66results about How to "Avoid detection" patented technology

This invention provides a valve internal leakage diagnostic device, including a valve body, a hollow support base integrally connected to the middle of the valve body, an internal sealing assembly inside the hollow support base, a rotating handwheel connected to the top of the internal sealing assembly, pipes connected to both sides of the valve body, flanges connected to the ends of the pipes, four sets of mounting holes evenly distributed on the flanges, an adjustable support assembly fitted on the outer wall of the pipes, and an internal leakage detection assembly connected to the side of the adjustable support assembly facing the outer wall of the pipes. This invention has the following advantages: its simple structure eliminates the need to disassemble the valve for inspection, and it can be directly installed outside the valve body, enabling the inspection of a large number of valves, thus avoiding the problem of some valves having internal leaks that are difficult to detect and thus causing leakage.

This application discloses a method, apparatus, air conditioning system, and storage medium for detecting the lid status of an electrical control box, relating to the field of air conditioning equipment technology. The method for detecting the lid status of the electrical control box includes: acquiring the opening degree of the throttling device, the rotational speed of the cooling fan, the frequency of the compressor, and the ambient temperature of the electrical control box when the electrical control box is in an overheated operating state; and determining the lid status of the electrical control box based on the opening degree of the throttling device, the rotational speed of the cooling fan, the frequency of the compressor, and the ambient temperature of the electrical control box. This method automatically detects the lid status of the electrical control box using the opening degree of the throttling device, the rotational speed of the cooling fan, the frequency of the compressor, and the ambient temperature of the electrical control box, thereby avoiding manual inspection of the lid and improving the efficiency of lid status detection.

The application relates to the technical field of surface defect intelligent detection, and discloses a surface defect detection method and device based on multi-view synthetic imaging. The method comprises the following steps: acquiring a multi-view synthetic image without dead angles of a detected target after quality evaluation; performing highlight suppression and shadow enhancement on the multi-view synthetic image to obtain an enhanced multi-view synthetic image; separating the enhanced multi-view synthetic image into corresponding multiple single-view images, respectively performing defect detection on each single-view image to obtain corresponding single-view defect detection results, and generating a final overall detection result based on the single-view defect detection results. Through multi-view synthetic imaging, image quality control, high-reflective surface enhancement processing and multi-view joint defect detection, the application can effectively solve the problems of light interference and defect missing detection in high-reflective surface detection, and can realize high-precision surface defect detection with no dead angle coverage in a single detection.

This application relates to the technical field of electrical testing and discloses an online four-wire integrated testing device. The testing device includes a frame, a moving mechanism, and a testing mechanism. The frame has a testing platform, the moving mechanism is mounted on the testing platform, and the product under test is placed on the horizontal moving end of the moving mechanism. The testing mechanism is located above the moving mechanism and includes a lifting assembly, several probe groups, and several electrical drive rods. The lifting assembly is mounted on the frame, and each electrical drive rod is detachably connected to the vertical drive end of the lifting assembly. The probe groups are slidably connected to the electrical drive rods to correspond to the test ports of the product under test. This application effectively improves the quality inspection efficiency of circuit board products during the manufacturing process, enabling rapid detection of multiple defects in the online production stage, avoiding the tediousness and inaccuracy of manual inspection, and reducing downtime in the production process.

Embodiments are directed to preventing sandbox environments from being detected by potentially malicious applications. To this end, execution of an application is monitored and information about the execution is provided to a reinforcement learning machine learning model. The model generates suggested modifications to be made to the executing application. The model is provided information indicating whether the application successfully executed and this information is used to train the model for other modifications. By modifying the execution of potentially malicious software during execution, detection of the sandbox environment can be prevented and better analysis of potentially malicious application features can be understood.

The utility model relates to the technical field of camouflage nets, and discloses a sandy soil camouflage toggle clip camouflage net structure which comprises a bottom net, a color strip layer is arranged at the top of the bottom net, a plurality of groups of camouflage strips are arranged on the color strip layer, a plurality of groups of toggle clips are arranged at the top of the bottom net, and the toggle clips are used for limiting and fixing the camouflage strips. According to the sandy soil camouflage toggle clip camouflage net structure, the camouflage strips on the colored strip layer can be fixed through the toggle clip piece, stable supporting and fixing points are provided for the camouflage strips, the toggle clip can tightly grasp the camouflage strips under various complex environment conditions no matter whether the camouflage strips are lightly fished by breeze or attacked by strong wind, the camouflage strips are effectively prevented from flying around, and the camouflage net structure is simple in structure and convenient to use. In this way, the camouflage net always keeps complete and stable appearance in the long-time use process, and the reliability and durability of the camouflage effect are greatly improved.

