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45results about How to "Efficient online detection" patented technology
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Mobile phone curved glass typical defect online detection device and method
PendingCN110018178ASolve and overcome the disadvantages of artificial naked eye detectionFast online detectionOptically investigating flaws/contaminationRotary stageComputer graphics (images)
The invention discloses a mobile phone curved glass typical defect online detection device and method. The online detection device comprises a work-piece transmission device, wherein the work-piece transmission device comprises a transmission guide rail, a plurality of transparent objective tables, a motion control card and a motor, and a rotating table; a plane part detection device, a curve edgedetection device and a R angle part detection device for forming three stations are orderly arranged along a transmission direction of the work-piece transmission device; the online detection methodperforms previous training learning on the background and scratch, burning, edge breakage, pit and like typical defect sample images through a convolutional neural network, and original images collected at three stations are divided into multiple sub-images consistent with the size of the training sample, the segmented sub-images are quickly identified, thereby judging whether the original imageshave defects or judging the defect variety. The scratch, burning, edge breakage, pit and like typical defect sample images can be online detected in real time, and the detection device has the features of being fast, efficient, precise and stable.
Owner:SOUTH CHINA UNIV OF TECH
Method for detecting abnormal user behaviours mined on the basis of variable-length sequence mode
ActiveCN105187242AEfficient online detectionSolve the problem of not accurately describing the complex behavior of usersData switching networksAnomaly detectionVariable length
The invention provides a method for detecting abnormal user behaviours mined on the basis of a variable-length sequence mode. The method comprises a stage of training normal user behaviours and a stage of detecting abnormal user behaviours, wherein the stage of training the normal user behaviours comprises the following steps: (1), pre-processing normal user behaviour log data in a database so as to obtain a plurality of normal user behaviour variable-length sequence streams; and (2), constructing a mode for generating normal user behaviours according to each normal user behaviour variable-length sequence stream in the plurality of normal user behaviour variable-length sequence streams and the occurrence number of the normal user behaviour variable-length sequence stream; and the stage of detecting the abnormal user behaviours comprises the following steps: (1), generating a plurality of variable-length sequences based on user behaviour online data to be detected; and (2), matching and comparing the variable-length sequences with various variable-length sequence streams in the normal user behaviour mode so as to judge whether the user behaviour variable-length sequence to be detected is abnormal user behaviour data or not. By means of the method, online abnormal detection can be realized; and complex behaviours of users can be accurately described.
Owner:NAT UNIV OF DEFENSE TECH
Fault detection method of gearbox
ActiveCN108896299AEffective online detectionImprove real-time and convenienceMachine gearing/transmission testingTemperature measurement of moving solidsData monitoringHigh speed train
The embodiment of the invention provides a fault detection method of a gearbox. The method comprises: a train running parameter and a gearbox temperature parameter of a to-be-detected gearbox are inputted into a gearbox fault detection model; and a fault detection result of the to-be-detected gearbox is outputted, wherein the gearbox fault detection model is obtained by training based on a train running parameter sample of a gearbox sample, a gearbox temperature parameter sample and a fault detection result sample. According to the method provided by the embodiment of the invention, the trainrunning parameter and the gearbox temperature parameter are inputted into the gearbox fault detection model and the fault detection result of the to-be-detected gearbox is outputted, so that the real-time effective online detection of the gearbox is realized, the real-time performance and convenience of running data monitoring of the train are improved, and the stable operation of the D-series high-speed train and the railway system are guaranteed.
Owner:CRRC QINGDAO SIFANG CO LTD
High-frequency resistance straight seam welding quality state online detection method
InactiveCN105787940AEfficient online detectionEffective trainingImage enhancementImage analysisElectrical resistance and conductanceRadial basis function neural
The invention provides a high-frequency resistance straight seam welding quality state online detection method. The method mainly comprises the steps of welding image collection, main component analysis image dimension reduction, radial basis function neural network training and prediction outputting. According to the invention, welding spot fusion phenomenon state images collected at a high speed are utilized for the detection of the welding quality, the collected image samples are preprocessed, then main component analysis is utilized for dimension reduction of the image data, training is carried out in such manner that the image data after the dimension reduction is used as input of a radial basis function neural network and the wielding quality states corresponding to the image samples are used as output of the network, and finally the trained network is used for prediction. By adopting the method, the high-frequency resistance straight seam welding quality state can be effectively detected on line.
