1068results about How to "Realize online detection" patented technology

The invention relates to an automatic license plate positioning and recognition method based on a complex background. Images are acquired in a way that traffic polices or management personnel use digital cameras to take automobile pictures at any time and under various operating conditions instead of acquiring at certain fixed positions or intersections, and automatic license plate positioning and recognition are realized aiming at the random conditions. The method includes the steps: acquiring license plate images; converting color images; acquiring marginal information of the license plate images; acquiring alternate license plate zone images; precisely positioning license plate character zones; subjecting characters to single-character segmentation; and finally, using a BP (back propagation) neural network to realize recognition of license plate characters. The automatic license plate positioning and recognition method based on the complex background has the advantages of high accuracy and the like.

The invention discloses a portable partial discharge ultrasonic cloud detection device, which comprises an ultrasonic sensor, a temperature sensor, a humidity sensor, an atmospheric pressure sensor, a signal processing module, a wireless network device, a display and an earphone. The sensor transmits the signal to the signal processing module, and the processed signal is transmitted to the cloud server through the wireless network device, and the signal is subjected to anti-interference processing and characteristic parameters are extracted and stored in the partial discharge signal characteristic database. For analysis, the operator monitors the sound in the earphone and makes a diagnosis based on the results of the cloud server. The diagnosis result is displayed on the monitor, and the device detects and alarms at the same time. The invention uses the data analysis, processing and storage capabilities of the cloud detection principle to detect the partial discharge in the equipment early and prevent the occurrence of major accidents through online monitoring or inspection of the partial discharge of the high-voltage equipment.

The invention relates to an on-line detection grading device for a lithium ion battery pole piece and a method thereof. In the device, image data of the lithium ion battery pole piece are acquired by using an embedded visual recognition device and are analyzed and processed to judge whether the appearance quality of the pole piece meets requirements or not, so that the actions of a turnover part and a grading part are controlled to realize real-time on-line double-side detection and grading of the electrode pole piece. The method has high detection speed; generally, the detection of the frontside and the back side of one electrode pole piece can be finished within 1 second, so that the production efficiency is increased; if the pole piece is manually detected, longer time is required to be taken; the detection accuracy is high; the embedded visual detection technology is adopted, so that the accuracy is high and the stability is also realized, and a detection result has high uniformity; the running time is long, namely a detection system can uninterruptedly run for 24 hours, so that the productivity is improved and the labor cost is saved; and on-line detection can be realized, so that the on-line detection of the electrode pole piece is realized, the interference in a manual operation process is reduced, and the productivity is improved.

The invention discloses a machine vision-based intelligent detection method for the surface defect of a bottle cap. The method comprises the following steps of: (1) acquiring the image information of a qualified bottle cap; (2) performing range positioning and characteristic parameter extraction on the surface image of the bottle cap; (3) respectively storing all the acquired parameters of the surface image of the bottle cap in different arrays; (4) judging whether the acquisition times of the bottle cap reaches the preset acquisition times; (5) counting the average value, the upper limit value and the lower limit value of all the parameters, and taking the difference of the upper limit value and the lower limit value as an error allowance range; (6) acquiring the image information of the bottle cap to be detected and exacting characteristic parameters; and (7) judging whether errors corresponding to the parameters exist in the error allowance range, and eliminating the unqualified bottle cap with the defect through identifying and other steps. In the method, the intelligently-extracted characteristic parameters of the surface image of the bottle cap can serve as a detection standard, the quick image detection is realized and the detection efficiency is high. The characteristic parameters can be attached to the conventional production line of the bottle cap so as to realize the on-line detection of the production and the detection at the same time.

The invention relates to a fast scanning method of pipeline drawbacks and a non-destructive detection device, which is more particularly suitable for fast scanning and non-destructive detection of drawbacks of the pipelines with insulation. The invention is composed of a guided wave sensor, a transmitting module, a receiving module, a signal generating module, a power amplifying module, a signal processing module, an A / D conversion module and an built-in computer system. The invention is suitable for comprehensive detection of drawbacks of pipelines with different diameters, detection of long distance pipelines, and detection of pipelines in inaccessible places. The invention has the advantages of fast and large-scale detection ability without contact, high efficiency; overcoming a plurality of limitations of the conventional non-destructive detection method; overcoming the restriction conditions of oil pollution, fouling, bending or heat insulation protective layer, judging and locating the drawbacks of the pipelines, reducing the maintenance range, avoiding unnecessary disassembly and replacement, reducing the intensity of artificial detection, and saving the human and material resource. In addition, the invention can achieve on-line monitoring, and evaluate the health condition of the element or predicts the service life of the element.

