1162results about How to "Improve positioning efficiency" patented technology

The invention provides a power grid fault detection and positioning method and system for an intelligent power grid system. The method comprises the following steps: collecting a fault traveling wave signal when a power distribution line has a fault; preprocessing the fault traveling wave signal to obtain a preprocessed target fault traveling wave signal; carrying out traveling wave front edge detection on the target fault traveling wave signal, and determining the signal arrival time of the fault traveling wave signal; fault signal features are extracted from the target fault traveling wave signals through a frequency domain analysis method and a time domain analysis method; estimating the fault line characteristics of the fault line with the fault in combination with the fault signal characteristics and the signal arrival time; outputting the line type and the fault type of the fault line through a feature recognition model; selecting an optimal fault positioning algorithm by using a decision tree algorithm based on the line type and the fault type; and determining the line position of the fault line according to the target fault traveling wave signal by adopting an optimal fault positioning algorithm. The method has the effect of intelligently selecting the optimal positioning algorithm according to the line type.

The invention relates to the technical field of data processing, and discloses a double-end fault positioning method based on signal enhancement, which is used for improving the efficiency of double-end fault positioning based on signal enhancement. The method comprises the following steps: acquiring and preprocessing electrical signals at two ends of a power transmission line to obtain preprocessed synchronous electrical signals; performing adaptive enhancement processing on the preprocessed synchronous electrical signal to obtain an enhanced fault feature signal; performing time-frequency analysis and feature extraction on the enhanced fault feature signal to obtain a fault feature vector and a key parameter; performing machine learning analysis on the fault feature vectors and the key parameters to obtain a fault type identification result and initial fault position estimation; performing multi-algorithm fusion analysis on the preliminary fault position estimation to obtain an accurate fault position coordinate; and performing geographic information mapping and field verification on the accurate fault position coordinates to obtain a fault positioning result and system optimization data.

The invention discloses a link reliability tracking and optimizing method combined with real-time monitoring, and relates to the technical field of data transmission. Comprising the following steps: constructing a topological graph of a full link based on component information and a data flow relationship of a data medium station, and deploying a data acquisition probe to acquire link data in real time; a potential fault or an abnormal link is automatically identified; based on the data map, sorting the data dependency relationship of the upstream and downstream of the link, recording the relevance and dependency path of each component, and forming an accurate link blood relationship map; link abnormal conditions are captured and backtracked, log information is summarized in a unified mode, and centralized analysis and problem positioning are carried out; and on the basis of operation historical data of the link, according to the time sequence prediction model, identifying a bottleneck and a high-risk area in the link, dynamically adjusting a transmission strategy of the link, and optimizing load balance and a link priority of a station in the data in real time. According to the invention, the influence on the service when the fault occurs is reduced, and the abnormal problem positioning efficiency is improved.

The invention discloses a partial discharge positioning method, system and device based on an acoustic-electric combined signal, and relates to the technical field of electrical device detection, and the method comprises the steps: deploying a plurality of sensor nodes based on a target electrical device, and collecting an electromagnetic signal and a sound wave signal generated by partial discharge at the same time; calculating a preliminary positioning result of the partial discharge source based on the collected acoustic-electric combined signal; environment parameter data, historical operation data and electrical equipment structure information in the electrical equipment are collected and input into a preset error correction model, and a corresponding error correction interval is obtained; when a certain preliminary positioning result exceeds the corresponding error correction interval, obtaining a timestamp corresponding to the preliminary positioning result; performing multi-source information fusion positioning based on the environmental parameter data, the historical operation data, the electrical equipment structure information and the corresponding timestamps, and analyzing and determining final positioning coordinates of the partial discharge source; the accuracy of partial discharge signal positioning is improved, and the positioning efficiency is improved.

The invention relates to the technical field of fault detection for a wireless communication network, and discloses a fault detection method for the wireless communication network. By collecting data of base station signal strength, network delay, data packet loss rate and user equipment signal quality, the problem of insufficient fault detection caused by a single index is solved. Through multi-dimensional data acquisition, the system can comprehensively evaluate network performance, the fault detection accuracy is improved, and different fault types can be effectively identified especially in a complex fault mode. By storing the data according to the time sequence, the problem of time sequence chaos is avoided, and accurate detection of time-varying faults is ensured. The comprehensive data vector generated by each time of sampling comprises a plurality of network performance indexes, so that the fault detection and positioning capability is improved. Abnormal values are eliminated through data preprocessing, the data quality is ensured, an accurate basis is provided for subsequent analysis, and the reliability of a detection result is ensured.

