204 results about "Head rotation" patented technology

The invention relates to the technical field of intelligent education, in particular to an interactive English teaching method and system based on AI vision, and the method comprises the steps: obtaining the voice and mouth dynamic image frame segments of a student, extracting an offset frame segment to generate a semantic motion disjunction interval, analyzing the time sequence consistency of a behavior signal and a motion cause word triggering frame segment, and calculating the motion matching degree. Time synchronism of the speech output and the visual action is evaluated. According to the invention, through real-time analysis of the voice and mouth dynamic image of the student, the alignment offset of the pronunciation and the mouth action is identified, and in combination with behavior signals such as eye fixation and head rotation of the student, the interactivity between the language action and the behavior of the learner is comprehensively evaluated, so that the efficient alignment of the language expression and the standard template is ensured; by analyzing the distribution frequency and the matching degree of the voice behaviors, a personalized teaching path is optimized. In addition, delay frames and contour offset are deeply analyzed, the synchronism of voice and visual actions is enhanced, and the real-time feedback and interaction effect in the learning process is improved.

The invention discloses an interaction method and system based on multi-modal data, and relates to the technical field of man-machine interaction. The method comprises the steps that initial interaction data of a user is acquired, preprocessing and feature coding are carried out on the initial interaction data, target interaction data are obtained, and the initial interaction data comprise a hand depth image, a voice signal, a through hole center coordinate and a head rotation matrix; determining a target weight of each piece of target interaction data by using a preset weight strategy, performing conflict resolution on each piece of target interaction data based on the target weight of each piece of target interaction data or the timestamp of each piece of target interaction data, and fusing each piece of target interaction data after conflict resolution to obtain a target interaction instruction; and executing the target interaction instruction, and displaying the virtual scene and the operation target after executing the target interaction instruction. Therefore, the problems that the interaction dimension of the current virtual reality technology is single, the multi-modal signal fusion degree is low, a cooperation mechanism is missing, and misjudgment is easily caused are solved.

Calibration for eye tracking calibration in a head-mounted display can refined during use by tracking head rotation of a user during a time period while the head-mounted display is worn by the user, tracking eye rotation of the user during the time period, comparing the eye rotation of the user to the head rotation of the user during the time period, and refining a calibration state of eye tracking for the head-mounted display based on comparing the eye rotation of the user to the head rotation of the user during the time period.

A system for reducing the physiologic strain on a surgeon and for reducing turn around time between patient surgical procedures, wherein said surgical procedures are performed successively on patients who are each disposed upon a surgical bed, by providing the ability to repeatably locate and orient surgical assistive features and patient body portions such that surgeon is presented with similar location of surgical assistive features and patient body portions from one surgical procedure to the next. Patient head location may adjusted by inflatable bladders. Patient head rotation, surgeon stool height, operating bed height, wrist rest height and other surgical assistive features are quickly adjustable so as to be repeatable from one surgical procedure to the next. Surgeon fatigue and turn around time between surgical procedures are reduced. The adjustments may be computer-controlled for repeatability and accuracy.

An innovative protective football helmet includes a durable shell having an impact attenuation system, a visor system with a visor, a lower chin bar assembly, and internal impact attenuation assembly. The connection of the visor to the shell is “tool-less,” meaning that no unique tool is required for coupling or removing the visor system. The visor system is not coupled to the lower chin bar assembly, which allows the visor to independently flex and independently elastically deform relative to the chin bar assembly. The visor is configured to match a substantial extent of the frontal shell region, thus the visor does not need to be substantially deformed during the installation process, which eliminates the introduction of additional stresses on the visor during the installation process. The visor also replaces a significant upper extent of a conventional facemask that is both heavy and costly to manufacture. Due to the design of the helmet and visor system, there is a significant increase in the player's field of view through the frontal helmet opening and the visor. This increase in the field of view provides greater situational awareness for the player and allows the player to reduce the amount of head rotation necessary to see objects or other players when the player is engaged in playing the sport.

