734results about How to "Accurate detection" patented technology

This invention discloses a primer and probe set, a kit, and their applications for detecting Staphylococcus aureus L based on real-time fluorescence MIRA technology. The primer and probe set consists of single-stranded DNA sequences 1-3. Based on the aforementioned primer and probe set, this invention establishes and optimizes a real-time fluorescence MIRA detection method for Staphylococcus aureus L. Furthermore, the optimized real-time fluorescence MIRA method is innovatively combined with a simplified nucleic acid extraction method and a portable fluorescence detection device, significantly reducing extraction and time costs while enabling rapid on-site detection of the virus, making it particularly suitable for grassroots units and remote areas. In addition, the real-time fluorescence MIRA detection method for Staphylococcus aureus L established in this invention has advantages such as high specificity, high sensitivity, and simple operation. Moreover, the detection process does not require opening the lid, effectively avoiding aerosol contamination, providing an effective technical means for the differential diagnosis and rapid detection of Staphylococcus aureus L.

The utility model discloses an A / C swing head geometric accuracy detection device, and belongs to the technical field of A / C swing head geometric accuracy detection. An A / C swing head geometric accuracy detection device comprises a detection platform and a swing head assembly support, the swing head assembly support is provided with a bottom plate installed and connected to the detection platform and an installation vertical plate fixedly arranged on the bottom plate, and the installation vertical plate is provided with a detachable assembly adapter plate. The assembly adapter plate is provided with a mounting hole for assembling a to-be-detected swing head, the bottom plate is provided with adjusting assemblies capable of performing local top height fine adjustment on the swing head assembly support, and the adjusting assemblies are symmetrically distributed on the two sides of the mounting hole. The detection device can efficiently and accurately detect the geometric accuracy of the swing head.

The invention discloses a wafer defect detection method and system based on an attention guidance network, and belongs to the technical field of wafer defect detection, and the method comprises the following steps: 1, adjusting light supplement according to a detection demand, and then collecting a wafer image; 2, performing spectrum enhancement preprocessing on the acquired wafer image; and 3, extracting the features of the enhanced image through a multi-scale distributed feature extraction backbone network, and fusing the extracted features through an attention-guided feature pyramid network. Complex background interference of the wafer is effectively suppressed, and defect characteristics are remarkably enhanced; constructing a feature extraction mechanism capable of capturing local details and long-range context information at the same time; balanced and accurate detection of multi-scale defects is realized; the physical priori of the defect is embedded into the network in a learnable manner, so that the learning efficiency and generalization are improved; while ultrahigh precision is ensured, low model complexity is maintained, and the real-time requirement of a production line is met.

The invention discloses a deep sea cable fault accurate positioning method based on electromagnetic induction and transient characteristic analysis, and relates to deep sea electric power engineering. According to the technical scheme, the method comprises the steps of 1, signal excitation used for transmitting a signal source; 2, signal filtering is carried out to counteract geomagnetic background noise; 3, signal correction is carried out to solve the problems of modal aliasing and endpoint effect existing when a traditional EMD is used for processing complex signals; 4, signal feature extraction, wherein transient pulse features in the signals can be effectively enhanced; and step 5, fault positioning. The method is mainly used for non-intrusive fault detection of the power cable in the kilometer-level deep sea high-pressure environment, and high-precision fault point positioning is achieved.

The elevator control system can not only detect wheelchair users, but also more accurately detect wheelchair-equivalent users, including wheelchair users, thus improving convenience. The elevator control system has an operation control unit (21), an acceleration sensor (22), and an information processing unit (23). The operation control unit (21) has a main control device (5) and a door controller (13). The acceleration sensor (22) is installed in the car compartment (11). The acceleration sensor (22) detects the acceleration of the car compartment (11) relative to the car frame (10) and sends an acceleration detection signal. The information processing unit (23) receives the acceleration detection signal from the acceleration sensor (22) and processes it. Thus, the information processing unit (23) determines whether there is a wheelchair-equivalent user among at least one user moving between the landing and the car compartment (11).

