140 results about "Standing tree" patented technology

In a method for determining the dry mechanical strength for a green wood, the improvement comprising: (a) illuminating a surface of the wood to be determined with a reduced range of wavelengths in the VIS-NIR spectra 400 to 1150 nm, said wood having a green moisture content; (b) analyzing the surface of the wood using a spectrometric method, the method generating a first spectral data of a reduced range of wavelengths in VIS-NIR spectra; and (c) using a multivariate analysis technique to predict the mechanical strength of green wood when dry by comparing the first spectral data with a calibration model, the calibration model comprising a second spectrometric method of spectral data of a reduced range of wavelengths in VIS-NIR spectra obtained from a reference wood having a green moisture content, the second spectral being correlated with a known mechanical strength analytical result obtained from the reference wood when dried and a having a dry moisture content.

The invention relates to a point cloud data based single tree three-dimensional modeling and morphological parameter extracting method. The point cloud data based single tree three-dimensional modeling and morphological parameter extracting method comprises obtaining three-dimensional surface point cloud data of high density standing trees through a three-dimensional scanner or other live-action measuring modes, calculating the shortest distance from points to root nodes through a k-nearest neighbor graph, performing hierarchical clustering on the data according to distance, enabling centers of clustering hierarchies to be served as framework points of a limb system and meanwhile extracting corresponding semi-diameter of the framework points; connecting the framework points to establish a topological structure of branches and grading the branches; performing three-dimensional geometrical reconstruction on branches through a generalized cylinder body; adding leaf models to the limb system to form into a vivid three-dimensional single tree model; extracting height of trees, diameter of breast height and crown breadth of the standing trees in the point cloud. The point cloud data based single tree three-dimensional modeling and morphological parameter extracting method can rapidly and semi-automatically extract tree important geometrical parameters and topological information to form into the high vivid single tree geometric model and has wide application prospects and values in fields such as agriculture and forestry survey, ecological research and landscape planning.

A method and apparatus for assessing standing tree stems for readiness for harvesting, or for determining cutting points for processing of felled tree stems, logs, or wood pieces, or for assessing stems, logs, or wood pieces for a particular end use, includes scanning with short-wave or microwave electromagnetic energy and processing the scan data to produce an image indicating the external shape or dimensions of the stem or log and hidden internal characteristics and their position, and assessing the image. Knots and / or whorls, which are not visible from the exterior and the depth of the clear wood sheath from the surface, may be determined.

A tooth for a circular saw or a mower drum that can be used to cut standing trees or brush and undergrowth. The tooth has four cutting edges arranged in a first pair of opposed cutting edges that are generally straight and a second pair of opposed cutting edges that are generally concave. The tooth is mounted in a holder in a first or second cutting position that orients a cutting edge of the first or second pair to physically contact and effect a cutting method to a cuttable material. In a first cutting method, a generally straight cutting edge contacts the material, resulting in a slicing action. In a second cutting method, a generally concave cutting edge contacts the material, resulting in a gouging action. Teeth in the circular saw or brush mower alternate between first and second cutting positions, allowing both cutting methods to be applied to cuttable material.

The invention discloses a standing tree orientated felling device. A left base plate and a right base plate are fixed together through six identical pins and a connecting plate, three fixing hydraulic cylinders, two locating hydraulic cylinders and a tree pushing hydraulic cylinder are mounted on the base plates respectively, and a chain saw, an electric cylinder, an oil tank and a manual oil pump are further fixed to a base, the piston rods of the three fixing hydraulic cylinders stretch to push against the bottom of a tree trunk, the base and the tree trunk are fixed, the electric cylinder drives the chain saw to rotate, the tree trunk is sawn off through the chain saw in the rotating process, the locating hydraulic cylinders prevent the tree trunk from falling to two sides, and a standing tree falls in a fixed direction under the pushing of the piston rods in the tree pushing hydraulic cylinder. The standing tree orientated felling device can be suitable for standing trees of different diameters, improve production efficiency, save manpower and reduce cost.

