144results about How to "Realize high-precision positioning" patented technology

The invention relates to the technical field of water source pollution investigation, and particularly discloses a soil groundwater pollution fine investigation method which comprises the steps of S1, pollution source investigation, S2, sampling design, S3, laboratory analysis, S4, ecological risk assessment, S5, restoration suggestion and S6, dynamic monitoring. According to the invention, through machine learning and big data analysis, historical pollution data, field sampling data and spatial geographic information can be effectively integrated to form an accurate pollution source distribution map, which not only facilitates identification of pollution hot spot areas, but also can predict the pollutant diffusion trend through a data-driven model to provide dynamic prediction of future pollution evolution; according to the method, high-precision positioning of a complex pollution area is realized, blind sampling and invalid investigation are reduced, the resource utilization efficiency is improved, the area where pollutants are possibly diffused in the future can be predicted, prevention and control measures are taken in advance, and further environmental damage is avoided.

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 belongs to the field of building surveying and mapping, and particularly discloses a building three-dimensional defect detection method, device and equipment based on multi-sensor fusion, and the method comprises the steps: obtaining data detected by a laser radar, an IMU, a wheel speed meter and image capturing equipment; fusing the data observed by the laser radar, the IMU and the wheel speedometer based on the ESKF, and determining the speed and the pose of the vehicle-mounted acquisition equipment; obtaining a three-dimensional point cloud model under a world coordinate system by combining the speed, the pose and the point cloud data observed by the laser radar; generating a corresponding three-dimensional Gaussian function according to the three-dimensional point cloud model, projecting the three-dimensional Gaussian function in a world coordinate system to a coordinate system of an image capturing device in combination with a pose, and performing microrasterization to obtain a preliminarily rendered image; and constructing a loss function in combination with a visual image observed by an image capturing device, optimizing the three-dimensional Gaussian function, and iterating to obtain a rendered three-dimensional visual model. According to the invention, fusion positioning and high-precision mapping of the building are realized in combination with multiple sensors.

The invention discloses an LDI target high-precision positioning method based on deep learning, and relates to the field of image processing, and the method comprises the steps: carrying out the edge detection of a to-be-positioned LDI target image through an edge detection model; and further carrying out gray gradient analysis on candidate edge pixel points in the obtained detection result image, and screening out target edge pixel points to carry out circle fitting so as to realize high-precision positioning. A pooling module and a parallel jump connection module in the edge detection model are designed by introducing wavelet transform into the edge detection model, so that the problem of sampling high-frequency detail loss under the edge detection model can be avoided, and the multi-level feature extraction and utilization capability of the edge detection model is improved; in combination with a method of first coarse positioning and then fine positioning, high accuracy and robustness of edge positioning can be ensured, so that the method can stably detect the edge under complex background and changeable image conditions, and the detection effect and practicability are greatly improved.

The invention discloses a moving target positioning method and system considering a camera pitch angle, and relates to the technical field of vehicle positioning. The method comprises the following steps: obtaining a vehicle track of a moving target in a video to be detected and performing coordinate conversion; positioning correction is conducted on the vehicle track through an error correction method, final vehicle positioning is obtained, and the positioning correction process comprises the steps that the camera height and the camera pitch angle are obtained, the relation among the camera height, the camera pitch angle and the coordinate conversion error is constructed, and the coordinate conversion error is calculated; and calculating the actual position of the vehicle target based on the coordinate conversion error to obtain the coordinates of vehicle positioning. According to the invention, the theoretical relationship between the positioning error and the installation height and angle of the camera is deduced by using the imaging principle of the optical lens of the camera and the projection geometrical relationship, so that accurate error correction is carried out, and high-precision positioning of the moving target is further realized.

