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Deep and reinforcement learning-based real-time online path planning method of
ActiveCN106970615AReasonable method designAccurate path planningPosition/course control in two dimensionsPlanning approachStudy methods
The present invention provides a deep and reinforcement learning-based real-time online path planning method. According to the method, the high-level semantic information of an image is obtained through using a deep learning method, the path planning of the end-to-end real-time scenes of an environment can be completed through using a reinforcement learning method. In a training process, image information collected in the environment is brought into a scene analysis network as a current state, so that an analytical result can be obtained; the analytical result is inputted into a designed deep cyclic neural network; and the decision-making action of each step of an intelligent body in a specific scene can be obtained through training, so that an optimal complete path can be obtained. In an actual application process, image information collected by a camera is inputted into a trained deep and reinforcement learning network, so that the direction information of the walking of the intelligent body can be obtained. With the method of the invention, obtained image information can be utilized to the greatest extent under a premise that the robustness of the method is ensured and the method slightly depends on the environment, and real-time scene walking information path planning can be realized.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Wavelet difference algorithm-based cable fault localization method
InactiveCN101907437AReasonable method designEasy to implementUsing electrical meansFault locationTreatment resultsDifferential algorithm
The invention discloses a wavelet difference algorithm-based cable fault localization method. The method comprises the following steps of: 1, detecting a signal in real time and synchronously uploading the signal; 2, performing signal acquisition; 3, performing cable fault localization by steps of performing signal pre-treatment which comprises normalization treatment, de-noising treatment and fault signal modulus transformation, judging a wavelet packet entropy fault region, determining the fault point by selecting a one-dimensional signal, performing wavelet transformation, solving a wavelet coefficient, detecting a modulus maximum point, sorting singular points after the maximum point, performing first-order difference operation and difference comparison, and performing localization operation on the cable fault position by using a single-end fault localization method free from influence of the wave velocity; and 4, synchronously outputting the treatment result. The method has the advantages of reasonable design, simple operation, convenient implementation and high localization precision, and effectively solves the practical problems that the fault region cannot be identified and the localization precision is relatively low and easily influenced by various factors in the conventional cable fault detection method.
Owner:XIAN UNIV OF SCI & TECH
Driving state recognition method based on approximate entropy template matching
ActiveCN106446812AThe method steps are simpleReasonable designCharacter and pattern recognitionTemplate matchingTurn angle
The invention discloses a driving state recognition method based on approximate entropy template matching, and the method comprises the steps: 1, sample library building, wherein samples of one type in the sample library are a plurality of steering wheel turning angle signals in a normal driving state, and samples of the other type in the sample library are a plurality of steering wheel turning angle signals in a dangerous driving state; 2, road information segmentation based on the approximate entropy template matching: carrying out the call of a signal correction module based on the approximate entropy template matching to correct the steering wheel turning angle signals in the library sample, wherein the correction process of any one steering wheel turning angle signal is as follows: carrying out the EMD (Empirical Mode Decomposition), the effectiveness recognition of an intrinsic mode function component, and signal reconstruction; 3, feature extraction; 4, two-class model building and training; 4, driving state information collection and synchronous classification. The method is simple in steps, is reasonable in design, is easy and convenient to implement, is good in use effect, can accurately recognize the driving state of a driver simply and conveniently, and is high in recognition precision.
