92results about How to "Avoid positioning deviation" patented technology

The invention relates to the technical field of wireless communication networks, in particular to an indoor and outdoor integrated high-precision positioning and navigation system as well as a positioning method thereof. The system comprises a map data construction unit, an indoor ultra-wideband positioning and navigation unit, an outdoor BD/GPS positioning and navigation unit, an indoor and outdoor positioning data fusion unit, a central server unit and a terminal display unit, wherein the indoor ultra-wideband positioning and navigation unit is used for performing indoor space positioning in a ranging mode, the outdoor BD/GPS positioning and navigation unit is used for performing outdoor space positioning through a Beidou satellite navigation/GPS satellite navigation system, the indoor and outdoor positioning data fusion unit is used for judging whether a positioning label is indoor or outdoor and can intelligently switch positioning modes according to the judgment result and fuse indoor and outdoor positioning manners. Problems that positioning and navigation of personnel and objects in a large-range area are difficult to realize, not high in precision and the like at present are solved, and large signal interference and positioning deviation caused by mutual interference among signals can be avoided in the ranging mode.

The invention discloses a UWB-based mine unmanned locomotive high accuracy positioning system and method; the system comprises a plurality of UWB label node Tags, a UWB anchor node Anchor, underground communication AP equipment and a beacon device, wherein said four parts are connected through wireless or wired signals; the method does not directly locate the locomotive position, and comprises the following steps: 1, range finding, allowing a range finding node to utilize the features that narrow pulse signal transmission has very strong anti-interference ability, thus preventing positioning errors caused by underground dust accumulation and magnetic field disorder; 2, calculating coordinates in a route, using the least square algorithm to solve node coordinates according to inter-point accurate distances measured in the first step; 3, allowing the monitoring center to finally determine the locomotive position in the mine according to the relative position between the beacon device position in the route and the locomotive coordinates, wherein the positioning accuracy reaches 0.1m.

The invention discloses a geometric constraint-based high-resolution optical satellite staring image registration method. The method comprises the steps of S100, building a free network adjustment directional model of images by utilizing a rational function model of additional image space error compensation; S200, based on the free network adjustment directional model, performing dense matching ona stereoscopic image pair with an optimal rendezvous condition in the images to obtain coordinates of dense homonymy points; S300, generating dense point cloud data, performing gross error point deletion on the dense point cloud data, and generating digital surface model data; and S400, based on the free network adjustment directional model and DSM data, performing geometric correction on the images in sequence. By utilizing geometric locating consistency, high-precision registration of high-resolution optical satellite multi-angle staring sequence images is realized; the multi-angle staringsequence image registration problem caused by satellite platform control inaccuracy and attitude measurement inaccuracy is solved; and a high-precision data basis can be provided for subsequent application.

The invention relates to a method and device capable of controlling playing progress on touch control equipment and the touch control equipment. The method capable of controlling the playing progress on the touch control equipment comprises the steps that a valid touch area used for controlling the playing progress is determined according to the left/right hand operation mode of the touch control equipment; a touch event is sensed, wherein a starting touch point of the touch event is located in the valid touch area; the playing progress is synchronized based on an end touch point of the touch event. Correspondingly, the device capable of controlling the playing progress on the touch control equipment comprises a determining unit, a sensing unit and a synchronization unit. The method and device capable of controlling the playing progress on the touch control equipment and the touch control equipment have the advantage that the data interaction performance of the touch control equipment can be improved.

The invention discloses a UAV GPS spoofing detection method, and belongs to the technical field of UAV positioning. When a UAV U needs to determine whether spoofing attack occurs in a UAV formation flight state, the UAF sends a positioning request to a ground state and other group members; after receiving the request, the other UAVs upload position information data packages with time stamps to theground station, and the present position of the UAV V can be resolved if three UAVs or more in the group make response; and when the number of responded UAVs is lower than 3, the target UAV is positioned and tracked in the area in real time by a related angle and angle change rate combined method. The UAV position information is calculated actively in real time and compared with positioning information, not proved, received from a GPS receiver, so that attack of the group member the moment that the UAV system suffers GPS spoofing attack, and safe flight of the UAV is effectively ensured.

