172results about How to "Ingenious method" patented technology

The invention discloses a system for visually detecting workpiece appearance defects based on image processing, comprising an industrial personal computer, a coaxial light source, a CCD (charge coupled device) industrial camera, an image acquisition card and a rejecting mechanism; both the coaxial light source and the rejecting mechanism are connected with the industrial personal computer; the CCD industrial camera is connected with the industrial personal computer through the image acquisition card; wherein the coaxial light source is used for providing a diffuse reflection light source for a workpiece to be detected; the CCD industrial camera is used for taking an image of the workpiece at a detection station; the rejecting mechanism is used for rejecting from a production line, workpieces detected to be defective; the industrial personal computer has a defect detection module based on image processing; the system is high in detection efficiency and easy to implement.

The invention discloses a workpiece apparent defect detection method based on machine vision. Firstly, a visual system is used for guiding a robot, the pose of a target workpiece is precisely positioned according to a template matching algorithm based on a gray value, and then workpiece apparent defect detection is carried out and comprises the steps that firstly, a workpiece image is acquired and pretreated through median filtering; secondly, the target workpiece is divided through a global threshold value, and workpiece pose correction is carried out; thirdly, burr interference of the edge of the workpiece is removed through mathematical morphology open operation; fourthly, notches, material sticking, cracking, indentation, needle eyes, scratches and foaming apparent defects are detected. The method solves the problems that the artificial detection speed is slow, the efficiency is low and precision is poor; the problems that according to current vision detection, defect types are singular, the imaging quality is poor, and the false drop rate is high are solved, and the automation degree of precise workpiece production and product quality are improved.

The present invention relates to an automatic spinning new end forming method and its equipment. The roving machine utilizes the coder positioned at the drafting portion position to detect the full-yarn length when the bobbin can be fulled, and makes the roving machine spin to a certain length in low speed, after the roving is spun to a certain length, makes the roving machine operate in low speed, at the moment makes the spindle rail stop lifting movement and makes the yarn be in said height position, winds 2-3 turns of halching and makes the spindle rail be quickly lowered to form large thread pitch wind so as to make the roving do not take-off in its transportation process; changes the speed ratio of flywer and roller so as to reduce roving twist, and obtain undertwisted roving, and when the ultralowering of spindle rail is made to place, the yarn is stretch-broken to produce fuzzy fibre whose length can be suitable for secondary automatic spinning new end formation.

The invention discloses an article defect detection system and method based on machine vision. The system comprises a feeding device, a conveying device, an image obtaining device and a control and image processing module. The feeding device and an inlet of the conveying device are in butt joint, the feeding device and the conveying device are installed on a rack, the feeding device is used for conveying an article to be detected to the conveying device, and the conveying device is used for conveying the article to be detected to a detection station. The action of the feeding device and the action of the conveying device are controlled by the control and image processing module. The image obtaining device is arranged on the rack and used for obtaining an image of the article to be detected at the detection station and transmitting the image into the control and image processing module for image processing so as to judge whether the corresponding article to be detected has a defect or not. The system is compact in structure, abundant in function, capable of detecting various defects of articles, ingenious in concept and capable of being easily implemented on a high-speed detection line.

The invention provides a traffic monitoring image-based automatic detection system for a safety belt non-fastening behavior of a driver. The system comprises a module for extracting a to-be-detected region of the safety belt and a module for judging whether the driver fastens the safety belt or not; the module for extracting the to-be-detected region of the safety belt comprises a license plate detection sub-module, a driver region extraction sub-module, an image enhancement sub-module, a human face detection sub-module and a safety belt detection region extraction sub-module; the module for judging whether the driver fastens the safety belt or not adopts a straight line detection-based safety belt judgment method; and the straight line detection-based safety belt judgment method is used for detecting an edge straight line section of the safety belt by using a Canny edge detection algorithm and a progressive probabilistic Hough transform straight line detection algorithm. The safety belt non-fastening behavior of the driver can be accurately and quickly detected and recorded, so that the disadvantages of high labor cost of manual identification, easy fatigue, easy negligence and the like are effectively overcome, and the safety belt non-fastening driving behavior of the driver is effectively inhibited.

