45results about How to "Resist interference" patented technology

The application discloses a water body extraction method based on combined water body index frequency, comprising the following steps: S1, acquiring remote sensing image data and pre-processing the remote sensing image data; S2, constructing a water body index and constructing an instantaneous water body extraction decision tree model according to the water body index; S3, performing instantaneous water body pixel recognition and extraction according to the instantaneous water body extraction decision tree model, discriminating the water body and preliminarily determining the average water body; S4, extracting the water edge line by using a Canny edge detection method, and determining the average water body extraction result according to the output water body pixel value, the edge detection and the boundary elimination result. The application can realize average water body extraction based on dense long-time sequence images, improve the water body extraction precision, improve the effectiveness of water body extraction in the building shadow and terrain shadow noise environment, resist the interference of the cirrus cloud noise in the single image, and make the large-scale and long-time sequence water body extraction more universal.

An anti-fuse memory cell, an anti-fuse memory array and a memory, the anti-fuse memory cell comprising: an anti-fuse structure having a first end and a second end; the selection transistor comprises a drain electrode and a source electrode, and one of the drain electrode and the source electrode is coupled with the first end of the anti-fuse structure; and the anode of the voltage stabilizing diode is coupled with the other one of the drain electrode and the source electrode. According to the embodiment of the invention, the voltage stabilizing diode is additionally arranged in the anti-fuse memory cell and is connected with the selection transistor in series, the voltage stabilizing diode can provide stable voltage for the selection transistor, interference caused by current fluctuation can be resisted, correspondingly, the selection transistor can provide stable current for the anti-fuse structure, and the anti-fuse memory cell is more stable in performance. Therefore, the programming reliability of the anti-fuse structure is improved.

This invention provides an adjustable-bend hemostatic delivery sheath for interventional treatment of the aortic arch, comprising a catheter sheath and a control mechanism. The control mechanism includes a base, a drive assembly, and a locking assembly. The drive assembly includes a drive ring rotatably mounted on the base and a transmission slider threadedly engaged with the drive ring. The transmission slider is fixedly connected to the proximal end of the adjusting wire and is restricted from axial sliding relative to the base. The locking assembly is disposed between the base and the connecting portion. The locking assembly includes a clamping block sleeved on the adjusting wire and a sliding ring axially slidably sleeved on the clamping block. The circumferential friction generated by the sliding ring squeezing multiple elastic clamping arms can reliably lock the adjusting wire.

The present application relates to the technical field of acoustic logging, and particularly relates to a high-stability wide-frequency distributed optical fiber acoustic wave sensing logging method and system. The method comprises the following steps: acquiring logging requirements and downhole geological structure characteristic data, simultaneously collecting corresponding acoustic wave signals, temperature field distribution signals and wellbore structure stress signals, and performing preliminary denoising and synchronization processing and wide-frequency expansion and distortion compensation processing, to generate downhole wide-frequency enhanced acoustic wave signals; based on the downhole wide-frequency enhanced acoustic wave signals, performing downhole propagation stability evaluation and stable adaptive optimization adjustment, to generate corresponding high-stability wide-frequency acoustic wave sensing signals; based on the high-stability wide-frequency acoustic wave sensing signals, performing distributed optical fiber acoustic wave sensing logging analysis, to generate corresponding geological structure and reservoir characteristic logging information. The present application can solve the problems of bandwidth limitation, signal distortion and poor stability of traditional optical fiber acoustic logging in a complex downhole environment, so as to realize high-precision detection of oil and gas reservoirs.

This invention discloses a method for locating the sub-pixel intersection point of two straight lines based on robust estimation and local refinement, comprising the following steps: S10, defining the Region of Interest (ROI) and extracting sub-pixel edges at multiple scales; S20, initial fitting of the straight lines based on robust estimation; S30, refining the intersection region and assessing uncertainty. This invention achieves intersection point location accuracy superior to the pixel level; significantly reduces the impact of abnormal edge points, missing local edges, and interference near the intersection point on the location results; has a high degree of automation, reducing reliance on manual parameter adjustments; and can output the intersection point coordinates while providing an estimate of its location uncertainty, providing a decision-making basis for downstream applications.