The invention discloses a pleiotropic InDel molecular marker related to soybean yield, quality and agronomic traits and application, and relates to the technical field of molecular detection. Whole genome association analysis finds that a specific number of TC repetitive sequences exist in a specific region of a No.19 chromosome of soybean and are remarkably related to the characters of soybean yield, quality, plant height, leaf type and flowering time, and an InDel molecular marker is developed based on the TC repetitive sequences. By utilizing the InDel molecular marker, the genotype of a target site can be quickly and accurately detected, and soybean materials with different genetic backgrounds can be distinguished, so that soybean varieties with excellent agronomic traits such as yield, quality related traits, plant height and flowering time can be effectively screened in an auxiliary manner. According to the method, the breeding selection accuracy and efficiency are remarkably improved, and a powerful tool is provided for accelerating the soybean genetic improvement process.

The utility model provides a toxic gas detector control circuit capable of resisting electromagnetic interference, which comprises a power supply voltage regulation circuit, a temperature signal acquisition circuit, a sensor voltage regulation circuit, a sensor acquisition control circuit and a gas detector main control circuit which are in power supply connection. The gas detector main control circuit is in control connection with the 485 communication circuit, the acousto-optic prompt circuit, the LED state display circuit and the digital display screen, the gas detector main control circuit is in communication connection with the sensor acquisition control circuit, and the sensor acquisition control circuit is in control connection with the gas signal acquisition circuit and the temperature signal acquisition circuit. A TVS (Transient Voltage Suppressor) tube, a common mode inductor and a diode are arranged in the power supply voltage adjusting circuit; and a TVS tube and a diode are also arranged in the gas detector main control circuit. The poisonous gas detector has the beneficial effects that the anti-electromagnetic interference capability, the reliability and the stability of the poisonous gas detector when the poisonous gas detector is independently used are greatly improved.

The utility model relates to the technical field of welding quality detection, in particular to an integrated rapid welding detection device for pore analysis and automatic interpretation, which comprises a detection table, a controller, a detection mechanism and an adjusting disc, an adjusting plate is arranged between the adjusting disc and the detection table, a rotating mechanism is arranged between the adjusting plate and the adjusting disc, and the rotating mechanism is connected with the detection table. A displacement mechanism is arranged between the adjusting plate and the detection table, a fastening plate is arranged on the adjusting disc, a T-shaped groove is formed in one side of the fastening plate, an iron plate is arranged on the T-shaped groove, a T-shaped block is arranged on the T-shaped groove, a clamping assembly is arranged at one end of the T-shaped block, an electromagnet is embedded into the other end of the T-shaped block, and a clamping assembly is arranged on the other end of the clamping assembly. According to the structure, the adjusting disc can rotate by 360 degrees in the detection process through the rotating mechanism, it is ensured that each angle of the welding position can be comprehensively detected, and detection blind areas possibly existing in a traditional method are avoided.

This invention provides a CRISPR / Cas12a fluorescence detection method for FocTR4 based on magnetic bead-ssDNA-HRP probes, belonging to the field of nucleic acid detection technology. This invention involves isothermal amplification of the FocTR4 target sequence using RPA primers; then, a magnetic bead-ssDNA-HRP probe is prepared; and the Cas12a / crRNA complex, RPA amplification product, and probe are co-incubated. The activated Cas12a cleaves the probe, releasing HRP. After magnetic separation, a colorimetric solution containing OPD is added, and the presence and concentration of FocTR4 are determined by detecting the fluorescence signal. This invention combines the high efficiency of CRISPR / Cas12a cleavage with the high sensitivity and strong specificity of RPA technology, achieving highly sensitive and specific detection of FocTR4, with a linear detection range of 10. 2 ~10 7 With a detection limit as low as 70 CFU / mL, it can quickly and accurately detect Foc TR4 in soil samples, enabling rapid on-site detection and providing reliable technical support for the early diagnosis and control of banana wilt disease.

The embodiment of the invention provides an image detection method and computing equipment. The method comprises the following steps: segmenting a first image to be detected into a plurality of image blocks; performing frequency domain analysis on each image block to obtain each frequency domain analysis result corresponding to each image block; based on each frequency domain analysis result, determining a plurality of first image blocks meeting a preset screening condition from the plurality of image blocks, the preset screening condition at least comprising: the frequency domain analysis result indicates that the richness of the contained high-frequency features is the first N, and the high-frequency features correspond to an area in which the gray scale variation amplitude exceeds a specified threshold in the image blocks; determining image features corresponding to the first image based on the plurality of first image blocks through an extraction network; and determining a detection result at least indicating whether the first image is the generated image or not through a detection network at least based on the image features so as to realize accurate detection of the generated image.

