Abstract: A method and a device for multi-class classification of an application relative to a classification of a transport mode by machine learning, including: (a) sensors configured to measure at successive instants physical quantities specific to said application, and (b) a microprocessor configured to: (b1) acquire said successive measurements from the sensors to calculate predictors from physical quantities of said measurements, (b2) construct continuous series (aj) of samples, each sample being a vector formed of a predetermined number of predictors, (b3) break down each series (aj) of samples into a set of sequences (Sk) each corresponding to a specific class among a set of predetermined classes, (b4) under-sample the sequences associated with the classes among said set of predetermined classes while conserving for each selected sequence a predetermined fraction of samples of said sequence, thereby forming classes associated with balanced samples, and (b5) construct a classifier (F) from said balanced samples b

Abstract: A system for detection of an air transport made includes a barometric sensor to measure the values of the atmospheric pressure, and a processing unit to acquire the pressure values and to identify if the transport mode is air transport (aircraft mode), depending on the pressure measurements.

Abstract: A system for detection of an air transport made includes a barometric sensor to measure the values of the atmospheric pressure, and a processing unit to acquire the pressure values and to identify if the transport mode is air transport (aircraft mode), depending on the pressure measurements.

Abstract: The method involves a step of measurement of a bearing force (Fpn) on a pedal (1) of the pedal set (4), different from the useful effort, exerted by the individual during a pedalling cycle, a step of determination of a maximum (max(Fpn)) of the bearing force measured during the pedalling cycle (CPj), and a step of estimation of a mean useful effort exerted by the individual during said pedalling cycle from the maximum of the bearing force determined and with the aid of a predetermined correlation function between a maximum bearing force during a pedalling cycle and a mean useful effort in said cycle.

Abstract: A method and a device for multi-class classification of an application relative to a classification of a transport mode by machine learning, including: (a) sensors configured to measure at successive instants physical quantities specific to said application, and (b) a microprocessor configured to: (b1) acquire said successive measurements from the sensors to calculate predictors from physical quantities of said measurements, (b2) construct continuous series (aj) of samples, each sample being a vector formed of a predetermined number of predictors, (b3) break down each series (aj) of samples into a set of sequences (Sk) each corresponding to a specific class among a set of predetermined classes, (b4) under-sample the sequences associated with the classes among said set of predetermined classes while conserving for each selected sequence a predetermined fraction of samples of said sequence, thereby forming classes associated with balanced samples, and (b5) construct a classifier (F) from said balanced samples b

Abstract: The method involves a step of measurement of a bearing force (Fpn) on a pedal (1) of the pedal set (4), different from the useful effort, exerted by the individual during a pedalling cycle, a step of determination of a maximum (max(Fpn)) of the bearing force measured during the pedalling cycle (CFj), and a step of estimation of a mean useful effort exerted by the individual during said pedalling cycle from the maximum of the bearing force determined and with the aid of a predetermined correlation function between a maximum bearing force during a pedalling cycle and a mean useful effort in said cycle.

Abstract: Locating a moving magnetic object includes determining its position or orientation from measurements from an array N tri-axial magnetometers (N>5) mechanically linked to one another with 0-DOF by repeatedly estimating its position relative to the array from measurements made either in a preceding iteration or from a sensor distinct from the array's magnetometers before making a new measurement using the array's magnetometers; computing the distance between each magnetometer and the object's estimated position; eliminating Ni magnetometers closest to this estimated position, where Ni<N; using the remaining magnetometers, making a new measurement of the field generated or modified by the object; and determining its new position or orientation from the new measurements so as to obtain the object's new location.

Abstract: A method of detecting a point of contact between a tip of an instrument and a writing support, the instrument being one of a pen and an eraser, and the method comprising determining, with the aid of a magnetic object fixed without any degree of freedom on the instrument, the height of a point of the instrument with respect to a bearing face of a tablet. The bearing face constituting the writing support or supporting the writing support. The method further includes: comparing the height determined with a preconfigured contact threshold, and detecting a point of contact between the tip of the instrument and the writing support if the height determined is less than the contact threshold and, in the converse case, detecting no point of contact between the tip of the instrument and the writing support.

Abstract: A system including: a centralization unit; and a plurality of detection and/or measurement devices, each device including a radio module capable of communicating with the centralization unit, and a sensor different from the radio module, capable of measuring a physical quantity representative of a variation of the environment of the device, wherein each device is capable of adjusting at least one configuration parameter of its radio module by taking into account a measurement performed by its sensor.