This invention discloses a method, system, and device for identifying the working state of forging operations, relating to the field of industrial automation technology. The method includes: S1 acquiring multi-view images of the working area; S2 detecting core production components and auxiliary operation-related objects using a YOLOv11 target detection model; S3 generating multi-dimensional instantaneous state codes and mapping them to basic states; S4 constructing a state time series and analyzing the macroscopic working state using a hierarchical state machine; and S5 outputting state and statistical information. This invention supplements the YOLOv11 loss function, instantaneous state encoding, and state transition algorithm formulas, solving the problems of incomplete state definitions, missing transition state identification, and inability to finely identify auxiliary operations in existing technologies. It achieves accurate and robust identification of the entire forging production process, providing data support for lean production management, with low deployment costs and strong scalability.

The utility model discloses a rice fish comprehensive breed field fish class habitat sheltering device, concretely relates to aquaculture technical field, including sheltering shell, and the both ends of sheltering shell are connected with the habitat shell, and one habitat shell top fixedly connected with sunshading board, and the bottom of another habitat shell is fixedly connected with connecting plate, and the one side of sheltering shell and habitat shell is equipped with the entrance, and the other side of sheltering shell and habitat shell is equipped with the export, and the inside of sheltering shell and two habitat shells are fixedly connected with a plurality of baffle, and the inside of sheltering shell and habitat shell is penetrated with the feeding pipe. The utility model discloses through setting up feeding subassembly and installing mechanism, can combine feeding with oxygen -enrichment, can carry out oxygen -enrichment simultaneously in the feeding process, and sufficient water dissolved oxygen content helps fish to keep active feeding state, and simultaneously through the spiral effect of spiral blade can increase the contact area of field soil, help to keep the good stability of sheltering shell and two habitat shells in the use process.

The invention provides an adjustable bending hemostasis delivery sheath tube for aortic arch interventional therapy, the adjustable bending hemostasis delivery sheath tube comprises a catheter sheath and a control mechanism, the control mechanism comprises a base, a driving assembly and a locking assembly, the driving assembly comprises a driving ring rotatably mounted on the base and a transmission sliding block in threaded fit with the driving ring, and the transmission sliding block is in threaded fit with the driving ring. The transmission sliding block is fixedly connected with the near end of the adjusting wire and limited to axially slide relative to the base. The locking assembly is arranged between the base and the connecting part, the locking assembly comprises a clamping block arranged outside the adjusting wire in a sleeving mode and a sliding ring arranged outside the clamping block in an axially sliding and sleeving mode, and the adjusting wire can be locked extremely reliably through surrounding type friction force generated when the sliding ring extrudes the multiple elastic clamping arms.

The invention discloses a transformer comprehensive loss measurement system and method based on SF6 gas insulation and multi-range integration, and the system comprises a three-phase independent high-voltage measurement unit, a data collection unit, an AD conversion module, a signal preprocessing unit, a calculation module, a data caching unit, a communication interface, a data uploading and display unit, and a control host. The method comprises the following steps: firstly, collecting signals, then carrying out AD conversion, then carrying out harmonic filtering, and then carrying out a calculation process; then storing the data; and then the stored data is transmitted to the control host, and then real-time waveform display and report output are performed, so that the contradiction between wide range and high precision is fundamentally solved, field interference and overvoltage impact can be effectively resisted, and the test efficiency and the automation level are greatly improved. And the safety risk caused by manual operation in a high-voltage area is avoided.

