70results about "Acceleration measurement using gyroscopes" patented technology

The invention discloses a method for installing and adjusting a double-reading-head photoelectric encoder on a gyro accelerometer, which comprises the following steps of: initially installing a coded disc base and an optical component, measuring the size, adjusting a grating gap, reinstalling the optical component, installing the coded disc component, testing a signal, fastening the optical component and the coded disc component, installing a receiving plate and arranging a wire harness. The oscilloscope is used for observing sine and cosine signals and a zero position, the industrial personal computer is used for reading an angle value given by the signal processing and output circuit, the installation accuracy of the double-reading-head photoelectric encoder is judged, and the purpose that the double-reading-head photoelectric encoder is installed on the gyro accelerometer in a high-precision mode is achieved. The problem of high-precision installation of the double-reading-head photoelectric encoder in the limited space of the gyro accelerometer is solved, the installation and adjustment operation is simpler and more efficient, particularly, high-precision optical methods such as a multi-face prism and an autocollimator are not needed, and the method is more suitable for completing installation and adjustment or maintenance in off-line scenes such as a user site.

The invention discloses a gyro accelerometer dynamic error modeling and calibration method considering angular motion of a base, and belongs to the field of dynamics and control. The implementation method comprises the following steps: establishing kinematics and dynamics equations of the PIGA under the triaxial angular motion of the base, and deducing a complete error model comprising a static error term, a dynamic error term and a nonlinear error term; constructing a kinetic equation including inertia tensor, a moment balance equation and servo loop influence; quantitatively analyzing the influence of the angular motion parameters of the base on PIGA output errors; based on three-axis turntable experimental design, dynamic response of each axis of the PIGA is excited through single-axis, double-axis and three-axis angular velocity input, and error model coefficients are separated and calibrated; error model parameters are calibrated by adopting a mode of combining a least square method and other data fitting algorithms; angular velocity and angular acceleration terms are separated based on direction cosine matrix transformation, and error coefficient aliasing is avoided; dynamic response data are fitted through a least square method, and all error coefficients are calibrated at a time.

Disclosed herein is an attack detection device for detecting an attack targeting a gyroscope. The attack detection device includes: a data collection unit configured to receive measurement values from an accelerometer and the gyroscope; and an attack detection unit configured to estimate an angular velocity using the measurement value from the accelerometer, and to detect an attack by comparing the estimated angular velocity to an angular velocity measured by the gyroscope.

A mount security detection method for an in-vehicle information capture device having at least one acceleration sensor to gather acceleration data, and comparing a sample of the acceleration data for

A system and methods for monitoring and evaluating the performance of a lawn-care technician. A Technician Performance Module (TPM) is affixed to or embedded in a device or apparatus used by the technician, such as a sprayer or a spreader. The TPM comprises a plurality of sensors (e.g., GPS, gyroscope, accelerometer, compass, pedometer) which collect, store, and / or transmit an assortment of data as described below. The data may be transmitted wirelessly to a control box, which may be located in a nearby vehicle, such as a truck used by the technician at the site of the lawn-care services being provided. The data also may be transmitted wireless to a cellular or wireless gateway for transmission to system servers for storage and analysis.

This wrist-wearable electronic device may comprise: a sensor; communication circuitry; a display; a memory storing instructions; and at least one processor including processing circuitry. The instructions, when executed individually or collectively by the at least one processor, may cause the wrist-wearable electronic device to: while a first screen is displayed, acquire information related to an angle between the wrist-wearable electronic device and a finger-wearable electronic device; display a second screen on the basis of user input information being received from the finger-wearable electronic device and the angle being within a first angle range; and display a third screen on the basis of user input information being received from the finger-wearable electronic device and the angle being within a second angle range.

The invention discloses a building talkback intelligent emergency safety center system based on multi-mode perception. The building talkback intelligent emergency safety center system comprises a perception layer, a data processing layer, a decision response layer and a collaboration layer. According to the invention, an active security and protection mechanism integrating real-time monitoring, second-level data processing, dynamic decision making and cross-domain linkage is constructed, so that rapid emergency response within one minute is realized, access control locking can be triggered within 10 seconds in a high-risk scene, alarm pushing and linkage of 110 and medical resources are realized, and the emergency handling efficiency is effectively improved; through multi-mode perception fusion and AI cross validation, environment interference and real risks are effectively distinguished, the false alarm rate is effectively reduced, and the recognition accuracy of events such as falling down and invasion of the old is remarkably improved; and the intercom system is used as a core to seamlessly integrate the elevator, the gas valve and other terminals, data intercommunication and co-processing with community medical treatment, security and other resources are realized, information islands are broken, and the comprehensive security cost of the community is reduced.

