325results about How to "Guaranteed detection accuracy" patented technology

The invention relates to the technical field of data processing, in particular to a covariance inverse matrix recursive updating method for on-satellite hyperspectral anomaly detection, which comprises the following steps: acquiring a hyperspectral data stream; carrying out adaptive dimension reduction processing on the data stream and loading an initial background model; extracting local background statistics by adopting a sliding window mechanism, generating a background spectrum dictionary by utilizing online dictionary learning, calculating a reconstruction error between a current pixel and the dictionary and a Mahalanobis distance between the current pixel and a background model, and fusing to generate an abnormal score; performing abnormal confidence coefficient evaluation by combining the spatial context information and the spectral angle matching degree, and updating a spectral mean vector by using an exponential weighted moving average algorithm based on non-abnormal pixel data; and the updated model is injected into the next round of processing to form a recursive chain. According to the method, the high calculation complexity of direct inversion of a covariance matrix is avoided, real-time anomaly detection on a satellite is realized, the downloading amount of original data is remarkably reduced, and the congestion of a satellite-ground communication link is relieved.

The invention belongs to the technical field of swivel bridge detection, and particularly relates to a swivel bridge horizontal alignment detection device which comprises a mounting seat fixed to the upper end of an abutment, a controller is fixedly connected to the side wall of the mounting seat, and two guide boxes are symmetrically and fixedly connected to the upper side wall of the mounting seat. After the swivel bridge construction is completed, mechanical contact detection is arranged on the abutment, compared with a detection assembly arranged between two swivel bridges which are spaced by four meters, a fixed and accurate mounting reference can be provided for the detection device by means of a stable structural foundation of the abutment, and a detection structure does not need to be arranged between the bridges which are spaced by four meters; the problems of inconvenient operation, large assembly fixing difficulty and the like caused by cross-interval installation are avoided, the bending deformation of the detection rod due to the gravity of the detection rod can be effectively avoided, and the detection precision is guaranteed from the installation reference and the detection structure.

The invention discloses a cuboid and cylinder space collision detection method, which comprises the following steps: based on a preset projection axis set, respectively calculating projection intervals of a cylinder and a cuboid on each projection axis in the preset projection axis set by adopting a projection axis method; if at least one projection axis which enables the projection interval of the cylinder to be not overlapped with the projection interval of the cuboid exists in the preset projection axis set, judging that the cylinder and the cuboid do not collide with each other; and if the projection axis which enables the projection interval of the cylinder to be not overlapped with the projection interval of the cuboid does not exist in the preset projection axis set, judging whether the cylinder collides with the cuboid or not by adopting projection surface convex hull detection. The efficiency and the accuracy of collision detection are effectively considered by comprehensively applying a staged strategy combining rapid projection axis elimination and precise projection surface convex hull judgment.

The invention provides an excrement sample microscopic image detection method and system based on morphological prior constraint, and the method comprises the steps: obtaining a global background region and a potential target candidate region through separation, so as to generate a standardized category morphological constraint parameter set; inputting the enhanced candidate region feature map into a preset category constraint double-branch instance segmentation network to generate an initial instance mask set corresponding to each independent visible component; performing closed-loop verification of mask integrity and category consistency on the initial instance mask set, performing iterative optimization correction on a mask region which is verified to be unqualified so as to generate an instance segmentation map, and synchronously performing spatial positioning and attribute marking on each independent mask region in the instance segmentation map; and based on an attribute marking result, performing multi-dimensional feature extraction and subdivision category identification on each independent mask region, and synchronously generating a corresponding excrement sample detection report. According to the invention, the precision, stability and complex scene adaptation capability of excrement microscopic detection can be greatly improved.

The embodiment of the invention discloses a garbage treatment method, a controller and cleaning equipment. The method can be used in cooperation with cleaning equipment and comprises the steps that image data and radar data collected for a target area are acquired; performing garbage detection on the image data based on the marked garbage type to obtain first garbage, and processing the radar data based on the reflectivity of at least part of points in the radar data and the first garbage to obtain second garbage except the first garbage in the radar data; and in response to the to-be-swept garbage in all the first garbage and all the second garbage, controlling the sweeping equipment to sweep the to-be-swept garbage. According to the technical scheme of the embodiment of the invention, the garbage omission ratio can be reduced.