Owner:陕西智慧路衡电子科技有限公司
Preparation method for porphyra yezoensis sesquiterpene algal activity-inhibiting compounds and application
InactiveCN108409539AReasonable method designStrong maneuverabilityBiocideOrganic compound preparationRed tideThin-layer chromatography
The invention relates to a preparation method for porphyra yezoensis sesquiterpene algal activity-inhibiting compounds. Dry porphyra yezoensis powder is added with absolute methanol and extracted, andafter drying by vacuum evaporation, extract is obtained; the extract is added with methyl alcohol for alcohol precipitation, so that supernate is obtained; the supernate is extracted by ethyl acetate, so that alga-inhibiting components B, C and D are obtained, silica gel column chromatography is adopted to carry out separation, so that alga-inhibiting components B2, B4, C1, C2, D3 and D4 are obtained, silica gel column chromatography is adopted to carry out separation again, so that alga-inhibiting components B21, B23, B41, B42, C11 and C12 are obtained, and except that the component B21 continues to undergo separation by silica gel column chromatography, the rest of the components adopt silica gel thin-layer chromatography to carry out preparation; and by separation, five thin-layer purealga-inhibiting sesquiterpene compounds are obtained. The invention adopts an activity tracking method to purify and prepare the sesquiterpene compounds with red tide microalga-inhibiting activity from porphyra yezoensis by methods such as methyl alcohol extraction, liquid-liquid extraction, silica gel column chromatography and thin-layer chromatography preparation. The design of the method is reasonable, the operability is high, and the microalge-inhibiting activity of the prepared compounds is good.
Owner:JIANGSU MARINE RESOURCES DEV RES INST LIAN YUNGANG +1
Microwave-assisted recycled concrete coarse aggregate picking method
InactiveCN105776930AThe method steps are simpleLow input costSolid waste managementMicrowave emissionMicrowave irradiation
The invention discloses a microwave-assisted recycled concrete coarse aggregate picking method. The method comprises the following steps of: firstly, carrying out microwave irradiation and cooling, namely 101, carrying out microwave irradiation for the first time and cooling, namely 1011 carrying out microwave irradiation on waste concrete blocks and 1012 cooling, wherein the step 1011 comprises the steps of transporting and piling the waste concrete blocks in a microwave irradiation region and then carrying out microwave irradiation on the waste concrete blocks by adopting a microwave transmitting device, and the step 1012 comprises the steps of transporting and soaking the waste concrete blocks subjected to microwave irradiation in a cooling water tank for cooling; 102, carrying out microwave irradiation for the next time and cooling; and 103, repeating the step 102 for once or twice; secondly, breaking; and thirdly, screening. The method disclosed by the invention is simple in steps, reasonable in design, easy to realize and good in use effect, and the problems of an existing recycled concrete aggregate picking method that the picking efficiency is low, mass production of recycled concrete aggregate is not applicable and the quality of the picked recycled concrete aggregate is difficult to guarantee can be effectively solved.
Owner:XIAN UNIV OF SCI & TECH
Method for screening cattle high altitude hypoxia adaptation molecular markers and application thereof
ActiveCN109994153AEfficient and accurate screeningPrecise screeningMicrobiological testing/measurementProteomicsHigh altitude hypoxiaGenome evolution
The invention provides a method for screening cattle high altitude hypoxia adaptation specific molecular marker, and furthermore a cattle kind or individual which is suitable for high altitude hypoxiasurvival is screened through the specific marker. The method aims at a high altitude hypoxia adaptation heredity characteristic of a kettle kind, and selects local cattle kinds which are distributedin high altitude regions at aspects of genome evolution, selecting and adapting. Multiple genome selecting signals, a full-genome association analysis method and a strategy are combined. Key genes andmolecular makers which are suitable for high altitude hypoxia are efficiently and accurately screened. Reasonable method designed is realized. The detecting method according to the key gene and marker designing has advantages of high accuracy, and convenient application operation. According to the method of the invention, through analyzing different altitude cattle kinds, a gene ACSS2 which is related with high altitude hypoxia adaptation and a haplotype thereof are found; and furthermore a specific SNP which bears a strongest selecting signal is positioned; and the method realizes an important meaning and a high practicability value for cattle molecule breeding operation.
