Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
195 results about "Plant canopy" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Canopy (biology) In biology, the canopy is the aboveground portion of a plant community or crop, formed by the collection of individual plant crowns. In forest ecology, canopy also refers to the upper layer or habitat zone, formed by mature tree crowns and including other biological organisms (epiphytes, lianas, arboreal animals, etc.).
Methods for classifying plants for evaluation and breeding programs by use of remote sensing and image analysis technology
InactiveUS6212824B1Improve performanceLow costSeed and root treatmentPhotogrammetry/videogrammetryImaging analysisBreeding program
Methods for classifying plants by remote sensing and image analysis technology are presented. These methods are useful for evaluating plants and for selecting plants for a plant breeding program which has as its goal to selectively alter phenotype. The methods combine the newer techniques of remote sensing technology to obtain indirect correlates of the traits of interest, with classical pedigree breeding strategies. Thermal and infrared reflectance measures of plant canopies are examples of energy values measured by remote sensing, used to indirectly predict the selected traits.
Owner:MONSANTO TECH LLC
Active Light Sensor
InactiveUS20080291455A1Improve performanceGuaranteed lighting lifeInvestigation of vegetal materialSpectrum investigationOpto electronicInstrumentation
An apparatus is described for assessing plant status remotely sensed by the invention thereby allowing selective monitoring or treatment of individual plants. Additionally, the apparatus may be utilized for measuring the reflectance characteristics of soil or of objects in general. The apparatus utilizes a solid state light source to illuminate a plant canopy or object under investigation. An array of spectrally sensitive photosensors are incorporated into the apparatus to detect light reflected from a plant or object resulting from the integral light source. The instrument may be mounted to a vehicle, mounted to a tripod or held in the hand of an operator for use. A controller can be used in conjunction with the invention to analyze measured reflectance signals and can respond by activating a device to take some action with respect to the plant and / or object or store the analyzed signals with corresponding DGPS position in the controller's memory for later analysis.
Owner:KYLE H HOLLAND TRUSTEE OF THE MARANATHA TRUST DATED JULY 30 2013
Nondestructive testing method and device for nitrogen and water of crops
ActiveCN101936882AImprove acquisitionSuitable for detectionRadiation pyrometryColor/spectral properties measurementsView cameraData acquisition
The invention discloses a nondestructive testing method and a nondestructive testing device for nitrogen and water of crops, and relates to the technical field of crop nutrient diagnosis. The device is characterized by comprising a multisensor information acquisition device, a portable computer, a sensor detecting frame and an instrument container, wherein an infrared temperature measuring sensor, an irradiance sensor and a temperature and humidity sensor are connected with a data acquisition card through a signal cable; the data acquisition card, two digital industrial view cameras and an input end of a power supply module are connected with the portable computer through a USB bus; the power supply module boosts the voltage of a USB to DC24V for supplying power to the sensors; the sensordetecting frame can adjust the height according to the crops; multisensor information is uploaded to the portable computer; and the visible light and the near infrared image features of a plant canopy are extracted, canopy temperature and illumination information are merged, an environment error is eliminated, and the nitrogen and the water of the field crops can be rapidly and nondestructively detected on line.
Owner:JIANGSU UNIV
Self-adaptive light supplementing system and method for plant factory
ActiveCN103563685AReduce labor intensityLow pollution rateGreenhouse cultivationPlant factoryEngineering
The invention discloses a self-adaptive light supplementing system and method for a plant factory. The distance between a light supplementing lamp 1 and plants 12 planted on a culture bed 10 is measured through distance measuring sensors 11, and a stepping motor 4 is driven to operate so as to drive a winding shaft 3 to rotate, so that the light supplementing lamp 1 is driven by steel wires 6 winding round winders 2 to rise or fall; and meanwhile, the light supplementing system can measure and calculate the illumination intensity of a plant canopy through an illumination intensity sensor 13, and then the illumination intensity of the light supplementing lamp 1 is adjusted to be adapted to light intensity requirements of different crops. The method is simple and practical, and the illumination intensity of the light supplementing lamp 1 and the distance between the light supplementing lamp 1 and the plants 12 can be adjusted, so that only set values of system software are required to be changed, and then culture requirements of the different plants for the space and the illumination intensity can be met. The system and the method are applicable to light supplementing for culture of the various plants in the plant factory.