This invention designs a multi-scale star surface impact crater detection method, system, and medium. The method includes the following steps: S1: Acquire star surface images and segment them into image patches of different scales; S2: Construct multiple impact crater detection sub-models; S3: Train each sub-model using star surface image patches of different scales; S4: Input the segmented star surface image to be detected into each pre-trained sub-model to obtain the detection results; S5: Select the bounding boxes with high confidence and large area among all candidate bounding boxes of each impact crater as the final detection result for that impact crater. This invention can simultaneously identify impact craters of different scales in star surface images with high accuracy, especially improving the accuracy and efficiency of identifying small impact craters, providing more accurate and comprehensive data support for lunar science research, and promoting the in-depth development of lunar exploration and geological research.

The application discloses a downhole multi-parameter logging device and belongs to the technical field of logging while drilling, comprising a drill collar, a battery module and a circuit module are respectively arranged at the two ends of the inner cavity of the drill collar and are axially fixed through locking modules, a metal centralizer is fixedly arranged in the inner cavity of the drill collar, a plurality of independent centralizing blocks are arranged at the center of the metal centralizer, the drill collar comprises a drill collar body, an antenna housing, a strip-shaped magnetic core and a coil, and stable signal transmission is guaranteed, the battery module comprises annular batteries and butterfly springs, can be replaced on site and has a damping function, the circuit module comprises resistivity, azimuth gamma and inclination measurement modules, is integrally designed and has strong anti-interference performance, the metal centralizer realizes self-adaptive centralizing through centrifugal force and hydraulic damping, and the independent centralizing blocks can compensate temperature errors, the device is stable in structure, is suitable for complex well conditions, is convenient to maintain and can realize accurate and synchronous measurement of multiple parameters, thereby providing reliable data support for logging while drilling.

This invention discloses an internal bore measuring machine, including a base, a seat, and a top steel plate covering the seat; a transition roller track, including a roller assembly and a gantry frame; a positioning device, including a frame, a top plate, a lifting cylinder; a rear inspection mechanism, including a fixed frame, a transverse movement mechanism and a transverse linear slide rail mounted on the fixed frame, a reciprocating measuring mechanism mounted on the transverse movement mechanism; a control cabinet with a built-in PLC as the main controller; a cantilever operation box assembly is provided on one side of the control cabinet, the cantilever operation box assembly including a cantilever, an operation box, and an enclosure assembly consisting of a front enclosure and two side enclosures respectively placed on both sides of the front enclosure, with a U-shaped cross-section, placed on the base and with the U-shaped opening fastened to the control cabinet, enclosing the positioning device and the gantry frame. This invention solves the problems of poor coordination of existing automatic detection and conveying, low efficiency of step-by-step detection, and insufficient rigidity.

The utility model discloses an IV detection device for double half battery pieces. The device comprises a rotary table mechanism and a detection mechanism, wherein the rotary table mechanism is used for bearing two battery pieces to be conveyed to the detection mechanism or transferred out of the detection mechanism; the detection mechanism comprises a simulation light source and two pressing modules which are oppositely and independently arranged, each pressing module comprises a deviation correction platform, a probe support arranged on the deviation correction platform, a first probe row group and a second probe row group, the first probe row group and the second probe row group are arranged on the probe support in a spaced mode, and the deviation correction platform is used for conducting position adjustment based on position information of a battery piece; the probe support is used for driving the first probe row group and the second probe row group to make contact with the detection points on the front face and the back face of the battery piece from the front face and the back face of the battery piece, and the simulation light source is used for providing simulation sunlight for the front face and the back face of the battery piece. According to the technical scheme, the IV detection efficiency of the battery pieces can be improved, and the detection precision of the two battery pieces can be ensured.

The present application belongs to the field of defect detection, in particular to a pipe network weld flaw detection defect recognition method and system, comprising: acquiring a pipe network weld initial radiographic image, extracting a global feature atlas through a first deep convolution network, and decoding to generate a defect prediction confidence map; extracting a weld key geometric structure, and constructing a geometric prior weight map; applying Bayesian variational inference to the network, statistically dispersing the results of multiple random forward propagation, representing cognitive uncertainty and generating an uncertainty map; pixel-level weighted fusion of the confidence map, the uncertainty map and the geometric prior weight map to obtain a probability heat map, based on which a composite sampling guide vector field is constructed, sampling points are arranged along the vector field, and a multi-angle scanning imaging system is controlled to collect high-resolution local projection data; three-dimensional reconstruction of the projection data to obtain local features, fusion of the local features and global features through a cross-attention module to generate an enhanced defect representation, and output of the class, three-dimensional spatial position and size of the weld defect.

