76results about How to "Improve positioning reliability" patented technology

The application discloses a kind of based on multimodal fusion expressway long tunnel real-time fire source detection method and system, it is estimated by introducing smoke temperature airflow dynamic propagation delay under wind speed constraint, visible light, infrared, smoke concentration and environmental temperature and so on heterogeneous data are phase shift compensation and space-time unification, different modal can correspond to the same fire physical time, then respectively extract visual side flame profile, thermal gradient feature and sensing side smoke temperature mutation, time evolution characteristics, and utilize cross-modal interactive fusion to form the fusion feature expression with image representation ability and environmental perception ability, finally, combine target detection and inverse perspective positioning Output fire confidence and fire source coordinates, to solve the problem that multi-source data is difficult to effectively align, early fire source feature weak leads to inaccurate identification, false alarm under complex disturbance is higher and fire source position is difficult to determine in real time accurately, improve the real-time, accuracy and engineering applicability of tunnel fire source detection.

A locking mechanism for a diagonal tie rod in an outward-opening, top-hung hardware system is disclosed. The diagonal tie rod includes a movable tie rod slidably mounted on a base for positioning a first connecting rod. The base has a first connecting rod with a limiting groove at one end near the base. The positioning device includes a limiting block with a locking part. When the window sash needs to be opened to its maximum position, the locking part extends out of the base and engages with the limiting groove to form a limiting connection, thus locking the window sash. The movable tie rod has an unlocking part. When the window sash needs to be closed, the locking part slides within the base driven by the handle. The unlocking part abuts against the limiting block, creating a lever effect that disengages the locking part from the limiting groove, thereby releasing the locked state of the window sash.

The invention relates to an acoustic signal processing and biological recognition technology, in particular to a method for fusing sound source localization and voiceprint recognition, a chip and electronic equipment. The method comprises the following specific steps: synchronously acquiring an environment audio signal through an audio acquisition module array and processing the environment audio signal to obtain audio data; and analyzing the audio data to obtain deep fusion voiceprint features. And judging whether a registered user feature library contains the deep fusion voiceprint feature or not, if so, outputting a sounder identity, and if not, marking and endowing an identification number of the sounder identity. And positioning the sound source based on the audio data to obtain a space coordinate thereof. And establishing an identity-position association model, binding identity information output by voiceprint recognition with space coordinates obtained by sound source positioning, and generating identity-position association data. According to the method, the technology is fused and innovated, accurate linkage of identity-position is realized, high real-time performance and strong anti-interference capability are realized, and the method is adaptive to complex scenes.

The application discloses a kind of indoor positioning systems for fire safety evacuation, it is related to fire safety technical field, the indoor positioning system includes positioning terminal, wireless communication module, server and fire equipment control module, positioning terminal is worn on the body of indoor personnel, for real-time acquisition personnel's position information, and position information is sent to server by wireless communication module, server receives position information, and personnel is positioned according to stored high-precision indoor map, simultaneously, server also sends personnel's position information to fire equipment control module, to make fire equipment control module control the operation of fire equipment according to personnel position information, the indoor positioning system for fire safety evacuation of the application has very high positioning accuracy and reliability, positioning terminal uses ultra-wideband UWB positioning technology, can accurately determine personnel position in complex indoor environment.

The invention provides a bidirectional photoelectric measurement cooperative positioning method, which is used for realizing high-precision and low-delay cooperative positioning through bidirectional photoelectric distance measurement and direction finding and data link synchronization between an unmanned ship and a patrolling flight device when the navigation equipment of the patrolling flight device has short-time faults (such as electromagnetic interference, shielding and high maneuvering states). The unmanned surface vehicle and the patrolling flying devices measure the other one by using self photoelectric equipment respectively, and position estimation values of the two patrolling flying devices are independently calculated respectively based on the high-precision position of the unmanned surface vehicle; the collaborative weight coefficient is calculated according to the measurement error of the photoelectric equipment of the two parties, weighted average fusion is carried out at the patrolling device end, the optimized positioning result is directly output, and the delay error caused by back-and-forth transmission of a data chain is effectively avoided. And reliable positioning information can be obtained by the patrolling device in a complex electromagnetic environment and a maneuvering condition. The method is suitable for a cooperative scene of the unmanned surface vehicle and the patrol aircraft, and has the advantages of good real-time performance, strong anti-interference performance, low cost and the like.