The invention discloses a method for measuring the green quantity of an irregular crown-shaped standing tree, which comprises the steps of: using a three-dimensional laser scanning system to obtain the standing tree point cloud data; cutting the crown of the whole standing tree from top down in multi-section and equal-distance manner; using a least square method to fit the curved surfaces of the cut cones and circular truncated cones to obtain all the curved surfaces so as to obtain the volumes and the surface areas of the curved surfaces; and finally performing accumulation and summation on the equidistantly cut cones and circular truncated cones to obtain the volume and the surface area of the whole tree crown. The method greatly improves the accuracy of measuring the green quantity of the standing tree, reduces the working amount, improves the working efficiency and has the omnibearing characteristic.

A system for non-destructive testing using acoustic techniques includes first and second measuring probes and an electronic unit. Each probe includes a penetrating end and a retaining flange end. Each probe further includes a handle slideably coupled to the probe and a transducer for detecting stress waves. The probes are lightweight, portable, and rugged for field testing wood products.

The invention discloses a tree canopy structure information extraction method based on a rib method and the crown height ratio. The measurement method comprises the steps that firstly, based on single-shot echo point cloud data, a crown height model is established, namely, on the basis of a digital terrain model, non-vegetation information is filtered out to obtain a reference map only containing vegetation distribution and height information; secondly, based on a local maximum search method of an active window, the vertex of each single standing tree is extracted from the reference map; thirdly, on the basis of a treetop detection result, crown projection boundary identification is carried out through the rib method, single trees are separated, the boundary position of the crown of each tree is determined, and a crown boundary identification result is obtained; fourthly, in combination with the treetop detection result and the crown boundary identification result, a single-tree crown volume distribution diagram is generated through a crown volume calculation method based on a telescopic circle and the crown height ratio; fifthly, the image average gradient is calculated to inverse the canopy porosity and correct calculation errors caused by a large number of gaps existing among branches and leaves inside the crowns, so that the crown volume inversion accuracy obtained in the fourth step is further improved.

The invention discloses a method that under the condition that a standing tree is not hewed down, the height of the standing tree, the diameter and the growing stock of any place of the standing tree are measured, and particularly, through the method of edge extraction of a forest in a digital photo, relevant data are measured. The stereoscopic photograph is applied to the forestry, the standing tree does not need to be hewed down, and the height of the standing tree, the diameter and the growing stock of any place of the standing tree can be measured, the new method is brought to the comprehensive analysis of growth conditions of trees, and the method enables forestry investigation to be more convenient and accurate. The method that the common camera is used for carrying out stereoscopic photograph tree measurement is simple and easy to operate, as long as people strictly operate according to technical requirements, the satisfactory investigation result can be obtained.

The invention provides a processing method for manufacturing an imitated cupressus funebris material by utilizing Chinese fir. The processing method comprises a cutting technology for Chinese fir logs, a standing tree pressurization and perfusion technology, a non-defect curing technology for the Chinese fir logs infused with phenolic resin, a flat-sawn board lumber making technology of the cured Chinese fir logs and a repair technology, wherein the standing tree pressurization and perfusion technology comprises the following steps: fixing a homemade rubber sleeve to one end of the Chinese fir; connecting the other end of the rubber sleeve to an air compressor and pressurizing the inside of the rubber sleeve after adding the water-soluble phenolic resin in the other end of the rubber sleeve, wherein the water-soluble phenolic resin enters from one end of the Chinese fir log under the action of pressure and flows out from the other end of the Chinese fir log after penetrating through the overall Chinese fir, so that the aim of impregnating quickly is fulfilled. The imitated cupressus funebris material manufactured by the processing method has the characteristics that the wood is hard, the hardness is high, the density is high, the textures are consistent with that of cupressus funebris; moreover, the cedar resources are rich, the raw material source is wide, and the cost is low, so that the cost of the imitated cupressus funebris material is greatly reduced.

The invention discloses a standing-tree diameter measuring device based on laser ranging and image technologies. The standing-tree diameter measuring device has the structure that a laser range finder is connected with a mobile phone based on an Android system through a data wire; a prime lens is arranged on the mobile phone based on the Android system; the laser range finder is used for transmitting the measured distance value u between the mobile phone and a standing tree to the mobile phone while the mobile phone based on the Android system takes a photo; and the actual diameter of the standing tree can be calculated according to a calibration function, the measured distance and the number of pixels of the standing-tree diameter on an image. By adopting the standing-tree diameter measuring device based on the laser ranging and image technologies, the diameter value of a trunk of the standing tree can be quickly detected.