Owner:CHANGAN UNIV
Valve inner leakage testing simulating device and gas valve inner leakage rate acoustic emission diagnosis method thereof
ActiveCN105953987AEfficient online detectionResolve detectionDetection of fluid at leakage pointBuffer tankAcoustic emission
The invention relates to a valve inner leakage testing simulating device and a gas valve inner leakage rate acoustic emission diagnosis method thereof. The valve inner leakage testing simulating device comprises a buffer tank. One end of the buffer tank is connected with an air compressor, and the other end is connected with a flowmeter. The buffer tank is provided with a pressure gauge. A testing valve is arranged between the buffer tank and the flowmeter. The valve inner leakage testing simulating device and the gas valve inner leakage rate acoustic emission diagnosis method thereof can settle a problem of testing gas valve inner leakage and realize valve inner leakage testing and evaluation in a petrochemical industry; the valve inner leakage testing simulating device is used for performing valve inner leakage acoustic emission tests; acoustic emission parameters are acquired; a valve inner leakage rate evaluation formula model is established by means of a formula; and a database is applied for performing fitting, thereby realizing valve inner leakage rate diagnosis. The valve inner leakage testing simulating device and the gas valve inner leakage rate acoustic emission diagnosis method thereof have advantages of effectively performing online testing on valve inner leakage, preventing economic loss caused by work stoppage, ensuring stable pressure in tests and realizing estimation on the valve inner leakage rate.
Owner:CHINA PETROLEUM & CHEM CORP +1
Contact type temperature measurable plate shape detecting device
ActiveCN107185970AHigh-precision shape error temperature compensationReduce shape errorMeasuring devicesMetal rolling arrangementsEngineeringContact type
The invention discloses a contact type temperature measurable plate shape detecting device. The contact type temperature measurable plate shape detecting device comprises a temperature measurable plate shape detecting roller, a thermal imager and a plate shape detecting and controlling system. The temperature measurable plate shape detecting roller can simultaneously provide on-line plate shape signals and transient temperature signals; the thermal imager is used for detecting and providing temperature field images of cold-rolling strip steels; and the plate shape detecting and controlling system is used for receiving the plate shape signals and temperature signals, and conducting signal processing and synchronous calculating, and synchronously implementing the plate shape error compensation of the transient temperature for real-time plate shape signals of on-line strip steels, so that plate shape detecting precision of the strip steels can be improved. According to the contact type temperature measurable plate shape detecting device, the plate shape states of the strip steels can be detected in real time, the transient temperature changes can be measured synchronously, effective temperature compensations for high precision plate shape errors are implemented, plate shape errors caused by temperature changes is reduced, and then plate shape detecting precision of the cold-rolling strip steels is improved.
Owner:YANSHAN UNIV
On-line monitoring and diagnosis method for coaxial capacitive sensor and engine oil abrasive particles
ActiveCN109959587AAvoid influenceEfficient online detectionMaterial analysis by electric/magnetic meansParticle size analysisElectricityDiagnosis methods
The invention relates to the field of engine oil monitoring, and in particular relates to an on-line monitoring and diagnosis method for a coaxial capacitive sensor and engine oil abrasive particles.The coaxial capacitive sensor comprises a sensor oil inlet and a sensor oil outlet. The sensor oil inlet and the sensor oil outlet are communicated with the inside coaxial capacitive sensor respectively. A central bearing, electrode supporting insulating substrates and electrode plates are arranged in the coaxial capacitive sensor. A number of electrode supporting insulating substrates and the central bearing divide the inside coaxial capacitive sensor into a number of detecting subspaces. The electrode plates are attached to the electrode supporting insulating substrates respectively. According to the invention, the coaxial capacitive sensor can be arranged inside an oil pipeline, which avoids the influence of environmental factors on the test result; the characteristics of oil abrasive particles can be efficiently detected on-line; online whole watershed monitoring and diagnosis of oil abrasive particles are realized; the severity of the wear condition of the friction pair surface ofthe rotating part of an engine is reflected; and safe and reliable operation of the engine is ensured.