The invention discloses a meter-wave radar low-elevation-angle multipath-removing high-precision angle measurement method based on a characteristic game, and relates to the technical field of radar signal processing. The invention provides a meter-wave radar low-elevation-angle multipath-removing high-precision angle measurement method based on a characteristic game, and the method comprises the steps: building a receiving signal model of an antenna array according to an actual position reflection condition; constructing a generative adversarial network model; optimizing the generative adversarial network model based on a feature game and multipath suppression, and enhancing the signal features of target echoes; and based on the enhanced signal, carrying out angle measurement by using a classical positioning estimation algorithm. Therefore, by adopting the meter-wave radar low-elevation-angle multipath-removing high-precision angle measurement method based on the characteristic game, the separation of the target echo signal and the multipath signal can be realized, and the angle measurement precision of the meter-wave radar can be improved under the condition that the signal-to-noise ratio is matched or not completely matched.

The invention discloses a full-automatic high-speed false eyelash paste double-faced adhesive tape card pulling machine and a using method thereof, relates to the field of false eyelash production equipment, and aims to solve the problems that in the prior art, false eyelashes need to be pasted on eyelash cards through double-faced adhesive tapes after being produced, and the production cost is high in the existing false eyelash production process. The traditional mode that eyelash cards are sucked by a manipulator to move to the lower end of a pasting mechanism for double-faced adhesive tape pasting is low in efficiency and poor in precision. A card conveying and recognizing positioning module is fixedly arranged at the upper ends of the two fixing plates and located at the upper end of a scalp belt of the paging conveyor, and a secondary positioning module is fixedly arranged in the middles of the upper ends of the two fixing plates and located on one side of the upper end of the conveying belt. A double-faced adhesive tape attaching and cutting module is fixedly arranged on the other sides of the upper ends of the two fixing plates and located on the other side of the upper end of the conveying belt, and one sides of the two fixing plates are jointly and fixedly connected with a material collecting box.

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 belongs to the technical field of robots, and discloses a quick'eye-on-hand 'hand-eye calibration method for accurate clamping at the tail end of a robot, which is used for independently calibrating two relative relations of rotation and translation of a coordinate system in order to reduce the solving difficulty of a nonlinear optimization problem. The method comprises the following steps: firstly, obtaining a CCS rotation matrix which is the same as an ECS through a three-step rotation calibration process; a translation vector between the CCS and the ECS is then calculated using the coordinate transformation. And finally, the relative relation between the center of a clamping jaw at the tail end of the robot and the binocular camera is calibrated, and real-time, in-place and accurate clamping of visual guidance is achieved. According to the method, high-precision positioning of the tail end of the robot for accurate clamping can be achieved, after calibration is completed, the center of a clamping jaw at the tail end of the robot can be accurately guided to any space target point in real time through a binocular camera, and extra LT guiding is not needed.

The invention discloses an engineering machinery carrier positioning method based on visual identification and related equipment, which can well solve the problem of positioning precision of remote control engineering machinery, can realize high-precision positioning of an engineering machinery carrier, and avoids influence on operation safety. The method comprises the following steps: acquiring an image set shot by an unmanned aerial vehicle, wherein the image set comprises at least one image of an engineering operation site; using a convolutional neural network model to judge whether the images in the image set contain a target object, wherein the target object is an engineering machinery carrier in the engineering operation site; if yes, generating a bounding box at a target object of the image; extracting pixel coordinates of the target object according to the bounding box; according to the pixel coordinates, the position of the unmanned aerial vehicle and parameters of the camera on the unmanned aerial vehicle, the distance between the camera on the unmanned aerial vehicle and the target object and the sight angle between the camera on the unmanned aerial vehicle and the target object are calculated.

The utility model provides an automatic material belt pulling device which comprises a first motor, a second motor and a material belt, the output end of the first motor and the output end of the second motor are each fixedly provided with a gear motor, a support is fixedly installed on each gear motor, and a power shaft is fixedly installed at the output end of each gear motor; the other end of the power shaft penetrates out of the support, the power shaft is rotationally connected with the support through a bearing, and a material pulling wheel is fixedly installed at the other end of the power shaft. A base is fixedly installed on the front side of the bottom of the support, and a movable block is slidably installed on the base through a countersunk head guide column. The material belt is located between the movable block and the material pulling wheel. Through the integral arrangement, the material belt can be automatically positioned and moved in the mold, the injection molding process is reduced, the labor cost can be effectively saved by matching a punching device after a product is punched out, the waste rate of the material belt is reduced, and the production efficiency of the product can be ensured.

