204results about How to "Accurate location" patented technology

A method for the detection and localization of microseismic events is proposed which operates in real-time. It provides hypocenters in three spatial dimensions along with an estimate of the event origin time. Sensor positions may be distributed in 3D space, and are not confined to linear arrays in vertical wells. The method combines and improves two existing approaches. For detection and localization purposes the method makes use of the generalized beam-forming and forward modeling properties defined in the “CMM” algorithm. For location refinement, the method uses a stabilized version of the generalized “Geiger” approach.

A system and method or accurate location identification of a mobile cellular telephone in an indoor environment in case of emergency are provided. The system comprises elements of a distributed antenna system (DAS) and at least one location identification unit (LIU) coupled to the DAS and operative to extract the location of the mobile cellular telephone from RF signals obtained from the DAS. The LIU includes a receiver operative to receive the signals, preferably from a base unit (BU) of the DAS, and a processor operative to process the signals. The LIU obtains parameters of the emergency call that define a tuning window from an external system, and, using the tuning window, identifies a remote hub unit (RHU) of the DAS with the highest signal energy at the tuning window as the RHU through which the call was acquired. The location of the mobile cellular telephone is then determined as being in the area covered by this RHU.

A computer-readable recording medium recording a program capable of accurately analyzing the cause of a performance fault at the very end point of a client system, server system, etc. Outgoing and incoming packets are captured during execution of a communication application to measure a round trip time, and a communication window size of the transmitting source is estimated based on the captured incoming packets. A throughput estimate is calculated from the round trip time and the communication window size, and the estimated value and actual measured value of the throughput are displayed on, for example, a display, together with various other communication parameters including the communication window size and the round trip time, whereby the cause of a performance fault can be accurately located by quantitative analysis.

A three dimensional structure is precisely positioned at a desired location. A viral model of the structure of interest is created and stored in a computer memory. Some time later, remote sensors are placed in selected positions on the structure of interest. The sensors are configured so as to provide real time location, attitude and orientation information regarding the structure and may consist of GPS remote units, tilt meters, gyro compasses, and pressure sensor. The position of each the remote sensors on the actual structure is also recorded in the computer memory so that the virtual model accurately reflects the configuration of the structure. As the structure is being positioned, the real-time location, attitude and orientation information produced by the remote sensors is monitored at a base station and used to update the virtual model. In this way, the virtual model accurately reflects the current location, attitude and orientation of the structure. The information so obtained can be displayed to a user as a graphical and textual representation of the current state of the structure. The desired location, attitude and orientation of the structure is also displayed, thereby allowing a user to adjust the current location, attitude and orientation of the structure so as to align the current position of the structure to desired position. As built reports are produced upon completion of the positioning operation.

Items, including lost items or items out of place, can be located by attaching flickering LED's to them and moving about with a detector that registers the presence of the desired item or items by decoding the flickers. The flickers can substitute for, or augment, ordinary printed bar codes, and can use the same encoding so that the temporal pattern of flickering corresponds to the spatial pattern of black and white stripes in the printed bar code. The flickering items can be registered from a distance and from among a large group of other flickering items.

The invention discloses a coal mining two-dimensional physical simulation experimental device using a solid filling method and an experimental method, relating to the technical field of test or analysis of materials by measuring the chemical or physical properties of the materials. The experimental device comprises a two-dimensional physical simulation experimental table and multiple solid filling similar material molds, wherein rock physical models are stacked on the two-dimensional physical simulation experimental table; a simulation bracket is arranged in a coal mining layer of the rock physical models; the solid filling similar material molds are arranged in a goaf of the coal mining layer; pressure sensors are arranged on the simulation bracket and the solid filling similar material molds; and displacement monitoring points are formed in the rock physical models on the upper and lower sides of the goaf. The method is easy to operate and convenient to measure, and the compaction degree of the solid filling similar materials can be accurately set in advance.

The invention discloses a method and device for positioning an interference source, and the method and device provided by the invention are used for solving the problems of low accuracy and poor accuracy in positioning the interference source in the prior art. The method comprises: determining an angle of wave approach corresponding to an interference signal collected by each collecting point, and determining the path routing of the interference source passing the collecting points; determining the attribute information of each interference signal in each collecting point; and determining theposition of the interference source according to the attribute information of each interference signal in each determinate collecting point and the determined path routing of the interference source.Because the interference signals with identical attribute information are possibly the interference signals generated by the same interference source, the intersecting point of the path routing determined by the angle of wave approach corresponding to the interference signals with the identical attribute information in the embodiment of the invention serves as the position of the interference source, thereby eliminating the interference caused by the refraction of the signal by buildings and the interference generated by overlapping between different interference source signals effectively, so that the determined position of the interference source is more accurate.

