Abstract: The invention relates to an electronic device for measuring a specific quantity, the device having a two-wire interface having two connection terminals intended to be connected to a conductive pair supplying the measuring device and conveying in return an electrical quantity representative of the measured quantity. The device comprises a transducer providing a raw measurement of the determined quantity, a processing stage for conditioning the raw measurement, the processing stage including one input connected to the transducer and one output, a regulator electrically connected to the processing stage. The regulator includes an input port electrically connected to the two connection terminals of the two-wire interface and an output port supplying regulated voltage to the transducer and/or to the processing stage. The device also includes a feedback circuit electrically connected to the regulator input port and to the processing stage.

Abstract: According to one embodiment, a sensor includes a base body, a first movable structure body, and a first fixed structure body. The first movable structure body includes first movable electrodes. A direction from the base body toward the first movable electrodes is aligned with a first direction. A distance between the base body and the plurality of first movable electrodes is changeable. A direction from one of the first movable electrodes toward an other one of the first movable electrodes is aligned with a second direction crossing the first direction. The first fixed structure body includes first fixed electrodes. One of the first fixed electrodes is between the one of the first movable electrodes and the other one of the first movable electrodes. A first movable electrode length along the first direction is shorter than a first fixed electrode length along the first direction.

Abstract: A physical quantity sensor includes a substrate, a movable body that is provided displaceably in a state of being opposed to the substrate and is provided with a first through-hole and a second through-hole as through-holes, and a protrusion configured integrally with the substrate at a side of the movable body of the substrate, and in which the protrusion is provided at a position where the protrusion overlaps the through-hole and the movable body in plan view.

Abstract: An inertial sensor includes a substrate, a movable element that swings around a swing axis; and a protrusion that overlaps with the movable element in the plan view and protrudes from the substrate toward the movable element. The protrusion includes a first protrusion and a second protrusion so located as to be farther from the swing axis than the first protrusion, and when the movable element swings relative to the substrate around the swing axis, the first protrusion and the second protrusion come into contact with the movable element at the same time or the first protrusion comes into contact with the movable element and then the second protrusion comes into contact with the movable element.

Abstract: An escape system used for a car being sunken into water and its ultrasonic component are illustrated. The ultrasonic component has a case and an ultrasonic module, and the escape system used for the car being sunken into water has the ultrasonic component and a mainboard. The present disclosure utilizes the property of the ultrasonic to recognize the type and thickness of obstacles which are accumulated in the ultrasonic component, and to determine whether a warning message for sweeping the obstacles should be sent, so as to maintain a sensitivity of the ultrasonic component and further to prevent the ultrasonic component from mistakenly judging that the car is sunken in water.

Abstract: The present disclosure illustrates an escape system for a sunken car and an ultrasonic component. The ultrasonic component has a case and an ultrasonic module, and the escape system for a sunken car has at least the ultrasonic component and a main board. The escape system for the sunken car and the ultrasonic component in present disclosure utilize the property of the ultrasonic to recognize the type and thickness of the obstacle which is accumulated in the ultrasonic component, and to determine whether the warning message for sweeping the obstacle should be sent, so as to maintain the sensitivity of the ultrasonic component and further to prevent the ultrasonic component from mistakenly judging the car is sunk.

Abstract: A gyro sensor includes a plurality of beams connected via a turnaround part. A groove is provided on a main surface of at least one beam of the plurality of beams. Wall thicknesses on the main surface of two sidewalls facing each other of the groove in a direction orthogonal to a longitudinal direction of the beam satisfy 0.9?T1/T2?1.1, where T1 is the wall thickness of one sidewall and T2 is the wall thickness of the other sidewall.

Abstract: A piezoelectric body of a sensor includes a driving arm and detecting arm which extend from a base part in a y-axis direction. Excitation electrodes vibrate the driving arm in an x-axis direction. Detecting electrodes enable detection of a signal due to deformation in a z-axis direction of the detecting arm. The piezoelectric body has anisotropy causing vibration of torsional deformation when the driving arm vibrates in the x-axis direction. When the driving arm bends to a +x side, the base part flexes so that a connection position in the base part is displaced to one side in the z-axis direction. The cross-section of the driving arm perpendicular to the y-axis direction causes a bending stiffness to the +x side and to the other side in the z-axis direction is smaller than a bending stiffness to the +x side and to the one side in the z-axis direction.

Abstract: A method, apparatus, system, and computer program product for estimating a mass of a prepared food product. An ultrasonic beam is steered by a computer system at the prepared food product on a platform. An estimate of a mass of the prepared food product on the platform is determined by the computer system using response signals detected in response to scanning the prepared food product on the platform with the ultrasonic beam.

Abstract: A method of tuning a vibratory gyroscope, the method comprising the steps of: a) applying an AC drive signal to the drive electrode, the drive signal comprising a plurality of frequencies; b) sensing the response of the resonator to the drive signal at the first and second sense electrodes; c) determining a frequency of maximum response for the first mode of vibration, and determining a frequency of maximum response for the second mode of vibration; d) deriving a comparison result from a comparison of the frequency of maximum response for the first mode of vibration with the frequency of maximum response for the second mode of vibration; and e) applying a biasing voltage to one or more of the tuning electrodes dependent on the comparison result.

