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306results about How to "Ensure positioning accuracy" patented technology
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Indoor location and navigation method and device based on LED lighting
ActiveCN105353347ALow costAchieve comprehensive location coveragePosition fixationEffect lightEngineering
The invention provides an indoor location and navigation method based on LED lighting. Each LED has a programmable ID code, each LED lamp has a different and unique emitting power change mode, a visible data light signal which can be identified by a receiving end is formed, and the programmable ID codes are emitted in the form of time division multiplexing; the receiving end parses the received data light signal, and calculates the received power from different LED lamps; and the initial 3D coordinates of the receiving end are calculated according to a location algorithm, and the initial 3D coordinates are modified through a nonlinear fitting algorithm. The invention correspondingly provides an indoor location and navigation device applied to the method. The brightness change of the LEDs cannot be identified with the naked eye, and thus, an LED lighting system is built. The method can still provide precise location service for users when an individual LED is abnormal. By correcting the coordinates through the nonlinear fitting algorithm, centimeter-level location accuracy is guaranteed.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
Multi-AUV self-adaptive target searching and obstacle avoidance method oriented to unknown environment
ActiveCN108594834AEnsure positioning accuracyImprove search coverageAltitude or depth controlControl theoryArea coverage
The invention discloses a multi-AUV self-adaptive target searching and obstacle avoidance method oriented to an unknown environment, and the method is suitable for multi-AUV target searching under anunknown complex underwater environment. The method is mainly divided into three modes including a target mode, a non-target mode, and an obstacle avoidance mode. In the target mode, the self-adaptivesearching is achieved through dynamic real-time prediction according to the target information for sensing the outside; in the non-target mode, full-area coverage searching and collaborative planningtasks are achieved through a sub-area strategy; and in the obstacle avoidance mode, the barrier threat is avoided in real time based on the improved dynamic window method. According to different underwater environment information, a multi-AUV target searching task is executed through alternate mode switching among the three modes, and the uncertain information under the unknown water can be dealtwith, the credible interval of the target state information is guaranteed, and environment adaptability and searching efficiency are achieved.
Owner:HARBIN ENG UNIV
Improved position fingerprint indoor positioning method
InactiveCN105960021AReduce complexityNarrow targetPosition fixationWireless communicationTarget rangeFingerprint database
The invention discloses an improved position fingerprint indoor positioning method. The method comprises an offline stage and an online stage. The method is characterized in that the offline stage comprises the steps of establishing a position fingerprint database by use of reference points and APs, and classifying data in the fingerprint database through a K-means clustering algorithm and obtaining the class cluster to which the to-be-tested point belongs; and the online stage comprises the steps of matching the to-be-tested point with the fingerprint of the class cluster by use of a Bayesian probability algorithm, thereby calculating the position coordinate of the to-be-tested point. According to the improved position fingerprint indoor positioning method, the K-means clustering algorithm is combined with the Bayesian probability algorithm; the data in the fingerprint database is classified by use of the K-means clustering algorithm, thereby obtaining the class cluster to which the to-be-tested point belongs; therefore, the target range is greatly reduced; the to-be-tested point is matched with the fingerprint of the class cluster by use of the Bayesian probability algorithm; and therefore, according to the position fingerprint positioning algorithm, the positioning precision is ensured, the complexity of the algorithm is reduced, the efficiency is improved, and the algorithm has practical value.
Owner:济南东朔微电子有限公司
Portable vehicle recognition device base on embedded platform
InactiveCN101692313AVersatileEasy to carryDetection of traffic movementCharacter and pattern recognitionCharacter recognitionData transmission
The invention discloses a portable vehicle recognition device base on an embedded platform, belonging to the technical field of traffic and vehicle management. A camera, a display or a touch screen, a wireless transmission (GPRS) module, a radio frequency identification card (RFID) reader, a global positioning (GPS) module are arranged on the embedded platform to form a portable device which integrates set data acquisition, data display, data processing, self location, data transmission and communication function as a whole, so that the recognition of licence plate images comprising five key links, such as image acquisition, image preprocessing, licence plate location, character segmentation and character recognition is realized, and the image acquisition and processing are directly completed in the portable device. The device has the advantages of convenient carrying, rapid location, high flexibility, high efficiency, high accuracy, high reliability, low cost and high quality, and is recommended to be used in the field of traffic and vehicle management.