Owner:XIAMEN UNIV
An online moisture detection device and method for a bulk material
PendingCN108663281AOnline real timeReal-time online detectionWeighing by removing componentPreparing sample for investigationMicrowaveClosed loop
The invention provides an online moisture detection device for a bulk material. The device is characterized in that: the device includes an annular channel in the form of a closed loop, the annular channel is divided into a first section (L1), a second section (L2), a third section (L3), and a fourth section (L4); the annular channel is composed of an annular cover body (A) and an annular bottom plate (B), the annular bottom plate (B) is connected with a driving device (C) through a support bar (B1), multiple through holes (B2) are arranged along the circumference of the annular bottom plate (B) and multiple charging containers (2) are correspondingly placed on these through holes (B2), wherein the first section (L1) is a charging area, the second section (L2) is a microwave drying area, the third section (L3) is a detection area, and the fourth section (L4) is a discharge area. The moisture of different types of the bulk material can be detected in real time, rapidly, online and accurately, the measurement precision can reach the moisture measurement precision of a manual sampling, drying and weighting method, and the existing problem is solved in a large degree.
Owner:ZHONGYE-CHANGTIAN INT ENG CO LTD
Curved screen edge detection device
PendingCN111413072AConvenient and efficient detectionDoes not require too much manual operationGeometric properties/aberration measurementComputer hardwareEngineering
The invention relates to a curved screen edge detection device, which belongs to the technical field of display screen detection. The curved screen edge detection device comprises a detection table, acarrying unit which is fixedly connected to the detection table, and two detection units which are oppositely arranged. A detection channel is reserved between the two detection units, the carrying unit penetrates through the detection channel, the two detection units are connected to the detection table, and the detection ends of the two detection units face the detection channel. The curved screen edge detection device can automatically detect the edge of the curved screen, and the curved screen edge detection efficiency is improved.
Owner:BEIJING ZHAOWEI XINYUAN COMM TECH
On-line detection method and detection system of hydroquinone in stockpile manure
InactiveCN101349700AImplement soft sensingLow costMaterial analysis by electric/magnetic meansSpecial data processing applicationsCross-linkCompost
The invention relates to a method for detecting hydroquinone in compost on line, which comprises putting a biosensor in measured solution, utilizing an electrochemical analyzer to analyze current variation data which are adopted by the biosensor, getting response current change characteristic values, response current stabilization time and steady-state current values, outputting the parameter values in a neural network analysis apparatus, and getting the concentration value of hydroquinone after analyzing and calculating. The invention also relates to an on-line detection system which is used in the detecting method, which comprises a three-electrode device, an electrochemical analyzer and a neural network analysis apparatus, wherein the three-electrode device is connected with the electrochemical analyzer, and the electrochemical analyzer is connected with the neural network analysis apparatus, the three-electrode device utilizes a carbon paste electrode which decorates a laccase-Fe3O4 magnetic nano-particle cross-linking body to a working electrode. The one-line detection method and the on-line detection system have the advantages of convenience, high effective, sensitivity, strong anti-interference capability, low production cost and the like.
Owner:HUNAN UNIV
Scanning leakage detection efficient negative-pressure exhaust hood
The invention discloses a scanning leakage detection efficient negative-pressure exhaust hood which comprises a box body. The hollow portion of the box body is internally provided with an efficient filter. The two sides of the efficient filter are fixed through fixing pressing plates. Sealing frames are arranged above the positions where the efficient filter is connected with the fixing pressing plates. A gas collection box and a transmission box are sequentially installed on one sealing frame from the box wall to the interior of the box body. A support is fixedly arranged on the other sealing frame. A linear scanning device and a sampling pipe are installed between the transmission box and the support. One end of the sampling pipe is connected with the linear scanning device, and the other end of the sampling pipe is communicated with the gas collection box. According to the scanning leakage detection efficient negative-pressure exhaust hood, noxious gas can be efficiently filtered out and exhausted inside a working area, noxious substances are prevented from polluting environment and an exhaust pipeline, and safety of environment and safety of an experimenter are protected; the linear scanning leakage detection mode is adopted to conduct in-situ leakage detection on the efficient filter, the mode of synchronous disinfection with a laboratory is adopted to conduct sterilization, and the scanning leakage detection efficient negative-pressure exhaust hood has the advantages of being little in investment, protecting environment, conducting efficient exhaust and the like.