The invention discloses a cable joint early warning method, device and equipment and a storage medium, and the method comprises the steps: carrying out the preprocessing of a collected effective temperature data set, and constructing an initial temperature relation model; continuously acquiring real-time surface temperature data and environment temperature data of the cable joint, and calculating real-time internal temperature and temperature anomaly degree by using the initial temperature relation model and the temperature data acquired in real time; according to the temperature abnormal degree and the change trend thereof, performing multi-stage division on the abnormal condition, and generating temperature early warning information containing the abnormal degree and the position information; and when the temperature early warning information appears, retrieving a pre-established historical temperature anomaly case library, finding out historical cases similar to the current temperature anomaly condition, and generating targeted temperature anomaly processing suggestions according to the retrieved similar historical cases and the current power grid operation condition. According to the technical scheme of the invention, the potential abnormal temperature condition of the cable joint can be identified timely and accurately, and effective early warning and processing suggestions can be provided.

The invention relates to the technical field of radiator machining, in particular to an aluminum metal radiator machining device and a machining process thereof. The aluminum metal radiator machining device comprises a bottom frame, an adjusting mechanism is arranged on the surface of the bottom frame and comprises a first guide rail, and the first guide rail is fixedly connected to the surface of the bottom frame; the surface of the first guide rail is slidably connected with a first sliding block, the surface of the first sliding block is fixedly connected with a moving table, the surface of the bottom frame is fixedly connected with a fixing plate, and the surface of the fixing plate is fixedly connected with a first motor. According to the cooling fin welding device, cooling fins can be arranged on the placing plate in advance in the welding process, then the cooling fins are clamped and positioned through the adjusting mechanism and the clamping mechanism, the positioning efficiency of the cooling fins is improved, the welding machining time of the cooling fins is greatly shortened, and the welding machining efficiency of the cooling fins is improved; therefore, the machining efficiency of the aluminum metal radiator is improved, and the production yield of the aluminum metal radiator is guaranteed.

The invention provides a molten pool grain solidification analysis method and device based on a continuous growth limiting factor, and belongs to the field of material processing. The method provided by the invention comprises the following steps: establishing a first relationship between a continuous growth limiting factor and a model for predicting the continuous growth rate of crystal grains; according to the first relationship, determining a second relationship between a model for predicting the continuous growth rate of the crystal grains and the solidification path, and along with the increase of the solidification path, exponentially increasing a growth curve corresponding to the second relationship; determining a demarcation point according to the correlation among the solute concentration, the welding speed and the solidification path; calculating the curvature radius of each point on the growth curve; and determining a demarcation point of plane growth and cellular growth according to the calculated curvature radius. According to the molten pool grain solidification analysis method and device based on the continuous growth limiting factor, provided by the invention, help can be provided for establishing a solidification mode conversion criterion near a melting boundary and mastering a grain size evolution rule.

The invention relates to a direct positioning method in the presence of a site error, belongs to the technical field of radiation source positioning, and solves the problems of high positioning delay and poor precision of a radiation source position in the prior art. The direct positioning method comprises the following steps: based on an observation station measurement position model, performing Taylor series first-order expansion on an observation station measurement signal model at the measurement position of each observation station to obtain an expanded observation station measurement signal model; constructing a cost function of a radiation source position according to the real-time error model, the measurement signal of each observation station and the real-time position signal model; and according to each possible position of the radiation source, determining the maximum characteristic value corresponding to each possible position in the cost function of the radiation source position by adopting a grid search method, and taking the possible position corresponding to the maximum characteristic value as the positioning position of the radiation source. And rapid and accurate positioning of the position of the radiation source is realized.