Owner:EAST CHINA NORMAL UNIVERSITY
Semiconductor inspection apparatus and manufacturing method of semiconductor device
InactiveUS20060139042A1Ensure positioning accuracyStable contact resistanceElectrical measurement instrument detailsElectrical testingDevice materialSemiconductor chip
When electrical properties of semiconductor chips of a semiconductor wafer are inspected by bringing plural contact terminals disposed on the principal surface of a probe sheet of a probe cassette constituting a semiconductor inspection apparatus into contact with plural electrodes of the plural semiconductor chips on the principal surface of the semiconductor wafer which is disposed so as to face the principal surface of the probe sheet, the air pressure of the space formed between the facing surfaces of the principal surface of the probe sheet and the principal surface of the semiconductor wafer is reduced so as to suck the semiconductor wafer toward the side of the principal surface of the probe sheet and deform mainly the semiconductor wafer, thereby pressing the plural electrodes of the plural semiconductor chips of the semiconductor wafer against the plural facing contact terminals of the principal surface of the probe sheet.
Owner:RENESAS ELECTRONICS CORP
Location information management method, platform and system
ActiveCN101938692AAchieve positioningLower requirementLocation information based serviceTransmissionGeographic sitePoint-to-Point Protocol
The invention provides location information management method, platform and system, and relates to the field of mobile communication. The location information management method for a mobile terminal comprises the steps of: sending a charging message including a user ID and base station ID information of the mobile terminal by a P-I gateway to an AAA server and the location management platform after the mobile terminal establishes PPP (Point-to-Point Protocol) connection with a network through the P-I gateway; obtaining the user ID and base station ID information of the mobile terminal by the location management platform from the received charging message; searching a geographical location description corresponding to the base station ID in a base station geographical database by the location management platform; binding the geographical location descriptions corresponding to the user ID and the base station ID by the location management platform, and storing in a user / location database for offering the location information of the mobile terminal for users requesting a location business. The invention can provide required user location information services for various applications requiring the location information.
Owner:CHINA TELECOM CORP LTD
LED indoor positioning navigation method and positioning navigation system
ActiveCN105865458AImprove channel utilizationPrecise Weighted Positioning CoordinatesNavigational calculation instrumentsPower flowInvalid Data
The invention provides an LED (Light Emitting Diode) indoor positioning navigation method and a positioning navigation system. An LED lamp serves as an emitting terminal; an emitting terminal driving device is used for controlling the strength of current so as to cause the change of brightness of the light and transfer the physical position data; the data frame with clear hierarchy of code element information is designed; zero bit filling is introduced into the sending and receiving of the data frame, so as to realize the transparent transmission and distinguish the frame header, the verifying code of the physical position information and the frame tail; the frame header has a specific coding sequence and can be detected, so that the validity of the data frame can be judged; the frame length of data frame can be analyzed; the invalid data frame can be timely detected and abandoned; different sizes of LED lamp sets with grid unit topology network structures can be designed according to different illuminating areas; only one of the LED lamps of a positioning unit is used for emitting the data frame at each time slot, and meanwhile, the other LED lamps all emit equidistant full zero data frames; the inter-symbol interference and the background noise are extremely reduced; the safety and reliability of the data frame are ensured.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
Key point detection method and apparatus, storage medium and electronic device
InactiveCN108229282AEnsure positioning accuracySmall amount of calculationCharacter and pattern recognitionNeural architecturesVideo sequenceOptical flow
Embodiments of the invention provide a key point detection method and apparatus, a storage medium and an electronic device. The key point detection method comprises the steps of obtaining video optical flow data according to first video frames and second video frames comprised in a video sequence, wherein the video optical flow data is used for indicating displacement data of pixels between the second video frames and the first video frames, and the second video frames include at least one video frame having a continuous time sequence and located before the first video frames in the video sequence; and according to obtained second key point data of target objects in the second video frames and the video optical flow data, obtaining first key point data of target objects in the first videoframes. By adopting the method and the apparatus, the time sequence information of the continuous video frames can be effectively used for accurately locating key points in the continuous video frames.