Owner:JIANGSU UNIV
Method for controlling fan system for preventing frost damage of plant and apparatus
InactiveCN101322466AIncrease temperatureIncrease productionPlant protectionFrostMonitoring and control
The invention relates to a fan system control method for preventing plant frost damages and a device thereof, belonging to the monitoring and control fields of agricultural meteorologic disasters. The existing plant anti-frost fan system just depends on one critical low-temperature as the condition of starting up the system; when no thermal inversion occurs, the plant frost damages can be more serious; when the thermal inversion strength is weak, the effect is not obvious. The invention is characterized in that the fan system is automatically started up when the plant canopy temperature is below the critical temperature causing frost damages and the thermal inversion difference above the low earth atmosphere thermal inversion layer is greater than a given threshold value, or the fan system is automatically shutdown. The control device mainly comprises a sensor 5 installed above the low earth thermal inversion layer, a sensor 7 and a controller 4 below the thermal inversion layer. The invention guarantees the running reasonableness and efficiency of the anti-frost fan system, thereby avoiding frost damage aggravation or energy waste due to error operation and null operation.
Owner:JIANGSU UNIV +1
Multi-band photodiode sensor
ActiveUS9451745B1Increased efficiency and cost efficacyReduce irrigationRadiation pyrometryWatering devicesMulti bandEngineering
Plant canopy temperature and multi-spectral reflectance are measured with a wireless multi-band sensor, and the temperature data are qualified and the spectral reflectance measurements are classified. The multi-band sensor includes sensors for measuring plant canopy temperature radiation and spectral reflectance over five bands, a microprocessor to receive and store measured data, and a wireless transmitter for transmitting data from the microprocessor to a remote receiver, all enclosed within a single housing. The data are used to detect variations in spectral signature due to plant stress (e.g., disease, water stress) and due to soil background and to qualify temperature data accordingly. The data provide information for decision support algorithms related to the initiation of automatic irrigation scheduling as a function of crop canopy cover, qualification of temperature data used in automatic irrigation scheduling algorithms, and detection of diseased crops for the purpose of withholding irrigations when yield potential is compromised.
Owner:SOUTHERN ILLINOIS UNIVERSITY +1
Grow light assembly with secondary light modules angularly movable relative to primary light modules
ActiveUS10842082B1Promote plant growthPlanar light sourcesLighting support devicesGrowth plantEngineering
A grow light for stimulating plant growth is presented herein. The grow light includes a plurality of primary light modules with LEDs fixedly mounted to a support assembly and spaced a distance away from a plant canopy, and one or more secondary light modules movably or pivotally mounted to an end of one or more of the primary light modules. A positioning assembly is disposed interconnected light modules for manually or automatically movably disposing the secondary light modules into different angular positions relative to the plant. A height adjustment assembly is also include to movably position the light assembly, such as the plurality of primary light modules or the secondary light modules in a vertical direction. Additional features can be included, such as positioning sensors, environmental sensors, CO2 delivery systems, water cooling systems, ground wire interconnections, and light frequency control.
Owner:GROWGENICS LLC
Method and device for measuring photosynthesis, breath and transpiration of plant canopy or/and breath and evaporation of soil
InactiveCN101907566AAchieve scientific splitRealize continuous observationColor/spectral properties measurementsEvaporationAir pump
The invention provides a method and a device for measuring photosynthesis, breath and transpiration of a plant canopy or / and breath and evaporation of soil. The device is formed by assembling a box base, three boxes (a light box, a dark box and a bare box), a multichannel magnetic valve, an infrared gas analyzer, a data collector, a temperature sensor, a baroceptor and an air pump. The invention can be used for measuring population photosynthesis-breath-evaporation and breath-evaporation of various plants, such as farmland, lawns, bushes, and the like and observing photosynthesis, breath and transpiration of plants and breath and transpiration of soil at the same place and the same time, and can realize the continuous observation and scientific split of various components.