The wearable lumbar and dorsal muscle training detection device comprises side bandages arranged on the two sides of the waist, the side bandages are connected through elastic bands, and hard plates are fixed to the front ends of the side bandages. Extension plates are upwards arranged on the rear sides of the side bandages, and detection motor pieces corresponding to the erector spinalis are evenly installed on the inner sides of the extension plates and used for detecting the stress states of the left erector spinalis and the right erector spinalis in the training process. A tightness observation mechanism is arranged on the outer side of the hard plate on one side and comprises a fixed box, a sliding plate, a boss, a sliding groove, a spring and an indication line, and the wearing tightness degree is visually displayed through the position change of the sliding plate. A tightening mechanism is arranged on the outer side of the hard plate on the other side and comprises a supporting plate, a rotating shaft, a rotary knob, an inclined plate, a torsional spring and a wedge-shaped groove matched with the connecting belt, tightening and fixing of the connecting belt are achieved through a one-way limiting structure, and locking is controlled to be released through the rotary knob so as to achieve quick detaching.

This utility model relates to a mechanical comparator suitable for bearing testing, comprising a housing, a first positioning block fixedly mounted on the top of the housing by a first bolt and a second bolt, and a base plate fixedly connected to the bottom of the housing; an adjusting block fixedly mounted inside the housing, the adjusting block being connected to a first guide post, the first guide post being fitted with a first guide sleeve; the adjusting block being connected to a second guide post, the second guide post being fitted with a second guide sleeve; a fixing block being mounted on the upper end of the first and second guide posts; and a second positioning block being connected to the fixing block; the inner diameters of both the first and second positioning blocks are matched to the bearing assembly to be tested; an adjustment device is mounted on the base plate for adjusting the gap between the fixing block and the adjusting block. Thus, the inner holes of the first and second positioning blocks precisely match the outer ring of the bearing to be tested, and with the coaxiality control of the mandrel and measuring ring, the bearing is ensured to be subjected to uniform force, avoiding subjective errors caused by reliance on worker experience in traditional dial indicator testing.

This invention relates to an active learning-based data-free black-box attack method and system based on multidimensional value assessment, belonging to the field of artificial intelligence security technology. This method constructs a pre-emptive "sample screening funnel," utilizing a local substitution model to perform multidimensional assessments of sample boundary approximation, information uncertainty, and geometric diversity before sending images to a commercial cloud API. Only high-value samples are selected for querying, thereby achieving low-cost, high-efficiency model theft and adversarial attacks. This invention ensures the diversity and training stability of data-free generated samples, significantly improves the transfer success rate of adversarial examples, and achieves "low-cost, low-risk" economical attacks. It has strong versatility and can be seamlessly integrated into various existing data-free attack frameworks, facilitating deployment and implementation in practical security assessment systems.

The utility model relates to mould processing technical field, concretely is a kind of online size detection device for mould processing, it includes: bottom plate, bottom plate upper surface and support table bottom fixed connection, support table upper surface around is equipped with guide hole, four the guide hole is arranged in circumferential array, guide hole inside sliding installation has guide block, support table upper surface center fixed mounting has cushion block, support table top is provided with detection assembly, guide block upper surface and L type board bottom fixed connection, L type board top side fixedly connected with antiskid soft pad, guide block lower surface and connecting block fixed connection, connecting block one side is connected with the drive assembly for driving connecting block along the radial direction of support table movement;Through the cooperation of four around synchronous radial clamping mechanism and detection assembly, effectively realized the all-direction reliable fixing of mould in detection process, avoided the positioning instability or detection knock due to one-sided clamping, improved the consistency and accuracy of fillet and contour size detection.

This utility model relates to the field of testing devices and discloses an elevator wire rope wear detection device, including a handle. A connecting block is fixedly connected to the top of the handle, and a rotating rod is rotatably connected inside the connecting block. A detection component is provided at one end of the rotating rod, and multiple fixed discs are fixedly connected to one end of the rotating rod. A connecting column is slidably connected inside each fixed disc, and multiple sliding columns are fixedly connected to the outer wall of each connecting column. A handle is fixedly connected to one end of each connecting column, and multiple fixing components are provided inside each connecting column. In this utility model, the detector part is unlocked by first grasping the handle and pulling it outward, and then the new detector is reinstalled on the device. This achieves the effect of easily removing the detector, avoiding the need to use different devices to detect different wire ropes, thereby improving the efficiency of the elevator wire rope wear detection device.

