Abstract: Pump (1) intended to pump a fluid between an inlet and an outlet, including: a first annular piezoelectric transducer (11) extending around a central axis (A) and including a first electrode (12); a first resonator (10) connected to the first piezoelectric transducer and extending around the central axis, the first resonator becoming thinner toward the central axis and being deformed by the effect of polarisation of the first piezoelectric transducer; a control unit (30) configured to polarise the first electrode at a polarisation voltage; the first resonator defines a cavity (2) extending around the central axis and configured to receive the fluid; the pump includes at least one channel (4) discharging into the cavity; deformation of the resonator is produced because of the effect of the polarisation of the first piezoelectric transducer, locally and temporarily reducing the thickness of the cavity.

Abstract: Peristaltic pump, intended to pump a liquid along a capillary (2), the pumping resulting from a stress exerted on the capillary, successively along a pumping direction, the pump comprising: K annular piezoelectric transducers (11k), extending about a central axis (?), K resonators (10k), formed from a deformable solid material, each resonator being connected to a piezoelectric transducer, and extending about the central axis, becoming thinner towards the central axis, each resonator being configured to deform under the effect of the polarization of the piezoelectric transducer to which it is connected; a control unit (20), configured to polarize each piezoelectric transducer; the pump being characterized in that: each resonator is connected to a sleeve (3K), extending about the central axis; each resonator is arranged so that the sleeves of each resonator are aligned along a central axis.

Abstract: An electrical device for generating a test pulse, includes at least one voltage generator configured for generating an input voltage pulse in a first phase; for each generator, a coil transformer for amplifying the input voltage pulse; a rectifier diode; a target circuit comprising at least one target complex impedance and a capacitive element, the target circuit having a first electrode connected to the cathode of the rectifier diode and a second electrode; a trigger circuit configured for triggering a second phase by discharging the capacitive element through the target circuit so as to apply the test pulse to the target complex impedance.

Abstract: The present disclosure relates to a system (10) for measuring an electric current (I) flowing through an electrically conductive element (2). The system comprises a device (15) for generating a magnetic field in the electrically conductive element, comprising a support (53) and an electrically conductive wire (50) rigidly coupled to the support, and comprising at least one coil (52) wound around the support, a device for detecting (60) acoustic waves on the surface of the electrically conductive element, and a control and acquisition device (30) comprising a generator (33) configured to provide at least one current pulse in the electrically conductive wire and an acquisition chain for detecting an electrical signal(S) provided by the detection device.

Abstract: An inductive sensor includes a fixed part and a movable part. The movable part comprising a movable or deformable proof body, and a magnetic coupling element mechanically secured to the proof body. The fixed part comprising: a voltage generator and a coil transformer comprising an emission inductance mounted in parallel with the generator and a reception inductance. The magnetic coupling element being separated from an end of the emission inductance by a separation distance. The fixed part comprises an acquisition chain connected to the reception inductance and configured to generate a distance variation measurement signal. The measurement signal corresponding to a measurement of the variation of the frequency or of the amplitude of the voltage at the terminals of the reception inductance.

Abstract: A device for ultrasonic object detection, having at least two independent transducers that are able to emit at least two ultrasonic signals respectively in order to produce reflected ultrasonic signals in return, and able to receive the reflected ultrasonic signals, wherein it has an electronic processing unit configured so as to convert the received reflected ultrasonic signals into respective spectrograms, in an audible frequency band, and form respective audible temporal signals through an inverse Fourier transform of the spectrograms.

Abstract: The present description relates to a device (20) for detecting a magnetic field (Bz) comprising a first tapered acoustic waveguide (40) having a first base (41) and a first tapered end (42), a first electrically conductive wire (50) rigidly coupled to the first tapered end (42), and an electroacoustic transducer (60) rigidly coupled to the first base (41).

Abstract: An electrical device for generating a test pulse, includes at least one voltage generator configured for generating an input voltage pulse in a first phase; for each generator, a coil transformer for amplifying the input voltage pulse; a rectifier diode; a target circuit comprising at least one target complex impedance and a capacitive element, the target circuit having a first electrode connected to the cathode of the rectifier diode and a second electrode; a trigger circuit configured for triggering a second phase by discharging the capacitive element through the target circuit so as to apply the test pulse to the target complex impedance.

Abstract: The present description relates to a device (20) for detecting a magnetic field (Bz) comprising a first tapered acoustic waveguide (40) having a first base (41) and a first tapered end (42), a first electrically conductive wire (50) rigidly coupled to the first tapered end (42), and an electroacoustic transducer (60) rigidly coupled to the first base (41).

Abstract: A device for protecting an electronic system, such as an integrated circuit, the device incorporating a pulse transformer including a ferrite sheet or layer with low magnetic losses that covers a surface of the electronic system and that is encircled by two coils that are located a distance away from each other, one of these coils, the transmission coil, being connected to a transmission stage for transmitting electrical pulses, and the other of these coils, the reception coil, being connected to a reception stage, the whole thing being connected to and controlled by a microcontroller.

Abstract: A device for protecting an electronic system, such as an integrated circuit, the device incorporating a pulse transformer including a ferrite sheet or layer with low magnetic losses that covers a surface of the electronic system and that is encircled by two coils that are located a distance away from each other, one of these coils, the transmission coil, being connected to a transmission stage for transmitting electrical pulses, and the other of these coils, the reception coil, being connected to a reception stage, the whole thing being connected to and controlled by a microcontroller.

Abstract: A device for ultrasonic object detection, having at least two independent transducers that are able to emit at least two ultrasonic signals respectively in order to produce reflected ultrasonic signals in return, and able to receive the reflected ultrasonic signals, wherein it has an electronic processing unit configured so as to convert the received reflected ultrasonic signals into respective spectrograms, in an audible frequency band, and form respective audible temporal signals through an inverse Fourier transform of the spectrograms.