Owner:DAIRY CATTLE RES CENT SHANDONG ACADEMY OF AGRI SCI +1
Vector constraint-based random characteristic point selection method for landing position detection
InactiveCN106096621AThe method steps are simpleEasy to implementCharacter and pattern recognitionLocation detectionAngular point
The invention discloses a vector constraint-based random characteristic point selection method for landing position detection. The method comprises the steps of 1, performing acquisition and synchronous uploading of a landing region image; and 2, processing the landing region image: 201, processing the landing region image at an initial sampling moment; 202, processing the landing region image at the next sampling moment by Harris corner extraction, Harris corner matching, SIFT characteristic extraction, SIFT characteristic point matching, characteristic point fusion, characteristic point combination generation and optimal characteristic point combination screening; and 203, returning to the step 202 of processing the landing region image at the next sampling moment. The method is simple in step, reasonable in design, convenient to realize, high in practicality and good in using effect; characteristic points for pose estimation can be simply, conveniently and quickly selected from characteristic points extracted from unknown landing region images; and the pose estimation precision can be effectively improved.
Owner:XIAN UNIV OF SCI & TECH
An Image Feature Extraction Method with Illumination Robustness
InactiveCN102289670AReasonable method designEasy to implementCharacter and pattern recognitionFeature extractionImage resolution
The invention discloses an image characteristic extraction method with illumination robustness. The method comprises the following steps of: 1, collecting and uploading image signals, and adjusting resolution; 2, extracting image characteristics: carrying out two-dimensional wavelet transformation, transforming a low-frequency component after the two-dimensional wavelet transformation in a logarithm space, carrying out convolution calculation by using k Gaussian filter coefficients and low-frequency wavelet coefficients in the logarithm space, carrying out weighted average on a deviation between a convolution result and a low-frequency wavelet coefficient in the logarithm space, carrying out grey value linear stretching on the weighted average result, carrying out the two-dimensional wavelet inverse transformation of three high-frequency coefficients in a wavelet domain and the grey values to be displayed, repeating the steps, collecting and processing L image signals, and extracting the characteristics of the processed image signals; and 3, synchronously outputting processing results. The method disclosed by the invention has the advantages of rational design, convenience for realizing, low investment cost, simpleness and convenience for operation, good image processing effect and strong practicability. The illumination transformation robustness is increased.
Owner:CHANGAN UNIV
Method capable of preventing pre-existing cracks against closure by adoption of high-energy gas fracture
The invention discloses a method capable of preventing pre-existing cracks against closure by adoption of high-energy gas fracture. The method comprises following steps: 1, perforation by a perforating gun: adopting the perforating gun put lower into a well bore of an oil-gas well for perforation and forming multiple perforation tunnels in a target interval; 2, construction of an artificial bottom of the well: constructing the artificial bottom of the well at the bottom of the well bore of the oil-gas well; 3, downward placement of an oil pipe and injection of pressure baffle liquid: downwardly placing the oil pipe to the position where the target interval is located, injecting pressure baffle liquid into wellbores of the oil-gas well by means of the oil pipe till a sleeve pipe and the oil pipe are poured with pressure baffle liquid; 4, injection and displacement of fracturing propping liquid with the process as follows: primary injection of separation liquid, injection of fracturing propping liquid, secondary injection of separation liquid and displacement of fracturing propping liquid till the fracturing propping liquid is displaced to the target interval; 5, tripping of the oil pipe, hoisting and displacement of explosive columns; 6, initiation of explosion. The method capable of preventing pre-existing cracks against closure by adoption of high-energy gas fracture has following beneficial effects: the method has simple steps and a reasonable design and is conveniently realized and has fine usage effect; and a crack closure problem during the process of high-energy gas fracture is effectively solved.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Surrounding rock reinforcement method for junction tunnel section in upper-soft lower-hard stratum constructed adopting shield method and mining method
ActiveCN110878696AThe method steps are simpleReasonable designUnderground chambersTunnel liningStructural engineeringGround settlement
The invention discloses a surrounding rock reinforcement method for a junction tunnel section in an upper-soft lower-hard stratum constructed adopting a shield method and a mining method. The method comprises the steps that 1, tunnel face grouting reinforcement is carried out, specifically, grouting reinforcement is carried out on stratum in front of an excavation face of an upper tunnel body by adopting grouting pipes; 2, junction surface grouting reinforcement is carried out, specifically, grouting reinforcement is carried out on the reinforced stratum by adopting sleeve valve pipes; 3, tunnel arch part advanced support is carried out, specifically, advanced support is carried out on an arch part of the junction tunnel section; 4, grouting pipe removal is carried out; and 5, tunnel faceplugging is carried out, specifically, a tunnel face is plugged through concrete backfilling, and a tunnel face plugging structure is obtained. The method is reasonable in design, simple and convenient to construct and good in use effect, and surrounding rock of the junction tunnel section is effectively reinforced by the method of combining the surface grouting reinforcement with the in-tunnel reinforcement so that the mechanical property of the surrounding rock can be effectively improved; and the tunnel face of the junction tunnel section is reliably plugged before and after reinforcement so that tunnel safety construction can be effectively guaranteed, and ground settlement caused by excavation can be effectively reduced.