The application provides a simulation running time prediction method and system, a storage medium and a program product, and relates to the technical field of model training. The original running time is logarithmically transformed to compress the time data into a smooth numerical space that is easier for model learning. Data cleaning provides a clean and representative data basis for model training. Standardization processing avoids interference of different parameter dimension differences on model weight learning. The convolutional neural network model has local perception ability and can automatically capture and learn deep patterns of strongly coupled parameter combinations from the standardized feature vector. Finally, the introduction of the Huber loss function ensures that the model can accurately fit normal samples and resist the interference of residual noise during the training process, and finally obtains a highly robust and generalizable prediction model.

The utility model discloses a waterproof wire harness connector assembly, which comprises a plurality of wire bodies, waterproof assemblies are arranged on the wire bodies, each waterproof assembly comprises a connecting plug, a connecting plug block, a driving sleeve, a driven sleeve and a rubber block, the connecting plug is connected to one wire body, the connecting plug block is connected to the other wire body, the driving sleeve is connected to the other wire body, and the driven sleeve is connected to the other wire body. The inserting block is matched with the inserting head, the driving sleeve and the driven sleeve are connected to the line body in a sliding mode, the rubber block is arranged at the joint of the line body, the driving sleeve and the driven sleeve, a fixing assembly is arranged on the line body and comprises a fixing plate, a fixing base and an upper clamping plate, the fixing plate is arranged at one end of the line body, and the fixing base is arranged at the other end of the line body. The fixing base is fixedly installed on the fixing plate, and the upper clamping plate is arranged on the fixing base, so that the technical problem that the waterproof effect cannot be flexibly adjusted or optimized according to actual requirements due to the fact that many existing wire harness connectors mentioned in the background technology are designed to be fixed is solved.

The utility model relates to the field of joints, in particular to a detachable and replaceable two-joint joint, which comprises a plug main body, a cable and a wall bushing, two groups of plug main bodies are transversely arranged, a wall bushing is arranged between the two groups of plug main bodies, and cables are arranged between the wall bushing and the plug main bodies; according to the utility model, by replacing the common nut on the plug main body, after the plug main body is inserted into a socket, current or signals are conducted from the socket to the cable connected with the plug main body through the plug main body and then are transmitted to equipment or a system needing power supply or signal receiving through the cable, and in the process, the wall bushing ensures the safety and the stability of the cable; according to the detachable plug, the cable is prevented from being damaged by external factors, normal operation of a whole circuit system is guaranteed, connectors of different materials, specifications or functions can be replaced through the detachable plug body according to different working environments, medium transmission requirements or equipment connection requirements, meanwhile, timely cleaning is facilitated, transmission efficiency is maintained, and the service life of equipment is prolonged.

The utility model discloses a pipeline argon filling welding protection device which comprises two protection units. The protection unit comprises a ventilation pipe, a guide ring arranged at one end of the ventilation pipe and a positioning frame arranged at the other end of the ventilation pipe. An elastic sealing ring is arranged on the periphery of the guide ring; an annular groove is formed in the outer wall of the guide ring; the elastic sealing ring is connected in the annular groove in a sliding manner; the guide ring is provided with a first joint; three adjusting screws are arranged on the periphery of the positioning frame; and the adjusting screw is in threaded connection with the positioning frame. An argon protection cavity is formed in the position between the two welding pipes, operation is easy and convenient, and the welding quality and efficiency can be improved; the protection device is firmly fixed on the pipe wall by adjusting the screw, so that the protection device is prevented from loosening and displacing; and meanwhile, the guide ring provides guiding and supporting effects for the elastic sealing ring, the sealing effect between the elastic sealing ring and the pipe wall is improved, and the service life of the elastic sealing ring is prolonged.