Owner:QINGDAO AGRI UNIV
Leaf area index inversion method and system of merged phenological data and remote sensing data
ActiveCN105303063AMeet the needs of dynamic monitoringResolve inaccessibilitySpecial data processing applicationsRelational modelDynamic monitoring
The invention provides a leaf area index inversion method and system of merged phenological data and remote sensing data. The method comprises the steps of setting multiple sampling points used for observation in a target area, using a plant canopy analyzer for measuring leaf area indexes of plants in all the sampling points in the target area under the scattered light meteorological condition, and recording the vegetation phenological phase of the target area in the measurement process; averaging each sampling point, and obtaining the true leaf area index of the corresponding sampling point; obtaining multispectral remote sensing images observed during the same time period in the same target area, conducting pre-processing, obtaining true reflectivity images, and calculating the vegetation index of each sampling point; utilizing the vegetation indexes and the true leaf area indexes for conducting relevant analysis, and obtaining a quantitative relation model corresponding to the vegetation phenological phase of the target area in the measurement process; according to the model, conducting inversion analysis on the plant growth state of the target area during the corresponding vegetation phenological phase. By means of the leaf area index inversion method and system of the merged phenological data and the remote sensing data, dynamic monitoring of the large-area long-period vegetation leaf area indexes can be satisfied, the problem of field measurement is solved, and agricultural and forestry application requirements are met.
Owner:WUHAN UNIV
Method for calculating extinction coefficients of three-dimensional forest canopy by using laser-point cloud
InactiveCN102914501AImprove estimation accuracyImprove estimation efficiencyMaterial analysis by optical meansVoxelExtinction
The invention provides a method for calculating the extinction coefficients of a three-dimensional forest canopy under any given incident ray by using a geometric algorithm, belonging to the research field of a method of acquiring the structural parameters of the forest canopy. The method for calculating the extinction coefficients of the three-dimensional forest canopy by using the geometric algorithm comprises the following steps: acquiring and preprocessing the three-dimensional laser-point cloud data of a plant canopy; carrying out three-dimensional gridding on the point cloud data; carrying out point cloud slice arithmetic based on a voxel data structure; carrying out linear sampling analysis on the point cloud slices; calculating an average projection coefficient of a kth layer of slices; and calculating the extinction coefficient of any given incident ray in each layer of slices and the extinction coefficient of whole canopy. Compared with the traditional observing way, the invention has the characteristics of being small in working amount, and free from the contact observation and the damage of the canopy structure and radiation, and has objectiveness, high efficiency and precision; a method of extracting the three-dimensional structures and biological and physical diversity information from the laser radar data is developed to characterize the horizontal and vertical distribution change rules of the leaves.
Owner:NANJING UNIV
Intelligent precision lighting energy saving method during plant cultivation by using artificial light and device thereof
ActiveCN104359049AAccurate Light RangeReduce wastePoint-like light sourceLighting support devicesGrowth plantLight energy
Owner:INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
Construction method for summer corn nitrogen content monitoring model based on canopy spectrum information
ActiveCN109187441AReduce distractionsReliable access to dataScattering properties measurementsColor/spectral properties measurementsNon destructiveSoil science