The invention discloses a standing tree comprehensive detection device based on the intelligent fusion technology. A laser beam subject to collimation and beam-expanding is irradiated on a trunk (10) with the tree diameter required for measurement, a camera (3) is used for shooting the image of the trunk, where a laser light spot is arranged, the actual size of the laser light spot serves as a scale, the tree diameter can be measured as per pixel number of the laser light spot in the image, an encoder (5) is used for measuring the rotating angle of the laser beam, the straight-line distance between a vertical rod (7) and the trunk (10) can be measured through a laser rangefinder (4), and the height of the trunk can be calculated out as per the geometric relationship.

The invention discloses a method for measuring crown volume based on an elevation isoline method. In the method, under the condition of not hewing down standing trees, three-dimensional space coordinates of a crown is obtained through a prism-free laser overall meter so as to draw contour lines of the crown, and a digital elevation model of the crown is established by using the counter lines, andthen the volume of the crown is calculated; therefore, work efficiency is greatly improved, labor intensity is reduced, and particularly, serious damage to forests due to the fact that section diameters are obtained and distinguished by hewing down a great amount of trees during the traditional tree volume measurement process can be avoided. The method has a broad market prospect.

The invention discloses a technology for measuring and calculating tree ages. According to the technology, a mathematical model is established for the tree ages by acquiring the information of slope, exposure, elevation, thickness of soil, breast-high diameter and the like under standing tree growing conditions so as to acquire the tree ages. A mathematical inversion model is established by collecting the information of breast-high diameter, annual ring and growing conditions (slope, exposure, elevation, thickness of soil) of felled trees in the field, and then the tree ages can be calculated through the mathematical model by using the information of breast-high diameter, elevation, slope, exposure, thickness of soil and the like, wherein the information is measured and calculated in the field. The technology for measuring and calculating the tree ages greatly improves accuracy in calculating the tree ages and overcomes the shortcoming that the existing methods of hewing down analytic trees, turning intake growth cones and the like are large in destructiveness, tedious in process and the like.

The invention provides a standing tree laser scanning method based on a three-dimensional laser scanning lifting platform, and aims to solve the problems that scanning and measurement data precision of standing trees is not high, acquired optical images are dim. The standing tree laser scanning method based on the three-dimensional laser scanning lifting platform comprises the following steps: positioning a platform; starting a generator set; starting a computer and a three-dimensional laser scanning device; starting central control equipment; carrying out scanning operation and data storage; stopping and resetting; closing a system; and closing the computer and the generator set. The standing tree laser scanning method based on the three-dimensional laser scanning lifting platform has the beneficial effects that complete standing tree trunk surface morphology scanning point cloud data can be acquired, so that complete standing tree trunk surface three-dimensional images can be accurately restored in the computer, the working amount of later image stitching is reduced, and meanwhile, speed and stability of signal acquisition are increased.

The invention relates to a standing tree information acquisition method and device based on images. The method comprises the steps that calibration parameters of a camera are obtained, and the calibration parameters are coordinate transformation parameters between a world coordinate system and an image coordinate system; the images which include measured standing trees and are photographed based on the calibration parameters are obtained; the number of pixels corresponding to the measured parameters of the measured standing trees in the images is metered; and the measured parameters of the measured standing trees are calculated according to the number of the pixels corresponding to the measured parameters, the number of the pixels corresponding to a reference object in the images photographed based on the calibration parameters and the coordinates of the reference object in the world coordinate system inversely calculated based on the calibration parameters. According to the technical scheme, standing tree information acquisition convenience and information acquisition efficiency can be effectively enhanced, and realization cost of standing tree information acquisition can be reduced at a larger extent.

A tooth for a circular saw or a mower drum that can be used to cut standing trees or brush and undergrowth. The tooth has four cutting edges arranged in a first pair of opposed cutting edges that are generally straight and a second pair of opposed cutting edges that are generally concave. The tooth is mounted in a holder in a first or second cutting position that orients a cutting edge of the first or second pair to physically contact and effect a cutting method to a cuttable material. In a first cutting method, a generally straight cutting edge contacts the material, resulting in a slicing action. In a second cutting method, a generally concave cutting edge contacts the material, resulting in a gouging action. Teeth in the circular saw or brush mower alternate between first and second cutting positions, allowing both cutting methods to be applied to cuttable material.

