390results about How to "Location determination" patented technology

The invention relates to apparatus and methods for facilitating total hip arthroplasty.

The invention discloses a road barrier identification method and device. One specific embodiment of the invention comprises the steps of: obtaining laser point cloud of a barrier object on a road; based on the laser point cloud, obtaining mark information of the barrier object; and based on the mark information, generating training samples of a machine learning model. According to the invention, different type of mark information of the barrier objects are obtained based on the laser point cloud of the barrier objects, so that the sizes, positions and angles of the different kinds of barrier objects are accurately determined; and furthermore, based on the mark information of the barrier object, the training samples of the machine learning model for identifying the sizes, positions and angles of the different kinds of barriers using the laser point cloud of the barriers as input are generated, and the identification accuracy of the machine learning model is continuously improved.

A method for expressing a psychological change of a character according to a positional relation, in a ball game realized by a game apparatus. The method for moving a predetermined character according to an inputted operation, executing a ball game in which a plurality of characters including the predetermined character appear, and generating an image of a virtual space in which the plurality of characters are provided, on the basis of a view point, has: determining whether a positional relation between a ball possessing character which possesses a ball and a second character, of the plurality of characters, satisfies a positional condition, or not; and changing a movement ability of at least one of the ball possessing character and the second character, when the positional relation satisfies the positional condition.

The invention relates to the field of mobile communications and discloses a mobile terminal positioning method and a mobile terminal. In the invention, a position database comprising access point identification codes and the position information of local access points is stored in the mobile terminal, when being positioned, the mobile terminal first of all obtains the identification code of an access point near to a current position, then finds a corresponding position in the position database of the mobile terminal according to the access point identification code, and according to the signal intensity and the position of the access point, determines the position of the mobile terminal so that the interaction between the mobile terminal and a server is unnecessary, and the position of the mobile terminal can be rapidly determined without network connection or with quite little network connection.

The invention discloses a double threshold cooperative sensing method in a cognitive wireless network, comprising the following steps: 1. recovering a signal through local compressed sensing, and recovering the whole broadband frequency spectrum in the invention through the compressed sensing, thus a low-speed A / D commutator can be used, so as to lower the hardware requirement; 2. determining a sub frequency band, being capable of obtaining a frequency spectrum edge point of the recovered broadband frequency spectrum signal through the compressed sensing through a wavelet edge detection, and forming a plurality of sub frequency bands by segmenting the frequency spectrum; and 3. cooperative sensing: carrying out double threshold energy detection on all sub frequency bands by each cognitiveuser, transmitting the detection result to a fusion center for judgment to obtain the existing condition of the main user of the whole frequency spectrum, and self-adaptively determining the positionof the spectrum hole in the frequency band. Through the steps, the cognitive network can carry out sampling sensing on the main user signals under the condition of low nyquist frequency, and can self-adaptively determine the position of the spectrum hole in the frequency band.

In a local positioning system, a receiver is adapted for receiving signals from a land-based transmitter. The receiver includes an analog decorrelator for decorrelating the transmitted spread spectrum signals. A down converter connected with an antenna may be spaced away from other portions of the receiver. The down converter down converts received ranging signals and provides them to the remotely spaced receiver portions. A signal line connecting the down converter to the receiver may be operable to transmit any two or more of a reference signal provided to the down converter, the down converted intermediate frequency signals provided to the receiver, and power provided to the down converter. The receiver may be positioned adjacent to or as part of a land-based transmitter. By determining positions of two or more antennas, the location of the associated transmitter is determined.

The invention relates to the field of wireless network communication and particularly relates to a WLAN (Wireless Local Area Network)-based indoor positioning method and device. According to the WLAN-based indoor positioning method and device aiming at the problems in the prior art, the position of a mobile terminal can be determined after the mobile terminal sends a positioning request signal to a server unit through an AP (Access Point) unit, and furthermore, the fast positioning of an indoor position can be realized. The method comprises the following steps of: detecting and receiving signal strength of the AP unit by the mobile terminal, sending the positioning request signal to the server unit through the AP unit, receiving and analyzing the positioning request signal sent from the mobile terminal by the server unit, feeding analyzed position information of the mobile terminal back to the mobile terminal through the AP unit, and displaying the position information by the mobile terminal. The WLAN-based indoor positioning method and device are applied to the field of WLAN-based indoor positioning.

