1067results 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 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 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.

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 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 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 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 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 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 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.