77results about How to "Complete efficiently" patented technology

The application discloses a kind of dynamic partitioning method and system based on data skew model, it is related to big data technology field, including collecting data and pre-processing data, establish data skew evaluation model to predict pre-processed data, according to data characteristics, the data skew degree in job processing process is predicted, determines partition optimization strategy, designs evaluation experiment to compare dynamic partitioning with static partitioning, and repeatedly optimizes dynamic partitioning.This application proposes dynamic partitioning algorithm based on data skew model, which can select suitable partitioning strategy according to the skew degree of the data being processed, use the algorithm of three optimization methods based on Spark dynamic partitioning to process data performance comparison experiment, design and verify the universality and efficiency of the above dynamic partitioning scheme, can make the load balancing of the whole computing cluster, make full use of the computing resources of cluster, more efficiently complete data processing and calculation.

The utility model discloses a tail end protection structure of a steel structure walking stair, and relates to the technical field of stairs. The device comprises a supporting frame, supporting plates are fixedly arranged on the two sides of the top of the supporting frame, the supporting plates are in a broken line shape, and the ends, away from the supporting frame, of the supporting plates make contact with the ground; the guardrail is fixedly arranged at the tops of the supporting plates, and the step plates are arranged between the supporting plates at equal intervals; the U-shaped extension arm is detachably arranged on the lower side of the guardrail, and the U-shaped extension arm is of a bent structure; and the connecting piece is arranged on the lower side of the guardrail. The U-shaped extension arm is arranged at the starting end of the walking stair, extra acting points and supporting points are provided for workers, the problem that the starting end of a traditional stair is lack of protection is effectively solved, the workers can complete material carrying and personnel flow tasks more efficiently due to the fact that the process of going upstairs and downstairs is safer and more convenient, and the working efficiency is improved. And the overall working efficiency is improved.

The utility model relates to the technical field of machining, in particular to a vacuum suction nozzle assembly of a grabbing mechanical arm of a plate feeding machine, which comprises a grabbing mechanical arm for the plate feeding machine, a fixed seat is mounted at the fixed end of the grabbing mechanical arm, and a vacuum negative pressure pump is mounted at the movable end of the grabbing mechanical arm. Through the arrangement of the grabbing mechanical arm, the vacuum suction nozzle assembly can accurately reach the target position to conduct grabbing operation; the vacuum negative pressure pump is installed at the movable end of the grabbing mechanical arm and can generate vacuum negative pressure and provide power for sucking objects, the detachable net cover is installed at the air outlet end, sundries can be prevented from entering the pump, and meanwhile cleaning and maintaining are convenient. The top of the negative-pressure suction nozzle is provided with the internal thread connector which is matched with the external thread pipe in size and is in threaded connection with the external thread pipe, the negative-pressure suction nozzle and the vacuum negative-pressure pump are tightly connected through the connection mode and are convenient to disassemble and replace, the negative-pressure suction nozzle is in a sucker shape and can be better attached to the surface of a sucked object, and the suction stability and reliability are improved.

This utility model relates to the field of irrigation equipment and discloses an irrigation device for seedling planting, including a base. A swing rod is hinged to the top of the outer surface of the base. A sliding block is slidably connected to the inner surface of the swing rod. A column is fixedly connected to the rear part of the outer surface of the sliding block. A rod body is hinged to the top of the outer surface of the base. A groove is formed on the front of the outer surface of the rod body, and the rear part of the outer surface of the rod body is slidably connected to the inner surface of the groove. A threaded rod is rotatably connected to the inner surface of the swing rod. In this utility model, through the cooperation of components such as the knob, threaded rod, threaded sleeve, sliding block, and column, the operator can adjust the position of the sliding block by rotating the knob, thereby adjusting the traction point of the rod body, to flexibly control the swing rate of the nozzle, based on the size of the seedling planting area and the water requirements of the seedlings at different growth stages. This meets the irrigation needs of different planting scenarios.