Abstract: A temperature sensor including: a resonant structure vibrating to resonate at a resonating frequency that varies depending on temperature of a plate; at least one sound wave transmitter mounted onto the resonant structure to make the resonant structure vibrate at the resonating frequency; a sound wave receiver mounted onto the resonant structure and configured to capture sound waves propagating within the suspended structure; and connection elements configured to connect the at least one transmitter and receiver to an electronic unit outside the temperature sensor. The connection elements include a connector including four contact points including first and second contact points conveying a stereophonic sound signal, a third contact point providing a mass reference, and a fourth contact point conveying a microphone signal. The connection elements are configured to connect the at least one transmitter to the first and second contact points and connect the receiver to the fourth contact point.

Abstract: A system detecting actuation of a pre-determined function, the actuation executed by touch contact with a pre-determined path associated with the function on a touch-sensitive surface of an object, including: at least two separate sources for transmitting bulk acoustic waves in the touch-sensitive surface, configured to generate acoustic interference between the transmitted waves; at least one bulk acoustic wave receiver after propagation and interference thereof in the touch-sensitive surface, configured to supply a reception signal based on the acoustic waves received; a mechanism storing plural reference spectral signatures associated with the pre-determined path, each of the spectral signatures associated with a localization of a touch on the pre-determined path; and a mechanism detecting actuation of the pre-determined function by comparing at least one spectral signature of the reception signal to a spectral envelope, or reference spectral envelope, of the plural reference spectral signatures associated

Abstract: This system for measuring a flow rate includes a receiver of bulk acoustic waves, a first emitter of bulk acoustic waves in the fluid, intended to be arranged upstream of the receiver in such a way as to emit acoustic waves to the receiver, a second emitter of bulk acoustic waves in the fluid, intended to be arranged downstream of the receiver in such a way as to emit acoustic waves to the receiver, and a signal processing device designed to determine a flow rate value according to at least one characteristic of an electrical signal supplied by the receiver. It further includes an element for synchronizing the first and second emitters with each other in such a way as to generate destructive acoustic interferences between the acoustic waves that they emit before they are received by the receiver.

Abstract: A temperature sensor including: a resonant structure vibrating to resonate at a resonating frequency that varies depending on temperature of a plate; at least one sound wave transmitter mounted onto the resonant structure to make the resonant structure vibrate at the resonating frequency; a sound wave receiver mounted onto the resonant structure and configured to capture sound waves propagating within the suspended structure; and connection elements configured to connect the at least one transmitter and receiver to an electronic unit outside the temperature sensor. The connection elements include a connector including four contact points including first and second contact points conveying a stereophonic sound signal, a third contact point providing a mass reference, and a fourth contact point conveying a microphone signal. The connection elements are configured to connect the at least one transmitter to the first and second contact points and connect the receiver to the fourth contact point.

Abstract: This system for measuring a flow rate includes a receiver of bulk acoustic waves, a first emitter of bulk acoustic waves in the fluid, intended to be arranged upstream of the receiver in such a way as to emit acoustic waves to the receiver, a second emitter of bulk acoustic waves in the fluid, intended to be arranged downstream of the receiver in such a way as to emit acoustic waves to the receiver, and a signal processing device designed to determine a flow rate value according to at least one characteristic of an electrical signal supplied by the receiver. It further includes means for synchronizing the first and second emitters with each other in such a way as to generate destructive acoustic interferences between the acoustic waves that they emit before they are received by the receiver.

Abstract: A system for detecting and localizing at least one touch on a touch-sensitive surface of an object includes: at least two separate sources transmitting bulk acoustic waves in the touch-sensitive surface, configured to generate acoustic interference between the transmitted waves; at least one bulk acoustic wave receiver after propagation and interference thereof in the touch-sensitive surface, configured to supply a reception signal based on the acoustic waves received; a mechanism localizing at least one touch on the touch-sensitive surface of the object by comparing certain spectral characteristics of the reception signal to a set of reference spectral characteristics; a mechanism measuring a temperature of the touch-sensitive surface, and a mechanism adapting the spectral characteristics of the reception signal or the reference spectral characteristics by a frequency shift of at least some of the spectral characteristics as a function of the temperature measured.

Abstract: A system including a mechanism emitting successive acoustic waves in a medium, a mechanism receiving the successive acoustic waves after propagation thereof in the medium, configured to supply a reception signal based on the successive acoustic waves received, and a mechanism detecting and locating disturbance in the medium on the basis of the reception signal. The emitting mechanism is configured such that, amplitude and/or phase spectrum of each acoustic wave having, at a specific frequency at least, an amplitude, or phase, varying in the medium according to a specific spatial distribution of the amplitude, or phase, and the spatial distributions of the amplitude, or phase, of the successive acoustic waves are mutually different.

Abstract: A system detecting actuation of a pre-determined function, the actuation executed by touch contact with a pre-determined path associated with the function on a touch-sensitive surface of an object, including: at least two separate sources for transmitting bulk acoustic waves in the touch-sensitive surface, configured to generate acoustic interference between the transmitted waves; at least one bulk acoustic wave receiver after propagation and interference thereof in the touch-sensitive surface, configured to supply a reception signal based on the acoustic waves received; a mechanism storing plural reference spectral signatures associated with the pre-determined path, each of the spectral signatures associated with a localization of a touch on the pre-determined path; and a mechanism detecting actuation of the pre-determined function by comparing at least one spectral signature of the reception signal to a spectral envelope, or reference spectral envelope, of the plural reference spectral signatures associated