The invention provides an iron shoe remote monitoring and management system and a method thereof, wherein the iron shoe remote monitoring and management system comprises an intelligent iron shoe, a mobile terminal and a central control management device, wherein the mobile terminal is connected with the intelligent iron shoe, and the central control management device is connected with the mobile terminal; the central control management device comprises an information collection assembly and a monitoring platform assembly, wherein the information collection assembly is connected with the mobileterminal in a wireless manner and the monitoring platform assembly is connected with the information collection assembly; and after the intelligent iron shoe is mounted and put on a rail, the information collection assembly obtains positioning information of the mobile terminal and transmits the positioning information to the monitoring platform assembly. The iron shoe remote monitoring and management system has the advantages that the positioning result can be more accurate through the positioning of the intelligent terminal, the positioning accuracy can be improved, the informatization management of the intelligent iron shoe is realized, the safe and stable operation of anti-slip related equipment is ensured and the safeties of a stopping rolling stock, other railway equipment and personnel are effectively guaranteed.

The invention discloses a method for co-bonding an embedded copper strip and a composite prepreg. The embedded copper strip and a glass fiber-reinforced resin matrix composite material are co-bonded through a vacuum bag-autoclave molding technology. In the prepreg paving process, the copper strip is bonded to the laid and cured prepreg through a binder and the prepreg is paved and cured in two processes so that the prepreg is formed. The method bonds the pre-cured prepreg and the copper strip and solves the problem that the cured prepreg has no rigidity so that the copper strip is difficult tofix and the prepreg easily deforms in the copper strip bonding process.

The invention discloses an indoor positioning method and system based on a Bluetooth beacon group. The method comprises the steps of acquiring beacon data output, according to a positioning point, byeach Bluetooth beacon in each indoor bean group, wherein the indoor space is divided into multiple spatial areas, and Bluetooth beacons in the same spatial area are in the same beacon group; accordingto the beacon data output by each Bluetooth beacon, determining a beacon group of a spatial area in which the positioning point is; and according to the beacon data output by the Bluetooth beacon ofthe determined beacon group, determining coordinates of the positioning point. Through adoption of the method and system, large positioning deviation is prevented, and the user experience is improved.

The invention belongs to the technical field of corn gene mapping, in particular to a new method for mapping a corn S-type cytoplasm male sterility fertility restoring gene Rf3. According to a conventional method for mapping a qualitative character gene, a backcross or selfing population is constructed, the gene type of an individual is inferred through phenotype identification, molecular marker detection is performed, and the position of the gene is determined through two-point and three-point tests. When the Rf3 gene is mapped with the conventional method, the phenotype identification is affected by human and environmental factors easily, the workload is large and the size of the population to be mapped is limited. The mapping method aims to overcome the defects of the conventional method for mapping the Rf3 gene and does not need the phenotype identification. The new method is characterized in that due to the fact that the gene type of the utilized population to be mapped is already known, the phenotype does not need to be identified, a large population can be constructed, and enough recombined individuals can be found in one generation to fine map the Rf3 gene. The method for mapping the Rf3 gene is effective and promotes three-line sterility seed production by the utilization of the Rf3 gene in production.

An embodiment of the invention relates to the field of information technology processing, in particular to an associated address acquisition method, an associated address acquisition device, electronic equipment and a storage medium. The associated address acquisition method comprises the following steps of: receiving a message or an instruction from a client; analyzing the message or the instruction through at least one processor to obtain a target address, wherein the target address comprises longitude and latitude information and text description; determining a spatial index code of the target address through at least one processor according to the longitude and latitude information; and determining an interest surface of the target address through the at least one processor according to the text description, wherein the associated address of the target address comprises the spatial index code and the interest surface. By adopting the associated address acquisition method and the associated address acquisition device of the invention, a more accurate associated address can be obtained.

The invention discloses a leveling system of a laser leveling instrument and a debugging method thereof. The leveling system comprises a main body, a first frame with two side walls parallel to the laser beam emitted from the laser leveling instrument and a first bubble pipe arranged on the first frame. A first projecting part is arranged outside a side wall of the first frame; the main body is provided with a first groove corresponding to the first projecting part; the side wall of the first groove is provided with penetrated screw holes; each screw hole is provided with a first adjusting screw and a first cock screw; the first adjusting screw and the first cock screw are matched to fix the first projecting part in the first groove; the other side wall of the first frame is provided with a first connecting hole; the main body is provided with a first screw hole corresponding to the first connecting hole; and the first screw passes through the first connecting hole and is connected with the first screw hole. The invention effectively ensures that the sensor members can be positioned on different positions and guarantee the positioning precision, reduces the debugging time and improves the production efficiency.

