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32results about How to "Meet the needs of online testing" patented technology
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Railway fastener abnormality detection system based on monocular vision and laser speckles
PendingCN107688024ADoes not increase imaging frame rateAdd Artificial TextureOptically investigating flaws/contaminationRailway auxillary equipmentEngineeringCarriage
The invention discloses a railway fastener abnormality detection system based on monocular vision and laser speckles. The railway fastener abnormality detection system is used for detecting whether fasteners are abnormal or not and comprises laser speckle projectors, area array cameras, a wheel encoder, an RFID detector and an industrial personal computer, wherein the laser speckle projectors andthe area array cameras are arranged above a bottom sleeper of a train body, the laser speckle projectors are positioned right above the fasteners and project laser speckles towards fastener areas perpendicularly, the wheel encoder is fixed on a rotating shaft of a wheel and connected with the area array cameras, the RFID detector is fixed below the train body, and the industrial personnel computerpositioned in a carriage is connected with the area array cameras, the wheel encoder and the RFID detector. The railway fastener abnormality detection system has the advantages that with mottled grains on the surfaces of the fasteners increased through the laser speckle projectors, image block matching precision can be improved and the three-dimensional topography of the fasteners is constructedaccurately, so that various abnormalities of different types of fasteners can be detected effectively.
Owner:成都精工华耀科技有限公司
Method and system for detecting and locating leakage based on infrared imagery technique
InactiveCN101251430AAddressing Disadvantages of Immersion InspectionMeet the needs of online testingFluid-tightness measurementImaging processingDisplay device
The invention relates to a leak detection positioning method and a system based on the infrared imaging technology, which belongs to the detection technical field. The leak detection positioning system provided by the invention comprises a control device, an infrared imaging device, a cooling device, a sensing device, an aeration device and a display device. Gas with certain pressure is cooled down by the cooling device to serve as a test medium, the control device drives valves to aerate the tested object and completes the sequential control, the sensing device checks the status of the system, the infrared imaging device collects the infrared images of the tested object, the infrared images are transmitted to the control device and undergo a series of image processing operations for leak analysis, leak amount calculation and leak positioning, and test results are displayed on the display device. The leak detection positioning method and the system based on the infrared imaging technology has the advantages of high test accuracy, high efficiency of leak positioning, high anti-interference capacity and non-contact automatic measurement.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Method and system for detecting and positioning leakage based on infrared imaging technique
InactiveCN101281079AAddressing Disadvantages of Immersion InspectionMeet the needs of online testingFluid-tightness measurement using fluid/vacuumImaging processingDisplay device
The invention relates to a leakage detection and location method and a system thereof based on infrared imaging technology, belonging to the detection technology field. The leakage detection and location system comprises a control device, an infrared imagery device, a cooling device, a sensing unit, an air charging system and a display device. Gas with certain pressure is cooled by the cooling device to be used as test medium, each value is driven by the control device to implement aeration completion timing control on a measured object, and the system state is detected by the sensing unit, a infrared picture of the measured object is collected by the infrared imagery device and then transmitted to the control device to undergoing a series of image processing operations for analysis, leakage amount calculation and leakage point location, the test results is showed on the display device. The invention has high detection precision, high-efficiency for leak point locating, strong anti-interference ability and can take non-contact automatic measurement.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Brightness correction and color classification-based fruit surface defect detection method and system
ActiveCN105046700AImprove accuracyMeet the needs of online testingImage enhancementImage analysisBrightness perceptionRgb image
The invention relates to a brightness correction and color classification-based fruit surface defect detection method and system. The method includes the following steps that: a R component image in an RGB image of fruit to be detected is extracted, brightness correction is performed on the R component image, so that the brightness of the R component image can be uniform; HSI transform is performed on the RGB image, so that an H value in the HSI transform corresponding to each pixel in the RGB image is obtained, the H values are compared with the H values of preset colors, so that the color of each pixel can be judged; and the color of each pixel is compared with a preset threshed value corresponding to the color, so that judgment can be performed, a defective region to be confirmed is obtained from the R component image which has been subjected to the brightness correction, the gray values of all pixels except the defective region to be confirmed in the R component image are zeroed, and based on further judgment, the gray values of recognized fruit stem / calyx regions in the defective region to be confirmed are zeroed, and finally, a defective region of the surface of the fruit can be obtained. With the method and the system of the invention adopted, the accuracy of fruit defect detection can be improved.