The invention belongs to the field of bio-medical instruments, and in particular relates to a system and a method for quantitative detection of test strips on the basis of continuous fluorescent-substance markers. The system comprises a continuous fluorescent-substance marker test strip, a test strip frame, a lighting system, an imaging system, a fluorescent image receiver, a signal amplifier, an analog / digital converter, a data processing-controlling system, an output display device, a printer, a keyboard and an IC card matched with the test strip. The data processing-controlling system reads parameters of the IC card and then controls the test strip frame to move so as to ensure that the light emitted by the lighting system is reflected via a dichroic mirror and then automatically scans the test strip; acquired characteristic wavelength reflection fluorescence is transmitted to the data processing-controlling system for optical density identification and concentration calculation via the fluorescent image receiver, the signal amplifier and the analog / digital converter; and the output display device displays results. The invention can quickly and accurately realize the quantitative or qualitative detection of single-component and multi-component samples. The system has the characteristics of high detection sensitivity, objective results, flexible use and the like.

The invention relates to a human body gastrointestinal tract bionic system and a simulation experiment method based on the system. The system comprises a system controller, an intestinal flora planting system, a simulation digestion system, a simulation absorption system, a stirring system, a rate control system, a gas path system, a temperature adjusting system, a pH adjusting system, a digestion liquid reagent bottle, an absorbing liquid reagent bottle and a collector. The method comprises the following steps: setting parameters of the control system, preparing planting colloidal particles, planting the intestinal flora, simulating digestion and the like. The system simulates gastrointestinal tract digestion, absorption and intestinal microecology of human bodies under in-vitro conditions, is real in simulation and good in reproducibility, and us applicable to study on the fields of nutriology, toxicology, physiology, microbiology and the like as intelligent control is adopted.

The invention relates to an on-line detection method of small defects on metal plate strip surfaces, which comprises the following steps: separating R, G, B channel images from a color image collected by a camera, wherein the R, G, B channel images respectively correspond to the distribution of reflected light intensities of red, green, and blue light sources, calculating a surface dip angle distribution map of the R channel image and the B channel image according to a designed surface dip angle calculation method, and then detecting small defects on the metal plate strip surface according to the surface dip angle distribution map; the G channel image is a metal plate strip surface image obtained in an illumination mode between bright and dark fields, and routine defects on the metal plate strip surface can be detected through the G channel image by current algorithm. The complete defect information of the metal plate strip surface can be obtained by combining the detection results of small defects and routine defects.

Provided is a method capable of automatically adjusting a rotation radius and measuring an inner diameter and an outer diameter of a pipe end of a steel pipe. The method is a measuring method which aims at a measuring device for the inner diameter and the outer diameter of the pipe end, wherein laser ranging probes rotate around the pipe end. According to the measuring method, by using the mode that the rotation radius is automatically adjusted during the rotation measuring process, the defect that a laser triangulation method ranging probe is limited in the measuring range is compensated, the requirement for the aligning precision between a rotating central axis and a steel pipe central axis of a rotating platform is greatly lowered, a dynamic range capable of measuring changes on a pipe diameter is enlarged, the equipment cost of an auxiliary machine is lowered, and the stability and the practicality of equipment are improved. Meanwhile, during the operation, aiming at steel pipes with different sizes, the positions of probe fixed arms do not need to be adjusted in advance, the operation procedure is reduced, and the maintenance cost is lowered.

A device used for detecting internal and external quality of agricultural products consists hardware unit including material conveying unit, soft x-ray emission and detection unit, color picture collection unit and computer system; software system including device control, device calibration, sample databank, image collection-treatment and mode identification. It is featured as utilizing soft x-ray image technique and color image collection system to separately obtain x-ray image and external character information of agricultural products.