Provided are a graphene nanosheet dispersion and a preparation method therefor. In the dispersion, the graphene nanosheet has a thickness of 0.35 - 7 nm, and is dispersed in a solvent in the form of a single layer or multiple layers. The preparation method comprises the following steps: (1) mixing graphite with a solid polymer proportionally, and grinding mechanically to obtain a mixed powder of graphene nanosheets/solid polymer; (2) adding the mixed powder of graphene nanosheets/solid polymer into a solvent capable of dissolving the polymer, so as to obtain an intermediate of graphene nanosheet dispersion; and (3) removing the solid polymer dissolved in the solvent from the obtained intermediate of the dispersion, so as to obtain the graphene nanosheet dispersion. The polymer is used as a dispersion phase in the method and promotes the stripping of graphite during grinding so as to effectively inhibit the obtained graphene nanosheets from reaggregation. The method is simple and has a low cost.

The invention discloses a voice activity detection method and equipment based on a time domain and a frequency domain. The method comprises the steps that noise energy of voice signals is estimated; white noise is added into the input voice signals; the voice signals after the white noise is added are processed in a framing mode; a short-time energy value of each frame is determined; a harmonic wave product spectrum value of each frame is determined; for each frame, whether the frame is a voice frame is determined according to the short-time energy value and the harmonic wave product spectrum value of the frame, and voice segments contained in the voice signals are obtained. According to the voice activity detection method and equipment, a time domain analysis method and a frequency domain analysis method are combined, the adaptability is high for the actual condition, performance is good under the circumstances that the background noise is human voice and the signal to noise ratio is low, the method is easy and ingenious to realize, and the equipment can be embedded into various voice systems easily.

The invention belongs to the technical field of lighting lamp control, and relates to an LED dimming driving device and a dimming LED lamp with the same; and the LED dimming driving device and an on-off switch control and regulate the brightness or color changes of the LED lamp. The invention provides the LED dimming driving device which comprises a first power supply circuit, a single-chip microcomputer and a second power supply circuit; the single-chip microcomputer is used for controlling the first power supply circuit to supply power to the LED and supplying power to the single-chip microcomputer; the second power supply circuit is used for supplying power to the single-chip microcomputer after the first power supply circuit stops supplying power; and the single-chip microcomputer is used for acquiring and analyzing the on/off signal of the first power supply circuit, and selecting and outputting an LED control signal which corresponds to the on/off signal.

The invention discloses a method for improving inland saline alkali soil by virtue of interplanting jerusalem artichoke and oat. The method comprises the following steps of: (1) performing land leveling in autumn, applying organic fertilizers, desulfuration gypsum and a chemical modifier and performing winter irrigation; (2) applying chemical fertilizers in spring, and performing rotary tillage and rake leveling; (3) interplanting and seeding at an interval of three rows of jerusalem artichoke and 10 rows of oat, wherein seed tuber seeding is adopted for the jerusalem artichoke; the jerusalem artichoke plant quantity per mu is controlled at 3000 plants, and the oat seeding quantity is 10kg/mu; (4) cultivating and weeding as well as hilling during a period that the main stem of jerusalem artichoke has 7 to 8 leaves, and spraying a herbicide before sealing ridges of the oat so as to control field weeds; and (5) starting harvesting oat seeds at the stage of milky ripeness, and starting harvesting underground stem tuber of the jerusalem artichoke when leaves of the jerusalem artichoke start turning yellow in the middle ten days of October, wherein the straws of oat are utilized as silage, and the straws of jerusalem artichoke are utilized as feedstuff. According to the method, the complementation of advantage effects of the jerusalem artichoke and the oat is utilized, so that mutualism and joint yield increase are realized; the jerusalem artichoke and the oat adsorb saline matters in the soil simultaneously and fertilize the soil, so that the saline-alkali harms are reduced.