The invention discloses a method and a device for implementing augmented reality (AR) and a terminal device, which is used for displaying corresponding AR information in real time on an image photographed by a user and improving the accuracy and the authenticity of AR information display. The method for implementing augmented reality comprises the steps of acquiring an image sequence of a photographed object; selecting at least one key-frame image from the image sequence, wherein the key-frame image can restore an image of local three-dimensional point cloud data of the photographed object, and the adjacent key-frame images meet a preset image spacing distance; determining a key-frame image with the photographing time being the latest as the current key-frame image; determining complete three-dimensional point cloud data of the photographed object according to the current key-frame image or the selected at least one key-frame image; acquiring AR information to be displayed; determining a display direction of the AR information on the current frame image according to the complete three-dimensional point cloud data and the current key-frame image; and displaying the AR information on the current frame image according to the display direction.

A method for determining change of direction of a vehicle includes steps of maintaining a rolling window of ABS data indicative of ABS tooth count and capturing a relevant rolling window of ABS data at the predetermined one-measurement point; storing the rolling window of the ABS data indicative of ABS tooth in a buffer; monitoring the ABS data and detecting a valid stop event which causes the rate of change of ABS tooth count to substantially decrement to zero; and monitoring the ABS data and detecting a valid move event which causes the rate of change of ABS tooth count to substantially increment from zero. The method also includes steps of determining a pre-stop phase relationship between at least two wheels based on the ABS tooth count stored in the buffer immediately prior to the valid stop event; determining a post-start phase relationship between at least two wheels based on the ABS tooth count stored in the buffer immediately subsequent to the valid move event; and correlating the pre-stop phase relationship and the post-start phase relationship to determine change of direction and confidence level.

A method for locating a touch position is provided. The method is adaptable to an optical touch panel, wherein the optical touch panel has a plurality of visible light sensors and a plurality of corresponding invisible light sensors that are arranged as an array. In the present method, sensing signals of the visible light sensors and the invisible light sensors are read. The sensing signal of each visible light sensor is converted into a first binary code according to a first setting parameter, and the sensing signal of each invisible light sensor is converted into a second binary code according to a second setting parameter and a third setting parameter. An AND operation is performed on all the first binary codes and all the second binary codes to obtain a plurality of logic operation values, so as to locate a position touched by a user on the optical touch panel.

The invention relates to a multipoint infrared touch screen. A plurality of infrared receiving units and infrared emission units are arranged on frames around the display surface of the multipoint infrared touch screen according to a certain sequence so as to form a vertically corresponding relation. The method for implementing the positioning of multipoint touch comprises the following steps of: starting the emission units on two opposite frames and finishing normalization of the receiving units; judging whether the touch screen generates touch deflection or not; switching the infrared emission units and three infrared receiving units corresponding to the emission units on in turn, and storing all values of a scanning receiving unit; reading a scanning value vertical to the scanning receiving unit, and comparing the scanning value with a normalized value; judging whether a touch point can be determined or not; further judging a possible touch point which is not accurately judged by using an infrared scanning record value which has a negative 45-degrees inclination angle; further judging uncertain individual touch points which are not accurately judged in the preceding step by using an infrared scanning record value which has a positive 45-degrees inclination angle; and finishing one scanning judgment cycle, and repeatedly starting a new cycle of multipoint touch judgment. The method has the advantages of uniform infrared coverage, clear inclination angle and no scanning dead angle.

An apparatus for selecting a satellite navigation system module includes a communication interface element and a selecting element. The communication interface element is configured to receive a first positioning message from a first satellite navigation system module, and to receive a second positioning message from a second satellite navigation system module. The selecting element is configured to compare a descriptive characteristic of the first and second positioning messages, and to select the positioning message having a preferred descriptive characteristic.

Systems and methods for locating the center of a lens in the eye are provided. These systems and methods can be used to improve the effectiveness of a wide variety of different ophthalmic procedures. In one embodiment, a system and method is provided for determining the center of eye lens by illuminating the eye with a set of light sources, and measuring the resulting first image of the light sources reflected from an anterior surface of the lens and the resulting second image of the light sources reflected from a posterior surface of the lens. The location of the center of the lens of the eye is then determined using the measurements. In one embodiment, the center of the lens is determined by interpolating between the measures of the images. Such a determination provides an accurate location of the geometric center of the lens.

