The present disclosure relates to an inertia measurement module for an unmanned aircraft, which comprises a housing assembly, a sensing assembly and a vibration damper. The vibration damper comprises a first vibration-attenuation cushion; and the sensing assembly comprises a first circuit board, a second circuit board and a flexible signal line for connecting the first circuit board and the second circuit board. An inertia sensor is fixed on the second circuit board, and the first circuit board is fixed on the housing assembly. The inertia measurement module further comprises a weight block, and the second circuit board, the weight block, the first vibration-attenuation cushion and the first circuit board are bonded together. The present disclosure greatly reduces the influence of the operational vibration frequency of the unmanned aircraft on the inertia sensor and improves the measurement stability of the inertia sensor.

The invention provides a sealing assembly that includes an elastic seal lip having a movable part. The seal lip is configured to be attached to a first part of a machine and to be in sliding contact with a second part of the machine. It is proposed that at least one vibration sensor is fixed to the movable part of the seal lip.

Disclosed is an integrated acceleration, speed and vibration sensor. The sensor includes a housing, a base, a sensing and signal processing circuit, a current loop circuit, an anti-surge PTC and an aviation plug. The housing is mounted on the base. The sensing and signal processing circuit and the current loop circuit are used to fabricate a PCB circuit board, and then the PCB circuit board is mounted in the housing. A power supply and signal line is connected to the aviation plug. An M6 threaded hole is formed in a bottom of the housing of the sensor and is used to connect with an object to be detected. A power supply is negatively connected to one end of a varistor and the other end of the varistor is connected to the housing as the anti-surge PTC to play a protective role. The M6 threaded hole formed in the bottom of the housing of the sensor is used to connect with the object to be detected and improve the stability. At the same time, after the PCB circuit board is mounted, adhesive filling is performed to improve the vibration resistance.

A sensor module includes: a printed circuit board having a first recessed portion formed at a first side, a second recessed portion formed at a second side facing the first side, a third recessed portion formed at a third side, and a fourth recessed portion formed at a fourth side facing the third side; a metal cap including convex portions each bonded to a respective one of the first to fourth recessed portions; and a first inertial sensor and a second inertial sensor that are provided at a main surface of the printed circuit board. The first inertial sensor and the second inertial sensor are disposed outside a region surrounded by a line connecting both ends of the first recessed portion and the second recessed portion and outside a region surrounded by a line connecting both ends of the third recessed portion and the fourth recessed portion.

An inertial sensor includes a substrate, a first supporting beam being a first rotation axis extending along a first direction, a first movable member swingable around the first rotation axis, a second supporting beam being a second rotation axis extending along a second direction crossing the first direction, a second movable member swingable around the second rotation axis, a third rotation axis extending along a second direction, a third movable member swingable around the third rotation axis, and a projection, wherein the second and third movable members are line-symmetrically placed with a center line of the first movable member along the second direction as an axis of symmetry, a center of gravity of the second movable member is closer to the center line than the second supporting beam, and a center of gravity of the third movable member is closer to the center line than the third supporting beam.

A multi-axis, single mass acceleration sensor includes a three-dimensional frame, a test mass, a plurality of transducers, and a plurality of struts. The test mass may have three principal axes disposed within and spaced apart from the frame. The transducers are mechanically coupled to the frame. The struts are configured to couple to the central mass at each of the three principal axes, respectively, and to couple with respective sets of the transducers, thereby suspending the test mass within the frame. The sensor is thus responsive to translational motion in multiple independent directions and to rotational motion about multiple independent axes.

A sensor unit includes acceleration sensors as physical quantity sensors, a control IC as a processor electrically coupled to the acceleration sensors, a circuit board as a board on which the acceleration sensors and the control IC are installed, and a container accommodating the circuit board. The acceleration sensors and the control IC are disposed on the circuit board such that the acceleration sensors and the control IC do not overlap each other in a plan view.

A terminal insertion quality monitoring system includes an acceleration sensor disposed on a gripper of a terminal insertion equipment and configured to detect a dynamic acceleration of the gripper while using the gripper to insert a terminal into a housing, a control parameter acquisition device configured to acquire a plurality of control parameters of the terminal insertion equipment while inserting the terminal into the housing, and an artificial intelligence system adapted to classify the detected dynamic acceleration and the acquired control parameters into a plurality of different insertion modes by analyzing and calculating the detected dynamic acceleration and the acquired control parameters. The different insertion modes have a plurality of different grades of terminal insertion quality. The artificial intelligence system is configured to monitor a terminal insertion quality of the terminal according to the insertion mode to which the detected dynamic acceleration and the acquired control parameters correspond.

An inertia sensor apparatus includes a first sensor module including a first inertia sensor that outputs a first signal relating to a plurality of first detection axes and a first correction circuit that generates a first correction signal by correcting the first signal in such a way that the plurality of first detection axes are perpendicular to each other, a second sensor module including a second inertia sensor that outputs a second signal relating to a plurality of second detection axes and a second correction circuit that generates a second correction signal by correcting the second signal in such a way that the plurality of second detection axes are perpendicular to each other, a matching processor that generates a first matching signal by applying a first correction coefficient that causes the plurality of first detection axes to match with the plurality of second detection axes to the first correction signal, and a combining processor that combines the first matching signal with the second correction signal and outputs the combined signal.

A combined MicroElectroMechanical structure (MEMS) includes a first piezoelectric membrane having one or more first electrodes, the first piezoelectric membrane being affixed between a first holder and a second holder; and a second piezoelectric membrane having an inertial mass and one or more second electrodes, the second piezoelectric membrane being affixed between the second holder and a third holder.