165 results about "Inertial motion" patented technology

A portable electronic device that can obtain position information despite lacking GPS reception capability includes data storage that stores a reference position, a plurality of inertial motion sensors, and computational circuitry. The inertial motion sensors detect movement of the portable electronic device and output motion signals to the computation circuitry indicative of the sensed movement. In response to these motion signals and the stored reference position, the computational circuitry computes a position of the portable electronic device.

Terrain navigation apparatus (1) for a legged animal (2) traversing terrain (3) including a first system (4) for determining position, velocity and heading of the legged animal incorporating sensing means for sensing inertial motion in six degrees of freedom operable to provide signals indicative of a first velocity (5a), a first heading (7a) and a first position (9a) of the legged animal (2), contact means (11) for establishing, in a velocity profile describing motion of either foot of the legged animal, a period where the velocity should be zero (17), which period corresponds to full or partial contact of the respective foot (13a, 13b) with surrounding terrain (3), and error-estimating means (15) for receiving as input signals the velocity profile during the period and for providing as output signals estimates of errors (19) associated with the sensing means output signals, which errors operatively interact with the output signals of the first system to effect terrain navigation of the legged animal (2).

The invention discloses a screen display-controlling method facing to a slide body of a touch screen, which comprises the following steps of: (1) setting a coordinate system on a touch screen; (2) detecting the sliding action of a user on the touch screen with the coordinate system, and recoding parameters correlative to the sliding action; and (3) controlling the moving direction, speed and displacement of the slide body displayed on the screen according to the parameters, wherein the motion of the slide body is an inertial motion which consists of a positive acceleration stage and a negative acceleration stage. The method can control the display status of the slide body in the screen according to the sliding operation of the user on the slide body of the touch screen, reflects the factors such as the moving direction, speed, acceleration and the like of the slide body, and leads the user to obtain the visual effect which is close to the motion of objects in the real world.

A motion-coupled visual environment prevents, reduces and / or treats motion sickness by sensing inertial motion and providing a corresponding evocative image for a subject to view, Inertial sensors may include accelerometers, gyroscopes or a variety of other different sensor types. A cross-coupling algorithm may be used to cross couple different sensed inertial motions. A variety of mapping schemes may be used to map sensed inertial motion to corresponding motion within the evocative scene displayed on the display. Driver-centric, passenger-centric and simulation surround systems are possible. Applications include reducing motion sickness on passenger vehicles such as airplanes, trains and cars; on military vehicles such as ships, airplanes, helicopters and the like; and reducing “cybersickness” in the context of simulations on moving platforms.

A method and apparatus of detecting and using motion modes in a mobile device is described. Movement data is collected from an inertial motion unit (IMU) of the mobile device and compared to two or more sets of training data, each set of training data corresponding to a different motion mode. Then, a motion mode is determined to be the current mode of the mobile device on the results of the comparison. The motion mode is used by the mobile device in a variety of applications.

A scroll viewer control that displays associated content having inertial snap points in a scrollable view. The scroll viewer control applies inertial movement to displayed content such that even after a user completes a scroll gesture, the displayed content continues to scroll with reducing velocity until the scroll slows to a stop within the scrollable view. In so doing, the scroll viewer control enforces an inertial snap point by causing the scroll to stop when a boundary of the scrollable view coincides with the inertial snap point. A content control may implements an interface that allows the scroll viewer control to discover the snap point set associated with the content. Furthermore, the content control may notify the scroll viewer control of changes in the snap point set.

A motion-coupled visual environment prevents, reduces and / or treats motion sickness by sensing inertial motion and providing a corresponding evocative image for a subject to view. Inertial sensors may include accelerometers, gyroscopes or a variety of other different sensor types. A cross-coupling algorithm may be used to cross couple different sensed inertial motions. A variety of mapping schemes may be used to map sensed inertial motion to corresponding motion within the evocative scene displayed on the display. Applications include reducing motion sickness on passenger vehicles such as airplanes, trains and cars; on military vehicles such as ships, airplanes, helicopters and the like; and reducing “cybersickness” in the context of simulations on moving platforms.

