CN113587825A - Tree height measuring device and using method - Google Patents
Tree height measuring device and using method Download PDFInfo
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- CN113587825A CN113587825A CN202110878797.5A CN202110878797A CN113587825A CN 113587825 A CN113587825 A CN 113587825A CN 202110878797 A CN202110878797 A CN 202110878797A CN 113587825 A CN113587825 A CN 113587825A
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- 238000000034 method Methods 0.000 title claims description 17
- 239000013307 optical fiber Substances 0.000 claims abstract description 31
- 238000009434 installation Methods 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 18
- 230000003287 optical effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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Abstract
The invention discloses a tree height measuring device, comprising: the structure such as support base, vertical slide bar, optical fiber sensor, adjustable shelf, measuring rack, rope body, elastic block can once measure the radius difference of the trees of multiunit equidistance, then utilize the quick height that obtains trees of the computational formula that corresponds. The problem that in the prior art, in a mountain or in an area where trees are concentrated, due to the fact that the trees are limited by geographic positions and leaves in a shielding mode, the height of the trees is difficult to measure, even if the height of partial trees can be measured, a measurer needs to run to different positions to measure the height of the trees is solved.
Description
Technical Field
The invention relates to a tree height measuring device and a using method thereof, belonging to the technical field of forestry.
Background
The forestry is a production department which protects the ecological environment, keeps ecological balance, cultures and protects forests to obtain woods and other forest products, utilizes the natural characteristics of the forests to play a role in protection, is one of important components of national economy, and is provided with a special statistical department for carrying out statistics on the circumference of trees, the diameter of the trees and the height of the trees so as to obtain data capable of accurately analyzing and managing the forestry.
Traditional tree height measurement device relies on optical range finder to measure the height of trees completely, but in the mountain or the more concentrated region of trees, receive geographical position (the altitude that the measurement was based on in a distance is different) and the restriction that the leaf sheltered from, hardly measure the height of trees, even can measure the height of partial trees, still need the measurement person to make a round trip to go to different positions and measure.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a tree height measuring device and a using method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme: a tree height measuring device comprising: the inner side surface of the supporting base is provided with a concave arc-shaped surface;
the bottom end of the vertical sliding rod is fixedly connected to the upper surface of the supporting base 1;
further comprising:
the number of the optical fiber sensors is set to be 4-8, and the optical fiber sensors are vertically and equidistantly distributed on the side surface of the vertical sliding rod;
the movable frame is connected to the side face of the vertical sliding rod in a sliding mode, and the inner side of the movable frame is provided with a concave arc-shaped face;
the end parts of the measuring frames are connected with the inner side surfaces of the movable frames through hinges, and the number of the measuring frames is two and is close to the two ends of the movable frames;
the two ends of the rope body are respectively movably connected with the end parts of the two measuring frames;
a crescent-shaped gap is formed between the inner side surface of the movable frame and the back surface of the measuring frame, the elastic block is positioned on the inner side of the gap, the inner side surface of the movable frame is fixedly connected with the elastic block, and a pressure sensor is arranged at the connection position;
the fastener, the installation notch has been seted up to the side of vertical slide bar, the installation notch is located the top of the optical fiber sensor of top, the fastener is located the inside of installation notch and passes through pin swing joint, be provided with the spring between the medial surface of fastener and installation notch, the spring sets up the top at the pin.
As a further description of the above technical solution, the method further includes:
the inner side rib is shaped like a sector ring, is fixedly connected to the top of the supporting base, and is close to the inner side edge of the supporting base;
the reinforcing rib, reinforcing rib fixed connection is between support base and inboard muscle, the reinforcing rib is provided with two sets of symmetries and sets up the both sides at vertical slide bar.
As a further description of the above technical solution, the method further includes:
the annular seat, annular seat fixed connection is at the back of adjustable shelf, the side at vertical slide bar is established to annular seat cover, the inboard of adjustable shelf and be close to both ends and all seted up the arc breach, the inside fixedly connected with adjustable shelf of arc breach, slotted hole is seted up at the back of adjustable shelf.
As a further description of the above technical solution:
a connecting seat is arranged at one end of the measuring frame, the connecting seat is movably connected with the movable seat through a pin shaft, a connecting strip is arranged at the other end of the measuring frame, a guide rod is fixedly connected to the outer side surface of the measuring frame, and the outer end of the guide rod penetrates through the groove-shaped hole;
the inner side surface of the measuring frame is provided with a mounting hole, the inner side of the mounting hole is movably connected with a rotating wheel, and the central shaft of the rotating wheel is perpendicular to the vertical sliding rod.