The application discloses a kind of respiratory support equipment sensor self-calibration method, comprising the following steps: S1, first sensor obtains first oxygen concentration N1, second sensor obtains second oxygen concentration N2;S2, the difference of first oxygen concentration N1 and second oxygen concentration N2 is calculated, and it is judged: if |N1-N2|<K, then execute step S3, if |N1-N2|>K, then execute step S4, K value is set threshold value;S3, obtain initial average concentration and the initial average concentration N0 as output concentration;S4, obtain several oxygen concentrations N1, N2, N3......Ni corresponding to several sensors, and carry out data fitting to it, obtain concentration optimal solution Ny, and the concentration optimal solution Ny is used as output concentration;S5, select the two sensors of measured oxygen concentration closest to optimal solution Ny as working sensor.The application solves the problem of low parameter accuracy caused by the error of sensor measured data or the error of sensor itself.

The utility model relates to the technical field of motor detection, in particular to motor gear run-out detection equipment. Comprising a rack and a pair of conveying assemblies at the upper end, the upper end of each pair of conveying assemblies is provided with a detection station used for containing a motor to be detected, the two ends of each conveying assembly are provided with linear scanning lasers fixedly connected to the rack, the tail end of each conveying assembly is provided with a grabbing assembly used for clamping and discharging, and the motors are transplanted to the detection stations. A contact pin is arranged in the jig, a product is electrified to rotate after being placed, and rotation of the gear can be controlled through contact between the contact pin and the motor gear, so that preparation is made for subsequent detection. According to the motor gear detection device, the motor gears on the two detection stations can be detected at the same time or in sequence, the detection efficiency is remarkably improved, the to-be-detected motor can be rapidly and accurately conveyed to the detection stations through the design of the conveying assembly, and the waiting time is shortened.

The invention belongs to the technical field of clothes treatment equipment, and discloses a control method and a detection device of clothes treatment equipment and the clothes treatment equipment. The control method of the clothes processing equipment comprises the steps that after the clothes processing equipment is started, a detection signal is obtained, the detection signal is used for indicating whether clothes in the clothes processing equipment are clamped or not, and when the detection signal indicates that the clothes in the clothes processing equipment are clamped, a barrel of the clothes processing equipment is controlled to change the rotating direction. By means of the control method of the clothes processing equipment, the problems that clothes are damaged and even the window pad is torn when the clothes processing equipment operates due to the fact that the clothes are clamped between the window pad and the clothes putting opening structural part can be prevented.

The present application relates to the technical field of air volume detection, and particularly relates to a multi-hole uniform-speed air volume detection device, which comprises a shell, one side of the shell is fixedly connected with an air inlet flange, the other side of the shell is fixedly connected with an air outlet flange, the inner wall of the shell is fixedly installed with a partition plate on the side close to the air inlet flange, equidistant through holes are formed in the partition plate in a ring shape, an air volume centering mechanism is arranged on the inner side of the partition plate, and an air volume uniformity detection mechanism is arranged on the inner side of the air volume centering mechanism. The air volume centering mechanism and the air volume uniformity detection mechanism are used to effectively detect the air volume uniformity of the air outlet, the elliptical movable plate is used to extrude the annular movable sleeve under different air volume, so as to drive the conductive contact piece in the arc-shaped sliding block to contact and electrify the conductive block, the accurate judgment of the air volume uniformity is realized according to whether the conductive block is electrified under the same gear, and the accurate detection of the air volume uniformity is realized.

The application relates to the technical field of blood drug concentration detection, and discloses a blood drug concentration analysis method based on mass spectrometric detection, which comprises the following steps: adopting microfluidic technology in combination with solid-phase extraction to pretreat a blood sample to obtain a concentrated solution, so as to remove interfering components and concentrate target drug molecules; according to the physicochemical properties of the target drug molecules, the concentrated solution is selected to flow through a biosensor or is directly introduced into a chromatographic unit, and the target drug molecules in the liquid phase are converted into gas-phase ions when flowing through the biosensor; chromatography-mass spectrometry is adopted to detect the gas-phase ions or the concentrated solution, so as to obtain mass spectrum data; a machine learning model is used to analyze the spectrum data, to identify the drug types and calculate the concentration of the target drug molecules, and to generate an analysis report. The method is suitable for target drugs with different physicochemical properties, simplifies the detection process, and improves the applicability and accuracy of detection.