The utility model discloses a grain depot fumigation tablet autonomous delivery robot which comprises a chassis, damping mechanisms and a medicine delivery mechanism, the damping mechanisms and the medicine delivery mechanism are arranged on the chassis, the damping mechanisms are symmetrically arranged on the left side and the right side of the chassis, and each damping mechanism comprises a support fixed to the left side and the right side of the chassis; the direct-current motor, the driving wheel, the crawler belt, the driven wheel, the connecting shaft and the spring suspension shock absorber are installed on the support, a medicine feeding mechanism is installed at the top of the chassis and comprises a medicine bin fixed to the front end of the top of the chassis, a push plate is installed at the bottom of the medicine bin in a sliding mode, and a medicine pushing rack is fixed to the rear side of the push plate; by arranging driving wheels, ten driven wheels driven by two driving wheels on a crawler belt and a damping system provided with a spring suspension damper, a robot body is reinforced and enlarged, the load capacity is greatly improved, horizontal pushing type medicine feeding is adopted, and compared with a traditional mechanical arm, the method has the advantages that the tablet feeding cost of a robot is reduced, and the design is simple.

The utility model relates to the technical field of detection, and provides a pipeline inner wall defect detection device which comprises a frame used for moving in a pipeline, wheels arranged in a swinging mode relative to the frame, after the wheels are configured to swing, the axes of the wheels are perpendicular to the axis of the pipeline, a detection adjusting frame is arranged on the frame, and the detection adjusting frame is arranged on the frame. The detection adjusting frame comprises a fixing piece which is arranged in a swinging mode, and the detection device is arranged on the fixing piece. By means of the technical scheme, the technical problem that in the prior art, defect detection of the inner wall of a small-pipe-diameter pipeline is inconvenient is solved, and damage detection of the small-pipe-diameter inner wall is achieved.

This utility model provides a roughening device for reinforced concrete pipes, including a base with two sets of limiting plates on the base, two sets of limiting shafts and a housing between the two sets of limiting plates, a bidirectional lead screw shaft assembly inside the housing, multiple sets of support blocks sleeved on the lead screw shaft assembly, the limiting shafts passing through the support blocks, a roller assembly and a concrete pipe on the support blocks, a pressure plate and a sliding plate at one end of the concrete pipe, the sliding plate sleeved on the two sets of limiting shafts, one end of the pressure plate being engaged inside the concrete pipe, a bearing between the pressure plate and the sliding plate, and the pressure plate and sliding plate being rotatably connected; a rotating assembly at the other end of the concrete pipe; a vertical plate and a control module on one side of the housing, and a roughening assembly on the vertical plate. This device roughens the surface of the concrete pipe through the roughening assembly, increasing the surface roughness of the concrete pipe and making subsequent construction bonding more secure; the roller assembly facilitates the rolling and positioning of the concrete pipe, improving operational convenience.

The utility model discloses a kind of pole tear protective film devices, it relates to lithium battery manufacturing and automation equipment technical field. Including fixed frame, servo motor, waste recovery module, sucking pole module and pole tear film positioning module, fixed frame bottom is provided with waste recovery module, waste recovery module upper side is provided with servo motor, waste recovery module upper side is sequentially provided with pole tear film positioning module, sucking pole module. The utility model structure design is reasonable, tear film effect is stable by accurate positioning, and the waste recovery design of convenient and reasonable structure layout makes it can efficiently complete pole tear film task.

The application relates to the technical field of interface measurement, and discloses an electrolytic aluminum electrolyte aluminum liquid interface measurement system based on conductive characteristics, which comprises a data acquisition module that obtains impedance distribution data at different depth positions by controlling a probe to move in a vertical direction and collecting impedance signals; the data acquisition module adopts a multi-frequency excitation mode to obtain impedance responses at different frequencies during the movement of the probe, and adaptively adjusts the movement speed of the sampling probe according to the stability of the collected signals; an impedance change rate is extracted according to the impedance distribution data, the interface is judged based on the impedance change rate, and a candidate interface of the electrolytic aluminum electrolyte aluminum liquid is determined; one candidate interface of the electrolytic aluminum electrolyte aluminum liquid is selected, random multi-point measurement is carried out in the horizontal direction of the candidate interface, measurement information in the horizontal direction of the candidate interface is collected, and an evaluation model is constructed; and the application helps to improve the recognition accuracy of the interface.

This utility model provides a multifunctional U-shaped intelligent rescue boat, comprising multiple hulls, including a main hull 1 and multiple sub-hulls 2. At least one side of the main hull 1 is equipped with a U-shaped connecting frame 24; each sub-hull 2 ​​has a connecting block 25 installed on one side and a U-shaped connecting frame 24 installed on the other side. The inner walls of both the U-shaped connecting frame 24 and the connecting block 25 have mounting holes. Connectors are inserted through these mounting holes between adjacent hulls to achieve a detachable connection between the U-shaped connecting frame 24 and the connecting block 25 of adjacent hulls. A longitudinally connected assembly is provided between the stern and bow of adjacent hulls. This utility model, through its U-shaped structure and design allowing for both lateral and longitudinal connection, enables the rescue boat to adapt to different environments, including harsh rapids and calm waters, improving its versatility and environmental adaptability.

