Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Commissariat a L'energie Atomique

Movea

Viviane Cattin

Bernard Guilhamat

Roland Blanpain

Bruno Flament

William Fourcault

Malvina Billeres

Pierre Perichon

Suzanne Lesecq

Franck Vial

Philippe Peltie

Pierre Grenet

Rosolino Lionti

Nathalie Sprynski

Miguel Aubouy

Maxime Montaru

Jérôme Doutaz

Ismaïl El-Marfouq

Marie-Cecile Maillot

Rouba Al Nazer

Jawad Dahmani

Ismael El-Marfouq

Marie-Cécile Maillot

An accumulator battery system has stages, a power connection, a controller, and circuits. The stages are series-connected. Each has an electrochemical accumulator and a switch. A power connection connects a load to the stages. Each the circuit is associated with a stage. Each circuit generates a voltage variation at terminals of its associated stage, and applies, to a switch of the associated stage, a binary sequence at a frequency. The sequence differs from those of other stages, thus allowing distinguishing between stages based on the sequence. The controller, which is connected to the stages by the power connection, measures a voltage variation across terminals of the stage in response to application of the binary sequence to the stage, identifies a stage from which the variation originates by searching for its associate sequence, and determines, from the variation, an impedance of the identified stage for that frequency.

System of power batteries for determining the impedance of a stage

The invention relates to a DC electrical power supply source including The storage devices are connected electrically in series by way of interconnection elements. There is The filling medium exhibits a homogeneous acoustic impedance and forms a continuous acoustic link between the interconnection elements and the acoustic sensor.

Battery protected against electric arcs

The magnetic field measurement system comprises a triaxial main sensor () for measuring magnetic field that can move jointly with a carrier element () capable of generating at least one additional magnetic field disturbing the measurements of said triaxial main sensor (), said triaxial sensor () being adapted for providing orthonormal measurements for a reference magnetic field in the absence of magnetic disturbances due to said carrier element (). The system comprises means of adjustment () of said triaxial main sensor () comprising a removable additional sensor for magnetic field measurement, that can move jointly with said carrier element (), and disposed outside said carrier element () away from the additional magnetic field or fields.

System for measuring a magnetic field comprising a three-axis sensor for measuring a magnetic field that is able to move together with a carrier that disrupts the measurements, and associated method

This method of compensation in the measurement of a magnetic field comprises: the determining of a position and of a magnetic moment of an image of the source situated on the other side of the magnetic disturber using one or more measurements of the emitted magnetic field, performed by at least one magnetic sensor whose position and orientation relatively to the source are known, and the subtraction of the magnetic field emitted by this image from the measurement of the magnetic field made by the sensor in the presence of the magnetic disturber to obtain compensation in this measurement.

Method and device for compensation in a measurement of a magnetic field, object-localizing method and system, recording medium for these methods

This method for detecting a disturber of magnetic field amplitude comprises:

Detection method and detector of a disruption, positioning method and system using said method

Identifying measurement subset comprising a disturbed measurement disturbed by a magnetic disturber includes emitting and measuring magnetic fields using mono-axial source/mono-axial transducer pairs to obtain real measurements distinguished by position of a source used to emit the field, position of transducer used to measure the field, and field frequency, a source being tied to a mobile object and the transducer tied to a frame of reference in which a position of the mobile object is to be expressed (or vice versa), estimating position of the object in the reference frame based on an observer and involving only a first subset of the measurements, estimating the measurements based at least in part on the estimated position Pi and on a direct model linking the object's position to the measurements, and determining whether or not the first measurement subset comprises a disturbed measurement by comparing the estimated and real measurements.