This invention discloses a positioning and clamping device for thin-walled parts, including a hydraulic clamping module and a quick positioning module. The hydraulic clamping module includes a base, and an expansion sleeve is installed in the inner cavity of the base, forming a sealed hydraulic oil chamber between the expansion sleeve and the inner cavity sidewall of the base. The quick positioning module includes a positioning shaft, and a disc is coaxially arranged at the lower part of the positioning shaft. The bottom of the positioning shaft passes through the disc and mates with a central positioning hole on the bottom surface of the inner cavity of the base. The positioning shaft is assembled in the inner cavity of the base. An installation hole is opened on the side of the disc and extends into the disc. A positioning block is installed in the installation hole by a spring. The front end of the positioning block has a toothed structure, and the spring can push the front end of the positioning block to the outside of the disc. A connecting groove communicating with the installation hole is opened on the upper surface of the disc. The lower end of the handle is inserted into the connecting groove and connected to the positioning block by a pin. A through groove is opened on the positioning shaft. The handle passes through the through groove, and the middle part of the handle is installed in the through groove by a pin.

The invention discloses a single-layer Compton camera system and an imaging method, and relates to the technical field of nuclear radiation imaging. The system comprises a single-plane pixel type gamma ray detector used for collecting gamma ray interaction event data, including time information and energy information of each interaction and two-dimensional position information in a detector plane, and forming pixel counting distribution; the shielding structure is arranged on one side of the plane of the detector, is located in a local area of the detector and is used for enabling pixel counting distribution to generate a local counting missing feature when gamma rays are incident from one side where the shielding structure is located; and the judging and imaging module is used for judging a gamma ray incident side based on the local counting missing feature and executing Compton imaging reconstruction in a corresponding hemispherical view field range according to the judged incident side. According to the invention, partitioned omnidirectional imaging can be carried out on the radioactive source under the condition that a detector does not need to act on depth information, and meanwhile, generation of mirror image artifacts is avoided.

The present application relates to a kind of additive manufacturing process crack real-time monitoring method, device, equipment and medium, comprising: S1.in the additive manufacturing process, the laser radiation signal for forming piece is collected in real time and conversion, and the converted electric radiation characteristic signal is handled, and the radiation signal thermogram of forming piece is obtained;S2.to the forming piece simultaneously carries out CT scanning and obtains image data, and after processing, crack characteristic distribution chart is obtained;S3.radiation signal thermogram and crack characteristic distribution chart correspond with the layer number of forming piece, and the radiation signal crack characteristic data set corresponding to layer by layer point by point is obtained;S4.data set is used to train machine learning or deep learning model, and crack determination model is obtained;S5.crack determination model is used for online monitoring to carry out crack identification.The method of the present application can form the radiation signal crack database corresponding to layer by layer point by point in three-dimensional space, and the data consistency and migratability are improved.

The utility model relates to the technical field of trays, in particular to a tray for switching positions of a rotary nailing machine, which comprises a supporting component, a positioning component, a positioning component and a rotating component, and is characterized in that the side surface of the supporting component is fixedly connected with the positioning component; the supporting assembly comprises a bottom frame, a stabilizing frame is fixedly connected to the bottom of the bottom frame, a rotating disc is fixedly connected to the center of the stabilizing frame, the side surface of the bottom frame is fixedly connected with the positioning assembly, and the positioning assembly comprises a containing frame. When wide foot piers on the placing frame on one side are fixed through the clamping frame and the limiting clamping plate and rotate to the side of the nail shooting robot for nail shooting, the placing frame on the other side can synchronously clamp and fix new foot piers, alternate operation on the two sides is achieved, the waiting time is greatly shortened, and the overall operation efficiency is improved.