The utility model discloses a robot head rotating mechanism and a robot. The robot head rotating mechanism comprises a horizontal driving motor, a horizontal rotating shaft seat, a pitching driving motor, a pitching rotating shaft seat, a moving joint and a bevel gear. The pitching driving motor is used for providing driving force for rotation of the bevel gear; an arc-shaped rack is arranged on the motion joint, and the bevel gear is meshed with the arc-shaped rack of the motion joint, so that the motion joint is driven to rotate in a pitching mode based on driving force provided by the pitching driving motor; the pitching rotating shaft seat is installed above the horizontal rotating shaft seat, the horizontal driving motor provides driving force for horizontal rotation of the horizontal rotating shaft seat, and the horizontal rotating shaft seat drives the pitching rotating shaft seat to rotate horizontally when rotating horizontally. Based on the combination of the pitching driving module and the horizontal driving module, the robot head can flexibly achieve pitching rotation and horizontal rotation, meanwhile, based on the relative installation relation of the pitching rotating shaft base and the horizontal rotating shaft base, the occupied space needed by the robot head rotating mechanism is reduced, and the structure is simple.

The invention relates to the technical field of TWS earphone low-delay audio processing methods, in particular to a TWS earphone low-delay audio processing method based on head motion prediction, which comprises the following steps: S1, collecting head motion parameters of a user, the head motion parameters comprising a head posture theta, a head rotation angular velocity omega, a head movement direction phi and a head movement velocity V; s2, establishing a relation model between the head motion parameters and the audio time delay; s3, predicting head motion parameters in a future time period based on a recurrent neural network; s4, according to the predicted head motion parameters, audio time delay is calculated, and audio rendering is carried out; s5, outputting the audio signal subjected to time delay compensation; wherein the steps from S2 to S5 are executed circularly so as to adjust audio output in real time; head motion prediction is carried out by using the recurrent neural network, and the head position and the motion trend of the user can be accurately estimated in a millisecond level, so that audio pre-rendering and accurate output are realized.

The invention relates to electronic equipment, a method and a storage medium. An electronic device includes: a processor; and a memory storing computer program code, where the computer program code, when executed by the processor, causes the electronic device to perform operations including: receiving a gaze point position and head rotation information of a user; obtaining interaction content information; predicting a gaze range of the user by using an artificial intelligence (AI) model based on the gaze point position and the head rotation information of the user and the interaction content information; and rendering an interactive picture for display based on the predicted gaze range.

The invention provides a wireless earphone adaptive anti-noise method and related equipment, and relates to the technical field of earphone intelligent adjustment. The method comprises the following steps: acquiring acceleration information when a user uses the earphone by virtue of an accelerometer in the earphone, acquiring head rotation information by utilizing a gyroscope, and simultaneously collecting a plurality of audio signals corresponding to the earphone. And determining a suspected use scene by using an earphone use scene model which is trained by deep learning and is generated by the audio information set with the use scene label in combination with the audio signal. Through a scene verification model trained by the acceleration with the scene label and the head rotation information set, a real scene is determined by combining the acceleration with the scene label and the head rotation information set, and finally anti-noise parameters are adjusted according to the real scene. In this way, the wireless earphone can identify the characteristics of the current use environment more accurately, so that more accurate noise processing is realized, and the audition experience of a user in various environments is effectively improved.

The invention relates to the technical field of AR interaction control, in particular to an AR glasses cursor control method and system based on head posture induction, and the method comprises the steps of data acquisition, mapping establishment, displacement accumulation and cursor control. Through the AR glasses equipment body, the natural rotation posture of the head of the user is collected and used as an input instruction, and a reverse mapping normal form is constructed, so that the physical direction of cursor movement is opposite to the physical direction of user head rotation, and a non-intuitive chasing relation between the cursor and a target is avoided; intuitive mapping between natural rotation of the head of the user and cursor control of the AR glasses is achieved, accurate control over the cursor can be achieved without additional auxiliary actions or a controller, and convenience and privacy are high.

