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23results about How to "Avoid detection bias" patented technology
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Nondestructive testing method and system for deep compaction degree of large-thickness water-stable base
ActiveCN121856533BBreak the limitations of single dataComprehensive engineering scenario data supportData sourceStructural engineering
The present application relates to the field of engineering detection technology, in particular to a deep compaction degree nondestructive testing method and system for large-thickness water-stable base course. A multi-source heterogeneous dataset of a to-be-detected area is obtained using an integrated detection device; a construction process compliance index and a process uniformity index of the to-be-detected area are obtained; each data source in the multi-modal nondestructive testing data is deeply corrected to obtain a deep correction compaction degree estimation set of each data source; the deep correction compaction degree estimation set of each data source is input into an adaptive weight fusion model to obtain a preliminary compaction degree distribution map; a fusion compaction degree distribution map of the to-be-detected area and a dynamic confidence score of each spatial point are calculated; the compaction quality of the to-be-detected area is determined, and a detection strategy optimization instruction is generated for the area with a confidence score lower than a confidence threshold. The present application can realize high-precision, high-confidence and engineering-actual nondestructive testing of deep compaction degree of large-thickness water-stable base course.
Owner:YUNNAN CONSTR INVESTMENT PAVEMENT ENG CO LTD +2
Hyperspectral anomaly detection method based on background clustering constraint under potential feature separation
The application discloses a hyperspectral anomaly detection method based on background clustering constraint and potential feature separation, and relates to the technical field of hyperspectral remote sensing detection applications. First, band selection and partition generation of a hyperspectral original image are carried out to generate fixed-size image blocks. Then, a basic image reconstruction framework is constructed based on a lightweight spectral-spatial feature extraction encoder and a convolution decoder. Then, a pixel-level deep clustering network is introduced to complete latent feature clustering modeling, calibrate the background clustering label of the image block, and obtain the intra-class RX detection score in the feature space. Then, the intra-class RX score and the reconstructed image are reversely mapped to the original image space to construct a global RX response map and a reconstructed full image. Finally, a weight matrix is generated by using the reconstruction error between the original image and the reconstructed full image, the global RX response map is modulated, and the final anomaly detection result is output. The application fuses the background clustering constraint and the potential feature separation mechanism, effectively improves the detection accuracy of small anomaly targets, and significantly suppresses false alarm interference.
Owner:SHANGHAI INSTITUTE OF TECHNICAL PHYSICS CHINESE ACADEMY OF SCIENCES
An automated on-line ore particle size detection and classification apparatus
ActiveCN224328027Uevenly dispersedAddress uneven distributionPreparing sample for investigationSortingControl engineeringProcess engineering
The utility model provides an automatic ore granularity on -line detection and grading equipment. Including casing, support subassembly, push plate subassembly and industry camera, support subassembly includes upper support board, and upper support board is set in the casing, and push plate subassembly includes push plate and floating rod, and push plate is installed on the floating rod, and the floating rod is installed on the support subassembly through the floating assembly, and the interval between the lower edge of push plate and the upper end surface of upper support board changes in gradient, and the inner top of casing is equipped with industry camera. The floating rod drives the push plate to rotate, and the interval between the lower edge of push plate and the upper end surface of upper support board changes in gradient in the process of rotation, and the gathered ore is scattered, and the uniform dispersion of particles is ensured, and the uneven distribution of particles is solved. Secondly, the industrial camera directly shoots the dispersed particles, captures the distribution state of coarse and fine particles, avoids the problem that fine particles are covered or coarse particles are distorted, makes the granularity data closer to the true value, and improves the detection accuracy and reliability.
Owner:MINMETALS MINING (ANHUI) ENG DESIGN CO LTD
Food freshness detection device and detection method
InactiveCN121784255Aimprove accuracyReduce inhibitionWithdrawing sample devicesPreparing sample for investigation
The food freshness detection device specifically comprises a main body, and a sampling assembly, a detection assembly and an air exhaust assembly which are sequentially arranged on the main body, the sampling assembly comprises a shell, a temperature adjusting part and a triggering part, the shell is arranged on the main body, and a sampling cavity is concavely formed in the end, close to food, of the shell; the temperature adjusting part is arranged on the sampling cavity; the detection assembly comprises a detection cavity and a detector, the detection cavity is communicated with the sampling cavity, a gas outlet is formed in the side, away from the sampling cavity, of the detection cavity, and the gas extraction assembly is used for sucking gas in the sampling cavity into the detection cavity and discharging the gas from the gas outlet; the detector is arranged in the detection cavity and is used for detecting the concentration of ammonia gas in the detection cavity. By adjusting the food temperature, triggering air exhaust detection at a proper temperature and timely discharging residual gas, the interference of low temperature and gas residue on ammonia gas detection is effectively avoided, and the accuracy, stability and reliability of food freshness detection are improved.