Owner:BEIJING RES CENT OF INTELLIGENT EQUIP FOR AGRI
Railway track fastener anomaly detection system based on binocular vision and laser speckle
PendingCN107703149AAdd Artificial TextureImprove accuracy and reliabilityOptically investigating flaws/contaminationRailway auxillary equipmentPhysicsSpeckle imaging
The invention discloses a railway track fastener anomaly detection system based on binocular vision and laser speckle, comprising laser speckle projectors, cameras, laser displacement sensors, a wheelencoder, an RFID (radio frequency identification) detector and an industrial personal computer, wherein the laser speckle projectors and the cameras form a binocular stereo vision speckle imaging system for performing three-dimensional stereo measurement on fasteners; the laser displacement sensors are used for measuring mounting supporting heights of the fasteners so as to control imaging of thecameras; the wheel encoder and the RFID detector are used for measuring mileage; the industrial personal computer is used for acquiring and processing images and detecting whether the fasteners are abnormal by means of binocular vision stereo matching. The railway track fastener anomaly detection system based on binocular vision and laser speckle has the advantages that a laser speckle source isused to manually add speckle lines to the surface of fasteners, image block matching precision can be improved, three-dimensional shapes of the fasteners are accurately reconstructed, and various anomalies of different types of fasteners can be effectively detected.
Owner:成都精工华耀科技有限公司
FPC gold finger surface defect detection system and method based on AOI technology
InactiveCN109724994ASolve classification problemsMeet the needs of online testingOptically investigating flaws/contaminationSmall sampleImaging data
The invention relates to an FPC gold finger surface defect detection system and method based on an AOI technology. The system comprises an X-Y-Z multi-axis motion platform and a camera. A central processor carries out motion control and positioning on the platform through a motion control card. The camera carries out digital image acquisition. The central processor carries out preprocessing on theacquired image data. RIO region processing is carried out on a preprocessed image. Feature extraction is carried out on the image data, and image recognition is carried out. According to the FPC goldfinger surface defect detection system and method based on the AOI technology, which are provided by the invention, through an multi-axis operation control device and an image acquisition device, theautomatic optical inspection technology (AOI) is adopted to acquire the surface state of FPC by optical means; based on empirical mode analysis (EMD) and an HU invariant moment feature fusion method,feature extraction is carried out; the classification problems of small sample deficiency and difficult defect identifying are effectively solved; the detection efficiency is improved; and the detection cost is reduced.
Owner:DONGGUAN UNIV OF TECH
Flotation dosing abnormity detection method based on NSST morphological characteristics and depth KELM
ActiveCN110287975AExcellent feature extraction abilityFast trainingCharacter and pattern recognitionMachine learningPattern recognitionAutomatic control
The invention relates to a flotation dosing abnormity detection method based on NSST morphological characteristics and depth KELM. The method comprises the following steps: firstly, acquiring a bubble image on the surface of a flotation tank in real time, and decomposing the image NSST to obtain a low-frequency sub-band image and a multi-scale high-frequency sub-band; secondly, binarizing the low-frequency image to extract bubble bright spots, calculating the number, the area, the standard deviation and the ellipticity of the bright spots, and calculating the fractal dimension, the mean value and the variance of high-frequency sub-band coefficients of all scales to form multi-scale morphological characteristics of the bubble image; then, on the basis of the KELM algorithm, a deep KELM is constructed by referring to a deep learning idea, quantum calculation is introduced into optimization of a genetic algorithm and used for optimizing parameters of the deep KELM, and an adaptive deep KELM is constructed; and finally, establishing a flotation dosing abnormity detection model through the multi-scale morphological characteristics and the self-adaptive depth KELM. The average recognition rate and the operation efficiency are obviously higher than those of an existing detection method, the requirement for flotation production on-line detection is better met, and a foundation is laid for follow-up dosing automatic control.