The present application provides a kind of distillation residue moisture content on-line detection and residue discharge interlock control system, it provides a kind of non-contact, anti-clogging, double-verification moisture content detection and residue discharge interlock control system, realizes accurate detection, automatic judgment, abnormal alarm, closed-loop error correction, guarantees residue moisture content to reach standard.It includes: non-contact detection unit, infrared moisture detector is provided in distillation kettle;Second verification unit, the residue discharge port of distillation kettle is provided with on-line moisture content sensor, it is used to recheck the discharged cake;Interlock control unit;It is used to receive the moisture content signal of non-contact detection unit, second verification unit, the interlock control unit is also connected vacuum system, heating system, stirring system, residue discharge valve;And alarm and error correction unit, it is when second verification unit detects that moisture content is overproof, alarm is carried out, and residue discharge is suspended, so that distillation kettle carries out drying operation again.

The utility model relates to a water -based paint multifunctional heat preservation bucket belongs to sand casting technical field to solve the problem that the existing sand casting production, because of winter environmental temperature is too low to lead to the performance of coating weakening, there is the problem of poor sand core dip coating quality and the decline of casting yield. The present application includes the barrel body, heating assembly and temperature control assembly, the inside of barrel body is equipped with the inner bucket to form the container cavity, the heating assembly includes heating water tank and circulating water pipe, heating water tank is equipped with heating part and water pump, circulating water pipe is installed in the inner bucket, and it is equipped with two connecting ports connected with heating water tank, the temperature control assembly includes inductor and controller, the inductor is installed in the inner bucket and heating water tank respectively, and inductor, heating part and water pump are electric connection with controller respectively. The heat preservation bucket of the present application can realize the coating heating preservation and coating stirring in the barrel, will not reduce the performance of coating, improve sand core coating quality and casting yield.

This invention relates to a method for structural variant (SV) identification and genotyping in long-read family pedigree samples. The invention pertains to the field of vegetative variant (SV) detection in families, specifically focusing on methods for identifying and genotyping structural variants. The aim of this invention is to address the problems of existing family-based SV detection methods, which heavily rely on high-coverage sequencing, resulting in insufficient utilization of genetic characteristics and inaccurate SV detection and genotyping, as well as the high cost of sequencing multiple samples. This invention uses individual sequencing data from all family members as input, extracts variant features from each member, performs cluster analysis on the family feature set, assigns features to their respective members, and then uses three family feature signal correction methods to correct detection errors. Finally, SVs are located and anchored using Mendelian inheritance laws, and haplotype genotyping of SVs is completed using linkage information from long-read sequencing fragments.

The application discloses an electrochemical sensor and a preparation method and application thereof. The electrochemical sensor comprises a three-electrode system composed of a working electrode, a reference electrode and a counter electrode, wherein the working electrode is composed of a base electrode, a molybdenum disulfide nanoparticle modification layer and a polyethylene dioxythiophene layer; the molybdenum disulfide nanoparticles are loaded on the surface of the base electrode through a drop coating method, and the polyethylene dioxythiophene is in-situ loaded on the surface of the molybdenum disulfide nanoparticle modification layer through an electro-polymerization reaction. The electrochemical sensor can be used for detecting lead ions in water bodies, has the advantages of simple preparation, stable performance, suitability for an acidic medium and the like, and is suitable for practical application and popularization.

The application discloses a leveling device and method for bridge support assembly and belongs to the technical field of bridge support assembly; the leveling device comprises a supporting frame, a conveyor and a pressure applying and leveling assembly; the pressure applying and leveling assembly applies pressure through a leveling oil cylinder, then height adjustment and state detection are realized with the help of the leveling oil cylinder and a distance sensor, and a pressure sensor is arranged between the leveling oil cylinder and a horizontal fixing plate to monitor pressure; manual operation is replaced by mechanical automation, the efficiency of bridge support assembly is remarkably improved, accurate measurement and control are realized through the sensor, human errors are avoided, leveling precision and assembly quality are improved, human cost and labor intensity are reduced, and reliable guarantee is provided for bridge support assembly.