Owner:SHENZHEN AODELAI ELECTRONIC INFORMATION TECH CO LTD
A box type light source module and a cotton foreign fiber removing device comprising the same
The application discloses a box-drawing type light source module and a cotton foreign fiber removing device comprising the same, and relates to the field of mechanical equipment for textile industry. The box-drawing type light source module comprises a light box and a light bar. The light box is hollow inside, and the two sides of the light box along the width direction of the light box are both provided with openings. The light bar is detachably installed inside the light box, and the length direction of the light bar is consistent with the length direction of the light box. The light bar is provided with two groups of upper and lower light bars. The two groups of light bars are arranged at intervals, and an observation gap is formed between the two groups of light bars. The observation gap is not blocked in the imaging optical axis direction of the camera. The field of view of the camera passes through the observation gap and the two openings along the width direction of the light box, and covers the to-be-detected area. The light source module creates excellent unobstructed imaging light conditions for the camera through the precise design of the double-light-bar spatial layout and the brightness compensation strategy. Meanwhile, the maintenance efficiency is greatly improved through the modularized drawing structure.
Owner:WUHAN FOREIGN FIBER DETECTION TECH CO LTD
A temperature detection device based on temperature sensor
ActiveCN224719536UIsolate fluctuation interferenceEnsure power supply stability
The application relates to the field of temperature detection, in particular to a temperature detection device based on a temperature sensor. The device comprises a temperature sensor, a voltage stabilizing component, a detection processing unit and a control unit, a first input end of the voltage stabilizing component is used for connecting an external power supply; the detection processing unit is connected to a detection input end of the control unit; a first output end of the voltage stabilizing component is connected to a power input end of the control unit; a second output end of the voltage stabilizing component is connected to a reference voltage input end of the control unit; an output end of the control unit is connected to a first input end of the detection processing unit; an output end of the temperature sensor is connected to a second input end of the detection processing unit; a third output end of the voltage stabilizing component is connected to a third input end of the detection processing unit; the output end of the temperature sensor is connected to the third input end of the detection processing unit; and an input end of the temperature sensor is grounded. The device is used for solving the problem of low detection precision in the prior art.
Owner:GUANGDONG SHENLING ENVIRONMENT SYST CO LTD
Pipeline wall thickness measuring method and device based on digital twinning, equipment and medium
PendingCN121953905ARealize a reasonable distributionavoid detection biasMeasurement devicesDesign optimisation/simulationStructural engineeringMechanical engineering
Owner:HEBEI INST OF SPECIAL EQUIP SUPERVISION & INSPECTION
Cable Production Identification and Monitoring System and Method Based on Cable Images
PendingCN122089723Arestore accuratelyEfficient and Accurate CollectionImage analysisCharacter and pattern recognitionPattern recognitionEngineering
This invention discloses a cable production identification and monitoring system and method based on cable images, belonging to the field of image recognition technology. The system includes: acquiring a sequence of cable surface depth images to construct a grayscale surface map along the cable surface depth direction; using the central ridge of the grayscale surface map as a dynamic axis of symmetry, detecting candidate pixels through multi-scale morphological top-hat transformation to form a symmetrical residual distribution map; combining the eight-neighbor gradient direction field and Hessian matrix curvature to remove false defect points, obtaining an effective image, and inputting it into a pre-trained multi-task neural network to simultaneously output a defect segmentation mask and category label; generating a three-dimensional mesh model with dimensional accuracy through Poisson surface reconstruction; and finally, using the physical coordinates of the defect center to drive a laser marking machine to mark a QR code containing key information, which is then associated and stored in a blockchain database. This application improves the accuracy and efficiency of defect identification, realizing the quantitative characterization and full lifecycle management of defects.