The invention discloses a digital mark deviation correction method and system based on electronic tags, and the method comprises the steps: collecting the three-dimensional position information of each electronic tag in real time, comparing the three-dimensional position information with a preset safety position, judging whether the tag drifts or not, reconstructing a real motion path of the tag through a Kalman filtering algorithm if the tag drifts, and carrying out the correction of the digital mark deviation. Combining environmental sensor data, constructing feature vectors, analyzing the feature vectors by using a support vector machine algorithm, identifying potential reasons causing position drift, grouping abnormal tags by using a K-Means clustering algorithm, determining an area in which a deployment strategy needs to be adjusted, and automatically adjusting tag density and positions according to the frequency and amplitude of tag drift in the area, so as to improve the deployment accuracy. The positioning precision and the reliability of drifting detection are improved, accurate detection and reason identification of article position drifting are realized, a label deployment strategy can be adaptively adjusted, and the article positioning and management efficiency is improved.

The invention relates to the technical field of pipe network monitoring, in particular to a water supply pipe network pipe burst alarm positioning system based on real-time pressure monitoring data, and the system comprises a pressure data collection module which collects pressure data from a plurality of pressure monitoring points of a water supply pipe network; the pressure drop threshold calculation module is used for determining an alarm pressure drop threshold of each pressure monitoring point based on historical pressure data; the voltage drop alarm module is used for calculating a current time window voltage drop value and comparing the current time window voltage drop value with a voltage drop threshold value; the association alarm module is used for clustering alarm information of adjacent pressure monitoring points and combining a plurality of alarm points which are close in space into a single alarm event; the alarm positioning module is used for matching a pipe explosion node corresponding to the current alarm information by utilizing a mode recognition algorithm and quickly positioning the pipe explosion node; according to the method, the system calculates the aggregation characteristics, the description capability and the credibility of the alarm event are enhanced, and the identification and positioning efficiency of the system on the pipe explosion event in the complex pipe network environment is improved.

The invention belongs to the field of machining equipment, and discloses man-machine cooperation machining equipment and method based on an automatic feeding drill. The man-machine cooperation machining equipment comprises an auxiliary mechanical arm, a tail end posture adjusting module, a machining module and an auxiliary positioning module. Wherein the auxiliary mechanical arm is used for assisting manual movement of the tail end function module and the machining equipment; the tail end posture adjusting module is used for adjusting the posture of tail end machining equipment to adapt to the surface of the workpiece; the machining module is used for clamping machining equipment and conducting hole forming work; and the auxiliary positioning module is used for assisting manual visual positioning and auxiliary fixing. The auxiliary mechanical arm and the functional modules at the tail end assist manual movement of the automatic feeding drill, positioning, normal vector finding and pre-tightening force applying, so that the automatic feeding drill can perform drilling work on various types of workpieces under the condition that the automatic feeding drill is separated from a drill jig tool, the labor intensity of workers is greatly relieved, and the production cost is reduced.

The invention relates to the technical field of image processing, in particular to a vacuum printed PCB precise feeding method and system guided by machine vision, and the method comprises the steps: obtaining the feature points of a to-be-positioned PCB image and the feature points of a real PCB image; calculating the credibility of each feature point of the real PCB image, screening out a target feature point according to the credibility, and matching the target feature point with the feature points of the to-be-positioned PCB image to complete positioning and feeding of the real PCB image; wherein the calculation of the credibility of the feature points comprises the step of clustering the feature points of the real PCB image to obtain a plurality of clusters. According to the invention, by screening the feature points of the real PCB image, it is ensured that the feature points are more accurate and stable, mismatching is reduced, and the accuracy of image matching is improved; and some redundant or unimportant feature points can be removed, so that the workload of subsequent matching and calculation is reduced.

The embodiment of the invention provides a chip short circuit point positioning method and system. A to-be-tested chip comprises a chip layer, a packaging layer and a substrate layer which are stacked in sequence. The method comprises the following steps: applying a test voltage to the chip to be tested; obtaining a thermal imaging image of the surface of the chip to be detected and obtaining time of obtaining the thermal imaging image; and according to the test voltage, the thermal imaging image and the acquisition time, positioning the short circuit point position of the to-be-tested chip. According to the chip short-circuit point positioning method and system provided by the embodiment of the invention, the thermal imaging image of the short-circuit point is obtained, and the positions of the short-circuit point in the horizontal direction and the vertical direction are obtained at the same time in combination with the conditions such as the image display time and the voltage applied during image display; direct and accurate positioning of the short-circuit failure point of the electronic component such as the chip is achieved, screening is not needed layer by layer, and the chip short-circuit point positioning efficiency is greatly improved.