Method and device for identifying a subset of measurements, method and system for locating an object, recording medium for these methods

This method of converting a displacement of a magnetic object into a signal directly perceptible by a human being, comprises: &#x2014;the acquisition () of a temporal succession of measurements of a magnetic field modified by the displacements of the object during a sliding time window of predetermined duration, &#x2014;the construction () on the basis of this acquired temporal succession of measurements of several signals each representing a characteristic of the measured magnetic field dependent on a corresponding characteristic of the displacement of the object, and &#x2014;the adjustment () of several parameters of the directly perceptible signal as a function of the signals so as to render these characteristics directly perceptible.

Method and apparatus for converting a displacement of a magnetic object into a directly perceptible signal, instrument incorporating this apparatus

The invention relates to a portable device for printing an image in a printing area provided on a material substrate, which includes: at least one removable benchmark (-) capable of being manually positioned on the substrate and associated with a corresponding point of the image being printed by means of a predefined relationship separate from the position of said benchmark on the substrate, a measurement unit capable of measuring the position of the printing head relative to the benchmark, and a control unit () capable of determining the distance separating the pen from the substrate, from the measurement of the position of the printing head, and of preventing the image from being printed on the substrate if said distance is greater than a predetermined threshold.

Portable device and method for printing an image, recording medium, pen and benchmark for said device

A method of reconstructing, in two dimensions, a path of a living being or of an object moving, by a repetitive movement, in a plane or a two-dimensional surface or along a plane or a two-dimensional surface, including: measuring at least two variable components of the projection of the terrestrial magnetic field on at least two axes of a biaxial or triaxial magnetometer connected to or situated on the living being or object, measuring the period, or frequency, of a signal corresponding to the measurement of at least one of the variable components along one of the axes of the magnetometer, measuring the heading, or direction, of the movement, from at least two field measurements along at least two axes of the magnetometer, and reconstituting the path from the measurements of period or frequency and of heading or direction.

Device and method for detecting the path of an object moving in two dimensions

The invention relates to sensors of the speed of movement of a vehicle over the ground. The sensor comprises illumination means for illuminating the surface and at least one optical sensor able to detect the radiation returned by the surface. The illumination means and the optical sensor have one and the same optical axis, oblique in relation to the surface. This arrangement eliminates the risks of specular reflection dazzling the sensor while avoiding disturbance of the measurement by variations in the height of the sensor relative to the ground.

Optical device for measuring moving speed of an object relative to a surface

A system for measuring a magnetic signature of a vehicle, including: at least a first set of sensors (C) that are stationary and arranged along at least a first direction; at least a second set of sensors (C) that are stationary and arranged along at least a second direction that intersects the first direction; a common sensor (C) arranged at a location where the first set of sensors and the second set of sensors intersect, said common sensor belonging to the first and the second sets of sensors, wherein the first set of sensors and the second set of sensors are arranged so that the vehicle passes above at least part of the sensors of the first and second set of sensors; and a calculation device for calculating a relation between a time signature S(t) of the vehicle passing above the common sensor and a spatial profile S(x) resulting from measurements made by the first set of sensors.

Magnetic traffic control system

The measurement method of the displacement speed of a moving element with respect to a fixed element is performed by means of an optic measuring device comprising a first reference sensor and a plurality of distinct second measurement sensors substantially aligned along the axis of movement of the moving element. The measurement method comprises determination of estimated speeds by correlation of the signals supplied by the reference sensor and each of the measurement sensors, and calculation of a mean speed of said estimated speeds.

Displacement Speed Measurement Method

An optical device for measuring the displacement velocity of a first movable element in relation to a second element which is fixed to one of said elements and comprises two lasers transmitting two incident beams towards the other elements. The device including photosensitive linear arrays for front and rear detection which are substantially perpendicular to each other. Additional front and rear photosensitive linear arrays are disposed at a distance from the photosensitive front and rear linear arrays. A processing circuit is connected to the photosensitive linear arrays and determines the longitudinal and/or transversal displacement velocity of the movable element. The circuit also determines the distance between the device and the other element by means of optical triangulation and corrects the longitudinal and/or transversal displacement velocity value according of the said distance.

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Saint Egreve, France

Viviane Cattin