The invention discloses an audio device and a control method thereof, and a storage medium, and relates to the technical field of audio, and the method comprises the steps: monitoring the head rotation angle of a target user, and obtaining the personalized acoustic transmission data of the target user, the personalized acoustic transmission data comprises at least one head related transfer function HRTF obtained by training based on the personal auditory physiological data of the target user; according to the head rotation angle, adjusting a pose of a virtual loudspeaker in the audio equipment to obtain a virtual playing pose of the virtual loudspeaker; and acquiring a target head-related transfer function HRTF corresponding to the virtual playing pose in the personalized acoustic transmission data, and rendering audio played by the audio equipment according to the target head-related transfer function HRTF so as to simulate audio playing at the virtual playing pose. According to the invention, the problem of poor sound quality performance of the audio equipment caused by head rotation is solved.

The present disclosure relates to an electronic device, a communication method, and a storage medium. The electronic device comprises: a processor; and a memory storing a computer program code, wherein when the computer program code is executed by the processor, the electronic device executes operations, the operations comprising: receiving a foveated position and head rotation information of a user; acquiring interactive content information; on the basis of the foveated position and the head rotation information of the user and the interactive content information, using an artificial intelligence (AI) model to predict a gaze range of the user; and on the basis of the predicted gaze range, rendering an interactive picture for display.

The invention discloses a helmet energy absorption structure design method based on injury mechanics, which comprises the following steps: (1) performing head rotary injury mechanics analysis, performing a head injury analogue simulation experiment based on a head injury mechanics model, analyzing the stress distribution of the head in collision and the influence of the rotary acceleration on the brain injury, and determining the head rotary injury mechanics model; generating rotary damage influence evaluation; (2) selecting a helmet energy-absorbing material and evaluating the performance of a multi-layer material of an energy-absorbing layer, testing the energy absorption performance of foam materials with different densities on the basis of rotary damage influence evaluation, and generating an energy-absorbing material performance optimization result; (3) multi-level design and performance optimization of the energy absorption layer; (4) verifying the performance of the energy absorption layer structure; and (5) comprehensive optimization and design adjustment of the energy absorption layer. According to the helmet energy absorption structure design method based on damage mechanics, transmission and absorption of the rotation acceleration of the head are controlled through an optimization design method, and multi-layer and systematized structural design and optimization are conducted on a helmet energy absorption layer.

An electronic device is provided. The electronic device includes a plurality of distance sensors, an inertial sensor, a camera, a display, memory storing one or more computer programs, and a processor operatively connected to the plurality of distance sensors, the inertial sensor, the camera module, the display module, and the memory, wherein the one or more computer programs include computer-executable instructions that, when executed by processor, cause the electronic device to: identify, using the inertial sensor, whether a user wearing the electronic device on their head is walking, detect, in response to the user walking, a head rotation amount of the user using the inertial sensor, obtain a plurality of images through the camera on the basis of satisfying a head rotation condition based on the head rotation amount, measure an angle between a movement direction of the user and a gaze direction of the user on the basis of the plurality of images that are obtained, and activate among the plurality of distance sensors, at least one first distance sensor corresponding to the movement direction, when the measured angle exceeds a threshold.

The invention relates to a personalized virtual makeup trying system and method based on multi-modal interaction and three-dimensional reconstruction, and the method comprises the steps: collecting a face video stream through a mobile terminal by a camera capture module, and generating multi-modal sensing data through space-time alignment; the three-dimensional reconstruction module fuses the expression change and the head motion trail to construct a dynamic face model; the sensor fusion module analyzes a reference makeup image, a voice instruction and an environment illumination parameter uploaded by a user, and generates a makeup volume measuring scheme through cross-modal semantic fusion; the interface synchronization module simulates the physical interaction effect of skin and cosmetics on the dynamic face model to generate an environment-adaptive virtual makeup trying effect, so that the problems of dynamic distortion, multi-mode intention splitting, poor environment adaptability, insufficient makeup effect physical restoration and the like in the traditional makeup trying technology are solved; makeup fitting, complex intention analysis, illumination change real-time adaptation and real restoration of cosmetic materials during large-angle rotation of the head are achieved, and the device can be widely applied to the fields of beauty makeup retail, medical beauty rehabilitation and the like.