Embodiments of the present application provide a method, device and related equipment for judging the working state of a loop car. The method comprises: obtaining working state information of a preset position of the loop car, the working state information comprising three-axis inclination information and three-axis vibration frequency information, wherein the loop car comprises a steel wire rope, a guide wheel and a chain; determining a first comparison result of the three-axis inclination information and a first inclination threshold; determining a second comparison result of the three-axis vibration frequency information and a second vibration frequency threshold; and judging an abnormal part of the loop car based on the first comparison result and the second comparison result. The above method can accurately detect the working state of the loop car without using a laser sensor, thereby breaking the limitation of the applicable environment for detecting the working state of the loop car using a laser sensor.

The utility model discloses a kind of safety belt body child automatic locking mechanism press fitting and detection equipment, including lower mould, jacking mechanism, downstroke mechanism, upper mould, downstroke action mechanism, rocking mechanism, cutting and clamping mechanism, material receiving head mechanism, lower mould moving mechanism and detection camera;The jacking mechanism, lower mould and downstroke mechanism are sequentially arranged from bottom to top, and child automatic locking mechanism body fixing station is equipped on lower mould, downstroke mechanism can be lifted, and downstroke action mechanism and cutting and clamping mechanism are all arranged on downstroke mechanism, and upper mould is fixed in downstroke action mechanism bottom;Rocking mechanism is arranged on downstroke action mechanism.Compared with prior art, in the utility model device, each mechanism cooperates, and the efficient assembly and accurate detection of safety belt child automatic locking mechanism body and child automatic locking mechanism can be realized.

The utility model discloses a dehumidifier with a condensed water gravity detection structure, which comprises a dehumidifier shell, a water tank and an equipment support, a base, a middle mounting plate and a top display screen are arranged on the equipment support, a water storage cavity is defined by the base, the middle mounting plate and the equipment support, the water tank is detachably mounted in the water storage cavity, and the top display screen is arranged on the top display screen. A weighing assembly is arranged on the base, and a state display area, a control button area and a data processor are arranged on the top display screen; the water tank comprises a water tank body, a water tank cover and a water tank bottom face, the water tank bottom face abuts against the weighing assembly, the weighing assembly sends weight data to the data processor, and the data processor carries out calculation and sends water level data to the state display area to display the real-time water level. And the measurement precision is reduced due to the easy erosion and adhesion of stains.

This invention relates to a surface ecological monitoring device and method based on a surface filter, comprising a surface filter body and a monitoring mechanism. The filter body includes a barrel-shaped floating frame fixed by a shore-based support. A filter barrel is elastically connected within the frame. A bottom-driven pump provides intermittent negative pressure, causing the filter barrel to float back and forth. A guide plate, level with the water surface, is located at the end of the floating frame. The monitoring mechanism includes a vision assembly and a computing unit. The vision assembly is positioned above the floating frame, and its support section has a circular array of several monitoring units. Each unit includes a supplementary lighting panel (light-emitting component) and a vision sensor (vision component) located in its center facing the water surface. A reflective section is provided on the surface of the guide plate, allowing the supplementary light to penetrate the water surface and be reflected to the vision component. The computing unit includes an image temporary storage unit, a standard data storage unit, and a comparison calculation unit. The temporary storage unit stores visual images at unit intervals, and the comparison calculation unit extracts images, compares them with standard data, and outputs the results.

The application relates to the technical field of semiconductor chip detection, and provides a semiconductor chip tin ball defect detection method and system. A two-dimensional gray image and a depth map are acquired, a tin ball center candidate point is determined by using multi-scale Gaussian difference operation and local extreme point spatial distribution, a target center is accurately positioned based on depth map mapping and gradient analysis, and a three-dimensional curved surface model is matched with a standard tin ball curved surface model, so that the problems of low tin ball center positioning accuracy, high defect false detection rate and difficulty in adapting to complex illumination and deformation scenes in traditional detection methods are solved, and the method has the advantages of accurate positioning, comprehensive defect classification and strong detection robustness.

