Abstract: A watertightness testing device (1) for performing a watertightness test of a joined section between joined pipes (2 and 3), the watertightness testing device (1) including a testing device body (21) and a moving operation rod (22) for moving the testing device body (21) in the pipes in a pipe axial direction (B) from outside an end section of the pipes, wherein the moving operation rod (22) is provided in the testing device body (21) and extends along the pipe axial direction (B), main supporting members (61 and 62) for supporting the moving operation rod (22) are provided on the moving operation rod (22) outside the pipe (2), and the main supporting members (61 and 62) have a rotatable main rolling member (75) in a lower end section, the main supporting members (61 and 62) are switchable between a supporting posture (K) in which the main supporting members (61 and 62) support the moving operation rod (22) outside of the pipes and a folded posture in which the main supporting members (61 and 62) are folded i

Abstract: An inertia sensor detects a physical quantity based on a displacement in a Z axis when three axes orthogonal to one another are defined as an X axis, a Y axis, and the Z axis. The inertial sensor includes: a substrate; and a movable body that is fixed to the substrate, that swings around a swing axis P along the X axis, and that has two flat surfaces facing each other and a side surface connecting the two flat surfaces. The movable body includes a first extension arranged at a predetermined angle with respect to the swing axis P and a second extension arranged facing the side surface of the first extension.

Abstract: An inertial measurement unit includes: a sensor unit including an inertial sensor, a case accommodating the inertial sensor, and a first fixing part having the case fixed thereto; an elastic member having a first elastic member mainly damping a vibration at a predetermined frequency in a first direction and a second elastic member mainly damping a vibration at a predetermined frequency in a second direction that is different from the first direction; a second fixing part where the sensor unit and the elastic member are arranged; and a fixing member fixing the sensor unit and the elastic member to the second fixing part.

Abstract: According to one embodiment, a sensor includes a sensor element, a housing provided around the sensor element, and a processor. The sensor element includes a base body including first and second base body regions, and first and second sensor parts. The first sensor part is provided in the first base body region, and includes a first sensor movable part. The second sensor part is provided in the second base body region and includes first and second beams. The processor can derive a rotation angle and an angular velocity based on a signal obtained from the first sensor movable part. The processor can detect acceleration and a temperature based on a first resonance frequency of the first beam and a second resonance frequency of the second beam. The processor can correct one of the rotation angle or the angular velocity based on one of the temperature or the acceleration.

Abstract: The present disclosure discloses an acoustic device and a support assembly. The support assembly may include a shell configured to provide a space for accommodating one or more components of the acoustic device. The support assembly may further include an interaction assembly configured to realize an interaction between a user and the acoustic device, wherein the interaction assembly include a first component and one or more second components, in response to receiving an operation of the user, the first component is configured to trigger at least one of the one or more second components to cause the acoustic device to perform a function corresponding to the at least one of the one or more second components.

Abstract: Provided is an inertial sensor module having excellent detection accuracy. The inertial sensor module includes: a first sensor having a first axis, a second axis, and a third axis as detection axes; and a second sensor having accuracy higher than that of the first sensor and having the third axis as a detection axis. The first sensor and the second sensor are disposed on an inner bottom surface which is one plane in a package. The first sensor and the second sensor are sealed by the package in an airtight manner.

Abstract: Pipe section for flow measurements including measuring antennas configured to measure predetermined characteristics of fluid inside the pipe section. The pipe section includes an input end and an output end having a predetermined dimension. The pipe section includes a section having a first cross section in a first direction extending beyond the input and output dimension by a predetermined amount and a cross section in the second direction being perpendicular to the first direction having a dimension B being less than the dimension A in the first direction.

Abstract: A vibration element includes a base and a vibrating arm extending from the base. The vibrating arm includes an arm positioned between the base and a weight. A weight film is disposed on the weight. The weight has a first principal surface and a second principal surface in a front and back relationship with respect to a center plane of the arm. A center of gravity of the weight is located between the first principal surface and the center plane of the arm. A center of gravity of the weight film is located between the second principal surface and the center plane of the arm.

Abstract: The sensor module includes a plurality of inertial measurement units having an angular velocity sensor device, an acceleration sensor device, and a signal processing circuit configured to process an output signal from the angular velocity sensor device and the acceleration sensor device, and an oscillation circuit configured to generate a synchronizing clock which synchronizes the plurality of inertial measurement units. Further, the oscillation circuit is provided to one of the inertial measurement units.

Abstract: A method for compensating sensor tolerances of accelerometers of a vehicle. The method includes following steps: recording of measurement signals of at least three similarly oriented accelerometers, calculation of an acceleration (ab,z) at a reference position in the spatial direction, which corresponds to the orientation of the accelerometers, low-pass filtering of the measurement signals, determination of tolerance parameters (cx, cy, cz) of each sensor via an optimization method with the aid of the calculated acceleration (ab,z) at the reference position, and calculation of the adjusted measurement signals from the recorded measurement signals and the tolerance parameters (cx, cy, cz).

Abstract: A flowpath switch valve is configured for extended service life by spreading the region, of the sliding surfaces of a stator and a rotor, that is subject to wear over the entirety of the sliding surfaces. The stator has fixed stator flowpaths, and the rotor has rotor flowpaths. A flowpath switch valve, depending on the rotor rotation state, realizes connection patterns that include: a first connection pattern wherein a rotor flowpath 241 connects a fixed stator flowpath 31 and a fixed stator flowpath 32; a second connection pattern wherein the rotor flowpath 241 connects the fixed stator flowpath 31 and a fixed stator flowpath 36; a third connection pattern wherein a rotor flowpath 242 connects the fixed stator flowpath 31 and the fixed stator flowpath 32; and a fourth connection pattern wherein the rotor flowpath 242 connects the fixed stator flowpath 31 and the fixed stator flowpath 36.