Owner:苏州市金燕净化设备工程有限公司
Metallic oxide lightning arrester with built-in insulation base
InactiveCN103077791AEfficient online detectionAvoid short circuitOvervoltage protection resistorsMetal oxide surge arresterRainy weather
The invention discloses a metallic oxide lightning arrester with a built-in insulation base. The metallic oxide lighting arrester with the built-in insulation base is characterized by comprising an aluminum cushion block, a screw, an insulation base, an aluminum electrode, a counter and base bolt, wherein the aluminum cushion block and the insulation base are arranged in the tail part of a core unit of the lightning arrester and clamped between a resistor disc and the aluminum electrode, a screw hole is formed in the aluminum block, one end of the screw is screwed into the aluminum, and the other end of the screw is arranged outside a silicone rubber case of the lightning arrester; the screw is connected with one end of the counter, and the other end of the counter is connected to the base bolt of the lightning arrester. According to the lightning arrester with the structure, the short circuit phenomenon of the counter in the rainy weather can be effectively prevented, and accordingly the effective on-line detection of the discharge counter on the lightning arrester can be guaranteed.
Owner:NANYANG JINNIU ELECTRIC
Volatile organic compound double-cold trap sample introduction unit, system and method
The invention relates to a volatile organic compound double-cold trap sample introduction unit, system and method. According to the sample introduction unit, a two-way valve V1 is arranged between a sample inlet and a first four-way valve, and a two-way valve V2 is arranged between the sample inlet and a second four-way valve; the first four-way valve communicates with the two-way valve V1, a high-carbon enriched cold trap and a first detector, and the second four-way valve communicates with the two-way valve V2, a low-carbon enriched cold trap and a second detector; a two-way valve V3 is arranged between the high-carbon enriched cold trap and the first four-way valve, and a two-way valve V4 is arranged between the low-carbon enriched cold trap and the second four-way valve; a two-way valve V5 is arranged between the first four-way valve and an exhaust hole, and a two-way valve V6 is arranged between the second four-way valve and the exhaust hole; and the first four-way valve, a firstcarrier gas inlet and the first detector communicate through a three-way valve V7, and the second four-way valve, a second carrier gas inlet and the second detector communicate through a three-way valve V8. According to the sample introduction unit, system and method, the enrichment and detection of pollutants with the relatively low concentration can be realized; and the sample introduction system can achieve full-time-period and no-time blind spot detection.
Owner:BEIJING SDL TECH
Malicious behavior detection method based on non-intrusive power terminal time sequence monitoring
InactiveCN111932051AImplement Malicious Behavior DetectionEfficient online detectionCharacter and pattern recognitionResourcesTest powerData set
The invention discloses a malicious behavior detection method based on non-intrusive power terminal time sequence monitoring. The method comprises the following steps that S1, edge computing equipmentconstructs a database of historical electrical quantities of power terminal equipment; S2, a power consumption behavior data set is constructed for each power terminal device; S3, event detection iscarried out on the electrical quantity time series of each power terminal, a sample set is obtained after feature extraction, and a load classifier is trained; S4, event detection is carried out on the electric power total outlet electric quantity time series, features are extracted and input into the trained classifier model, and the equipment type to which the electric power terminal to be detected belongs is determined; S5, the power consumption information of the to-be-tested power terminal is counted; S6, the power consumption behavior of the to-be-detected power terminal is detected, andwhether the power consumption equipment is abnormal or not is determined according to the power consumption behavior; and S7, the edge computing device records and reports an exception. On the basisof non-intrusive power terminal time sequence monitoring, online detection of malicious behaviors of the power terminal equipment is realized through comparison with power utilization behaviors formedby the historical power information.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
Correction method of non-uniform illumination images of online detection of conveyor belt faults
PendingCN107610116AThe calibration method is simpleReliable completionImage analysisFalse detectionCorrection method
The invention discloses a correction method of non-uniform illumination images of online detection of conveyor belt faults, and belongs to the field of fault detection. The method solves technical problems that illumination of the collected images is not uniform, image quality is poor, fault detection is impacted and missed detection or false detection of the faults is liable to be caused due to factors of conveyor belt surface geometry, light source lighting differences, light source placement positions, complex on-site environments and the like in online detection of the conveyor belt faults. According to the method, a linear-array camera is used to collect the conveyor belt running images, images, which does not contain the faults, of successive multiple rows are selected to calculate amean value of column vectors, then an illumination distribution curve fitting function and column illumination evaluation values are calculated, then a target value of non-uniform illumination correction and non-uniform illumination correction coefficients are calculated, and finally, non-uniform illumination correction is completed. The method of the invention is simple and fast, is suitable forfast correction of the non-uniform illumination images detected online by adopting the linear-array camera, and facilitates highly efficient and reliable completion of online detection of the conveyor belt faults.