A micromechanical structure for a MEMS three-axis capacitive accelerometer is provided with: a substrate; a single inertial mass having a main extension in a plane and arranged suspended above the substrate; and a frame element, elastically coupled to the inertial mass by coupling elastic elements and to anchorages, which are fixed with respect to the substrate by anchorage elastic elements. The coupling elastic elements and the anchorage elastic elements are configured so as to enable a first inertial movement of the inertial mass in response to a first external acceleration acting in a direction lying in the plane and also a second inertial movement of the inertial mass in response to a second external acceleration acting in a direction transverse to the plane.

A manually and electrically actuating toy gun structure includes a gun shell, a trigger, a gun machine core tube, and a piston. The control structure includes a first interlocking rod, a first push member, a second interlocking rod, a transmission set, a triggering device, a gun shell, and a push-and-propping-up block. One end of the first interlocking rod has a connecting pin interlocking with the first push member. The other end of the first interlocking rod has a connecting hole connecting to the trigger and being driven to slide along the x-direction. The hole of the first push member is connected to a connecting end of the first interlocking rod and is contacted with the push-and-pluck rod of the switch. The power supply of the electric motor is switched on when the first push member is driven by the first interlocking rod to push the push-and-pluck rod. The arcuate surface of the draw bar on the second interlocking rod performs action in corresponding with the interlocking salient pin of the first compound gear. When the power supply of the electric motor is switched on, the interlocking salient pin at the resilient cantilever of the first compound gear in the transmission set performs action making the piston of the triggering device to be driven backward and the gun machine core tube on the triggering device to be driven by the interlocking salient pin to displace backward that makes the bullets contained in the cartridge drop at the pre-determined position. When the lower rack under the piston separates from the first compound gear, the piston returns back to the original position and pushes out the compressed air to shoot off the bullet. On the other hand, when the power supply of the electric motor is turned off making the first compound gear generate reversed rotation due to the inertial motion, the interlocking salient pin is capable of relieving the catching with the draw bar to make the first compound gear positively mesh with the lower rack.

A motion-coupled visual environment prevents, reduces and / or treats motion sickness by sensing inertial motion and providing a corresponding evocative image for a subject to view. Inertial sensors may include accelerometers, gyroscopes or a variety of other different sensor types. A cross-coupling algorithm may be used to cross couple different sensed inertial motions. A variety of mapping schemes may be used to map sensed inertial motion to corresponding motion within the evocative scene displayed on the display. Driver-centric, passenger-centric and simulation surround systems are possible. Applications include reducing motion sickness on passenger vehicles such as airplanes, trains and cars; on military vehicles such as ships, airplanes, helicopters and the like; and reducing “cybersickness” in the context of simulations on moving platforms.

The invention discloses a solar power generation device capable of automatically removing snow and dust. The solar power generation device capable of automatically removing the snow and the dust comprises a solar photovoltaic module, a support pillar, a rotation shaft, a spring, a drive rod and a cam drive unit, wherein the rotation shaft is vertically fixed on a rotation unit, the rotation unit is installed on a structural embedded part, the support pillar is connected with the rotation shaft in rotation mode, the solar photovoltaic module is fixedly arranged at the top of the support pillar, the tail of the support pillar is connected with the bottom of the rotation shaft through the spring, the cam drive unit is fixedly installed on the rotation shaft, one end of the drive rod is fixed on the support pillar, and the other end of the drive rod is clamped on a cam edge of the cam drive unit. The solar power generation device capable of automatically removing the snow and the dust only uses the spring and a cam mechanism to control trembling inertial motion of the solar photovoltaic module, and effectively achieves accumulated snow removal and sand dust removal.