The application relates to a gas stove and a burner thereof. The burner comprises an ejector pipe group and a damper end plate. The ejector pipe group has an air inlet end and an air outlet end, and a booster hole is arranged in the side wall of the ejector pipe group close to the air inlet end; the damper end plate is arranged at the air inlet end of the ejector pipe group, and a primary air inlet hole and a gas hole are arranged in the damper end plate. External air can be sucked into the ejector pipe group through the booster hole and the primary air inlet hole at the same time, the booster hole is used for increasing the air intake amount, facilitating further promotion of combustion, improving the combustion efficiency and reducing the CO emission amount. The booster hole is arranged in the side wall of the ejector pipe group close to the air inlet end, and the primary air inlet hole is arranged on the damper end plate, that is, the air flow direction of the air entering from the booster hole is different from the air flow direction of the air entering from the primary air inlet hole. Therefore, when the two air flows flow into the ejector pipe group at the same time, the two air flows collide and mix, the air and the gas are fully mixed, the combustion efficiency is improved, and the CO emission amount is reduced.

The invention relates to the technical field of antennas, in particular to a satellite-borne phased-array antenna, a satellite, a low-orbit satellite system and a layout method. The satellite-borne phased-array antenna comprises at least one antenna array, each antenna array comprises a plurality of array element antennas, and the array element antennas are used for scanning a target angle range according to a target bandwidth frequency in a frequency band system; wherein the rotation angle of each array element antenna in the antenna array is an integral multiple of a specified rotation degree, and the rotation angles of all the array element antennas are not completely the same, so that non-periodic polarization and phase disturbance are performed on the surface current and the electric field of the array element antenna and the surface current and the electric field of other array element antennas; according to the satellite-borne phased-array antenna, the problem of rapid lifting due to far-zone sidelobes and cross polarization of a diagonal azimuth tangent plane of the antenna array can be avoided, so that the satellite-borne phased-array antenna can better resist interference, the survivability and the adaptive capacity in a complex environment are improved, and the overall performance of the satellite-borne phased-array antenna is improved.

This utility model discloses an inflatable wind turbine transport anti-collision airbag structure, including a transfer frame, a clamping airbag mechanism, a position fixing mechanism, and a stabilizing mechanism. The clamping airbag mechanism includes a longitudinal plate and a mounting plate. The position fixing mechanism includes a clamping tube and a clamping rod. The stabilizing mechanism includes a threaded ring and a clamping ring. Through the cooperation of the longitudinal plate, the mounting plate, and the guide rod, the airbag assembly can slide laterally and adjust its position, achieving flexible clamping and buffering of the wind turbine equipment. It can adapt to equipment of different sizes and shapes, effectively reduce the impact force during transportation, and protect the equipment. Through the meshing and limiting structures such as the clamping tube, clamping rod, internal toothed ring, embedded teeth, and connecting teeth, combined with the cooperation of the rotating plate, positioning spring, and positioning hole, the position of the airbag assembly is accurately locked, preventing loosening and displacement during transportation and improving reliability.

This invention discloses a water-land image segmentation method based on local standard deviation texture features, comprising: first, preprocessing the input waterfront image to reduce noise and computational load; second, quantizing texture features using local standard deviation to distinguish between textured real land and smooth water surfaces; third, generating candidate water surface masks using an adaptive Otsu threshold, and combining morphological operations to remove noise and fill holes; finally, statistically analyzing the percentage of water surface pixels row by row to locate the land-water boundary and outputting a high-precision water surface segmentation result. This invention uses local standard deviation as a measure of texture complexity to solve the problem of misjudgment of water reflections, and combines the percentage of water surface pixels to locate the land-water boundary. It features unsupervised operation, strong robustness, and accurate boundaries, and is suitable for strong reflections and complex shoreline scenes such as rivers and lakes, providing reliable technical support for water environment monitoring and unmanned vessel navigation.

The utility model relates to the technical field of SAW (Surface Acoustic Wave) filters, in particular to a piezoelectric wafer for an SAW filter, which comprises a substrate, a plurality of grooves are arranged on the back of the substrate, the grooves are arranged in parallel, the grooves extend along the chordwise direction of the substrate, and metal strips are filled in the grooves. The piezoelectric wafer for the SAW filter provided by the utility model is simple in structural design, the resistivity of the wafer is obviously reduced, and the external electromagnetic field interference resistance, the heat dissipation capability and the conductivity are greatly improved.