Owner:FUZHOU UNIV
Refractory brick inside quality online detection device
InactiveCN101701935AMeet the needs of online testingGuaranteed uptimeAnalysing solids using sonic/ultrasonic/infrasonic wavesProcessing detected response signalExternal storageBrick
The invention relates to a refractory brick inside quality online detection device comprising a hardware system and a software system. The refractory brick inside quality online detection device is characterized in that the hardware system adopts a modular structure comprising a main processing module, a voice acquisition module, a PC serial communication module, an auxiliary external module and a knock control module; a main processing chip of the DSP main processing module is a 5509A chip which is used for managing an external memory space through an internally and externally arranged external memory interface, the external memory space is divided into CE0-CE3, and each space is provided with a chip selection use signal / CEn. The software system provides a method for detecting and diagnosing inside defects of a refractory brick by utilizing a refractory brick knock acoustical signal and develops corresponding software. The invention solves the problem that the refractory brick inside quality detection device is outmoded, ensures that a refractory brick inside defect detection device is stable and rapid to run, simple to operate and complete in function and can completely meet the requirement of refractory brick inside quality online detection, thereby being applied to refractory brick production plants for improving the production quality and the efficiency.
Owner:NORTHEASTERN UNIV
Method for judging storage period of tea by hyperspectral image technique
ActiveCN108444924AMeet the needs of online testingEasy to operateColor/spectral properties measurementsNon destructiveImaging technique
The invention discloses a method for judging storage period of tea by a hyperspectral image technique. The method comprises the following steps of establishing a qualitative analysis model by combining the hyperspectral image technique and a support vector machine algorithm, so as to quickly and accurately judge the storage period of the tea. The method has the characteristics that the analysis speed is quick, the efficiency is high, the cost is low, the testing reproductivity is good, the pretreatment of the sample is not needed, and the online non-destructive testing can be conveniently performed.
Owner:ANHUI AGRICULTURAL UNIVERSITY
Automatic online testing system for millimeter wave packaging antenna
InactiveCN111257658AQuick Test BandwidthEliminate echo interferenceAntenna radiation diagramsMillimetre waveRadio frequency
Owner:苏州度风科技有限公司
Long and thin component flaw detection scanning crawl device based on flexible shaft drive
The invention discloses a long and thin component flaw detection scanning crawl device based on flexible shaft drive. The device comprises a first assembly and a second assembly, and the first assembly and the second assembly are connected into a whole through connecting rods. The first assembly comprises two first assembly sub-components identical in structure, first rolling wheel assemblies and second rolling wheel assemblies are arranged on first semi-circular supporting thin plates, the first rolling wheel assemblies are connected with motors through couplers and flexible shafts, the two first assembly sub-components are connected through a transfer hinge, and a closing buckle is arranged on the first semi-circular supporting thin plates. The second assembly comprises two second assembly sub-components identical in structure, third rolling wheel assemblies and fourth rolling wheel assemblies are arranged on second semi-round supporting thin plates, the two second assembly sub-components are connected through a transfer hinge, and a closing buckle is arranged on the second semi-circular supporting thin plates. The device is designed based on flexible shaft drive, and has the advantages of being light, smooth in running, wide in applicability and the like, and can meet the on-line detection requirements of components of different diameters and different detection environments.