The invention relates to the technical field of tunnel engineering, in particular to a drilling and mounting separated anchor rod mounting trolley and method. The left anchor rod mounting arm assembly comprises a first moving mechanism, an anchor rod pushing mechanism, an anchor rod library and an anchor rod manipulator, and the first moving mechanism is used for adjusting the axial position, the pitching angle, the horizontal angle and the rotation angle of the anchor rod pushing mechanism; the structure of the right anchor rod mounting arm assembly is the same as that of the left anchor rod mounting arm assembly, and the positions of the right anchor rod mounting arm assembly and the left anchor rod mounting arm assembly are symmetrical; and the middle drill arm is positioned between the left anchor rod mounting arm assembly and the right anchor rod mounting arm assembly. The technical problems that in the prior art, due to excessive integration of functions of anchor rod mechanical construction equipment, on-site equipment operation difficulty is large, and large-section tunnel vehicle moving construction efficiency is low are solved.

The invention provides a round optical sighting telescope lens machining and positioning tool, and belongs to the technical field of lens machining and positioning, the round optical sighting telescope lens machining and positioning tool comprises a bottom plate, a support is fixed to the upper end face of the bottom plate, a bearing table is fixed to the upper end face of the support, two mounting frames are arranged on the upper side of the support, and positioning structures are arranged in the two mounting frames; and a height-adjusting turn-over structure is arranged on the lower side of the bracket. Through the arrangement of the mounting frame and the positioning structure, the three positioning plates are linked to automatically clamp and fix the circular optical sighting telescope lens, the circular optical sighting telescope lens with different sizes can be conveniently adapted, the whole positioning process is relatively simple, the operation of operators is facilitated, the positioning efficiency is remarkably improved, the positioning precision is also ensured, and the working efficiency is improved. The positioning effect of the lens of the circular optical sighting telescope is further improved, and the problem that in the prior art, the positioning effect is poor is solved.

The invention relates to the technical field of laser welding, in particular to a positioning tool for laser welding, which comprises a platform, a motor is mounted on the outer wall of one side of the platform, one end of an output shaft of the motor is connected with a two-way screw through a coupler, and the outer walls of the two sides of the two-way screw are connected with a sliding frame through threads. A first sliding groove is formed in the outer wall of one side of the sliding frame, a clamping frame is slidably connected to the inner wall of the first sliding groove, a second sliding groove is formed in the outer wall of one side of the top of the clamping frame, a locking frame is slidably connected to the inner wall of the second sliding groove, and locking plates are fixedly connected to the outer walls of the two sides of the bottom end of the locking frame. The clamping plate pushes the bottom plate, the limiting plate rotates to be horizontal to limit the top of a workpiece under the linkage effect, and after the limiting plate rotates, the locking structure automatically slides downwards to be inserted into the corresponding position of the clamping structure for locking under the gravity effect, so that the clamping and positioning effect is improved, the machining error is reduced, and the repeated positioning precision is improved; and the positioning efficiency of the laser welding positioning tool is improved.

The invention relates to a wall-climbing robot positioning system and method based on a space structure circular descriptor. A depth image sensor (RGB-D) camera outputs a depth image; collecting three-dimensional point cloud data of three-dimensional space wall surface points; and conformally mapping the contour of the wall-climbing robot to a minimum bounding ball (MBS). A space structure circular descriptor (SSCD) algorithm module maps the three-dimensional point cloud data to a two-dimensional positioning navigation plane, and an SSCD image is formed on the two-dimensional positioning navigation plane; and point cloud features of the SSCD images from the k-1 moment to the k moment are matched, and positioning of the wall-climbing robot on the three-dimensional space wall surface at the current moment is completed. An airborne inertial measurement unit (IMU) measurement module acquires the angular velocity and acceleration of the wall-climbing robot; the attitude information of the wall-climbing robot at the current moment is obtained by carrying out pre-integration on the collected angular velocity and acceleration. Therefore, three-dimensional data are mapped to a two-dimensional plane through a space structure circular descriptor (SSCD) algorithm, and the wall-climbing robot is accurately positioned and navigated.

