saturated, each stabilization pole (Ps) extending from one to the other edge of the magnetic ring, by being inserted in the irregular pole, so as to stabilize the magnetic signal delivered by the passage of the poles adjacent to the irregular pole, said magnetic signal delivered between the passage of the adjacent poles not passing through the zero value.

Abstract: A position sensor includes at least two detection cells which are separated according to the direction of relative displacement between a generator element and cells of a given value such that a cell detects at least one first magnetic transition of the generator element in order to obtain a logic signal with at least one commutation front corresponding to the determined position of a first variation front. The other cell detects at least a second magnetic transition of the generator element in order to obtain a logical signal with at least one commutation front corresponding to the determined position of the second variation front. Treatment means combine electric signals of the detection cells in order to obtain an electric logic signal corresponding to an electric reference signal.

Abstract: The object of the invention relates to an encoder for a position sensor, including at least one junction (J) between one so-called small pole (P) and one so-called large pole (G), having an angular width larger than the angular width of the small pole, the small pole (P) and the large pole (G) corresponding to each junction (J) having polarities of opposite signs, characterized in that, for each junction (J), the large pole (G) of a given sign consists: of at least one small stabilizing pole (ps) of the same sign placed adjacent to the small pole (P) of opposite sign and having an angular width substantially identical with that of said first pole, one the one hand and of at least one complementary pole (pc) of the same sign as the stabilizing pole (ps), the complementary pole (pc) and/or the small stabilizing pole (ps) having a gradual magnetization profile adapted for stabilizing the passing through zero gauss of the radial component of the magnetic induction, on the other hand.

Abstract: A device to correct interference errors in a measuring installation (A) that includes at least two magnetic sensors (11, 12) for measuring the position of mobile elements (21, 22) that are moving along adjacent trajectories, with each magnetic measuring sensor delivering a measurement signal that is representative of the position of the mobile element in an open magnetic circuit (31, 32), and resources (M) for processing the measurement signals delivered by the magnetic measuring sensors. According to the invention, the processing resources (M) include resources for correction of the magnetic measurement signals in order to take account of interference errors between adjacent magnetic sensors (11, 12), with a view to obtaining a corrected measurement signal for each magnetic measuring sensor.

Abstract: A magnetic sensor for determining the position of a cellular phone in linear movement along an axis of translation, the sensor including a measuring cell fitted to a magnetic circuit and capable of measuring the variations in the value of the magnetic induction flux consecutive with the reluctance variations of the magnetic circuit. According to the invention, the sensor further includes a single delimiting fixed magnetic circuit between two fixed pole parts, a variable air gap within which at least a magnetic induction is created that extends along a length parallel to the axis of translation and at least equal to the travel to be measured of the cellular phone, and a measurable air gap to which the measuring cell is fitted.

Abstract: The object of the invention relates to an encoder for a rotary position sensor, including a multipolar magnetic ring driven into rotation around its axis, and provided at its circumference with magnetic poles of a given sign, alternately positioned with magnetic poles of an opposite sign, so as to form at least one series of pairs of magnetic poles with a determined period, each magnetic pole of a given sign having a width Ii and a magnetic polarisation value Mi whereas each magnetic pole of opposite sign has a width Ii+1 different from width Ii and a magnetic polarisation value Mi+1, characterized in that the polarization of the magnetic poles is such that Mi×Ii=Mi+1×Ii+1.

Abstract: A sensor including at least one rotary magnetic coder with first and second rotary tracks, at least two detection cells, and logical resources for processing of digital signals delivered by the cells. At least the detection cell located in relation to a magnetic track with a singular pole is a single-element detection cell, and the generator elements of the magnetic tracks and the detection cells are arranged in dependence on the logical processing resources such that the digital output signal has the same constant period, both on its regular coding part and on its irregular coding part, and the regular coding part and the irregular coding part have cyclic ratios that are unbalanced and different from each other.

Abstract: The invention concerns a position sensor in which the irregular pole includes resources for correcting the value of its magnetic field so as to stabilize the differential signal in such a way that the part of the differential signal taken at the passage through zero, and located between the parts of the differential signal corresponding to the passages of the adjacent poles, has a slope whose value, in absolute terms, is more-or-less identical to the values of the slopes of the parts of the differential signal obtained at the passage through zero and corresponding to the passages of the other poles.

Abstract: A magnetic sensor including a first resource (3) for the creation of a magnetic field, oriented along a first axis in the direction of the axis of movement, and a second resource (6) for the creation of a magnetic field, oriented along a second axis in the direction of the axis of movement, opposed to the first direction. The first and second field-creation resources are mounted opposite to each other in order to form, between them, a magnetic measuring gap in which the measuring element that is sensitive to the value of the magnetic flux generated by the first and second field-creation resources is located, with the measuring element or the first and second field-creation resources being linked to the mobile object.

Abstract: The invention concerns a process to detect the ignition phase of a cylinder in an internal combustion engine with controlled ignition, the ignition being performed by a system known as “Static twin lost spark”, formed from at least one coil (3) that includes a primary winding (4) and a secondary winding (6) wound onto a magnetic circuit (7), where the process includes the following stages: creation of a magnetic circuit (7) not directly linked to a voltage reference (14), so that its electrical potential (VN1) is an image of the mean electrical voltage of the secondary winding (6), limiting the range of variation of the electrical potential (VN1) of the magnetic circuit (7) between minimum and maximum limit values, detecting the polarity of the electrical potential (VN1) of the magnetic circuit (7) corresponding to the appearance of an ignition spark on a spark plug.