Owner:THE FOURTH ENG CO LTD OF CHINA RAILWAYNO 20 BUREAU GRP
Heavy rail scaling apparatus and method
ActiveCN102039537AExtended service lifeAvoid damageMetal working apparatusPositioning apparatusEngineeringTransmission system
The present invention provides a heavy rail scaling apparatus and a method therefor. The apparatus is a single-set or double-set mechanical scaling apparatus comprising a striking head elevating system, a transmission system, a frame and a detection switch. According to the invention, an electrohydraulic push rod is taken as power source to drive a swing rod to swing, a top wheel arranged at the front of the swing rod is employed to control the rise and fall of a lifter plate to allow the striking head arranged at the top end of the lifter plate to be located at either a working position or as top position and cooperate with a scaling saw to realize accurate scaling of the heavy rail. By employing a front detection switch and a damping and thickness-adjusting striking head having a polyurethane bumper pad and an adjusting gasket unit, impact to the striking head can be reduced while the speed of a frequency-changing roller-way is controlled, the service life of the scaling apparatus can be prolonged, the precision of heavy rail scaling can be improved, and the tolerance of the length of the heavy rail is kept between +4mm and -4mm. The apparatus has a simple structure and is easy to operate and convenient to maintain. The method is reasonable, and enables stable system running process, high operation rate, and low accident rate. In addition, the apparatus can increase the yield of heavy rail. The present invention is particularly suitable to be used for the scaling of 95, 96, 99,100 meter heavy rails.
Owner:ANGANG STEEL CO LTD
High-pressure manifold detection method
InactiveCN108870089AReasonable method designEasy to operatePipeline systemsAcoustic emissionEngineering
Provided is a high-pressure manifold detection method. The method firstly draws up a trace number for a high-pressure manifold product, performs macroscopic inspection, functional inspection, wall thickness detection and sealing tests, conducts acoustic emission detection while performing the sealing tests, installs test signs on manifolds which are qualified for the sealing tests and the acousticemission detection, issues a test report, disassembles suspicious parts of the manifolds which leak in the sealing tests or are unqualified for the acoustic emission detection, polishes the inner andouter surfaces, conducts magnetic powder detection, judges the unqualified parts as the unqualified parts, conducts product assembly, the sealing tests and test sign installation on the qualified parts in turn, and finally issues the test report. The detection efficiency of the method is high, and the risk of fracturing operation is greatly reduced.
Owner:荆州市世纪派创石油机械检测有限公司 +2
Hydrophilic flame-resistant polyester fiber material and preparation method thereof
InactiveCN108048946AReasonable method designAccurate control parametersFlame-proof filament manufactureMonocomponent polyesters artificial filamentState of artPentaerythritol
The invention relates to the technical field of polyester fiber, in particular to a hydrophilic flame-resistant polyester fiber material and a preparation method thereof. The preparation method of thepolyester fiber comprises the steps of hydrophilic modification of pentaerythritol, preparation of hydrophilic copolyester slices, crystallization drying, POY spinning, stretching shaping and pore forming agent dissolution. The method is reasonable; the parameter is precisely controlled. Compared with the prior art, the material has the advantages that the hydrophilic performance, the moisture absorption performance and the flame resistance are greatly improved; the excellent limit oxygen index and moisture regain can be realized; the hand feeling is comfortable; the application of the material to the field of textile and garment can be expanded; the defect that the existing polyester fiber is difficult to simultaneously achieve the hydrophilic performance, the moisture absorption performance and the heat resistant and flame-resistant performance is overcome.
