31results about How to "Easy detection" patented technology

The invention discloses a road crack segmentation method and device based on deep learning, electronic equipment and a program product. According to the method, two collaborative and functional complementary processing paths are adopted to perform parallel processing on a to-be-segmented image so as to obtain corresponding feature information: on one hand, the to-be-segmented image is converted into a feature sequence containing spatial position information, and global semantic modeling is performed on the feature sequence; global semantic features representing the overall shape of the crack and long-range semantic dependence are obtained; and on the other hand, local texture and edge detail information of the crack is directly extracted from the to-be-segmented image, and detail enhancement features are obtained. Thirdly, fusing the global semantic features and the detail enhancement features to obtain target fusion features considering crack positioning, connectivity and boundary and texture expression; according to the segmentation result output based on the target fusion features, even tiny cracks can be effectively depicted, and then the continuity, boundary definition and robustness of tiny crack segmentation under the complex road background can be improved.

This invention provides a method for hypertension risk assessment, relating to the field of epigenetic detection technology. It includes: performing event alignment and residual modeling on a qualified signal set to establish a base probability at the locus level and forming baseline features through neighborhood consistency screening; constructing a tunneling sensitization model and contextual attention, fusing discriminative and generative evidence to obtain enhanced features; quantifying IGF2BP3 and aligning and fusing it with the enhanced features; constructing an IGF2BP3-mediated metabolic network based on this, performing time-series modeling and stability assessment, and extracting final-state features; fusing the final-state risk vector with multi-gene scores to complete adaptive grading and compliant report generation. This method is robust, interpretable, and easy to deploy.

The utility model relates to technical field of hardware circuit board circuit structure, concretely relates to a MOS pipe short circuit identification protection circuit, and technical solution main points include the identification circuit between input and the source electrode s of MOS pipe Q3 is connected, identification circuit protection resistance RS1, resistance R1, resistance R2, capacitor C1, triode Q2 and singlechip, the series connection between input and MOS pipe Q1 on resistance RS1, triode Q2's emitting electrode connects input, capacitor C2 one end and resistance R1 one end, triode Q2's base connects capacitor C2 other end, resistance R1 other end and resistance R2 one end, resistance R2 other end connects the joint between resistance RS1 and MOS pipe Q3, triode Q2's collector connects singlechip one pin, the utility model discloses through identification circuit, carries out short circuit detection and identification to MOS pipe, in order to facilitate circuit protection.

This application discloses a high-precision microwave frequency measurement method and system based on continuous-time crystal phase transitions, belonging to the field of quantum sensing technology. This method utilizes the characteristic of the Rydberg atom system at the critical point of a continuous-time crystal phase transition where the response slope of the detected light transmission signal to the microwave frequency is significantly enhanced, breaking through the resolution limit of traditional linear responses. The system includes a quantum sensing unit, an optical excitation and detection module, a microwave modulation and scanning module, an auxiliary radio frequency field module, and a signal processing and control center. By precisely adjusting the parameters, the system is driven to the vicinity of the critical point, the critical frequency is identified, and its high response slope is used to achieve precise frequency measurement. This invention employs a two-stage measurement process, balancing wide dynamic range and high precision, and can be flexibly tuned to adapt to different frequency bands, possessing broad application prospects, especially in microwave communication, frequency metrology, and other fields with significant technical value.

This utility model provides a hydraulic locking device for positioning heavy cargo on ships, belonging to the field of cargo positioning and locking technology. It includes two fixed seats; each fixed seat is secured to the ship by four fixing screws. A base block slides on the fixed seat, and a wooden compression block is provided inside the base block. A first hydraulic cylinder on the fixed seat drives the base block to move. A second hydraulic cylinder is hinged to the base block, and its extended end is connected to a connecting seat. Steel wire ropes are connected to the front and rear connecting seats respectively. A guide rod is welded to the base block, and a hexagonal adjustment groove is provided at the adjustment point of the fixing screw. An auxiliary groove is opened on the fixed seat to hide the fixing screw. This device achieves double locking through the compression block and steel wire rope, improving the fixing stability. The wooden compression block prevents damage to the cargo, the guide rod ensures structural stability, and the auxiliary groove facilitates timely detection of screw loosening, solving the problems of poor fixing effect, fragile cargo, and difficulty in detecting component loosening in existing devices.