The utility model provides a welding tool and system, and relates to the technical field of welding. The welding tool comprises a tool body and at least one pressing assembly, the tool body comprises a containing groove and a first supporting piece, the containing groove is used for containing a metal frame, the first supporting piece extends in the first direction and is arranged below the containing groove in the longitudinal direction, and the first supporting piece is used for supporting the metal frame; the first supporting piece comprises a plurality of first positioning grooves, the first positioning grooves are evenly formed in the top side of the first supporting piece in the first direction, each first positioning groove extends in the second direction and penetrates through the first supporting piece, and the width size of each first positioning groove in the first direction is matched with the diameter size of the metal round bar; the at least one pressing assembly is arranged on one side of the placing groove in the first direction and / or the second direction, the pressing assembly comprises a limiting piece, and at least part of the limiting piece extends to the position above the placing groove and is used for limiting the longitudinal displacement of the metal frame.

The invention discloses an AFM target point positioning trajectory planning system and method based on deep learning, and relates to the technical field of nanometer manipulation.The AFM target point positioning trajectory planning system based on deep learning comprises the steps that a sample morphology image is obtained through an AFM scanning module, a sample area is determined through processing of an image segmentation module, and a target point positioning trajectory is obtained; the path planning module generates an original path, then the deep learning model module predicts a positioning track, the track comparison module compares differences, then the positioning control module realizes accurate positioning, and finally the mechanical detection module detects mechanical data of a target point.

The invention discloses a non-cooperative moving target positioning method based on a multi-base positioning system. The method comprises the following steps: modeling the multi-base positioning system; dTD measurement information, DTD-rate measurement information and TDOA measurement information are extracted; dTD, DTD-rate and TDOA (time difference of arrival) measurement models are constructed; a TDOA measurement model is preprocessed by adopting a step-by-step estimation method, a generalized trust domain sub-problem is constructed, # imgabs0 # is solved, a DTD measurement model and a DTD-rate measurement model are preprocessed by adopting the step-by-step estimation method, a constrained weighted least square problem is constructed, the constrained weighted least square problem is relaxed into a convex positive semidefinite programming problem by utilizing a positive semidefinite relaxation method, and the convex positive semidefinite programming problem is solved. A CVX toolbox of Matlab is adopted to solve # imgabs1 # and # imgabs2 # for a positive semidefinite programming problem, or a joint estimation method is adopted to pre-process a DTD measurement model, a DTD-rate measurement model and a TDOA measurement model, a constrained weighted least square problem is constructed, a positive semidefinite relaxation method is utilized to relax the constrained weighted least square problem into a convex positive semidefinite programming problem, and the positive semidefinite programming problem is obtained. Solving # imgabs3 # for positive semidefinite programming problem by using CVX toolbox of Matlab

The utility model discloses an active pressure working claw which comprises a fixing disc, a lead screw motor is arranged on one end face of the fixing disc, a fixing sleeve is coaxially arranged on the other end face of the fixing disc, a high-speed motor is arranged at the end of the fixing sleeve, the high-speed motor is connected with a working disc, and at least three push rods are evenly hinged to the edge of the fixing disc. A sucker is hinged to the end of the push rod; an output shaft of the lead screw motor is connected with a lead screw extending into the fixing sleeve, the outer wall of the fixing sleeve is movably sleeved with a sliding ring, the sliding ring is connected with the push rod through a connecting rod, the lead screw is connected with the sliding ring through a lead screw nut base, and the lead screw motor drives the lead screw to rotate and drives the lead screw nut base to ascend and descend. The lead screw nut seat drives the three push rods to swing synchronously through the sliding rings and the connecting rods. The working disc positioning device can adapt to different working scenes, high-precision positioning of the working disc is achieved, pressure needed during construction can be actively provided for a working face, and rust removal, grinding, drilling and other operations can be completed.