Owner:HUAZHONG UNIV OF SCI & TECH
Sample rack managing and conveying device and biochemical immune assembly line
PendingCN112881735ARealize online detectionImprove detection efficiencyMaterial analysisEngineeringTransfer mechanism
The invention discloses a sample rack managing and conveying device and a biochemical immune assembly line. The sample rack managing and conveying device comprises a mounting structure, a sample rack management structure, a sample rack carrying mechanism, an information reading structure and a sample rack relay conveying system. The sample rack relay conveying system comprises a bearing piece; a sample frame rail transfer mechanism provided with a rail transfer rail and a guide rail; and a sample rack conveying mechanism provided with a first conveying mechanism and a second conveying mechanism. According to the invention, the samplerack carrying mechanism carries the sample racks into the orbital transfer track, the orbital transfer track pushes the sample racks to the first conveying mechanism, and the sample racks are conveyed downwards through the first conveying mechanism in a relay manner; and the second conveying mechanism convey the returned sample racks to the orbital transfer track or the guide track, so that relay conveying and recycling of the sample racks between different detection instruments are achieved, the online detection efficiency is improved, the online detection requirement of high-throughput samples in clinic is effectively met, and the waiting time of patients is shortened.
Owner:AUTOBIO LABTEC INSTR CO LTD
Stockwell transform based epilepsy electroencephalogram detection device
InactiveCN106264519AEasy to operateMeet the needs of online testingDiagnostic recording/measuringSensorsFeature extractionProcess module
The invention discloses a Stockwell transform based epilepsy electroencephalogram detection device. The device comprises an electroencephalogram amplifier, a data acquisition card and a computer. An electroencephalogram signal preprocessing module, an electroencephalogram signal segmentation module, a Stockwell transform feature extraction module, a classification module and an after-processing module are arranged in the computer. Feature extraction of time-varying unstable epilepsy electroencephalogram signals is realized by means of Stockwell transform, and epileptic seizures in the electroencephalogram signals are detected through the computer. The device is effective in detection of epilepsy electroencephalogram signals and suitable for online electroencephalogram classification detection.
Owner:SUZHOU RES INST SHANDONG UNIV
Novel sizing moisture regain detecting system
InactiveCN1715892AAccurate measurementLow costMoisture content investigation using microwavesSpecial data processing applicationsWater contentDielectric loss
The present invention relates to the detecting technology of water content in textile, and is especially one new type of sizing moisture regaining detecting system. The sizing moisture regain detecting system includes microwave emitting device and microwave receiving device without contact with the sizing to be detected, data acquiring card to acquire electric signal and convert into digital signal fed to the computer, and computer to calculate the dielectric loss value and the sizing moisture regain. The present invention performs on-line no-contact detection and obtains precise measurement result.
Owner:DONGHUA UNIV
Metal magnetic memory triaxial array sensor based on GMR effect
InactiveCN106707206AMeet the needs of online testingAvoid the disadvantages of uneven magnetizationMagnetic measurementsSensor arrayGiant magnetoresistance
The invention relates to a wire rope defect detection field, to be specific, relates to a metal magnetic memory triaxial array sensor based on GMR effect by aiming at a mine winder wire rope, namely a sensor used for the early diagnosis and the defect analysis of the mine winder wire rope by using giant magnetoresistance effect and metal magnetic memory technology The metal magnetic memory triaxial array sensor based on the GMR effect comprises a sensor array formed by N sensor probes uniformly disposed on a first circumference of an upper layer and N sensor probes uniformly disposed on a second circumference of a lower layer, a microprocessor module, a memory module, a power supply module, a signal processing module, and a temperature compensation module. The metal magnetic memory triaxial array sensor is capable of determining the defect level and the defect position of the wire rope accurately.
Owner:TAIYUAN UNIV OF TECH
Mobile phone light guide plate appearance visual detection equipment and use method thereof
PendingCN111948217AMeet the needs of online testingImprove detection efficiencyOptically investigating flaws/contaminationUsing optical meansHigh volume manufacturingLight guide
The invention discloses mobile phone light guide plate appearance visual detection equipment and a using method thereof. The mobile phone light guide plate appearance visual detection equipment comprises a detection table, the detection table is provided with a material taking station, a size detection and positioning station and an appearance detection station which are sequentially arranged in the length direction of the detection table, and the size detection and positioning station is provided with a CCD visual positioning assembly; the appearance detection station is provided with a CCD visual detection assembly; and a transfer manipulator A and a transfer manipulator B are arranged on the two sides of the detection table respectively. The using method mainly comprises the steps thatthe transfer manipulator A grabs a to-be-detected light guide plate located at the material taking station and sends the light guide plate to the CCD visual positioning assembly for size detection, and the transfer manipulator B transfers the light guide plate subjected to size detection to the CCD visual detection assembly for dotting surface appearance detection. Two indexes of the light guide plate are detected in a full-automatic step-by-step detection mode, the independent detection assembly is matched, the detection efficiency and the detection precision are improved, the online detection requirement of mass production is met, operation is easy, the overall layout is compact, and the occupied space is small.