The invention relates to a positioning method and device of wearable equipment, electronic equipment and a storage medium. The method comprises the following steps: continuously collecting inertial measurement data of the wearable equipment, detecting the moment when the wrist of a user wearing the wearable equipment swings to a target position based on the inertial measurement data, and calculating a mounting attitude angle corresponding to the wearable equipment by using the inertial measurement data corresponding to the moment, the method comprises the following steps: acquiring an installation attitude angle of a user, determining an initial motion parameter for the user according to the installation attitude angle, performing speed compensation on the initial motion parameter to obtain a target motion parameter, screening unshielded satellite measurement data based on the target motion parameter, and generating a positioning result by fusing the inertial measurement data and the satellite measurement data. According to the scheme provided by the invention, the positioning reliability of the wearable device can be improved in a complex urban environment.

The utility model relates to electronic product assembly technical field discloses a kind of electrically-conductive parts mounting equipment, comprising: bearing, including insertion section and exposed section, insertion section is connected with exposed section and is equipped with via, bearing is equipped with cavity and bearing surface, bearing surface is at least partially located insertion section, for bearing electrically-conductive parts, via is through bearing surface, cavity is communicated with via and is through the surface of exposed section;Limit protrusion, be located at the outer circumferential surface of exposed section;Jacking part, insert in cavity, and from exposed section, jacking part has jacking protrusion, jacking protrusion is movably inserted in via.The electrically-conductive parts mounting equipment of the utility model has the advantages of simple operation, electrically-conductive parts is not easy to deviate, yield and production efficiency is high.

The utility model discloses a positioning structure of a clock calendar ring, which comprises a main clamping plate and a calendar ring, the calendar ring is rotatably mounted on the main clamping plate, a plurality of shifting teeth are arranged on the inner periphery of the calendar ring at intervals, the calendar ring is intermittently driven by a driving part mounted on the main clamping plate to change positions, and a positioning groove is formed between every two adjacent shifting teeth. The middle of a positioning piece is hinged to the main clamping plate, the positioning piece is provided with two arms, one arm of the positioning piece is provided with a positioning part, the other arm of the positioning piece is provided with an elastic part or an elastic body, one arm of the positioning piece is clamped on one positioning groove through the positioning part to position the calendar ring, and the other arm of the positioning piece is connected to the main clamping plate; the elastic effect of the other arm of the positioning piece is utilized, so that when the driving piece intermittently drives the calendar ring to change the position, the positioning part can be matched with the other positioning groove for repositioning. The utility model has the advantages of simple structure, higher positioning reliability and lower assembly difficulty, and is easy to realize automatic assembly.

The invention relates to the technical field of material transportation, and discloses a conveying line material positioning mechanism which comprises a supporting assembly, a conveying mechanism and a positioning unit, the conveying mechanism and the positioning unit are both located above the supporting assembly, and the supporting assembly comprises a base, a transverse supporting rod and a longitudinal supporting rod; one side of the base is connected with the transverse supporting rod and the longitudinal supporting rod, and the transverse supporting rod and the longitudinal supporting rod are both used for increasing the transverse rigidity of the supporting assembly. Compared with the prior art, the spacing and the position between the baffles can be quickly and accurately adjusted, box type materials of various sizes and specifications can be adapted without shutdown for jig replacement, the flexibility of a production line is greatly improved, the small-batch and multi-variety modern production requirements are met, and the equipment adjusting time and the labor cost are reduced.

The invention relates to the technical field of switches, and discloses a positioning button switch based on a double-rib double-convex hull structure, which comprises a panel and at least one button, and is characterized in that the button is rotatably mounted on the panel; the button is provided with a first positioning rib and a second positioning rib, and the panel is provided with a first positioning groove and a second positioning groove; each first positioning rib is provided with a first convex hull, each second positioning rib is provided with a second convex hull, when the button is dialed, the first positioning ribs are inserted into the first positioning grooves, the first convex hulls abut against the inner walls of the first positioning grooves, or the second positioning ribs are inserted into the second positioning grooves, and the second convex hulls abut against the inner walls of the second positioning grooves. Through arranging two groups of positioning ribs and convex hulls on the button and arranging a matching structure of two groups of positioning grooves on the panel, the convex hulls abut against the positioning grooves when the button is in different dialing positions, the button does not shake left and right when being dialed, the problem that gaps between the button and the panel are inconsistent is solved, the button looseness is reduced, and the button reliability is improved. The positioning reliability and the operation hand feeling of the button switch are improved.