This invention discloses a method for controlling borehole reaming in a rotary drilling rig, a reaming drill bit, and a rotary drilling rig. The rotary drilling rig includes a drill bit axial movement drive device, a power head rotation drive device, and a reaming drill bit. The reaming drill bit includes a reaming assembly and a reaming drive device. The method for controlling borehole reaming in a rotary drilling rig includes: when performing non-spiral reaming on a central hole, controlling the power head rotation drive device to rotate the reaming drill bit around the axis of the central hole; controlling the reaming drive device to change the reaming radius of the reaming assembly; and controlling the drill bit axial movement drive device to move the reaming drill bit axially, ensuring that the axial displacement of the reaming drill bit and the reaming radius of the reaming assembly satisfy a first preset functional relationship. By ensuring that the axial displacement of the reaming drill bit and the reaming radius of the reaming assembly satisfy the first preset functional relationship, the reaming meets preset shape requirements. By changing different first preset functional relationships, various reaming shapes can be achieved.

The utility model provides a testing device and a testing system. The testing device comprises a track structure; the rotating structure comprises a base slidably connected with the track structure and a rotating assembly capable of rotating relative to the base, a supporting rod is fixedly connected to the center of the rotating assembly, and a rotating shaft assembly is rotatably connected to the top end of the supporting rod; the human body model sleeves the periphery of the supporting rod and can rotate relative to the base around a first rotating center along with the rotating assembly; the head model is fixedly connected with the rotating shaft assembly and can rotate relative to the supporting rod around the second rotating center along with the rotating shaft assembly; an image acquisition and recognition part is arranged on the rotating shaft assembly to recognize an image in front of the human body model and judge a test result. The testing device and the testing system can effectively and accurately complete testing distance changing, head turning and nodding actions so as to meet the testing requirements, are higher in accuracy, can automatically judge the testing result, greatly improve the testing efficiency and liberate manpower.

To provide a medical pillow which can suppress head rotation by arranging a pillow body and head fixing parts on both ends of the upper surface of the pillow body. [Solution] It is composed of a pillow body 1 and head fixing parts 2 arranged on both ends of the upper surface of the pillow body, and the cross section of the head fixing part 2 is a right triangle or a trapezoid with a right angle, and its inclined surface is arranged toward the head. In addition, by providing hook-and-loop fasteners 4 on sides A and B of the head fixing part 2 and making it detachable, it can be adjusted to fit the size of the patient's head, suppressing head rotation and helping to prevent the patient's condition from worsening and increasing comfort.

The utility model discloses a novel brushless lightweight electric wheelchair, including the electric guide rail of fixed in wheelchair backrest frame back side and downward, and the sliding end of electric guide rail is installed with the mounting seat through spring seat, and the mounting seat is equipped with the massage head for massaging the back of people through the fixing frame, and be equipped with the drive motor of drive massage head rotation on the mounting seat, and the both ends of electric guide rail are equipped with the position sensor of detecting the position of massage head respectively, still be equipped with controller on the wheelchair, position sensor, electric guide rail and drive motor all are electric connection with controller, the utility model discloses massage mechanism can move up and down, like this can to the whole back memory massage, this has played the effect of promoting blood circulation, avoids the body to be not comfortable because of long sitting, wherein the setting of spring seat guarantees the elastic contact between massage head and the back of human body, avoids knocking the back of human body.