The invention relates to the technical field of coal mine safety detection equipment, and provides a mining intrinsic safety type aerial fog spraying controller which comprises a rod tail seat, the top of the rod tail seat is connected with a telescopic rod piece, the top of the telescopic rod piece is connected with a handle pipe, the outer side of the handle pipe is connected with a handle cover, and the top of the handle pipe is connected with a first mounting plate. The two ends of the top of the first mounting plate are connected with connecting rods, the tops of the two connecting rods are connected with a shell, the outer side of the shell is connected with a control panel, a gas cylinder is connected between the two connecting rods, the top of the shell is connected with a second mounting plate, one end of the top of the second mounting plate is connected with an electromagnetic valve, and the outlet end of the electromagnetic valve is connected with a movable connector. The outlet end of the movable connector is connected with a smoke outlet nozzle, and the other end of the top of the second mounting plate is connected with a heating head. The technical defects of a traditional aerial fog spraying controller are comprehensively overcome through the height-adjustable telescopic rod piece, the direction-flexible spraying head, the uniform heat source design, the real-time monitoring system and safe and portable operation.

The utility model discloses a visual inspection device for fire-fighting glass products, relates to the technical field of glass inspection, and comprises a base, a U-shaped frame, a scanning mechanism and a clamping mechanism, the bottom of the U-shaped frame is fixedly connected to the middle position of the top wall of the base, and the clamping mechanism is arranged on the U-shaped frame. The scanning mechanism comprises a driving assembly, two moving assemblies and visual detection device bodies, the two moving assemblies are arranged on the two sides of the U-shaped frame correspondingly and are symmetrically arranged, the two visual detection device bodies are arranged on the two moving assemblies correspondingly, and the driving assembly is arranged at the rear ends of the moving assemblies; the two visual detection device bodies of the scanning mechanism are used for detecting the front side and the back side of the glass at the same time, the problem that after one side is detected, the glass is lifted again to detect the back side is avoided, and a roller is arranged at the bottom of an inner cavity of a U-shaped frame, so that more labor is saved when a worker places the glass.

A device and method for detecting the pull-out force of planetary gear shafts in automatic transmissions belong to the technical field of automotive automatic transmissions. The device includes a base, a gantry bracket, replaceable testing support fixtures, a pressure detector, a testing platform, a pressure sensor, a hydraulic cylinder, replaceable pressure heads, guide columns, and a hydraulic mechanism. All components are rigidly connected. The fixtures and pressure heads are interchangeable to accommodate different specifications of planetary gears. The hydraulic mechanism supplies pressure to the hydraulic cylinders, and the pressure sensor collects force values. The testing method includes four steps: fixture adjustment, placement and positioning, pull-out detection, result judgment, and completion. Hydraulic force is applied to press the shaft, the sensor collects data, and the detector performs judgment, storage, and data export. This invention, through multi-system collaborative design, achieves accurate and quantitative detection of the pull-out force at the riveting joint of the planetary gear shaft. It combines versatility, convenience, and data traceability, effectively solving many shortcomings of existing testing methods and providing reliable assurance for riveting quality control.

The application discloses a burr detection mechanism of a battery pole piece, which comprises a support, a linear motion unit and a detection assembly, wherein the linear motion unit is installed on the supporting surface of the support; the detection assembly comprises a mounting frame, a fixing frame, a camera and a light guide piece, the camera is located above the light guide piece, and the optical axis of the camera is obliquely arranged relative to the light emitting surface of the light guide piece, so that the light of the pole piece to be detected is guided to the camera through the light guide piece; the mounting frame is connected with the linear motion unit; the fixing frame comprises a first fixing plate and a second fixing plate; the first fixing plate is connected with the mounting frame; the camera is fixed on the second fixing plate; a locking hole is formed in the side of the second fixing plate close to the first fixing plate; an arc-shaped opening is formed in the first fixing plate; and the opening is matched with the locking hole. Compared with the traditional manual microscopic sampling inspection mode, the burr detection mechanism can avoid the blind area of static detection, is suitable for dynamic detection on a continuous production line, and is favorable for improving the detection efficiency and the detection quality.