This invention relates to the field of testing equipment technology, specifically a durability testing fixture for motorcycle fuel tank lock discs. It includes a mounting frame, a testing box, a fixed base, and a lock disc body. The testing box has an oil port, and a pressure sensor is installed inside. A proximity switch is installed at the farthest point of the lock tongue's sliding distance. A pressurizing assembly is provided on the testing box, and a piston rod is mounted on the pressurizing assembly. A motor is mounted on the mounting frame, and a push rod is slidably connected to the mounting frame. The motor drives the push rod to push the lock disc body towards the oil port. The piston rod applies gas pressure to the testing box using the rotational force of the lock disc body, and the pressure sensor detects the gas pressure inside the testing box. This avoids the problem of inconsistent testing pressure leading to inaccurate test data in motorcycle fuel tank lock disc sealing performance testing, ensuring the reliability of the test data from this motorcycle fuel tank lock disc durability testing fixture.

The application discloses an intelligent imaging generation system and method, which realizes closed-loop control of spraying quality by real-time linkage adjustment of spraying mechanical arm and imaging equipment parameters through a dynamic parameter adjustment module, and combines a defect prediction and optimization decision module and a multi-modal process knowledge base. The system integrates a high-resolution visual sensor, a capacitive thickness detector and a temperature and humidity sensor, fuses multi-source data by using a Kalman filtering algorithm, and dynamically adjusts the speed of the mechanical arm, the nozzle pressure and the imaging gain coefficient. The defect prediction module simulates coating defect morphology based on a physically constrained generative adversarial network and generates a process optimization instruction set through reinforcement learning. The multi-modal process knowledge base stores an associated model of material characteristics, environmental data and defect patterns, supports incremental learning and historical data decay update. Through dynamic parameter collaborative optimization, defect prediction prepositioning and multi-modal data fusion, the spraying quality detection efficiency and coating consistency are improved, and the rework rate is reduced.

The application discloses a YOLO-based avalanche monitoring self-improvement system and method, and belongs to the technical field of intelligent geological disaster monitoring. The method collects multi-source image data through a UAV and satellite remote sensing, and realizes initial avalanche detection through YOLO. A time sequence consistency verification mechanism is used to screen high-confidence pseudo labels, and a dynamic time attenuation weight strategy is combined to construct an enhanced training set. When the pseudo labels accumulate or the performance decreases, model retraining is automatically triggered, performance evaluation is used to decide model updating or rollback, and a self-learning closed loop is formed. The application innovatively deeply integrates YOLO detection, automatic pseudo label distillation, physical parameter inversion and edge end spread deduction, realizes the whole-chain self-improvement of detection-deduction-warning-optimization, continuously improves the detection accuracy, reduces the artificial labeling amount, supports complex terrain and extreme environments such as strong reflection and dynamic blur, and reduces the early warning delay to the millisecond level.

A kind of double half-ring type anti-settling buried protection device, including buried cylinder, buried upper cover and two clamps;The buried cylinder is the cylinder that is permeable up and down, the upper end of the buried cylinder is integrally formed with the detection cylinder section for built-in installation and protection gas detector;The buried upper cover can be detachably installed at the upper end of the detection cylinder section, for closing the upper port of the detection cylinder section, so as to protect gas detector when burying;Two clamps are detachably connected together and tightly embrace on the outer circumference of the detection cylinder section;The outer circumference of the clamp is integrally formed with anti-settling half-ring, and two anti-settling half-rings are synthesized into whole circular anti-settling ring.The buried cylinder of the utility model can effectively increase the contact reliability with the earth by two anti-settling half-rings, so that the buried cylinder can be stably fixed in the earth, the pressure capacity of buried protection device is enhanced, and settlement is avoided, and the design of two clamps can effectively reduce the installation difficulty of the whole device.

This utility model discloses a titanium rod flatness detection platform, relating to the field of titanium rod detection technology. The utility model includes a workbench, with a titanium rod body mounted on top of the workbench. A detection mechanism is mounted on the surface of the titanium rod body, comprising an airbag disposed on the surface of the titanium rod body, an annular fixing ring fixedly connected to the surface of the airbag, and a detection tube connected to the front side of the airbag. By combining an airbag with a pressure sensor, this utility model enables real-time and continuous detection of the flatness of the titanium rod surface, avoiding the inefficiency of traditional point-by-point measurement methods, significantly improving detection efficiency and automation. Through the cooperation of a motor, threaded rod, and threaded sleeve in the moving mechanism, the detection mechanism moves smoothly and at a uniform speed along the titanium rod axis, ensuring the continuity and consistency of data acquisition and improving the accuracy and reliability of the detection results.