The invention provides a laryngocarcinoma patient rehabilitation nursing device. The laryngocarcinoma patient rehabilitation nursing device comprises a base, a bearing plate and a resistance adjusting mechanism. When the head of a patient rotates to drive the bearing plate to rotate, the mounting blocks can be matched with the baffles to extrude the pressure springs to apply resistance to rotation exercise of the head of the patient, and when the resistance of rotation exercise of the head needs to be adjusted, the first driving assembly is adjusted to drive the two baffles to slide to increase the number of shielding limiting grooves, namely the number of the baffles abutting against the pressure springs can be increased; at the moment, the head drives the bearing plate to rotate to increase the number of extruded compressed springs, and then the resistance of the head during rotating exercise is increased; the first driving assembly is adjusted to drive two groups of baffles to slide reversely to reduce the number of shielded limiting grooves, so that the number of the compressed springs propped by the baffles can be reduced; at the moment, the head drives the bearing plate to rotate, so that the number of extrusion pressure springs can be reduced, the resistance during head rotation exercise is reduced, the resistance during head rotation exercise can be conveniently adjusted according to the requirements of patients, different patients can conveniently use the device, and the practicability of the device is improved.

The invention discloses a vehicle blind area recognition method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining a pre-generated static blind area model based on vehicle body parameters of a vehicle, monitoring the attitude angle data of the vehicle under a driving condition, and the head rotation angle and the sight line direction of a driver, adjusting the static blind area model according to a rotation transformation matrix corresponding to the attitude angle data, generating a dynamic blind area model of the vehicle, detecting an obstacle target in the dynamic blind area model, determining the collision risk level of the obstacle target and the vehicle, and determining the collision risk level of the vehicle according to the head rotation angle, the sight line direction and the obstacle target. And determining the attention recognition condition of the driver to the obstacle target, synchronously displaying the obstacle target, the collision risk level and the attention recognition condition to the dynamic blind area model to obtain a dynamic blind area map of the vehicle, and controlling the vehicle to perform blind area early warning. According to the method, the high-risk target appearing in the blind area can be timely and effectively recognized through the dynamic blind area map, and the vehicle driving safety is improved.

The present invention relates to the technical field of image processing, and particularly to a method and system for detecting examination violation behaviors based on surveillance videos, including: acquiring surveillance images, blank test papers, and the facial regions of examinees; obtaining multiple detection regions through edge detection; obtaining the facial region and test paper region of each examinee; obtaining the surveillance image of each examinee when the facial region rotates each time through template matching, and further obtaining the rotation amplitude of each examinee when the facial region rotates each time; combining the number of times the facial region of each examinee rotates, obtaining the cheating feature manifestation degree of each examinee when the facial region rotates each time, obtaining the cheating possibility of each examinee when the facial region rotates each time, and obtaining the surveillance image containing abnormal behaviors. The present invention aims to solve the problem that when judging whether an examinee has abnormal behaviors only by the head rotation of the examinee, examinees with a habit of turning their heads are misidentified as examinees with abnormal behaviors.

Calibration for eye tracking calibration in a head-mounted display can refined during use by tracking head rotation of a user during a time period while the head-mounted display is worn by the user, tracking eye rotation of the user during the time period, comparing the eye rotation of the user to the head rotation of the user during the time period, and refining a calibration state of eye tracking for the head-mounted display based on comparing the eye rotation of the user to the head rotation of the user during the time period.

The utility model discloses a coil polishing device, including frame, set up driving assembly and two polishing head on the frame, two polishing head inclination setting, form the polishing gap between two polishing heads, driving assembly is used for driving two polishing head rotation. The utility model realizes the mechanization of coil polishing, and the polishing efficiency is low high, the consistency is good, and the polishing gap can be adjusted, and it is not easy to damage the wire base body and lead to broken line or recessive injury.

Some examples of the disclosure relate to a method performed on an electronic device configured to track a first vector indicating an orientation of the electronic device. In some examples, the electronic device tracks a second vector indicating a predicted motion path of the electronic device. In some examples, the device detects a difference between the first and second vectors. In some examples, and according to a finding that one or more first criteria are satisfied, the electronic device determines the difference as a head rotation input and performs an action according to the head rotation input.

Provided is a technique capable of processing a substrate in a short time. A processing apparatus (1) includes: a stage (10) configured to hold a substrate (Wf) such that a surface to be processed of the substrate faces upward; a stage rotation device (20) configured to rotate the stage; a plurality of heads (30a, 40a) on which processing pads (Pd1, Pd2) having an area smaller than the area of the surface to be processed of the substrate are respectively mounted; a plurality of heads; a plurality of head rotating devices (50a, 55a); a plurality of pressing devices (60a, 65a) each having an electromagnetic actuator configured so as to apply a pressing force to each of the plurality of heads by means of an electromagnetic force; and a plurality of swing devices (70a, 80a).