The invention discloses a human body detection and tracking method and device based on an unmanned aerial vehicle mobile platform and belongs to the computer vision field. The technical key points of the method comprise a human body detector training step, a target human body recognizer offline training step, a target human body detection step and a human body tracking step, wherein the target human body detection step is characterized by receiving a current video frame shot by an unmanned aerial vehicle, extracting object characteristic value in the current video frame, sending the object characteristic value to a human body detector, the human body detector judging whether a human body is detected according to the characteristic value, and if so, further sending the characteristic value to a target human body recognizer, the target human body recognizer judging whether a target human body is detected according to the characteristic value, and if so, labeling the characteristic value and adding the characteristic value to a tracking list; and the human body tracking step is characterized by predicating position of the target human body in the next video frame according to the coordinate position of the target human body in the current video frame.

The present invention belongs to automatic precise measurement device for replacing traditional binocular visual detection device, and is especially the detection of workpiece surface shape or object position and gesture with robot arm, six-dimensional wrist force sensor and elastic probe. The technological scheme includes obtaining the ideal coordinates in tool coordinate system of point on some object by means of the stress information of probe on the object surface, coordinate transforming to obtain the coordinates of the point in robot-based coordinate system, controlling the motion of robot terminal end via six-dimensional wrist force sensor information for well contact and shift of the probe on the measured surface to obtain serial coordinate information of points on the object surface and determine the position, gesture or surface geometric shape of the object in the robot-based coordinate system. Meanwhile, the robot may be also replaced with a video camera.

A patient-specific pelvic coordinate system is produced from a single near AP intra-operative image of the patient, obviating the need for use of a patient tracker.

The invention provides a refrigerator and a temperature measuring method based on infrared sensors. The temperature measuring method based on the infrared sensors includes the steps that the infrared sensors are used for sensing the temperatures in preset regions; the sensing results of the infrared sensors are collected every other preset time, and temperature sampling values are acquired; a continuous preset number of temperature sampling values are acquired, and the maximal sampling value and the minimal sampling value are screened out from the acquired temperature sampling values; the average values of the temperature sampling values in which the maximal sampling value and the minimal sampling value are screened out are calculated, and the average values serve as the temperature measured values of the infrared sensors. By the adoption of the scheme, the influences on measuring accuracy from measured value fluctuation of the infrared sensors can be avoided, temperature measuring accuracy is improved, the measured values can directly reflect actual temperatures of objects in the preset regions, and the accurate control basis is provided for following related control.

An improved system and method for determining a position of a mobile station in a mobile telecommunications system is disclosed. The system includes identifying a number of location measuring units (LMUs) for measuring the time of arrival of signals generated by the mobile station. In the event one or more of the LMUs is associated with a mobile switching center (MSC) other than the MSC serving the mobile station, then information pertaining to the identified LMUs and the other MSC is sent to the serving MSC. The serving MSC sends a position request message to those identified LMUs associated therewith, encapsulates the position request message and sends the encapsulated message to the other MSC. The other MSC thereafter unpacks the position request message and forwards the unpacked position request message to the identified LMU associated with the other MSC. Following the measuring of timing information, the LMU associated with the other MSC sends its timing measurement results to the other MSC, which thereupon encapsulates the results and forwards the encapsulated results to the serving MSC.

The invention provides a device for obtaining camera posture data. The device comprises a global positioning system, an acceleration sensor, a gyroscope and a core processor, wherein the global positioning system is used for obtaining the longitude and latitude of the camera position and the time; the acceleration sensor is used for measuring the speed of camera motion and the position of a camera in cooperation with the global positioning system; the gyroscope is used for measuring the direction of camera motion, a shooting angle and the rotation angular speed of the camera in cooperation with the global positioning system; the core processor is used for reading data of the global positioning system and data of each sensor corresponding to each frame of video, based on frame synchronizing pulse, further performing fusion and filtering treatment on the data to obtain position and posture data of the camera, and then outputting the position and posture data. The invention also discloses a method for obtaining camera posture data. The camera provided in the invention not only can shoot video and acquire voice, but also can obtain information on state, time and location of video shooting of the camera, which facilitates reproduction of the shooting scene in future.

A mobile communications terminal has a transmitter for transmitting a specific identification code of a reference base station as a time reference for network position determination. Therefore, a position server connected with a CDMA network can distinguish the reference base station from the other base stations regardless of positioning relationship between the mobile terminal and the base stations.

