Abstract: A positional and postural accuracy of stereo cameras 30 is maintained. A camera support structure (100) includes a support frame (130) that is mounted on a housing (110) of a head-mounted display 1 and supports stereo cameras (30), and at least one rubber member (40) that is interposed between the housing (110) and the support frame (130) and has at least a portion elastically deformable between the housing (110) and the support frame (130) upon deformation or displacement of the support frame (130).

Abstract: A semiconductor pressure sensor of the invention, includes: a base body (1) including: a lead frame (4) having a first surface and a second surface; and a support (5) that supports the lead frame (4) and is made of a resin; a pressure sensor chip (2) provided on the first surface of the lead frame (4); and a controller (3) that is provided on the second surface of the lead frame (4), is implanted in the support (5), is formed in the shape having a plurality of surfaces, includes a stress relief layer (32, 33, 34, 35, 36) that is formed on at least one of the plurality of surfaces and has a Young's modulus lower than that of the support (5), and receives a sensor signal output from the pressure sensor chip (2) aid thereby outputs a pressure detection, the pressure sensor chip (2) at least partially overlapping the controller (3) in plan view.

Abstract: A micro feedback-chamber sensor comprises: a semiconductor base having a sensing circuit; a bonding structure layer disposed on the semiconductor base; and a sensing member chip having a low-resistance semiconductor body, a first end portion and a second end portion. The semiconductor body has free-standing Si posts, the first end portion is formed with a sensing member structure, the second end portion is connected to the semiconductor base through the bonding structure layer, and a micro feedback-chamber structure is formed between the sensing member structure, the semiconductor base and the semiconductor body. The sensing member structure is electrically connected to the sensing circuit through the free-standing Si posts. The sensing member structure and the micro feedback-chamber structure collaboratively react to an externally inputted physical signal to generate a sensing signal outputted to the sensing circuit. A method of manufacturing the micro feedback-chamber sensor is also provided.

Abstract: Systems and methods for potted shock isolation are provided. In once embodiment a shock isolation system comprises an isolator comprising an outer ring for mounting to an external housing, and an inner ring connected to the outer ring via an isolating element; and an inertial sensing assembly comprising: at least one circuit board secured to the inner ring of the isolator, the at least one circuit board further comprising a triad of gyroscopes and a triad of accelerometers; and a low durometer highly dampened supporting material encapsulating a first surface of the at least one circuit board.

Abstract: In order to provide a technology capable of suppressing degradation of measurement accuracy due to fluctuation of detection sensitivity of an MEMS by suppressing fluctuation in natural frequency of the MEMS caused by a stress, first, fixed portions 3a to 3d are displaced outward in a y-direction of a semiconductor substrate 2 by deformation of the semiconductor substrate 2. Since a movable body 5 is disposed in a state of floating above the semiconductor substrate 2, it is not affected and displaced by the deformation of the semiconductor substrate 2. Therefore, a tensile stress (+?1) occurs in the beam 4a and a compressive stress (??2) occurs in the beam 4b. At this time, in terms of a spring system made by combining the beam 4a and the beam 4b, increase in spring constant due to the tensile stress acting on the beam 4a and decrease in spring constant due to the compressive stress acting on the beam 4b are offset against each other.

Abstract: A sensor component having a housing and a sensor chip situated in it. The sensor chip is connected mechanically to the housing via at least one elastomer element. In addition, the sensor chip is also connected electrically to the housing via the at least one elastomer element.

Abstract: A damping device for a micromechanical sensor device, having at least one first intermediate layer having at least two sections, a second section being situated around a first section, a lateral distance being provided between the first and the second section, and an elastic device being provided between the first section and the second section as an integral part of the first intermediate layer.

Abstract: This invention provides a shock mitigation means that attenuates the high frequency energy transmitted to the floating element of an inertial measurement unit (IMU) device in a cannon launched guided projectile or cannon launched munition improving the ability of the IMU to survive the extreme forces of such cannon launched environment. The invention utilizes a crushable foam mitigator located in the IMU device's housing to interfere and apply a compressive force to the floating element of the IMU device, plus a rubber pad attenuator element placed above the foam mitigator to further tailor the transmission of shock energy to the floating element in the IMU device.