Owner:雷澳视觉科技(东莞)有限公司
Worm gear type cam contour profile detector
InactiveCN107677215AReduce volumeLow costUsing optical meansAgricultural engineeringDistance sensors
The invention discloses a worm gear type cam profile detector, which includes a box body, a transmission unit and a control unit, and the transmission unit includes a worm wheel, a worm, a first bearing, a second bearing, a third bearing, a first The transmission shaft, the second transmission shaft, the gear shaft, the spur gear, the fixture, the fourth bearing, the first bevel gear and the second bevel gear; the control unit includes a distance sensor, a circular grating and a control module. The rotation of the transmission unit drives the rotation of the measured cam on the fixture, and the rotation information of the measured cam is collected to the control module through the distance sensor and the circular grating. This profile detector is small in size, low in cost, fast in detection speed, high in measurement accuracy and good in practicability, and can meet the needs of on-line detection in production lines.
Owner:GUILIN UNIV OF ELECTRONIC TECH
A High Temperature Water Vapor Laser Spectrum Online Detection System
InactiveCN104280362BRealize online accurate measurementMeet the needs of online testingColor/spectral properties measurementsBeam splitterExtinction
The invention discloses an online high-temperature water vapor laser spectrum detection system which comprises a near-infrared DFB semiconductor laser with the central wavelength of 1397nm, wherein light beams emitted by the laser are divided into reference beams and detection beams by an optical fiber beam splitter; by the detection beams, two adjacent characteristic absorption spectral lines of water vapor nearby 1397nm position in the near-infrared spectrum area are simultaneously detected, so that the temperature of the water vapor is synchronously measured and real-time temperature parameters needed in temperature correction of the water vapor absorption spectrum are provided; with the adoption of a spectral digital alignment method based on double light paths, accurate alignment in the spectrum accumulation averaging process is realized, and the influence of drift of the output wavelength on the detection in continuous operation of the infrared semiconductor laser is avoided. Moreover, by utilizing background signal fitting and spectrum normalizing treatment, the influence of gas turbulence and environmental dust extinction on detection is eliminated, and online accurate measurement of high-temperature water vapor concentration is realized through strong real-time temperature correction of spectral lines.
Owner:HEFEI UNIV OF TECH
Fruit surface defect detection method and system based on brightness correction and color classification
ActiveCN105046700BMeet the needs of online testingImprove accuracyImage enhancementImage analysisSurface brightnessRgb image
The invention relates to a brightness correction and color classification-based fruit surface defect detection method and system. The method includes the following steps that: a R component image in an RGB image of fruit to be detected is extracted, brightness correction is performed on the R component image, so that the brightness of the R component image can be uniform; HSI transform is performed on the RGB image, so that an H value in the HSI transform corresponding to each pixel in the RGB image is obtained, the H values are compared with the H values of preset colors, so that the color of each pixel can be judged; and the color of each pixel is compared with a preset threshed value corresponding to the color, so that judgment can be performed, a defective region to be confirmed is obtained from the R component image which has been subjected to the brightness correction, the gray values of all pixels except the defective region to be confirmed in the R component image are zeroed, and based on further judgment, the gray values of recognized fruit stem / calyx regions in the defective region to be confirmed are zeroed, and finally, a defective region of the surface of the fruit can be obtained. With the method and the system of the invention adopted, the accuracy of fruit defect detection can be improved.