The application provides a flow redirection method and device, electronic equipment and storage medium. The method comprises the following steps: obtaining a flow message sent by a first virtual machine to a second virtual machine through a hook function in a virtual network device; and redirecting the flow message to a target object, so that the target object processes the flow message. The virtual network device is used for mutual communication between the first virtual machine and the second virtual machine. Since the virtual machines on the same host machine directly communicate with each other through the virtual network device, the flow message between the virtual machines is obtained and redirected through the hook function in the virtual network device, thereby avoiding the problem that the flow message between the virtual machines cannot pass through the physical network device to be redirected by the physical network device, and thus the flow message between the virtual machines can be effectively redirected through the hook function in the virtual network device.

The utility model relates to the technical field of aluminum alloy production, in particular to an auxiliary device for drilling a component sample of an aluminum alloy ingot casting test piece, and aims to solve the problems that when the component sample is drilled on the aluminum alloy ingot casting test piece at present, the collection is difficult due to lack of a chipping blocking structure and the chipping sample splashes everywhere, the sample collection amount is insufficient, and the drilling efficiency is low. And finally, the component drilling efficiency of the test piece is relatively low. The device is composed of a long belt and a sample sleeve connected to the belt, the sample sleeve plays a role in preventing a sample from splashing, the sample sleeve is fixed to an aluminum alloy ingot casting test piece through the belt, adjusting teeth are fixed to the belt and used for fixing the belt and the sample, and a plurality of sample sleeve nuts are connected to the middle of the belt through connecting buckles. According to the device, the sample sleeve is fixed on the surface of the test piece, so that the effect of preventing the sample from splashing is achieved, the problem that the component sample of the aluminum alloy ingot casting test piece is splashed during drilling is effectively solved, the one-time success rate of sample sampling is ensured, and then complicated procedures such as resampling and detection are avoided.

This invention belongs to the field of elevator light curtain technology and discloses an elevator light curtain with door opening and closing warning function. It includes a light curtain housing and positioning frames fixed at both ends. A groove is formed on the left side of the light curtain housing, and the light curtain body is connected inside the groove. Warning LEDs are installed on both sides of the light curtain body. A movable frame is fitted around the outside of the light curtain body. Limiting grooves are formed on the front and rear sides of the light curtain housing, and the movable frame slides in cooperation with the limiting grooves. This elevator light curtain with door opening and closing warning function completely changes the traditional "passive response" safety protection mode of light curtains through the design of multiple arrays of dual-color warning LEDs, constructing an active and efficient warning system. During the elevator door closing process, the high brightness and wide warning range of the dual-color flashing lights can clearly remind the elderly and children who move slowly, and can also effectively attract the attention of passengers focused on electronic devices, avoiding collisions or pinching accidents caused by delayed reaction.

The application provides a collision detection circuit, a method and a vehicle, and belongs to the technical field of vehicle detection, wherein the collision detection circuit comprises a data acquisition module and at least two monitoring modules connected with the data acquisition module respectively, and the data acquisition module is connected with a controller of the vehicle; when the collision signals of the at least two monitoring modules are synchronously acquired, the data acquisition module transmits the collision signals to the controller, so that the controller controls to close high-voltage components of the vehicle. The collision detection circuit of the vehicle provided by the application can avoid the operation and processing steps of the controller on the collision signals, and can instantly determine the existence of a collision event through the collision signals of the two monitoring modules. The controller controls to close the high-voltage components of the vehicle according to the collision signals, so that the detection failure or signal delay is prevented, the response time of the system power-off during the collision is shortened, and the safety and reliability of the system are improved.

The utility model relates to a tray in-place detection device and conveying equipment. The tray in-place detection device comprises a supporting piece. The baffle is rotationally connected to the supporting piece; the position sensor is installed on the supporting piece and located on one side of the baffle in the thickness direction; the trigger piece is connected to the side, facing the position sensor, of the baffle, and the extension direction of the trigger piece intersects with the extension direction of the baffle; the baffle is used for driving the triggering piece to move towards or away from the position sensor in the rotating process, and the position sensor is used for detecting the distance between the triggering piece and the position sensor; the tray in-place detection device is configured in the mode that in the in-place state, the tray abuts against the side, away from the position sensor, of the baffle, and the distance between the trigger piece and the position sensor is a preset distance. Therefore, according to the tray in-place detection device and the conveying equipment, the positioning accuracy of the tray can be improved.