As a further description of the above technical solution:
the both ends of the rope body all are provided with first connecting block, the outer terminal surface of first connecting block is provided with the screw hole, first connecting block is inlayed in the inside of the rope body to be provided with anti-skidding piece, first connecting block outer end threaded connection has the second connecting block, a tip of second connecting block is provided with the screw thread post, screw thread post and screw hole screw-thread fit, another tip fixedly connected with U type frame of second connecting block, U type frame cover is on the connecting strip.
As a further description of the above technical solution:
further comprising:
the central processing unit is electrically connected with the pressure sensor and the optical fiber sensor, the central processing unit is externally connected with a display screen, the optical fiber sensor sends out a sensing instruction, the central processing unit is controlled to read the numerical value of the pressure sensor, and the processed numerical value is displayed through the display screen.
As a further description of the above technical solution:
the outer side face of the clamping piece is provided with a notch, and the top end of the clamping piece extends out of the mounting notch to be fixedly connected with a nose bridge.
The invention provides a tree height measuring method, which comprises the following steps:
leaning the inner ribs on the inner side of the support base against the side face of the tree, and contacting the bottom face of the support base with the ground or a measurement reference surface;
sliding the movable frame to the upper part to clamp the annular seat at the notch of the clamping piece;
connecting a rope body to enable the measuring frame to be held on the side face of the tree;
pressing the nose bridge to enable the clamping piece to contract inwards, and enabling the annular seat to be separated from the limit of the clamping piece and slide downwards;
when the optical fiber sensor slides downwards in the step, the annular seat sequentially covers the optical fiber sensor from top to bottom, and when the optical fiber sensor senses a signal, the pressure sensor is triggered to detect the primary force F to obtain data F1、F2、 F3、F4、F5、F6；
Obtaining the height of the tree:
wherein D is the diameter of the bottom tree; d is a fixed value; Δ h is a distance between two adjacent optical fiber sensors 3; t (F) is the change quantity delta R and F of the tree radius of two adjacent measuring points1、F2、F3、F4、F5、 F6As a function of (c).
Preferably, d has a value of 10-20 cm.
Preferably, the tree radius variation Δ R of two adjacent measurement points is:
wherein, F1、F2、F3、F4、F5、F6Is the measured value of the pressure sensor 7; k is the elastic coefficient of the elastic block(ii) a And R is the radius of the height of the measuring point of the tree.
The invention has the beneficial effects that: compared with the prior art
1) The invention is provided with a vertical slide bar, a movable frame and a measuring frame structure, an elastic block and a pressure sensor are arranged between the movable frame and the measuring frame, the inner side surface of the measuring frame is attached to a tree during measurement, the outer side of the measuring frame is propped against the elastic block, the distance between the stress F of the elastic block and the length a of the elastic block is related (actually, the variation of the length of the elastic block is in direct proportion to the stress F, and the elastic coefficient and the original length of the elastic block are known quantities), the distance between the radius of the movable frame and the radius of the tree can be approximate to the length a of the elastic block, so that the stress F of the elastic block can be measured to calculate the radius of the height of the tree, the distance between the height of a measuring point and the height of the next N measuring points can be directly obtained through a plurality of groups of pressure sensors which are arranged at equal intervals, and then the height of the whole tree can be conveniently measured by using a formula, compared with the existing measurement adopting an optical distance sensor, the device has obvious practicability, solves the problems that some leaves are more numerous and the measuring light cannot be aligned to the measuring position, has quick measurement and more labor-saving performance compared with the existing method for calculating the tree height inside a right triangle formed by utilizing the included angle of the light of a measuring point and the distance between the measuring point and a tree, does not need a measurer to run back and forth for measurement, and can measure in any mountain area or places where trees are more concentrated;
2) the inner side of the supporting base is provided with the inner side rib, when the tree-shaped support is used, the inner side surface of the inner side rib is attached to the surface of a tree, and the reinforcing rib increases the connecting strength between the inner side rib and the supporting base plate;
3) the back of the annular seat is provided with the annular seat, the annular seat can be matched with the vertical sliding rod to drive the movable frame to slide up and down, and the sliding is stable;