The present application relates to the technical field of visual detection, in particular to a cable joint box appearance detection method and system based on image processing, comprising the following steps: extracting indentation gray scale features and constructing a contour map, identifying direction mutation and marking rib turning points, extracting texture channels and demarcating gray scale ranges, extracting crack pixels to generate path atlas, and classifying crack forms to generate a list. In the present application, indentation gray scale features and edge coordinates are used to construct and restore boundary contours, thereby enhancing the accuracy of form recognition. Path direction analysis identifies direction mutation points, and the distribution of marked rib turning structures is combined to improve the ability to recognize complex contours. The arrangement direction of pixels and the gray scale gradient are used to demarcate and strengthen texture area discrimination, thereby ensuring the continuity of texture under fuzzy boundaries. Gray scale discontinuous pixels are used to construct crack paths and maintain connectivity, restore structure extension relationships, and support the classification of joint cracks by combining path mutation features and termination points, thereby improving positioning and discrimination depth.

The invention discloses an event-assisted unmanned aerial vehicle night precise landing system and method. The system comprises a high-frequency dynamic infrared sign array module, an event camera module, a pose resolving module and a landing control module. The system takes a high-frequency dynamic infrared mark array as a positioning reference, an event camera carried on the unmanned aerial vehicle captures an optical event flow with unique time sequence characteristics by accurately controlling the independent flicker frequency of each infrared light source, then the pose of the unmanned aerial vehicle is calculated by using an N-point perspective method, and finally accurate landing is realized by a landing control module. According to the invention, the event camera and the high-frequency dynamic infrared sign array are innovatively combined, the cooperative working mechanism of the event camera and the high-frequency dynamic infrared sign array is utilized, sub-millisecond-level positioning feedback is realized in a complex environment, the limitation of a traditional static optical sign is broken through, the positioning precision and reliability are improved, and the method is suitable for accurate take-off, landing and positioning of the unmanned aerial vehicle at night and in the complex environment.

This utility model relates to the field of production line material stacking technology and discloses a production line material stacking positioning card. The upper end of the base is fixedly installed with a surrounding plate. The two sides of the surrounding plate are symmetrically provided with storage slots. The bottom of the two storage slots is fixedly installed with two connecting seats. The upper end of the two connecting seats is provided with a groove. By setting a lifting mechanism composed of a bidirectional adjusting screw, a movable block and a diamond-shaped folding plate, when the handle is turned to drive the bidirectional adjusting screw to rotate, the reverse threads at both ends drive the movable block to move towards or away from each other, causing the folding plate to rotate around the shaft as the fulcrum. The horizontal displacement of the movable block is efficiently converted into the vertical lifting of the connecting seat, realizing precise adjustment of the lower pressure plate height. Because of the action inside the storage slot, the folding plate can be completely stored in the storage slot when folding, greatly reducing the axial space occupation in the non-working state and solving the installation and operation limitations in a space-constrained environment.

The present application belongs to the field of security and privacy technology, and particularly relates to a vehicle privacy technology detection method and system based on a shielding tent. A signal isolation environment is constructed in an electromagnetic shielding tent; a noise baseline model is established through frequency spectrum analysis; wireless terminal equipment detection is performed through a full-standard terminal analyzer; a non-linear node detector, an infrared thermal imager, a near-field signal detector, a backscatter X-ray machine, and an endoscope are used to perform regional collaborative scanning; combined with big data and machine learning algorithms, an over-standard signal source is located, and if a suspicious device is found, it is disposed in accordance with the rules and evidence is collected. The present application solves the problems of low standardization, high false alarm rate, low implementation efficiency, and low detection comprehensiveness of vehicle privacy technology detection in an open environment. It is suitable for detection of eavesdropping, peeping, and positioning devices of classified vehicles.