Owner:SENSETIME GRP LTD
Semiconductor inspection apparatus and manufacturing method of semiconductor device
InactiveUS7227370B2Ensure positioning accuracyStable contact resistanceElectrical measurement instrument detailsIndividual semiconductor device testingSemiconductor chipAtmospheric pressure
Owner:RENESAS ELECTRONICS CORP
Vehicle rear door and method of assembling same
InactiveUS20070145773A1Ensure positioning accuracyGuaranteed accuracyVehicle seatsWindowsEngineeringBack door
A rear door that is provided in an openable and closable manner at a vehicle body rear portion, the rear door having: a frame portion that forms along an external edge of the rear door, a door windshield panel that is provided in the frame portion, and a lateral beam that spans between both lower end corner portions of the windshield panel, wherein at coupling portions of the frame portion and the lateral beam, the frame portion and the lateral beam each have a closed sectional structure, and the closed sections of the frame portion and the lateral beam are continuous.
Owner:HONDA MOTOR CO LTD
Carrier phase ambiguity fixing method and device, and satellite navigation receiver
ActiveCN107064980AAccurate and fast solutionEliminate the effects of residualsSatellite radio beaconingDouble differenceDynamic models
The invention discloses a carrier phase ambiguity fixing method and device, and a satellite navigation receiver. The method comprises the following steps of: establishing an inter-receiver inter-satellite double-difference observation equation, wherein the unknown quantities of the inter-receiver inter-satellite double-difference observation equation include a single-frequency ambiguity and at least one wide-lane ambiguity; establishing a Kalman filtering observation model and a Kalman filtering dynamic model according to the inter-receiver inter-satellite double-difference observation equation; obtaining and solving multi-frequency-point real-time observation data according to a kalman filtering algorithm to obtain the floating point solutions of the wide-lane ambiguity and single-frequency ambiguity; subjecting the floating point solutions of wide-lane ambiguity and the single-frequency ambiguity to ambiguity of whole cycles fixing. The method and device can eliminate the influence of an ionosphere residual error, accurately and quickly solve the ambiguity, and thus guarantee positioning accuracy and shorten observation time.
Owner:UNICORE COMM INC
Method for applying mobile base station to enhance positioning effect in network RTK
InactiveCN105717530AShorten the distance between base stationsImprove positioning accuracy and reliabilitySatellite radio beaconingReal-time computingData processing
The invention discloses a method for using a mobile reference station in network RTK to enhance the positioning effect. When faults such as abnormal ionospheric activities or faults in the reference station in the domain occur within the service range of the network RTK, temporarily set up a mobile reference station in the fault area. The mobile reference station without precise coordinates uses the GNSS observation data obtained by the mobile reference station to obtain and refine the atmospheric correction information of the fault area, and then correct the differential correction information broadcast by the data processing center to mobile users, thereby ensuring network RTK positioning Service accuracy and reliability, improve system availability.
Owner:WUHAN UNIV
Azimuthal orientation-based positioning and monitoring device and indoor positioning system
ActiveCN104837200AReduce power consumptionExtend battery lifeWireless communicationElectromagnetic shieldingMobile device
The invention provides an azimuthal orientation-based positioning and monitoring device and an indoor positioning system. The positioning and monitoring device implement sending of a positioning and monitoring signal by virtue of a Bluetooth beacon module, is low in power consumption and long in cruise duration, can be matched with mainstream personal mobile devices in the market at present, by virtue of functions of shielding isolation and reflecting surface orientation of an electromagnetic shielding case, and in combination of signal intensity detection and distance measurement of Bluetooth wireless communication, positioning accuracy is well guaranteed, and the problem in the prior art that indoor positioning technology is difficult to satisfy an indoor positioning application requirement, and thus promotion and development of the indoor positioning technology are restricted is solved. At the same time, by use of the azimuthal orientation-based positioning and monitoring device provided by the invention, by virtue of a positioning processor having a data processing function, an azimuthal orientation-based indoor positioning system can be formed through combination and construction, construction forms are various, and thus requirements of various different indoor positioning application environments can be satisfied.