Abstract: The invention applies to a pointing device of a mobile element, for example a cursor, on a plane surface. The pointing device comprises a first sensor for measuring the angular rates of the device and a second sensor of the linear accelerations along three dimensions of said device. Preferably, the first sensor is a two-axis or three-axis gyrometer and the second sensor is a three-axis accelerometer. The invention makes it possible to render the movements of the mobile element in the surface of the orientation in which the pointing device is held by its user. This result is achieved by global resolution of the angles of torsion by combining the measurements of the first and second sensors either within an extended Kalman filter or by application of an optimization criterion.

Abstract: A method of detecting a point of contact between a tip of an instrument and a writing support, the instrument being one of a pen and an eraser, and the method comprising determining, with the aid of a magnetic object fixed without any degree of freedom on the instrument, the height of a point of the instrument with respect to a bearing face of a tablet. The bearing face constituting the writing support or supporting the writing support. The method further includes: comparing the height determined with a preconfigured contact threshold, and detecting a point of contact between the tip of the instrument and the writing support if the height determined is less than the contact threshold and, in the converse case, detecting no point of contact between the tip of the instrument and the writing support.

Abstract: A method for locating a moving magnetic object, comprising: determining the position or the orientation of the magnetic object from measurements of an array of N (an integer greater than 5) tri-axial magnetometers mechanically linked to one another with no degree, the method also comprises the reiteration of the following steps.

Abstract: A method of estimating the orientation of an object in space at time k using measurements of the total acceleration (yA), magnetic field (yM) and rotation speed (yG) of said object along three spatial axes, comprising the following steps: A—preprocessing of said measurements (yA, yM, yG) at a moment k to detect the existence of a disturbance in said measurements and estimate disturbance-free measurements at time k, B—estimation of the orientation ({circumflex over (q)}k) at time k by an observer from the disturbance-free measurements ({tilde over (y)}A,k, {tilde over (y)}M,k, {tilde over (y)}G,k) at time k obtained from the step A.

Abstract: The invention applies to a pointing device of a mobile element, for example a cursor, on a plane surface. The pointing device comprises a first sensor for measuring the angular rates of the device and a second sensor of the linear accelerations along three dimensions of said device. Preferably, the first sensor is a two-axis or three-axis gyrometer and the second sensor is a three-axis accelerometer. The invention makes it possible to render the movements of the mobile element in the surface of the orientation in which the pointing device is held by its user. This result is achieved by global resolution of the angles of torsion by combining the measurements of the first and second sensors either within an extended Kalman filter or by application of an optimization criterion.

Abstract: Sports ball, and more generally a pneumatic object with at least one internal pressure sensor (10) of said ball, automatic inflator (6), capable of compensating for a decrease in the internal pressure, this inflator having at least one gas micro-generator, said at least one micro-generator being capable of being actuated when the pressure sensor (10) measures an internal pressure below a predetermined threshold.

Abstract: The electronic pen comprises a lead equipped with a tip, an ink container and a three-dimensional force sensor for measuring the forces applied on the lead by a user. The three-dimensional force sensor, placed for example at a distance of less than 15 mm from the tip of the lead, comprises a sensitive detection element placed in the axis of the tip of the lead The pen comprises a first element made of flexible material arranged between the ink container and the three-dimensional force sensor to transmit the forces applied on the lead to the three-dimensional force sensor. The pen can comprise a second element made of flexible material for securing the ink container inside the lead.

Abstract: Sports ball, and more generally a pneumatic object with at least one internal pressure sensor (10) of said ball, automatic inflator (6), capable of compensating for a decrease in the internal pressure, this inflator having at least one gas micro-generator, said at least one micro-generator being capable of being actuated when the pressure sensor (10) measures an internal pressure below a predetermined threshold.

Abstract: A device for recovering mechanical energy from a mobile support and/or from a fluid in movement. The device includes a part fixed to the support or fluid, and a mobile part in suspension. The fixed part is of lower mass than the mobile part. The mobile part includes a case of the device.

Abstract: In an energy recovery system based on relative movement between a fixed part and a mobile part connected by flexible connecting means, the flexible link is made so as to provide variable mechanical stiffness, for example due to the presence of repulsive elements or use outside the linear range. Thus, more compact vibrational mechanical energy recovery systems can be made, with a widened usage range, that are more robust than existing systems.