Owner:BEIJING RES CENT OF INTELLIGENT EQUIP FOR AGRI
A run-length-based method for marking abnormal regions of thermal images of crystallizers
ActiveCN110918973BQuick tagMark accuratelyThermometers using electric/magnetic elementsCasting safety devicesAlgorithmEngineering
The present invention is a run-based method for marking abnormal areas of crystallizer thermal images, which is characterized in that it includes: thermal imaging of mold copper plate temperature rate thermal imaging, run-length segment search for billet adhesion abnormal areas, rapid removal of pseudo-adhesion abnormal areas, and run-length segment connectivity It can combine the run-length connectivity judgment method with the detection of the cohesive region, and use the continuity and inclusiveness of the cohesive region to determine the connectivity of the run-length segment. It is scientific and reasonable, has strong applicability, good effect, fast execution speed, and reduces the storage space and the calculation amount of the algorithm, and can realize fast and accurate marking of the bonding area to meet the needs of online detection of breakouts. It is especially suitable for rapid marking of abnormal areas of slabs and round slabs.
Owner:NORTHEAST DIANLI UNIVERSITY
Vacuum actuator online detection device and detection method thereof
ActiveCN104458133BGet goodMeet the needs of online testingMachine part testingFluid-tightness measurement using fluid/vacuumInsertion stentActuator
The invention relates to an on-line detection device and a detection method for a vacuum actuator, which is characterized in that a base is provided, a positioning bracket is arranged on the base, and a sealing performance testing component and a displacement monitoring component are arranged around the positioning bracket. During detection, the vacuum actuator is placed on the positioning bracket for positioning, and the vacuum actuator is sealed by using the sealing performance testing component and the displacement monitoring component. Afterwards, the vacuum actuator is inflated step by step to obtain test data. Finally, the sealing performance testing component and the displacement monitoring component are released, and the vacuum actuator is removed. As a result, step-by-step detection can be adopted to obtain the air pressure data inside the vacuum actuator under different working conditions, so as to perform all-round detection and improve the quality of quality inspection. Furthermore, the present invention has a simple structure, and can meet the needs of online detection on the assembly line through the cooperation of subsequent programs.
Owner:SUZHOU IND PARK GAGB MANDE CO LTD
Open bin type CT detection equipment
PendingCN112666192AMeet testing needsMeet the needs of online testingMaterial analysis using wave/particle radiationRadiation leakageRadiology
The invention provides open bin type CT detection equipment, and solves the problems that the size of a part which can be detected by existing CT detection equipment is relatively small and the existing CT detection equipment can only perform offline detection. The open bin type CT detection equipment comprises a bin, a shielding layer, an anti-radiation rubber strip, a radiation source, a detector and a controller. The bin is trapezoid. A left side plate and a right side plate of the bin are arranged in the X direction, and the width of the left side plate in the Y direction is smaller than that of the right side plate in the Y direction. The radiation source is arranged on the left side plate, the detector is arranged on the right side plate, rays emitted by the radiation source are perpendicular to the detector, and the emitting center of the radiation source and the receiving center of the detector are coaxially arranged. Openings are formed in a front side plate and a rear side plate of the bin, and a plurality of anti-radiation rubber strips are arranged at the openings and used for preventing radiation leakage. The shielding layer is arranged in the bin and is used for shielding radiation generated by the radiation source; the controller is arranged on the outer side of the bin and used for controlling the working state of the radiation source.