Owner:ZHEJIANG HAILI ENVIRONMENTAL TECH CO LTD
Method for processing phosphate rock tailing by adopting single direct flotation process
The invention discloses a method for processing phosphate rock tailing by adopting a single direct flotation process. The processing method comprises the following steps of directly feeding phosphate rock tailing into a roughing flotation machine, roughing by once, and properly adding a pH regulator, an inhibitor and an anionic collector during roughing; classifying a foam product during roughing according to the 325-mesh size fraction; feeding a +325-mesh product in grinding operation and grinding to the grinding fineness demanded by flotation; together combining a ground product and a -325-mesh product and then performing secondary roughing; carefully selecting the foam product during secondary roughing by 3-4 times, and scavenging the product in a slot by 1-2 times to prepare a concentrate product. The phosphate concentrate prepared by the processing method is relatively high in grade and recovery rate, and the processing method is simple in process and easy to realize industrial production. The pollution of phosphate rock tailing to environment can be greatly remitted by the method, and the processing method is very important to realize high-efficiency utilization and cyclic utilization of phosphate rock resources in our country.
Owner:BLUESTAR LEHIGH ENG INST CO LTD
Method for screening bovine plateau hypoxia-adapted gene ALDOC and functional molecular markers and application of bovine plateau hypoxia-adapted genes ALDOC and functional molecular markers
ActiveCN112652362AReduce incubation timeStrong adaptability to plateau hypoxiaMicrobiological testing/measurementBiostatisticsBiotechnologyCandidate Gene Association Study
The invention provides a method for screening a bovine plateau hypoxia-adapted gene ALDOC and a functional molecular marker and application of the bovine plateau hypoxia-adapted gene ALDOC and functional molecular markers, and belongs to the technical field of animal molecular breeding. According to the invention, cattle varieties distributed at high altitude and low altitude are selected from the perspectives of cattle genome selection, genetic adaptation and the like, and genome selection signals between cattle at high altitude and cattle at low altitude and in the cattle varieties are compared by adopting an SNP (Single Nucleotide Polymorphism) chip and integrating three genome selection signal analysis methods of FLK, hapFLK and XPEHH; candidate genes adapting to the plateau hypoxic extreme environment are identified through a combined screening strategy and bioinformatics analysis, potential functional molecular markers are further mined through selection signal verification and re-sequencing data analysis, and a corresponding detection method is established. A scientific basis and a simple and feasible detection technology are provided for molecular breeding such as cultivation of plateau hypoxic characteristic cattle varieties; meanwhile, the method has important significance and value for protection, evaluation and utilization of genetic resources of local cattle varieties.
Owner:DAIRY CATTLE RES CENT SHANDONG ACADEMY OF AGRI SCI +1
Separation and purification method and application of algal inhibition active substances in kelp
ActiveCN108409538AHigh purityReasonable method designBiocideOrganic compound preparationPurification methodsEvaporation
The invention provides a separation and purification method of algal inhibition active substances in kelp. The method comprises the following steps: extracting kelp dry powder with absolute methanol,and then, performing evaporation to dryness under reduced pressure to obtain extract; performing alcohol precipitation on the extract with a methanol aqueous solution; adding ethyl acetate to supernatant liquid for performing extraction, performing evaporation to dryness under reduced pressure, distilling out ethyl acetate at the lower layer, then adding n-butyl alcohol for performing extraction,and performing evaporation to dryness under reduced pressure respectively to obtain a component B and a component C; performing separation by adopting silica gel column chromatography to obtain B1, B2and C2, performing separation by adopting gel column chromatography, and taking methanol as eluent; performing separation to obtain algal inhibition active components B13, B21 and C21, wherein the silica gel thin layer chromatography is adopted for the B13 and the C21; and finally, obtaining algal inhibition active components B21, B131, B132, C211 and C212 of which the purity reaches the thin layer purity. The separation and purification method of the algal inhibition active substances in the kelp is established on the basis of activity tracking, several algal inhibition active substances areseparated from the kelp, and the kelp can be applied to treatment of red tide microalgae. The method is reasonable in design, and the substances obtained by separation have high purity and good algalinhibition activity.