Owner:SHAANXI TONGDA CABLE MFG CO LTD
Portable multi-depth water temperature rapid detection sensor
ActiveCN224398824URealize regulationRealize functionThermometer detailsTemperature measurement of flowing materialsAtmospheric sciencesMechanical engineering
The utility model discloses a portable multi-depth water temperature rapid detection sensor belongs to environmental monitoring technical field, and its technical scheme main points include controller, the front side of controller is provided with telescopic component, the front side of telescopic component is provided with the detection component of adjustable type, telescopic component includes the support frame of fixed connection in the outside of controller, the inboard sliding connection of support frame has telescopic support, the top of support frame is provided with the limit sliding slot, can solve the portable multi-depth water temperature rapid detection sensor of existing portable multi-depth water temperature rapid detection sensor usually lacks adjustable length adjusting function, is inconvenient according to the detection distance flexible adjustment equipment length of stretching out, thereby needing operator to move position frequently or unable to send the detector accurately to the target water body, influence detection efficiency, and lack multi-depth adjustment detection structure, difficult fast, accurately control water temperature detector and stay detection in different depth, influence the problem of the flexibility of detection.
Owner:SHANXI YUQI TECH CO LTD
Wheel bolt looseness detection method and device, vehicle and medium
PendingCN121947371Aavoid overlappingavoid interferenceMeasurement devicesSignalling/lighting devicesSteering wheelFeature extraction
The invention relates to the technical field of vehicle fault diagnosis, and discloses a wheel bolt looseness detection method and device, a vehicle and a medium, and the method comprises the steps: collecting an inertial measurement unit signal, a wheel speed signal and a steering wheel hand torque signal of the vehicle; determining target detection data based on the inertial measurement unit signal, the wheel speed signal and the steering wheel hand torque signal; detecting whether a wheel bolt of the vehicle is loosened by using the target detection data to obtain a detection result; and controlling the vehicle to execute corresponding actions based on the detection result. According to the method, the existing sensor of the vehicle is directly used for collecting the signals, then the signals are fused with the multi-dimensional vehicle running state signals, feature extraction and combination processing are combined to form target detection data, the target detection data are used for wheel bolt looseness detection, full-process automation from signal collection, data processing, state detection to vehicle control action execution is achieved, and the detection efficiency is improved. And the detection accuracy and the driving safety are improved, so that the vehicle fault diagnosis requirements of low cost, high real-time performance and easy deployment are met.
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD
Liftable air quality monitoring device
ActiveCN224201454Uprevent leakageavoid detection biasPhotovoltaic supportsStands/trestlesSolenoid valveGas passing
The utility model discloses a liftable air quality monitoring device, which comprises a first moving plate, a correction mechanism and a lifting mechanism, a first fixed plate is fixedly connected onto the first moving plate, and the lifting mechanism is arranged on the first fixed plate; a liftable air quality monitoring device regularly conveys standard gas to an air detection sensor through cooperation of a standard gas tank, an electromagnetic valve and a flow control valve, discharges gas through a sealing cavity pressure sensor and a one-way vent valve, avoids detection deviation caused by long-term use of the sensor, and can set a calibration period by using a control program. The fixed arc-shaped plate and the rotating arc-shaped plate form a sealing cavity through a silica gel sealing ring, the sealing cavity is closed during correction and opened during calibration, external gas interference is prevented, the calibration process and the actual monitoring state are convenient to switch, the sealing performance is good, standard gas leakage or external pollutant mixing is avoided, the correction precision is improved, and the cost is reduced.
Owner:NANJING RENAI ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
A loss-in-weight scale to improve weighing accuracy
This invention discloses a loss-in-weight scale for improving weighing accuracy; relating to the field of loss-in-weight scale technology, it includes a support frame, a tank, and a tank cover. Multiple equidistant pressure sensors are installed on the periphery of the top surface of the support frame. A quantitative transmission mechanism is provided at the lower end of the tank, and a balancing component is installed on the upper end of the tank cover. This invention significantly improves weighing accuracy through the symmetrical arrangement of pressure sensors and a stable force transmission structure. Multiple equidistant pressure sensors installed on the periphery of the top surface of the support frame are rigidly connected to the tank through a positioning plate, ensuring that the weight of the tank is evenly transmitted to each sensor, avoiding detection deviations caused by single-point force. Simultaneously, the fixing effect of the positioning plate reduces interference from tank shaking to the sensors, making the weight signal more stable. The quantitative transmission mechanism of this invention achieves stable material transport through the synergistic effect of stirring and double-headed spiral pushing. By optimizing the material diversion and guiding structure, residue inside the tank and transport deviations are reduced, further improving measurement accuracy.