4) according to the invention, the guide rod structure is arranged on the back of the measuring frame and can be matched with the groove-shaped hole, when the measuring frame is used, the measuring frame is subjected to upward friction force, the guide rod can increase the resistance of the measuring frame to upward bending ground force and increase the structural strength of the measuring frame, and the groove-shaped hole is arranged in a long groove shape, so that the hinge opening and closing movement of the measuring frame cannot be influenced;
5) the tree measuring device is provided with the rope body, two ends of the rope body are detachably connected with the measuring frame, and when the tree measuring device is used, an annular ring is formed between the measuring frame and is used for holding a tree for one circle, so that the measuring frame is prevented from being opened outwards during measurement to influence a measurement result;
6) by arranging the central processing unit and the display screen structure, the tree diameter value can be directly obtained after a formula is input, and the tree diameter value is very convenient to use;
7) according to the invention, by arranging the clamping piece structure, when the annular seat moves upwards (moves to the inner side of the notch), the annular seat can be clamped by the clamping piece, the movable frame does not need to be manually held (if the annular seat does not automatically slide downwards under the action of the gravity of the movable frame, the annular seat can be fixed by holding by a person), and after the rope body is connected, the clamping piece can be retracted and the movable frame can slide downwards by pressing the nose bridge part;
8) the invention provides a method for measuring the height of the tree by using the device, and provides a calculation formula of a measurement result;
interpretation of this formula:
the measured conicity value of the surface of the tree (the trunk of the tree is simplified into a circular table with a certain conicity), namely the ratio of the height to the radius difference of two adjacent measuring points of the tree;
9) and the tree radius Δ R is:
interpretation of this formula: the elongation of the elastic blocks at two adjacent measuring points, namely the ratio of the variation of the measured value F to the elastic block K, 6 groups of data are measured, and the data are processed by adopting the formula, so that the measuring error is reduced.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at B;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is an enlarged view taken at A in FIG. 3;
FIG. 5 is a schematic front view of the present invention
FIG. 6 is a schematic side view of the present invention;
FIG. 7 is a schematic view of a connecting head structure according to the present invention;
FIGS. 8-10 are schematic diagrams of the method of use of the present invention;
FIG. 11 is a circuit connection block diagram of the present invention.
Illustration of the drawings:
1. a support base; 101. inner ribs; 102. reinforcing ribs; 2. a vertical slide bar; 3. an optical fiber sensor; 4. A movable frame; 401. an arc-shaped notch; 402. a movable seat; 403. a slot-shaped hole; 404. an annular seat; 5. a measuring frame; 501. mounting holes; 502. a rotating wheel; 503. a guide bar; 504. a connecting strip; 505. a connecting seat; 6. a rope body; 601. a first connection block; 6011. an anti-slip member; 602. a second connecting block; 6021. a threaded post; 603. a U-shaped frame; 7. a pressure sensor; 8. installing a notch; 9. a fastener; 901. a recess; 902. a bridge of the nose; 10. a spring; 11. an elastic block; 12. a central processing unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 11, the present invention provides a tree height measuring apparatus, including: the inner side surface of the supporting base 1 is provided with a concave arc-shaped surface;
the bottom end of the vertical sliding rod 2 is fixedly connected to the upper surface of the supporting base 1;
further comprising:
the number of the optical fiber sensors 3 is set to be 4-8, the optical fiber sensors 3 are vertically and equidistantly distributed on the side face of the vertical sliding rod 2, the optical fiber sensors 3 adopt intensity modulation type sensors, and when the optical fiber sensors 3 are shielded by the annular seat 404, an induction signal is sent out to control a degree meter of the pressure sensor 7 to obtain a numerical value;
the movable frame 4 is connected to the side face of the vertical sliding rod 2 in a sliding mode, and the inner side of the movable frame 4 is provided with a concave arc-shaped face;
the end parts of the measuring frames 5 are connected with the inner side surfaces of the movable frames 4 through hinges, and the number of the measuring frames 5 is two and is close to the two ends of the movable frames 4;
the two ends of the rope body 6 are respectively and movably connected with the end parts of the two measuring frames 5;
a crescent-shaped gap is formed between the inner side surface of the movable frame 4 and the back surface of the measuring frame 5, the elastic block 11 is positioned on the inner side of the gap, the inner side surface of the movable frame 4 is fixedly connected with the elastic block 11, and a pressure sensor 7 is arranged at the connection position;
Further comprising:
the inner rib 101 is shaped like a sector ring, the inner rib 101 is fixedly connected to the top of the supporting base 1, and the supporting base 1 is close to the inner side edge of the supporting base 1;
the reinforcing ribs 102 are fixedly connected between the supporting base 1 and the inner side ribs 101, and two groups of reinforcing ribs 102 are symmetrically arranged on two sides of the vertical sliding rod 2.