Owner:TIANJIN POLYTECHNIC UNIV +1
An online moisture detection device and method for a bulk material
PendingCN108663280AOnline real timeReal-time online detectionWeighing by removing componentPreparing sample for investigationMicrowaveClosed loop
The invention provides an online moisture detection device for a bulk material. The device includes four slideways which form a square closed loop, and multiple charging containers (2) are placed in the closed loop; a first slideway (L1) is a charging area, a second slideway (L2) is a microwave drying area, a third slideway (L3) is a detection area, a fourth slideway (L4) is a discharge area; eachslideway is provided with a linear motor with a driving bar, and the linear motors are used for pushing the charging containers (2) to slide from one position to a next position. The moisture of different types of the bulk material can be detected in real time, rapidly, online and accurately, and the measurement precision can reach the moisture measurement precision of a manual sampling, drying and weighting method.
Owner:ZHONGYE-CHANGTIAN INT ENG CO LTD
Photoelectric performance online detection system for LED bulb lamp
InactiveCN109444704AFast online detectionEasy to detect onlineDiode testingPhotometryPower factorEngineering
The invention provides a photoelectric performance online detection system for an LED bulb lamp. The system has the advantages of fast detection, convenience, high efficiency and low cost. The systemcomprises an illumination intensity acquisition module, a voltage acquisition module, a current acquisition module, a main control module and a display module; the illumination intensity acquisition module is used for acquiring the illumination intensity of the LED bulb lamp; the voltage acquisition module is used for acquiring the voltage of the LED bulb lamp; the current acquisition module is used for acquiring the current of the LED bulb lamp; the main control module is connected with the illumination intensity acquisition module, the voltage acquisition module and the current acquisition module; the main control module is used for obtaining the active power and power factor of the LED bulb lamp according to the voltage and current of the LED bulb lamp, and judging whether the photoelectric performance of the LED bulb lamp is qualified according to the illumination intensity, active power and power factor of the LED bulb lamp; and the display module is connected with the main control module and is used for displaying the illumination intensity, active power and power factor of the LED bulb lamp.
Owner:JIANGSU UNIV OF TECH
FPGA (Field Programmable Gate Array) single-particle overturning soft error detection method based on redundancy interconnection resources
ActiveCN104699571AEfficient online detectionRedundant hardware error correctionLogic cellInterconnection
The invention discloses an FPGA (Field Programmable Gate Array) single-particle overturning soft error detection method based on redundancy interconnection resources. The FPGA single-particle overturning soft error detection method comprises the following steps: step 1, establishing a connection relation in interconnection resources in an FPGA; step 2, not using a logic unit and directly inserting a comparing circuit into an FPGA device; step 3, finding a copying line for the existing interconnection resources; and step 4, combining the copying line and the comparing circuit to carry out dual backup comparison on the FPGA based on the redundancy interconnection resources so as to realize error detection. By the aid of the FPGA single-particle overturning soft error detection method, a phenomenon that more redundancy exists in the interconnection resources of the design is sufficiently designed, and an efficient redundancy interconnection resource search algorithm is explored; an FPGA structure is simply modified so that the efficient online detection on single-particle overturning soft errors is realized.
Owner:SHANGHAI JIAO TONG UNIV
Laser cleaning control method and control system based on LIBS (laser-induced breakdown spectroscopy) technology online monitoring
PendingCN114367498AImprove efficiencyGood effectAnalysis by thermal excitationCleaning processes and apparatusTarget surfaceControl system
The invention discloses a laser cleaning control method and system based on LIBS technology online monitoring, and relates to the technical field of laser cleaning, the laser cleaning control system is researched and developed for achieving the laser cleaning control method, and the laser cleaning control system comprises a mainframe box, a laser cleaning system and an LIBS online monitoring system; the mainframe box is used for bearing the laser cleaning system and the LIBS online monitoring system, and the LIBS online monitoring system is used for collecting and monitoring plasma signals in the cleaning process of the laser cleaning system. According to the laser cleaning control method and system based on LIBS technology on-line monitoring, the dirt cleaning effect and cleaning efficiency of the surface of a cleaned target are greatly improved, on-line monitoring of the laser process is achieved, the laser cleaning process is more automatic, protection on a cleaned target base body is better improved, and the laser cleaning quality is improved. And the service life of the base body is further prolonged.