Abstract: A vibration rectification error correction device includes a reference signal generation circuit configured to output a reference signal, a frequency delta-sigma modulation circuit configured to perform a frequency delta-sigma modulation on the reference signal using a measurement target signal to generate a frequency delta-sigma modulation signal, a first filter which is disposed in a posterior stage of the frequency delta-sigma modulation circuit, and operates in sync with the measurement target signal, and a second filter which is disposed in a posterior stage of the first filter, and operates in sync with a first frequency signal asynchronous with the reference signal.

Abstract: A method of measuring an acceleration using one or more trapped BECs and at least two atomic field modes within those BECs is described. A density distribution of at least one of the one or more BECs is modified by the acceleration, which leads to a change of the field modes' time evolution. The method comprises: selecting two modes that are differently affected by the acceleration; and measuring the acceleration-induced difference; and using the measured acceleration-induced difference to infer the acceleration. Also described is a method of measuring a field gradient using one or more trapped BECs. Each of the trapped BECs has a density distribution, and at least two atomic modes within those BECs, wherein the density distributions of the one or more BECs are modified by the field, which leads to a change of the atomic modes' time evolution.

Abstract: A sensor system. The sensor system includes a rotation rate sensor and a control unit, the rotation rate sensor including a seismic mass and being configured to drive a movement of the seismic mass with the aid of a driving force, the control unit being configured to detect a free fall of the sensor system and to deactivate the driving force in the event of a detection of the free fall. A method for securing a sensor system, in a detection step a free fall of the sensor system being detected by the control unit, and in a securing step the driving force being deactivated by the control unit, is also described.

Abstract: A coring device, comprising an electronic sub communicated with a ground control system and identifying the position of a core taken underground, a supporting arm sub for fixing the coring device, a rotating sub for rotating a mechanical sub to a specified position to carry out coring by rotating, a hydraulically controlled sub for providing power to the rotating sub and the mechanical sub, a mechanical sub for performing pushing, coring, core folding and core length measurement operations, and a core storage barrel sub for storing a taken core, which are sequentially connected. The rotating sub comprises a rotating shaft, a moving sleeve which sleeves the rotating shaft and is in threaded connection with the rotating shaft, and a fixed housing; the rotating shaft and the moving sleeve are arranged inside the fixed housing, two ends of the rotating shaft respectively extend from two ends of the fixed housing.

Abstract: The apparatus for diluting exhaust gas according to an exemplary embodiment of the present invention includes a stagnant air forming unit configured to form stagnant air by decelerating a flow velocity of introduced exhaust gas, an ejector unit connected to a front end of the stagnant air forming unit and configured to discharge the exhaust gas to a front, and a dilution unit coupled to a front end of the ejector unit.

Abstract: A method for dispensing a liquid sample by means of a dispensing apparatus in which it is determined whether a particle condition is satisfied, wherein the determination comprises checking whether at least one target particle present in a liquid of the liquid sample is contained in a monitoring region of the dispensing apparatus, wherein the monitoring region comprises a discharge region and a buffer region, wherein the buffer region is a region from which the at least one target particle is movable into the discharge region during a time delay between the determination of whether the particle condition is satisfied and an output operation of the dispensing apparatus. The method is characterised in that it is determined that the particle condition is satisfied when the at least one target particle is arranged in the buffer region and no target particle is arranged in the discharge region, and that the liquid sample is dispensed onto a target particle carrier if the particle condition is satisfied.

Abstract: A physical quantity sensor includes: a first fixed electrode portion; a first movable electrode portion; a first fixed portion fixed to a substrate; a first support beam having one end coupled to the first fixed portion; a second support beam having one end coupled to the first fixed portion; and a first coupling portion coupling the other end of the first support beam and the other end of the second support beam to the first movable electrode portion. In a plan view in a third direction orthogonal to the substrate, the first movable electrode portion and the first fixed portion are disposed along a first direction, the first support beam and the second support beam are disposed along a second direction, and the first coupling portion includes a first portion disposed along the second direction side by side with the first support beam and the second support beam, and a second portion coupled to the first portion and the first movable electrode portion and disposed along the first direction.

Abstract: Methods and systems are provided for an oil sensor. In one example, the oil sensor is a system for metallic debris detection, comprising a detection circuit including a first inductor and a second inductor, the second inductor shielded from the external environment, wherein the detection circuit generates an output based on a difference between a first voltage of the first inductor and a second voltage of the second inductor, where the difference indicates a presence of metallic debris within oil.

Abstract: An inertial sensor device includes a first interface, a second sensor, a second interface, a host interface, and a processing circuit. The first interface is an interface for a first sensor configured to detect a first physical quantity in a first detection axis, a second physical quantity in a second detection axis, and a third physical quantity in a third detection axis. The second sensor is configured to detect the physical quantity in the third detection axis as a high-accuracy third physical quantity with a higher accuracy than the first sensor. The processing circuit is configured to output the first physical quantity and the second physical quantity to a host via the host interface, and output the high-accuracy third physical quantity instead of the third physical quantity to the host via the host interface.