12results about How to "Fix inaccurate positioning" patented technology

The invention belongs to the technical field of positioning and navigation, and particularly relates to a line inspection method and system for unmanned aerial vehicle airborne power grid X-ray detection equipment. According to the method, a positioning unmanned aerial vehicle is used for determining a hovering point of a transportation unmanned aerial vehicle on a power transmission line, after the hovering point is sent to a positioning navigation unit, the positioning navigation unit carries out coordinate system unification and flight path planning, and the transportation unmanned aerial vehicle receives a flight instruction sent by the positioning navigation unit; carrying the power grid X-ray detection equipment to fly to a hovering point according to the path planning of the positioning navigation unit; and releasing the power grid X-ray detection equipment, analyzing the acquired X-ray image by the power grid X-ray detection equipment, and transporting the unmanned aerial vehicle recovery equipment after the acquisition task is completed. According to the invention, the difficulty in releasing and recovering the power grid X-ray detection equipment can be reduced, and the detection efficiency is improved.

The invention relates to the field of mechanical automatic assembly, in particular to a fin feeding machine. The fin feeding machine comprises a feeding mechanism, a conveying mechanism, a fin discharging mechanism, an assembling mechanism and a carrying mechanism, the feeding mechanism is used for conveying fin materials, the conveying mechanism receives the fin materials and continues to convey the fin materials, and the fin discharging mechanism clamps the fin materials and presses the fin materials down to fall into the assembling mechanism; the assembling mechanism assembles fin materials and flat tube materials at intervals, and the carrying mechanism enables the equipment to automatically carry the flat tube materials or assembled finished products to a target position. According to the fin assembling device, the fin feeding efficiency and the quality of assembled products can be improved, and meanwhile the assembling requirements of fins and flat pipes of different specifications can be met.

The utility model relates to the technical field of electrical equipment, in particular to a power socket and a double-sided socket module thereof. The double-sided socket module comprises two groups of socket units which are arranged back to back and are fixedly connected, and an L-pole conductive strip and an N-pole conductive strip which are arranged between the two groups of socket units, and the two groups of socket units are each consistently equipped with at least one power taking potential; and when the two groups of socket units are fixedly connected in a back-to-back manner, the contacts in the socket units are conducted with the L-pole conductive strips and the N-pole conductive strips. According to the scheme, on one hand, two groups of socket units opposite to each other can be fixedly connected without a socket shell, and on the other hand, the mounting structure can be simplified.

This utility model relates to the field of tunnel construction equipment technology, specifically to a rapid positioning and welding device for tunnel arch frame connecting flange plates. It includes clamping rods and positioning clamping plates. The two clamping rods are hinged together at the middle, with a clamping side and an operating side on either side of the hinge point. The positioning clamping plates are fixedly connected to the clamping sides of the clamping rods. The inner sides of the two positioning clamping plates are provided with positioning cavities matching the shape of the arch frame. An elastic element is provided between the two clamping rods on the operating side to maintain a clamping tendency. Positioning structures corresponding to the flange holes of the arch frame connecting flange plates are provided on the sides of the positioning clamping plates. This rapid positioning and welding device for tunnel arch frame connecting flange plates, through the cooperation of the positioning clamping plates and positioning structures, can quickly and accurately achieve the positioning and welding of the arch frame connecting flange plates, avoiding many problems caused by inaccurate positioning and ensuring the rapid and smooth assembly of the tunnel arch frame.

This invention discloses a control method and a smart terminal, relating to the field of smart terminal technology. The control steps are as follows: S1, acquiring the user's eye gaze position based on a camera and converting the gaze direction into specific position coordinates on the screen; S2, detecting the user's touch position on the screen based on a touchscreen sensor and acquiring the coordinates of the touch position; S3, comparing the acquired gaze position coordinates with the touch position coordinates, determining whether the gaze position is within the range defined by the touch position, establishing a judgment range threshold, and performing the comparison; S4, if the gaze position and the touch position are consistent, responding to the user's touch and executing operation control. In terms of interaction accuracy, this invention integrates the gaze position coordinates acquired by the camera and the touch position coordinates of the touchscreen, solving the problem of inaccurate target object positioning caused by large touchscreen partitions, improving the accuracy of touchscreen touch response, and preventing misoperation.

This invention discloses a rapid prototyping system for porcelain insulators, relating to the field of porcelain insulator technology. It includes a workbench with a lifting assembly fixedly connected above it via a mounting bracket. An upper mold is fixed to the movable part at the bottom of the lifting assembly. A lower mold is fixed directly below the upper mold on the workbench. Vertical guide rods are provided at the four corners of the lower mold, with guide cones at the top (narrower at the top, wider at the bottom) and the same size as the guide rods at the bottom. Vertical through-type limiting tubes are provided at the four corners of the upper mold, with the inner wall of the limiting tubes slidingly fitting against the outer wall of the guide rods. Both the upper and lower molds are equipped with temperature control mechanisms, including heating grids and temperature sensors. The temperature sensors detect the temperature of the heating grids, and the power of the heating grids is controlled by a first control unit according to a preset temperature. The two first control units communicate in real time via a wireless communication unit to ensure that the heating grid temperatures are the same. The upper and lower molds and their heating grids are the same size. This invention allows for rapid preliminary shaping, accurate positioning, and uniform heating.