Owner:JIANGSU BRAUN WEIGHING MFG CO LTD
A pesticide residue detector and a sample mixing mechanism thereof
This utility model provides a pesticide residue detector and its sample mixing mechanism, comprising: a detection body, a detection box at the left end of the detection body, an oscillation mechanism for accelerating chemical reactions inside the detection box, a clamping mechanism for fixing sample tubes on the oscillation mechanism, and a support column with a support plate fixedly connected to the upper end of the support column. Compared with the prior art, this utility model has the following advantages: by setting up an oscillation mechanism, a drive motor is used to drive the support column and the support plate to generate rapid rotational oscillation. Rapid oscillation can effectively break up sample tissues, accelerate the dissolution and diffusion of pesticide residues, and allow the target substance to be released more completely into the solvent, thereby avoiding detection deviations caused by uneven mixing. By setting up a clamping mechanism, hard collisions between the test tubes and the clamps during the oscillation mixing process are avoided, which could lead to test tube breakage.
Owner:SHENZHEN SCIENCE & TECHNOLOGY INSPECTION & TESTING SERVICES CO LTD
Fly ash sampling device for boiler of thermal power plant
PendingCN121954569AAvoid invalid transfersFacilitates on-site online chemical composition analysisWithdrawing sample devicesPreparing sample for investigationPower stationChemical composition
The invention discloses a thermal power plant boiler fly ash sampling device, which comprises a separation mechanism, the separation mechanism is provided with a sampling mechanism, the sampling mechanism comprises a mounting rack, the mounting rack is fixedly connected with a fixing rack, and a drying device is mounted above the fixing rack; fly ash is separated through the separation mechanism, after separation, the fly ash can enter the detection assembly to be discharged, in the middle section of fly ash discharging, sampling is conducted through the sampling disc, samples are pushed to a detection area after sampling, in the sample pushing process, the samples can be automatically flattened through the sampling part, detection equipment can conveniently conduct on-site online chemical component analysis, and the detection efficiency is improved. Rapid online pre-detection is achieved, the detection period is shortened, pre-judgment can be conducted on site, problem discovery lag is avoided, meanwhile, preliminary data guidance is provided for follow-up biomass energy product detection service, and invalid circulation of unqualified samples is avoided.
Owner:HUANENG XINDIAN POWER GENERATION CO LTD
High-voltage equipment foundation condensation prevention and control system based on two-dimensional humidity monitoring and intelligent linkage ventilation and control method of high-voltage equipment foundation condensation prevention and control system
PendingCN122086167ADoes not change the actual humidityAvoid Detection DistortionSimultaneous control of multiple variablesThermodynamicsNatural ventilation
The invention discloses a high-voltage equipment foundation condensation prevention and control system based on two-dimensional humidity monitoring intelligent linkage ventilation and a control method thereof.The system comprises a main box body, a bimodal humidity monitoring unit used for detecting the temperature, humidity and water vapor concentration in the main box body, and a dynamic ventilation assembly used for outward ventilation of the main box body; the active condensation suppression device is used for feeding external air into the main box body and can heat the air; according to the method, an intelligent decision center module of a bimodal humidity monitoring unit judges a current state according to temperature and humidity data and water vapor concentration data, and if the current state is a normal state, a dynamic ventilation assembly is controlled to operate at a low speed to achieve natural ventilation from a main box body to the outside; if the current state is a condensation early warning state, the dynamic ventilation assembly is controlled to operate at a medium speed, and the active condensation suppression device is controlled to supply fresh air into the main box body; and if the condensation risk state is judged, controlling an electric heating wire to heat so as to raise the temperature of air in the main box body.