The invention relates to the technical field of artificial intelligence, and discloses a robot vision-guided grabbing control method and system, and the method comprises the steps: executing global approaching coarse positioning; after a preset distance threshold is entered, the frame rate is increased, a high-frequency visual servo mode is switched, geometric vectors of feature points are extracted, and pixel residual errors are calculated; kalman filtering is introduced to smooth a residual error, and an observation noise covariance matrix is dynamically adjusted according to a real-time image signal-to-noise ratio; mapping the smooth residual error into a six-degree-of-freedom speed compensation amount by using an image jacobian matrix; and the compensation amount and the original motion instruction vector are synthesized, and after S-shaped curve weighting and normalized amplitude limiting, a joint actuator is driven until the residual error converges. The system comprises a visual acquisition module, a feature extraction module, a residual calculation module, a visual servo controller and a motion execution module. By means of the scheme, high-precision and high-robustness dynamic grabbing is achieved, and dependence on camera calibration and three-dimensional reconstruction is remarkably reduced.

The invention relates to the technical field of large-scale structure space pose online compensation, and discloses an adjustment positioning system and method based on laser tracking, and the method comprises the steps: laying a plurality of laser tracking targets, and building an observation model with the pose and deformation separated; solving to obtain a rigid body posture estimation value and a deformation state estimation value; an executor instruction is updated, and a posture adjustment executor is driven to carry out posture adjustment; the die length of the deformation state estimation value is detected, and an unloading force balance fine adjustment process is triggered; judging whether the adjustment reaches the target precision or not; a laser tracking target is arranged and an observation model is introduced, measurement points collected by a laser tracker are modeled as superposition of rigid body poses and finite-dimensional deformation, rigid body rotation, rigid body translation and deformation modal coefficients are estimated, the poses and deformation can be separated from each other in the aspect of mechanism, and the measurement precision is improved. And the positioning precision and the installation and adjustment reliability of the high-precision optical installation and adjustment station are improved.

The utility model provides a tool handle type structure and steel plate drill relates to tool technical field, including handle part, the outer circle of handle part is provided with positioning groove and positioning flat, positioning groove is used for the steel ball of clamp to enter, it has an open end and positioning end, the depth of positioning groove gradually increases from open end to positioning end, the angle theta between the bottom surface of positioning groove and the axis of handle part, 0 < theta < 90, positioning flat is the plane structure of setting on the outer circle of handle part. By setting positioning groove at handle part outer circle, when handle part cooperates with clamp, axial movement and rotary displacement are limited through positioning groove, when handle part is clamped and pre -tensioned, after pulling pre -tensioning effect is produced, makes handle part end surface and clamp end surface close, improves positioning accuracy and positioning reliability.

This application provides a method and system for high-precision positioning and correction of unmanned aerial vehicles (UAVs) based on BeiDou tri-frequency signals. The method first receives a tri-frequency signal group transmitted by the BeiDou satellite navigation system. Then, utilizing the dispersion characteristics of the tri-frequency signal group propagating in the ionosphere, a real-time correction value for ionospheric delay error is generated. Next, multipath effect characteristic data caused by terrain undulations during agricultural surveying operations is acquired. Then, the multipath effect characteristic data is coupled with the real-time correction value to construct a dynamic error suppression model. Finally, the dynamic error suppression model is used to correct the original positioning trajectory of the UAV point by point to output a high-precision positioning result. The technical solution provided by this application not only effectively solves the combined interference problem of ionospheric delay and multipath effect, but also achieves high-precision positioning of UAVs in complex agricultural terrain environments, significantly improving the accuracy and environmental adaptability of the positioning results.

The application discloses a mesh filter, a gearbox and an assembling method. One end of a steel pipe is connected with a pipe joint, and the other end is connected with a screw plug. A magnet is arranged in the steel pipe. An oil suction port is arranged on the pipe wall of the steel pipe. A filter screen is connected with the oil suction port. The magnet is arranged at the end of the steel pipe. A necking portion is arranged on the steel pipe and is arranged between the filter screen and the magnet. The diameter of the necking portion is smaller than the minimum diameter of the magnet. The end of the steel pipe away from the magnet is provided with an expanding portion. The mesh filter has sufficient filtering area. The filter screen can be arranged at the lower end of the steel pipe. The oil passing capacity is high. The two ends of the steel pipe are provided with matched positioning. The positioning reliability is good. The two ends of the steel pipe are provided with sealing rings. The sealing performance is good. The mesh filter can be arranged close to an oil pan. The normal oil suction function is not affected when the liquid level is low. The depth requirement of the oil pan is low. The longitudinal space of the whole gearbox is reduced. The shell of the gearbox is provided with a groove. The longitudinal space occupied by the filter is further reduced.