The utility model discloses a detachable anti-blocking liquid level meter, which relates to the technical field of liquid level sensors and comprises a connecting cylinder, the outer surface of the connecting cylinder is in threaded connection with a protective cover, the bottom surface of the protective cover is provided with a first liquid inlet and four second liquid inlets for liquid to enter and exit, and a filter screen is arranged in the protective cover. The inner wall of the connecting cylinder is in threaded connection with a sealing block. According to the liquid level sensor, the filter screen is used for filtering liquid entering the liquid level sensor through the liquid inlet hole, so that impurities in the liquid are prevented from obstructing a detection area of a detection element of the liquid level sensor, the possibility of a detection blind area is reduced, and the detection precision is ensured; the liquid level sensor is simple in structure and convenient to use, the speed of liquid entering the liquid level sensor can be increased, the detection efficiency of the liquid level sensor is improved, the detection end of the liquid level sensor is protected when the liquid level sensor is not used, the influence of external dust and other impurities on a detection element is avoided, and meanwhile the liquid level sensor can be conveniently disassembled and overhauled.

This invention relates to the field of blade inspection technology, and more particularly to a blade surface defect inspection device for unmanned aerial vehicles (UAVs). The device includes an inspection machine, a placement plate fixedly mounted on the inner bottom surface of the inspection machine, and a shooting and inspection mechanism disposed on the inner top surface of the inspection machine. A placement concave surface is formed in the middle of the upper surface of the placement plate. Side openings are formed on both sides of the upper surface of the placement plate near the placement concave surface, and a front opening is formed on the upper surface of the placement plate near the front of the placement concave surface. Concave surfaces are formed on the sides of the two side openings that are far apart from each other. This invention enables automated blade flipping without manual intervention, effectively improving inspection efficiency and reducing labor intensity. The unobstructed structure of the inspection optical path avoids affecting the telecentric lens imaging, ensuring inspection accuracy. Simultaneously, it avoids blade surface contamination and secondary damage caused by manual flipping, improving inspection quality and product yield.

The utility model relates to automatic detection technical field and propose a kind of wall-climbing robot, comprising: at least two main bodies, the side of mutually approaching of adjacent two main bodies is hinged connection;Several magnetic roller assemblies, the side of mutually moving away of at least two main bodies is set to rotate, for magnetically adsorbed on the surface of measured object, and rolling on the surface of measured object, the advancing direction of several magnetic roller assemblies is parallel with the hinge axis of adjacent two main bodies;At least two adjusting assemblies, one-to-one corresponding setting on the at least two main bodies, and located the front end of main body along advancing direction;At least two detection units, one-to-one corresponding setting in the at least two adjusting assemblies, for when adjacent two main bodies mutually rotate to adapt to the curvature of measured object, each adjusting assembly always keeps corresponding detection unit facing the surface of measured object.

This invention relates to the field of nondestructive testing (NDT) technology, solving the technical problems of large measurement errors and insufficient detection accuracy in existing technologies under lift-off fluctuations caused by changes in coating thickness. Specifically, it relates to a pulsed eddy current lift-off and thickness decoupling method based on the characteristic quantity of the frequency domain amplitude centroid and the time domain ratio. Based on a pulsed eddy current analytical model, the pipe under test with a coating layer is equivalent to a three-layer flat plate structure, and the time-domain induced voltage signal of the pipe is obtained through a detection platform. A fast Fourier transform is performed on the time-domain induced voltage signal to obtain the corresponding frequency-domain induced voltage spectrum, and the frequency-domain amplitude centroid used to characterize the lift-off height is calculated based on the frequency-domain induced voltage spectrum. This invention uses the raw induced voltage signal as the analysis object, eliminating the need for complex preprocessing. The signal processing flow is simple and efficient, reducing computational complexity while ensuring detection accuracy, thus improving detection efficiency and engineering application feasibility.

This invention relates to a centerless grinding wheel wear correction device, comprising a worktable on which a centerless grinding machine is mounted. The centerless grinding machine includes a grinding wheel and a guide wheel coaxially arranged on the grinding wheel. A support for placing a workpiece is provided between the grinding wheel and the guide wheel. The workpiece can be placed on the support along the axial direction of the grinding wheel. Both the grinding wheel and the guide wheel can reciprocate toward the workpiece. A laser rangefinder, moving synchronously with the grinding wheel, is provided on one side of the grinding wheel. The distance between the measuring head of the laser rangefinder and the axis of the grinding wheel remains constant. This invention features the ability to correct its own position in real time during the grinding process, maintaining close proximity to the workpiece during grinding, ensuring grinding accuracy, and ensuring accurate detection of the grinding wheel position.