The invention discloses a laser point cloud data-oriented broad-leaved tree real leaf modeling and deforming method comprising the following steps: first, acquiring an accurate leaf border from a scanned leaf point cloud through a polynomial fitting method, and calculating the main vein of the leaf surface based on a computer graphics method; second, fitting leaf surface point cloud data by using a double-cubic generalized tensor product Bezier curved surface to remove scanning error caused by wind shaking and eliminate noise point cloud; and finally, defining different mechanical properties of the veins and mesophyll according to a solid mechanics force model, constructing a stress deformation equation of a nonlinear finite element, calculating the leaf shape after different load forces are applied, and simulating the real deformation of leaves in a natural environment. According to the invention, forestry indexes are acquired by a computer through automatic analysis, and the leaf area index indicating dynamic growth change of standing trees under different forest stand conditions can be described accurately. The method is of certain use value.

The invention provides an arbor three-dimensional green quantity method and belongs to the technical field of measurement methods, which particularly relates to a three-dimensional green quantity method for arbors. Based on three-dimensional green quantity method for arbors, the crown actual shape of an arbor can be truly reflected. The method comprises the steps of scanning standing trees of different tree species and different diameter classes by means of a three-dimensional laser scanner; scanning each individual sample tree; conducting the treatment within the industry according to the specific process of coordinate correction; conducting the corresponding point matching method and compulsively constraining the data of each observation station in the coordinate system of a single instrument; three-dimensionally modeling; piecing together point cloud data measured by all observation stations to be a complete point cloud model of a measurement target; modeling the detail of the measurement target to complete the modeling of the measurement target; generating the point cloud data of trees; application handling; generating a cross-section drawing, a projection drawing and a contour map; processing the point cloud data and outputting the processed point cloud data via a data interface; and conducting the measurement on the model.

The invention discloses a nondestructive measuring method for the intension of a live standing tree. The method includes the steps that: step one, a live standing tree to be measured is selected, and the spread velocity V of a mechanical wave is measured at an area to be measured; step two, a consecutive and integrated tree core with diameter of 3 to 12 mm is taken radially in the area to be measured; step three, the mass of the tree core is weighted and the volume of the tree core is measured on the spot, thereby obtaining the density Rho of the tree core; step four, an elastic modulus Ed is calculated according to the formula that E is equal to V<2>Rho; wherein, the Ed is the elastic modulus of the live standing tree. The invention can perform examination without needing to cut down the live standing tree, not only the detection efficiency is high, but also the detection labor intensity is small.

A forest environment energy collection method is used for completely utilizing the existing energy of forest environment such as biological electric energy and wind energy and collecting and storing the energy to solve the power supply problem of application of wireless sensor network nodes in the forest. The forest environment energy collection method includes a standing tree soil voltage collection and connection circuit, a power generation small windmill, a wind power collection and voltage doubling rectifying circuit, a standing tree soil electric and wind power automatic switching circuit, a passive boosting circuit and an energy accumulation storage circuit. The collection method is characterized in that voltage signals between stranding trees and the soil where the trees grow and voltage signals generated by the power generation small windmill arranged on the trees under the effect of natural wind in the forest can be collected, the collected voltage signals of the standing trees and the soil where the trees grow and voltage signals generated by the power generation small windmill and passing through the voltage doubling rectifying circuit are compared, the signals with high voltage are automatically connected with the passive boosting circuit, the voltage is boosted to 3v by the passive boosting circuit and collected by a super capacitor, energy is stored, and a lithium battery is charged under the control of a micro loss intelligent charging controller.

The invention provides a living standing tree rapid identification method based on a hybrid multi-scale feature model, belongs to the field of detection, and solves the problems in the prior art. The living standing tree rapid identification method based on the hybrid multi-scale feature model comprises the steps that the visible light image and the infrared thermal image of a target area are acquired; feature level image fusion is performed on the acquired visible light image and the infrared thermal image by using a live wire + contourlet algorithm; the directional gradient histogram of a living standing tree target area is established for the fused feature level image; image features are extracted on different scales of the directional gradient histogram so that the hybrid multi-scale feature model is established; the hybrid multi-scale feature model acts as a positive sample, and the target living standing tree in the feature level image is identified; and the identified target living standing tree is marked and saved in the feature level image. The method has the advantages that the forestry environment can be rapidly identified, the operation targets can be distinguished, the operation efficiency can be enhanced and the operation safety can be guaranteed.