Owner:NAT INST CORP OF ADDITIVE MFG XIAN
A camshaft end face detection device and method
ActiveCN108759615BMeet the needs of online testingEasy to measureMechanical measuring arrangementsFace detectionBall bearing
The invention provides an end surface total runout detecting device, and provides a cam shaft end surface detecting device which comprises a bottom plate; a bearing pedestal, a positioning block and agroup of V-shaped blocks for holding a cam shaft are fixed on the bottom plate; an angular contact ball bearing is mounted on the bearing pedestal; a core shaft is mounted in an inner hole of the angular contact ball bearing; a bearing sleeve sleeves the angular contact ball bearing; the outer wall of the bearing sleeve is connected with a differential meter fixing rod; a differential meter is fixed to the tail end of the differential meter fixing rod; and an inner ring adjusting gasket and an outer ring adjusting gasket are arranged in the angular contact ball bearing. The invention furtherprovides a detecting method which comprises the following steps of preadjusting, checking and detecting. The detecting device has no requirement on a detecting environment, can be directly mounted ina cam shaft storage unit at the tail end of a production line to be used, and can directly detect a product; after the bearing sleeve is swung by a hand, and a workpiece is rotated, the reading on thedifferential meter is read; and the structure is simple, the use is convenient, and the result is accurate and reliable.
Owner:荆州环球汽车零部件制造有限公司
A method of judging the storage period of tea using hyperspectral image technology
ActiveCN108444924BMeet the needs of online testingEasy to operateColor/spectral properties measurementsPattern recognitionEngineering
The invention discloses a method for judging storage period of tea by a hyperspectral image technique. The method comprises the following steps of establishing a qualitative analysis model by combining the hyperspectral image technique and a support vector machine algorithm, so as to quickly and accurately judge the storage period of the tea. The method has the characteristics that the analysis speed is quick, the efficiency is high, the cost is low, the testing reproductivity is good, the pretreatment of the sample is not needed, and the online non-destructive testing can be conveniently performed.
Owner:ANHUI AGRICULTURAL UNIVERSITY
An online powder detection device based on laser-induced breakdown spectroscopy
ActiveCN112595705BFast preparationFor quick inspectionPreparing sample for investigationAnalysis by thermal excitationLaser-induced breakdown spectroscopyLight signal
Owner:HUAZHONG UNIV OF SCI & TECH
A scanning and crawling device for flaw detection of slender components based on flexible shaft drive
The invention discloses a long and thin component flaw detection scanning crawl device based on flexible shaft drive. The device comprises a first assembly and a second assembly, and the first assembly and the second assembly are connected into a whole through connecting rods. The first assembly comprises two first assembly sub-components identical in structure, first rolling wheel assemblies and second rolling wheel assemblies are arranged on first semi-circular supporting thin plates, the first rolling wheel assemblies are connected with motors through couplers and flexible shafts, the two first assembly sub-components are connected through a transfer hinge, and a closing buckle is arranged on the first semi-circular supporting thin plates. The second assembly comprises two second assembly sub-components identical in structure, third rolling wheel assemblies and fourth rolling wheel assemblies are arranged on second semi-round supporting thin plates, the two second assembly sub-components are connected through a transfer hinge, and a closing buckle is arranged on the second semi-circular supporting thin plates. The device is designed based on flexible shaft drive, and has the advantages of being light, smooth in running, wide in applicability and the like, and can meet the on-line detection requirements of components of different diameters and different detection environments.
Owner:HUAZHONG UNIV OF SCI & TECH
Abnormal detection method of flotation dosing based on nsst morphological features and depth kelm
ActiveCN110287975BExcellent feature extraction abilityFast trainingCharacter and pattern recognitionMachine learningAutomatic controlAnomaly detection
The invention relates to a flotation dosing abnormality detection method based on NSST morphological features and depth KELM. Firstly, the bubble image on the surface of the flotation cell is collected in real time, and the NSST image is decomposed to obtain the low-frequency sub-band image and the multi-scale high-frequency sub-band; secondly, the low-frequency image is binarized to extract bubble bright spots, and the number and area of each bright spot are calculated , standard deviation and ellipticity, and calculate the fractal dimension, mean and variance of the high-frequency subband coefficients of each scale to form the multi-scale morphological features of the bubble image; then, on the basis of the KELM algorithm, a deep KELM is constructed with deep learning , the quantum computing is introduced into the optimization of the genetic algorithm, and used to optimize the parameters of the depth KELM, and construct the adaptive depth KELM; finally, establish the flotation dosing anomaly detection model through the multi-scale morphological features and the adaptive depth KELM. The average recognition rate and operating efficiency of the present invention are significantly higher than the existing detection methods, more in line with the requirements of on-line detection in flotation production, and lay a foundation for the subsequent automatic control of dosing.