Owner:JIANGSU MARINE RESOURCES DEV RES INST LIAN YUNGANG +1
Safety control method for vertical shaft grab bucket hoisting system and control system of same
InactiveCN103517043AAvoid misjudgmentPut an end to operabilityClosed circuit television systemsVideo monitoringState of art
The invention relates to a safety control method for a vertical shaft grab bucket hoisting system and a control system of the safety control method. The method comprises the following steps: transmitting construction site images of the grab bucket hoisting system through a video monitoring device; in the video monitoring device, recording the construction site images through a video camera which operates together with a crown block by which the grab bucket hoisting system is driven, and transmitting the construction site images recorded by the video camera to a synview and a monitor sequentially through a video cable. Compared with the prior art, the safety control method and the control system thereof effectively solve the problem of safety hazard in the operation of a conventional grab bucket hoisting system, are low in manufacturing cost, are recyclable, are easy to maintain, provide adequate security for safe operation of the grab bucket hoisting system, effectively prevent accident, and guarantee safe and reliable operation of hoisting equipment, thereby being suitable for popularization and application in the fields of crane machinery in urban subway construction and other relative fields.
Owner:ERCHU CO LTD OF CHINA RAILWAY TUNNEL GRP
Method for measuring content of calcium carbonate in gypsum
InactiveCN104198486AReasonable method designReasonable designMaterial analysis by observing effect on chemical indicatorFilter paperGypsum
The invention discloses a method for measuring the content of calcium carbonate in gypsum. The method comprises the following steps: weighing a certain amount of samples into a utensil; adding a sodium chloride solution and heating on an electrical heating plate until the solution is slightly boiled; taking down, filtering, washing with the NaCl solution, and putting filter paper into the utensil; adding a hydrochloric acid solution and heating on the electrical heating plate until the solution is slightly boiled; taking down, filtering, and adjusting the pH value of filter liquor to be more than 7; adding a masking agent, and titrating calcium ions in calcium carbonate by a standard solution to obtain the content of calcium carbonate. The method is reasonable in design, quick, convenient, accurate and stable in result and wide in application range.
Owner:BLUESTAR LEHIGH ENG INST CO LTD
Underground parking lot parking charging processing method
ActiveCN108961834AAccurate Navigation Technology EffectReasonable designTicket-issuing apparatusDetection of traffic movementParking areaManagement unit
The invention discloses an underground parking lot parking charging processing method. A first collection unit, a parking lot entrance management unit, display terminals and a parking lot outlet management unit are comprised, wherein the first collection unit is used for generating an underground parking lot map and displaying corresponding building numbers in the underground parking lot map, theparking lot entrance management unit is used for identifying the identity of a vehicle entering a parking lot and distributing one display terminal to each vehicle, the display terminals are used foracquiring the idle parking stall information of the parking lot in real time, acquiring the underground parking lot map, generating a final selected parking stall and navigating a user to the final selected parking stall based on the position information of the final selected parking stall in the underground parking lot map, and the parking lot outlet management unit is used for identifying the identity of the outgoing vehicle of the parking lot and regaining the display terminal matched with the vehicle. The proper parking stall can be intelligently selected for the user according to the destination in the underground parking lot, and the accurate navigation technical effect is achieved.