This application discloses a lidar, a method, apparatus, and medium for controlling the detection area, relating to the field of lidar technology. In this lidar, both the laser and detector are mounted on a moving module. When the moving module moves, it moves the laser and detector, causing changes in the direction of the laser's emitted light and the detector's receiving field of view. This means the detection area can be adjusted, improving the lidar's resolution when the detection area is small. Secondly, because the direction of the laser's emitted light can be moved, an area can be scanned by changing the direction of the emitted light. Therefore, fewer lasers can be used when detecting target objects, reducing costs. Furthermore, by using a collimation module to collimate the diverging light and a focusing module to focus the detection beam reflected back from the target object, detection of distant objects is achieved.

The utility model discloses a false tooth crack detection device, which particularly relates to the technical field of false tooth production and comprises a base, a support frame fixedly connected to the top end of the base, an ultrasonic flaw detector mounted at the top end of the base, a detection head mounted at one end of the ultrasonic flaw detector, an adjusting mechanism mounted on the inner side of the support frame, and a limiting component mounted at the top end of the base. The limiting assembly comprises a first variable frequency motor, the first variable frequency motor is installed in the base, the output end of the first variable frequency motor is fixedly connected with a fixing frame, and a second variable frequency motor is installed in the fixing frame. Therefore, the detection head can conveniently detect the false teeth from multiple angles, the influence of human factors on the detection result is reduced, meanwhile, the detection requirements of the false teeth of different shapes and sizes can be met, and the detection efficiency and flexibility can be improved.

The utility model relates to a radiology atlas atlantoaxial joint shooting auxiliary device relates to medical auxiliary equipment technical field, including head fixing mechanism, support mechanism, hanged connecting part, height adjusting mechanism and angle adjusting mechanism, head fixing mechanism is connected support mechanism through hinged shaft, support mechanism right side is connected with hanged connecting part, and hanged connecting part connects flat panel detector. The utility model has the advantages of solving the problem of low examination efficiency when the atlas atlantoaxial joint is examined in hospital, and the angle of the head of the person being shot is controlled remotely according to the shooting needs in the DR shooting with the device, which solves the problem of atlas atlantoaxial joint shooting difficulty.

This invention discloses a pyrimethanil hapten, an artificial antigen, and their preparation methods and applications. The structural formula of the pyrimethanil hapten is shown below. The arm introduced in this invention not only possesses an active group but also fully retains the benzene ring and dimethylpyrimidine ring structure of the target analyte, enhancing the recognition site. The pyrimethanil artificial antigen and monoclonal antibody of this invention exhibit high specificity for ELISA detection, with an IC50 rating of [missing information]. 50 The value is 1.97 μg / L, which is better than existing monoclonal antibodies. It can be used in colloidal gold immunochromatography to rapidly and conveniently detect pyrimethanil. The colloidal gold immunochromatographic test strip prepared in this invention has a detection sensitivity of 10 μg / L for pyrimethanil.

The invention discloses a nonmetal pipeline detection positioning device, method and system, and the positioning device integrates a sound generation device, a sound pickup, a main controller and the like through a detection box body, and an operator can carry one detection box body to carry out the detection work of a nonmetal pipeline. The sound generating device and the sound pick-up are used in cooperation, the position of the non-metal pipeline can be accurately determined by emitting the sound with the specific frequency and receiving the echo generated after the sound is transmitted in the non-metal pipeline, and the mode based on sound transmission is not limited by the non-conductive and non-magnetic characteristics of the non-metal pipeline; and the problem of non-metal pipeline detection can be effectively solved. The display device is installed on the detection box body and can display the position information of the nonmetal pipeline in real time. The main controller accurately analyzes and processes sound signals sent by the sound generating device and echo signals received by the sound pick-up, specific signals related to the non-metal pipeline are extracted, and the detection accuracy is improved.