Disclosed is an image storage device which can be mounted on a vehicle and which captures and stores images around the vehicle. The image storage device according to the present disclosure comprises: a photographing unit that photographs and acquires a real-time driving image of a vehicle; an accident prediction unit that analyzes the real-time traveling image using a pre-learned accident detection artificial intelligence model and predicts the possibility of an accident occurring in the vehicle; a storage unit that, if it is determined that there is a possibility of occurrence of the accident, stores a traveling image including a predetermined period of time before and after an accident detection time based on the accident detection time; the communication part is used for sending the driving images in the preset time period to a loss ratio judgment server, and the accident detection artificial intelligence model is a model which is trained by utilizing training data marked with accident images and normal driving images and through a supervised learning mode.

The invention relates to a method and device for recognizing road collapse based on mobile phone navigation data, and belongs to the technical field of road safety monitoring, and the method comprises the steps: monitoring the driving speed of a target vehicle on an expressway based on the positioning data of a mobile phone in the target vehicle; if it is monitored that the running speed of the target vehicle is changed from the first vehicle speed to the second vehicle speed within the preset time, it is determined that running abnormity occurs in the target vehicle; under the condition that the target vehicle is abnormal in driving, the collision acceleration vector direction and the driving acceleration of the target vehicle when the vehicle speed changes are obtained based on the IMU data of the mobile phone, and whether the abnormal driving of the target vehicle is collapse and falling or not is judged based on the collision acceleration vector direction and the driving acceleration; and if the driving abnormity of the target vehicle is collapse and falling, determining that the road surface collapse occurs on the expressway, thereby facilitating efficient, accurate and low-cost recognition of the road surface collapse state.

To provide an inertial sensor module that has excellent detection accuracy.SOLUTION: An inertial sensor module 1 comprises: a first sensor 100 that has a first axis, a second axis, and a third axis as detection axes; and a second sensor 200 that has higher accuracy than the first sensor 100 and has the third axis as a detection axis. The first sensor 100 and the second sensor 200 are arranged on an inner bottom surface 2a that is one plane in a package 2, and the first sensor 100 and the second sensor 200 are hermetically sealed by the package 2.SELECTED DRAWING: Figure 1

This electronic device comprises: a memory for storing instructions; a communication interface for connecting to a terminal device; a display; and at least one processor including processing circuitry, wherein the instructions, when executed individually or collectively by the at least one processor, control the display to display a screen including a plurality of objects and a pointer user interface (UI), receive, through the communication interface, touch data from the terminal device operating in a first mode or motion data from the terminal device operating in a second mode, perform a function corresponding to the touch data when the touch data is received, and control the display so that the pointer UI is moved on the basis of the motion data when the motion data is received, and the terminal device operates in the second mode on the basis of a pre-configured event.

A corner flow accelerometer device for reduced gravity applications comprises a capillary tube, wherein the capillary tube is partially filled with a capillary fluid, and wherein the capillary tube includes at least one corner configured to enhance capillary flow. A corner flow accelerometer device for reduced gravity applications comprises a hollow square prism comprising a capillary tube, wherein the square prism is partially filled with a capillary fluid comprising silicone oil, and wherein the square prism is anchored to a weight inside a gyroscope body. A gravity monitoring method comprises providing the corner flow accelerometer device as describe above, measuring a fluid height or meniscus curvature due to capillary flow, calculating a dimensionless Bond number based on the measured fluid height or meniscus curvature, wherein the dimensionless Bond number comprises a ratio between gravitational and surface forces, and calculating a gravitational force based the Bond number.

The application relates to the technical field of inertial instrument testing, and particularly discloses an accelerometer testing device with magnetic shielding and temperature control functions, which comprises a base, an upper cover assembly and a lower cover assembly. The measured accelerometer is installed on the upper end connecting platform of the base, and the lower end of the base is provided with four U-shaped holes for fixed connection with a testing table. The upper cover assembly comprises an upper magnetic shielding shell, an upper heating shell, an upper heating sheet and an upper thermistor, and the upper magnetic shielding shell is located outside the upper heating shell. The lower cover assembly comprises a lower magnetic shielding shell, a lower heating shell, a lower heating sheet and a lower thermistor, and the lower magnetic shielding shell is located outside the lower heating shell. The accelerometer testing device can shield the electromagnetic interference signals of the testing environment during the testing process of the high-precision accelerometer, and can provide a stable and adjustable temperature environment for the accelerometer, so that the accelerometer is not disturbed by external magnetic fields and temperature fields, the error caused by the external testing environment is reduced, and the accuracy of the accelerometer testing is ensured.

A wallpaper system presents a first wallpaper image of a wallpaper video to a user and receives, via a user input device, one or both of: (i) a spatial user input selection, and (ii) a time user input selection from the user to apply to the wallpaper video. In response to detecting one or both of: (i) the spatial user input selection, and (ii) the time user input selection, the wallpaper system determines one or both of: (i) a respective spatial movement parameter within a wallpaper video associated with the spatial user input selection, and (ii) a respective time coordinate within the wallpaper video associated with the time user input selection. Wallpaper system presents, via the image display, a second wallpaper image associated with one or both of: (i) the respective spatial movement parameter, and (ii) the respective time coordinate.