Owner:JIAOZHOU POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO
Integrated COD (Chemical Oxygen Demand) ammonia nitrogen phosphorus water quality detector and use method thereof
PendingCN121955323AFully automatedRealize integrated detectionTesting waterAmmoniacal nitrogenChemical oxygen demand
The invention relates to the field of water quality detection, in particular to an integrated COD ammonia nitrogen phosphorus water quality detector and a using method thereof.The detector comprises a detection box body, a cleaning assembly for self-cleaning of equipment is arranged at the upper end of the interior of the detection box body, and a sample treatment assembly fixed in the detection box body is arranged on one side of the cleaning assembly; the sample processing assembly comprises a sample container box fixedly mounted in the detection box body; the cleaning assembly comprises a cleaning solution box fixedly installed at the upper end of the interior of the detection box body, the output end of the cleaning solution box is connected with a communicating pipe, and a communicating control valve is fixedly installed on the communicating pipe. The cleaning assembly can automatically inject cleaning liquid into the digestion glass tank and wash the inner wall of the tank body and related pipelines, waste liquid is recycled to the recycling box in a centralized mode through the recycling pipe, cross contamination caused by residual samples and reagents is thoroughly avoided, meanwhile, the workload of manual cleaning is omitted, and the detection efficiency is improved.
Owner:BAIZHENG TECHNOLOGY DONGTAI CO LTD +1
Sample storage device for underground water detection
ActiveCN224208048Uavoid detection biasRotary stirring mixersTransportation and packagingBottleGroundwater
The utility model discloses a sample storage device for underground water detection, which comprises a storage bottle, an annular support part is formed at the bottom of the storage bottle, a rotating part is rotatably arranged at the bottom of the storage bottle, the upper part of the rotating part is positioned in the storage bottle, and the lower part of the rotating part is positioned in the storage bottle. The lower portion of the rotating part is located in the annular supporting part, a stirring rod located in the storage bottle is detachably arranged on the upper portion of the rotating part, and a key groove is formed in the lower end face of the rotating part. The problems that in a storage bottle in the prior art, when samples are stored for a long time, precipitates are likely to be generated, large errors occur in detection results of the samples taken out in all batches, and the accuracy of detection data is affected are solved.
Owner:JIANGSU TIANYUAN LOCAL ENVIRONMENTAL IND CO LTD
A method for detecting the protein content in soy milk powder
PendingCN122259503APrecise optical path extinction dataavoid detection biasProteomicsColor/spectral properties measurementsProtein moleculesOptical path length
The present application relates to the technical field of food detection, in particular to a method for detecting the protein content in soy milk powder, comprising: obtaining the original near-infrared spectrum data of the soy milk powder sample to be detected and constructing a protein characteristic vector; calling a preset protein optical constant database storing the light absorption coefficient and refractive index under different protein concentrations, matching and then backstepping the average light path and extinction coefficient of the protein molecules to obtain light path extinction data; based on the data, establishing an absorption kinetics model to simulate the propagation process of light in the suspension and obtain the light intensity decay state, and after time integration, obtaining the cumulative absorbance proportional to the number of protein molecules; combining the dry weight of the sample to calculate the protein content per unit mass, and after environmental temperature compensation to correct the spectral drift, outputting the standardized detection result. The method can improve the accuracy and stability of the detection of the protein content in soy milk powder.
Owner:SHANDONG SHIJICHUN FOOD
Special-shaped part quality inspection tool
The utility model relates to the technical field of quality inspection tooling, and disclose a kind of special-shaped part quality inspection tooling, including base, fixed backing plate is equipped in the upper portion of base, fixed backing plate upper end surface is equipped with accommodating groove, further including movable bracket, hinged in the accommodating groove;Two movable detection parts, respectively rotatable and set in the upper end surface end of movable bracket, and movable detection part includes industrial camera and telescopic part, the detection position of industrial camera can be adjusted by telescopic part;Detection compression part, including moving part and two stand, infrared emitter is installed on one stand, and infrared receiver is installed on another stand;Industrial camera of the utility model can be photographed from multiple positions by telescopic part and rotating column the details such as special-shaped part surface profile, hole position edge, after high-definition image transmission to computer, program analysis can accurately identify size deviation, surface flaw and other problems, avoid subjective error of artificial visual inspection.