The application discloses a cold atom gravity measurement system and method based on a planar magnetic well and a mirror surface atom chip. In view of the deficiencies of the existing reflection type atom chip in the aspects of integration, energy consumption and atom control efficiency, the application introduces a planar magnetic well and a mirror surface atom chip, effectively reduces the system manufacturing cost, improves the space utilization efficiency, optimizes the chip energy consumption structure, and significantly enhances the efficiency and purity of atom capture. The system has significant advantages in the aspects of atom control performance and integrated design, specifically, high-efficiency atom cooling and capturing capacity, low power consumption, low noise, good detection and coupling characteristics, and excellent scalability, and provides a high-precision solution with a more compact structure, more stable performance and suitability for practical application for cold atom gravity measurement.

The invention discloses a building steel structure welding seam ultrasonic nondestructive testing flaw detection method and system, and belongs to the technical field of welding seam detection.The method comprises the steps that welding seam surface laser point cloud data is obtained, the local normal direction is calculated, and the inclination angle of a probe is converted; extracting a noise amplitude sequence in a non-welding area, and constructing a noise statistical table; driving the ultrasonic array probe to respectively generate a full-matrix echo data set and a plane wave echo data set according to the scanning attitude table; mapping the image into a full-focus image and a plane wave superposition image, and calculating amplitude difference to generate a fusion weight map; and generating a fusion image based on the fusion weight map, performing region segmentation by using a noise statistical table, and extracting a defect boundary coordinate table. According to the method, the technical scheme of guiding the posture of the probe through the laser point cloud, dual-mode imaging fusion and self-adaptive noise segmentation is adopted, and high-precision and automatic recognition and objective quantitative evaluation of the internal defects of the welding seam can be achieved.

The application belongs to the field of molecular imprinting polymer separation materials, and provides an amino acid-based molecular imprinting polymer / quantum composite material, a preparation method and application thereof, and comprises the following steps: mixing an inorganic quantum dot material dispersion liquid, two kinds of amino acid template molecules, 3-aminopropyl triethoxysilane, tetraethyl orthosilicate and a stabilizer, then adding ammonia water and deionized water, uniformly dispersing, and reacting at room temperature to obtain a polymerization product; and after elution and post-treatment of the polymerization product, the template molecules are removed to obtain the amino acid-based molecular imprinting polymer / quantum composite material. The composite material can be applied to the separation and identification of various amino acids, and all have high separation and identification performance, so that one material can effectively separate and identify various target molecules, and the concentration of the amino acid molecules can be quantitatively analyzed.

This invention provides a rock fissure scanning and detection device and method for geotechnical engineering. The scanning and detection device includes a first cylinder with four square holes arranged in a circular array on its circumferential surface. Four sets of sealing components are arranged inside the first cylinder, corresponding to the square holes. A second power mechanism and a moving mechanism are also located inside the first cylinder. A push-out component and a camera are located on the left side of the moving mechanism. The moving mechanism is connected to the camera via the push-out component. The second power mechanism provides power to the push-out component, which is arranged in four sets, corresponding to the sealing components. This invention allows for detection of different locations of the detection holes with a single installation, reducing the operational difficulty for detection personnel and improving detection efficiency. Furthermore, the camera is protected when the invention is not in use.

The application discloses an elastic cantilever beam, an optical fiber acceleration sensing device and system, and belongs to the technical field of optical fiber sensing. The elastic cantilever beam comprises a U-shaped beam body structure, the diameters of beam arms of the beam body structure gradually increase along the direction of an opening end of the beam body structure; a hollow part is arranged between the beam arms, the width of the hollow part gradually increases along the direction of the opening end of the beam body, and a plurality of beam body structures are arranged in parallel and connected through connecting parts to form a multi-period folding structure. The elastic cantilever beam provided by the application is used for acceleration signal sensing through a design of a width-gradually-changing multi-period folding cantilever beam. Under the same size, the deformation amount of the cantilever beam structure can be significantly increased compared with a conventional elastic cantilever beam when force is borne, so that the acceleration signal detection sensitivity of the sensing structure can be improved, and high-sensitivity and low-noise-level acceleration signal detection can be realized.

