Commissariat a L'energie Atomique

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

Thomas Jager

Ghislain Despesse

Jean-Jacques Chaillout

Jean-Michel Leger

Andréa Vassilev

Romain Guigon

The present invention relates to a vector magnetometer for measuring the components of an ambient magnetic field. This vector magnetometer comprises an optically pumped scalar magnetometer ('), a pair of conductive windings (Ex,Ey) having distinct axes (Ox, Oy) and powered by two generators (Gx, Gy) having distinct frequencies. The RF coil () of the scalar magnetometer and the conductive windings (Ex,Ex) are mechanically integral with a swivel support () mounted on swivel means. The axis of the RF coil is in the same plane as the axes Ox, Oy. The support is swivelled so that this plane is substantially orthogonal to the ambient magnetic field.

High resolution and high precision vector magnetometer

Device for converting mechanical energy from the impact of objects into electrical energy, comprising a frame, a membrane suspended on said frame by at least a first and second longitudinal end, said membrane being intended to be impacted by said objects in a direction substantially transverse to a mid-plane of the membrane, said membrane comprising a core made from material for transducing mechanical energy into electrical energy, extending from the first longitudinal end to the second longitudinal end, and at least one electrode on a first face of the core and at least one electrode on a second face of the core, said electrodes extending from the first to the second longitudinal end.

Device for converting mechanical impact energy into electrical energy with optimised efficiency

A method for converting mechanical energy into electrical energy by at least one piezoelectric element and at least one variable capacitor. The method: a) mechanically deforms the piezoelectric element; b) recovers charges produced by the deformation of the piezoelectric element; c) transfers the charges from the piezoelectric element to the capacitor; d) modifies the capacitance of the capacitor; and e) recovers at least some of the electrical energy. A device for converting mechanical energy into electrical energy includes a piezoelectric element and a variable capacitor. The piezoelectric element is capable of transferring charges to the capacitor.

Method and device for converting mechanical energy into electrical energy

A variable capacitance device including at least one first fixed electrode and a second electrode free to move with respect to the fixed electrode, each electrode including a body and protuberances projecting from at least one face of the body. Each electrode is arranged such that the faces of each electrode provided with the protuberances are facing each other, the distance separating the two faces facing each other being greater than the sum of the heights of a protuberance from the fixed electrode and a protuberance from the mobile electrode. The electrodes are capable of moving with respect to each other in two parallel planes along at least one main direction.

Optimized energy conversion device

A capacitive device comprising at least one first and one second comb, respectively provided with interdigital fingers, adapted to be mobile relative to each other depending on the closing-spacing apart of the axes of the fingers, at least one finger of the first comb including a face opposite a face of a finger of the second comb wherein the axis of the finger of the first comb and the axis of the finger of the second comb are inclined relative to a plane orthogonal to the first direction of displacement of the combs, the plane being defined by the second and third directions perpendicular to the direction, and perpendicular to each other.

Device with optimised capacitive volume

A system for conversion of mechanical energy into electrical energy by electrostatic conversion that includes at least one fixed electrode () and at least one mobile electrode () that can be vibrated by mechanical energy, facing the fixed electrode, said fixed () and mobile () electrodes being separated at rest by an air gap distance (&#x394;). The system includes means () of modifying the air gap distance as a function of the variation of the vibration amplitude of the mobile electrode (). An energy conversion method using such a system is also described.

Growing community of inventors

Grenoble, France

Thomas Jager