Disclosed is a CMOS image sensor-based on quantum dot marking test strip quantitative detection system, which comprises a quantum dot marking test strip, a test strip frame, a scanning system, a CMOS image sensor, a data-processing device, an output display device, a printer, a keyboard and an IC card matched with the test strip. After reading the IC card parameters, the data-processing device controls the test strip to move, so that the scanning system can automatically scan a detection band and a quality control band of the test strip; the collected signals are transmitted to the data-processing device through the CMOS image sensor, so that the optical density of the detection band and the quality control band can be identified and processed with concentration computing and technical analysis; and the test results are transmitted to the output display device and displayed. The invention can accurately achieve one-component and multi-component quantitative, semi-quantitative or qualitative detection of samples and can dynamically monitor the immunochromatographic reaction process. The system has high sensitivity, objective result and flexible operation.

The invention discloses a method for estimating a state during a running process of an automobile. The method comprises the following steps: analyzing a driving feature of the automobile and establishing a motion model of the automobile; introducing a non-integrity constraint for establishing a velocity error estimating equation; estimating errors along side direction and vertical direction during the running process of the automobile on the basis of a velocity and three attitude angles of the automobile; and establishing a slip angle estimating equation of the automobile. The stability of the automobile during the running process can be judged according to the velocity error estimation and slip angle estimation. According to the method, the on-line detection for a front-wheel steering angle of a four-wheel automobile can be realized by utilizing the motion model of the automobile. By adopting the method for estimating the state during the running process of the automobile, the real-time calculation and monitoring for state parameters of the automobile during the running process can be realized, for supplying data reference to safety running of the automobile.

The invention discloses an integrated micro-fluidic chip system, which comprises a micro-fluidic chip, a light source unit, a sample introduction unit, a detection unit and a communication unit, wherein the micro-fluidic chip is connected with the light source unit through optical fibers and connected with the sample introduction unit through a hose; and the communication unit is electrically connected with the detection unit, the light source unit and the sample introduction unit. When used for detecting biochemical substances having a fluorescence response property in a fluid sample, the system can solve the problems in prior art such as time consumption, large reagent and sample consumption, complex operation and the like, can realize fluorescence detection under various conditions, hasthe advantages of high integration, quick analysis, high flexibility, little sample consumption, simple operation, quantitative analysis, online real-time detection and the like, has a compiling control degree that allows for combined use with a computer, independent operation, and can be used as a sensor unit in a wireless sensor network.

The invention provides a system for the quantitative detection of a quanta dot mark test bar and a detection method thereof. The system comprises a quanta dot mark test bar, a test bar rack, a scanning system, a photovoltaic conversion system, an analog-to-digital converter, a data processing device, an output display device, a printer, a keyboard and an IC card matched with the test bar. The data processing device reads the parameters of the IC card and then controls the test bar rack to move so as to make the scanning system automatically scan a test bar detection band and a quality control band, the acquired signals are transmitted back to the data processing device by the photovoltaic conversion system and the analog-to-digital converter, so that the optical density values of the detection band and the quality control band undergo recognition, concentration counting and technical analysis, and the detection results are finally transmitted to the output display device for display. The system has the advantages of high detection sensitivity, objective results, flexible use, and the like.

The invention relates to a reference detecting device of an automatic drilling and riveting system of airplane components and a detecting method thereof. The detecting method comprises the following steps of: acquiring information of a reference profile by a 2D laser displacement sensor and a distance sensor, establishing a parameter space of a reference hole center coordinate by applying a least square method, then realizing transformation from a reference hole boundary space domain to the reference hole center coordinate by applying generalized Hough transformation, fitting and calculating a reference center position, and realizing detection of an actual position of the reference, thus realizing determination of the actual position for the processing reference of the automatic drilling and riveting system so as to determine the deviation between the theoretical position and the actual position of the reference. The positions of points to be preprocessed on a product are compensated and corrected, so that the manufacture and installation errors are eliminated, and the drilling and riveting accuracy is increased; and the detecting method is simple, the solving speed is high and the online detection of the reference can be realized.