The invention discloses a variable-pressure gas release braking method. The variable-pressure gas release braking method includes that a first cavity, a second cavity and a third cavity are sequentially arranged on a brake shell; an electromagnetic valve is fixed into the first cavity, a slider is arranged in the second cavity, the second cavity is sealed by a plug, the plug is connected with the slider by a second spring, and a second steel ball is arranged between the slider and an oil drain passage; a piston is arranged in the third cavity; medium oil and the second spring jointly push the slider when the electromagnetic valve is powered on, the oil drain passage is sealed by the second steel ball, the medium oil pushes the piston to move downwardly, the pressure of the medium oil in a piston cavity rises when an exhaust valve of an engine is stopped from resetting by the bottom of the piston, the medium oil and a first spring jointly act to push a first steel ball to move downwardly, an oil inlet hole of the piston is sealed, the medium oil in the piston cavity is turned into high-pressure oil, and the piston is stopped from moving upwardly, so that the exhaust valve is opened in an ejected manner, and the purpose of braking the engine is achieved. The invention further discloses a variable-pressure gas release brake.

The problems of an existing high-power LED illumination lamp and chip heat radiation are the technical key point, if the heat radiation is poor, the LED service life is directly influenced, the light failure is accelerated, and the LED lamp service life is shortened, so that the upper portion of an LED lamp is provided with a large aluminum alloy die-casting heat radiation sheet. A high-power LED illumination lamp mainly consists of a heat-conducting piece (10) and an LED lamp (11). A conventional heat radiation technology is overturned, and the super-high temperature difference of a tornado in the meteorology is utilized to produce the rotating and rotating-superimposing effects in the tornado by adopting a man-made method, so that the air flowing speed is greatly accelerated only by giving slight initiative convection flows, good heat radiation effect is achieved, the high-power LED illumination lamp is good in quality and competitive in price, a built-in drive enables replacement of indoor and outdoor illumination lamps to be very simple, easy and convenient like common lamp replacement, the built-in drive and the lamp are alternatively combined through intelligent control, energy is saved, the structure and the LED service life are prolonged, and a method is ingenious, simple and scientific.

The invention provides a method and a device for generating RoF (Radio-over-Fiber) system millimeter waves by adopting SOA (semiconductor optical amplifiers), which belongs to the field of millimeter wave generation in ROF communication technology. The method comprises: inputting pump light and signal light into the SOA, adopting the SOA to produce obvious four-wave mixing effect and obtaining optical millimeter waves needed by a RoF system through a filter; utilizing the four-wave mixing effect to fix phase between light waves so as to obviously reduce phase noise of the system and improve the performance of the system; adopting a proper optical fiber combination for transmission in order to effectively reduce dispersion damage, nonlinear damage and attenuation damage during the transmission of system signals; and performing frequency beating on the optical millimeter waves at a photoelectric detection end so as to generate electric millimeter waves. A RoF millimeter wave generation system built by the invention has the advantages of low phase noise, good performance, simple structure, low price and easiness for practical use, thereby providing strong support for the optimization of RoF millimeter wave systems and intensive study in the field.

A water-proof wooden floor is made up through steaming, baking, planing, slotting, painting and installation. It features that its painting step includes scraping the slotted wooden floor block except its surface with polyester putty, transparent putty or paint with sealing effect by one or two passes; after grinding, painting the said wooden floor block except its surface by 2 to 10 passes clearing off the surplus paint on the floor surface, and grinding the floor surface; and coating the floor surface with paint by 2 to 10 passes, and before each paint pass and after the previous paint being fully dried, grinding the floor surface. Its advantages are greatly reduced shrinkage, expansion, cracking and deforming, high water proof effect and long service life.

The invention discloses a micro calcification point automatic detection method based on an ultrasonic breast tumor image, and the method comprises the steps: segmenting an original image of the ultrasonic breast tumor image to obtain a breast tumor interest region; carrying out weak corrosion and strong corrosion distinguishing on the segmented breast tumor interest region; carrying out multi-scale superpixel segmentation on an ultrasonic breast tumor weak-corrosion interest region, and fusing the texture segmentation result of each scale to obtain a first suspected calcification point with a compact edge; performing single-scale superpixel segmentation on the original image of the ultrasonic breast tumor image, combining the original image of the ultrasonic breast tumor image after the single-scale superpixel segmentation with an ultrasonic breast tumor strong-corrosion interest region, and co-screening out a second suspected calcification point closer to the target based on the gray scale comparison characteristic and the gray scale distance characteristic; and obtaining the micro calcification point of the ultrasonic breast tumor with the accurate target and the compact edge. The method ensures that the detected tiny calcification point is accurate and reliable, is ingenious and novel to realize, and has a good application prospect.

