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3962 results about "Leaf blade" patented technology

Rotor blade for a wind power plant

The present invention concerns a rotor blade for a wind power plant having an aerodynamic profile comprising a rotor blade leading edge and a rotor blade trailing edge. The invention also concerns a rotor blade tip for a rotor blade having an aerodynamic profile with a pressure and a suction side, wherein the rotor blade tip is curved or angled in its end region in the direction of the pressure side of the rotor blade. In order further to reduce the levels of sound emission of wind power plants the rotor blade is curved or angled in its edge region in the direction of the trailing edge of the rotor blade in the plane of the rotor blade. In that respect the invention is based on the realization that, in the case of a rotor blade which does not go to a point at the tip, the effective rotor blade area is maintained unreduced precisely in the outer region in which the effect is greatest. The curve or angling of the end region of the rotor blade however provides that the trailing edge is displaced rearwardly in the end region of the rotor blade so that the flow at the rotor blade trailing edge is detached with a time delay in the outer region. Alternatively to attain the object of the invention a rotor blade can be developed in such a way that the ‘outer region’ narrows. That configuration of the rotor blade tip is based on the realization that the decreasing blade depth results in a reduced flow around the blade tip as the energy thereof is previously distributed to the trailing edge vortices but at the same time the effective rotor blade area is also reduced. The angling of the rotor blade tip provides that the effective rotor blade depth remains at its optimum as far as the angled rotor blade tip.
Owner:WOBBEN ALOYS

Device for fast detection of chlorophyll content in leaf blades, modeling method and detection method

The invention discloses a device for fast detection of chlorophyll content in leaf blades, a modeling method and a detection method. The device comprises a CCD camera, a hyperspectral scanner, an object stage, an electric control translation stage, a motion controller, a computer and a light source supply system with a feedback controller, wherein the CCD camera is connected with the hyperspectral scanner and used for collecting a spectral image of a crop loaded on the object stage scanned by the hyperspectral scanner; the computer is connected with the CCD camera and used for processing the spectral image and obtaining a prediction model for detecting the chlorophyll content; the motion controller is connected with the electric control translation stage, and the object stage is positioned on the electric control translation stage; the motion controller is used for adjusting the position, the translation speed and the translation distance of the electric control translation stage; and the light source supply system is used for providing a light source for the crop loaded on the object stage. The technical scheme of the invention can achieve the purposes of fast and pollution-free detection and has the advantages of high detection accuracy, low cost, simple structure of the detection device and good economic benefits.
Owner:CHINA AGRI UNIV

Method for obtaining leaf area index and average leaf inclination of rice canopy by using hemisphere photographic process

ActiveCN101916438AReal-time accessImage analysisPorosityHemispherical photography
The invention discloses a method for obtaining the leaf area index and the average leaf inclination of rice canopy by using a hemisphere photographic process. The method comprises the following steps of: collecting a hemisphere image of rice canopy from bottom to top inside the rice canopy by using a digital hemisphere shooting system based on a fisheye lens; after performing gray conversion and binaryzation on the hemisphere image, obtaining the canopy porosity under the zenith angle at a viewing angle of 57 degrees, and calculating the rice canopies LAI and ALIA under the condition of the single zenith angle at the viewing angle of 57 degrees based on the Beer-Lambert law and a poisson model as well as the two characteristics of the blade projection function of the rice canopy; simulating the leaf inclination distribution of the rice canopy by an elliptic function and optimizing the rice canopies LAI and ALIA calculated by using the single-angle method so as to rapidly acquire the rice canopies LAI and ALIA. The rice canopies LAI and ALIA can be obtained in real time without picking up rice blade outdoors for destructive artificial measurement, and basic parameters for monitoring the rice growth in real time and remotely estimating the yield of rice are provided.
Owner:ZHEJIANG UNIV