The application provides a tracking method of personnel trajectory, a tracking device thereof and a tracking system thereof. The method comprises the following steps: firstly, obtaining multiple image information and multiple parameter information of multiple preliminary shooting devices in a predetermined space; then, determining predetermined coordinate information of personnel in each image information according to the parameter information and the image information, wherein the predetermined coordinate information is three-dimensional coordinate information of the personnel in the image information; subsequently, obtaining identity information corresponding to the personnel in each image information; then, determining a target shooting device group from the multiple preliminary shooting devices according to the predetermined coordinate information and the identity information, wherein the target shooting device group is a shooting device without failure in the multiple preliminary shooting devices; finally, determining target coordinate information of the personnel in the target shooting device group as the predetermined coordinate information. The accuracy of tracking the personnel trajectory in the predetermined space is high, and the problem of inaccurate positioning of indoor personnel in the prior art is solved.

The utility model discloses and provides a sampler for soil monitoring, which comprises a grip, the bottom end of the grip is connected with a first connecting rod, one end of the first connecting rod is movably connected with a second connecting rod, the bottom end of the second connecting rod is connected with a sampling tube, the outer surface of the second connecting rod is movably provided with a connecting plate, and the outer surface of the connecting plate is movably provided with a connecting rod. A plurality of groups of positioning rods are fixedly mounted on the outer surface of the external connecting plate, two groups of sliding grooves are formed in the outer surface of the sampling pipe, sliding blocks are movably mounted in the sliding grooves, one end of each sliding block is connected with a scraping plate, and one end of each sliding block is connected with a handle. The problem that a traditional sampling method is inaccurate in positioning is solved. The insertion of the positioning rod can ensure that the sampler is stably fixed at a preset sampling position, so that the accuracy of a sampling point is greatly improved, and more reliable data support is provided for subsequent soil monitoring and analysis.

The invention discloses a follow-up type precise distance measurement and positioning device for a four-way shuttle vehicle, comprising a follow-up distance measuring wheel swing arm (3) movably arranged on a body (1) of the four-way shuttle vehicle, one end of the follow-up distance measuring wheel swing arm (3) being movably fixed by a swing arm rotating shaft (4) fixedly arranged on the body (1) of the four-way shuttle vehicle, and the follow-up distance measuring wheel swing arm (3) being freely rotatable around the swing arm rotating shaft (4), the other end of the follow-up distance measuring wheel swing arm (3) being fixedly arranged with a rotating shaft sleeve (18), the follow-up distance measuring wheel (5) being fixedly arranged on one end of the follow-up distance measuring wheel rotating shaft (6), and being movably arranged in the rotating shaft sleeve (18) by the follow-up distance measuring wheel rotating shaft (6), and the problem of inaccurate distance measurement and inaccurate positioning caused by deformation, wear, slippage and the like of the travel wheel during long-distance operation of the four-way shuttle vehicle is solved by the separately arranged follow-up distance measuring wheel.

The invention relates to an echo feature point positioning method and device of an ultrasonic water meter and a storage medium. The method comprises the steps that a reference flight time value is corrected; sorting the data sequences of the plurality of feature flight times; performing multivariate probability coding on the sorted data sequence, and calculating an average value of candidate combination probability amplitudes; performing pulse time sequence coding and competitive characteristic significance detection on the sorted data sequence; variational global optimization is carried out on the sorted data sequence, a first candidate feature point combination is screened out from the time sequence position combination, and the reconstruction matching degree of the first candidate feature point combination is calculated; performing physical constraint check on the first candidate feature point combination; and according to the statistical evidence, the pulse confidence, the reconstruction matching degree and the physical constraint score, determining an echo feature point positioning result of the ultrasonic water meter from the first candidate feature point combination. According to the invention, accurate positioning of the echo signal feature points is realized, and the problem of inaccurate positioning of the echo signal feature points in the prior art is solved.

This application provides a method, apparatus, electronic device, and storage medium for location reliability processing. The method includes: first, acquiring first point cloud data; then, filtering the first point cloud data to reduce the number of points while maintaining shape features, to obtain second point cloud data; smoothing a first grid map to eliminate noise, to obtain a second grid map; then, calculating the matching degree of each current point based on the second point cloud data and the second grid map; obtaining the actual matching degree of each current point by multiplying by a preset coefficient, and calculating the root mean square error to obtain a second laser matching degree; finally, using the second laser matching degree as the robot's location reliability. This application can obtain more accurate location reliability.

The invention provides a bow blowing positioning control method for a trailing suction hopper dredger. According to the method, a mechanism environment during bow jet operation of the trailing suction dredger is constructed based on a simplified ship three-degree-of-freedom dynamics and kinematics model, and a reinforcement learning network is constructed by adopting a maximum entropy reinforcement learning algorithm, so that the environment global exploration capability of the model is greatly improved, and the method has relatively high robustness and is suitable for popularization and application. A priority experience playback mechanism, a mixed sampling factor and strategy delay update are introduced into the model, on the basis of keeping priority experience playback efficient focusing key samples, the problem of sample diversity reduction caused by excessive bias is relieved by using the mixed sampling factor, meanwhile, the interference of value estimation errors on strategy update is reduced through DPU, and the accuracy of strategy updating is improved. The dredger can continuously adjust the thrust according to the bow jet reaction force, the position and the heading during bow jet operation are kept, and the problem that a traditional drag suction dredger is inaccurate in bow jet operation positioning is solved.