Abstract: A hybrid cryptographic scheme for a network of nodes, in particular an IoT network, composed of a first subset and a second subset of separate nodes, the computing resources of the nodes of the first subset being greater than the computing resources of the nodes of the second subset, the scheme comprising a first functional cryptographic scheme deployed on the first subset of nodes and a second functional cryptographic scheme deployed on the second subset of nodes, a cryptographic primitive at the root of the second cryptographic scheme generating a pair of private and public master keys from a seed, the seed being obtained by a connection cryptographic primitive from at least the private key of an end node of the first subset, the connection cryptographic primitive being a one-way function.

Abstract: The present description concerns a random number generation circuit (2) of correlated sampling ring oscillator type comprising: two identical ring oscillators (RO1, R02) implemented in CMOS-on-FDSOI technology; a circuit (104) sampling and storing an output (O1) of one of the two oscillators (RO1) at a frequency of the other one of the two oscillators (R02) and delivering a corresponding binary signal (Beat); and a circuit (200) controlling back gates of PMOS and NMOS transistors of at least one delay element of at least one of the two oscillators (RO1, R02) based on a period difference between the two oscillators (RO1, R02).

Abstract: A random number generator including at least one ring oscillator comprising at least one inverter formed by at least two FDSOI LVT transistors, one being of the NMOS type and the other one being of the PMOS type, and further including a circuit for applying voltages on rear gates of the transistors configured to bias the transistors in the FBB mode.

Abstract: The invention concerns a method and a system for detecting an electric arc in an electrical installation (7) equipped with at least one sensor (5) capable of detecting temporal acoustic signals produced by the electrical installation (7), said method being characterised in that it comprises a device for analysis (3) configured to analyse any temporal acoustic signal (5) coming from said one or more sensors (5) 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.

Abstract: The object is provided with a system (1) for measuring at least one given physical quantity. The method comprises a step of measuring, by the measurement system (1), the time evolution of said physical quantity during the transportation of the object along the conveyance path, a step of recognising a plurality of indicia, each indicium corresponding to a path characteristic in the time evolution of the measured physical quantity, a step of determining a timeline of path characteristics corresponding to a sequence of recognised indicia, and a step of locating the object, which involves determining a match between the determined timeline of path characteristics and a predefined spatial representation relative to the conveyor machine.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: The method for instrumenting a container, especially intended to receive an assortment of materials, capable of being set moving in a preset coordinate system, said method comprises the following steps: placing at least one communicating element in the container on an internal surface of the container; and tracking the location of each communicating element over time in the preset coordinate system.

Abstract: 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.

Abstract: 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.

Abstract: The object is provided with a system (1) for measuring at least one given physical quantity. The method comprises a step of measuring, by the measurement system (1), the time evolution of said physical quantity during the transportation of the object along the conveyance path, a step of recognising a plurality of indicia, each indicium corresponding to a path characteristic in the time evolution of the measured physical quantity, a step of determining a timeline of path characteristics corresponding to a sequence of recognised indicia, and a step of locating the object, which involves determining a match between the determined timeline of path characteristics and a predefined spatial representation relative to the conveyor machine.

Abstract: The invention concerns a method and a system for detecting an electric arc in an electrical installation (7) equipped with at least one sensor (5) capable of detecting temporal acoustic signals produced by the electrical installation (7), said method being characterised in that it comprises a device for analysis (3) configured to analyse any temporal acoustic signal (5) coming from said one or more sensors (5) 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: This method of assisting the placement of construction elements of a civil engineering work, comprises: the adjustment (108) of the orientation of each construction element as a function of a discrepancy between a measured orientation for this construction element and an orientation setpoint, the supplying of the construction elements each equipped with at least one orientation sensor, fixed without any degree of freedom to the construction element, able to measure the inclination of this construction element with respect to three non-coplanar axes, and in which the adjustment (108) of the orientation of each element is carried out as a function of the discrepancy between the orientation measured by the orientation sensor fixed to this construction element and the orientation setpoint.

Abstract: The method for instrumenting a container, especially intended to receive an assortment of materials, capable of being set moving in a preset coordinate system, said method comprises the following steps: placing at least one communicating element in the container on an internal surface of the container; and tracking the location of each communicating element over time in the preset coordinate system.

Abstract: 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.

Abstract: 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.