Owner:CHONGQING JINOU SCI & TECH DEV
Vehicle logo recognition method and system based on selective search algorithm
ActiveCN106529424AShort timeThe detection process is fastImage enhancementImage analysisImaging processingComputer science
The invention discloses a vehicle logo recognition method and system based on a selective search algorithm. The vehicle logo recognition method based on a selective search algorithm includes the steps: performing positioning of a license plate on an original vehicle image, and acquiring the position of the license plate; according to the position of the license plate, the spatial position relationship between the license plate and an vehicle logo, and the vehicle window edge information, performing coarse positioning on the vehicle logo in the original vehicle image, and obtaining an vehicle logo coarse positioning image; based on a central axis of the vehicle, selecting a vehicle logo candidate area in the vehicle logo in the original vehicle image; using a selective search algorithm to perform target positioning on the vehicle logo candidate area, and obtaining a positioning target set; utilizing a linear constraint coding algorithm to train a vehicle logo determination classifier to perform determination on the vehicle logo for the positioning target set to obtain the position of the vehicle logo; and utilizing the linear constraint coding algorithm to train a multi-type vehicle logo recognition classifier to perform concrete type recognition on the vehicle logo, and obtaining the vehicle logo recognition result. The vehicle logo recognition method and system based on a selective search algorithm have the advantages of extensive applicability, high robustness and high detection speed, and can be widely applied to the image processing field.
Owner:SUN YAT SEN UNIV +1
Ink jet recording head and method of producing a plate member for an ink jet recording head
InactiveUS6666547B1Simple processDeformation of a plate member during a production process can be suppressedPrintingEngineeringMechanical engineering
A plate member constituting a channel unit of an ink jet recording head has a metal plate which is produced by rolling an etchable material, and a polymer film which is laminated onto one face of the metal plate. The long side is perpendicular to the rolling direction of the metal plate. Warpage which easily occurs in the longitudinal direction is suppressed by the rigidity which is large in a direction perpendicular to the rolling direction.
Owner:SEIKO EPSON CORP
Beidou/GPS dual-mode navigation positioning device and method
InactiveCN106940447AIncrease the speed of positioningHigh positioning accuracySatellite radio beaconingSatellite dataDual mode
The invention relates to a Beidou / GPS dual-mode navigation positioning device and method, and the method comprises the steps: receiving a Beidou / GPS satellite signal, and reading satellite data; analyzing and calculating the satellite data, obtaining a first Beidou / GPS difference correction number, and storing the first Beidou / GPS difference correction number at a reference station; receiving a Beidou / GPS satellite signal and reading the satellite data; carrying out the analyzing and calculation of the satellite data, and obtaining a second Beidou / GPS difference correction number; carrying out the matching and correction of the first and second Beidou / GPS difference correction numbers, obtaining a corrected Beidou / GPS difference correction number, carrying out the position analysis, and carrying out the dual-mode positioning; and enabling an airborne moving station to carry out the continuous positioning. Compared with the prior art, the method can improve the positioning speed and precision. The method also can achieve the continuous positioning under the condition of no satellite signal, and improves the positioning precision.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Mcpherson suspension connecting structure
InactiveCN101722807AStrong platform adaptabilityEasy to adjustResilient suspensionsKnuckleMacPherson strut
The invention relates to a Mcpherson suspension connecting structure which comprises a damper, an upper transverse arm, a steering knuckle, a lower control arm lever and a damper mounting bracket, wherein the lower control arm lever further comprises a front control arm lever and a rear control arm lever, the lower end of the steering knuckle is in mounting connection with the front control arm lever and the rear control arm lever by a ball pin connecting way, and a connecting ball pin can slide at the connected parts of the steering knuckle as well as the front control arm lever and the front control arm lever. Based on the traditional Mcpherson suspension structure form, the Mcpherson suspension connecting structure realizes the kingpin inclination angle to be adjustable by changing the connection mode between the steering knuckle and the lower control arm lever, ensures that a suspension platform has stronger adaptability, is convenient for the chassis adjustment at the later stage, has the positioning precision under the control of assembly, is more guaranteed than the current unadjustable Mcpherson suspension, and can balance the steering force and the steering according to actual situations.
Owner:CHERY AUTOMOBILE CO LTD
Common rail
ActiveUS20060054139A1Bonding accuracyImprove fitting accuracyPipeline expansion-compensationFluid pressure sealed jointsCommon railEngineering
A ring-shaped connecting portion is formed on a seat surface side of a pipe connector. The connecting portion is tapered so that thickness thereof gradually reduces toward a tip end thereof. A protrusion is formed on the tip end of the connecting portion. A ring-shaped groove is formed on a flat outer peripheral surface of a common rail. By fitting the protrusion into the groove, the connector can be positioned to a predetermined position of the common rail. In this structure, current can be concentrated to the protrusion and current density can be increased. As a result, sufficient bonding strength can be attained.