The application belongs to the field of infrared small target detection, and particularly relates to a method for optimizing a spectrum of a space-based infrared system for detecting multiple types of targets, calculating a generalized signal-to-clutter ratio of each type of target, substituting generalized signal-to-clutter ratios of n types of targets into an optimization function, and determining a starting wavelength λ start of a detection spectrum and a spectrum width Δλ through spectrum optimization. The application proposes a concept of generalized signal-to-clutter ratio, introduces a target speed parameter in the calculation of the signal-to-clutter ratio, and compared with a traditional signal-to-clutter ratio, the calculation result of the generalized signal-to-clutter ratio can more accurately reflect the influence of target motion characteristics on detection performance, so that the application can consider the detection performance evaluation of fast-moving targets and slow-moving targets.

The invention provides a method and system for detecting the position of a low-resistance abnormal body in a mine working face, and belongs to the technical field of mine detection.The method comprises the steps that a power-on wire is arranged on a roadway on one side of the mine working face, and a receiving device is arranged on a roadway on the other side of the mine working face to receive induced electromotive force excited when the power-on wire is powered off; when the change rate of the induced electromotive force in the early stage is smaller than the threshold value and is higher than the threshold value after the threshold value in the late stage, the low-resistance anomalous body is located outside the receiving point; if the induced electromotive force excited by the transient electromagnetic field and received by the receiving point does not change obviously in the early stage and the late stage, the low-resistance anomalous body is located on the outer side of the electrified wire; and when the early change rate of the induced electromotive force excited by the transient electromagnetic field received by the receiving point is large and is higher than the threshold value after the later time threshold value, the anomalous body is located between transmitting and receiving. The method can detect the position of the low-resistance abnormal body in the well.

This invention relates to an array ultrasonic testing probe and its testing method for small-diameter hollow shafts. It is used for non-destructive testing of internal channel defects in objects such as small-diameter hollow shafts (inner diameter ≤ 30mm) (e.g., hollow railway axles, hollow aircraft axles, etc.). The testing probe extends into the internal channel (11) of the object being tested (1) for inspection. The testing probe includes a probe base, an acoustic matching device, and a composite cable. The probe base is configured as a cylindrical structure adapted to the hollow inner diameter of the object being tested. This invention incorporates an acoustic matching device with an elastic capsule structure. The pressure of the coupling agent within the elastic capsule is adjusted by a coupling agent supply device to regulate the probe's outer diameter.

The invention discloses a method for establishing a rotating target detection model applied to detecting upper and lower bed edges of a baby crib. The method comprises the following steps: S10, constructing a training data set: collecting pictures of the baby crib and marking four vertex coordinates of the upper and lower bed edges; performing data enhancement on the picture: randomly adding articles or figures in a handrail area of the baby crib for shielding, performing random graying on the picture to simulate an infrared scene, randomly adjusting the brightness, contrast and saturation of the picture to simulate different illumination conditions, randomly cutting an image area based on a target size proportion, and filling a boundary with a constant value, and finally, zooming the image to a preset resolution. S20, performing feature extraction and fusion; s30, obtaining prediction output: inputting the fusion feature into a detection head, wherein the detection head comprises a classification branch and a regression branch; s40, processing real data; s50, various losses are calculated; and S60, optimizing and evaluating the model.

The application discloses an underground cavity detector and relates to the technical field of detection devices.The underground cavity detector comprises a detector cabin I and a detector cabin II, the detector cabin I and the detector cabin II are rotationally connected, the outer end of the detector cabin I is fixedly connected with a connector, a connector platform is connected with the connector, four traction belts are arranged on the connector platform, the four traction belts are arranged at the four corners of the connector platform, two supporting cylinders are arranged above the cavity, the top of the four traction belts is supported by the two supporting cylinders, anti-shaking devices are arranged outside the traction belts, and the multiple anti-shaking devices are arranged on the opposite sides of the traction belts.The underground cavity detector optimizes the traditional cavity testing device, the improved traction belts and the anti-shaking devices are used, the detector can keep a stable spatial posture when the detector is deeply inserted into the cavity, the subsequent detection of the three-dimensional spatial scale form is facilitated, and the scanning result is more accurate.