The invention provides an under-forest economic area multi-unmanned aerial vehicle cooperative positioning method, and belongs to the technical field of positioning navigation application. The method comprises the following steps: acquiring an all-sky photo of an under-forest point location, and calculating the crown opening degree of the point location; the hovering positioning time of the unmanned aerial vehicle is set according to the crown opening degree, and under-forest hovering positioning of the base station unmanned aerial vehicle is carried out by using satellite signals; positioning the under-forest sensing unmanned aerial vehicle cluster based on the position information of the base station unmanned aerial vehicle; on the basis of multi-unmanned-aerial-vehicle cooperation of the base station unmanned aerial vehicle and the sensing unmanned aerial vehicle cluster, under-forest positioning signals are explored, and multi-unmanned-aerial-vehicle cooperative under-forest positioning is achieved According to the method, efficient and accurate positioning of the under-forest economic area can be achieved through cooperation of satellite signals and the multiple unmanned aerial vehicles, the position information service of vertical integration of the canopy is promoted, mechanical and automatic support is provided for under-forest planting and breeding, and intensive and efficient development of under-forest economy is assisted.

The invention relates to the technical field of HDPE pipeline shipping, in particular to an HDPE pipeline mooring and positioning system and method.The HDPE pipeline mooring and positioning system comprises a barge, a crane ship, a tugboat, a plurality of auxiliary ships and a plurality of positioning anchors, the tugboat is used for dragging an HDPE pipeline, the barge and the crane ship are used for positioning the HDPE pipeline from the two ends of the HDPE pipeline, and the auxiliary ships are used for positioning the HDPE pipeline from the two ends of the HDPE pipeline. The positioning anchors are symmetrically arranged on the two sides of the HDPE pipeline and used for positioning the HDPE pipeline, and the auxiliary ship is used for moving the HDPE pipeline. Compared with a traditional steel pipe pile construction technology, the mooring positioning system provides stable positioning points through the positioning anchors symmetrically arranged on the two sides of the HDPE pipeline, construction steps are simplified through cooperative operation of a tugboat, a barge, a crane ship and an auxiliary ship, particularly, complex steel pipe pile mounting and dismounting do not need to be conducted, the construction time is greatly shortened, and the construction efficiency is improved. And the construction efficiency is obviously improved.

The invention discloses a positioning device for aluminum profile door and window machining and a positioning method of the positioning device, and relates to the technical field of aluminum profile door and window machining. The positioning device comprises two supporting frames, a workbench is fixedly installed at the upper ends of the two supporting frames, a cutting opening of a cross structure is formed in the surface of the workbench, and a mounting frame is fixedly installed on the surface of the workbench; an automatic telescopic rod is fixedly mounted on the lower surface of the mounting frame, and a mounting ring is fixedly mounted at the output end of the automatic telescopic rod. By arranging the positioning structure, an aluminum profile plate can be quickly positioned and clamped by standing on a pedal frame; and the aluminum profile plate can be accurately positioned to the middle position of the workbench to be cut and machined, the aluminum profile plate can be rapidly taken out by moving down from the pedal frame, the phenomenon that the positioning time is wasted due to the fact that a lead screw is used for driving traditionally is avoided, and the positioning efficiency of the aluminum profile plate is improved to a certain degree.

The invention discloses a method for locating the position of a software problem source code through a log and electronic equipment, and the method comprises the steps: obtaining log output points of target software, creating an index record for the log output points, detecting the source code position information of each log output point, analyzing the log content of each log output point based on the source code position information, extracting and generating characteristic values corresponding to the log content, constructing a log index database, receiving an actual running log, extracting the characteristic values of the log, performing matching in the log index database to determine the position of a source code corresponding to a log output point, and positioning the specific position of the source code according to a matching result. According to the method, the code performance and readability are improved, the method does not depend on code position information output in the log, the requirement for the log format is lowered, the code readability is enhanced, and the integrity of the log is improved by scanning the code and proposing suggestions for improving the log.