The invention discloses a construction method for summer corn nitrogen content monitoring model based on canopy spectrum information. According to the method, four kinds of summer corn nitrogen content monitoring models are constructed by taking original spectral reflectivity and first derivative spectrum most sensitive band, an optimal band combination and optimal spectrum index as basis by performing test analysis on the change characteristics of summer corn plant canopy spectral reflectivity in different fertilizing levels by a mini lysimeter, researching the response relation between the summer corn plant canopy spectral reflectivity and a first derivative and nitrogen content thereof, screening a sensitive band for corn canopy nitrogen content monitoring, and determining an optimal band combination is determined, and meanwhile, screening optimal spectral index; the four kinds of summer corn nitrogen content monitoring models are calibrated by model evaluation index, and verification is performed by using field plot test data, so as to confirm an optimal monitoring model. The monitoring model can be used for monitoring the nitrogen content of summer corn in the whole growth period, and has important theoretical and practical meaning for realizing large-scale crop nitrogen content non-destructive monitoring and precise water and fertilizer management.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES
Regulation and control method for rice nitrogen topdressing based on nitrogen spectral index method
ActiveCN102318466AImprove precisionImprove the level of digital managementFertilising methodsColor/spectral properties measurementsTime informationSoil type
The invention belongs to the technical field of crop growing management and discloses a regulation and control method for rice nitrogen topdressing based on a nitrogen spectral index method. According to the invention, the nitrogen spectral index method is constructed according to nitrogen amount required by target rice yield, apparent utilization rate of spike fertilizer, plant real-time nitrogen accumulation amount estimated based on reflectance spectrum and soil nitrogen supplying amount while nitrogen fertilization based on a nutrient balancing principle. According to the invention, in the aspect of real-time information acquisition, plant canopy group information is utilized, thus the regulation and control method disclosed by the invention has the quicker and lossless characteristics and the like, thereby avoiding the phenomenon of point replacing surface; in the aspect of a nitrogen topdressing regulating and controlling model, the soil nitrogen supplying amount and nitrogen fertilizer utilization rate during the middle-late period are quantified, thereby enhancing the mechanism characteristic and accuracy of nitrogen topdressing amount estimation and improving the quantification level.
Owner:神农智慧农业研究院南京有限公司
Self-adaptive gridding method and self-adaptive gridding system of geometric curved surfaces of three-dimensional plant organs
ActiveCN101650836AReduce the number of binsFlexible application requirements3D-image rendering3D modellingGrowth plantImage resolution
Owner:BEIJING RES CENT FOR INFORMATION TECH & AGRI
Canopy leaf chamber for determining plant canopy population photosynthesis
Present invention relates to a canopy leaf chamber for determining plant canopy colony photosynthetic activity. It contains quadratic photosynthetic chamber and columned soil fixing body, wherein soil fixing body of canopy leaf chamber bottom set with knob basal portion being corrugation notch, capable of easy inserting amboceptor in soil to form inclosed canopy leaf chamber, amboceptor upper port inosculation with photosynthetic chamber lower wall round opening to make canopy leaf chamber intracavity forming one integral, photosynthetic chamber upper wall sealed by two side glue and photosynthetic film to ensure photosynthetic chamber steady light permeability, photosynthetic chamber sidewall installed one small size fan controlled by external battery and switch, fan capable of rapid making canopy leaf chamber gaseous reaching equalization. Plastic hose respectively is installed on two opposite sidewall centre of Photosynthetic chamber connected with photosynthetic activity calcimetre sample room gas path. Said invention can combine with photosynthetic activity calcimetre for determining different kinds of plantal colony, breath and transpiration.