The invention discloses a numerical control center sill combined drilling machine, which comprises a gantry main body, a lathe bed, side bases, conveying sticks, a fixture, a chip cleaner and a chip collecting box. The technical key points are that: two longitudinal ends of the lathe bed are fully symmetrically arranged; two longitudinal sides of the two-end gantry main body are provided with the side bases; each of the side bases is provided with a three-dimensional numerical control sliding table which is provided with a single spindle box; a longitudinal center line of the two-end gantry main body is uniformly provided with at least two conveying sticks; and each of the conveying sticks is at least provided with a connecting motor. The numerical control center sill combined drilling machine has the advantages of simple mechanical structure, rational configuration of processing elements and power and mechanisms, convenient production operation and maintenance, coordinate variable control scheme, improvement of equipment production flexibility, creation of favorable conditions for future production of various products, improvement of the pollution on field working environment due to hydraulic systems and cooling systems, aerosol cooling and chip cleaning, improvement of the pollution on the working environment, multipoint positioning and clamping, and guarantee of the reliability and the stability of machining precision.

A guided keeper assembly and method for metal forming dies includes a base having a flat mounting face and at least one marginal fastener aperture to detachably mount the base to an associated die shoe, as well as a central guide aperture. The assembly also includes a guide pin having a central portion closely received in the central guide aperture of the base for precisely guiding reciprocal motion between the die pad and an associated die shoe. The guide pin has an enlarged head at a first end thereof which abuts the mounting face of the base to positively limit travel between the die shoe and the die pad, and a shoulder at the opposite or second end thereof with an alignment mechanism that precisely locates the second end of the guide pin on the die pad. A first fastener extends through the marginal fastener aperture in the base to securely, yet detachably, connect the same with the die shoe. A second fastener securely, yet detachably, connects the second end of the guide pin with the die pad.

A carrier tray has a plurality of rectangular shaped carrier tray pockets, each pocket for holding a corresponding component tray. Two adjacent first sides of each carrier tray pocket include reference surfaces for accurately positioning two sides of a component tray that is positioned in the carrier tray pocket. Two adjacent second sides of each carrier pocket each include at least one protrusion from each side, the protrusions for compressing resilient members on sides of a component tray that is inserted in the carrier tray pocket, wherein the resilient members are for the purpose of urging the component tray against the reference surfaces of the carrier tray pocket.

The invention belongs to the technical field of image processing, and discloses a mine wire rope dynamic flaw detection method and device based on machine vision. The method comprises the following steps: recording video signals by continuously photographing a dynamic motion wire rope through a camera; processing the video signals, extracting a moving target to obtain a vibration track of each pixel point on the characteristic edge of the wire rope; and obtaining a flexibility matrix of the wire rope to be tested; and step S4, using a BP neural network after sample training to obtain damage positions and damage degrees of the wire rope to be tested; extracting damage location units, as ROI regions, determined by the BP neural network from a whole image, and storing the image as a new wirerope damage initial image; processing the wire rope damage initial image, extracting features of the wire rope damage initial image, and performing surface defect identification based on texture features by a linear classifier. The mine wire rope dynamic flaw detection method solves the problem of image detection errors, and has simple operation and low cost.

The invention relates to an adjustable tray lifting device used for an automatic stock bin. The adjustable tray lifting device mainly comprises a workpiece clamping mechanism, a tray positioning mechanism and a tray lifting mechanism. The workpiece clamping mechanism adopts a three-rod-guided adjustable tray clamping technology. The tray positioning mechanism comprises needle bearing installation bases, needle bearings, an upper supporting base, a lower supporting base, a cylinder, an ejector head, a cylinder flange and a profiling block. The tray lifting mechanism comprises bottom plates, ejector polished shafts, linear bearings, a polished shaft upper fixing plate, ball screw nuts, a polished shaft lower fixing plate, ball screws, motors, bearing blocks, angular contact ball bearings, deep groove ball bearings and proximity switch supports. The bottom plates, the polished shaft upper fixing plate and the proximity switch supports vertically installed on the bottom plates are fixed through bolts, and fixation relative to the bottom plates is maintained. The adjustable tray lifting device has the advantages that the problem that use functions are affected due to large workpiece accumulative errors is effectively solved, production cost is reduced, high-efficiency energy conservation is achieved, the positioning position is precise, and the application range is wide.