Owner:DENSO CORP
Method for real-time detection of falling from bed behaviors based on depth image information
ActiveCN105868707APrivacy protectionSimple calculationBiometric pattern recognitionSupport vector machineHuman body
The invention discloses a method for real-time detection of falling from bed behaviors based on depth image information. The method includes the following steps: (1) a depth sensor acquiring a depth image of the indoor scene; (2) updating a tracking region of the depth image; (3) through a continuously changing offset dimension, extracting eight neighborhood differential characteristics of each pixel in the tracking region; (4) acquiring a head region; (5) positioning the center of the head region; (6) acquiring an above the waist region; (7) optimizing head positioning; (8) determining human body;(9) extracting height characteristics; (10) detecting falling from bed: adopting a well-trained falling from bed classifier to conduct classification detection on the height characteristics to acquire a falling from bed detection result. According to the invention, the method uses a random forest classifier to acquire the head region, and optimizes head positioning, which guarantee positioning accuracy, and also uses a support vector machine to detect falling from bed, which guarantees higher accuracy and robustness.
Owner:HUAZHONG UNIV OF SCI & TECH
Pushing sheath tube for intracranial self-expanding bracket conveyer
InactiveCN101234047AEnsure positioning accuracySatisfy complianceStentsSurgeryGuide tubeBlood vessel
The invention relates to a push-delivery sheathing canal used in an intracranial self-expandable stent conveyer, which pertains to a medical apparatus technical field and is characterized in that: stainless steel tube with the length equal to two thirds height of a grown-up, the external diameter less than the inside diameter of human blood vessel and an end providing with a photographic loop is adopted; the end of the stainless steel tube props a contractive net-type sent positioned in a conduit of an outer sheathing canal; the push-delivery sheathing canal is formed; the thickness of tube wall of the formed push-delivery sheathing canal becomes thinner successively from proximal end to the distal end. Or the stainless steel tube transmural spiral scroll is cut out and the thread pitch of the shear mark becomes narrower successively. Or the stainless steel tube is connected with the medium part and the distal part (of the push-delivery sheathing canal) which are composed of a spring formed by elastic metal material tightly entwined without any gap so as to form various series of structures which can meet different requirements; the push-delivery sheathing canal of the invention has enough pliability and ensures the positioning accuracy in stent release; since the two problems are solved, the push-delivery sheathing canal of the invention can be adopted for practical application.
Owner:ACHIEVA MEDICAL SHANGHAI
Control system used for autonomous mobile robot platform and control method and device thereof
ActiveCN106383517ARealize omni-directional movementCorrection errorPosition/course control in two dimensionsSimulationRoute planning
The embodiment of the invention discloses a control system used for an autonomous mobile robot platform. The control system comprises a robot platform and a server. The server comprises a human-computer interaction module, a data processing module and a route planning module. The embodiment of the invention also discloses a control method and device used for the autonomous mobile robot platform. With application of the control system used for the autonomous mobile robot platform and the control method and device thereof, omnidirectional movement of the robot platform can be realized by using a structure of multiple synchronous wheels so as to have flexible and high-precision plane movement capacity; and a speedometer is corrected by laser radar and an inertial navigation system by using an extended Kalman filtering algorithm, two sets of corrected positions are weighted and fused to act as spatial locating of the robot platform, and error caused by long time of operation of the robot platform is corrected by the contour characteristics of the environment so that the locating precision and the movement precision of the robot platform in long time of movement can be guaranteed, and multiple robot platforms can simultaneously operate according to the requirements to cooperatively complete the task.