Owner:SHANGHAI JIAO TONG UNIV
Land surface plant canopies ecological water content remote sensing retrieval method based on spectral analysis
InactiveCN110118742AAccurate portrayalMake up for the lack of accuracyMaterial analysis by optical meansDry weightFeature extraction
The invention discloses a land surface plant canopies ecological water content remote sensing retrieval method based on spectral analysis. The method comprises the following steps: (1) actually measuring plant canopies spectrum data and biochemical data, wherein the biochemical data comprises fresh weight, dry weight and leaf area; (2) preprocessing the actually measured spectrum data and performing spectrum feature extraction; performing moisture noise removing, spectrum differential computation and envelope line removing; (3) computing and extracting the required plant index according to theactually measured reflecting spectrum feature; (4) preforming correlation analysis on the plant field actually measured spectrum data and the biochemical data, and establishing the model of the computed plant index and the plant water content; and (5) analyzing the remote-sensing image spectrum feature, and realizing the plant canopies ecological water remote-sensing quantitative retrieval by combining the plant water content model established through the actually measured data. By utilizing the method disclosed by the invention, the dynamic monitoring on the plant canopies ecological water content can be realized, and the monitoring accuracy is high.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY
Biological pesticide dust agent
InactiveCN103918647ASolve food safety hazardsOvercome resistanceBiocideFungicidesInsect pestBiopesticide
The invention discloses a dust agent with biological pesticides as effective components and a using method thereof. The biological pesticide dust agent adopts raw drugs, mother powders, powder agents, wettable powders, fine granules and other powder preparations of one or more biological pesticides as the effective components, a certain amount of a carrier and auxiliary agents are added, and the biological pesticide dust agent is prepared through air flow pulverizing; the fineness of the biological pesticide dust agent comprises that D90 is less than 53 [mu]m, D50 is less than 37 [mu]m, and D10 is more than 2 [mu]m. The dust agent is applied by a powder spraying method, and can be used for prevention and treatment of diseases and insect pests in facilities or outdoor horticultural plants. After application, the dust agent can perform all-dimensional motion in air and can be lastingly suspended in the air, so that the dust agent can be well diffused, penetrated and go deep to a relatively hidden part in a plant canopy, has high attachment uniformity, and is in favor of playing a better drug effect. In the production application, the using method has the characteristics of water saving, labor saving, effort saving and drug saving, is not affected by climate conditions, and overcomes the disadvantages that a conventional atomizing method adopts much water for drug application and easily induces high wet disease.
Owner:INST OF VEGETABLE & FLOWERS CHINESE ACAD OF AGRI SCI
Image-fusion-based early diagnosis method and apparatus for kiwifruit canker
ActiveCN105678793AEnables early non-destructive testingOvercome deficienciesImage enhancementImage analysisNon destructiveDiagnosis methods
Disclosed in the invention is an image-fusion-based early diagnosis method and apparatus for a kiwifruit canker. The method comprises: correction and pretreatment are carried out an infrared thermal image to obtain an image I0; correction and pretreatment are carried out an RGB image to obtain an image V0; image matching and image fusion are carried out on the image I0 and the image V0 to obtain an image F; the image F is segmented by using an algorithm to obtain a fused image F1 of a plant canopy area; a plurality of groups of kiwifruit samples that include kiwifruit with cankers and healthy kiwifruit and are provided with known diagnosis results are selected, images F1 of the kiwifruit samples are collected and a canker determination model is established by using geometric parameters of the images F1 as variables; and then geometric parameters of to-be-tested kiwifruit are introduced into the determination model to carry out early diagnoses. In addition, the invention also discloses an image-fusion-based early diagnosis apparatus for kiwifruit canker. With the method, non-destructive detection can be carried out before development of leaf symptoms of the kiwifruit canker and the operation becomes convenient and rapid.
Owner:ZHEJIANG UNIV
Advanced plant biochemical parameter non-contact monitoring device
InactiveCN101625314AAchieve fine controlGrowth scienceColor/spectral properties measurementsProgramme control in sequence/logic controllersFiberEngineering
The invention discloses an advanced plant biochemical parameter non-contact monitoring device which is used for carrying out non-destructive automatic real-time detection on biochemical parameters of chlorophyll, water, nitrogen, and the like in plant canopy level in an unattended environment. A plant is detected by a visible / near-infrared spectral analysis technology, and the fine control can be realized; the unattended non-contact sampling is realized and the power consumption of the device is reduced by the integral design of a special light source and a sampling probe; a sampling device is separated from a host machine and the remote measurement is realized by an optic fiber technology. The invention realizes that the light source emits light with different illumination intensities when a reference signal and a blade signal are measured, always leads a detector to be capable of responding in high sensitivity, solves the problem of limited detection range of a photoelectric detector, improves the signal-to-noise radio of an instrument and ensures the measurement accuracy of the instrument by an adjustable constant current drive circuit.