The invention provides a driving planning method for a high-speed movement mechanism, which comprises the following steps of: planning a first driving stage and a second driving stage which are continuous from the maximum overshoot of inertial vibration and vibration duration; the first driving stage is a high-speed and high-acceleration motion driving stage; and the second driving stage is a dynamic low-speed and low-acceleration S-shaped curve driving stage. Rapid movement is still achieved in the first driving stage, and high efficiency of the movement process is guaranteed; by setting a certain gap, overshoot and continuous oscillation of a positioning target caused by high-speed large-inertia motion are avoided, and the positioning target is prevented from being impacted or damaged by a motion mechanism; according to the method, the positioning target is reached through the second driving stage, overshoot and inertial oscillation at the final target can be avoided, it can be guaranteed that the influence of high-speed motion inertial impact on the positioning precision is avoided, high-precision positioning is achieved, the whole positioning operation time is not prolonged, and high efficiency of the whole operation is guaranteed.

The invention relates to the technical field of submerged dike construction, in particular to a fine placement construction process for an accropode group under large water depth. The construction method comprises the following steps: S1, construction preparation: prefabricating an accropode group, and transporting the accropode group to a construction site; s2, underwater measurement and positioning: measuring the underwater topography to obtain underwater topography data, and arranging a positioning system; s3, hoisting: performing real-time monitoring and position adjustment by using an underwater visual monitoring system, and accurately sinking the accropode group to a preset position; s4, checking after sinking: collecting sinking data of the accropode group, and carrying out quality checking; s5, adjusting the sinking position: correcting the position according to the inspection result to ensure the stability of the accropode; according to the technology, by comprehensively applying high-precision positioning, real-time monitoring and intelligent adjusting technologies, the hoisting precision and construction efficiency of the accropode group in the large water depth environment are remarkably improved, and the quality problem caused by position deviation is effectively solved.

The invention provides a multi-array sound source localization method based on a particle swarm optimization algorithm. The method comprises the following steps: calculating and obtaining estimated sound source coordinate parameters of a real sound source under each single microphone array; constructing a positioning direction line between the estimated sound source coordinate parameter of each single microphone array and the corresponding reference array element; constructing an optimal target function of the sum of the distances from the optimal sound source point to each positioning direction line after the positioning data of each single microphone array is fused; after the optimal target function of the single microphone array is solved and a sound source position calculation result of the single microphone array is obtained, performing iterative search on a plurality of sound source position parameters of the multi-array microphone array through a particle swarm optimization algorithm until an iteration stop condition is met; and outputting and taking the optimal position parameter as a positioning parameter of a real sound source. According to the invention, the problem of positioning failure of the single microphone array is effectively solved, and the positioning precision of the single microphone array is improved.

The invention discloses an indoor and outdoor cooperative positioning method, which relates to the technical field of high-precision positioning and is used for solving the problem of inaccurate positioning of an existing buffer area, and the method comprises the following steps: obtaining positioning data of Bluetooth positioning and Beidou positioning; performing unified processing on the positioning data to enable different positioning data to follow the same data standard; performing feature extraction on the positioning data after the unified processing to obtain feature data; according to the feature data, training through a BP neural network to obtain a positioning fusion model; and positioning the buffer area according to the positioning fusion model. The invention further discloses an indoor and outdoor cooperative positioning device, electronic equipment and a computer storage medium. According to the invention, positioning fusion is carried out through the BP network, so that the buffer area is accurately positioned.