The application relates to the field of power systems and artificial intelligence security, and discloses a simulation attack and defense method of a power grid load frequency control system adopting a DRL controller, which comprises the following steps of: simulation attack: identifying system state variables most critical to DRL decision; setting an attack target and calculating an initial disturbance amount of the critical state variables, limiting the generation of a final disturbance amount; deducing disturbance amounts of the remaining dependent state variables to obtain an adversarial disturbance vector, which is superimposed to the DRL controller to implement the attack. Simulation defense: applied to a hybrid system containing DRL and a backup PID controller: real-time monitoring of the Q value sequence output by the DRL evaluation network to detect whether it is continuously lower than the normal benchmark; once the statistical quantity exceeds the threshold, it is determined that an attack is suffered, and the control right is immediately switched from the DRL to the PID controller to maintain the stability of the system. The method can generate a hidden and physically regular adversarial attack to evaluate the vulnerability of the system, and provide a fast and low-cost active defense mechanism to improve the security and resilience of the LFC system in the adversarial environment.

This invention discloses a UAV inspection method and system for bridge bearings. The method includes: planning a strip-shaped flight path and constructing a coarse 3D point cloud model of the bridge; then planning a scanning flight path around the bridge's outer envelope to collect fine point clouds of bridge components; firstly, using a small amount of labeled data combined with pseudo-label generation and knowledge distillation to complete lightweight training of the PointNet model; then, strengthening structural association features through a contextual attention mechanism and generating virtual points using an occlusion region feature completion method to complete the occluded region and obtain a complete bearing point set; finally, extracting bearing geometric parameters by weighted noise point removal, iteratively fitting bounding boxes, and smoothing; planning a flight path based on the bearing's location to collect the bearing's surface image; then performing image cleaning and enhancement processing, and finally identifying surface defects using image recognition methods to generate an inspection report. Comprehensive technical support is provided.

The invention discloses a dynamic monitoring method for bag explosion and coal sample scattering of a packer and a related device, and belongs to the technical field of power plant fuel management. The method comprises the following steps: collecting a coal sample transportation image in real time through visual perception equipment on a transportation path after a coal sample is packaged; performing real-time analysis on the coal sample transportation image based on an image recognition algorithm, and detecting whether a coal sample scattering area exists or not; when a coal sample scattering area is detected, estimating the scattering amount according to image features of the scattering area; and if the scattering amount exceeds a preset threshold value, generating a bag explosion alarm signal. Through the three-level architecture of the sensing layer, the algorithm layer and the business layer, the problems of detection lag, high false alarm rate and insufficient data credibility in the prior art are solved, and dynamic, accurate and credible monitoring of the whole process of coal sample packaging and transportation is realized.

The invention discloses a defense method for low-contrast character attack in an input document of an electric power large model, which comprises the following steps of: after inputting an original document and asking a question by a user, copying the original document into an adversarial document, identifying low-contrast characters in the adversarial document, and deleting the low-contrast characters; then, inputting user questions into the electric power large model respectively in combination with the original document and the processed confrontation document, if two output results are similar, the low-contrast text does not influence the output of the electric power large model, judging that the input document does not have an attack behavior, and if the two output results are not similar, judging that the input document does not have an attack behavior. And if the low-contrast character in the input document has the attack behavior, the low-contrast character obviously affects the output of the electric power large model, and the attack behavior of the input document is judged, so that the low-contrast character attack in the input document can be accurately detected, and the security defense capability of the electric power large model is improved.

The application relates to the technical field of new energy vehicles and vehicle detection equipment, and discloses a portable device for heavy truck axle housing liquid level measurement, which is suitable for electric drive axle and traditional drive axle. The device comprises a shell support structure, an electronic control assembly, a posture adjusting execution mechanism, a quick locking connection mechanism and a liquid level measurement assembly; the shell support structure is used for supporting the device and stretching and retracting the measurement assembly; the electronic control assembly is used for power supply, control and result display; the posture adjusting execution mechanism is used for adjusting the posture of the measurement assembly to keep it vertical; the quick locking connection mechanism is used for quickly fixing the device and the oil filling hole of the axle housing; and the liquid level measurement assembly realizes liquid level detection by cooperating a magnetic float and a Hall sensor. The application takes into account the application requirements of the electric drive axle and the traditional drive axle, and can especially meet the requirements of the electric drive axle on liquid level detection precision and reliability.