The invention discloses a satellite mobile communication system multi-broadcast frequency point parallel search method and device, and the method comprises the steps: obtaining a satellite digital intermediate frequency signal containing a plurality of target frequency bands, carrying out the digital down-conversion processing of the intermediate frequency signal through employing multiple channels, obtaining a baseband signal corresponding to each target frequency band, and transmitting the baseband signal to a receiver; performing cross-correlation operation on the baseband signal after downsampling and filtering processing and a local broadcast signal; and performing frequency domain transformation on a cross-correlation operation result, determining the maximum amplitude and the signal-to-noise ratio in the frequency domain data of each channel, screening the effectiveness of each channel according to the signal-to-noise ratio, and determining the position of the satellite by taking the beam direction corresponding to the maximum amplitude in the effective channel as the incoming wave direction of the broadcast signal. The real-time performance of signal searching in the multi-frequency-point environment is improved, the high signal detection capacity and anti-interference performance are shown in the complex electromagnetic environment, and the method has the advantages of being small in resource consumption, high in operation speed, stable in searching result and good in universality.

The utility model relates to technical field of semiconductor growth furnace, and disclose a kind of semiconductor growth furnace quartz tube mounting structure, including the first quartz tube for constituting semiconductor growth furnace, first quartz tube side is equipped with second quartz tube;First quartz tube bottom is connected with furnace chamber;Connecting assembly is equipped between first quartz tube and second quartz tube, and connecting assembly is used to provide orientation when first quartz tube and second quartz tube are installed;In installation process, due to the cooperation of guide rod and sliding slot, second quartz tube can be accurately sleeved outside first quartz tube, so that first quartz tube and second quartz tube can be in concentric state, and installation personnel need not additionally adjust concentric position, greatly facilitate the installation work of first quartz tube and second quartz tube, first quartz tube and second quartz tube only need one operator when installing, and can be efficiently completed, greatly save manpower cost.

This invention discloses a quantum optical path adaptive alignment compensation mechanism, relating to the field of optical instrument technology. It includes a light source mounted on a coarse adjustment device, with a light guide chamber installed at the light-emitting end of the light source. A pitch optical path adjustment component is rotatably mounted in the light guide chamber, comprising a reflector and a rotating mechanism, with both ends of the reflector respectively mounted to the rotating mechanism. A horizontal optical path adjustment component is rotatably mounted in a guide chamber, comprising a dimming component and a driving mechanism, with the end of the dimming component fixedly mounted to the driving end of the driving mechanism. The pitch optical path adjustment component within the light guide chamber enables a 90° turn and pitch angle adjustment of the quantum optical path. Then, the horizontal optical path adjustment component within the guide chamber performs a secondary fine adjustment of the turned horizontal beam. Utilizing the refraction principle of parallel glass plates, it can accurately correct minute angular deviations generated during the optical path turning process.

The invention relates to the technical field of fluorescent nano sensors, in particular to a synthesis method of a fluorescent nano sensor for monitoring the content of ferric ions in sewage. The method comprises the following steps: 1, carrying out anhydrous and anaerobic treatment on a reactor, cooling to room temperature, adding an F127 or P123 solution into the reactor, and adding 10-ethyl-3, 7-diformaldehyde phenothiazine under a stirring condition to synthesize fluorescein isothiocyanate with the concentration of (1-9) * 10 <-4 > mol / L; and 2, adding ethanol into fluorescein isothiocyanate, fully stirring, adding tetraethoxysilane, reacting, adding a terminator, continuously stirring, filtering by using a water-based filter membrane, and dialyzing by using deionized water until particles are neutral, thereby obtaining the fluorescent nano sensor. The size of the synthesized fluorescent nano sensor is lower than 20 nm, the water compatibility is good, the luminous intensity in water is high, the online detection capability is achieved, the detection method is visual and effective, and the method can be suitable for chemical sewage and domestic sewage.