The invention relates to an on-line double-sided automatic thickness measuring device of organic glass, which mainly comprises a control system, a machine frame, a support frame, a detection frame, a cross beam, a cross beam regulator, a feeding distance measuring device and a plurality of thickness measuring devices, wherein the upper end of the machine frame is fixedly connected with the detection frame, the cross beam is connected onto the upper edge frame of the detection frame through the cross beam regulator, the inside of the detection frame is fixedly connected with the support frame, a plurality of support guide shafts are arranged on the support frame, a feeding speed measuring device is arranged at one end of any support guide shaft for measuring the feeding distance of an organic glass plate, the thickness measuring device comprises upper thickness measuring units and lower thickness measuring units, and a plurality of upper thickness measuring units and lower thickness measuring units are respectively and symmetrically arranged on the cross beam and the detection frame for detecting the thickness information of the front side and the back side of multi-point positions of the organic glass plate. Because the control system is used for processing and calculating the position information of entity space three-dimensional lattices of the organic glass in real time for confirming the dimension quality of the plates, the on-line double-sided automatic thickness measuring device has the advantage of simple and compact structure, and can be directly arranged at a production line for real-time measurement.

The invention relates to a transmission and friction experiment table for a multifunctional mechanical part. The transmission and friction experiment table comprises a first guiding rail, a second guiding rail, a first driving motor, a second driving motor, a first supporting plate, a second supporting plate, a first main shaft box, a second main shaft box, a first test-piece, a second test-piece,a first torque sensor, a second torque sensor, a first rigid coupler, a second rigid coupler, a third rigid coupler, a first supporting plate sliding driving motor, an universal coupler, a loading electric cylinder, a bedplate, an acceleration vibration sensor, a temperature sensor, a displacement sensor, a pressure sensor, a lubricating system, a cooling system and a general controlling computer. According to the invention, various low and high friction pairs in a contact zone can be tested online for frictional wear, energy consumption, vibration and material behaviors under the different loads, rotating speeds and lubrication conditions, and transmission parts and systems can be conducted with friction and transmission process experiments; when testing data is gathered, parts and systems to be tested can be analyzed for the following situations such as frictional wear, power consumption, stress and the service behaviors of transmission pairs, so that the behavior features, variation rules and failure mechanisms of research objects in the operating process can be obtained.

The invention relates to an optical dynamic target device with high accuracy, which comprises an adjusting platform, a main revolution shafting, a rotating arm, a multifunctional multiplexing dynamic laser self-collimation meter, an external fixing reference reflector, a computer and the like, wherein the multifunctional multiplexing dynamic laser self-collimation meter simulates a space motion target, is simultaneously used as an active angle measuring unit, is combined with the external fixing reference reflector to convert the shake of an optical dynamic target shafting into the dynamic change of a two-dimensional angle; the online measurement is carried out on the dynamic error quantity which is caused by the shake of the dynamic target shafting; and a computer modifies the static calibration value of an optical dynamic target in real time according to the shake error of the shafting, thereby accurately determining the space angle of the dynamic target at any moment. The device provided by the invention effectively improves the dynamic accuracy of the optical dynamic target and provides the more accurate detection device and detection method for the measuring accuracy of a photoelectric tracking measuring system.

The invention relates to a regulation and control testing device for preparation of bio oil through quick thermal cracking of biomass and belongs to the technical field of biomass recycling and energy equipment. The device comprises a fluidized bed pyrolysis reactor, a fixed bed thermal cracking reactor, two multi-path sampling valves, two gas chromatographs, a three-level condenser, three oil tanks and other parts. The device has the testing functions of quick pyrolysis, catalytic pyrolysis, on-line analysis and regulation and control, grading controlled condensation and the like, has a compact structure, works stably, can perform full component analysis and catalyst evaluation of pyrolysis gas, can reliably perform quantitative analysis and can effectively perform regulation and controltests of the preparation of the bio oil through quick thermal cracking of the biomass.

The invention relates to an on-line quality detection system of motion belt material, comprising a parallel image sensor group constituted by at least two high-resolution linear CCD, a set of image transmission and process systems composed of a push-in local area network constituted by at least two DSP and a lighting system suitable for motion belt material. A high-speed CCD signal digital multiple circuit, an automatic control circuit of CCD sampling frequency based on the motion belt material speed, a data communication interface circuit between the CCD and DSP are built, then the real-time acquisition of the motion belt material image is realized without an image acquisition card and at the same time the strong image processing function of TMS320C6416 is applied on the image processing for the quality detection the motion belt material thus the collected image does not deform. The system is especially suitable for on-line quality detection of the motion belt material such as plastic film, textile fabric, paper or the like.