The invention discloses an access control method and device, equipment and a storage medium, and belongs to the technical field of network management and control. The method comprises the following steps: in response to a received access control demand, configuring an XML file based on the access control demand; and an automatic generation engine is adopted to analyze the XML file, and SELinux configuration is generated. According to the method and the device, the error risk and the labor cost caused by manual intervention are reduced while the MAC precision is kept, operation and maintenance personnel can be assisted to efficiently and accurately complete SELinux strategy deployment, the system safety is improved, and the technical problems that in the prior art, after a network management system starts SELinux, the control configuration complexity is high, and operation is prone to errors are solved.

This utility model relates to the field of processing and manufacturing technology, and discloses an AEM hydrogen production test bench assembly, including a test bench body. A cover plate is provided on the top of the test bench body. A voltage and current regulating power supply is provided at the front bottom of the test bench body, and an AEM stack to be tested is installed above the voltage and current regulating power supply. A debugging screen is provided at the front end of the test bench body below the cover plate, and an emergency stop switch is provided below the debugging screen. A hydrogen back pressure valve is provided below the emergency stop switch. An alkali tank is installed inside the test bench body, and a metering pump is installed at the rear end of the alkali tank. This utility model integrates the components into one unit, enabling testing and verification of key performance indicators of AEM electrolyzers, such as electrolysis efficiency, energy consumption, gas production quality, polarization curve, durability, and sensitivity. It also features an internal hydrogen leakage sensor and dedicated ventilation openings, making it a highly intelligent test bench that ensures safety during the testing process.

The invention discloses a home-based care health assessment dynamic service orchestration method and system based on a large language model, and the method comprises the steps: (1) receiving a natural language health assessment request inputted by a user, and generating a structured task description tetrad through a large language model; (2) the task description tetrad is combined with a Prompt template to be input into a large language model, and an abstract evaluation plan is generated; (3) finding out a candidate service list meeting conditions in the service semantic knowledge base according to the service type required by each step in the abstract evaluation plan, and dynamically binding each step to an optimal main agent service provider and an optimal standby agent service provider; (4) deeply participating in an agent cooperation mechanism through a large language model; and (5) converting the bound task assembly line into a standard BPMN workflow, and driving an intelligent agent to orderly execute services through a workflow engine. According to the invention, the big language model is deeply integrated into the whole process of agent collaboration, and real dynamic intelligent service orchestration is realized.

The utility model discloses a gear box temperature control valve replacement frock relates to gear box temperature control valve replacement technical field, and this gear box temperature control valve replacement frock, including support seat, the support seat one side is provided with the clamping slot, and the support seat is clamped on the support frame of gear box radiator through the clamping slot, and the other side of support seat is connected with screw rod no.

This utility model relates to the field of catalyst technology and discloses a denitrification plate-type catalyst addition device for thermal power plants. It includes a base plate, with a base fixedly connected to the middle of the upper end of the base plate. A vertical rod is rotatably connected to the upper end of the base, and a first horizontal rod is rotatably connected to the top of the vertical rod. A second threaded rod is connected to the inner wall of the first horizontal rod via a telescopic assembly, and a third horizontal rod is threadedly connected to the outer wall of the second threaded rod. A steel wire rope is connected to one end of the third horizontal rod via a rotating assembly, and a first lifting rod is provided at the lower end of the steel wire rope. A second lifting rod is slidably connected to the inner wall of the first lifting rod. In this utility model, stable clamping is achieved through the combination of clamping plates and pneumatic suction cups, and a pressure sensor automatically adjusts the torque. Multi-stage hydraulic telescopic rods increase the lifting distance and operational flexibility. Precise positioning of the first motor and other components, a counterweight to prevent tipping, adaptability to narrow and complex environments, and the cooperation of pins and limit slots ensure reliable and flexible lifting.