The invention relates to a method for utilizing a fingerprint as a traffic ticket. The method comprises the following steps that: a ticket purchaser fills in a ticket purchasing sheet; ticket-selling staff collects a fingerprint of the ticket purchaser, and stores the ticket purchasing sheet and the fingerprint of the ticket purchaser in a ticket database; a ticket processing system compares the stored information with the prior data information and judges whether the ticket purchaser is a repetitive ticket purchaser or a person with low credit standing or not; the ticket is sent to a non-repetitive ticket purchaser with high credit standing; the train number, the seat number, the departure location, the departure time and the arrival location are bond with the fingerprint of the ticket purchaser; when passengers enter a station, the passengers press the fingerprints, and according to the fingerprints, whether the passenger can enter the station or not is checked; when the passengers leave the station, the passengers press the fingerprints, and according to the fingerprints, whether the passenger can leave the station or not is checked; when one passenger traffic work is finished, the ticket processing system automatically carries out the check of passenger departure and arrival; if no passenger departure information is in the ticket database, the passenger is considered as ticket evasion; and corresponding credit standing value of the fingerprint of passenger in the ticket database is reduced.

The invention discloses a seawater pollution area identification method and device based on a high-resolution remote sensing image, and belongs to the field of digital image processing. The method comprises: firstly, performing sea-land automatic classification on remote sensing images through a supervised learning algorithm, a classification result can reach a high precision level through processiterative clustering, and meanwhile, compared with an existing sea-land boundary analysis and classification method, the operand being small; then, using the chlorophyll concentration difference andthe brightness difference of pollutant shadows existing between the marine pollution area and surrounding seawater; combining a normalized vegetation index related to chlorophyll, a normalized water body shadow index related to brightness, a segmentation-based image interpretation thought and a human eye vision-based saliency mechanism in remote sensing interpretation; through threshold segmentation, realizing extraction of a marine pollution area, respectively extracting an area with excellent water quality and a severely polluted area, and further obtaining a pollution transition area. The method provided by the invention provides convenient and accurate reference for marine pollution prevention and treatment.

The invention discloses a water fire extinguishing system for high-voltage direct-hanging battery energy storage and a control method thereof. The water fire extinguishing system comprises a fire control host, an environment temperature detector, a gas detector, a smoke detector, a user switch, an acousto-optic alarm, a high-voltage direct-hanging battery energy storage system emergency stop switch, a fire pump, an A-phase water spraying pipe network unit, a B-phase water spraying pipe network unit and a C-phase water spraying pipe network unit, wherein the environment temperature detector, the gas detector, the smoke detector, the user switch, the acousto-optic alarm, the high-voltage direct-hanging battery energy storage system emergency stop switch and the fire pump are respectively connected with the fire control host; and the A-phase water spraying pipe network unit, the B-phase water spraying pipe network unit and the C-phase water spraying pipe network unit are respectively distributed over an A-phase energy storage battery cluster, a B-phase energy storage battery cluster and a C-phase energy storage battery cluster in a high-voltage direct-hanging battery energy storage system. The system and the method can achieve the functions of rapid positioning of faults, manual and automatic coordinated safety control, rapid partition spraying and the like, the advantages are obvious, and accurate, safe and rapid fire extinguishing is facilitated.

The invention relates to a parallel distorted signal generator as well as predistortion linear compensatory power amplifier, front feed single-ring linear compensatory power amplifier and front feed single ring-predistortion mixed linear compensatory power amplifier, all of them using it. It includes reversed phase distributor, linear branch composed of linear state amplifier A1 and transmission delay line L1, nonlinear branch composed of nonlinear state amplifier A2 and transmission delay line L2 and inphase adder, can generate nonlinear distorted signal to eliminate nonlinear distortion of the power amplifier and then linearizes the power amplifier. It is simple, convenient to debug; and reduces the circuit cost by about 40%, its structure is simple and its method is skillful and novel, its cost is low and its development technique has low risk.