Owner:BEIHANG UNIV
Method for measuring and evaluating spatial droplet deposition based on plant canopy porosity
ActiveCN109490158AAccurate droplet volumeOvercoming the drawbacks of inaccurate dataPermeability/surface area analysisPorosityStatistical analysis
The invention relates to a method for measuring and evaluating spatial droplet deposition based on plant canopy porosity. According to the method, a plant canopy is divided into plural layers, separators are arranged between adjacent layers; water sensitive paper is placed uniformly on the separators as much as possible; a plant runs through a spray frame with constant flow rate at a fixed speed,the deposition data of the water sensitive paper is calculated and analyzed to obtain the deposition of droplets in unit area; the deposition is multiplied with the areas of the separators to obtain the total deposition of the n separator, which is penetration in the n layer of the plant canopy, and the difference of deposition between the (n-1) separator and the n separator is the deposition of the n plant canopy, which reflects the deposition situation of the droplets in the n plant canopy, and the percentage of the total deposition of the n separator in the total deposition of the (n-1) separator reflects the penetration situation of the droplets in the plant canopy, and the relationship of the porosity and deposition percentage of each layer can be obtained by utilizing Gaussian process regression, and important accordance is provided to research of penetration and deposition distribution of droplets inside the plant canopy.
Owner:SHANDONG AGRICULTURAL UNIVERSITY
Measuring method for dust fall quantity of plant canopy leaf surface
InactiveCN103411847APracticalSimplify the measurement stepsWeighing by removing componentMeasuring instrumentDistilled water
The invention relates to a measuring method for the dust fall quantity of a plant canopy leaf surface. The measuring method comprises the following steps: (1) selecting a well-grown plant, and picking 15-20 leaves from the upper, middle and lower parts of a plant canopy; (2) placing the healthy leaves picked from each plant in numbered envelopes, taking the envelopes to a lab, shearing the petioles of the leaves, and drying the leaves without the petioles in a drying box under the temperature being 105 DEG C; (3) weighing the leaves in the step (2) to obtain W1; (4) soaking the leaves after the weighing in the step (3) in distilled water for 20-30 minutes, so as to enable falling dust on the front surface of the leaves to be cleaned, after washing of the leaves by the distilled water, drying the washed leaves till the weight is constant, and weighing for the second time to obtain W2; (5) wetting the leaves in the step (4), and measuring the total leaf area S of each plant by a leaf area measuring instrument, wherein a computational formula of the dust fall quantity is as follows: FDC (g.m<-2>)=(W1-W2) / S*10000. The method is simple, easy to operate, and can be used for providing new indexes for air quality monitoring; by using the method, the breakthrough and the progress of research on influence of leaf surface dust fall on the plant can be realized.
Owner:TARIM UNIV
Assessment method for penetrability of plant liquid medicine canopy
ActiveCN104568697ASimple structureReduce weightPermeability/surface area analysisPorosityEngineering
The invention relates to an assessment method for penetrability of a plant liquid medicine canopy. The assessment method comprises the following steps: (1) by taking a multi-layer instrument shelter as a plant canopy model, inserting blades, regulating and recording quantity of blades at each layer, blade layer spacing, single-layer blade porosity, an interlayer blade arrangement mode and blade elastic modulus; (2) arranging water-sensitive paper on front and back surfaces of each blade; (3) vertically placing the multi-layer instrument shelter on a measuring point, performing liquid medicine spray experiment above the multi-layer instrument shelter, and recording wind speed of the canopy surface; (4) collecting the water-sensitive paper, and recording parameter information such as grain size of deposited fog drops and a rate of deposition; (5) processing data, and quantitatively analyzing a relationship between parameters. According to the assessment method, by regulating the parameters of the canopy perpendicular wind speed, the single-layer blade porosity, the blade layer spacing, the blade elastic modulus and the like, the correlation between a penetration rate of fog drops with different grain sizes and each parameter is analyzed and extracted, so that a theoretical direction is provided for required drug delivery dose for plant protection and a fog drop grain size range.