The invention discloses a novel MEMS (micro electro mechanical system) centrifugal-type gyroscope technology, belonging to the field of inertia measurement. Four mass blocks of a gyroscope are distributed annularly and uniformly at the periphery of a central anchor point 7, and each mass block and the central anchor point 7 are connected through an elastic beam 6; the adjacent mass blocks are connected through two parallel arc decoupling beams 7; and a group of movable comb teeth 8 are distributed on each mass block 4, and form comb tooth capacitance with corresponding fixed comb teeth 9. When the angularity speed is input in the environment, the MEMS centrifugal-type gyroscope is subjected to displacement because of centrifugal force, and the angularity speed which is input in the environment can be reckoned through the detection of the displacement. Compared with the other MEMS gyroscopes, the gyroscope is not required to be driven, the detection of the angularity speed can be realized by utilizing the inertial motion of the gyroscope, thus the energy consumption is reduced; driving does not exist, the Brown noise can be reduced greatly, and the zero deflection stability is improved greatly; and simultaneously the cross coupling error of the MEMS oscillating-type gyroscope can be eliminated, and the precision is improved.

A method and apparatus for performing motion recognition using motion sensor fusion and an associated computer program product are provided, where the method is applied to an electronic device. The method includes the steps of: utilizing a plurality of motion sensors of the electronic device to obtain sensor data respectively corresponding to the plurality of motion sensors, the sensor data measured at a device coordinate system of the electronic device, wherein the plurality of motion sensors includes inertial motion sensors; and performing sensor fusion according to the sensor data by converting at least one portion of the sensor data and derivatives of the sensor data into converted data based on a global coordinate system of a user of the electronic device, to perform motion recognition based on the global coordinate system, in order to recognize the user's motion.

A method for identifying a gunshot occurrence. According to one embodiment, microphone data and inertial motion data are acquired with a hand-held device. Based on an acoustic criterion, a determination is made as to whether a gunshot has been produced. Based on a correlation criterion applied to the inertial motion data, a determination is made as to whether the gunshot was produced from fire produced by a first person having physical possession of the hand-held device or by a second person spaced away from the first person.

The invention provides a motion measuring method and a motion measuring device. The method comprises the following steps: obtaining measured values of an acceleration sensor, a gyroscope sensor and a magnetic sensor of a motion terminal; obtaining the three-dimensional gravitational acceleration and azimuth angle of relative carrier coordinates of the motion terminal; obtaining the three-dimensional motion acceleration of the relative carrier coordinates; obtaining the three-dimensional motion acceleration of relative earth coordinates; obtaining the acceleration, the speed, the displacement and the stereoscopic motion track of the relative earth coordinates. According to the invention, a specific process calculation method is adopted to greatly reduce various errors produced in inertial motion posture calculation and subsequent computations, so that brand new, convenient, rapid and efficient measuring method and device are provided for body motions such as boxing, kicking and the like of human bodies and similar motions of objects in natural world.

The invention provides a multi-list redundant strapdown inertial measuring device for a laser gyroscope. According to the multi-list redundant strapdown inertial measuring device, three orthogonally-arranged gyroscopes Gx, Gy and Gz and two obliquely-arranged gyroscopes Gs and Gt can be used for sensing an angle speed of a carrier moving in an inertial space; three orthogonally-arranged accelerometers Ax, Ay and Az and two obliquely-arranged accelerometers As and At can be used for sensing a specific force of the carrier moving in the inertial space; a resolving computer of the device can be used for collecting inertial information in real time and at a high speed and the inertial information is sent to a navigational computer in real time by a high-speed bus; after the navigational computer obtains inertia type instrument information transmitted by the strapdown inertial measuring device for the laser gyroscope, information including a course, a posture, a speed, a position and the like of the carrier can be calculated and output in real time and is supplied to a guidance and posture control system for use.

Systems and methods for collecting and recording video data and inertial motion unit (IMU) data associated with the video data representative of a path of traversal, transmitting the video data and IMU data associated with the video data to a rescue device that includes a display, and subsequently replaying the video data on the display of the rescue device along with viewable indicia, based on the IMU data associated with the video data, that is indicative of the motion of a user when the video data was collected and recorded.

The invention discloses a method and device for compensating three-dimensional inertial motion sensing. The method comprises the following steps of: performing data acquisition on three-dimensional inertial motion by a three-dimensional inertial sensing system, thus acquiring three-dimensional sensing data of the three-dimensional inertial motion; performing data acquisition on the three-dimensional inertial motion by a two-dimensional sensor which synchronously works with the three-dimensional inertial sensing system, thus acquiring two-dimensional sensing data of the three-dimensional inertial motion, wherein the two-dimensional sensing data synchronously corresponds to the three-dimensional sensing data; compensating the three-dimensional sensing data with the two-dimensional sensing data in reference to a standard database or a correction compensation relation and / or a correction compensation parameters; and performing operation processing on the compensated three-dimensional sensing data, thus further acquiring positioning data of the three-dimensional inertial motion. The method is simple in implementation mode, low in cost, high in stability, high in precision and accurate in positioning and can be widely applied to motion detection.