The invention discloses a runoff annual distribution mode clustering method based on threshold guidance and average connection, and aims to solve the problems that an existing clustering method needs to manually preset parameters, is sensitive to abnormal values and is not suitable for runoff percentage data, and the method comprises the following steps: converting daily runoff data into monthly / ten-day runoff percentage to construct a sample matrix; detecting and removing abnormal values by adopting a mahalanobis distance; a distance threshold is calculated adaptively, and automatic cluster allocation of samples is realized in combination with an average connection criterion without presetting the number of clusters; and outputting a clustering label, a cluster center and a clustering quality index, and supporting dimension reduction visualization. Through adaptive threshold and cluster number determination, targeted abnormal value processing and percentage data adaptive design, the method has the advantages of high automation degree, strong robustness and high precision, can be directly applied to hydraulic engineering scheduling, water resource configuration and ecological flow management and control, and provides reliable technical support for runoff time distribution characteristic analysis.

The utility model discloses an environmental hydrogeological survey detection device comprising a rain gauge body, the bottom of the rain gauge body is fixedly connected with an installation cylinder, the middle of the top of the inner side of the installation cylinder is fixedly connected with a square rod, the bottom of the square rod is fixedly connected with a protruding block, and the square rod is slidably sleeved with a circular sleeve block. A square hole matched with the square rod is formed in the middle of the round sleeve block, three pairs of side plates are fixedly connected to the outer surface of the circumference of the round sleeve block at equal intervals, the tops and the bottoms of the two side plates at the same position are rotationally connected with the same connecting rod, the bottoms of the two connecting rods at the same position are rotationally connected with the same arc-shaped plate, and the bottom of each arc-shaped plate is fixedly connected with an inserting nail. Three notches are formed in the bottom of the mounting cylinder at equal intervals, and the arc-shaped plates can be collected in the notches. According to the utility model, interference such as wind power and external force collision can be effectively resisted, it is ensured that the rain gauge can still work stably in a severe environment, the operation difficulty is reduced, and measurement errors or equipment damage caused by toppling over are avoided.

The invention relates to the technical field of document automatic processing and anti-counterfeiting verification, and discloses a contract signature automatic checking machine and a checking method thereof.The contract signature automatic checking machine comprises a device body, an image acquisition port, an electronic contract input port, a paper outlet and a display screen, and the image acquisition port, the electronic contract input port, the paper outlet and the display screen are arranged on the device body; a main control module is also arranged in the equipment main body; the main control module is respectively in communication connection with the image acquisition port, the electronic contract input port and the display screen; and the main control module is used for executing the following operations: receiving paper contract scanning image data transmitted by the image acquisition port, performing image preprocessing and signature feature extraction on the scanning image data, and comparing the scanning image data with a pre-stored sample. By arranging an image acquisition port and an electronic contract input port and cooperating with a logic judgment unit in the main control module, bimodal compatible processing of a paper contract and an electronic contract is realized.

This utility model relates to the technical field of TPU film production lines, specifically a tension adjustment device for a TPU film production line, comprising: a tensioning assembly, which includes a frame; and an adjustment assembly, located on the top of one side of the frame, including a mounting frame, an electric push rod, a connecting plate, and a movable column. The mounting frame is fixed at both ends of one side of the upper surface of the frame, and two sets of mounting frames are provided. The electric push rod is fixed on the other side of the upper surface of any set of mounting frames, the connecting plate is fixed to the output end of the electric push rod, and the movable column is fixed to the upper surface of the connecting plate. It also includes a reinforcement assembly located inside the mounting frame on one side. This utility model features a simple structure and reasonable design. The electric push rod provides rapid vertical adjustment capability, and the ball screw-driven limit column achieves precise locking. The combination of these two features not only ensures micron-level precision in tension adjustment but also increases the device's effective speed by 50%.