Owner:GUANGSHAN COUNTY RONGHAI INTELLIGENT EQUIPMENT CO LTD
A communication tower bolt loosening detection method and system
The application discloses a communication tower bolt loosening detection method and system, and belongs to the technical field of communication tower bolt loosening detection.The application solves the problem of low detection precision of the existing bolt loosening detection method.The application firstly positions the bolt position in a to-be-detected image, then cuts out a bolt sub-image from the to-be-detected image according to the positioning result, then detects the shooting angle of each bolt sub-image, and designs a specific loosening detection method for bolts with different shooting angles, so that the detection deviation caused by the same detection method for bolt images with different shooting angles in the same image can be avoided, and the bolt loosening detection precision is improved.The application can be applied to the communication tower bolt loosening detection.
Owner:HEILONGJIANG UNIV
Air conditioner indoor temperature correction control method and system
PendingCN121977280AAccurate temperature controlImprove comfortMechanical apparatusLighting and heating apparatusThermodynamicsMechanical engineering
The invention relates to the technical field of air conditioner control, in particular to an air conditioner indoor temperature correction control method and system. The method comprises the steps that a first temperature value T1 detected by an air inlet temperature sensor of the air conditioner is obtained; acquiring a second temperature value T2i detected by an indoor temperature sensor at a position i set by a user; according to the first temperature value T1 and the second temperature value T2i, a corrected indoor temperature Tc is obtained through weighted calculation; and according to the corrected indoor temperature Tc, the operation parameters of the air conditioner are controlled. The method aims at solving the problem that indoor temperature detection is inaccurate due to the fact that the position of an air inlet temperature sensor of an existing air conditioner is fixed, the indoor temperature sensor capable of being configured by a user is introduced, the corrected temperature is calculated in combination with weighted average, and therefore more accurate air conditioner control is achieved.
Owner:SICHUAN CHANGHONG AIR CONDITIONER CO LTD
A multi-channel test kit
ActiveCN224297886UGuarantee normativeImprove detection efficiencyClosure with auxillary devicesMaterial analysisStructural engineeringDetection bias
The utility model discloses a multichannel detection kit, specifically related to detection kit technical field, including the box body of upper and lower distribution, two box bodies are connected through the hinge, and the side of two box bodies is far away from each other and is equipped with a plurality of recesses of equal interval distribution, and each recess is equipped with test strip inside, and the side of two box bodies is far away from each other and is hinged with the cover plate, the outer wall of cover plate is equipped with the detection channel corresponding with a plurality of recesses, and each detection channel is connected with the flap inside, and the outer wall surface of each flap is equipped with rectangular groove, and the rectangular groove is equipped with frame and identification paper inside. The utility model discloses a plurality of detection channels on two box bodies can distinguish use, improve the detection efficiency, and utilize the flap protection test strip to improve the detection accuracy, and simultaneously, the detection personnel can use the identification paper and directly distinguish the test strip that has been used and has not been used, effectively avoid the detection deviation caused by repeated use, guarantee the standardization of detection operation, and can further improve the detection efficiency.
Owner:JINAN GUANGYIN MEDICAL TECH CO LTD
Air volume self-adaptive adjusting integrated cooker based on oil smoke concentration sensing
PendingCN121854912ASmoke fastReduce energy consumptionDomestic stoves or rangesLighting and heating apparatusAir volumeProcess engineering
The invention discloses an air volume self-adaptive adjusting integrated cooker based on lampblack concentration sensing, and belongs to the technical field of kitchen appliances. The problem that an oil smoke concentration sensor in a traditional integrated cooker is prone to being polluted by oil contamination and consequently detection is not accurate is solved. The integrated cooker comprises an integrated cooker assembly, the integrated cooker assembly comprises a cooker body, a cooking bench is arranged on the cooker body, a smoke box is installed on the cooker body, an oil plate is fixedly installed on the smoke box, an oil fume concentration sensor is arranged on the oil plate, the oil fume concentration sensor is connected with a control module, and the control module is connected with a fan. A cleaning assembly used for automatically cleaning the surface of the sensor is arranged at the position, close to the oil smoke concentration sensor, of the oil plate. According to the invention, the effects of rapidly exhausting smoke when the oil smoke amount is large and saving energy when the oil smoke amount is small are achieved, and the long-term working reliability and detection precision of the sensor are ensured through the self-cleaning function.
Owner:ZHEJIANG SANFER ELECTRIC