117results about How to "Short positioning time" patented technology

The invention relates to a method and device for carrying out the vehicle positioning in a parking lot. The method is used for a server, and comprises the steps: obtaining the actual receiving signal intensity indication information of an intelligent terminal at a current position and an instant scene image when a server communicates with the intelligent terminal on a vehicle entering the parking lot; determining a pre-stored scene image corresponding to the actual receiving signal intensity indication information according to the actual receiving signal intensity indication information and a pre-built position fingerprint map of the parking lot; and determining the current actual position of the vehicle in the parking lot according to the pre-stored scene image and the instant scene image. Therefore, the method can achieve the positioning of the vehicle in the parking lot without other operation and maintenance equipment in the parking lot, and reduces the positioning cost. In addition, even if a GPS signal is weak or there is no GPS signal, the method also can achieve the high-precision positioning, is short in positioning time, and improves the parking experience of a user.

The invention discloses an indoor cloud robot angle positioning method based on position and visual information optimization. In the invention, firstly an RFID reader and writer receives signal intensity RSSI emitted by an active label, an approximate location coordinate is preliminarily calculated and positioned, and an approximate scope of a location where a mobile robot is located is determined, and then when a positioning method of image search is used, a search scope of an image database only needs to be in an error range. Therefore, the search scope of the image is reduced, a positioning speed and accuracy are increased. In the invention, cloud calculating configuration is used; data acquisition is completed by a mobile robot terminal which is a client; data calculating is completed by cloud; and a calculating speed and a storage capability of the cloud are greatly increased. The two positioning methods are combined and a cloud calculating mode is used so that time needed by the positioning is shortened and an accurate position coordinate and angle information can be acquired.

The method comprises: according to the location request information of core network, location capability of subscriber equipment and information about cell type, the radio network control (RNC) selects an initial location method to make location process; if satisfying the location requirement, then ending the location process; if location process failures, according to the location capability of user and the type of accessed cell, making a location degradation process; after the location method is selected, using the selected location method to locate the mobile station.

The invention relates to a safe positioning method of a wireless sensor network, comprising three stages, namely a doubtful node recognition stage, a malicious node isolation stage and a node position safety calculation stage, wherein in the doubtful node recognition stage, anchor nodes are cooperated mutually, broadcast information packets in a hopping communication range, detect doubtful nodes according to whether the information packets are abnormal, and record ID (identification) information of corresponding doubtful nodes; in the malicious node isolation stage, the anchor nodes report the ID information of the doubtful nodes to a base station which is carried out safety level area division on the wireless sensor network and isolated malicious nodes; and in the node position safety calculation stage, as for the main anchor node and the auxiliary anchor nodes in areas with higher safety level preferably, the calculation of sensor nodes is finished by a passive positioning algorithmbased on time difference. In the safe positioning method, the malicious nodes are effectively detected and isolated, the influence of the malicious attack to the positioning process is reduced, the positioning accuracy is improved, the energy consumption for positioning is saved and the life cycle of the network is prolonged.

The invention relates to the technical field of the indoor positioning, and provides an indoor positioning method based on LSTM and multi-sensor fusion. The indoor positioning method comprises the following steps: firstly collecting triaxial acceleration, triaxial magnetic value, triaxial angular speed and location coordinate data of the pedestrian through an accelerometer of a mobile phone, a geomagnetic sensor and a gyroscope, and preprocessing a data set; performing coarse positioning on the pedestrian by utilizing WiFi information, and computing an initial location of the pedestrian; performing step counting on the pedestrian by utilizing the triaxial acceleration data and performing the step length estimation; performing direction estimation on the pedestrian by utilizing the triaxialmagnetic force value data and the triaxial angular speed data so as to form a pedestrian motion model, and then estimating the pedestrian location; and then constructing and training a LSTM model forpedestrian positioning, and predicting the pedestrian location by utilizing the trained LSTM model; and finally performing Kalman filter fusion on the pedestrian location computed in previous two steps, thereby accomplishing the pedestrian positioning. Through the indoor positioning method disclosed by the invention, the indoor positioning precision can be improved, the cost is low, and the deployment is easy.

A navigation signal transmitting apparatus and a location information providing apparatus are provided for reducing time of positioning with a positioning signal from an indoor positioning transmitter. When an information providing server recognizes a transmitter ID of a transmitter from a mobile phone, the server makes reference refers to database associated with the transmitter ID, and reads SVG map information associated with the ID (including information for displaying a map and information of a correspondence relation between the transmitter ID and the location of the transmitter on the map). When the server transmits data of the SVG map information to a base station, the base station wirelessly emits the data of the SVG map information. When the mobile phone detects arrival of the data, the mobile phone can obtain the location of the transmitter from the data in accordance with a browsing operation of a user of the phone.