The utility model discloses a grader cab ladder stand anti-collision device, which relates to the technical field of graders, and comprises a grader front rack and a ladder stand, the bottom of the grader front rack is rotatably provided with a traction frame through a ball head, the bottom of the traction frame is fixedly provided with a rotary ring, one side of the bottom of the rotary ring is fixedly provided with a scraper knife, and the other side of the rotary ring is fixedly provided with a handle. A flow motor is arranged between the bottom of the land leveler front rack and the traction frame, and the device is characterized by further comprising a front wide-angle camera fixedly installed at the front lower position of the land leveler front rack and distance sensors arranged on the two sides of the end, close to the land leveler front rack, of the crawling ladder. The distance between the scraper knife and the crawling ladder can be detected through the distance sensor, the distance state can be conveniently transmitted to the displayer through the front wide-angle camera, then the flow motor can conveniently drive the rotating ring and the scraper knife to rotate, and the scraper knife can be prevented from hurting workers.

The utility model relates to a head shaking mechanism with an automatic correction function and a fan thereof, and belongs to the technical field of fans. The head shaking mechanism comprises a top support, a rotating support, a front shell, a head shaking rotating shaft, a head shaking connecting support, a head shaking motor and a driving gear, the head shaking connecting support is movably connected with the inner wall of the front shell, an arc sliding groove is formed in the head shaking connecting support, a driven rack is arranged on the inner side wall of the arc sliding groove, and the driving gear is arranged on an output shaft of the head shaking motor. When the driving gear drives the driven rack to rotate around the head shaking rotating shaft, the driven rack drives the front shell to rotate around the head shaking rotating shaft at the same time through the head shaking connecting support, and the driven rack drives the front shell to rotate around the head shaking rotating shaft at the same time. Therefore, the front shell can rotate relative to the top support in a head shaking mode. The oscillating mechanism works smoothly, the probability of jamming and abnormal sound is reduced, and the service life of the fan is prolonged.

The application provides a door opening method of a double-door structure cutter head, and belongs to the technical field of tunneling methods. The door opening method comprises the following steps: firstly, rotating the first movable door to the lower part through cutter head rotation, connecting a hoisting device between the fixed disc body and the first movable door, controlling the first movable door to be opened through the release of the flexible hoisting member, and installing a locking member between the first movable door and the fixed disc body after the first movable door is opened; then, rotating the second movable door to the lower part through cutter head rotation, dismounting the hoisting device and installing it between the first movable door and the second movable door, and opening the second movable door through the recovery of the flexible hoisting member. The hoisting device is used to replace the oil cylinder configured separately in the prior art, only one set of hoisting device is arranged, the first movable door is locked after being opened, the hoisting device can be dismounted to hoist the second movable door, the hoisting device is used to the full, the opening angle requirement of the movable door can be met, enough pulling force can be borne, the method is safe and reliable, and the configuration cost is low.

In a sewing machine in which a head rotates, reduction in sewing efficiency is suppressed. The sewing machine has: a holding member that can hold a sewing object so as to move in a prescribed plane; a needle bar that holds a sewing needle to which upper thread is supplied; a head that can rotate about a rotation axis orthogonal to the prescribed plane in a state in which the needle bar is supported; a bobbin that rotates about the rotation axis in synchronization with the head, cooperates with the sewing needle by supplying lower thread, and forms a stitch on the sewing object; a movement control section that controls movement of the holding member based on sewing data; and a rotation control section that controls a rotation angle of the head and the bobbin based on a change amount of a movement direction of the holding member specified by the sewing data. The rotation control section controls in a manner in which the rotation angle coincides with the change amount when the stitch is formed on a first range of the sewing object, and controls in a manner in which the rotation angle becomes smaller than the change amount when the stitch is formed on a second range of the sewing object.