Centrifugal gyroscopic devices are described herein. A representative device can include a shaft, an arm coupled to the shaft, a rotor coupled to the arm, and a control system operably coupled to the shaft, the arm, and / or the rotor. The shaft is rotatable about a first axis and the arm is configured to rotate with the shaft. The arm is pivotable about a second axis and the rotor is configured to pivot with the arm about the second axis. The rotor is further pivotable about a third axis. The control system is configured to bring the shaft, the arm, and the rotor into a resonant mode in which the shaft rotates at a rotational rate, the arm oscillates about the second axis at a first frequency substantially equal to the rotational rate, and the rotor oscillates about the third axis at a second frequency substantially equal to the first frequency.

A capacitive sensing charge amplifier, e.g., in a direct current (DC) feedback network, may incorporate a switching capacitor, including a first control switch and a second control switch, which receives a switching signal to charge and discharges the switching signal to a virtual ground of a sense amplifier. Noise incorporated into the output of the sense amplifier (e.g., a MEMS output signal) is filtered by a demodulation signal at a demodulator such that the period average noise at the demodulator output equals zero. The time varying nature of the switching capacitor resistance generally reshapes the system's post-demodulation noise to reduce its low frequency output noise.

The application discloses a kind of pipeline magnetic flux leakage internal detection data acquisition methods, including real-time monitoring acceleration data and angular velocity data collected in inertial sensor of magnetic flux leakage detector;According to acceleration data and angular velocity data, whether magnetic flux leakage detector is in stationary state is judged;If magnetic flux leakage detector is in stationary state, then the probe in magnetic flux leakage detector is controlled to be in hibernation state of not collecting magnetic flux leakage data, until magnetic flux leakage detector changes from stationary state to moving state;If magnetic flux leakage detector is in moving state, then the probe continues to carry out the collection of the magnetic flux leakage data of pipeline.This application avoids the repeated collection of useless data and the occupation of useless data to storage space, is favorable for reducing energy and the meaningless loss of storage space, for improving the frequency of magnetic flux leakage detector to collect magnetic flux leakage data provides support.In this application, a kind of pipeline magnetic flux leakage internal detection data acquisition device, equipment and computer readable storage medium are also provided, with the beneficial effects described above.

The invention provides intelligent wearable equipment and an automatic alarm method based on behavior recognition. The intelligent wearable equipment comprises an inertial sensor module, a main control module and an alarm module, inertial data of a wearer are collected through an inertial sensor module; then the master control module inputs the inertial data to the trained behavior recognition model, the behavior recognition model performs historical data training, the behavior state of the wearer can be recognized, the accuracy of behavior recognition can be improved, the data recognition process does not need to depend on a cloud server, and the real-time performance of behavior recognition can be improved; when the current behavior meets the preset alarm condition, the control instruction is generated to instruct the alarm module to generate an alarm, reliable feedback is provided for a user, and the safety of a wearer is guaranteed.

The invention relates to a method in which at least one ensemble of atoms is prepared in an output coupling state (Z1) and, by means of coherent control interventions acting on the at least one ensemble of atoms in an atom interferometer input state that is the same as or, after the application of further manipulation steps, different from the output coupling state (Z1), is changed into subsequent states different from the atom interferometer input state, and a matter-wave interferometry sequence, which may in particular have several loops, is carried out with the at least one ensemble of atoms. The invention further relates to an atom interferometer configured for carrying out such a method and to a computer program for carrying out such a method.

The application provides a sighting control method based on human detection, a product, a device and a medium. The sighting control method based on human detection includes: acquiring a current scene image in a current field of view of a sighting device; determining whether there is a human target currently being aimed according to a target recognition result of the current scene image and the position of an aiming mark in the current scene image; detecting whether a shooting action occurs if it is determined that there is a target human currently being aimed at; and controlling the sighting device to self-destroy if a shooting action occurs.

The invention relates to a method for controlling and implementing an atom interferometer, in which at least one ensemble of atoms is prepared in an out-coupling state, wherein the out-coupling state describes the state after cooling procedures and / or other preparation steps or generally the state before the following steps, in which the at least one ensemble of atoms is then transferred to a transfer state different from the out-coupling state by a transfer control intervention, in which the at least one ensemble of atoms is subsequently transferred to an atom interferometer input state by at least one relaunch control intervention, in which a matter-wave interferometry sequence is then carried out with the at least one ensemble of atoms by means of coherent control interventions acting on the at least one ensemble of atoms.The invention also relates to an atom interferometer configured to carry out such a method, and to a computer program for carrying out such a method.