Abstract: The adjustable voltage regulator under control of a microcontroller applies controlled amplitude voltage in the range of 5 to 9 VDC to the sensor transmitter to adjust the output amplitude of the transmitter. The adjustable amplitude transmitter allows an occupancy sensor to have its total output energy adjusted to reduce environmental noise-induced false triggering and to conform to the area to be covered. Lowering the total ultrasonic energy in the monitored space lowers the sensitivity of the receiver to inappropriate activations. Lowering the input power to the transmitter also lowers the total internal system noise and provides an improved signal to noise ratio in the receiver.

Abstract: An ultrasonic inspection method that includes arranging an ultrasonic transmission element and an ultrasonic reception element symmetrically in relation to a straight line in a diameter direction orthogonal to the cylinder axis of a cylindrical inspection object, the inspection object being interposed between the ultrasonic transmission element and the ultrasonic reception element; transmitting ultrasonic waves from the ultrasonic transmission element at a plurality of positions in the diameter direction; receiving by the ultrasonic reception element the ultrasonic waves transmitted from the ultrasonic transmission element and transmitted through the inspection object by propagating through the inside of the inspection object; and inspecting the inspection object on the basis of a reception signal of the ultrasonic waves received by the ultrasonic reception element.

Abstract: This disclosure is related to devices, systems, and techniques for inducing mechanical vibration in one or more mechanical structures. For example, a system includes a mechanical structure extending along a longitudinal axis. The mechanical structure includes a set of mechanical beams, where the set of mechanical beams are configured to guide a modulated optical signal, and where the set of mechanical beams includes a first mechanical beam and a second mechanical beam separated by a gap. The first mechanical beam includes at least one of a first corrugated inner edge parallel to the longitudinal axis and a first corrugated outer edge parallel to the longitudinal axis. The second mechanical beam includes at least one of a second corrugated inner edge parallel to the longitudinal axis and a second corrugated outer edge parallel to the longitudinal axis.

Abstract: A method is provided for generating ultrasound transmission waves comprising: a) providing an array of electroacoustic transducer elements each one being connected to an electric excitation signal generator by a dedicated feeding channel; b) feeding at least a part of the electroacoustic transducer elements with a pulsed electric signal having a predetermined frequency, a predetermined amplitude, a predetermined length or duration and a predetermined phase or a predefined delay with respect to the pulsed electric signals fed to the adjacent transducer elements, the said pulsed electric excitation signals comprising a sequence of pulses; c) modulating each or at least part of the pulsed electric signals by feeding to the transducer elements only a predetermined portion of the pulses of the said pulsed electric signals. Modulating is carried out by cutting the duration of each pulse of the pulsed electric excitation signal according to a predetermined time period.

Abstract: According to one embodiment, a sensor includes a movable member including a first movable portion and a second movable portion, and a first fixed member. At least a portion of the first fixed member is between the first movable portion and the second movable portion. The first fixed member includes a first fixed counter portion opposing the first movable portion, and a second fixed counter portion opposing the second movable portion. The first fixed counter portion includes a first fixed protruding portion protruding toward the first movable portion. The second fixed counter portion includes a second fixed protruding portion protruding toward the second movable portion.

Abstract: A vibration gyroscope includes: a mass part supported to be displaceable in a first direction and a second direction; an exciter vibrating the mass part in the first direction; and a detector detecting a displacement amount of the mass part in the second direction. The first direction and the second direction are orthogonal to each other. A resonance frequency of the mass part in the first direction coincides with a resonance frequency of the mass part in the second direction. A Q-factor of vibration of the mass part in the second direction is smaller than a Q-factor of vibration of the mass part in the first direction.

Abstract: Systems and methods for suppressing bias in a non-degenerate vibratory structure are provided. In certain embodiments, a vibratory structure includes a first proof mass; a second proof mass, wherein the first proof mass and the second proof mass are driven into motion along a first axis, wherein the first proof mass and the second proof mass move in anti-phase along a second axis, wherein the motion of the first proof mass and the second proof mass along the second axis is such that the centers of mass of the first proof mass and the second proof mass move collinearly along a same axis.

Abstract: Impact or acceleration sensor, which contains a liquid droplet and is designed such that the position and/or distribution of the liquid indicates whether an impact or any other acceleration of a predetermined minimum magnitude has occurred, includes: first and second foils, a cavity disposed between the foil faces of the foils and at least one retaining structure disposed on the foil face of the first and/or second foil and functions to maintain the liquid in a predetermined first sub-volume of the cavity. The retaining structure is a region of the first and/or second foil formed as a local elevation, depression or irregularity of the foil face, which forms a passable barrier for the wetting and/or contacting of the first and/or second foil by the liquid and defines an area piece of the foil face of the first and/or second foil corresponding to the first sub-volume.

Abstract: A capacitive device includes a unit cell including a CMUT, and a transmission/reception plate for impedance matching which is provided above the unit cell via a connection portion, in which a membrane of the CMUT constituting the unit cell is connected to the transmission/reception plate via the connection portion having an area smaller than that of the transmission/reception plate. The area of the transmission/reception plate is desirably larger than the area of a hollow portion of the CMUT.

Abstract: A method of characterizing an inertial measurement unit includes a block carrying one accelerometer positioned on an axis of a measurement reference frame and having one gyro arranged to determine the orientation of the frame relative to an inertial reference frame. The method includes keeping the inertial measurement unit centered on a point that is stationary relative to the ground and that is in a predetermined environment, to obtain accelerometer signals that are images of at least one component of the specific force vector in the measurement reference frame and also gyro signals that are images of at least one component of the instantaneous rotation of the measurement reference frame; processing the signals to obtain data representative of projecting of the specific force vector into the inertial reference frame, after compensating for rotation of the Earth; and calculating Allan variance on the data and comparing it with reference data.