The invention relates to the field of semiconductors and liquid crystal displays, in particular to a dual-sided processing method and an exposure device in a processing process of a semiconductor and a liquid crystal display. The dual-sided processing method comprises the steps of: in an exposure process, firstly, aligning two optical masks in an exposure device, then conveying a substrate to a place between the two optical masks of the exposure device, and finally making patterns on two sides of the substrate. The exposure device comprises two optical masks, wherein the substrate to be processed is arranged between the two optical masks, and an optical mask alignment identifier is arranged on each of the two optical masks. According to the invention, during the dual-sided processing process of patterns of the substrate, the optical masks are aligned in advance, the accuracy of the patterns on two sides of the substrate is ensured, and the product quality is ensured.

The invention relates to an LED (light-emitting diode) intelligent illumination energy-saving control method based on Internet of things, wherein the control method comprises the following steps that: (1). a sensor installed on an LED intelligent terminal collects status information relevant to an LED lamp; (2) the sensor transmits the collected information to the LED intelligent terminal; (3) the LED intelligent terminal stores the received relevant information; (4) the LED intelligent terminal transmits the received relevant information to a central server through a communication control network; (5) after receiving the information, the central server identifies the information according to the set rule; (6) the central server determines whether to interfere with the received relevant information according to the concrete service type; (7) the central server sends an interference instruction to the LED intelligent terminal through the communication control network; and (8) the LED intelligent terminal processes the received interference instruction. The control method provided by the invention has the advantages of energy conservation, high management efficiency and the like.

A hand tool is used to automatically and precisely define a starting hole that will accommodate an element such as a self-tapping screw, a drill bit, or the like. The hand tool has a leading section that automatically orients and locates a punch rod that will be actuated by means of a trigger mechanism to define the starting hole.

The invention relates to the field of digital image processing, and discloses a depth image post-processing method. The depth image post-processing method includes the steps that up-sampling is carried out depth images firstly through the adoption of a classic interpolation algorithm with the lower time complexity; two times of post processing including edge line correction and boundary area repairing are carried out on the depth images obtained after up-sampling. By means of the technical scheme, boundaries of the depth images can be coincident with geometrical boundaries of images in corresponding colors through boundary correction while the good subjective visual effect of the up-sampling depth images is improved, the quality of synthesis viewpoints is effectively improved, and the fuzzy boundaries caused by up-sampling are eliminated.

The invention discloses an underwater detector recycling positioning device, which can be used to solve the difficulty in recycling the underwater detectors. An explosive bolt (4) is disposed between a bottom part of a buoy connecting barrel body (2) and a buoy sealing body (3), and the outer side surface of the buoy connecting barrel body(2) is connected with a compression spring (7) in a sleeved manner. The buoy sealing body (3) is respectively provided with a control circuit board power supply lithium battery (14), a GPS signal transmitting module (11), a single-chip microcomputer (9), an explosive bolt detonating controller (10), and a water depth sensor (8). The single-chip microcomputer (9) is respectively electrically connected with the GPS signal transmitting module (11), the explosive bolt detonating controller (10), and the water depth sensor (8). The outer side top surface of the housing of the buoy sealing body (3) is provided with a buoy (12), and the boat or the shore is provided with a GPS signal receiver. The underwater detector recycling positioning device is advantageous in that the position of the underwater detector can be accurately identified.

The invention discloses a corner carton sealing machine. The corner carton sealing machine comprises a machine main body, a carton inlet mechanism, a conveying mechanism, a tape pasting mechanism and a brushing leveling mechanism, wherein the carton inlet mechanism is fixed at an inlet of the conveying mechanism; the tape pasting mechanism is fixed to the machine main body; and the brushing leveling mechanism is fixed to the machine main body and located behind the tape pasting mechanism. The corner carton sealing machine is simple in structure, and the conveying mechanism can maintain the position of a carbon stable in the whole carton sealing process, so that the negative phenomena that a carbon deflects and falls off in the conveying process and the pasting position of adhesive tape is prone to deflecting are avoided, and the production quality and efficiency are improved remarkably.

The invention relates to an RFID base station unit for indoor positioning. The RFID base station unit comprises a plurality of RFID readers/writers and a control unit. The control unit controls the plurality of RFID readers/writers to send data requests, and RFID electronic tags in an influence range carry out response; after the RFID readers/writers receive signals returned by the RFID electronic tags, data carried in the signals is read and transmitted to the control unit; and the control unit processes the data sent by the at least two RFID readers/writers to obtain positioning information and uploads the positioning information to a server through a network. The RFID base station unit for indoor positioning provided by the invention has the following beneficial effect that the relatively accurate positions of the RFID electronic tags in the influence range of the RFID base station unit can be determined relatively accurately.