Method and device for quickly detecting area of leaf blade based on mobile phone

The invention discloses a method and device for quickly detecting the area of a leaf blade based on a mobile phone. The method comprises the following steps of: selecting a pure-color opaque flat plate of which the color of a front face is different from that of the leaf blade under test as a background plate, wherein the area of the background plate is greater than that of the leaf blade; fixing a reference object with an area of SR on the front face of the background plate, wherein the color of the reference object is different from those of the background plate and the leaf blade under test; placing the leaf blade under test on the front face of the background plate and acquiring a digital picture through image pickup of the mobile phone; performing graying, filtration, geometrical correction, binarization and region connected label processing on the picture to divide the picture into three regions, namely a background region, a reference object region and a region of the leaf blade under test; traversing picture data to obtain total number of pixels of the background plate, the reference object and the leaf blade under test; and finally, automatically calculating the area of the leaf blade under test by the mobile phone according to a formula through the total number of the pixels of the reference object and the leaf blade under test and the area of the reference object given by a user. Through the method and the device, the measuring steps are simplified, the detection time is shortened, and the measurement accuracy is improved.
Owner:NORTHWEST A & F UNIV

Process technique for burley tobacco in blend type cigarette

ActiveCN101268857AEvenly heatedGood for bad breathTobacco preparationEngineeringRaw material
The invention discloses a burley tobacco processing and treating technic in a blended type cigarette. The technic performs a burley tobacco leaf blade making workshop section, a burley tobacco making leaf shred workshop section, and a leaf shred mixing workshop section. The burley tobacco processing and treating technic is used for processing and treating a burley tobacco which is used as an individual formula module in the blended type cigarette, and is impenetrated in the whole process from leaf blade making to leaf shred marking; aiming at the treatment of the material of the burley tobacco, for example, the feed liquid of the burley tobacco is applied by steps and proportion; the baking and the drying of the burley tobacco are performed after cutting shred; the existing burley tobacco baking mode is substituted, a burley tobacco leaf shred baking and drying process mode is adopted, the water ratio and the temperature of the exported leaf shred is fed back and controlled; the processing route of the existing burley tobacco processing technic is changed, a processing technic for shred mixing is adopted. The burley tobacco processing and treating technic can adopt different processing parameters and routes according to the needs of products and different qualities and characters of different burley tobacco raw materials, thus the aesthetic quality of the blended type cigarette is improved, the process flow is simpler, and the processing method is more flexible.
Owner:XIAMEN TOBACCO IND

Processing equipment for pulverizing kitchen solid rubbish

The invention relates to a smashing device for processing solid kitchen wastes, which comprises a wet crusher and a pressure filter, wherein, an upper knife and a lower knife are arranged inside a shell of the wet crusher and fixedly arranged on the same rotating shaft, a fixed pore plate and a movable pressure plate are arranged inside the shell of the pressure filter, the pressure plate is positioned above the pore plate and provided with a pressure filtering drive mechanism that drives the pressure plate to move upward and downward, and a material outlet of the wet crusher is connected with a material inlet of the wet crusher through a connecting tube. The upper knife and the lower knife both take a shape of a leaf blade and keep a certain distance between each other, a ring-shaped inward convex structure is arranged on a channel inside the shell that is between the upper knife and the lower knife, the pore plate is arranged on an accessory with a fourth height at the lower part of the crusher shell, and a screw rod is connected with the pressure plate. The smashing device with the system has simple structure and strong applicability, and can smash the solid kitchen wastes, press and filter the solid kitchen wastes into filter mass, thus being favorable for subsequent processing and using.
Owner:BEIJING HENGYECUN S&T

Tissue culture and rapid propagation method for pinellia tuber plant

The invention relates to a tissue culture and rapid propagation method for a pinellia tuber plant and belongs to the technical field of plant cell engineering. Organs such as sterile blades, leaf stalks, cluster buds and the like of pinellia tuber are used as inoculating materials. The method comprises the following steps of: transplanting the inoculating materials into an intermittent submerged culture reactor, and performing two stages of proliferating and inducing, and rooting and generating and culturing tubers; and after the proliferating culture is finished, replacing a proliferation culture medium with a rooting and tuber generating culture medium under the aseptic condition so as to promote the forming of the tubers of the pinellia tuber. By the method, the automation degree in the production process of pinellia tuber seedlings is greatly improved, the human input is reduced during the culture, and the proliferation rate is greatly improved. The pinellia tuber seedlings which are produced by the reactor have the advantages of no pathogenic bacteria, uniform and stable heredity and the like. The survival rate is obviously improved, the labor cost is obviously lowered, and the guarantee for producing a great number of high-quality seedlings and isolated tubers at low cost is provided. By the method, the seedling quality during the plantation of pinellia tuber medicinal materials is improved, the seedling cost is lowered, and economic benefits are obviously improved and the same time.
Owner:NANJING UNIV OF TECH