This invention relates to the field of automotive repair technology and provides a safety lifting device for new energy vehicle repair, comprising: a base with an electro-hydraulic rod for adjusting lifting on the base; a top plate mounted on the output rod of the electro-hydraulic rod, with a rotatable and adjustable mounting frame below the top plate; a vehicle lifting assembly including adjustable connecting arms mounted on the mounting frame, with a support plate fixed to the bottom end of the connecting arm for lifting the new energy vehicle, and the surface of the support plate having an anti-slip pad to increase the friction with the vehicle; and a limiting mechanism mounted on the connecting arm for limiting the movement of the new energy vehicle. This solution solves the problem of insufficient stability in current automotive repair lifting devices during lifting.

The utility model provides a scraper fineness meter calibrating device which comprises a calibrating workbench, a calibrating jig, a scraper fineness meter, a driving case, a calibrating screw rod, a driving motor and an identifying structure, the calibrating jig is installed at the front end of the surface of the calibrating workbench, the scraper fineness meter is placed on the calibrating jig, and the driving case is installed on the calibrating screw rod. The driving case is mounted at the rear end of the surface of the verification workbench; the verification screw rod is mounted in front of the driving case, the driving motor is fixedly mounted at the top of the driving case, and an output shaft of the driving motor is connected with the verification screw rod; the identification structure is slidably mounted in front of the driving case and is engaged with the verification screw rod; according to the utility model, with the arrangement of the verification tool and the identification structure, a large amount of workers are not required to participate in verification, the accuracy of obtained information is high, and the verification process is simple.

The invention belongs to the technical field of bearing materials, and discloses vinyl hyperbranched polysiloxane, a polyvinyl composite material bearing and a preparation method.The preparation method of the vinyl hyperbranched polysiloxane comprises the following steps that a first siloxane monomer containing at least four vinyl groups and a second siloxane monomer containing sulfydryl are mixed, then adding a photoinitiator, uniformly mixing, and performing ultraviolet irradiation to obtain an intermediate; and slowly dropwise adding an aqueous medium into the intermediate, adding a catalyst at the same time, and then reacting at 60-90 DEG C for 4-8 hours to obtain the vinyl hyperbranched polysiloxane. According to the invention, an efficient and mild vinyl hyperbranched polysiloxane synthesis system is constructed, and the controllability and storage stability of the product structure are improved. According to the invention, high-efficiency compatibility of inorganic filler and a polyethylene matrix is realized by virtue of the synthesized vinyl hyperbranched polysiloxane, and the comprehensive performance and service reliability of the polyethylene-based composite material bearing are greatly improved.

The invention discloses a distribution network uninterruptible operation robot, and relates to the field of distribution network robots, the distribution network uninterruptible operation robot comprises a hydraulic lifting frame and an electrical cabinet fixedly connected with the top end of the hydraulic lifting frame, the top of a supporting block is fixedly connected with a supporting block, the side wall of the supporting block is fixedly connected with a first mounting block, and the inner side of the first mounting block is provided with a rotating mechanism. The driving motor drives the first rotating rod to rotate so as to drive the first rotating plate to rotate, the first rotating plate slides in the stress groove through the second driving rod, acts on the second rotating plate and enables the second rotating plate to rotate, and the design of the stress groove determines the sliding angle and the rotating amplitude, so that the rotating angle of the second rotating rod is accurately controlled; the direction and posture of the operation mechanical arm are affected, accurate operation adjustment is achieved, the hydraulic lifting frame controls the electrical box to ascend and descend through hydraulic drive, a high-altitude power grid is conveniently overhauled, the operation efficiency and flexibility are improved through precise power transmission and a linkage mechanism, and the safety and reliability of high-altitude operation are guaranteed.

The application provides a body intelligent robot control method and device, a terminal and a storage medium, and relates to the technical field of robot autonomous task planning and motion control. The method comprises the following steps: collecting multi-modal prompt information of a robot to be controlled; based on a large-scale pre-training language model, multi-modal prompt information and an atomic skill library suitable for long sequence whole body linkage motion of the robot, generating a corresponding chain reasoning text when the robot to be controlled executes a task description, and decomposing the task description into an atomic skill calling sequence according to the chain reasoning text, wherein the atomic skill calling sequence comprises a plurality of atomic skills in calling order; after each atomic skill is called and activated one by one in the calling order, the robot to be controlled is controlled to execute each atomic skill in the calling order. The application can realize seamless connection of whole body motion and local operation of the robot, so that the robot can efficiently complete a long sequence task in a complex environment.