The invention relates to the technical field of automobile pedal testing, and discloses an intelligent networked automobile pedal testing device which comprises a shell and a base, the base is arranged at the bottom of the shell, a fixing support is fixedly connected to the surface of the shell, a groove is formed in the top of the fixing support, and a supporting rod is fixedly connected to the groove in the top of the fixing support. A pedal plate is fixedly connected to the bottom end of the supporting rod, and a sensor is fixedly connected to the upper surface of the pedal plate, so that the problem that a test result is lack of objectivity due to the influence of subjective consciousness and individual differences of testers during manual testing is avoided, and the problems of fatigue, inattention and the like in the testing process are solved; according to the invention, the test result is not accurate due to the fact that the test device needs to be manually treaded for testing, manual operation and errors are reduced, the labor cost and risks are reduced, pressure can be flexibly adjusted for testing, real use conditions can be stably simulated, and the accuracy and reliability of the test result are ensured.

The utility model provides an intelligent analysis alarm device for security check, which relates to the technical field of security check analysis and comprises a security check column, a security check circular cavity is arranged in the security check column, access holes are symmetrically arranged on the surface of the security check column and are communicated with the security check circular cavity, arc grooves are arranged on the inner walls of one sides of the two access holes, and the arc grooves are communicated with the security check circular cavity. An arc cover is embedded in the arc groove, a metal detector and a video monitoring camera are fixedly mounted on the surface of the inner wall of the security check circular cavity, and fan cavities are formed in the positions, above and below the security check circular cavity, of the inner wall of the security check column. According to the utility model, when entering the security check circular cavity, a second motor drives a rotating column to rotate, the rotating column rotates to drive an L-shaped plate to rotate, the L-shaped plate rotates to drive an arc cover to be separated from the inside of an arc groove, and the arc cover can seal an access hole, so that the effect of sealing the security check circular cavity can be achieved; therefore, the effect of preventing external electromagnetism and signals from interfering internal detection can be achieved, and the security check accuracy can be improved.

The utility model discloses a cable fault tester capable of fast testing, which relates to the technical field of cable fault testers and comprises a tester body, jacks are symmetrically arranged in the tester body, connecting plugs are inserted in the two jacks, connecting wires are fixedly mounted at the tops of the connecting plugs, and the connecting wires are connected with the tester body. Positioning assemblies are arranged on one sides of the two sockets in the tester body, each positioning assembly comprises a rotating rod which is rotationally connected to the interior of the tester body and located on one side of the corresponding socket, and a sleeve is slidably connected to the exterior of each rotating rod; according to the cable fault testing device, the cable fault can be tested, after the cable fault testing device is connected with a cable through a connecting line and a connecting plug is inserted into a socket, positioning can be carried out, the situation that detection is influenced by accidental separation is avoided, meanwhile, the connecting plug is conveniently taken down subsequently, operation by workers is facilitated, rapid testing is facilitated, and convenience and practicability are improved.

The invention discloses an open space personnel management method based on unmanned aerial vehicle vision, and relates to the technical field of image monitoring. Comprising the following steps: step 1, generating a current frame fusion detection result of each unmanned aerial vehicle based on multi-unmanned aerial vehicle cooperative sensing of a self-organizing Mesh network; 2, multi-person continuous tracking based on a space-time association diagram is carried out, each unmanned aerial vehicle constructs the space-time association diagram according to a current frame fusion detection result and a previous frame fusion detection result, and a current frame tracking result is generated; and step 3, multi-scale personnel counting and area management based on a Gaussian Laplacian pyramid, wherein each unmanned aerial vehicle gathers statistical data and alarm information through a self-organizing Mesh network and transmits the statistical data and the alarm information to a ground management and control platform. The problems that in the prior art, the coverage range of a single unmanned aerial vehicle is limited, the accuracy of multi-target tracking is insufficient in sheltering and appearance similar scenes, a single-scale detection method is poor in adaptability to personnel target size changes, and a counting result verification mechanism is lacked are solved.

The utility model relates to the technical field of lifts, in particular to a bidirectional mechanical trigger type lift car channel safety detection construction lift which comprises a lift car and a guide rail frame and further comprises an ascending channel detection assembly arranged at the top of the lift car and a descending channel detection assembly arranged at the bottom of the lift car. In the ascending process of the lift car, the ascending channel detection assembly touches a foreign matter, the upper portion is pressed, the first limiting switch is triggered, the guide rail frame stops driving the lift car to ascend, and the lift car returns to the initial position after pressure is removed; in the descending process of the lift car, the descending channel detection assembly touches a foreign matter, the lower portion is pressed, the second limiting switch is triggered, the guide rail frame stops driving the lift car to descend, and the lift car returns to the initial position after pressure is removed. Through a bidirectional mechanical trigger structure and an elastic reset design, the device detects foreign matters in an upper channel and a lower channel of the lift car in real time, timely responds and automatically resets, and ensures safe and reliable operation of the construction lift.

