37 results about "Tree measurement" patented technology

This invention discloses an electrical altometer measurement system and its automatic tree measurement method, which is integrated by electrical altometer, PDA and database. The tree measurement method is the following: the electrical altometer measurement process is combined with computer technique; under the aid of electrical altometer and angle gage tree measurement software, it realizes the measurement, judgment, computer automation of the tree measurement process to simultaneously accomplish the indoor and outdoor process. It specially adopts potential computing method combined with current method to measure the tree growth storage more reasonable.

The invention discloses an optimized calculation method for forest stand selective cutting amount based on an electronic tree measurement gun. The method is characterized in that trees are observed via the electronic tree measurement gun so that data of diameter at breast height of the trees, height of the trees and volume of the trees are acquired. Current stand volume and stand volume after a period of time in the future are acquired via a specific algorithm, and selective cutting is performed on increment of latter stand volume according to a certain mode.

The invention discloses a tree diameter at breast height automatic measurer, which relates to a measurement device, particularly relates to a wireless sensor network-based tree diameter at breast height automatic measurer and belongs to the technical field of tree measurement tools. The tree diameter at breast height automatic measurer comprises a binding band; the binding band is a resistance band; one end of the resistance band is provided with a fixed knot and the other end of the resistance band is provided with a mobile knot; the fixed knot is arranged in a fixed knot box, and a first buckle is arranged on the side surface of the fixed knot box; the mobile knot is arranged in a spring pressure box, a second buckle is arranged on the side surface of the spring pressure box, the first buckle and the second buckle are located in the same horizontal plane, and the first buckle and the second buckle are connected via a clamping band; a fixed knot wire and a mobile knot wire are respectively connected onto the fixed knot and the mobile knot, and tail ends of the fixed knot and the mobile knot are sealed in the spring pressure box; tail ends of the fixed knot wire and the mobile knot wire are bent; and the spring pressure box is internally provided with a measurement control unit. The measurement reading is accurate, the efficiency is high, and the safety is good.

The invention discloses a non-contact tree diameter at breast height measuring method and system based on computer vision. Hardware equipment comprises an RFID tag, a smart phone, RFID read-write equipment and handheld equipment. A tree trunk photo with a color label is shot through the smart phone, and the photo is transmitted to a server to be subjected to image processing, and the diameter at breast height of the tree to be measured is obtained after processing; the color label is attached with an RFID label, an RFID read-write device identifies the RFID label of the tree, and the measureddiameter at breast height of the tree and the RFID label of the tree are correspondingly stored in the server. The device in the embodiment of the invention is simple and convenient to carry, and thewhole system can improve the efficiency of tree measurement and management.

The invention provides a method and device for measuring the diameter of a standing tree, which relate to the technical field of tree measuring equipment. Sensor; wherein, the left cutting arm is rotationally connected with the middle ruler arm, and a first rotary joint is formed at the connection; the right cutting arm is rotationally connected with the middle ruler arm, and a second rotary joint is formed at the connection; A middle apex is arranged on the middle ruler arm; the distance between the middle apex and the first revolving joint is equal to the distance between the middle apex and the second revolving joint; the standing tree diameter measuring device has high measurement efficiency, high accuracy, and good portability. It is suitable for the measurement of diameter at breast height of large trees.

The invention discloses a tree growth telemetry method and system based on a directed diffusion protocol, and specifically relates to the tree measurement field of artificial forests, including the steps of: flooding and propagating interest information to data nodes through base station nodes, and acquiring The distance between each node and the base station node, save the interest information and the number of forwarding times when the interest information under each propagation path is forwarded to each node to the node list of the corresponding node; obtain the propagation path with the least number of forwarding times in the propagation path, and use it as the data transmission path, The remaining propagation paths are used as alternative paths; low-energy nodes are screened and path replacement is performed. Compared with the traditional DD protocol, the present invention reduces the gradient establishment process, greatly reduces the network construction time, improves the survival time of the network, and improves the utilization rate of network energy at the same time.

The tree measurement method based on the intelligent terminal lens, the main purpose of the present invention is to overcome the disadvantages of uneasy operation, low efficiency and complicated troubles of using tape measures or large measuring instruments in the past to obtain the best shooting environment, and provide a basis for improving the accuracy of data Valuable guidance. The present invention proposes to develop tree height, diameter at breast height and crown width measurement models by combining technologies such as computer vision, mathematical geometry model, camera calibration and orthogonal test analysis, which are used for the measurement of tree information in garden management, and provide information collection and Management provides an advanced means and tools.