The utility model discloses a small hydraulic iron notch drill which comprises an impact mechanism, a cylinder sleeve and a piston. The impact mechanism comprises a reversing valve, the reversing valve comprises a reversing valve seat and a reversing valve element, the reversing valve element is arranged in the reversing valve seat, the reversing valve element is fixedly connected with the reversing valve seat in a sealed mode, the reversing valve element is hollow, the reversing valve element is provided with a valve element oil inlet hole and a valve element oil outlet hole, and the valve element oil inlet hole is communicated with the valve element oil outlet hole. The reversing valve seat is provided with a valve seat oil inlet hole and a valve seat oil outlet hole, the valve seat oil inlet hole is communicated with the valve element oil inlet hole, the valve seat oil outlet hole is communicated with the valve element oil outlet hole, an oil cylinder sleeve oil inlet hole and a cylinder sleeve oil outlet hole are formed in the peripheral side of the cylinder sleeve, the valve element oil inlet hole is communicated with the cylinder sleeve oil inlet hole, and the valve element oil outlet hole is communicated with the cylinder sleeve oil outlet hole. And the valve core oil outlet hole is communicated with the cylinder sleeve oil outlet hole. The utility model solves the technical problems of large volume, complex structure and low and difficult operation efficiency for small blast furnace areas in the technical field of iron and steel smelting industry.

The invention relates to a pipeline mounting device. The pipeline installation device comprises an installation frame body which is configured to be assembled on the outer side of a pipeline, the installation frame body is provided with a first side and a second side which are opposite, the first side deviates from the pipeline, and the second side faces the pipeline; the first supporting assembly comprises a first supporting table and a second supporting table, the first supporting table is connected with the first side of the mounting frame body, the second supporting table is arranged on the second side of the mounting frame body, the second supporting table is slidably connected with the mounting frame body, and the second supporting table is configured to exceed the outer edge of the first supporting table in the width direction of the pipeline mounting device; wherein the width direction of the pipeline mounting device is parallel to the axial direction of the pipeline. The pipeline mounting device can flexibly adjust the area of a supporting platform formed by matching of the first supporting platform and the second supporting platform, the problem of operation dead angles caused by fixation of a traditional operation platform is effectively solved, and the operation efficiency is improved.

The invention discloses a relay selection method and device, a computer readable storage medium and a computer program product, and relates to the technical field of communication. The method comprises: a candidate relay sends first information, correspondingly, UE receives at least one piece of first information sent by at least one candidate relay, the at least one piece of first information and the at least one candidate relay are in one-to-one correspondence, and each piece of first information is associated with the mobility of the corresponding candidate relay in a first time period; and the UE selects a target relay from the at least one candidate relay at least according to the at least one piece of first information. According to the scheme of the invention, the UE can accurately select the relay with higher stability, and the reliability of the relay service is improved.

This invention belongs to the field of mechanical automation engineering, specifically a reconfigurable multifunctional detection and decontamination robot. It includes a multifunctional integrated detection and decontamination unit, a base step unit, and a multifunctional folding bed unit. The integrated multifunctional detection and decontamination unit can be quickly reconfigured and installed with either the base step unit or the multifunctional folding bed unit, enabling both vertical and horizontal multifunctional detection and decontamination robots. This is suitable for personnel in contaminated nuclear environments in both standing and horizontal positions. This invention allows for rapid response based on actual on-site conditions, easily and quickly completing the reconfiguration and installation of two different modes of detection and decontamination robots. It features modularity, simplicity, efficiency, ease of operation, and wide applicability.

This invention relates to the field of satellite communication technology, and particularly to an inter-satellite routing method and apparatus for low-Earth orbit (LEO) constellation networks. The method includes: autonomously learning and calculating routes within the constellation network based on the OSPF and / or BGP protocols running in the constellation network, and storing a routing table; the routing table includes at least the north-south vertical hop count and the east-west horizontal hop count from the current satellite node to every other node in the constellation network; in response to a route forwarding service to the destination satellite node, determining the hop count based on the routing table; determining whether a forwarding rectangle can be formed based on the hop count; wherein the current satellite node and the destination satellite node are the two opposite vertices of the forwarding rectangle, and the north-south vertical hop count and the east-west horizontal hop count are the two side lengths of the forwarding rectangle; if a forwarding rectangle can be formed, determining the output interface for route forwarding based on the area of ​​the forwarding rectangle and the routing table. This solution can efficiently and accurately achieve inter-satellite routing in constellation networks.