The invention discloses an inertial motion capture pose transient calibration method and an inertial motion capture system. The inertial motion capture system comprises a data communication module, one or more pose capture modules and a data terminal, wherein each pose capture module comprises a nine-axis sensor (and a microprocessor), and one of the pose capture modules is a reference module; and pose transient calibration is performed by establishing a relationship among a world coordinate system V(w), an object capture coordinate system and an installation coordinate system in the system. Through the method and the system, a user can transiently and quickly finish system calibration only by adopting a pose, and pose correction and automatic quick adjustment of a skeleton proportion of a virtual model can be performed in the calibration process, so that the matching degree of action nodes is increased, the problem of inconsistent skeleton proportions of the virtual model and an actual object is effectively solved, the actions of a captured object are highly recovered, and the precision of motion capture is improved; and the operation is simple, so that the action capture time is greatly shortened.

A system and a method for commanding a spacecraft to perform a three-axis maneuver purely based on “position” (i.e., attitude) measurements. Using an “inertial gimbal concept”, a set of formulae are derived that can map a set of “inertial” motion to the spacecraft body frame based on position information so that the spacecraft can perform / follow according to the desired inertial position maneuvers commands. Also, the system and method disclosed herein employ an intrusion steering law to protect the spacecraft from acquisition failure when a long sensor intrusion occurs.

The invention belongs to the technical field of automatic fitness equipment, and in particular relates to a gait-adjusting type running training device. A virtual scene large screen is electrically connected to a treadmill, wherein a pressure distribution measurement device is arranged on the treadmill; an inertial motion measurement and a biological signal acquisition device which are respectively in electric information connection to the treadmill are respectively used for measuring a leg motion amplitude of an exerciser and an electric muscle signal of the exerciser; a training system is arranged in the treadmill and is used for receiving signals on exerciser's exercise parameters returned by the pressure distribution measurement device, the inertial motion measurement device and the biological signal acquisition device in real time, and the signals, after being analyzed and processed, are fed back to the treadmill so as to regulate the speed of the treadmill; and meanwhile, the signals are fed back to the virtual scene large screen, so as to display exercise parameters as well as an outdoor exercise scene and a road condition matched with the exercise function state of the exerciser; and the device is simple in structure, skillful in design, scientific in principle, high in automation degree, broad in application scope and low in safety hidden trouble.

The invention discloses a multi-rotor unmanned aerial vehicle emergency parachuting device with an adaptive ejection angle adjustment function and a method. The device comprises a parachute cabin, a parachute cabin cover, a parachute, a parachute throwing spring, a lock bolt, an unlocking steering engine, a microcontroller, an inertial motion measuring unit and a spring support rotating device. The parachute cabin cover is fixed to the parachute cabin under the combined action of the unlocking steering engine and the lock bolt, and the parachute cabin is fixed to a multi-rotor unmanned aerial vehicle; the parachute, the parachute throwing spring, the microcontroller, the inertial motion measuring unit and the spring support rotating device are arranged in a structure formed by the parachute cabin and the parachute cabin cover; the microcontroller is connected with the unlocking steering engine, the inertial motion measuring unit and the spring support rotating device, one end of the parachute throwing spring is fixed to the spring support rotating device, and the other end of the parachute throwing spring is fixed to the parachute. By adaptively adjusting the spring ejection angle, it can be guaranteed that the parachute is ejected vertically upwards even when the posture of the multi-rotor unmanned aerial vehicle has large deflection or inclination.