Owner:CIVIL AVIATION FLIGHT UNIV OF CHINA
Valve inner leakage rate evaluation device and grade evaluation method
PendingCN113740004AEfficient online detectionAvoid economic lossDetection of fluid at leakage pointMeasurement of fluid loss/gain rateAcquisition apparatusPetrochemical
The invention discloses a valve inner leakage rate evaluation device and a grade evaluation method, and relates to the technical field of valve leakage detection of petrochemical enterprises. The invention just aims to solve the technical problem that in the prior art, a testing device cannot conduct grading diagnosis on valve inner leakage. The evaluation device comprises an air storage tank, an air compressor, a second valve, a flow meter and a test valve; an acoustic sensor is installed on the test valve, and the acoustic sensor is connected with acoustic acquisition equipment through a data line. After an evaluation test is started, acoustic signals are collected through the acoustic acquisition equipment, parameter information such as a pressure value and a gas flow value is recorded, function fitting is carried out according to an inner leakage flow Q-AErms curve, and then a Q-AErms fitting function is obtained; and on the basis of a flow grade division standard, the AErms evaluation standard of the internal leakage of the test valve is obtained. According to the device and method, the inner leakage level of the valve can be judged on line through the acoustic parameters without shutdown; and the device and the method can be popularized and used in petrochemical enterprises.
Owner:CHINA PETROLEUM & CHEM CORP +1
Surface waviness and roughness online measuring instrument
The invention discloses a surface waviness and roughness online measuring instrument, and the measuring instrument comprises a measuring head and a drive device. The measuring head is a confocal displacement meter measuring head, and the drive device is a voice coil motor. A confocal displacement meter is driven by a drive platform of the voice coil motor to operate. The measuring instrument comprises a connection board, and the connection board enables the confocal displacement meter and the voice coil motor to be installed above a detection position of production equipment. According to the invention, the measuring instrument achieves non-contact measurement, does not scrape the surface of a sample, and can measure a flexible or wet sample. The moving speed of the voice coil motor is high, and the measuring instrument just needs one second to measure one waviness value, and can achieve the high-efficiency online detection. The whole measuring instrument is small and exquisite, and can be conveniently installed on each production line. In addition, compared with a conventional lead screw or line guide rail, the voice coil motor is more stable, and can reduce the impact on the measurement data from a scanning device.
Owner:SHANGHAI THIKFOCUS SCI INSTR CO LTD
Sintering air volume control method
ActiveCN108710300AThe control object is directly effectiveReduce redundant air volumeCharge treatment typeResourcesAir volumeLeakage rate
The invention discloses a sintering air volume control method. The method includes the following steps: establishing a sintering air leakage rate index offline model based on frequency characteristics; performing on-line calculation on air leakage rate indexes of a sintering machine based on an offline module; and performing closed-loop control on the sintering air volume based on the air leakagerate. The sintering air volume control method of the invention analyzes and calculates audio signals collected during the production process, obtains an evaluation value of the air leakage amount, anduses the air leakage rate evaluation value and an air volume detection value of the main exhaust fan air outlet as a feedback signal of the control system, and uses the running frequency of a motor of the sintering main exhaust fan as the adjustment amount to realize the online closed-loop control of the sintering air volume.
