Commissariat a L'energie Atomique Et Aux Energies Alternatives

Consolis

Sercel Inc.

Mikael Carmona

Laurent Jouanet

Nathalie Sprynski

Ghislain Despesse

Jean-Michel Leger

Romain Wacquez

Florian Pebay-Peyroula

Vincent Heiries

Ibrahima Djigo

Alexandre Paleologue

Stephane Neveu

Tony Camuel

Licinius-Pompiliu Benea

Thierry Vicol

The present description concerns a random number generation circuit () of correlated sampling ring oscillator type comprising: two identical ring oscillators (RO, R) implemented in CMOS-on-FDSOI technology; a circuit () sampling and storing an output (O) of one of the two oscillators (RO) at a frequency of the other one of the two oscillators (RO) and delivering a corresponding binary signal (Beat); and a circuit () controlling back gates of PMOS and NMOS transistors of at least one delay element of at least one of the two oscillators (RO, RO) based on a period difference between the two oscillators (RO, RO).

Coherent sampling true random number generation in FD-SOI technology

The invention concerns a method and a system for detecting an electric arc in an electrical installation () equipped with at least one sensor () capable of detecting temporal acoustic signals produced by the electrical installation (), said method being characterised in that it comprises a device for analysis () configured to analyse any temporal acoustic signal () coming from said one or more sensors () by associating with said acoustic signal a corresponding parsimony measurement (m) whose value indicates whether the acoustic signal is an electrical arc signature or not.

System and method for detecting an electric arc

A method for determining trajectory of a mobile object, including: provision of an object including sensors; displacement of the sensors along one and the same trajectory, the sensors maintaining one and the same distance between themselves and each measuring one and the same physical quantity; determination of instants for which the object has travelled an aggregate curvilinear distance which is equal to an integer multiple of the distance and calculation of a direction tangent to the trajectory of the object, for each of the instants determined; automatic reconstruction of the trajectory followed by the mobile object during its displacement by an interpolation, based on, for each reference instant determined, the measured tangent calculated for the reference instant.

Method and electronic calculator for determining the trajectory of a mobile object

A guide system including a railway rail extending along an axis and including an upper element having a rolling face; a lower element having a bearing face; a connecting element between the lower and upper elements, at least one lateral recess being formed between the lower and upper elements; at least first and second attitude sensors fixed to the rail by glue at respective positions offset along the axis of the rail, the attitude sensors being housed at least partially in the lateral recess; a processing circuit configured to recover attitude measurements supplied by the first and second attitude sensors and configured to calculate a deformation of the railway rail relative to the axis as a function of the recovered attitude measurements.

Railway guide system including sensors fixed to a rail

A concrete structural element is provided that includes a concrete matrix; a steel reinforcing structure embedded in said matrix; at least first and second attitude sensors at a distance from one another in a direction, embedded in said matrix and fixed to said reinforcing structure; and a processing circuit configured to recover attitude measurements supplied by each attitude sensor and configured to compute a deformation of said structural element relative to said direction as a function of the attitude measurements recovered.

Instrumented concrete structural element

A system including: a cable including: a core capable of transporting at least one useful electric signal; a sheath surrounding said core; at least one conductive wear detection strand embedded in the sheath and substantially extending along the entire length of the cable; and at least one reference conductive element which is not connected to said at least one wear detection strand and substantially extends along the entire cable length; and a control unit capable of measuring the capacitance or the resistance formed between said at least one strand and the reference conductive element.

Electric cable wear control system

Determining an object's inclination fixed reference frame relative to a gravity field includes supplying circularly disposed accelerometers rigidly linked by the object and measuring in non-collinear directions. A radius linking it to the circle's center defines an accelerometer's measurement direction. The accelerometers measure components of the field along the measurement directions to provide measurement values. Then, a matrix equation is solved to obtain the object's inclination relative to the reference frame.

Growing community of inventors

Tencin, France

Mikael Carmona