Owner:NONGXIN TECH BEIJING CO LTD
Virtual plant canopy photosynthesis effective radiation distribution simulating method of multi-layer data structure
ActiveCN105701313AImprove Simulation EfficiencyReduce demandGeographical information databasesSpecial data processing applicationsTerrainTrack algorithm
The invention relates to a virtual plant canopy photosynthesis effective radiation distribution simulating method of a multi-layer data structure. The method includes the following steps of establishing a virtual plant model and a virtual plane scene high in fidelity and complexity, collecting plant canopy photosynthesis effective radiation intensity values through a related astronomical parameter method or a field measurement method, sequentially establishing the three-layer data structure with a virtual plane scene single-tree geometrical model, a scene and a terrain through a data structure starting method, establishing a direct solar radiation and sky scattering PAR ray vector plane, sequentially tracing all ray vectors on the ray plane through a Monte Carlo ray tracing algorithm and a turtle shell algorithm, traversing the three-layer data structure with the scene, the single tree and the terrain, judging whether rays intersect with triangular patches or not, counting the sky visible rates of all the triangular patches, and calculating direct solar radiation PAR and sky scattering PAR of all the triangular patches to obtain a virtual plane canopy PAR three-dimensional space distribution simulating result.
Owner:FUZHOU UNIV
Automatic spray irrigation frost prevention system and method for plants
ActiveCN103563697AReduced risk of frost damagePrevent sprayingSelf-acting watering devicesPlant protectionSoil scienceWater source
The invention discloses an automatic spray irrigation frost prevention system and method for plants, belongs to the field of agro-meteorological disaster monitoring and control, and solves the problem of excessive water utilization caused by an excessive operating mode and a simple control mode of irrigation frost prevention. The method comprises the steps as follows: water in a pond or a lake is upwards sprayed in the lower direction of plant canopy by a nozzle after pressurized by a water pump; and a wet bulb temperature higher than a critical plant freeze injury temperature by a certain threshold is set as a set value, after the set value is compared with wet bulb temperatures of areas at different planting temperatures, switching on and switching off of the water pump and electromagnetic valves in areas are controlled, so that the spray irrigation frost prevention in the areas is controlled respectively. With the adoption of the automatic spray irrigation frost prevention system and method for plants, automatic spray irrigation frost prevention of plants can be realized, the water utilization amount is reduced, and accordingly, the automatic spray irrigation frost prevention system and method are suitable for plant frost prevention of areas with the water source condition.
Owner:JIANGSU UNIV
Plant water stressed state automatic monitoring method and system
InactiveCN106067169AAvoid damageSolve online automatic fusionImage enhancementImage analysisMonitoring systemStressed state
The invention provides a plant water stressed state automatic monitoring method and a plant water stressed state automatic monitoring system. The plant water stressed state automatic monitoring method includes the following steps that: the infrared image and visible light image of plants and soil moisture content information of the corresponding plants are obtained; image fusion information is obtained according to the infrared image and the visible light image; the water stressed state information of the plants is obtained according to the image fusion information and the soil moisture content information; and corresponding instruction information is emitted according to the water stressed state information of the plants, so that a water replenishment device can be made to enter a corresponding working state. According to the plant water stressed state automatic monitoring method and the plant water stressed state automatic monitoring system of the invention, the infrared image and the visible light image are obtained through an infrared camera and a visible light camera; the temperature information of a plant area is obtained; corresponding measures are taken according to the temperature information; and therefore, problems in on-line automatic fusion of an infrared image and a visible light image and automatic identification of a plant area on the infrared image can be solved, a plant canopy temperature region can be obtained, irrigation time of the plants can be accurately judged, and the plants can be prevented from being damaged.
Owner:BEIJING RES CENT FOR INFORMATION TECH & AGRI
Lighting system for preventing plant disease damage
InactiveCN102186332ASuppress manufacturing costElectrical apparatusSaving energy measuresUltraviolet lightsUv b radiation
Owner:PANASONIC CORP
Measuring method of leaf area index
InactiveCN101788283AImprove measurement efficiencyReduce labor intensityMeasurement devicesEcologic studySoil science
The invention relates to a measuring method of leaf area index, belonging to the ecological study field. The invention solves the problems of the prior art that the leaf area index measured by LAI-2000 has low accuracy, and the harvest method for measuring the leaf area index has large labor intensity and low efficiency. The method of the invention comprises the following steps: 1. placing an LAI-2000 plant canopy analyzer 3.5 away from the edge of a leaf, measuring under the condition that the measuring time is 10:00-14:00, the light Intensity is 8000-10000Lux, the wide speed is 7-level and the air humidity is 10-90%; 2. obtaining an effective leaf area index; and 3. substituting the effective leaf area index in the following formula: leaf area index of broad-leaved forest=1.5457*effective leaf area index-0.0414 or leaf area index of coniferous forest=0.9651*effective leaf area index+0.4115, thus completing the measurement of leaf area index. The method can increase the measuring efficiency, reduce the labor intensity and increase the accuracy.