The invention discloses a method for expanding one-step installation yarding area of a cable yarding crane, and the method comprises the following steps: 1, taking a carrying cable vertical ground projection as an axis line for arrangement of 20 meters border lines respectively on 20 meters width positions of both sides of the axis line; 2, finding a standing tree or stump within the inner side of the 20 meters border lines; 3, arranging a guide pulley on the standing tree or stump; 4, adjusting a running car to a proper position; 5, drawing a hoisting rope to the position of the guide pulley on the standing tree or stump, manually opening a lock catch of the guide pulley, loading the hoisting rope into a pulley groove, locating a wood grasping hook on the end part of the hoisting rope on the outer side of the guide pulley, locking the lock catch, and beginning yarding working in the area beyond the20 meters border lines. Under the premise of being in compliance with the rules of safe operation, the method minimizes the dismounting times of the cable yarding crane, is time and labor saving, and can be promoted and applied in yarding working in the forest area.

The invention discloses a laser point cloud and aerodynamics-based standing tree wind resistance analysis method. The method comprises the following steps of obtaining tree point cloud data and separating branches and leaves; contracting the branch point cloud by adopting a Laplace algorithm; segmenting the branch point cloud data into different layers from bottom to top; solving a clustering center point of each height layer, and fitting a limb of each height layer according to the clustering center point; classifying different limb skeletons of the standing tree into main limbs and secondarylimbs; completing the affiliation of the standing tree leaf point cloud data; establishing a forest stand model, loading wind power to the forest stand model; analyzing dynamic pressure in the foreststand according to the turbulence model and the fluid-solid coupling model. The method has the advantages that the calculation complexity is moderate, the spatial structure characteristics and the growth parameter changes of the standing trees can be better described, the qualitative and quantitative evaluation of the wind resistance of the standing trees under the typhoon is realized, the accuracy is high, and an accurate theoretical basis is provided for the cultivation and planting of the trees and the construction of wind prevention.

The invention discloses a method for carrying out forestry investigation with a three-dimensional laser scanner utilized, and relates to the field of the forestry investigation, in particular to the method for carrying out the forestry investigation with the three-dimensional laser scanner utilized. According to a range of an investigation forest region, reference targets are arranged, and the positions of sites are confirmed. The sites are erected, and data are scanned. Point cloud data of each site are spliced. The diameter at breast height, the tree height and the crown diameter of woods are measured. Amount of growing stock of standing trees is calculated. A three-dimensional forest region map is drawn up. The method for carrying out the forestry investigation with the three-dimensional laser scanner utilized has the advantages of being capable of greatly reducing workload and working time of forestry investigation personnel, and improving investigation efficiency. Meanwhile, the high-precision three-dimensional laser scanner ensures precision of measured data, the trees do not need to be cut down when in investigation, and natural environment is protected. The point cloud data are utilized to build the three-dimensional topographic map of the forest region, a three-dimensional digit file of the forest region is built conveniently, the method can be combined with a 3S technology, and protection, management and subsequent investigation of the forest region are convenient.

A method for breeding the lamp stand tree includes such steps as preparing seedbed, sowing, seedbed management, seedling transplantation, and management for irrigation and applying fertilizer. Its advantage is short period.

Disclosed is a technical method for measuring the height of a live standing tree and a diameter of the tree at any tree height position by using a robot. The method comprises that the tree-climbing type robot is introduced under the condition that a target tree is shielded, the robot sends a signal to a ground receiver on the treetop, then the tree height is measured, coordinates of four points of a tree trunk surface are measured at the position of the same height in the descending process of the robot, and then any diameter of the live standing tree is further calculated. The robot which is a novel high-tech result is introduced into the measurement of the tree height, the robot is flexible and convenient to operate, the height of the live standing tree and the diameter of the tree at any tree height position are measured, the diameter at any position of the live standing tree can be measured conveniently and accurately, and relative data are provided for accurate measurement of live standing tree stock volume. According to the method, measurement errors due to various natural environments and weather factors are overcome, and the working amount and the measuring difficulty of measuring workers are greatly reduced.