Owner:SHANTOU UNIV
Smart city management platform for realizing accurate positioning of a user
ActiveCN109769201ASolve the problem of data placement difficultiesAccurate removalCharacter and pattern recognitionLocation information based serviceOriginal dataRoad user
The invention discloses a smart city management platform for realizing accurate positioning of a user. The smart city management platform includes eliminating abnormal data; identifying road users asfast-speed users, users waiting for traffic lights, and users with similar tracks on roads; identifying an indoor user; determining a range of grids required to be divided, and dividing the grids according to a set size; dividing sub-grids of all indoor attributes and sub-grids of road attributes; matching the data points with the attributes with the grids, and enabling the data points to fall into the corresponding grids; classifying users with user groups and similar signal characteristics into one class according to the signal characteristics; extracting features in each area and corresponding feature values; the fingerprint database is automatically updated in real time; and carrying out matching calculation on the characteristics and the corresponding characteristic values of the MR original data points and the characteristics and the characteristic values of the uniquely identified area in the fingerprint database, and returning corresponding longitude and latitude information inthe fingerprint database. Accurate positioning can be realized, and a basis is provided for subsequent decision making.
Owner:USTC SINOVATE SOFTWARE
Multipoint positioning auxiliary device
ActiveCN104029192APrecise positioningSimple structureOther workshop equipmentEngineeringPositioning system
Owner:STATE GRID CORP OF CHINA +2
Method and system for tracking underwater robot in real time, and unmanned relay equipment
InactiveCN110347168AAutomatic trackingReal-time trackingAltitude or depth controlLongitudeMarine equipment
The invention provides a method and system for tracking an underwater robot in real time, and unmanned relay equipment, and relates to the technical field of marine equipment. The unmanned relay equipment comprises the following parts of an underwater acoustic communication device for communicating with the underwater robot; an underwater robot positioning device for positioning the underwater robot equipped with an acoustic beacon; a satellite communication positioning device for satellite communication with a mother ship or a shore-based accusation tower, and for calculating real-time latitude and longitude; an inertial navigation device for providing a three-degree-of-freedom attitude angle and three-degree-of-freedom axial acceleration information; an autonomous control unit for receiving azimuth and distance data of the underwater robot calculated by the underwater robot positioning device, receiving the motion state data provided by the satellite communication positioning deviceand the inertial navigation device, calculating a navigation trajectory according to each received data and performing thrust distribution; and a power and propulsion device for receiving thrust distribution information and propelling the unmanned relay equipment to sail according to the navigation trajectory.
Owner:HARBIN ENG UNIV
Method for obtaining microearthquake wave velocity based on space geometry relationship
ActiveCN104502964AImprove solution efficiencyImprove stabilitySubsonic/sonic/ultrasonic wave measurementPosition fixationWave velocityBase station
The invention relates to a method for obtaining a microearthquake wave velocity based on a space geometry relationship. The method comprises the following steps: constructing an inequation of microearthquake equivalent wave velocity V according to the space geometry relationship of an earthquake focus point and a base station, constructing a regularly changing time difference fitness function shaped like a quadratic function with an upward opening, proposing a monotonous unidirectional searching algorithm, and resolving an optimum wave velocity. The method perfectly solves the problem that a velocity model in microearthquake positioning is inaccurate or non-unique, and does not need any prior engineering experience; the microearthquake wave velocity can be quickly and precisely solved according to the observation data of sensors for microearthquake arrival time, so that the positional accuracy of a microearthquake positioning algorithm in a later period is guaranteed, the rate of convergence and the stability of the algorithm are improved, and the method has an extremely high practical engineering application value.
Owner:LIUZHOU YUANCHUANG EFI TECH
Full closed-loop control method for multi-shaft linked dynamic correction of interpolation positions
ActiveCN103809520AAdaptableEnsure positioning accuracyProgramme controlComputer controlProgram segmentProportion integration differentiation
The invention relates to a full closed-loop control method for multi-shaft linked dynamic correction of interpolation positions. The full closed-loop control method for multi-shaft linked dynamic correction of the interpolation positions comprises adjusting command positions of shafts on a first command position coordinate according to collected deviation between actual positions of the shafts and a motor; performing projection of adjusted command position vectors of the shafts on a machined track, obtaining a projection length and confirming corrected command positions; stopping adjusting when a full closed-loop condition is satisfied; performing speed connection processing on a movement segment and a next movement segment when a program segment is in parallel connection and provided with follow-up movement segments; not adjusting the interpolation positions until interpolation of the current movement segment is not achieved if the full closed-loop control condition is not satisfied and enabling the actual positions of the shafts to be moved to the command positions through a PID (Proportion Integration Differentiation) control algorithm within the positioning duration which is provided through a system. The full closed-loop control method for multi-shaft linked dynamic correction of the interpolation positions has the advantages of satisfying the multi-shaft linked profile accuracy, the positioning accuracy and the repositioning accuracy, meanwhile guaranteeing stabile operation of a servo motor, guaranteeing workpiece machining accuracy and prolonging the service life of machine tools.