The invention discloses a linear rotation device for photoetching equipment, which comprises a mask plate moving table for bearing a mask plate, and the mask plate moving table can rotate; the linear motion module is used for driving the mask plate motion table to rotate through linear motion, and the linear motion module comprises a thrust bearing; the adapting piece is arranged on the mask plate moving table, and the thrust bearing is tightly attached to one face of the adapting piece in the rotating movement process of the mask plate moving table; the angle detection unit is used for detecting the angle difference between the actual position and the target position of the mask plate; and the control unit is used for adjusting the moving distance of the linear motion module according to the angle difference between the actual position and the target position of the mask plate so as to enable the angle difference to meet the preset precision requirement. The invention also discloses a method for controlling the rotary motion of the mask plate motion table by using the linear rotary device.

The invention relates to the technical field of non-standard automation, in particular to an automatic closestool assembling and stacking line which comprises a base assembling and conveying line, a base assembling mechanism, a transfer conveying line, a ribbon fixing mechanism, a packaging and positioning mechanism, a material taking mechanical arm, a material taking mechanism, a stacking and supporting mechanism and a stacking and film wrapping mechanism which are sequentially arranged. A manual assembling position is arranged on one side of the base assembling conveying line and used for manually assembling toilet bases. The seat body assembling mechanism is used for assembling a toilet seat and a toilet base; the transfer conveying line is used for loading an assembled toilet body into a packaging upper cover box packaging base; through seamless butt joint of continuous operation units such as the base assembly conveying line, the base body assembly mechanism and the transfer conveying line, high automation of the whole production process is achieved, manual intervention is greatly reduced, and therefore the production efficiency is remarkably improved.

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.

This utility model provides an eccentric machining clamping fixture, including a disc; the disc has a central hole; it also includes a positioning seat, a correction component, a left limit stop, and a gripper assembly; the positioning seat is fixed on the right side of the disc; the positioning seat has a positioning hole at its center for positioning the workpiece; the positioning seat has a correction component mounting groove below the positioning hole; the correction component includes a slide, a correction slider, a spring, and an adjusting shaft; the slide is fixed at the position of the correction component mounting groove; the correction slider is slidably connected to the slide within the slide; the upper end of the correction slider has a correction protrusion extending into the positioning hole; the spring is installed between the slide and the correction slider to apply upward elastic force to the correction slider; the adjusting shaft is installed on the positioning seat and its end is connected to the correction slider to control the downward movement of the correction slider; the left limit stop is located on the left side of the positioning hole and its two ends are fixed on the positioning seat; the gripper assembly is installed on the upper part of the positioning seat to clamp and fix the workpiece in the mounting hole.

This utility model provides a pneumatic lifting device for electronic trays, including a tray positioning assembly, a drive assembly, and a handling robot. The tray positioning assembly inserts a central positioning cone into the center hole of the tray, and, in conjunction with a pressure plate, clamps the tray to achieve precise vertical positioning. The drive assembly uses a downward-pressing cylinder to drive the limit plate to rise and fall, with linear bearings ensuring stability. The handling robot uses a rotary cylinder, a gripper cylinder, and a synchronous belt mechanism to achieve 45-degree rotation and extend / retract the fork, completing the tray gripping and handling. This device has a compact structure, high positioning accuracy, and strong adaptability, significantly improving the efficiency and stability of automated production, and is suitable for various electronic trays.

The present application discloses a contact lens. The contact lens comprises a lens body and an embedded module. The lens body comprises an optical part and a ring-shaped wearing part surrounding the optical part. The embedded module is embedded in the ring-shaped wearing part, and the embedded module comprises a front support ring, a rear support ring and a circuit structure clamped between the front support ring and the rear support ring. The front support ring and the rear support ring are both made of ophthalmic materials and surround the outside of the optical part. A front curve of the front support ring is flush with the front surface of the lens body. A rear curve of the rear support ring is flush with the rear surface of the lens body, so that they are collectively suitable for wearing on an eye. Accordingly, the high-precision positioning of the circuit structure can be realized during the production process of the contact lens, so that the contact lens has high consistency during mass production.