The invention discloses a multiple NaI (T1) detectors based radioactive substance two-dimensional locating method in an access control detection system. A two-dimensional locating model of a radioactive substance is determined through the measurement of the attenuation law of gamma rays and the change of the azimuth angle of the radioactive substance at different positions relative to a detector. The energy resolution capability of the NaI detector is utilized to recognize the radioactive nuclide, and the problems of mutual interference of different radioactive nuclides and simultaneous location of different radioactive substances can be effectively solved under a multi-source condition. According to the method, a maximum characteristic peak counting detector with high counting capability, a detector at the opposite side and a second largest characteristic peak counting detector at the opposite side are adopted, situations that the location error is increased and even a position close to the edge cannot be located due to the influence of statistical fluctuation on the counting value of the detector when the solid angle of the radioactive substance on the detection surface of the detector is too small or the attenuation distance is overlong are avoided, and the method has the advantages of short measurement time, high location accuracy and the like.

The invention discloses a multifunctional waistband which comprises a waistband pike and a waistband pike release buckle, and is characterized in that a containing cavity is arranged in the waistband pike; a satellite navigation positioner is arranged in the containing cavity; a switch of the satellite navigation positioner is the waistband pike and the waistband pike release buckle; the satellite navigation positioner is started and works when the waistband pike is buckled with the waistband pike release buckle; and the satellite navigation positioner is shut down when the waistband pike is not buckled with the waistband pike release buckle. The multifunctional waistband is convenient to carry, and difficult to lose, and is provided with various positioning navigation systems; the precision and the reliability of navigational positioning are improved greatly with the mutual assistance of the systems; the positioning time is short; a positioning speed is high; an error is prevented from being accumulated with time lapse and travel increase; and the waistband is provided with multiple extended function accessories, so that the waistband is complete in function, and is very suitable for outdoor adventure and field exploration.

A difference between each position command data outputted in a form of a step signal from a high-level controller and its corresponding detected position data of a movable body is integrated by an integral compensator to position the movable body. Assuming, for example, that the movable body is a steerable mirror, digital filters are arranged to compensate the value of an initial state of an angular displacement and the value of an initial state of an angular velocity, respectively, and respective impulse responses of the digital filters as additional input elements are added to an output terminal of the integral compensator. For higher effectiveness, internal state variables of the digital filters can desirably be cleared to zero whenever an angle (position) command data is received.

A mixed positioning method includes starting up normal assisting - positioning process first by mixed positioning terminal when positioning request sent from user is received, sending request of positioning assistance data and radio network cell identification number to server, catching satellite signal and measuring pseudo-distance by GPS signal receiver after assistance data is obtained, sending measured result and radio network cell identification number again to server then carrying out treatment on data by server. The mixed positioning terminal used for realizing said method is also disclosed.

The invention discloses a robot chess opening arranging method and system based on target outline and skeleton characteristics. In the method, a chess piece positioning and identifying method of primary coarse positioning, region segmentation, secondary accurate positioning and extraction based on the target outline and skeleton characteristics combined with a SVM multi-classifier part is provided, and the automatic arranging function at the opening stage of an intelligent chess robot is achieved. The system is formed by a common Chinese-chess chessboard, chess pieces, a uArm four-degree-of-freedom mechanical arm, a sucking disc, a camera, a light source, a control system based on a PC and the like; the whole system is simple in structure and easy and convenient to operate, the full-automatic arranging function of the robot can be completed before man-machine chess playing is conducted, and the system has the good stability in the relatively-complex environment.

The invention discloses an antitheft system for a motorcycle. The antitheft system comprises a GPRS (general packet radio service) transmission circuit, a GPS (global positioning system) positioning circuit, an anomaly detection circuit, an external alarm circuit, a power circuit, a Bluetooth circuit and a processor control circuit. The anomaly detection circuit is in communication connection with the processor control circuit, the processor control circuit is in control connection with the external alarm circuit, and the GPS positioning circuit and the external alarm circuit are in communication connection with external equipment by the GPRS transmission circuit or the Bluetooth circuit; the power circuit comprises an external power source, a built-in power source and a charging circuit. The antitheft system for the motorcycle has the advantages that the antitheft system is ultra-low in power consumption during sleep, has short positioning time of 1S during service and has a server APP (application) antitheft reminding function and a host module short-message reminding antitheft function, the power sources can be automatically switched over, built-in flash and fault diagnosis are integrated with each other, and firmware and flash firmware can be remotely upgraded.

The invention discloses a positioning method and system based on satellite base stations, for solving the technical problems of long receiver calculation time, large energy consumption and positioning incapability at places with weak satellite signals when a conventional satellite positioning system carries out positioning. The method comprises the following steps: establishing the multiple satellite base stations covering a target area; a receiver obtaining positioning signals sent by the satellite base stations, wherein the positioning signals carry position information of the satellite base stations; according to the positioning signals, calculating the distances between the receiver and the satellite base stations; and according to the position information of at least two base stations and the distances from the at least two satellite base stations, calculating the position of the receiver.