The invention discloses a method for transforming a written text into an oral text. The method comprises the steps that to-be-transformed source text data is received; word segmentation and vectorization processing is performed on the source text data, and a word vector sequence of each source text data sentence is obtained; the word vector sequences of all the source text data sentences are sequentially input into a text transformation model constructed in advance, and target text data corresponding to the source text data is obtained according to output of the text transformation model; andparalanguage information is interposed into the target text data, and oral text data with the paralanguage information is obtained. By use of the method, the oral text obtained after transformation can better conform to the oral expression habit.

The invention belongs to an assembling technology of a composite material and relates to a production method for an assembling hole of a composite material part. The production method for the assembling hole of the composite material part is characterized in that after the composite material part is pressurized and cured at high temperature, and when a mold to be formed and the composite material part restore to normal temperature, a drilling jig is positioned and pressured. The drilling jig is divided into a bottom and a drilling part which are integrated; the bottom and a molded surface of a forming mold are attached and fixed; a drilling area is positioned above the part; and a drilling bushing sleeves the drilling area for drilling. The assembling hole of the composite material part, produced by the production method disclosed by the invention, is free of influence from curvature and overall dimension of products, is accurate in position and can be coordinated with a positioning hole in an assembling workshop; and the demand of actual assembly is met, and the assembling precision of an airplane is effectively improved.

The invention discloses an MLE-PSO indoor positioning method based on an RSSI (Received Signal Strength Indication). The method comprises the following steps: setting a plurality of base stations in an indoor environment, acquiring an RSSI value of each base station by a receiving terminal, and measuring a distance value between the receiving terminal and each base station; acquiring an estimated position by using maximum likelihood estimation, wherein each base station is corresponding to one estimated position, and determining a limited range by an area in which a plurality of estimated positions are located; initializing each parameter of a particle swarm optimization algorithm, and generating a particle swarm within the limited range at random; and an using the particle swarm optimization algorithm to calculate a global optimal solution of the particle swarm, in the particle swarm optimization algorithm, taking the above limited range as the limit, and selecting the most suitable global optimal solution as the estimated position output. The method of the invention obviously improves the indoor positioning accuracy, and meanwhile guarantees the computation speed of a positioning algorithm, the amount of data collection required for positioning, the number of iterations and other dynamic performances.

Embodiments of the invention relate to the technical field of robots, and disclose a laser radar positioning method. The method comprises the steps of obtaining multiple frames of point cloud data acquired by laser radar in a preset time window; determining a base coordinate system corresponding to each frame of point cloud data; converting the multiple frames of point cloud data to a same base coordinate system so as to obtain synthesized point cloud data; converting the synthesized point cloud data to a world coordinate system so as to obtain reference point cloud data of the synthesized point cloud data under the world coordinate system; and matching the reference point cloud data with a preset point cloud map so as to obtain an accurate position of the laser radar. According to the method, the multiple frames of point cloud data are synthesized into one frame of synthesized point cloud data, and the accurate position of the laser radar is determined according to the synthesized laser radar, so that the laser radar positioning precision is improved.

The invention provides a circular-disc type precision drill seeding device of small-seed crops. The device comprises a bracket, a front roller, a rear roller, a plurality of seeding mechanisms and an engine, wherein each seeding mechanism comprises a sleeve, a seeding box for containing seeds and a seeding box case; a furrow opener is arranged at the lower end of each sleeve, and the upper end of each sleeve is fixedly connected with the corresponding seeding box case; a case opening penetrating through the sleeve is formed in each seeding box case; the bracket is further provided with fixed connecting rods for connecting the sleeves; each seeding box is of a round structure formed by a first sector-shaped seeding disc and a second sector-shaped seeding disc, which are in butt joint; seed discharging holes are formed in the outer peripheries of the first sector-shaped seeding discs; one side face of each first sector-shaped seeding disc and one side face of each second sector-shaped seeding disc, which are arranged adjacently, are sealed; the other side faces, which are arranged adjacently, of each first sector-shaped seeding disc and each second sector-shaped seeding disc are communicated with each other; seeds passing through the seed discharging holes drop off from the case openings and fall into seed furrows opened by the furrow openers through the sleeves. When the device is used for seeding, the device does not slip and has a good compaction effect, and a precision seeding effect with less thinning is realized.