Further comprising:
A connecting seat 505 is arranged at one end of the measuring frame 5, the connecting seat 505 is movably connected with the movable seat 402 through a pin shaft, a connecting strip 504 is arranged at the other end of the measuring frame 5, a guide rod 503 is fixedly connected to the outer side surface of the measuring frame 5, and the outer end of the guide rod 503 passes through the groove-shaped hole 403;
the inner side surface of the measuring frame 5 is provided with a mounting hole 501, the inner side of the mounting hole 501 is movably connected with a rotating wheel 502, and the central axis of the rotating wheel 502 is perpendicular to the vertical sliding rod 2.
Both ends of the rope body 6 are provided with first connecting blocks 601, the outer end face of the first connecting block 601 is provided with a threaded hole, the first connecting block 601 is embedded in the rope body 6 and is provided with an anti-slip piece 6011, the outer end of the first connecting block 601 is in threaded connection with a second connecting block 602, one end of the second connecting block 602 is provided with a threaded column 6021, the threaded column 6021 is in threaded fit with the threaded hole, the other end of the second connecting block 602 is fixedly connected with a U-shaped frame 603, and the U-shaped frame 603 is sleeved on the connecting strip 504.
Further comprising: the central processing unit 12, the central processing unit 12 and the pressure sensor 7, the optical fiber sensor 3 all electric connection, the central processing unit 12 is still external to have a display screen, and the optical fiber sensor 3 sends the response instruction, controls the central processing unit 12 to read the numerical value of pressure sensor 7 to numerical value after the display screen display is handled.
The outer side surface of the clamping piece 9 is provided with a notch 901, and the top end of the clamping piece 9 extends out of the mounting notch 8 and is fixedly connected with a nose bridge 902.
Referring to fig. 1-10, the present invention provides a method of using a tree height measuring device, comprising the steps of:
when the optical fiber sensor 3 slides downwards in step 4, the annular seat 404 sequentially covers the optical fiber sensor 3 from top to bottom, and when the optical fiber sensor 3 senses a signal, the pressure sensor 7 is triggered to detect the primary force F to obtain data F1、F2、F3、F4、F5、F6；
Obtaining the height of the tree:
wherein D is the diameter of the bottom tree; d is a fixed value; Δ h is a distance between two adjacent optical fiber sensors 3; t (F) is the change quantity delta R and F of the tree radius of two adjacent measuring points1、F2、F3、F4、F5、F6As a function of (c).
The value of d is 10-20 cm.
The tree radius variation delta R of the two adjacent measuring points is as follows:
wherein, F1、F2、F3、F4、F5、F6Is the measured value of the pressure sensor 7; k is the elastic coefficient of the elastic block 11; and R is the radius of the height of the measuring point of the tree.
The invention has the beneficial effects that:
1) the invention is provided with a vertical slide bar 2, a movable frame 4 and a measuring frame 5, an elastic block 11 and a pressure sensor 7 are arranged between the movable frame 4 and the measuring frame 5, the inner side surface of the measuring frame 5 is attached to a tree during measurement, the outer side of the measuring frame pushes against the elastic block 11, the distance between the stress F of the elastic block 11 and the length a of the elastic block 11 is related (actually, the variation of the length of the elastic block 11 is in direct proportion to the stress F, and the elastic coefficient and the original length of the elastic block 11 are known quantities), the distance between the radius of the movable frame 4 and the radius of the tree can be approximate to the length a of the elastic block 11, so that the radius of the height of the tree can be measured by measuring the stress F of the elastic block 11, the distance between the height of a measuring point and the height of the next N measuring points can be directly obtained by a plurality of pressure sensors 7 which are arranged at equal intervals, as the height of the tree in the forestry is measured, only the height of the trunk which can be utilized by the tree needs to be obtained, the trunk can not be used as useful wood after the general trunk is less than 10cm, and the bottom of the trunk is thick and is tapered upwards with certain taper, the invention can conveniently measure the height of the whole tree by using a formula according to the characteristic that the trunk of the tree is tapered upwards with certain taper, compared with the existing measurement adopting an optical distance sensor, the invention has obvious practicability, solves the problems that a plurality of leaves can be more numerous and the measuring light can not be aligned to the measuring position, and compared with the existing method for calculating the height of the tree by using the included angle of the light of the measuring point and the distance between the measuring point and the tree, the method has the advantages of quick measurement, labor saving and no need of a measurer to run back and forth, the measuring device can measure in any mountain area or places where trees are concentrated;