The invention relates to the technical field of feed trays, and discloses a novel feed tray detection device, which comprises an adjustable bracket used for mounting and supporting the detection device and avoiding a vibration source; the connecting support and the adjustable support are installed in a hinged mode, the connecting support is used for adjusting the detection angle of the detection device, a mounting plate is installed on one side of the connecting support, and the relative height of the mounting plate and the connecting support is adjustable; the pendulum component is arranged on the side surface of the mounting plate and is rotationally connected with the mounting plate; according to the invention, the problems of unstable material quantity and high alarm rate caused by similar colors and different heights of products in traditional optical fiber detection are comprehensively solved through a plurality of adjusting structures (the adjusting pipe has multiple gears, and the angle and height of the connecting bracket are adjustable) and different state designs (vertical / inclined / universal ball structures) of the pendulum component, and the production efficiency is effectively improved.

The application discloses a floating type offshore platform pontoon camber detection device and relates to the technical field of pontoon camber detection devices. The device comprises a mounting cover, an air pressure sensor, a temperature sensor and a battery pack are mounted on the inner wall of the mounting cover, the battery pack supplies power to the air pressure sensor and the temperature sensor respectively, a magnetic force suction disc is fixedly connected to the bottom end of the mounting cover through a transition net, the air pressure sensor and the temperature sensor are connected with a signal transmitter through data transmission cables respectively, and water-insoluble gas is injected into the mounting cover through a gas delivery pipe. The device has the beneficial effects that: after the mounting cover is adsorbed to the pontoon through the magnetic force suction disc, water-insoluble gas is injected into the mounting cover, so that a stable environment is formed in the pontoon and the internal and external pressure of the pontoon is kept consistent, the pressure is different at different depths underwater, the air pressure data in each mounting cover is transmitted, the pontoon camber is detected, the camber data is detected, and the device is convenient to operate and flexible to use.

This invention relates to a power-on self-test method for an autonomous driving system. The system includes: a controller detection module, used to acquire key HAD parameters, compare them with set thresholds, and determine whether the HAD status can support the stable operation of the autonomous driving system. Key parameters include CPU temperature < threshold, CPU load rate < threshold, CPU disk space > threshold, and CPU memory read / write error rate < threshold; and a communication detection module, used to send specific messages to acquire key network parameters, compare them with thresholds, and determine whether the network status is available. Key parameters include CAN / LIN. This invention not only enables comprehensive self-testing during the autonomous driving startup phase, ensuring vehicle driving safety, but also comprehensively and accurately detects the status of each module, promptly identifying potential faults or anomalies, thus effectively improving the system's safety and reliability.

The application belongs to the technical field of transformer fault identification and maintenance, and particularly relates to an integrated online monitoring system based on early diagnosis of power station transformer faults; a UAV stabilizes flight to the position of power equipment through a UAV flight stabilization module to perform video shooting, and the video is transmitted to a deep learning power equipment fault identification platform in real time; the deep learning power equipment fault identification platform analyzes and processes the transmitted video, and in combination with the data of the power equipment sensor, judges the fault cause of the power equipment, and transmits the judgment result data to a fault maintenance unit; the fault maintenance unit checks and maintains in combination with the transmitted judgment result data; a terminal data display screen displays the running data of the power equipment in real time; a power equipment independent database retains and updates the running data of the power equipment; not only is the UAV introduced to form unique flight for the power equipment, but also a new identification technology is introduced for the fault of the power equipment as an auxiliary means.

This invention provides a side-mounted liquid level gauge calibration and testing device. It includes a support body with a mounting assembly for fixing the liquid level gauge. The mounting assembly includes a first water inlet; a detection tube mounted on the support body, having a second water inlet at the same vertical height as the first water inlet; a standard component on the detection tube for detecting the liquid level within the tube; a water tank with its outlet connected to both the first and second water inlets, supplying water to the liquid level gauge and the detection tube; and a controller electrically connected to the liquid level gauge and the standard component. This invention, through the detection tube mounted on the support body and the mounting assembly for fixing the liquid level gauge, ensures that the first and second water inlets are at the same vertical height. At the same liquid level height, both the liquid level gauge and the standard component output corresponding electrical signals, which are then compared to simulate the accuracy of the liquid level gauge detection under actual operating conditions, thus improving the detection accuracy of the liquid level gauge.