摘要:
Apparatus is disclosed for monitoring, measuring and/or estimating metrics and/or combinations of the metrics associated with Quality of a dynamic activity of a body or body part of a vertebral mammal. The apparatus includes at least one inertial sensor for measuring relative to a first frame of reference acceleration and/or rotation data indicative of the Quality of a dynamic activity and for providing the acceleration and/or rotation data. The apparatus also includes a memory device adapted for storing the acceleration and/or rotation data, and a processor adapted for processing the acceleration and/or rotation data to evaluate one or more biomechanical metrics associated with Quality of the dynamic activity that correlates to the data. The processor may be configured to execute at least one algorithm for evaluating the one or more biomechanical metrics associated with quality of the dynamic activity. A method for monitoring, measuring and/or estimating metrics and/or combinations of the metrics associated with Quality of a dynamic activity of a body or body part of a vertebral mammal is also disclosed.
摘要:
(Object) To provide a sensor device and an electronic apparatus by which downsizing and a reduction in costs can be achieved. (Solving Means) A sensor device according to an embodiment of the present technology includes a sensor element and a semiconductor element. The semiconductor element includes a first surface, a second surface, and a via-hole. The first surface includes a first terminal on which the sensor element is mounted and is an inactive surface. The second surface incudes a second terminal for external connection and is an active surface. The via-hole electrically connects the first surface and the second surface to each other.
摘要:
A present invention relates to a combined accelerometer and gyroscope system including a combined accelerometer and gyroscope for maintaining vibration of a mass body at a constant amplitude using an applied drive voltage, and detecting vibration signals in directions of an acceleration axis and an angular velocity axis. An acceleration signal obtainment unit obtains the vibration signal in the direction of the acceleration axis. An amplitude control unit outputs an acceleration control signal using the vibration signal. An acceleration driving input unit receives a voltage signal from the amplitude control unit and applies the voltage signal to the combined accelerometer and gyroscope. An angular velocity signal obtainment unit obtains the vibration signal in the direction of the angular velocity axis. A force balance control unit outputs an angular velocity control signal using the vibration signal received from the angular velocity signal obtainment unit. An angular velocity driving input unit receives a voltage signal received from the force balance control unit and applies the voltage signal to the combined accelerometer and gyroscope.
摘要:
Angular rate sensor and method in which the parameters of a circuit which provides drive signals and processes signals from a sensing element are configured electronically by a programmable memory. Being configured in this manner, the circuit is extremely versatile and can be used with different types of sensing elements.
摘要:
Quadrature error occurs in Corolis based vibrating rate sensors because of manufacturing flaws that permit the sensing element to oscillate either linearly along or angularly about an axis that is not orthogonal to the output axis. This create an oscillation along or about the output axis that is a component of the sensing element's vibration acceleration. This output axis oscillation is in phase with the driven acceleration of the sensing element and is called quadrature error since it is ninety degrees out of phase with the angular rate induced Coriolis acceleration. Rather than applying forces that reorient the axis of the driven vibration to be orthogonal to the output axis to eliminate the output axis oscillation, the present invention applies sinusoidal forces to the sensing element by means of a quadrature servo to cancel the output oscillation. In order to avoid the phase uncertainty associated with electronic modulation, the quadrature servo feeds back a DC signal that is modulated mechanically by means of an interdigitated variable area electrostatic forcer.
摘要:
A gyroscopic apparatus contains two gyro sensors having the same structure. The two gyro sensors are arranged on first and second principal surfaces, respectively, of a mounting base so that the gyro sensors have a 180-degree rotation symmetry about a virtual rotation axis penetrating the mounting base parallel thereto in the same direction as rotation detecting axes. The outputs of the two gyro sensors are added, and the sum is output. Thus, the output of the gyroscopic apparatus becomes less susceptible to impact from a specific direction, and a high detection accuracy can be maintained.
摘要:
A new two-axis accelerometer comprising an electric motor-driven rotating body that is distinct from the rotor motor and liked to latter via a flexure zone. The resulting rotating body/flexure zone combination may be of either of two types. In a first type the rotating mass is a concentrated mass and the flexure zone permits the rotating body to perform a transversal parallel shift. In a second type the rotating body is an inertia rotor and the flexure zone is an extension of the rotor shaft that embodies a flexible portion. In either type the rotating body/flexure zone combination has two degrees of flexing freedom with two different flexure coefficients in two mutually perpendicular directions both normal to the electric motor shaft. The accelerometer further comprises a deflector shaft coaxial with the rotor shaft and extending beyond the rotating body in a direction away from the electric motor, and in association with said deflector shaft electro-optical measuring means and processor means for measuring linear acceleration components in said two mutually perpendicular directions. In one of its aspects the two axis accelerometer in accordance with the invention measures only two perpendicular components of the acceleration of a body to which it is attached. By another aspect the two axis accelerometer according to the invention is a multisensor being at one and the same time a two-axis angular rate gyroscope and a two axis accelerometer. By yet another aspect of the invention there is provided a multisensor inertial measurement unit (MIMU) serving for the simultaneous measurement of three angular velocity and three linear acceleration components.
摘要:
A Coriolis rate sensor for determining both angular rate and linear acceleration with respect to three orthogonal axes. A first embodiment of the rate sensor (10) includes three pairs of accelerometers (26, 28 and 30) mounted on counter-rotating frame members (20, 22). The accelerometers are mounted with their sensitive axes antiparallel with each other, forming an acute angle with the common axis (40) about which the upper and lower frame members are counter-rotated back and forth in a dither motion. The upper and lower frame members are connected to a baseplate (12) by flex links (32), which are aligned radially about the axis. The flex links provide a relatively rigid support (in compression) between the frame members and the centrally disposed baseplate, yet readily permit counter-rotation of the two frame members. A link (56) prevents all but relative rotational movement between the frame members and baseplate. A pair of electromagnetic coils (42) and pole pieces (50) provide a sinusoidal driving force to counter-rotate the upper and lower frame members relative to each other to ensure that the upper and lower frame members are directly coupled to each other and to the baseplate. In a second embodiment of the rate sensor (100), eight accelerometers (102, 104, 106 and 108) are mounted with two pairs on an upper counter-rotating member and two pairs on a lower counter-rotating member.