2) the inner side of the supporting base 1 is provided with the inner side rib 101, when the tree-shaped support is used, the inner side surface of the inner side rib 101 is attached to the surface of a tree, and the reinforcing rib 102 is used for increasing the connecting strength between the inner side rib 101 and the supporting base plate 1;
3) according to the invention, the annular seat 404 is arranged on the back of the annular seat 404, the annular seat 404 can be matched with the vertical sliding rod 2 to drive the movable frame 4 to slide up and down, and the sliding is relatively stable;
4) according to the invention, the guide rod 503 structure is arranged on the back of the measuring frame 5 and can be matched with the groove-shaped hole 403, when the measuring frame 5 is used, the upward friction force is applied to the measuring frame 5, the guide rod 503 can increase the resistance of the measuring frame 5 to upward bending, the structural strength of the measuring frame 5 is increased, and the groove-shaped hole 403 is arranged in a long groove shape, so that the hinge opening and closing movement of the measuring frame 5 is not influenced;
5) according to the tree measuring device, the rope body 6 is arranged, the two ends of the rope body are detachably connected with the measuring frame 5, and when the tree measuring device is used, an annular ring is formed between the rope body and the measuring frame 5 and is used for holding a tree for one circle, so that the measuring frame 5 is prevented from being opened outwards during measurement to influence a measuring result;
6) by arranging the central processing unit 12 and the display screen structure, the tree diameter value can be directly obtained after a formula is input, and the tree diameter value is very convenient to use;
7) according to the invention, by arranging the clamping piece 9 structure, when the annular seat 404 moves upwards (moves to the inner side of the notch 901), the annular seat can be clamped by the clamping piece 9, the movable frame 4 does not need to be held by a person (if the annular seat does not slide downwards automatically under the action of the gravity of the movable frame 4, the annular seat can be fixed by holding by the person), and after the rope body 6 is connected, the clamping piece 9 can be retracted and the movable frame 4 can slide downwards by pressing the nose bridge 902 part;
8) the invention provides a method for measuring the height of a tree by using the device, and provides a calculation formula of a measurement result;
interpretation of this formula:
the measured conicity value of the surface of the tree (the trunk of the tree is simplified into a circular table with a certain conicity), namely the ratio of the height to the radius difference of two adjacent measuring points of the tree; 9) The tree radius Δ R is:
interpretation of this formula: the elongation of the elastic blocks 11 at two adjacent measuring points, namely the ratio of the variation of the measured value F to the elastic block K, 6 groups of data are measured by the invention and are processed by adopting the formula, so that the measuring error is reduced.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (10)
1. A tree height measuring device comprising: the inner side surface of the supporting base (1) is set to be a concave arc surface;
the bottom end of the vertical sliding rod (2) is fixedly connected to the upper surface of the supporting base (1);
it is characterized by also comprising:
the number of the optical fiber sensors (3) is set to be 4-8, and the optical fiber sensors are vertically and equidistantly distributed on the side face of the vertical sliding rod (2);
the movable frame (4) is connected to the side face of the vertical sliding rod (2) in a sliding mode, and the inner side of the movable frame (4) is provided with a concave arc-shaped face;
the end parts of the measuring frames (5) are connected with the inner side surfaces of the movable frames (4) through hinges, and the number of the measuring frames (5) is two and is close to the two ends of the movable frames (4);
the two ends of the rope body (6) are respectively movably connected with the end parts of the two measuring frames (5);
the measuring device comprises an elastic block (11), a crescent-shaped gap is formed between the inner side surface of the movable frame (4) and the back surface of the measuring frame (5), the elastic block (11) is positioned on the inner side of the gap, the inner side surface of the movable frame (4) is fixedly connected with the elastic block (11), and a pressure sensor (7) is arranged at the connection position;
fastener (9), installation notch (8) have been seted up to the side of vertical slide bar (2), installation notch (8) are located the top of one optical fiber sensor (3) of the top, fastener (9) are located the inside of installation notch (8) and pass through pin swing joint, be provided with spring (10) between the medial surface of fastener (9) and installation notch (8), spring (10) set up the top at the pin.