Owner:HUATIAN ENG & TECH CORP MCC +1
Real-time solution detection equipment and method
PendingCN112630277ARealize intermittent transmissionNo currentMaterial resistanceMaterial electrochemical variablesPeristaltic pumpProcess engineering
The invention provides real-time solution detection equipment and a real-time solution detection method, the real-time solution detection equipment is externally connected with an electromachining system or a waste liquid treatment system, the real-time solution detection equipment comprises an equipment shell, a controller, a solution detection system, a liquid conveying system and a liquid return system, the liquid return system and the liquid conveying system are both provided with distribution filling type peristaltic pumps, and the solution detection system is provided with a heat exchange cooling pipe. The phenomenon that a detection sensor is damaged due to direct measurement in the electromachining solution containing current is avoided, parameters of the electromachining solution can be continuously, accurately and effectively detected on line in real time so that the parameters can be adjusted in time when deviating, it is guaranteed that the production process is stable and controllable, and the precision of the electromachining solution is improved; the equipment and method can be applied to industrial production, improve the production quality, can also be applied to scientific research experiments, and provide an experiment detection platform for research of a processing mechanism; and waste liquid generated after processing can be discharged after treated effluent waste liquid reaches the standard, and environmental pollution caused by poor treatment is avoided.
Owner:GUANGDONG UNIV OF TECH
Sewage quality monitoring method based on COD soft measurement
PendingCN113848237AEfficient online detectionRealize closed-loop controlGeneral water supply conservationMaterial resistanceChemical oxygen demandWater quality
The embodiment of the invention discloses a sewage quality monitoring method based on COD (Chemical Oxygen Demand) soft measurement. The method comprises the following steps: establishing a conductivity early-warning range based on the cumulative probability of conductivity, collecting the conductivity of a sample to be detected, comparing the conductivity with the conductivity early-warning range, determining the early-warning property of the conductivity, introducing the conductivity needing COD accurate measurement into a COD soft measurement model to obtain a COD estimated quantity, comparing the COD estimated quantity with the COD early warning range, and taking corresponding measures according to the comparison result. According to the method, the serious pollution condition is eliminated through the conductivity, then the condition that the conductivity is qualified but the chemical oxygen demand (COD) is abnormal is detected based on the correlation between the conductivity and the chemical oxygen demand (COD), the double-layer monitoring technology greatly reduces the operation data volume of the system, and the method has the advantages of being accurate in detection, easy to operate, convenient to maintain and manage, low in cost and the like, and is especially suitable for large-range and high-density arrangement, and can be applied to large-range monitoring of rural distributed domestic sewage treatment facilities.
Owner:SHANGHAI ELECTRIC DIGITAL ECO-TECH CO LTD
Single Event Toggle Soft Error Detection Method for FPGA Based on Redundant Interconnection Resources
ActiveCN104699571BEfficient online detectionRedundant hardware error correctionResource basedComputer science
The invention discloses a method for detecting soft errors of FPGA single event flipping based on redundant interconnection resources, which comprises the following steps: Step 1, establishing the connection relationship in FPGA internal interconnection resources; Step 2, not using logic units, directly Insert a comparison circuit into the FPGA device; Step 3, find a copy line for the existing interconnection resources; Step 4, combine the copy line with the comparison circuit to complete the double-backup comparison of the FPGA based on redundant interconnection resources, and realize error detection. The invention develops an efficient search algorithm for redundant interconnection resources by making full use of the phenomenon that there are many redundancy in the interconnection resources in the design, and realizes the high-efficiency online detection of single-event flipping soft errors by means of a simple modification of the FPGA structure. detection.
Owner:SHANGHAI JIAO TONG UNIV
On-line monitoring and diagnosis method of coaxial capacitive sensor and engine lubricating oil wear particles
ActiveCN109959587BEfficient online detectionRealize online whole basin monitoringMaterial analysis by electric/magnetic meansParticle size analysisMechanical engineeringCapacitance transducer
Owner:XIAMEN UNIV
Scanning leak detection high-efficiency negative pressure exhaust hood
The invention discloses a scanning leakage detection efficient negative-pressure exhaust hood which comprises a box body. The hollow portion of the box body is internally provided with an efficient filter. The two sides of the efficient filter are fixed through fixing pressing plates. Sealing frames are arranged above the positions where the efficient filter is connected with the fixing pressing plates. A gas collection box and a transmission box are sequentially installed on one sealing frame from the box wall to the interior of the box body. A support is fixedly arranged on the other sealing frame. A linear scanning device and a sampling pipe are installed between the transmission box and the support. One end of the sampling pipe is connected with the linear scanning device, and the other end of the sampling pipe is communicated with the gas collection box. According to the scanning leakage detection efficient negative-pressure exhaust hood, noxious gas can be efficiently filtered out and exhausted inside a working area, noxious substances are prevented from polluting environment and an exhaust pipeline, and safety of environment and safety of an experimenter are protected; the linear scanning leakage detection mode is adopted to conduct in-situ leakage detection on the efficient filter, the mode of synchronous disinfection with a laboratory is adopted to conduct sterilization, and the scanning leakage detection efficient negative-pressure exhaust hood has the advantages of being little in investment, protecting environment, conducting efficient exhaust and the like.