The invention relates to the technical field of reagent detection, and discloses a chicken mycoplasma synoviae plate agglutination detection system as well as a detection method and application thereof. The detection sensitivity is improved, and the revolutionary breakthrough of the detection sensitivity is realized by constructing a'biotinylated recombinant antigen-streptavidin-color microsphere 'cascade signal amplification system; the detection specificity is high, cross misjudgment is effectively avoided, the high-purity and high-specificity genetic engineering recombinant p80 / vlhA fusion protein is adopted as a core recognition element, and interference of non-target impure protein is completely eradicated from an antigen source; the result interpretation is visual and objective, and the detection result is presented in the form of red particles or flocculent agglutination which can be clearly seen by naked eyes, and is clearly compared with a uniform red opacifying background.

The application discloses a concrete defect detection method, a detection device, an electronic device and a storage medium. The concrete defect detection method comprises the following steps: in response to a received detection instruction, acquiring a current concrete image of concrete, wherein the detection instruction is used for instructing to perform defect detection on the concrete; inputting the current concrete image into a target defect detection model to obtain a corresponding defect detection result, wherein the target defect detection model is obtained based on a single-step multi-frame target detection model and a texture enhancement model, and the texture enhancement model is used for enhancing and extracting texture features of the current concrete image. The method realizes defect detection on the concrete by using the target defect detection model constructed based on the single-step multi-frame target detection model and the texture enhancement model, the detection time is short, and the detection efficiency and detection accuracy of the defect detection on the concrete are improved.

The utility model discloses a kind of tunnel vault detection devices, it is related to tunnel detection field, including base;Mounting bracket, mounting bracket is set on base;Detection structure, detection structure is set on mounting bracket, and detection structure is used to detect tunnel vault;Movable structure, movable structure is set on mounting bracket, and movable structure is used to drive detection structure to move;The detection device is stretched respectively to two movable rods on mounting rod, drives ultrasonic detector to move upwards, so that ultrasonic detector is close to tunnel vault, and then rotates and tight positioning bolt, makes its one end sliding and inserts into corresponding positioning hole, limits and fixes to movable rod, and rotates screw rod, so that threaded sleeve drives connecting column to extrude movable groove inner wall, pushes connecting rod and mounting rod to rotate, movable rod and ultrasonic detector rotate together with mounting rod, adjust the position of ultrasonic detector, it is convenient to detect multiple positions of tunnel vault.

The invention relates to a wheel bearing assembly, in particular a wheel bearing assembly (1) comprising a wheel hub (10) with an inner toothing (12), a wheel bearing (20) arranged at the wheel hub, a constant-velocity joint (30) with a journal (32), wherein the journal has an outer toothing (33) which is in engagement with the inner toothing (12) of the wheel hub for torque transmission, and a clamping device (40) via which the wheel hub including the wheel bearing is clamped in this way axially against the constant-velocity joint such that a bearing inner ring (21) of the wheel bearing (20) is pressed against an abutment shoulder (34) of the constant-velocity joint (30). Between the bearing inner ring (21) and the abutment shoulder (34) there is arranged a metallic, uncoated and friction-enhanced friction ring (50) for which the coefficient of sliding friction against the contact of the bearing inner ring (21) and the abutment shoulder (34) is at least 80% of the coefficient of static friction, respectively.

The utility model discloses a multifunctional archaeological tool, which relates to the technical field of archaeological excavation equipment and comprises a tool shell, a first sliding chute and a second sliding chute are arranged on the tool shell, a drill bit used for scraping small gaps is connected in the first sliding chute in a sliding manner, and a measuring scale used for measuring is connected in the second sliding chute in a sliding manner. A fixing shaft is arranged in the tool shell, a cleaning brush used for cleaning is rotatably connected to the fixing shaft, a sliding block is fixedly connected to the drill bit, the sliding block is slidably connected to the interior of the first sliding groove, a plurality of dust collectors used for absorbing dust are installed on the cleaning brush, and the rear portions of the dust collectors communicate with a dust storage device used for storing the dust; according to the utility model, parameters such as perimeter, length, width and the like of the remains can be measured through the measuring scale and the measuring tape, the surface of the remains can be cleaned and sampled through the cleaning brush and the dust collector, and meanwhile, the number of various tools carried at one time can be reduced, so that convenience is provided.