2. The tree height measuring device of claim 1, further comprising:
the inner side rib (101) is shaped like a fan-ring, the inner side rib (101) is fixedly connected to the top of the supporting base (1), and the supporting base (1) is close to the inner side edge of the supporting base (1);
the reinforcing rib (102) is fixedly connected between the supporting base (1) and the inner side rib (101), and two groups of reinforcing ribs (102) are symmetrically arranged on two sides of the vertical sliding rod (2).
3. The tree height measuring device of claim 2, further comprising:
annular seat (404), annular seat (404) fixed connection is at the back of adjustable shelf (4), the side of vertical slide bar (2) is established to annular seat (404) cover, arc breach (401) have all been seted up to the inboard of adjustable shelf (4) and be close to both ends, the inside fixedly connected with adjustable seat (402) of arc breach (401), slotted hole (403) are seted up at the back of adjustable shelf (4).
4. The tree height measuring device of claim 3, wherein: a connecting seat (505) is arranged at one end of the measuring frame (5), the connecting seat (505) is movably connected with the movable seat (402) through a pin shaft, a connecting strip (504) is arranged at the other end of the measuring frame (5), a guide rod (503) is fixedly connected to the outer side surface of the measuring frame (5), and the outer end of the guide rod (503) penetrates through the groove-shaped hole (403);
the inner side surface of the measuring frame (5) is provided with a mounting hole (501), the inner side of the mounting hole (501) is movably connected with a rotating wheel (502), and the central shaft of the rotating wheel (502) is perpendicular to the vertical sliding rod (2).
5. The tree height measuring device of claim 4, wherein: the both ends of the rope body (6) all are provided with first connecting block (601), the outer terminal surface of first connecting block (601) is provided with the screw hole, inlay the inside at rope body (6) in first connecting block (601) to be provided with anti-skidding piece (6011), first connecting block (601) outer end threaded connection has second connecting block (602), a tip of second connecting block (602) is provided with threaded column (6021), threaded column (6021) and screw hole screw-thread fit, another tip fixedly connected with U type frame (603) of second connecting block (602), U type frame (603) cover is on connecting strip (504).
6. The tree height measuring device of claim 5, further comprising:
central processing unit (12), central processing unit (12) and pressure sensor (7), the equal electric connection of optical fiber sensor (3), central processing unit (12) are still external to have the display screen, and optical fiber sensor (3) send the response instruction, and control central processing unit (12) reads the numerical value of pressure sensor (7) to numerical value after the display screen display is handled.
7. The tree height measuring device of claim 6, wherein: a notch (901) is formed in the outer side face of the clamping piece (9), and the top end of the clamping piece (9) extends out of the mounting notch (8) and is fixedly connected with a nose bridge (902).
8. A method of using the tree height measuring device of claim 7, comprising the steps of:
step 1, leaning inner ribs (101) on the inner side of a supporting base (1) against the side faces of a tree, and enabling the bottom face of the supporting base (1) to be in contact with the ground or a measuring reference surface;
step 2, sliding the movable frame (4) to the upper side to enable the annular seat (404) to be clamped at the notch (901) of the clamping piece (9);
step 3, connecting a rope body (6) to enable the measuring frame (5) to be held on the side face of the tree;
step 4, pressing down the nose bridge (902) to enable the clamping piece (9) to contract inwards, and enabling the annular seat (404) to be separated from the limit of the clamping piece (9) and slide downwards;
when the optical fiber sensor slides downwards in the step 4, the annular seat (404) sequentially covers the optical fiber sensor (3) from top to bottom, and when the optical fiber sensor (3) senses a signal, the pressure sensor (7) is triggered to detect the primary force F to obtain data F1、F2、F3、F4、F5、F6；
Obtaining the height H of the tree:
wherein D is the diameter of the bottom tree; d is a fixed value; delta h is the distance between two adjacent optical fiber sensors (3); t (F) is the change quantity delta R and F of the tree radius of two adjacent measuring points1、F2、F3、F4、F5、F6As a function of (c).
9. The method of using a tree height measuring device of claim 8, wherein: the value of d is 10-20 cm.
10. The method of using a tree height measuring device of claim 8, wherein: the tree radius variation delta R of the two adjacent measuring points is as follows:
wherein, F1、F2、F3、F4、F5、F6Is the measured value of the pressure sensor (7); k is the elastic coefficient of the elastic block (11); and R is the radius of the height of the measuring point of the tree.
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