Owner:湖北亘华工科有限公司
Heavy metal contaminated soil remediation method
InactiveCN108856281AReasonable method designAccurate and Efficient RepairContaminated soil reclamationMetal pollutionContaminated soils
The invention discloses a heavy metal contaminated soil remediation method. The method comprises the steps that 1, a plurality of detection points are set on heavy metal contaminated soil randomly, wherein the positions and the depth of the detection points are all different; 2, based on the detection points, heavy metal contamination detection is conducted on the soil, and the heavy metal contamination types and degrees are generated; 3, based on the heavy metal contamination type and degree of each detection point, a heavy metal contamination map of the heavy metal contaminated soil is drawn, and in the heavy metal contamination map, the heavy metal contamination type and degree of each coordinate point in the map are shown; 4, based on the heavy metal contamination map, a heavy metal contamination remediation map is generated correspondingly, and based on the heavy metal contamination remediation map, a heavy metal contamination remediation scheme is generated. The technical effectsthat the method is reasonable in design, soil remediation is conducted accurately and efficiently, and the remediation effect is good are achieved.
Owner:四川鼎立沃尔夫科技有限公司
Water meter reading video identification technology
PendingCN114202658AAvoid demandingReasonable method designCharacter and pattern recognitionEngineeringEnvironmental geology
The invention relates to a water meter reading video recognition method which comprises a water meter and a camera, the diameter of the outer frame circle of a water meter head is preset according to the model of a recognized water meter, the camera is fixed above the water meter, and a water meter reading video is shot in real time. Firstly, the position and the center of a water meter outer frame circle are searched through a Hough circle detection method according to the known outer frame circle diameter; secondly, finding out the positions of all reading circles and the position of the center of a circle in the outer frame circle through a Hough circle detection method, and then determining the to-be-read circle according to the known position of the to-be-read circle; then identifying the circle center of the circle to be read and the position of the fingertip of the pointer in the circle to be read through an angular point detection method, and determining the actual count of the circle to be read according to the rotating angle of a vector formed by the circle center and the fingertip of the pointer; and finally obtaining the running number of the water meter through the actual count conversion of the read circle.
Owner:杭州铭翰科技有限公司
Wavelet difference algorithm-based cable fault localization method
InactiveCN101907437BReasonable method designEasy to implementUsing electrical meansFault locationTreatment resultsDifferential algorithm
Owner:XIAN UNIV OF SCI & TECH
A method for treating phosphate rock tailings using a single positive flotation process
Owner:BLUESTAR LEHIGH ENG INST CO LTD
Single-target tracking method and system based on vehicle-mounted millimeter-wave radar
ActiveCN112346046AStable outputImprove effectivenessRadio wave reradiation/reflectionIn vehicleEngineering
The invention discloses a single-target tracking method based on a vehicle-mounted millimeter-wave radar. The method comprises steps of obtaining all target point data detected by the vehicle-mountedmillimeter-wave radar, and storing the target point data after analysis; preliminarily screening the stored target point information, and storing the target point data meeting the condition; screeningthe obtained target point data, comparing the screened target point data with an output previous frame of target point or a last frame of non-zero target point, and deleting a point which is greatlydifferent from a target point to be tracked; selecting the target point data with the minimum longitudinal distance of the front measurement object relative to the radar from the obtained target pointdata; and screening the obtained target point data, comparing the screened target point data with the target point data output by the previous frame, judging whether the difference value of the target point data and the target point data meets a preset threshold value or not, if not, ensuring stable output through frame supplementation, and if yes, taking the temporary data as final tracking target point data. According to the method, the data of the unique target point can be stably outputted, and information accuracy is improved.