The invention relates to a multi-point positioning method for an infrared matrix touch screen. The multi-point positioning method comprises the following steps of: S1, predetermining the number of axes to be scanned and corresponding angles; S2, scanning the axes of different angles in sequence, and generating logic data reflecting axis touch information after processing; S3, combining data intervals obtained in scanning of the X axis and the Y axis to obtain possible touch points; S4, calculating the intersection of the scanning area corresponding to the data interval in a single inclined scanning direction and one touch area generated by S3, and updating the long axis and the short axis in the touch area if the intersection exists; S5, repeating Step S4, calculating intersections of scanning areas corresponding to data intervals in other inclined axial directions and the touch point updated in Step S4, wherein the point does not exist when the intersections of the scanning areas corresponding to all the data intervals in one direction and the touch point updated in Step S4 is 0; otherwise, the point may be a real point; and S6, repeating Step S4 and S5, and calculating other possible touch areas in Step S3.

The invention provides a refrigerator and refrigerator compartment inner temperature sensing method comprising the following steps: obtaining a plurality of temperature values measured by an infrared sensing assembly, wherein the infrared sensing assembly comprises a plurality of infrared sensing devices used for measuring the temperature of objects stored in a preset storage room of the refrigerator compartment; calculating a difference value between the maximum value and the minimum value of the temperature values; determining the maximum value weight coefficient and the minimum value weight coefficient according to the difference value; carrying out weighting and calculation for the temperature maximum value and the temperature minimum value by tacking the maximum value weight coefficient and the minimum value weight coefficient as the weight coefficients of the temperature maximum value and the minimum value; using the weighting and calculation result as the sensing temperature value of the storage room. The method can integratedly calculate and fuse the temperature data so as to obtain the measure value complying with the storage room real temperature, thus improving refrigerator compartment temperature detection accuracy.

The invention discloses a tunnel cable fault inspection system and method. The tunnel cable fault inspection system comprises an automatic running inspection vehicle and a locating unit for locating the inspection vehicle, wherein a control unit in wireless connection with a main control center of a control room, a signal acquisition unit for inspecting a cable in a tunnel, an illuminating unit for providing illumination for the signal acquisition unit, and a power supply unit for providing electrical energy are fixedly arranged on the inspection vehicle; the signal output end of the signal acquisition unit is connected with the signal input end of the control unit, the power supply unit is connected with the power ends of the control unit, the signal acquisition unit and the illuminating unit respectively; the signal output end of the locating unit is connected with the control unit. The tunnel cable fault inspection system has a simple structure, can automatically and completely inspect cables without requiring a worker to enter tunnels, can timely find cables with damaged appearance and cables with opened or falling clamps, and can timely maintain the cables to ensure travelling safety. The tunnel cable fault inspection system is suitable for inspecting cables in various road and bridge tunnels.

The invention provides a refrigerator and a temperature measurement error correction method for an infrared sensor. The method comprises the steps: determining the infrared sensor to be in a working state; obtaining a value, measured by the infrared sensor, of the temperature of a preset region in the working state; obtaining a corresponding correction constant corresponding to the infrared sensor, wherein the correction constant is obtained through the comparison of a value measured by the infrared sensor in a correction state with a standard temperature value; and employing the correction constant to correct the measurement value, so as to obtain a temperature correction value. Through the scheme of the invention, the method can reduce the impact on temperature measurement from the absolute error of the infrared sensor, improves the accuracy of temperature measurement, enables the measurement values to directly reflect the actual temperature of articles in the preset region, and provides accurate control basis for the subsequent related control.

The present invention relates to a method and a device for generating control data for controlling a prescribed cutter arranged on a machine tool to process a fixed workpiece to a finished product from a blank. In order to determine different configuration of a processing configuration and a finished configuration, the processing configuration model data and finished configuration model data of the workpiece are compared at a certain processing time. A processing path for removing material from the workpiece by the prescribed cutter is determined based on the determined different configuration, and path data is generated according to maximum processing quantity of the prescribed cutter to make the different configuration removed in a unit interval to be maximum.

A distributed method for reforming the multi-dimension heart image and interactively visualizing the reformed image includes such steps as downloading the 2D image sequence of the heart to be processed, transmitting it and processing request to server, 2D or 3D processing of said image sequence, transmitting the processed data from server to local user or remote user, and observing the resultant image via keyboard and mouse for local user or via browser for remote user.