Abstract: Disclosed herein are systems and methods of angular rate and position measurement that combine a small footprint with hardening and isolation technologies that allow it to function in acceleration, angular rate, noise and vibration environments that cause other gyroscopes to either fail or to produce erroneous outputs. An example embodiment contains a triad of accelerometers, a triad of gyroscopes, analog and digital ancillary electronics and a processor housed within a housing which is also filled with vibration reducing encapsulating compound. The disclosed systems and methods of angular rate and position measurement are capable of measuring and correcting internal errors and perturbations caused by the longitudinal and angular accelerations and temperature excursions of aerospace vehicles, isolating the gyroscope elements from the effects of acoustic noise and vibration, and accurately measuring the relatively small pitch and yaw oscillations of the vehicle in its flight path trajectory.

Abstract: A mounting and suspension system for mounting non-contact sliding measurement devices to the side of objects that slide on snow or ice like skis, snowboards, sleds, luges, and ice skates. A base component permanently attached to the sliding object allows a quick disconnect of the rest of the device. A linkage component permits the retraction of the measurement device relative to the sliding object in such a way that the measurement device remains aligned with the surface being measured while minimizing lateral displacement and fully retracted vertical height such that accurate measurement is obtained at any angle of sliding object relative to the surface of snow or ice. A bias device keeps the measurement device in firm contact with the surface without interfering with the use of the sliding object. A safety device prevents injury to user and damage to measurement device in case of impact with an external obstacle or fall.

Abstract: The present invention generally relates to a snubbing or damping system for reducing a shock impact on an isolated body within a shock sensitive device, which may take the form of an inertial measurement unit (IMU). The shock sensitive device includes a housing with an inertial body suspended in an isolated manner within the housing and engaged with the snubbing system. By way of example, the inertial body may take the form of an inertial sensor assembly. Further, the snubbing system may take the form of a plastically deformable snubbing mechanism positioned between the housing and the inertial body along a line of action of the inertial body during an acceleration (e.g. shock) event.

Abstract: A premold housing for accommodating a chip structure includes a first part of the housing which is connected to the chip structure as well as connected in an elastically deflectable manner to an additional part of the housing which is fastened to the support structure bearing the entire housing. A mechanism is provided for damping the deflection of the first part of the housing which is connected to the chip structure.

Abstract: An acceleration sensor, which has realized such a high impact-resistance that a weight bottom surface of an acceleration sensor element does not directly collide with an inner bottom plate of a protection case made of ceramic, glass or silicon to avoid edges and corners of the weight bottom surface of the acceleration sensor element chipping, even when an excessive acceleration or impact is applied to the acceleration sensor. The acceleration sensor comprises the acceleration sensor element having in a center a weight that works as a pendulum when acceleration is applied, and the protection case housing the acceleration sensor element. The inner bottom plate of the protection case works as a regulation plate to prevent the weight from excessively swing downwards. An impact buffer material of a metal layer or a resin layer is provided on the weight bottom surface or the inner bottom plate of the protection case.

Abstract: The angular velocity sensor includes a container, a sensing element in the container and a viscous fluid between the container and the sensing element. The sensing element is supported by the viscous fluid such as an ER fluid or an MR fluid. The angular velocity sensor detects acceleration of the body in which the angular velocity sensor is installed. The angular velocity sensor controls the viscosity of the viscous fluid depending on the acceleration of a body, by changing a voltage applied to the viscous fluid.

Abstract: An impact resistant speed sensing object having an inner body with a processor and at least one speed detecting sensors adapted to engage the inner body and adapted to interact with the processor for determining the speed of the impact resistant speed sensing object. The impact resistant speed sensing object further includes an impact resistant housing having apertures adapted to receive the inner body and the speed detecting sensor. The impact resistant speed sensing object has an aperture adapted to receive the impact resistant housing with the inner body and speed detecting sensor.

Abstract: A vibration reducing device, including an inertial mass actuator adapted to be mounted on a vibration damping object, that applies a vibration damping force on the vibration damping object, the vibration damping force being a reactive force generated due to displacement of an inertial mass. A vibration state detector detects the vibration state of the inertial mass. A controller is connected to the inertial mass actuator and vibration state detector. The controller determines the displacement and velocity of the vibration damping object at a part where the inertial mass actuator is mounted, and the displacement and velocity of the inertial mass, based on the vibration state of the inertial mass. The vibration damping force is controlled based on the determined displacement and velocity of the vibration damping object at the part where the inertial mass actuator is mounted, and the displacement and velocity of the inertial mass.

Abstract: Disclosed is an accelerometer for measuring seismic data. The accelerometer includes a proof mass that is resiliently coupled to a support structure by folded beams, S-shaped balanced beams, straight beams, and/or folded beams with resonance damping. The support structure further includes travel stops for limiting transverse motion of the proof mass.