The invention belongs to the technical field of chemical adhesives, and relates to a polyurethane moisture-curable hot-melt edge sealing adhesive and a preparation method thereof. Based on weight part, the polyurethane moisture-curable hot-melt edge sealing adhesive comprises the following components: a polyester polyol mixture, diphenylmethyl diisocyanate, a plasticizer, a chain extender and a tackifying resin, wherein the polyester polyol mixture has the relative molecular weight of 1,000-7,000 and is one or more of PHL-1600, PH-2000, CMA-1044 and CMA-44; and the polyurethane moisture-curable hot-melt edge sealing adhesive does not contain any organic solvent, has the solid content of 100 percent, is short in positioning time, quickly and accurately adhere between a decorative film and a to-be-decorated base material, has high adhesive strength and high peel strength, can prevent the influence of water and other adverse environmental factors, has a flexible and elastic adhesive layer and can resist mechanical impact of edge parts in the subsequent polishing decoration process.

The invention discloses a positioning method suitable for underground targets of a coal mine. The positioning method comprises the following steps that first, a positioning area is divided into N positioning datum points i, wherein N is an integer larger than 0; second, the RSSISample of the 'fingerprint feature' of each positioning datum point is sampled; third, collected RSSISample values are filtered to generate the 'fingerprint feature'; fourth, positioning algorithm operation is conducted based on the filtered 'fingerprint feature' in the third step; fifth, errors are analyzed, and a result is output. According to the 'fingerprint feature' positioning method for the underground targets of the coal mine based on the RSSI values, experiments show the effectiveness and the feasibility of an algorithm, high robustness is achieved for environmental conditions, positioning precision and system real-time performance can also meet the requirement of a coal mine positioning system, and important practical significance is achieved for guaranteeing coal mine safety production.

The invention discloses a desktop automatic test development method and system. The system comprises a locator developed in C + + language, a dynamic link library dll developed in C language and C + +language and exposing C language interface, and a kernel developed in C + + language for generating an exe file. The invention can efficiently position desktop elements by improving the search algorithm only requiring four elements, and the 4 elements can be identified by specially developed locators, which is much better than the same kind of software autoit abroad and can be more accurate in location and recognition. The invention also overcomes the problem that the scope of the Webdriver is only limited to the part of the browser webpage display area, and the part beyond the webpage area can be controlled. The invention can support various languages, such as C + + language, Java language, C# language, Python language and other mainstream test development common languages.

The invention provides a method and system for positioning eyes. The method includes the steps that a plurality of images are preprocessed and then serve as input samples, and a plurality of eye position coordinates are preprocessed and then serve as target samples; a combined classifier is trained by means of the input samples and the target samples; images to be positioned are preprocessed and then input to the combined classifier, so that eye position coordinates corresponding to the images to be positioned are obtained. According to the method and system, the eyes can be positioned quickly and accurately.

The invention discloses a portable percutaneous puncture locating device and a locating method implemented via the device. The device comprises a locating frame, a rotary piece and a scale ring, wherein an arc-shaped groove is formed in one end of the locating frame, and angle scales, along the circumferential direction of the arc-shaped groove and the outer wall surface of the scale ring, are arranged on the outer wall surface of the end; the rotary piece comprises a locating end and a rotating end; the locating end of the rotary piece is overlapped with the circle center of the arc-shaped groove; a power unit, by which the locating end of the rotary piece can be driven to rotate, is arranged in the locating frame; the rotary piece can move along a radial direction of the arc-shaped groove; one end of the scale ring is connected to the rotary piece, so that a plane where the scale ring is located is perpendicular to a plane where the end of the locating frame is located; a guide blockis connected to the scale ring; a guide hole, in which a puncture needle is inserted, is formed in the guide block; and a central shaft of the guide hole points to the circle center of the arc-shapedgroove. The puncture guidance device provided by the invention is simple in structure, easy to disinfect and low in cost; and the device is simple and convenient to operate and relatively short in locating duration, and radiation quantities to a patient and operators can be reduced.

The invention aims to provide automatic positioning equipment for a body-in-white stamping part. A framework of which the top inclines upwards from front to back is arranged; third supporting wheel mechanisms, second supporting wheel mechanisms, first supporting wheel mechanisms and fourth supporting wheel mechanisms are arranged, wherein the top ends of the third supporting wheel mechanisms, the top ends of the second supporting wheel mechanisms, the top ends of the first supporting wheel mechanisms and the top ends of the fourth supporting wheel mechanisms form an inclined surface inclines downwards from left to right, and the third supporting wheel mechanisms, the second supporting wheel mechanisms, the first supporting wheel mechanisms and the fourth supporting wheel mechanisms are used for supporting the stamping part; first guiding wheel mechanisms and second guiding wheel mechanisms are arranged for conducting limiting guiding on the stamping part; and thus, the stamping part slowly rolls to the reference position finally, and the positioning requirement is met. Flexibly positioning is adopted without driving, the positioning time is short, the structure is simple, faults are small, and the operation time is short; and the precision is high, the equipment investment cost of manufacturing of multiple vehicle models and the labor investment cost are greatly reduced.