The invention relates to the technical field of cables, in particular to a power cable capable of positioning a damage position, which comprises a cable main body, a plurality of fixed bases which are distributed in a straight line and are of a circular ring structure are fixedly mounted on the outer wall of the cable main body, and a protective layer of a circular tube structure is arranged between two adjacent fixed bases on the same cable main body. The two ends of the protection layer are fixedly installed on the corresponding side walls of the fixed base respectively, and the protection layer is made of rubber flexible materials. The protection layer is designed, the protection layer can protect the cable body, inert gas is matched to enable the protection layer to rapidly gush out of the colored ribbons after the protection layer is damaged, rapid positioning of maintainers is facilitated, and when the protection layer is damaged, the air pressure in the inflation bin is reduced, so that the maintenance efficiency is improved. Through cooperation of the spring rods and the spring blocks, the corresponding indicator lamps can be turned on, and maintenance personnel can quickly position a damaged area by turning on the indicator lamps on the two adjacent fixed bases.

The utility model provides sectional material storage equipment, which relates to the field of sectional material storage, and adopts the technical scheme that the sectional material storage equipment comprises a material storage frame and a support frame, and further comprises a sectional material correction unit, the sectional material correction unit comprises a lifting beam, a conveying belt assembly and a positioning assembly, the lifting beam is arranged along the sectional material conveying direction and is connected with a driving part, and the conveying belt assembly is connected with the positioning assembly. The driving part can drive the lifting beam to move in the vertical direction, the driving part is connected with the input assembly, the multiple conveying belt assemblies are arranged on the lifting beam in parallel, the conveying direction of the conveying belt assemblies is perpendicular to the conveying direction of the input assembly, and the tops of the conveying belt assemblies are higher than the input assembly after the conveying belt assemblies are lifted. The positioning column is located at the conveying final position of the conveying belt assembly, the lower portion of the positioning column is connected with a supporting plate, and the top of the supporting plate is not lower than the top of the conveying belt assembly after descending. The sectional material correcting device can automatically correct sectional materials, avoids deflection and mechanical faults, and achieves full-automatic warehouse-in and warehouse-out.

The invention relates to the technical field of intelligent parking management, and discloses an intelligent parking management method and system based on license plate recognition, and the method comprises the steps: carrying out the parking lot parking space recognition of a preprocessed parking lot panoramic image; performing license plate recognition on different parking space areas of the parking lot to obtain unoccupied parking space distribution information; calculating to obtain the optimal parking space of the currently driven-in vehicle; a vehicle driving-in route between the driving-in vehicle and the optimal parking space is planned, and the driving-in vehicle drives to the optimal parking space according to the vehicle driving-in route to be parked. The linear functions of the edge points in the panoramic image of the parking lot at different parking space included angles are accumulated and counted to obtain the positions of parking spaces in the parking lot, license plate recognition is performed on different parking space areas to obtain the distribution of unoccupied parking spaces in the parking lot, quantitative evaluation is performed on different unoccupied parking spaces in combination with multi-dimensional quantitative indexes, and the optimal parking space is selected. And route planning of the optimal parking space and the current position of the vehicle is carried out, and the management efficiency of the parking lot is improved.

A rotor magnetic tile pasting device comprises a working table, a rotary table is arranged on the working table, a rotor clamp is arranged on the rotary table in the circumferential direction, a dispensing mechanism, a magnetic tile pasting mechanism and a magnetic tile pressure maintaining mechanism are arranged above the rotary table, a magnetic tile feeding mechanism is arranged on one side of the magnetic tile pasting mechanism, and the magnetic tile pasting mechanism comprises a pressing disc; a lifting assembly is arranged at the upper end of the crimping disc, magnetic shoe positioning grooves are formed in the lower end face of the crimping disc, magnetic shoe guide grooves are formed in the outer sides of the magnetic shoe positioning grooves, the bottoms of the magnetic shoe positioning grooves and the bottoms of the magnetic shoe guide grooves are communicated through sliding block guide grooves, and ferromagnetic sliding blocks reciprocating in the horizontal direction are arranged in the sliding block guide grooves; a positioning ring made of a non-magnetic material is further arranged below the pressing disc, and a catalyst adding device is arranged at the output end of the magnetic shoe feeding mechanism. The magnetic shoes are positioned and guided through the pressing disc made of the non-magnetic-conductive material, the ferromagnetic sliding block is used for driving feeding positioning of the magnetic shoes, and external interference borne by the magnetic shoes in the positioning process is reduced.