Owner:中国科学院沈阳计算技术研究所有限公司
Positioning circuit, positioning system and positioning method based on Bluetooth AOA communication
PendingCN110740505AAvoid Positioning ErrorsEnsure positioning accuracyPosition fixationDirection findersComputer hardwareControl signal
The invention discloses a positioning circuit based on Bluetooth AOA communication, a positioning system based on Bluetooth AOA communication and a positioning method based on Bluetooth AOA communication. The positioning circuit comprises a radio frequency communication module, a switch switching module, a Bluetooth communication module, a calibration compensation module and a positioning controlmodule. The switch switching module outputs a driving signal according to the control signal and the radio frequency signal. The plurality of antenna units are respectively located at preset positionsand are driven by the driving signal to sequentially receive the first Bluetooth communication signal. The calibration compensation module calibrates the communication state of each antenna unit to obtain a corresponding phase compensation value. The positioning control module obtains an angle value and a distance value of the to-be-tested equipment according to the phase difference of the multiple paths of first Bluetooth communication signals after phase compensation so as to complete a positioning function on the to-be-tested equipment. The positioning circuit directly obtains the positionof the to-be-measured equipment according to the phase difference, thereby saving the intermediate variable, simplifying the positioning measurement steps, and improving the positioning precision andpositioning efficiency.
Owner:深圳市微能信息科技有限公司
Manipulator for gripping blood type cards automatically
InactiveCN102806558AReduce volumeEasy to useProgramme-controlled manipulatorGripping headsElectric machineryEngineering
The invention discloses a manipulator for gripping blood type cards automatically. The manipulator comprises a small motor. The small motor is fixed on one motor connecting plate, and a gear is fixed on an output shaft of the small motor through a cylindrical pin and meshes with two racks. The two racks are arranged in symmetry and move in opposition. Two ends of the motor connecting plate are respectively fixedly connected with connecting plates, the connecting plates are provided with rack via holes respectively, and the two racks penetrate through the rack via holes respectively. Reverse ends of the two racks are respectively fixedly connected with one clamping bar, and clamping blocks used for gripping the blood type cards are fixedly arranged at the bottom ends of the clamping bars. The manipulator acts under action of the small motor, is small in size, convenient to use and is safe and reliable.
Owner:SUZHOU HYBIOME BIOMEDICAL ENG CO LTD
Unmanned aerial vehicle autonomous landing method based on visual identification
InactiveCN112486207ASimplify the calibration processEnsure positioning accuracyPosition/course control in three dimensionsUncrewed vehicleThresholding
The invention relates to the field of unmanned aerial vehicles, and discloses an unmanned aerial vehicle autonomous landing method based on visual identification. The method comprises the steps of binocular camera correction and calibration, landing landmark selection, close-range landing landmark positioning and long-distance landing landmark positioning. According to the unmanned aerial vehicleautonomous landing method based on visual identification, the calibration process is simplified, the calibration precision is improved, and the positioning precision is guaranteed; and threshold segmentation is performed on an image by adopting a maximum between-cluster variance method, the threshold can be adaptively determined, calculation is facilitated, and two algorithms of short-distance landing landmark positioning and long-distance landing landmark positioning are respectively designed according to the distance between the unmanned aerial vehicle and the landing landmark, so the positioning precision of the unmanned aerial vehicle during autonomous landing is higher, and the risk of air crash caused by inaccurate positioning is reduced.
Owner:山东力聚机器人科技股份有限公司
Handling device
ActiveUS20090060695A1Low costAvoid contactVehicle with removable loadingRefuse transferringEngineeringTractor
The invention relates to a handling device combining at least one trailer (100) that can be hitched to a tractor vehicle and / or to other trailers to form a carriage train and at least one bed (300) for bearing the load (C), notable in that the trailer (100) comprises running means (110) supporting a chassis (120) equipped with a module (200) for loading and unloading the bed (300) that bears the load (C) combining means for the motorized movement of the bed and means for positioning said bed (300) so that the bed (300) is no longer in contact with the ground and is held in position on the trailer (100).
Owner:INNOVEP
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