The invention is a detector of inter-turn short-circuit state of generator rotor windings, comprising: stator, rotor and rotor windings arranged in the rotor, and air gap between stator and rotor, where a sensor is arranged in the air gap between stator and rotor, the signal output end of the sensor is connected with input end of signal preprocessor, the output end of the signal preprocessor is connected with input end of a DSP, the DSP is connected with keyboard and power supply, output end of the DSP is equipped with communication interface and LCD. And it differentiates rotary magnetic field in air gap of operating synchronous generator and analyzes differential waveform of the DSP to be able to determine whether there is inter-turn short-circuit failure of rotor windings and the positions of the rotor windings, thus implementing on-line detection for inter-turn short-circuit state of rotor windings.

The invention discloses a measuring method of biochemical oxygen demand and a BOD sensor and applications. The measuring method comprises the following steps of: constructing a unilocular air cathode no-amboceptor microbial fuel cell, adding a sample into the microbial fuel cell; measuring output voltage generated by the microbial fuel cell and calculating electrical quantity value; and substituting the electrical quantity value into a liner equation and calculating the BOD value and the like. The invention provides the specific BOD sensor and applications thereof for implementing the method; the lowest detection limit of the measuring method is 0.2mg / L, the measuring range of BOD is 5 to 50mg / L, and the relative error with the detection result of a culture method at the temperature of 20 plus or minus 1 DEG C for 5 days is less than 4.0%. The invention has simple and programmable operation process, stable and fast measuring process, can realize online detection, has low cost and is suitable for promotion and application commonly.

The invention discloses a method for obtaining the mechanical property of a metal material based on a load-depth curve and belongs to the technical field of material property test. On the basis of determining to adopt a large pressed depth ratio (the depth h / the radius R of a pressing head), three kinds of engineering materials, namely alloy steel, aluminum alloy and titanium alloy, of which the elasticity modulus has remarkable difference are treated respectively by adopting two depth combinations (h1=0.1R and h2=0.4R) so as to obtain the respective material property coefficients; a ball factor S which reflects a hardening index effect is introduced so as to obtain a relational expression among a dimensionless function, W / (h3sigmarS ) and E* / (sigmarS); and the mechanical property of a tested material can be finally determined through constitutive relations, obtained by simulation by adopting finite element values, between the coefficients and the materials. By the method, the obtained result is more accurate; and the method is easy and quick and applicable to engineering structural materials in accordance with the power law.

The invention relates to a method for detecting guide waves of a steel storage tank bottom plate, comprising the following steps in sequence; (1) selecting the number of ultrasonic probe arrays (5), and symmetrically distributing the ultrasonic probe arrays (5) along the steel storage tank bottom plate (3); (2) arranging two signal processing devices (4) on each ultrasound probe array (5), and arranging the ultrasound probe array (5) on the steel storage tank bottom plate (3) through a wedge block in a coupling way; (3) selecting a ultrasonic wave length which corresponds to the thickness of the steel storage tank bottom plate (3) and selecting a method for exciting Lamb waves; (4) transforming a travel time matrix with Radon algorithmic function to generate Lamb wave travel time projections of different incidence angles, which are used as the projection data for the subsequent tomography reconstruction; (5) reconstructing a tomography in the projection data with the filtered back projection algorithm; (6) analyzing the tomography to find the position of the defect and grade the defect level; and (7) if the defect existing, changing the positions of ultrasonic probes clockwise, repeating the steps (1), (2), (3), (4), (5) and (6), comparing the repeated detection and tomography reconstruction results, and eliminating the effect of noise and other factors if the position of the defect and the morphology existing.

The invention belongs to the technical field of micro analysis, in particular to an electrochemical sensor chip based on the digital microfluidic technology. The sensor chip comprises a digital microfluidic device and a three-electrode electrochemical device, wherein the three-electrode electrochemical device is stacked on the digital microfluidic device; the digital microfluidic device comprises a bottom layer and an upper cover, wherein the bottom layer comprises a first substrate, a first insulating layer, a first electrode layer, a second insulating layer and a first drainage layer in sequence from bottom to top; the upper cover comprises a second drainage layer, a second electrode layer, a third insulating layer and a second substrate in sequence from bottom to top; when the first substrate and the second substrate are made of insulating materials, the first insulating layer and the third insulating layer are dispensed; three electrodes include a counter electrode, a working electrode and a reference electrode; and the three electrodes and the first drainage layer are positioned on the same plane and surrounded but not covered by the first drainage layer. The electrochemical sensor chip can realize the delivery and the online detection of various required liquid samples.