The utility model provides a kind of intelligent vibration sampler suitable for complex sea conditions of middle and shallow sea, it is related to sampling device technical field, to solve the problem that the existing vibration sampler cannot detect seabed condition in the process of sampler lowering when using due to complex seabed condition, it includes: base;The inside of the base is equipped with middle connector block;The camera is fixedly connected on the outer wall of the middle connector block of the base;Pressure sensor is fixedly connected on the outer wall of the middle connector block of the base;Attitude instrument is fixedly connected on the outer wall of the middle connector block of the base.External control terminal is connected with portable cable through junction box, can receive seabed environment image photographed by camera, pressure data detected by pressure sensor and attitude information fed back by attitude instrument in real time, and operator can intuitively understand the working condition of sampler under water and surrounding environment in safe position away from sampling site through external control terminal.

This invention discloses a low-altitude, multi-target, omnidirectional infrared detection device, comprising a top base and a transparent protective cover. The transparent protective cover is disposed at the bottom of the top base, and a detection component is disposed inside the transparent protective cover. The detection component includes a support rod, which is fixedly connected to the top base. A column is fixedly connected to the middle of the support rod, and a fixed base is fixedly connected to the bottom of the support rod. A first motor is installed on the top of the fixed base. This invention utilizes an outer wall cleaning ring to solve the problem of dust accumulation on the outside of the transparent protective cover obstructing the view, thus avoiding blind spots. An inner wall cleaning ring helps prevent fogging on the inner wall, which obstructs the view and affects the detection effect. A transmission cylinder drives an outer lifting ring to rise and fall, thereby adjusting the angle of the adjustable detection head. Multiple adjustable detection heads are provided to facilitate omnidirectional detection.

This invention relates to the field of detection system technology, and in particular to a surface thin film detection system for IML display devices. It utilizes inverse mapping of connected domains at the target level of an image pyramid to obtain the region of interest, locks the centroid of the defect based on the spatial moment ratio, extracts the second-order central moment, and constructs a topological inertia tensor covariance matrix to obtain the principal and secondary eigenvalues. This allows for comparison and decision-making regarding the equivalent inertial ellipse area, anisotropic topological density, and distribution eccentricity. This solves the problems of fragmented, missed detections of discrete defects and false detections caused by near-field dust. It achieves adaptive defect tilting posture rotation and bonding at the wrapping boundary, eliminates area calculation distortion, and precisely breaks discrete dust through a two-dimensional threshold. This system achieves high detection rate, low false detection rate, and microsecond-level online quality inspection with low computing power.

This invention discloses a positive control for mycoplasma detected by quantitative real-time PCR (qPCR) that can distinguish between positive control contamination and positive control contamination, along with its applications. The invention provides a positive control obtained by inserting an irrelevant sequence into a highly conserved region of mycoplasma. Using this positive control, an internal probe is designed to distinguish between positive samples and the positive control, avoiding potential cross-contamination and establishing a method for detecting mycoplasma that can distinguish between positive control contamination and positive control contamination. This method can determine the accuracy of qPCR results, eliminate interference from positive control contamination of the test sample, and is highly sensitive with a wide detection range. It can be used for detecting mycoplasma contamination in scientific research and the biopharmaceutical industry.

This invention relates to the field of quantum precision measurement technology, and in particular to a laser frequency stabilization device, method, and microwave measurement device based on an atomic receiver. The laser frequency stabilization device integrates an atomic gas cell and a laser transmission fiber, bonding the atomic gas cell to a glass substrate to form a frequency-stabilized optical path with the laser transmission fiber. This simultaneously locks the laser frequencies of the coupled laser and the probe laser, significantly reducing the size of the frequency-stabilized optical path and greatly improving its stability compared to existing laser frequency stabilization methods. The microwave measurement device employs a handheld U-shaped integrated atomic probe. This U-shaped atomic probe uses a three-port wavelength division multiplexer, eliminating the need for free-space optical path detection. Compared to the original linear atomic probe, this greatly improves the portability of the microwave measurement device.