The invention discloses a panoramic normal-case forest sample plot photographing mobile phone device and a tree measuring method thereof. The panoramic normal-case forest sample plot photographing mobile phone device consists of a vertical rod with two supporting sheets, an automatic rotating chassis, and two calibrated mobile phones. The tree measuring method comprises the following steps: firstly, fixing the two calibrated mobile phones on the two supporting sheets of the vertical rod respectively; secondly, under the assistance of a leveling bubble, regulating foot screws of the chassis to enable the panoramic normal-case forest sample plot photographing mobile phone device to keep level; thirdly, opening panoramic photographing modes of the mobile phones, and automatically rotating for one circle to obtain panoramic stereopair of a forest sample plot; finally, by virtue of a transformation relationship between a photogrammetric image space and a photogrammetric object space, acquiring coordinates of standing trees in the sample plot, and determining relative position relationship between the standing trees, wherein according to the transformation relationship between the image space and the object space, breast diameters and tree heights of the standing trees in the sample plot can be acquired. By the tree measuring method, panoramic mobile phone photography is applied to tree measurement in the sample plot, so that the field observation time is greatly saved, the working efficiency is improved, the labor intensity is reduced, and the permanent storage of a field investigation condition is facilitated.

The invention discloses an electronic angle gauge tree measuring instrument and an automatic tree measuring method. The instrument is a combination of an optical angle gauge and a digital camera. It places the CCD area array (photoelectric converter) ② of the digital camera on the focal plane of the optical square gauge. Therefore, the image light signals collected by the telescopic system ① and the microscopic system ③ are digitized after being converted into electronic signals by the CCD. Then it is transmitted to the database through the data communication cable to realize the automation of information collection and recording. The tree measuring method is a combination of the electronic angle gauge tree measuring process and computer technology. With the cooperation of the electronic angle gauge dendrometer, the measurement, judgment and calculation of the tree measurement process are fully automated through the angle gauge tree measurement software, which enables the synchronization of the outside and the industry, which can greatly improve work efficiency and reduce labor intensity. In particular, the stand volume can be obtained without measuring the average height of the stand, which overcomes the difficulties of overlapping tree crowns and poor visibility in the forest, and can further improve the practicability of measuring trees with angle gauges, and has broad market prospects.

The invention discloses a tree measuring method including that sampling point information collected by a non-prism total station in real time is acquired by a processor, the sampling point information includes a highest altitude Ht, a lowest altitude Hb and sampling point coordinates; a tree height H is calculated by the processor according to the highest altitude Ht and the lowest altitude Hb, the tree height H=Ht-Hb; tree crown projected area is calculated by the processor according to the sampling point coordinates. The invention further discloses a tree measuring system. By the aid of the tree measuring system and method, the sampling point information of object trees is accurately and efficiently collected by the non-prism total station in complex terrain situation; and the tree height and the tree crown projected area are calculated by the processor. And meanwhile, when the tree crown projected area is calculated, non-linear tree crown projection is linearized by combining a concave-convex polygon according to tree crown total grow state; the tree crown projection is transformed into an arc polygon with concave arcs and convex arcs to be calculated; and the accuracy is high.

The invention discloses an annual ring width measurement method and an annual ring width measurement system, and relates to the technical field of tree measurement. The method comprises the following steps: taking a tree disk as a base disk; obtaining an annual ring width of each annual ring on the reference disk except for the annual ring closest to the heart center; obtaining the total width of all the annual rings on the tree disk to be measured except for the annual ring closest to the heart center; calculating the annual ring width of each annual ring on the tree disk to be measured except for the annual ring closest to the heart center. Due to the steps, the conventional method for measuring the annual ring width is not applied, so that a lot of actual measurement work is reduced, and the measurement efficiency and the measurement accuracy are improved; furthermore, the annual ring widths of other disks are only needed to be measured once except that the annual ring width of each year on the reference disk is needed to be measured, so that the operation is simple; meanwhile, the annual ring closest to the heart center is measured independently, and is not regarded as a proportionality coefficient, so that the error of other annual ring widths is eliminated.

The invention discloses an automatic leveling optical tree-measuring angle gauge, which is applied in forest survey. The automatic leveling optical tree-measuring angle gauge is provided with a cylindrical shell, two cylindrical ports are parallel planes forming a front observation window and a back observation window; the lower part of the inner side of the shell is fixedly provided with a wedge-shaped mirror, the cylindrical port on one side of the shell is provided with two cusp-shaped gaps, a connecting line of the two gaps is parallel to the upper plane of the wedge-shaped mirror; the top part of the shell is provided with a through hole, a button is arranged in the through hole, a vertical rod is hanged below the button, a vertical rod positioning plate which is parallel to the upper plane of the wedge-shaped mirror is arranged on the vertical rod, and a spring is arranged on the vertical rod positioning plate. The invention has the advantages of compact structure, small and flexible size, convenient carrying, simple operation, accurate measurement and easy implementation, and well solves the problem of automatic slope correction of the wedge-shaped mirror. When the invention is used for measuring a tree, the distance of distinct vision needs no adjustment, the location relationship of real images and virtual images can be easily interpreted, and the invention solves the problem of increased interpretation errors caused by eye fatigue as a result of frequent adjustment of the distance of distinct vision during the tree measurement of all angle gauges of the prior art.