The invention discloses a positioning method based on a weight factor and a WKNN, and relates to the technical field of Bluetooth positioning. The method comprises the following steps: dividing a preset site into a grid structure, and setting a positioning initial reference point at a node of each grid; setting a plurality of Bluetooth positioning beacons in a preset site, wherein the Bluetooth positioning beacons are used for sending Bluetooth signals to a plurality of positioning initial reference points and a to-be-positioned point; obtaining a first coordinate corresponding to each positioning initial reference point, and obtaining a plurality of first received signal strength indication values received by each positioning initial reference point; acquiring a plurality of second received signal strength indication values received by the to-be-positioned point; and obtaining an actual coordinate corresponding to the to-be-positioned point based on the plurality of first coordinates, the plurality of first received signal strength indication values and the plurality of second received signal strength indication values. By implementing the technical scheme of the invention, the accuracy of Bluetooth positioning measurement of the coordinates of the to-be-positioned point can be improved.

The invention discloses a fan rotating part anomaly detection method based on artificial intelligence. The fan rotating part anomaly detection method comprises the steps that S1, a fan rotating part sound signal set is constructed; s2, generating a fan rotating part sound signal feature vector set; s3, training to obtain a deep neural network model for detecting the abnormal state of the fan rotating part; s4, a hierarchical reinforcement learning algorithm is utilized to analyze and classify the feature vector set of the fan rotating part, and a high-level strategy judges whether to activate a low-level strategy according to the operating environment and the load condition of the fan and the overall change trend of the sound signal set; according to the low-layer strategy, whether an abnormal state exists or not is further judged according to the fan rotating component feature vector set; s5, denoising and filtering parameters of the sound signal set are adjusted in real time; and S6, when the low-level strategy identifies an abnormal state through analysis of the feature vector set, the system automatically triggers an alarm mechanism. According to the method, the fan anomaly detection cost is reduced, and the detection precision and the intelligent level are improved.

The invention relates to the technical field of valve production positioning, in particular to a positioning mechanism for valve production. The technical problems that when a valve body is machined, the valve body is prone to shaking slightly, when an existing positioning mechanism positions the valve body, the valve body is inconvenient to support from multiple directions, the valve body is not stable enough in the machining process, the pulling force of tool retracting of a drill bit can generate large acting force on the valve body, and the machining precision is poor are solved. However, an existing positioning mechanism is difficult to fix the bottom of the valve body, so that the valve body is easy to deviate during machining, and the positioning effect on the valve body is poor. A positioning mechanism for valve production comprises a supporting seat; and the two guide columns are fixedly connected to the supporting seat. And when the second rotating seat clamps the valve body, four groups of second piston rods abut against included angles among four channels of the valve body, so that the valve body is supported from multiple directions, the valve body is more stable in the machining process, and the positioning effect is further enhanced.

The utility model discloses a circle run-out detection device, which belongs to the field of detection equipment and is used for solving the problem that the existing bar circle run-out detection is not accurate and efficient enough, the circle run-out detection device comprises a base, a positioning block, a bottom positioning device, a rotating mechanism and a detection mechanism, the positioning block is arranged on the base and is provided with a V-shaped positioning hole, and the bottom positioning device is arranged on the bottom positioning device. The positioning device is used for positioning the side face of a bar which is vertically placed. The bottom positioning device is used for positioning the bottom of the bar; the rotating mechanism comprises a mounting seat, a driving motor, a belt pulley and a tensioning belt, the driving motor, the belt pulley and the tensioning belt are arranged on the mounting seat and are sequentially in transmission connection, the tensioning belt is used for pulling the bar so that the side face of the bar can make contact with and be positioned on the inner side of the positioning hole, and the tensioning belt is further used for driving the bar to rotate; and the detection mechanism is used for detecting the circle run-out of the bar. The circle run-out detection device provided by the utility model can improve the accuracy of a detection result, improves the product positioning efficiency, and is beneficial to batch detection of products.