The utility model discloses an auxiliary chamfering mechanism of an edge grinding machine. The auxiliary chamfering mechanism comprises a base; the X-axis motor is mounted on the base and is connected with the lathe head through a screw rod; the lathe head is installed on the base through a guide rail sliding block and can move in the X direction along a guide rail; the left shaft is mounted in a left shaft hole of the lathe head, and the left chuck is mounted at the shaft end of the left shaft; the right shaft is mounted in a right shaft hole of the lathe head, and the right chuck is mounted at the shaft end of the right shaft; the grinding wheel is mounted on the base and can move back and forth; the displacement sensor is mounted on the headstock; the stop block is mounted on the right shaft; the mounting seat is mounted on the stop block; the handle mechanism is installed on the lathe head and used for controlling the right shaft to slide along the shaft hole. The position of the right shaft clamping the product is detected in real time through the displacement sensor, so that the change of the thickness of the product is detected, compensation is carried out in the control system, and the problem of inconsistent chamfers caused by the thickness error of the product is solved.

The invention discloses a metal pipe fitting assembling and laser marking device, relates to the technical field of laser marking, and aims to solve the technical problem that the metal pipe fitting laser marking efficiency is low. Metal pipe fittings are carried to the rotary assembling and marking integrated mechanism on the rotary bearing table through the first grabbing mechanism, firstly, the two metal pipe fittings are subjected to rotary thread assembling through the rotary assembling and marking integrated mechanism, and then the assembled metal pipe fittings are rotated to the position under the laser marking mechanism through the rotary bearing table to be subjected to laser marking; according to the metal pipe fitting assembling and marking device, the assembling function and the marking function are integrated on a production line of the same equipment, the frequency of material transferring is reduced, the production period is shortened, and the machining efficiency of the metal pipe fitting is improved.

The utility model discloses a novel light guide plate with uniform light distribution relates to novel light guide plate technical field, this novel light guide plate with uniform light distribution includes novel light guide plate, and the novel light guide plate four corners are all connected with fixed clamp seat, the utility model discloses, light guide plate adopts gradual change compound dot, and the design of circular dot and rhombus dot is combined with the layout of optical simulation optimization, and the optimization surface light intensity solves the problem of uneven light emission from the light conduction source, and the nanometer diffusion film cooperates with the micro prism brightening layer, and the light is regulated by secondary scattering and total reflection, and the light emission uniformity is improved 40% than traditional light guide plate, and effectively eliminates bright spot, dark area, and adapts high -end display, precision lighting scene.

The invention discloses a frequency converter, a ground short circuit detection method of an IT system and a storage medium. The ground short circuit detection method comprises the following steps: acquiring a bus voltage and a maximum change value of a ground voltage of a first-phase motor winding in a first time period; and determining the phase motor winding with the short circuit to ground according to the multiple relationship between the maximum change value and the bus voltage. According to the technical scheme, by introducing a low-cost signal acquisition and processing technology and combining existing acquisition signals of the frequency converter, high-precision positioning of grounding short circuit of a certain phase of the three-phase motor is achieved, strong electromagnetic interference generated by continuous operation is remarkably reduced through accurate fault positioning, the insulation pressure in the frequency converter is effectively reduced, and the service life of the frequency converter is prolonged. Therefore, the reliability and the stability of the system are improved.

The embodiment of the invention provides a quantum dot information encryption access method and device, computing equipment and a storage medium, and belongs to the technical field of optical storage, and the method comprises the following steps: carrying out an exposure experiment on a quantum dot photoresist storage layer through a direct-writing photoetching system to obtain a relation curve of exposure parameters and excitation light intensity; multiplying and accumulating the original data matrix corresponding to the to-be-stored information and a group of random key matrixes to obtain encrypted data; according to the relation curve, recording the encrypted data on the quantum dot photoresist storage layer through a direct writing photoetching system; quantum dot excitation is carried out on the storage layer after data recording is completed, the excitation light intensity is detected, and an excitation light intensity vector is obtained; and performing second-order association reconstruction operation on the excitation light intensity vector and the random key matrix to recover original data. According to the scheme, efficient and high-precision encrypted storage and reading of data can be realized, and high-precision data positioning is realized.