138 results about "Standing tree" patented technology

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.

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.

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.

A towable trailored standing tree baler provides independent maneuverability with sufficient structural strength required for baling large trees. A telescopic wheeled frame provides ground support directly underneath a tree branch compression ring and therefore provides a strong structural foundation for pushing the ring upward. The support wheels of the frame can be both steered and tilted so that the apparatus can be centered on the tree even on uneven ground. A compression ring lifting boom utilizes an interconnecting rotation arm between the end of the boom and the compression ring so that the ring may be positioned at a very low starting point close to the ground and then moved accurately upwardly with the circumference of the ring being held level and centered. A specialized lining material on the ring reduces friction against the tree limb bark and therefore reduces tree limb damage.

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.

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 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.

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.

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.