The invention discloses a computation method of the transmission conductor wave amplitude and frequency based on a video monitoring technology, and belongs to the technology of video image processing. The method specifically comprises the following steps: taking the motion trail of a transmission conductor as a core during the transmission conductor waving, obtaining the transmission conductor wave characteristic by processing video images obtained by a camera and through the lowest and highest wave position maps of a conductor target image subjected to image gray processing, filtering, histogram equalization, segmentation and image matching, and then comprehensively mastering the conductor wave characteristic and the largest wave amplitude within a span through the computation of the transmission conductor wave amplitude and frequency. The method overcomes the detect that the conventional wave monitoring system cannot effectively obtain the conductor wave characteristic and the largest wave amplitude within a span, and ensures that the measurement results are more accurate and effective.

The invention relates to a rotor, a whole pole module assembling method of the rotor, a replacement method and a motor. The rotor is arranged on the outer peripheral surface of a motor stator in a sleeved mode, and comprises a rotor magnetic yoke, a plurality of pressing strips, a plurality of whole pole modules, and a plurality of fixed parts, wherein the rotor magnetic yoke is provided with an opposite mounting surface and outer peripheral surface in the radial direction; the plurality of pressing strips are distributed on the mounting surface at intervals along the circumferential directionof the rotor magnetic yoke, and the radial distance between each pressing strip and the mounting surface is adjustable; each whole pole module is detachably connected between every two adjacent pressing strips; the whole pole module comprises a carrier plate and a plurality of permanent magnets arranged on the carrier plate, wherein the carrier plate is attached to the mounting surface; each pressing strip is mounted on the mounting surface through the fixed part; and each fixed part has an operation part capable of extending from the outer peripheral surface. According to the invention, thewhole pole module formed by a plurality of permanent magnets can be integrally assembled or disassembled, and the whole pole module can be replaced without disassembling the motor stator and the rotor, so that the maintenance cost of the motor rotor is lowered.

A sensor arrangement for sensing a rotation angle on a rotating component in a vehicle includes a first measurement transmitter. The first measurement transmitter is coupled at a periphery with a predefined first transmission ratio to the rotating component. The sensor arrangement includes a second measurement transmitter coupled at the periphery with a predefined second transmission ratio to the rotating component. The first and second measurement transmitters are mounted on a common axis of rotation. The first and second measurement transmitters generate, in conjunction with a corresponding first and second to measurement recorder, data configured to determine the current rotation angle of the rotating component.

In one embodiment, a tape drive system includes a magnetic head having at least one servo sensor for track-following at least one defined servo track of a longitudinal tape, a tape motion controller configured to move the longitudinal tape past the magnetic head, a compound actuator configured to translate the magnetic head laterally with respect to the longitudinal tape, and a control configured to track-follow the at least one defined servo track by reducing a position error between the magnetic head and a desired position, transition from a write state to a monitor state when the position error is greater than a threshold, transition from the monitor state to a stop write state when the position error is greater than the threshold for a first period, and transition from the monitor state to the write state when the position error is less than the threshold for a second period.

The invention provides an attack positioning and assistant positioning device and method. The method includes the steps: sending position detection messages carrying an MAC (media access control) address A-MAC of an attacker to interchangers in a local area network after an attack behavior in the local area network is confirmed; receiving position response messages transmitted by the interchangers in the local area network, using the position response message carrying the maximum hop count as a target position response message, and determining the position of the attacker according to an access port corresponding to the A-MAC and carried by the target position response message and according to the interchanger transmitting the target position response message. The position response messages carry access ports corresponding to the A-MAC and the hop count between each interchanger and a gateway device. By the aid of the technical scheme, the position of the attacker in the local area network can be positioned, so that the attacker is isolated, and network security is ensured.

The invention relates to a method for operating an internal combustion engine in the event of a fault of a crankshaft sensor, wherein the internal combustion engine (1) has at least two camshafts (8, 9, 10, 11) and a rotational speed and / or a position of the internal combustion engine (1) is derived from a signal picked off from the camshaft (8, 9, 10, 11). To improve the exhaust-gas behaviour of the internal combustion engine even during a crankshaft emergency running phase, only a first camshaft (11) is used to determine the rotational speed and / or the position of the internal combustion engine (1), whereas the second camshaft (8, 9, 10) is adjusted in terms of its rotational angle in order to realize a variable valve drive at the inlet or outlet valves (6, 7), which are driven by the second camshaft (8, 9, 10), of the internal combustion engine (1).