The embodiment of the invention provides a position estimation and prediction method of a moving object. The method comprises the steps that model parameters of a position prediction model are updated according to a position data sequence of a moving object at the current sampling moment, and the position data sequence comprises position observation data of a plurality of continuous sampling moments before the current sampling moment; determining position prediction data at the current sampling moment according to the position data sequence and the position prediction model after the model parameters are updated; determining position estimation data at the current sampling moment according to the position prediction data and the position observation data at the current sampling moment; and determining position prediction data at the next sampling moment according to position estimation data at the current sampling moment, the position data sequence and the position prediction model after the model parameters are updated, and entering iteration operation at the next sampling moment until the position prediction data of the moving object meets iteration ending conditions.

The invention provides pipe fitting weld joint polishing equipment which is characterized by comprising polishing assemblies distributed at the inner end and the outer end of a polishing piece; the detection unit is arranged at the fixed end of the polishing assembly; the fixing unit is arranged at the side part of the detection unit; after the position of the welding seam is found by the detection unit in the rotating process of the grinding piece, the position of the grinding piece is locked through the fixing unit; the arc length between the first prediction assembly and the second prediction assembly is set to be equal to the effective length of the rack, and it is ensured that when the reverse wedge-shaped plate is inserted into the welding seam, the first grinding roller and the second grinding roller just make the upper end face and the lower end face of a grinding piece make contact; therefore, the welding seam position of the grinding piece can be automatically detected.

The invention discloses an image information detecting method. The image information detecting method comprises the following steps: selecting a matched datum from a standard sample; capturing a continuous image of a to-be-detected sample; acquiring a plurality of frame to-be-detected images from the continuous image; selecting a character datum of each to-be-detected image; and comparing the matched datum with each character datum so as to obtain a matched rate. By utilizing the image information detecting method, the positioning precision can be improved so as to reduce the detection deviation.

Disclosed is a puncture operation robot device with a breath following function. The puncture operation robot device comprises a vertical linear motion mechanism, a horizontal plane positioning mechanism, a puncture needle angle adjusting mechanism and a puncture needle tail end mechanism, wherein the vertical linear motion mechanism is in control connection with the horizontal plane positioning mechanism, and the horizontal plane positioning mechanism is in control connection with the puncture needle angle adjusting mechanism. The puncture needle angle adjusting mechanism is in control connection with the puncture needle tail end mechanism, and the puncture needle tail end mechanism comprises a breathing following assembly and a needle clamping assembly. Compared with the prior art, a puncture needle clamped by the needle clamping assembly is positioned through a multi-dimensional positioning mechanism, and the device has the advantages of being compact in structure, high in positioning precision and large in working range; the needle clamping assembly can meet the requirements of multi-needle puncture and multi-time puncture; and the breathing following mechanism can solve the traction risk caused by breathing or displacement of the patient. By the adoption of the robot, the defects of manual puncture and an existing puncture robot can be overcome, doctors are helped to conduct better operations, and the operation safety and success rate are improved.

The invention relates to the field of processing equipment of mechanical equipment, in particular to an automatic height-detecting and reaming integrated machine. The machine mainly comprises a machine frame, support columns, a baseplate, a feed conveying mechanism, a feeding mechanism, a height measuring mechanism, a moving and carrying mechanism, a reaming mechanism and a discharging mechanism, wherein the baseplate is arranged on the upper end surface of the machine frame; the support columns are arranged at the four corners of the machine frame; the feed conveying mechanism, the feeding mechanism, the height measuring mechanism, the reaming mechanism and a qualified product conveying mechanism are arranged on the base plate in sequence; and the discharging mechanism is vertically arranged between the reaming mechanism and the qualified product conveying mechanism. After the adoption of the structure, accurate feeding of material is realized through a visual positioning mechanism, integrated operation is realized through the combination of the height measuring mechanism and the reaming mechanism, the problem of positioning deviation caused by secondary clamping is avoided, processing procedures are reduced, the production efficiency is improved, and the labor cost is saved.

The invention provides a boiler burner tangent circle positioning tool and method. The boiler burner tangent circle positioning tool comprises a laser range finder, a leveling tool and a level gauge,wherein the leveling tool is located on the side surface of the laser range finder, the straight outer edge of the leveling tool is parallel to the axial direction of the laser range finder, and the inner edge of the leveling tool is connected with the laser range finder through a connecting piece; and the level gauge is fixedly arranged on the laser range finder or the leveling tool. The beneficial effects of the invention are that the laser range finder is used for measuring the linear distance and replacing a steel wire commonly used in the prior art, a problem of positioning deviation caused by the bending deformation of the steel wire under the action of gravity in the prior art can be avoided, and the purpose of accurately positioning an imaginary tangent circle is achieved.