Disclosed are active vehicle seat assemblies, methods for making and using such seat assemblies, and vehicles with active seat assemblies for counteracting unwanted inertial forces. An active vehicle seat assembly is disclosed that includes an occupant chair with interconnected seat and backrest portions. A motion sensor detects motion of the occupant chair and outputs signals indicative thereof. An automated platform movably mounts the occupant chair to the vehicle body. The platform includes: a pitch plate that pivots about two lateral axes; a pitch actuator that selectively pivots the pitch plate; a roll plate that pivots about two longitudinal axes; and a roll actuator that selectively pivots the roll plate. An on-board controller responds to signals from the motion sensor indicative of inertial motion disturbances to the chair by transmitting control signals to the pitch and / or roll actuators to pivot the pitch and / or roll plates to thereby counteract the inertial disturbances.

An intra-oral camera has a projector that is energizable to emit patterned illumination and an imaging sensor that is energizable to obtain image content. An inertial motion sensing element provides signals indicative of acceleration of the intra-oral imaging apparatus along at least one axis. A processor is in signal communication with the projector, the imaging sensor, and the inertial motion sensing element and is configured to initiate image acquisition according to signals obtained from the inertial motion sensing element.

Fault detection for real-time visual-inertial odometry motion tracking. A fault detection system allows immediate detection of error when the motion of a device cannot be accurately determined. The system includes subdetectors that operate independently and in parallel to a main system on a device to determine if a condition exists which results in a main system error. Each subdetector covers a phase of a six-degrees of freedom (6DOF) estimation. If any of the subdetectors detect an error, a fault is output to the main system to indicate a motion tracking failure.

The invention relates to an inertial measurement unit (IMU) for rotating carriers, which mainly designs a high-performance microminiature inertial instrument scheme (mainly composed of parts of three groups of orthogonal gyros formed by four MEMS gyros, three orthogonal quartz digital accelerometers, a structure body, a secondary power supply, a signal processing and communication interface, and the like), and designs the effective compensation of random drift errors of the MEMS gyros by UKF Kalman filtering. The scheme of the invention has the characteristics of wide measuring range, small size, high dynamics, and low weight, is suitable for real-time measurement of flight attitude of a high-speed rotating missile body during a flight process, suitable for position and speed measurement of long-range rocket projectiles, middle and short-range terminal guided ammunition, ground weapon attitude stabilization systems, aerial bomb flight control systems, and unmanned plane heading and attitude systems. The scheme of the invention is also applicable to nuclear submarine strapdown positioning combination, environment swing and inclination measuring systems, inertial motion recording systems of various vehicles and ships, and the like.

An embodiment of the invention provides a positioning method and a mobile terminal. The positioning method is applied to the mobile terminal provided with a positioning module, and comprises the steps of: controlling the positioning module to turn on when turn-on interval time of the positioning module arrives, and acquiring first position information of the mobile terminal at first time through the positioning module; controlling the positioning module to turn off when the first position information is acquired; acquiring first motion direction information and first acceleration information of the mobile terminal at the first time; and determining a first inertial motion trajectory of the mobile terminal according to the first position information, the first motion direction information and the first acceleration information. The positioning method and the mobile terminal can ensure the precision of positioning, avoid long-term power consumption of the positioning module since the positioning module does not operate continuously, effectively save electric quantity of a mobile terminal battery, and prolongs the battery life of the mobile terminal battery.

The invention discloses a tension leg platform based vertical axis wind turbine and vertical-horizontal two-direction wave power generation integrated structure, and belongs to the field of ocean energy utilization. The integrated structure comprises a vertical axis wind turbine, a two-direction wave power generation device, two-direction hydraulic power generation systems located in the two-direction wave power generation device, a tower structure, a tension leg platform structure and a matched power transmission system. Relative vertical motion of the two-direction wave power generation device and the tower structure drives a vertical piston (or relative horizontal motion drives a horizontal piston) to compress liquid in hydraulic cylinders, the liquid passes through first unidirectionalinflow valves (or passes through second unidirectional inflow valves in the reverse direction) to enter hydraulic motors, the hydraulic motors are driven to rotate, and therefore power generation devices are driven to generate power. In addition, tension leg structures can effectively control longitudinal shaking and transverse shaking of a floating platform, good operation of a top fan is facilitated, and huge tower bending moment loads caused by top large-mass cabin inertial motion are controlled.