摘要:
A method for dividing an analyte present in a solution and that is fixed on magnetic particles, and devices to be used in the method and systems for implementing the method. The method includes sedimentation of the magnetic particles together with separation into a plurality of residues. One implementation: forms at least a residue of magnetic particles in a first receptacle; and displaces the at least the residues towards a plurality of second receptacles, preferably by relative translation of a magnetic system. The second receptacle is connected to the first receptacle through a fluid channel.
摘要:
A method for dividing an analyte present in a solution and that is fixed on magnetic particles, and devices to be used in the method and systems for implementing the method. The method includes sedimentation of the magnetic particles together with separation into a plurality of residues. One implementation: forms at least a residue of magnetic particles in a first receptacle; and displaces the at least the residues towards a plurality of second receptacles, preferably by relative translation of a magnetic system. The second receptacle is connected to the first receptacle through a fluid channel.
摘要:
A vehicle wheel arch having an electrical circuit for communicating with an electronic component installed in a tire of the vehicle. The wheel arch comprising an electrical circuit embedded within or installed on a surface of the wheel arch. The electrical circuit includes an antenna formed by a substantially flat arrangement of an electrical conductor and configured to communicate at least one of power and data to the electronic component installed in the tire.
摘要:
A device for the measurement by induction of a medium through a metal wall using a transmission portion permitting the induction of a signal in the medium beyond the metal wall and a receiver for receiving a signal transmitted by the medium in response to the induced signal. The transmission portion includes at least one current generator directly connected to the metal wall in such a way that the current passing into the wall induces a signal beyond the wall.
摘要:
A generator having at least four coils wound around each of the winding axes, these four coils being spaced out from one another to cancel at least the first derivative up to the seventh derivative of the magnetic field generated by these coils, in parallel to the winding axis, at a central point when they are powered by the same current, and the circumference of each coil is a circle, the diameter of this circle being equal within 2% of the diameter of a circle defined by the intersection between a sphere centered on the central point and a plane, perpendicular to the winding axis of this coil, passing through this coil, the sphere being the same for all the coils wound around the same winding axis.
摘要:
A vehicle wheel arch having an electrical circuit for communicating with an electronic component installed in a tire of the vehicle. The wheel arch comprising an electrical circuit embedded within or installed on a surface of the wheel arch. The electrical circuit includes an antenna formed by a substantially flat arrangement of an electrical conductor and configured to communicate at least one of power and data to the electronic component installed in the tire.
摘要:
The present invention relates to an autonomous device which is intended to be carried by a tire and wheel assembly in order to detect revolutions of said assembly, comprising at least one sensor which produces signals and an interpreter device which is connected to the sensor in order to interpret the signals produced by the sensor. The sensor is a passive sensor, the produced signals of which are proportional to the temporal variations of a magnetic flux though this sensor, and is intended to be integral in rotation with the tire such that the revolutions of said assembly correspond to the revolutions of said sensor. The invention likewise relates to an assembly provided with an autonomous device which permits detection of revolutions of the assembly, and a method for detecting revolutions of the assembly.
摘要:
The invention relates to a fluxgate micromagnetometer implemented in thin layers, fitted with at least one excitation coil with an arrangement and a structure that bring improvements particularly in terms of the magnetometer footprint, reduction in the “offsets” of measurements taken by the magnetometer, common mode rejection.
摘要:
The invention relates to an NMR device for detection of resonant protons contained in an object. The device comprises permanent magnets for producing a static and uniform magnetic field in a region located outside the device with respect to which the object will be positioned, these permanent magnets being laid out around an axis on which the said region is located, such that their magnetization direction is directed towards the said region and such that the magnetization values of the permanent magnets combine their effects to produce the static and uniform magnetic field in the said region. The device also comprises means for emission of an electromagnetic signal to the said region and reception of an electromagnetic signal returned from the said region in response to the emitted signal, these means being located inside the space delimited by the said permanent magnets.
摘要:
The disclosure relates to an open magnetic structure for producing an intense, stable magnetic field, which is amplitude and direction-controlled in a region adjacent to said structure, having at least one magnetic source (4) for producing said magnetic field, characterized in that it also comprises at least one pole piece (5, 6) associated with the magnetic source and having a shape designed so as to control the magnetic field produced.Application to petroleum or oil research in drilled wells and to surface magnetic imaging.