Owner:苏州市金燕净化设备工程有限公司
Online detection equipment for liquid in sewage pool
PendingCN113375764AEasy to detect onlineEfficient online detectionTesting waterLevel indicators by floatsSewageMechanical engineering
The invention discloses online detection equipment for a liquid in a sewage pool, wherein the online detection equipment comprises the sewage pool, and a mounting plate is arranged at the bottom end in the sewage pool. According to the online detection equipment, through cooperative use of a floating plate, a detection rod, a first limiting rod, a second limiting rod, a sliding sleeve, a first transverse plate, a second transverse plate, a third transverse plate, an inductor, a rubber pad and an alarm, online detection of the liquid in the sewage pool is facilitated, and the phenomenon of idle running of a pump body is prevented; when the liquid level in the sewage tank is low, the floating plate can drive the detection rod to move downwards, so that the rubber pad at the bottom end of the third transverse plate on the surface of the detection rod is in contact with the inductor at the top of the first transverse plate, then the inductor transmits a signal to a control panel, the control panel stops working of the pump body, and then an alarm is controlled to sound to play a warning role; and by means of the mode, the liquid level in the sewage pool can be effectively detected on line, and the phenomenon of idle running of the pump body is prevented.
Owner:浙江华晟智能科技有限公司
On-line detection device for flexible package presswork
PendingCN114211875AEfficient online detectionGuaranteed printing qualityPrinting press partsEngineeringMechanical engineering
The invention provides an online detection device for flexible package printed matters, and mainly relates to the technical field of printed matter detection equipment. The online detection device for the flexible package printed matter comprises a front conveying device, a rear conveying device and a detection box body, the front conveying device and the rear conveying device are arranged on the two sides of the detection box body respectively, a through cavity is formed in the detection box body, and the sides, close to the detection box body, of the front conveying device and the rear conveying device extend into the through cavity; the online detection equipment is fixedly mounted at the bottom in the detection box body, the suction seat is movably mounted in the detection box body, the negative pressure fan is mounted at the top of the detection box body, a plurality of flattening rollers are mounted in the suction seat in an embedded manner, position sensors are arranged on the periphery of the bottom of the suction seat, and a plurality of negative pressure suction holes are formed in the bottom of the suction seat. The online detection device has the beneficial effects that online detection can be quickly and efficiently carried out on the flexible package printed matter, so that the printing quality of the flexible package printed matter is ensured, and the production cost investment is reduced.
Owner:山东蓝海印刷科技有限公司
A kind of valve internal leakage detection simulation device and its gas valve internal leakage rate acoustic emission diagnosis method
ActiveCN105953987BEfficient online detectionResolve detectionDetection of fluid at leakage pointBuffer tankAcoustic emission
The invention relates to a valve inner leakage testing simulating device and a gas valve inner leakage rate acoustic emission diagnosis method thereof. The valve inner leakage testing simulating device comprises a buffer tank. One end of the buffer tank is connected with an air compressor, and the other end is connected with a flowmeter. The buffer tank is provided with a pressure gauge. A testing valve is arranged between the buffer tank and the flowmeter. The valve inner leakage testing simulating device and the gas valve inner leakage rate acoustic emission diagnosis method thereof can settle a problem of testing gas valve inner leakage and realize valve inner leakage testing and evaluation in a petrochemical industry; the valve inner leakage testing simulating device is used for performing valve inner leakage acoustic emission tests; acoustic emission parameters are acquired; a valve inner leakage rate evaluation formula model is established by means of a formula; and a database is applied for performing fitting, thereby realizing valve inner leakage rate diagnosis. The valve inner leakage testing simulating device and the gas valve inner leakage rate acoustic emission diagnosis method thereof have advantages of effectively performing online testing on valve inner leakage, preventing economic loss caused by work stoppage, ensuring stable pressure in tests and realizing estimation on the valve inner leakage rate.
Owner:CHINA PETROLEUM & CHEM CORP +1
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