A sensor module and a vehicle, the sensor module including: a package having a first space and a second space overlapping each other when viewed from a first direction; a vibration element and an integrated circuit disposed in the first space; and an MEMS sensor disposed in the second space, the integrated circuit is electrically connected to the vibrating element and the MEMS sensor, and the vibrating element, the integrated circuit, and the MEMS sensor overlap when viewed from the first direction.

A sensor for detecting a position of a mechanical component within a polar spherical coordinate reference system, comprising, accommodated inside a sensor body of the sensor: a linear position sensor configured to detect a first linear coordinate of a position of a free end of a slider in the polar spherical coordinate reference system; an acceleration sensor; an angular speed sensor; a data processing unit configured to: determine a second colatitude coordinate and a third longitude coordinate of said position based on acceleration values and angular speed values detectable by said sensors; store in a memory unit a plurality of sets of three detected polar spherical coordinates representative of a path travelled by the free end of the slider in said reference system.

The application discloses a kind of swing integral gyro accelerometer outer ring position identification method, this method includes: obtaining the expression of apparent acceleration;The expression of apparent acceleration is handled to obtain the matrix expression of apparent acceleration;Obtain multiple outer ring precession angular velocity, according to multiple outer ring precession angular velocity to obtain continuous record data;Obtain multiple outer ring precession angle, according to multiple outer ring precession angle to obtain continuous record data;According to continuous record data and continuous record data, parameter C 11 、C 21 、C 31 In the matrix expression of apparent acceleration, according to the apparent acceleration that swing integral gyro accelerometer sensitive axis senses, parameter C 11 、C 21 Obtain outer ring starting angular position;According to outer ring starting angular position and outer ring precession angle, swing integral gyro accelerometer real-time outer ring absolute angular position is obtained.The application solves the problem that swing integral gyro accelerometer outer ring position is unknown and cannot be controlled, with the characteristics of fast, reliable, practical.

The application discloses an aircraft water quantity measuring method and system, comprising the following steps: S01, obtaining the measurement data of a gyroscope and an accelerometer to calculate the three-axis acceleration of an aircraft, obtaining the attitude angle of the aircraft, and obtaining the water surface angle of a water tank according to the three-axis acceleration of the aircraft and the attitude angle of the aircraft; S02, obtaining the measurement data of a capacitive water level sensor to calculate the corresponding water surface height; and S03, obtaining the water quantity of the current water tank according to the corresponding relationship between the water surface angle, the water surface height and the water quantity in the water tank. The measurement data of the gyroscope and the accelerometer are directly used to obtain the three-axis acceleration of the aircraft, and the capacitive water quantity sensor is used to measure the water surface height, so that the synchronism of the measurement data of the water surface height and the three-axis acceleration is ensured, and the accurate measurement and real-time monitoring of the water quantity of the aircraft under complex flight states are improved.

An identity recognition method includes a step of storing multiple training data sets that respectively correspond to gaits of multiple members, a step of obtaining a gait similarity estimation model that is established by training a Siamese neural network using the training data sets, a step of obtaining a piece of inertial data that corresponds to a step taken by a user, a step of generating, based on the piece of inertial data, a piece of feature data that is related to gait of the step taken by the user, a step of generating, based on the piece of feature data and the training data sets, multiple evaluation results that respectively correspond to the training data sets by using the gait similarity estimation model, and a step of determining whether the user belongs to a group consisting of the members based on the evaluation results and a predefined threshold.

Disclosed herein is a system for tuning hydraulic components of a production digger. The system may comprise a sensor units mounted to the body, boom, stick and bucket of the production digger, and a processor in communication with the sensor units configured to receive signals and determine the rotational velocity and acceleration of various components of the digger around joints of the digger, and display tuning information to a user.

To provide a physical quantity sensor and the like that can achieve both size reduction and accuracy improvement.SOLUTION: A physical quantity sensor 1 includes: a first stationary electrode part 10 and a second stationary electrode part 50 that are provided on a substrate 2; a first movable electrode part 20 that is provided such that a movable electrode faces a stationary electrode of the first stationary electrode part 10; a second movable electrode part 60 that is provided such that a movable electrode faces a stationary electrode of the second stationary electrode part 50; a first stationary part 40 and a second stationary part 80 that are fixed to the substrate 2; a first support beam 42 that is connected with the first stationary part 40 at one end; a first connection part 30 that connects the other end of the first support beam and the first movable electrode part 20 with each other; a second support beam 82 that is connected with the second stationary part 80 at one end; and a second connection part 70 that connects the other end of the second support beam 82 and the second movable electrode part 60 with each other. In plan view in a third direction DR3 orthogonal to the substrate 2, the first movable electrode part, the second stationary part, the first stationary part, and the second movable electrode part are arranged side by side in this order along a first direction DR1.SELECTED DRAWING: Figure 1