Owner:FUZHOU UNIV
Refractory brick inside quality online detection device
InactiveCN101701935BMeet the needs of online testingGuaranteed uptimeAnalysing solids using sonic/ultrasonic/infrasonic wavesProcessing detected response signalExternal storageBrick
The invention relates to a refractory brick inside quality online detection device comprising a hardware system and a software system. The refractory brick inside quality online detection device is characterized in that the hardware system adopts a modular structure comprising a main processing module, a voice acquisition module, a PC serial communication module, an auxiliary external module and a knock control module; a main processing chip of the DSP main processing module is a TMS320V5509A chip which is used for managing an external memory space through an internally and externally arranged external memory interface, the external memory space is divided into CE0-CE3, and each space is provided with a chip selection use signal / CEn. The software system provides a method for detecting and diagnosing inside defects of a refractory brick by utilizing a refractory brick knock acoustical signal and develops corresponding software. The invention solves the problem that the refractory brick inside quality detection device is outmoded, ensures that a refractory brick inside defect detection device is stable and rapid to run, simple to operate and complete in function and can completely meet the requirement of refractory brick inside quality online detection, thereby being applied to refractory brick production plants for improving the production quality and the efficiency.
Owner:NORTHEASTERN UNIV LIAONING
Magnetic focusing sensor for simultaneous detection of multiple defects and detection system
PendingCN113281399AImprove detection efficiencySmall magnetic resistanceMaterial magnetic variablesNondestructive testingMagnet
The invention belongs to the related technical field of a nondestructive testing technology, and discloses a magnetic focusing sensor for simultaneous detection of multiple defects and a detection system. The sensor comprises a permanent magnet, a magnetic guiding core and a sensing element, the permanent magnet is an annular magnet, a notch is formed in the lower end of the annular magnet, and the magnetic guiding core is arranged on a connecting line of the circle center of the annular magnet and the notch and used for guiding a magnetic field gathered in the center of the annular magnet to the magnetic guiding core. The magnetic guiding core is of a multi-layer sheet-shaped structure, a detection probe is arranged at the bottom of each layer of sheet-shaped structure, the detection probes are used for detecting surface appearance defects of a magnetic material to be detected, and the sensing elements are arranged on the probes of the magnetic guiding core and used for sensing changes of a magnetic field in each detection probe. According to the invention, detection and identification of the micro surface topography of the magnetic material are realized, the resolution ratio, the detection precision and the sensitivity are higher, and the method can adapt to wider processing and manufacturing environments and working conditions.
Owner:HUAZHONG UNIV OF SCI & TECH
Needle type magnetic repulsion focusing detection sensor and detection system
ActiveCN113281398ASensitive to magnetic field changesImprove detection accuracyMaterial magnetic variablesCondensed matter physicsMaterials science
The invention belongs to the related technical field of nondestructive testing, and discloses a needle type magnetic repulsion focusing detection sensor and a detection system. The detection sensor comprises a permanent magnet, a magnetic guiding core and a sensing element, the permanent magnet is used for generating mutually-exclusive magnetic fields, the magnetic guiding core is arranged at the center of the permanent magnet and used for gathering the mutually-exclusive magnetic fields generated by the permanent magnet at the center and guiding the magnetic fields to the magnetic guiding core, and the sensing element is arranged on the magnetic guiding core. The sensing element is arranged on the magnetic guiding core, when the detection sensor is adopted to detect the surface appearance of a magnetic material to be detected, the change of the surface appearance causes the change of a magnetic field in the magnetic guiding core, and the sensing element is used for detecting the change of the magnetic field in the magnetic guiding core and converting the change into an electric signal; therefore, the surface appearance of the to-be-detected magnetic material is detected. According to the invention, the problem of low detection resolution of the tiny morphology on the surface of the magnetic material is solved.
Owner:HUAZHONG UNIV OF SCI & TECH
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