The invention belongs to the field of sand mold casting, and relates to a sand mold casting die plate, in particular to a self-locating die plate of a sand mold. The self-locating die plate of the sand mold comprises an upper die plate body and a lower die plate body arranged on the lower portion of the upper die plate body. First trapezoidal grooves are formed in the middle of the upper die plate body. Second trapezoidal grooves are formed in the middle of the lower die plate body. The first trapezoidal grooves are the same as the second trapezoidal grooves in size and structure. Upper mold bags protruding upwards are arranged in the middles of the first trapezoidal grooves. Lower mold bags which are recessed downwards and matched with the upper mold bags are arranged in the middles of the second trapezoidal grooves. Each trapezoidal groove is an isosceles trapezoid, and the locating inclination angle of each isosceles trapezoid ranges from 5 degrees to 40 degrees. The self-locating die plate of the sand mold has the beneficial effects of being simple in structure, precise in location, high in practicability, easy to manufacture and the like, the length of the mold thickness is increased after flat parting is transformed into curved surface parting, and the phenomenon of bleeding from parting is reduced.

The invention discloses an airborne RTK central position compensation algorithm and belongs to the field of UAV measurement and control and information transmission. The algorithm comprises the stepsof a), according to the installation positions of an antenna GNSS1 and an antenna GNSS2, measuring the distance L1 between the antenna GNSS1 and the antenna GNSS2 and the distance L2 between the center of a UAV and the midpoint of the antenna GNSS1 and the antenna GNSS2; b), extracting the positional information (y, x) and the deflection angle [theta] of the antenna GNSS1 from the received telemetry data transmitted from the UAV; c), calculating the position (y1, x1) of the midpoint of the antenna GNSS1 and the antenna GNSS2 by a geometric principle according to the distance L1 between the antenna GNSS1 and the antenna GNSS2, and the position (y, x) and the deflection angle [theta] of the antenna GNSS1; d), according to the position of the midpoint of the antenna GNSS1 and the antenna GNSS2 (y1, x1), the distance L2 between the center of the UAV, the midpoint of the antenna GNSS1 and the antenna GNSS2, and the deflection angle [theta], calculating the position (y2, x2) of the center ofthe UAV by a geometric principle. The algorithm can effectively calculate the center position of the UAV and reduce the deviation caused by the installation of the antennas on the UAV.

The invention discloses a large field-of-view galvanometer coaxial vision imaging device and method. The device comprises a light source, a field lens, a galvanometer system, a diaphragm portion, a spectroscope, an image sensor and a laser assembly; the light source is used for irradiating a to-be-machined workpiece surface, and an imaging system light beam reflected by the workpiece surface sequentially passes through the field lens, the galvanometer system, the diaphragm portion and the spectroscope, enters a camera shooting lens and is received through the image sensor; and a laser light beam emitted by the laser assembly sequentially passes through the spectroscope, the diaphragm portion, the galvanometer system and the field lens and irradiates the to-be-machined workpiece surface. According to the large field-of-view galvanometer coaxial vision imaging device and method, the galvanometer coaxial vision breadth can be significantly increased, a visual positioning function of a large sample is completed by directly adopting galvanometer coaxial vision in the laser machining process, and positioning deviation caused by temperature drift of the galvanometer system in a laser machining system is overcome.

The invention relates to the technical field of brazing, in particular to a clamp for vacuum brazing. The clamp for vacuum brazing is used for connecting and positioning of a wall facing unit of a divertor and a heat sink material and comprises a bottom plate, bolts, an upper fixed block, a lower fixed block, elastic sheets and a positioning block. By means of the design of the upper fixed block,the lower fixed block, the upper elastic sheet and the lower elastic sheet, acting force exerted by nuts is converted into balanced acting force along bolt columns, and the acting force achieves accurate positioning of different modules through positioning block and the cooperation of the bottom plate and the bolt columns.

The invention provides a model training method and device, and the method comprises the steps: constructing an initial network model which comprises a backbone network, a region suggestion network, a mask network and an attention mechanism-based recognition network; wherein the backbone network performs feature extraction on the input picture to obtain a feature map; the region suggestion network is used to generate candidate target boxes; and the mask network obtains a mask prediction result based on the feature map and the candidate target frame. The identification network obtains a classification prediction result and an outer bounding box prediction result based on the feature map, the candidate target frame and the mask prediction result; acquires a plurality of training pictures and respective labels of the plurality of training pictures, wherein the label of any training picture comprises the category of the target object in the any training picture, an outer wrapping frame and a mask; and trains the initial network model by using the plurality of training pictures and the respective labels of the plurality of training pictures to obtain a target network model. The invention further provides a map drawing method and device, computer equipment and a medium.