The invention discloses a gold-nanoparticle-modified carbon nanotube and a preparation method and application thereof, wherein carbon nanotubes are used as a carrier, gold nanoparticles are loaded onthe surface of the carrier, and the gold nanoparticles are polyhedral structures. The method is carried out as follows: ontacting a gold compound solution in an atomized state with the heated carbon nanotube carrier for in-situ reduction to obtain the gold-nanoparticle-modified carbon nanotube. The gold-nanoparticle-modified carbon nanotube can be used for a detection substrate for surface enhanced Raman scattering. The gold nanoparticles supported on the gold-nanoparticle-modified carbon nanotube are the polyhedral structures having sharp edges and corners, have strong ''hot spots'', and thecarbon nanotubes are located in a ''hot spot'' region, so that the gold-nanoparticle-modified carbon nanotube has strong Raman enhancement effect. The method is simple, ingenious, and easy to implement, thereby obtaining the gold-nanoparticle-modified carbon nanotube.

The invention relates to dimming driving device and a dimming lamp with the dimming driving device. The dimming driving device comprises a light source drive circuit and is characterized by further comprising a Microprogrammed Control Unit (MCU) and a temporary power supply circuit, wherein the temporary power supply circuit is used for supplying electricity to the MCU after the light source drive circuit stops supplying electricity. The MCU comprises a current detection module, an analysis processing module and a storage module, wherein the current detection module is used for obtaining breakover/cutoff signals of the light source drive circuit and transmitting to the analysis processing module. The storage module is used for storing a curing program for gradual light source brightness and darkness change and status information about light source brightness constancy. The analysis processing module obtains the breakover/cutoff signals of the light source drive circuit, analyzes and processes the curing program for the gradual light source brightness and darkness change or the status information about light source brightness constancy, wherein the curing program for the gradual light source brightness and darkness change or the status information about light source brightness constancy are stored by the storage module, to generate light source brightness regulating signals, and transmits the light source brightness regulating signal to the light source drive circuit. And the light source drive circuit regulates the brightness of the light source according to control signals.

The invention discloses a game theory-based optimization scheduling method of an internet + a smart energy network. An energy supply equipment model of the internet + the smart energy network is established, and constraint conditions thereof are confirmed; according to a structure of the internet + the smart energy network, optimization objectives of internal energy merchants and micro-network users thereof are analyzed; and a parallel game model of the internet + the smart energy network is established to realize optimization scheduling of the internet + the smart energy network. According tothe method, the problem that respective optimization of multiple optimization main-bodies cannot be realized in past optimization scheduling is effectively solved, and the objectives of energy use cost minimization of the micro-business users and energy supply income maximization of the energy merchants are achieved. The method is ingenious, and has a good application prospect.

The invention discloses a construction method of a furrow-shaped slow flow ecological purification system, belonging to the technical field of water pollution control and ecological repairing. The method comprises the following two steps of: determining a constructing region and constructing a furrow; selecting a slow slope range with the terrain slope which is less than or equal to 15% as the constructing region; digging a plurality of parallel interval shallow grooves (1) in a vertical direction of an inclined slope; continuously or discontinuously filling crushed stones (5) in the shallow grooves; planting humidity-proof shrub plants (4) in the shallow groove; stacking soil furrows (2) at one sides of the shallow grooves with the lower terrain; and planting arbor or shrub plants (3) on the soil furrows. The construction method has the advantages of simple construction method, easiness for operation, small engineering amount, little investment and strong operability; the construction method can be used as a process method of newly-established ecological repairing engineering and also can be used as a modified method on the basis of the existing repairing engineering; and the construction method has wide applicability, does not disturb the previous system and has a wide application prospect on the aspect of managing surface source pollution.

The invention relates to a bearing block for a water supply pump station and a repairing technology. The bearing block for the water supply pump station comprises a base, a first bearing hole plate and a second bearing hole plate, wherein the first bearing hole plate and the second bearing hole plate are arranged on the base, and holes are coaxial; the lower surface datum of the base is A; the datum of hole axes of the first bearing hole plate and the second bearing hole plate is D; the datum of the outer side surface of a hole of the first bearing hole plate is B; the datum of the outer side surface of the hole of the second bearing hole plate is C; the datum D is parallel to the datum A; the datum B and the datum C are perpendicular to the datum D. The bearing block for the water supply pump station is reasonable in design, compact in structure, and convenient to use.