The invention relates to the technical field of nanometer materials, in particular to a synthesis method of gold nanoclusters and application of the gold nanoclusters in food pigment detection.The gold nanoclusters are prepared with natural plant protein ginger protease containing sulfydryl and reducing amino acid as an exclusive template through the following steps that an enzyme solution and a chloroauric acid solution are prepared and mixed and stirred in proportion to form colloid; and adding NaOH to adjust the pH so as to unfold the protein structure, carrying out microwave treatment after constant volume and uniform mixing, cooling, and storing in a dark place. The ginger protease is innovatively selected as a template, microwave synthesis is adapted, the synthesis period is shortened, and the product performance is improved; the detection system is high in specificity, good in interference resistance, mild in reaction condition, simple and convenient to operate, suitable for rapid detection of target pigments in various foods, and high in application value.

The invention discloses a point cloud filtering method based on curvature entropy adaptive parameters, and belongs to the technical field of computer vision and three-dimensional data processing. The method comprises the following steps: firstly, for each target point in a point cloud, calculating a curvature representing a local geometrical shape of the target point; secondly, statistical binning is carried out on curvature values of the target point and all points in the neighborhood of the target point, and a discrete local curvature probability distribution histogram is constructed; then, the curvature entropy of the target point is calculated according to the probability distribution; thirdly, establishing a dynamic response model between the filtering parameters and the curvature entropy, and adaptively adjusting each parameter in a filtering weight function by using the calculated curvature entropy; and finally, performing weighted filtering on the target point by adopting the adaptively adjusted filtering parameters to complete filtering processing. According to the method, the curvature entropy based on statistical distribution is introduced to serve as a control variable of geometric features, point-by-point self-adaptive optimization of filtering parameters is achieved, and the protection capacity for fine features in a complex scene and the noise suppression effect are remarkably improved.

The application discloses an integrated composite acid emulsion applied to fracturing fluid and acid liquid and a preparation method thereof, and belongs to the technical field of oil and gas field exploitation. The preparation steps of the emulsion are as follows: S1, organic solvent and composite emulsifier are mixed, stirred, dispersed and uniformly distributed to obtain an oil phase; S2, quaternary ammonium salt unsaturated monomer, sodium benzenesulfonate unsaturated monomer, methacryloyloxyethyl phosphate and a complexing agent are added into water, mixed uniformly and adjusted to have a pH value of 7-9 to obtain an aqueous phase; S3, under the condition of stirring, the aqueous phase is added dropwise into the oil phase to form a water-in-oil emulsion; S4, after nitrogen is passed through the water-in-oil emulsion to remove oxygen, an initiator is added, the temperature is increased to 40-60 DEG C, and stirring reaction is carried out for 4-8 h to obtain the integrated composite acid emulsion. The composite acid emulsion prepared by the inverse emulsion polymerization method has the characteristics of strong thickening, high resistance, high temperature resistance, crosslinking and on-line viscosity change when applied to water and acid liquid, and is an integrated composite acid thickening agent emulsion suitable for fracturing fluid and acid liquid.

The invention provides a single-layer and double-layer character rapid reconstruction method in a license plate recognition process. The method comprises the following steps: firstly, detecting the position, the type and the angular point of a license plate in a vehicle image through a deep learning network model; then affine transformation correction is carried out on the license plate image to eliminate shooting inclination; inputting the corrected image into a character detection network, and obtaining positions, contents and confidence information of all characters at one time; then, dynamically judging whether the license plate is of a single-layer structure or a double-layer structure according to the longitudinal distribution statistical characteristics of the character center points; if the license plate is a double-layer license plate, the license plate is divided into an upper layer and a lower layer according to character longitudinal coordinates, and sequential splicing reconstruction is performed after respective sorting; and if the license plate is a single-layer license plate, directly outputting in sequence. According to the method, detection of all characters is completed through single reasoning, intelligent judgment and reconstruction are carried out by utilizing a character space geometrical relationship, and the problems of repeated calculation, character relevance loss and order disorder caused by image cutting in a traditional method are effectively avoided.