The utility model relates to the technical field of defect detection, in particular to a tinned copper wire surface defect detection device which comprises a supporting seat, a control box, a detection box, four mounting seats, a wire guide wheel, a controller and an industrial display screen, the control box is fixedly connected to the supporting seat, the detection box is fixedly connected to the upper portion of the supporting seat, and the four mounting seats are fixedly connected to the detection box. A wire guide wheel is rotatably arranged on the mounting seat, a controller is mounted on the detection box, an industrial display screen is mounted on the controller, and the controller is electrically connected with the industrial display screen. The tinned copper wire extrudes the arc-shaped clamping plate to move outwards, meanwhile, the arc-shaped clamping plate drives the threaded rod and the two guide rods on the arc-shaped clamping plate to move outwards, and the elastic piece is compressed and rapidly rebounds, so that the elastic piece drives the threaded rod, the two guide rods and the arc-shaped clamping plate to move inwards, and the tinned copper wire is limited and fixed; therefore, the tinned copper wire can be prevented from being broken due to uneven tension, and the quality of the tinned copper wire is prevented from being affected.

The invention relates to the technical field of contact pin type contour measurement sensor measurement, in particular to an automatic compensation mechanism and method for a contact pin type contour measurement sensor. The automatic compensation mechanism comprises a measuring rod, a measuring needle is arranged at the front end of the measuring rod, the tail end of the measuring rod is connected with a main shaft through an adapter block, the side, away from the adapter block, of the main shaft is connected with a first rotation center, the main shaft can rotate around the first rotation center, and the first rotation center is configured to be capable of translating in the measurement advancing direction. The mechanical compensation assembly comprises a second rotation center and a connecting rod, one end of the connecting rod is hinged to the spindle, and the other end of the connecting rod is hinged to the second rotation center. The invention aims to solve the problem that the measurement precision is reduced due to measurement errors introduced when a traditional contact pin type contour measurement sensor performs wide-range measurement.

The utility model discloses a kind of hall current sensor and hall current detection system, it is related to current sensor technical field, wherein, hall current sensor includes busbar and hall module, busbar is equipped with through-hole;Hall module is inserted into through-hole, hall module includes insulating shell and hall chip, insulating shell is equipped with mounting hole, hall chip is installed in mounting hole, and the hall pin of hall chip is exposed from mounting hole, to be electrically connected with PCB board, insulating shell is used to be fixedly connected with PCB board.The utility model provides technical scheme, improves the protection to hall chip, improves the detection accuracy of hall current sensor.

The invention belongs to the technical field of valves, and particularly discloses a test method and a detection tool of an electromagnetic valve. The testing method comprises the following steps: assembling the two-way valve module; the two-way valve module is installed on the first test tool, so that the two-way valve module and the first test tool are matched to form a first airtight test cavity comprising a valve inner cavity, and the first airtight test cavity is separated from the two-way valve port through the two-way valve element; testing the air tightness of the first air tightness test cavity; the two-way valve module, the one-way valve module and the electromagnetic mechanism are assembled to form an electromagnetic valve; the electromagnetic valve is installed on a second testing tool, so that a second airtight testing cavity is defined by the valve port frame, the electromagnetic mechanism and the second testing tool; the second valve core is separated from the second valve port, so that the first valve port, the valve inner cavity, the second valve port and the external environment are communicated; and testing the air tightness of the second air tightness test cavity. According to the invention, the test efficiency and the test precision of the solenoid valve which comprises the valve port frame and has two seals can be improved, and the processing production efficiency of the solenoid valve is improved.

The application relates to a label cutting mechanism and relates to the technical field of label cutting, which comprises a workbench, a displacement sensor, a start-stop roller and a cutter are sequentially arranged on the workbench along the moving direction of a profile strip, the displacement sensor is used for detecting the displacement distance of the profile strip, two start-stop rollers are rotationally arranged on the workbench and jointly clamp the profile strip, a driving assembly for driving the start-stop roller to rotate is arranged on the workbench, the displacement sensor is electrically connected with the driving assembly, and the cutter is used for cutting the profile strip. The application has the effects of avoiding cutting deviation caused by continuous movement of the profile strip as much as possible and improving cutting precision.