The invention discloses a medium-high voltage single-core crosslinked cable induction voltage and circular-current online detection method and a device. The method comprises the following steps: a load-current sensor is sheathed on a cable body under the charged operation condition so as to couple cable load current; a grounding current sensor is sheathed on a cable metallic protecting layer grounding outgoing line so as to couple grounding current of the metallic protecting layer; and the induction voltage of the cable metallic protecting layer is obtained by an induction voltage pickup probe clamped between a fracture of the cable metallic protecting layer grounding outgoing line and a grounding electrode or between the metallic protecting layer outgoing line of a cable line protection grounding side and the grounding electrode. The induction voltage and circular current values of the medium-high voltage single-core crosslinked cable metallic protecting layer can be obtained by optical fiber, an upper computer and a lower computer under the charged operation condition, thus providing effective reference for diagnosing and evaluating the health condition of the cable metallic protecting layer and an outer protecting layer, and providing a technical basis for adjusting and optimizing the grounding mode of the cable line and selecting the types of protects of protecting layers by a cable operation unit.

The invention relates to a robot workpiece assembly and form and location tolerance detection system and method based on face laser sensor, and the system is characterized in that the system comprises a positioning assembly; the periphery of the positioning assembly is provided with the face laser sensor, robot equipment, and an industrial control computer, wherein the face laser sensor, the robot equipment and the industrial control computer communicate with each other. The system depends on a robot which is provided with the face laser sensor, so as to carry out the detection of wrong and leaked assembly of workpieces and the detection of the form and location tolerance of the workpieces. The face laser sensor can obtain the characteristics of three-dimensional data gray level image data of the surface of a detected part at a time under the condition that the robot is stationary, and enables the system to be higher in precision. Moreover, compared with a conventional binocular vision detection mode, the system does not need the assistance from external equipment, also does not need an additional marking point, is easy to implement, and is low in cost.

The present invention is composed of measuring circuit, configuring circuit, and voltage comparing circuit, and capable of realizing casing leak voltage measurement, switching off, and alarm functions to service equipment. The present invention is Suitable for following respects: 1, detecting electric appliance (electric power) equipment casing leak voltage and designing detection instrument,2, according to electric appliance (electric power) equipment drain voltage variation judging insulating layer bad change and constituting safety precautions, 3, providing new method for developing novel electric shock proof instrument.

The invention belongs to the field of oil and gas safety engineering and particularly relates to a device and a method for detecting the combustible gas leakage. The method belongs to a new method for realizing the fuel gas on-line detection and positioning in China, has the advantage of intermittent controllability and can also be used in process systems for gas taking detection and analysis on other gas. Through the arrangement of a first electromagnetic vacuum valve, a second electromagnetic vacuum valve, an automatic control proportion valve, a combustible gas detector and a gas pressure sensor, the goals of stable pressure in a continuous or intermittent control container and the combustible gas leakage detection are effectively realized. The device and the method have the advantages that the operation is convenient, the structure is simple, and the problems in two aspects including the on-line detection of the combustible gas and the stable pressure in a negative pressure container are mainly solved, and simultaneously, an automation control interface is also reserved for providing the possibility for the system full automation realization.

The invention relates to a multifunctional road detection device and a test method for tires. Two suspension systems and two tire steering mechanisms of the multifunctional road detection device are arranged on a frame and are respectively independently connected with the tested tires on two sides of the multifunctional road detection device, so that the tires can be independently steered and can be adjusted in internally gathered or externally scattered states, and lateral inclination angles of the tires can be adjusted. The multifunctional road detection device and the test method have the advantages that data of rotation angles, lateral force, longitudinal acceleration, lateral acceleration and the like of the tires can be acquired by various relevant sensors during driving, so that mechanical properties of the tires under on-site road conditions can be detected; the problem of difficulty in simulating actual service road surfaces by existing indoor detection devices for tires and problems of unbalanced force under lateral deviation and lateral rolling working conditions and single detection working conditions of existing outdoor detection devices for the tires can be solved; the multifunctional road detection device is simple in structure and easy to control and adjust.