This application provides a model training method, a method and device for predicting the acetabular prosthesis implantation angle, belonging to the field of deep learning technology. Addressing the current problems of high material costs, high time costs, and low accuracy in individualized positioning, it trains a first convolutional neural network model using acetabular prosthesis images and acetabular prosthesis implantation positioning data from different patient samples to obtain a target acetabular prosthesis implantation angle prediction model. When using this model for targeted positioning of target patients, it can save on the high material and time costs associated with computer modeling simulation testing and 3D printing. Simultaneously, it can avoid excessive subjective assessment errors by doctors to a certain extent, thereby improving the positioning accuracy and reliability of acetabular prosthesis implantation angle prediction.

The utility model provides a walking wheel synchronous winding and unwinding mechanism and a pipeline aligning device. The walking wheel synchronous winding and unwinding mechanism comprises a base body, a driving mechanism and a driving mechanism, the driving unit is arranged at the central position of the base body; the multiple walking wheel assemblies are distributed in the center of the base body in the circumferential direction in an array mode. The transmission assembly comprises multiple sets of rigid transmission elements of the same structure, the multiple sets of rigid transmission elements are evenly distributed in a radial shape with the driving unit as the center, and each set of rigid transmission element is provided with a walking wheel assembly corresponding to the rigid transmission element. The linear output end of the driving unit is connected with one ends of all the rigid transmission elements at the same time, and the ends, away from the driving unit, of all the rigid transmission elements are connected with the corresponding walking wheel assemblies respectively. And the linear motion of the driving unit is synchronously converted into the radial retraction motion of all the walking wheel assemblies through the transmission assembly. According to the structure, the structure is highly simplified, the cost is remarkably reduced, the synchronism and action consistency of the multiple walking wheels are improved, deflection clamping stagnation is eliminated, and the positioning precision and reliability are improved.

The present application relates to photovoltaic array integration axis positioning control method, including the following steps: the installation position of the first stake and the tail stake of the photovoltaic array is positioned, and the first stake and the tail stake are installed respectively in the corresponding installation position;Install fixed support to the first stake and the tail stake, and install the tensile measuring rope on the top of the two fixed supports, adjust the height of the fixed support, so that the tensile measuring rope is in the preset slope;According to the preset stake spacing, mark on the tensile measuring rope, and install the plumb bob at the mark;The vertical projection of the tip of the plumb bob on the ground is installed in the middle stake;Install the fixed support on the top of the middle stake, and make the top of the fixed support connected to the tensile measuring rope;Install multiple inclination sensors on the tensile measuring rope between the first stake, the middle stake and the tail stake, and adjust the height of the fixed support on the middle stake, aiming at the same inclination data feedback by the multiple inclination sensors.

This invention discloses a method and system for enhancing the accuracy of downhole target positioning based on the Internet of Things (IoT). The method includes: a terminal collecting target positioning-related data in real time to determine the target location and calculating the target displacement; recording the target displacement within a set time period as a continuous displacement sequence; calculating the error evaluation result of the current target displacement based on the continuous displacement sequence; when the error evaluation result exceeds a set error threshold, determining the surrounding positioning devices based on a set effective radius of the positioning device; each surrounding positioning device collecting target positioning-related data and transmitting it to the terminal via the IoT; the terminal using the target positioning-related data to determine multiple target locations; dividing all target locations into multiple clusters based on a K-means clustering algorithm; calculating the clustering rationality coefficient based on the center point of each cluster; and using the center point of the cluster with the largest clustering rationality coefficient as the current target location. This invention has significant advantages such as accurate positioning and high reliability.