Owner:NORTHEAST FORESTRY UNIVERSITY
Unmanned aerial vehicle image plant canopy information extraction method based on ensemble learning
PendingCN110956187ARapid refactoringHigh precisionCharacter and pattern recognitionFeature extractionUncrewed vehicle
The invention provides an unmanned aerial vehicle image plant canopy information extraction method based on ensemble learning, and the method comprises the following steps: S1, obtaining an unmanned aerial vehicle visible light remote sensing image, and carrying out data preprocessing on the unmanned aerial vehicle visible light remote sensing image; S2, performing image segmentation by adopting an object-oriented method to complete object feature extraction; and S3, adopting a Stacking ensemble learning model to realize extraction of plant canopy information. According to the method, an object-oriented and Stacking integrated machine learning method is combined, so that the parameter consumption of model construction in an information extraction process is greatly reduced, and manpower, material resources and time are greatly saved; and moreover, the traditional mode that a single classifier is used for carrying out pattern recognition on the high-resolution remote sensing image is broken through, the method can give full play to the advantages of each algorithm model, is more excellent in generalization, stability and applicability, and greatly improves the extraction precision and speed of the plant canopy information based on the unmanned plane image.
Owner:AGRI INFORMATION INST OF CAS +1
Device for measuring light distribution in crop canopy
The invention provides a device for measuring light distribution in a crop canopy. The device comprises a sensor module and a data acquisition module. The sensor module comprises a photosynthetic active radiation sensor and a magnetic sensor, the photosynthetic active radiation sensor is used for measuring photosynthetic active radiation information of a point to be measured in the plant canopy, and the magnetic sensor is used for measuring position information of the point to be measured. The module acquisition module connected with the sensor module and is used for acquiring the photosynthetic active radiation information and the position information measured by the sensor module and storing the acquired photosynthetic active radiation information and position information. The device for measuring light distribution in the crop canopy can conduct synchronous measurement on the photosynthetic active radiation information and the position information of the point to be measured in the crop canopy and provide an effective method which enables people to have a more accurate understanding of light distribution in the crop canopy.
Owner:BEIJING RES CENT FOR INFORMATION TECH & AGRI
Method for extracting single plant canopy from high-resolution unmanned aerial vehicle visible light remote sensing image
ActiveCN111738165AHeavy burdenAvoid complicated backgroundInternal combustion piston enginesCharacter and pattern recognitionSensing dataData set
The invention discloses a method for extracting a single plant canopy from a high-resolution unmanned aerial vehicle visible light remote sensing image. The method comprises the following steps: 1, preprocessing, cutting, cleaning and marking a data set on acquired unmanned aerial vehicle remote sensing data; 2, obtaining a canopy preliminary segmentation result by using a deep convolutional neural network U-Net, training a U-Net model by using the labeled data set, and segmenting the image by using the trained U-Net model to obtain a probability grey-scale map; and 3, optimizing the probability grey-scale map based on a mark control watershed algorithm to obtain a final single plant canopy segmentation result. According to the invention, the U-Net algorithm is used to avoid the complex background of the original image under the natural condition to a certain extent; the initial contour of the canopy is obtained through interference of uneven illumination intensity on canopy segmentation, a mark control watershed algorithm can well segment the canopy of a single plant and is used for optimizing the canopy result extracted by U-Net and extracting canopy information of the single plant, the canopy density precision is higher, and the canopy density speed is higher.
Owner:AGRI INFORMATION INST OF CAS +1
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com