Abstract: A vibrating gyroscope includes a vibrator. The vibrator is installed on a work plate via supporting members. A work cover is installed on the work plate so as to cover the vibrator. The vibrator, the work plate, and the work cover are installed on one main surface of a circuit board. Both end portions of the work cover and both end portions of the circuit board are surrounded by two cushion members. The work cover, the circuit board, and the cushion members are contained in a case. Though bottom faces and top faces of the cushion members respectively touch a surface of a packing on a bottom board of the case and an inside face of a case body, the work cover and the circuit board do not touch the case.

Abstract: An acceleration sensor is provided with damping means on an upper surface and/or an lower surface of a movable portion of a sensor body and/or opposite regions surrounded by the movable portion and a rim of the sensor body in order to provide damping of a vibration to the movable portion of the sensor body. The damping means includes a material having a large mechanical damping constant, for example, a plastic, a gel, an inorganic material, and micro capsules. In a fabrication process of the acceleration sensor, a supporting film is provided on the movable portion of the sensor body, the damping material is provided on the supporting film and the movable portion of the sensor body is subjected to etching so as to form a weight and a diaphragm.

Abstract: In an angular velocity sensor device, a vibration isolation member, a sensor support plate on which a tuning fork unit functioning as a vibrating type angular velocity sensor is mounted, a collar, a circuit board on which a circuit pattern is formed for driving the tuning fork unit and processing a signal output therefrom are provided by having a plurality of pins inserted, in this order, which extend from the bottom surface of a concave-shaped case. The circuit pattern and the tuning fork unit are connected with each other via a flexible printed circuit board. These components are accommodated inside the concave-shaped case. A cover is fitted in an open top of the case so as to completely seal the case. The angular velocity sensor device with the aforementioned arrangement does not suffer variation in the operational properties due to disturbance vibration and deterioration in the vibration isolation property.

Abstract: An acceleration overload protection mechanism for use with a sensor unit. The sensor unit is generally defined by a sensor element or elements (i.e., proof mass, flexures, etc.) that are movable in relation to a sensor frame. The overload protection mechanism includes at least one arresting plate. The arresting plate includes a plate frame and an arresting element that are elastically coupled to one another to permit relative movement therebetween. The plate frame of the overload protection mechanism is placed in fixed alignment with the sensor frame to place the arresting element in spaced relation with the sensor element of the sensor unit. The arresting element and sensor element may move relative to one another to allow the arresting element to move to a position proximate the sensor element to limit the range of motion of the sensor element when the sensor unit is subject to an acceleration overload.

Abstract: A sensor for measuring a physical parameter is described having a frame, at least one support which is resiliently flexible under the influence of a physical parameter and which is integral with the frame, and at least one resonator integral with the support for supplying a signal representative of the physical parameter in response to flection of the support, the sensor also having an abutment and counter abutment limiting the flextion of the support, in particular before it is fixed to the frame. This sensor has applications in the measurement of a physical parameter such as, for example, acceleration.

Abstract: A measurement sensor is disclosed having a frame, a support which is resiliently flexible under the influence of a physical parameter and is fixed to the frame, a mass connected to the support, a housing which is formed by the frame and surrounds the mass to dampen movement of the mass and its support, a detection device for supplying a signal representative of the physical parameter in response to flection of the support. The sensor includes an assembly for precisely positioning the mass in the housing. The sensor has applications in the measurement of a physical parameter such as, for example, acceleration.

Abstract: The fixed end of an acceleration detection beam of a semiconductor acceleration detecting apparatus is mounted onto a board through a supporting base. A weight for increasing the sensitivity to acceleration is disposed on the free end of the acceleration detection beam. A limit stop for limiting excessive displacement of the weight in two directions surrounds part of the weight. Therefore, the displacement of the weight can be controlled with a high degree of accuracy. Resistance to impact is also improved.

Abstract: An improved accelerometer of the type that comprises a paddle (30), a support (32), and suspension means (34) for suspending the paddle from the support, such that the paddle can move along a sensing axis. The support includes an unclamped portion (42) to which the suspension means is attached, and a clamped portion (40) through which the support is mounted. The invention provides restraining means (72, 100, 120, 132, 134, 176, 196, 206) separate from the clamped portion of the support, for limiting the travel of the unclamped portion in directions normal to the sensing axis, for example, along the hinge axis. The result is an accelerometer able to withstand higher cross axis shocks without failure.