The utility model relates to the technical field of electric power equipment operation and maintenance devices, in particular to a high-low voltage remote power cut and transmission and robot collaborative inspection integrated device which comprises a four-axis linkage inspection robot body and a high-low voltage power cut and transmission control module arranged in a circuit, and a supporting base is arranged at the bottom of the four-axis linkage inspection robot body. A horizontal moving assembly is arranged below the supporting base and comprises a left guide rail and a right guide rail which are mutually symmetrical, sliding grooves are formed in the guide rails, opening parts of the sliding grooves are formed in the side faces of the guide rails, servo motors are fixedly installed at the ends of the guide rails, and lead screws are fixedly installed at the tail ends of output shafts of the servo motors. The lead screws are in threaded connection with sliding blocks, the sliding blocks are located in the sliding grooves and are in sliding connection with the sliding grooves, a supporting plate is fixedly installed between the two sliding blocks, and the supporting base is installed on the supporting plate. According to the utility model, movement and multi-degree-of-freedom adjustment operation are facilitated, and the inspection coverage range is expanded.

The present application relates to a kind of steel bar binding machine, comprising: mounting bracket, first driving device, second driving device, binding device;First driving device, second driving device are mounted on mounting bracket, and binding device is installed at the bottom of second driving device;Wherein, first driving device is installed in the lower part of mounting bracket, and first driving device is used to drive mounting bracket to move forward, backward, left or right along steel bar, second driving device is installed in the upper part of mounting bracket, and second driving device is used to drive binding device to move forward, backward, left or right, solve the problem of low efficiency and poor flexibility of existing steel bar binding equipment;Wherein, the mounting bracket includes upper frame, lower frame and multiple columns, and the upper frame is connected with the lower frame by column;Mounting bracket uses double-layer frame to provide stable structural support for steel bar binding machine, ensure that steel bar binding machine keeps stable when running and binding, can effectively bear the weight of each component and working impact force.

The invention provides an edge cloud collaborative data processing system and method based on deep learning, and relates to the technical field of edge cloud collaboration, and the method comprises the steps: extracting a task feature vector of edge terminal equipment from a data task flow; constructing a task dependency graph, and determining an allocation label during sub-task processing through the task dependency graph and the resource allocation granularity of the sub-tasks in the data task flow; carrying out confidence adjustment on each distribution label to obtain execution confidence of the subtasks on the edge terminal equipment, and further carrying out load transfer analysis on the edge terminal equipment to obtain load transfer quantity of the edge terminal equipment; when the load transfer amount is smaller than a preset load transfer threshold value, the subtasks in the data task flow are asynchronously executed in the edge terminal device, and otherwise, the data task flow in the edge terminal device is sent to the cloud server through the edge cache server for batch processing. The task load between the edge terminal device and the cloud server can be divided under the condition that heterogeneous computing resources are limited.

The utility model discloses an auxiliary mounting device for a side wall water stop steel plate, which belongs to the technical field of water stop steel plate mounting and comprises a connecting rod, a first limiting piece, a first connecting piece, a second connecting piece and a second limiting piece are sequentially and detachably connected onto the connecting rod along the length direction of the connecting rod, and the bottom of the first connecting piece is fixedly connected with a lining plate. The lining plate and the water stop steel plate are arranged in parallel, the bottom of the second connecting piece is in threaded connection with an adjusting screw rod, the adjusting screw rod is perpendicular to the lining plate, and the two sides of the water stop steel plate are connected with the adjusting screw rod and the lining plate respectively. According to the auxiliary installation device for the side wall water stop steel plate, the safety and the construction efficiency in the construction process are improved, and meanwhile the quality of waterproof engineering can be guaranteed.

The application discloses a bad segment automatic detection method and system of electroencephalogram based on contrast self-supervised learning. The method comprises the following steps: denoising, segmenting and labeling the electroencephalogram data sequence; performing multi-resolution mapping on the electroencephalogram segment, and aggregating the feature vector to capture multi-level features; modeling the time dependence within a single electroencephalogram segment and between continuous multiple electroencephalogram segments, thereby further highlighting the difference between bad segments and normal electroencephalogram segments in dynamic evolution; training a multi-level morphological representation module in a contrast self-supervised manner to fully learn the domain-invariant characteristics of the electroencephalogram segment, and then fine-tuning the model to the bad segment detection task through limited labeled data to alleviate label dependence. The application can effectively distinguish normal electroencephalogram and bad segments by fully representing the potential deep characteristics of the original electroencephalogram signal, and the self-supervised learning method can effectively alleviate the performance degradation of bad segment detection caused by limited labeled data.