Method of diagnosing nutritious condition of crop in plant field

From the crop of a predetermined area in a plant field under exposure to natural light, a reflectivity of the light having relation to crop information such as nitrogen content rate is measured by a camera; the crop information as first crop information is obtained from the first crop related formula established in advance for obtaining the crop information from the reflectivity; light is irradiated on crop leaf blades in the same area as the predetermined area and an amount of the light is measured; the crop information as second crop information is obtained from the second crop related formula established in advance for obtaining the crop information from the amount of the light; differences are calculated from the first crop information and the second crop information; the first crop information is obtained from the unknown crop in the predetermined area within the crop field of the same area; the first crop information is corrected based on the differences; and the nutritious diagnosis of the crop in the field is conducted by the corrected first crop information. In conducting diagnosis of crop by measuring the reflection light amount from the crop, since compensation or correction is performed, no great errors occur caused by differences in the measurement locations and the planting densities, and the diagnosis of the crop is simple and easy and, more over, the precision in the measuring is enhanced.
Owner:SATAKE CORP

Manufacturing method and fixture of integral bladed-disk wax mold

The invention discloses a manufacturing method and a fixture of an integral bladed-disk wax mold. According to the invention, an integral bladed-disk wax pattern is divided into single blades and a disk shaft. Processes of separated pressing, precise fixture positioning and wax mold welding assembling are adopted. The integral wax pattern is precisely cast. According to the invention, the disk shaft is fixed on an assembling fixture; the blades are sequentially positioned on positioning points on the fixture, and are welded onto the disk shaft. Blade bodies and channel inner walls with high precisions are adopted in the positioning of the blades, such that good consistency is provided for the blades. When the wax pattern is assembled, positioning points are positioned on the blade bodies;blade body positioning points are consistent with processing positioning points, primary standards of cold and hot processing are consistent, such that blade dimensional precision of the whole cast is optimally improved, throat areas between blades are ensured, and flow rate homogeneity is ensured. Positioning parts of the fixture can be adjusted according to measured dimensions of parts, such that the volume of flow rate can be changed according to directional positions of angles of the blades. Therefore, repairing or even rejecting risks caused by unqualified integral mold dimensions are avoided, production period is saved, and production cost is reduced. With the method provided by the invention, hard processes are turned easy, product precision is improved, and production efficiency is improved.
Owner:AECC AVIATION POWER CO LTD

Straw cutting, crashing and sieving integrated device and method

The invention discloses a straw cutting, crashing and sieving integrated device and a method and belongs to the technical field of agricultural machines. The straw cutting, crashing and sieving integrated device comprises a sieving chamber, a cutting and crashing chamber, a first cyclone separator, a second cyclone separator and a storage bin. According to the straw cutting, crashing and sieving integrated device provided by the invention, low-speed sieving is distinguished from high-speed cutting and crashing, and the sieving capacity of a material is enhanced due to the agitation effect of sieving blades, so that a thin material can be sufficiently sieved, and a coarse and short material can be returned back to the cutting and crashing chamber again for secondary crashing; and meanwhile, the crashing efficiency is improved. The straw cutting, crashing and sieving integrated device provided by the invention has the advantages of compact structure and small occupied area due to the integrated design of the sieving chamber and the cutting and crashing chamber. The straw cutting, crashing and sieving integrated device provided by the invention is applicable to straw resourceful treatment of small-size facility horticulture planting enterprises and individual farmers; the machining environment is improved; the labor intensity is reduced; the machining efficiency is improved; the production cost is reduced; and the high-efficiency production and the sustainable development of facility horticulture cleaning can be promoted.
Owner:万华禾香板业(公安县)有限责任公司
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