Abstract: A load cell suitable for the measurement of discrete events having an output substantially free of resonant frequencies is disclosed. The load cell includes a visco-elastic polymer bonded thereto as well as accompanying control circuitry for maintaining the visco-elastic at a constant temperature to stabilize the load cell output in the event ambient temperature varies.

Abstract: An angular rate sensor has a tuning fork structure composed of vibratory components. The vibratory components include piezoelectric drive and detection elements which are joined together into a tuning fork configuration, the drive and detection elements lying in respective orthogonal planes. Leads are electrically connected to the drive and detection elements, and lead terminals are electrically connected to the leads, respectively. The vibratory components are covered with a coating which is of a material having a lower elasticity than the elasticities of the vibratory components. The coating on the vibratory components effectively reduces the propagation of unwanted vibrations, thereby reducing output signal drifts.

Abstract: A method of measuring acoustic vibrations affecting the fluid in a well at a plurality of points which are angularly distributed around the axis of the well and which are in the proximity of the wall of the well by means of an apparatus including an elongate body which is rotatable about its longitudinal axis and having at least one acoustic vibration detector disposed at the end of an arm which is hinged to the body. The arm is moved away from the body so as to place its end at a determined distance from the wall of the well, and the arm is then caused to rotate continuously about the axis while simultaneously recording the signals produced by the detector. The method is suitable for use in a relief well to locate a well which is blowing out.

Abstract: The transducer is directly associated with a fluid-type damper having a cover member and a cylinder member that undergo telescopic movement relative to each other in response to relative movement between vehicle components interconnected by the damper. In the preferred embodiments, both a passive electrical coil and a magnet are mounted upon the cover member, in fixed relationship to each other. Relative axial telescoping movement between the cover member and the cylinder member of the damper changes the flux field of the magnet and induces in the coil a voltage which is proportional to the relative velocity between the damper members and thus between the vehicle components interconnected by the damper. In an alternative embodiment, the magnet is mounted upon an end portion of the damper cylinder member.

Abstract: The acceleration sensor consists substantially of a leaf spring (12) with an eddy current disk (13), which is arranged at its free end as an inertia mass, and an eddy current brake with magnets which are polarized in opposite directions (16, 17), and a flux conducting piece consisting of low reluctance iron. The latter serves the purpose of oscillation damping of the spring-mass system formed by the leaf spring (12) and eddy current disk (13). By means of a sensor magnet (19) and a Hall element (20), the lift of the inertia mass is transformed into output voltage which is proportional to the acceleration. Such an acceleration sensor is installed in a motor vehicle, for example, and serves to trigger safety devices such as belt tighteners. It has the advantage that the frequency response is only slightly dependent upon temperature and is very simply and compactly constructed.

Abstract: An accelerometer includes a flexible beam member, a support and mounting holes. An inertial mass is carried by the beam member and is spaced from the mounting holes. A spring allows the beam to pivotably move in a plane transverse to a first direction. The beam member is resiliently deformable in the first direction and permits relative motion between the inertial mass and the support in response to acceleration. The beam member is also able to move relative to the support in the transverse plane because of the action of the spring to recude the likelihood of damage caused by shock accelerations.

Abstract: A displacement transducer for accurately detecting both linear and angular displacements and velocities, between objects moving relative to one another. The displacement transducer is structured to accurately operate under large gravitational accelerations and vibration extremes as well as minimize the adverse effects of environmental degradation upon the displacement transducer's performance.

Abstract: A resilient drive for a fuel injection pump governor comprising a resilient coupling connecting the governor speed sensing mechanism to the governor shaft. In a preferred embodiment, the governor flyweight assembly is rotatably mounted with respect to the governor shaft and is connected thereto by a resilient coupling which permits the limited momentary rotation of the flyweight assembly with respect to the shaft to dampen torsional vibrations.

Abstract: A vibration absorber which comprises a damper provided between the flyweights and the shifter of a centrifugal governor for absorbing or lessening axial and/or radial vibrations produced in the flyweights. The absorber has a very simple construction, of which manufacture, mounting and maintenance can be carried out with facility. Also, it is free from resonance of the damper and its neighboring parts.

Abstract: A vibration absorber which comprises a damper provided between the flyweights and the shifter of a centrifugal governor for absorbing or lessening axial and/or radial vibrations produced in the flyweights. The absorber has a very simple construction, of which manufacture, mounting and maintenance can be carried out with facility. Also, it is free from resonance of the damper and its neighboring parts.