Owner:合肥中科智驰科技有限公司
Blockchain-based data comparison and consensus method
ActiveCN109063097BSolve efficiency problemsResolve accuracyDatabase queryingConsensusDegree of similarity
The invention discloses a data comparison and consensus method based on a block chain, which comprises the following steps: analyzing the data to be stored in a server to obtain a storage number corresponding to the data; obtaining a first consensus number corresponding to the first data when data consensus is carried out in the block chain, obtaining a first storage number corresponding to the first consensus number in the block chain database based on the first consensus number, and obtaining consensus data corresponding to the first data based on the first storage number; when comparing data in a block chain, analyzing the second data and the third data to be compared in the server, obtaining a first comparison number corresponding to the second data, obtaining a second comparison number corresponding to the third data, comparing the first comparison number with the second comparison number, obtaining similarity information of the two numbers, and obtaining a comparison result of the second data and the third data based on the similarity information of the two numbers, thereby achieving a technical effect of high data comparison and consensus efficiency and accuracy.
Owner:GUANGZHOU TIANGAO SOFTWARE TECH CO LTD
Deep stirring injection remediation method based on in-situ oxidation remediation of soil
ActiveCN114309030AReasonable method designExtended contact radiusContaminated soil reclamationEdaphicPollutant
The invention relates to the technical field of soil remediation, in particular to a deep stirring injection remediation method based on in-situ oxidation remediation soil, which specifically comprises the following steps: early-stage soil blending: sampling and analyzing on-site deep soil, and then blending an oxidation agent; segmenting the to-be-remediated soil according to an analysis result; field leveling is conducted on the to-be-remediated area, surface obstacles are removed, then surface water and shallow soil are sampled, the pollution concentration is detected, and remediation treatment is conducted; carrying out remediation treatment on the deep soil by adopting an in-situ injection deepening layer stirring mode; the method is reasonable in design, the deep soil is violently disturbed on the basis of in-situ injection, the contact radius of the oxidizing agent and the soil can be enlarged, the problem that the chemical oxidizing agent makes full contact with pollutants in the soil is effectively solved, and the chemical oxidizing agent is rapidly and effectively migrated into the polluted soil.
Owner:NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
A microwave-assisted method for sorting recycled concrete coarse aggregate
InactiveCN105776930BThe method steps are simpleLow input costSolid waste managementTickMicrowave emission
Owner:XIAN UNIV OF SCI & TECH
Double-threshold return difference control method for refrigeration electromagnetic valve
InactiveCN113108510APrevent back and forth fluctuationsReasonable method designRefrigeration safety arrangementLoop controlEngineering
The invention relates to a dual-threshold return difference control method for a refrigeration electromagnetic valve. The dual-threshold return difference control method for the refrigeration electromagnetic valve comprises the following steps: 1) setting a temperature value SP needing to be kept; 2) setting two temperature thresholds of the electromagnetic valve as T0 and T1; 3) respectively setting the control return differences of T0 and T1: (1) setting the control return difference of T0 as (T0-Xd0, T0 + XU0), wherein XU0 is greater than 0 and Xd0 is greater than 0 and is a variable, and (2) setting the control return difference of T1 as (T1-Xd1, T1 + XU1), wherein XU1 is greater than 0, Xd1 is greater than 0 and is a variable, and T1-Xd1 is greater than T0 + XU0; and 4) when SP is closer to T0 than T1, using the control return difference of T1, and otherwise, using the control return difference of T0. The dual-threshold return difference control method for the refrigeration electromagnetic valve has the advantages that the corresponding control return difference is selected to control the refrigeration electromagnetic valve by comparing the closeness degree of the temperature value needing to be kept and the two threshold values, frequent action of the electromagnetic valve can be avoided, working condition changes of the compressor are prevented, and disturbance quantity in a closed-loop control system is avoided.
Owner:WUXI GUANYA REFRIGERATION TECH
Random Feature Point Selection Method for Landing Position Detection Based on Vector Constraint
InactiveCN106096621BThe method steps are simpleEasy to implementCharacter and pattern recognitionImage extractionLocation detection
Owner:XIAN UNIV OF SCI & TECH
Image characteristic extraction method with illumination robustness
InactiveCN102289670BReasonable method designEasy to implementCharacter and pattern recognitionLogarithmic spaceGaussian filter
Owner:CHANGAN UNIV
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