This utility model belongs to the field of symmetry detection and discloses a device for detecting the symmetry of overflow bricks. It includes a first detection device and a second detection device, which are symmetrically installed on both sides of the brick. The first and second detection devices detect the symmetry of the brick through a measuring device. The measuring device accurately quantifies and evaluates the symmetry of the brick based on the distance between the upper surface of the first detection element in the first detection device and the upper surface of the brick, and the distance between the upper surface of the first detection element in the second detection device and the brick. Compared with the subjective judgment of traditional manual visual inspection, comparing specific distance values ​​can more objectively and efficiently determine the symmetry of the brick structure, effectively improving the accuracy and reliability of brick quality inspection.

The invention discloses a grounding wire state active monitoring device and method suitable for a global distribution network. The device comprises a monitoring module, a control module and a communication transmission module. The monitoring module collects geomorphic characteristics, wind speed, clamping pressure and grounding resistance parameters of a grounding point through a camera and a multi-type sensor. The control module fuses multi-source information based on the improved D-S evidence theory, achieves the safety state evaluation of the grounding wire, and optimizes a communication path through an impedance matching algorithm. And the communication transmission module adopts a LoRa adaptive frequency hopping technology to dynamically adjust radio frequency parameters, so that the reliability of data transmission in a complex environment is ensured. According to the method, the reverse power transmission risk of the distributed power supply can be effectively dealt with, global real-time monitoring, intelligent evaluation and risk early warning of the grounding wire state are realized, and the safety and management efficiency of distribution network maintenance operation are remarkably improved.

The application discloses a container detection method, system and device based on machine vision and a storage medium, relates to the technical field of containers, and comprises the following steps: obtaining colored detection parts and non-colored detection parts based on a seven-item inspection method of containers; building an external contour model; performing one-time filling on the external contour model based on machine vision; obtaining a virtual container model; and identifying defects of the container based on the virtual container model. The application is used for solving the problem that, in the existing container detection method, when there are defects inside the container or defects in the blind area of the container outside, the defects cannot be detected in a targeted manner, and after the defect parts are obtained, the identification of the defects is relatively fuzzy, thereby affecting the maintenance of the management personnel and the use of the container.

The invention discloses a non-contact magnetic flux leakage internal detection device for a pipeline, and belongs to the technical field of pipeline detection. The device comprises a driving module, a universal connection module and a magnetic flux leakage detection module which are connected in sequence. An excitation unit of the magnetic flux leakage detection module is provided with a magnetization mechanism and a magnetic field signal acquisition mechanism, and the outer diameter enclosed by a magnetization assembly is smaller than the outer diameter of a supporting disc, so that non-contact excitation is realized. According to the non-contact magnetic flux leakage internal detection device for the pipeline, direct friction between an excitation structure and the inner wall of the pipeline is fundamentally avoided, damage to an inner wall coating or a body is effectively prevented, and the requirement for the smoothness of the inner wall of the pipeline is greatly reduced; the adaptability, passing ability and operation stability of the device to complex working conditions such as scaling and corrosion are improved, the signal quality is guaranteed through the self-adaptive attached signal collector, it is guaranteed that the device smoothly passes through a bent pipe section through the universal connecting module, and safe, stable and high-integrity detection within the wide pipeline diameter range is achieved on the whole.

The invention discloses a multi-angle scanning and curved surface unfolding weld defect detection method, system and device, and the method comprises the steps: controlling each group of triangular laser contour sensors to scan a weld region of a target welding object, and obtaining a multi-view weld point cloud; point cloud fusion processing is carried out on the multi-view welding seam point cloud to obtain a three-dimensional surface point cloud of the welding seam area; performing curved surface expansion processing on the three-dimensional surface point cloud to obtain a two-dimensional expansion graph; performing fusion processing on the three-dimensional surface point cloud and the two-dimensional expansion graph according to a preset fusion algorithm to obtain a fused image; and inputting the fused image into a preset defect detection model to obtain a defect detection result. According to the method, the multi-view weld point cloud of the weld area is obtained, the problems that data are incomplete and detection blind areas are prone to occurring are avoided, curved surface expansion is conducted on the three-dimensional surface point cloud to obtain the two-dimensional expansion view, then the three-dimensional surface point cloud and the two-dimensional expansion view are fused, and the geometric feature utilization rate of the two-dimensional expansion view to the three-dimensional surface point cloud can be increased.