CN113959479A - Standing tree phenological monitoring device and method based on trunk swinging acceleration - Google Patents
Standing tree phenological monitoring device and method based on trunk swinging acceleration Download PDFInfo
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- CN113959479A CN113959479A CN202111218897.1A CN202111218897A CN113959479A CN 113959479 A CN113959479 A CN 113959479A CN 202111218897 A CN202111218897 A CN 202111218897A CN 113959479 A CN113959479 A CN 113959479A
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- 230000001133 acceleration Effects 0.000 title claims abstract description 40
- 238000012806 monitoring device Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000012544 monitoring process Methods 0.000 claims abstract description 88
- 230000005540 biological transmission Effects 0.000 claims abstract description 31
- 238000013480 data collection Methods 0.000 claims abstract description 8
- 230000012010 growth Effects 0.000 claims description 35
- 238000001125 extrusion Methods 0.000 claims description 16
- 238000013016 damping Methods 0.000 claims description 15
- 230000002457 bidirectional effect Effects 0.000 claims description 11
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- 230000008859 change Effects 0.000 description 8
- 238000005259 measurement Methods 0.000 description 4
- 239000002028 Biomass Substances 0.000 description 3
- 238000005562 fading Methods 0.000 description 2
- 230000009605 growth rhythm Effects 0.000 description 2
- 230000028514 leaf abscission Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
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- 238000007664 blowing Methods 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000000701 chemical imaging Methods 0.000 description 1
- 230000035613 defoliation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
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Abstract
The invention discloses a standing tree phenological monitoring device and method based on trunk swinging acceleration, wherein an accelerometer, a data collector, a laser range finder and a data transmission module are respectively arranged on a monitoring shell, anemometers and solar panel groups are respectively arranged on mounting frames on two sides of the monitoring shell, main hanging rings are symmetrically arranged on two side walls of the monitoring shell, a main elastic pull rope and an auxiliary elastic pull rope are sequentially sleeved between the main hanging rings on the two sides, lifting tensioning blocks are arranged at two ends of the monitoring shell, and a lifting assembly is arranged between the monitoring shell and the lifting tensioning blocks. Through utilizing accelerometer, anemometer and data collection station, monitoring trunk swing acceleration forms high frequency, continuous time series data, can monitor standing tree's the matter waiting incident such as turning green, withering, use cost is lower and directly set up monitoring devices on the trunk, changes the monitoring mode that single trunk stands tree matter waiting, need not to move the monitoring element on the monitoring shell, the unified regulation of being convenient for, the operation.
Description
Technical Field
The invention belongs to the technical field of plant phenology observation, and particularly relates to a standing tree phenology monitoring device and method based on trunk swinging acceleration.
Background
The phenological phenomenon refers to the periodic growth event of plants, and has become an important index in the study of land climate change, and how to automatically, intelligently and objectively record the detailed phenological change process of a single plant standing tree for a long time needs to be deeply studied. The ground biomass of the standing trees changes periodically along with time, and the standing trees with different biomass have different accelerations and amplitudes disturbed by wind blowing, so that the ground biomass of the standing trees can be used as important indication information for analyzing the phenological rhythm of the standing trees.
If Chinese patent with application number CN202021657201.6, it discloses a plant phenological monitoring device, which comprises a supporting column, the top of the supporting column is fixedly connected with a receiving plate, the bottom of the outer side of the supporting column is hinged with an installation component distributed in an annular manner, the right side of the receiving plate is fixedly provided with a storage controller, the left side and the right side of the inner part of the receiving plate are both provided with grooves, two grooves are spliced with a transparent plate, the back of the inner side of the receiving plate is fixedly connected with a connecting rod, the front end of the connecting rod is hinged with a connecting plate, the back of the connecting plate is provided with a chute, the back of the inner side of the receiving plate is fixedly provided with an electric push rod, the output end of the storage controller is electrically connected with the input end of the electric push rod, the front end of the electric push rod is hinged with a sliding block, the sliding block extends to the inner part of the chute and is connected with the sliding block in a sliding manner, the positive bottom fixedly connected with dismouting subassembly of connecting plate, the inboard joint of dismouting subassembly has monitoring camera, monitoring camera's output is in memory controller's input electric connection.
However, the above scheme has the following disadvantages:
1. the application patent continuously observes the growth condition of the plants through the monitoring camera, transmits monitoring information to the storage controller for storage, and achieves the effect of monitoring the plant climate according to the change of the broad-spectrum characteristics of the monitored plants, but the monitoring camera adopts a high-resolution digital camera and has higher use cost; the phenological camera analyzes phenology according to a vegetation spectral imaging mode, and a spectrum in a near-ground environment is greatly influenced by an external environment and lacks of spectral calibration, so that the result uncertainty is large; the phenological camera has a large view field, is suitable for comprehensive plant phenological analysis on a landscape scale, and is inconvenient to use on single standing trees;
2. the trunk length and the width of the standing tree are always growing, the growing speeds of different kinds of standing trees are different, the automatic turnover device of the monitoring camera is inconvenient to uniformly adjust, and the operation is complex.
Therefore, we propose a standing tree phenological monitoring device and method based on trunk swing acceleration to solve the above mentioned problems in the background art.
Disclosure of Invention
The present invention provides a device and a method for monitoring standing tree phenological data based on trunk swing acceleration, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a standing tree phenology monitoring devices alive based on trunk oscillating acceleration, includes the monitoring shell, be provided with accelerometer, data collection station, laser range finder and data transmission module on the monitoring shell respectively, and all be provided with the mounting bracket on the monitoring shell both sides wall, both sides be provided with anemograph and solar panel group on the mounting bracket respectively, equal symmetry is provided with the main circle of hanging on the monitoring shell both sides wall, and both sides are relative the main circle of hanging is overlapped in proper order and is equipped with main elasticity stay cord and vice elasticity stay cord between the circle, monitoring shell both ends are provided with the lift and stretch tightly the piece, and the monitoring shell is provided with lifting unit between the piece with the lift and stretch tightly, and both sides vice elasticity stay cord free end sets up respectively the taut piece both sides in lift.
Preferably, the accelerometer can measure horizontal acceleration, accelerometer, anemograph and laser range finder output with data collection station electric connection, laser range finder set up monitoring shell bottom, and the data transmission module can be any one of wired, bluetooth, WIFI, 4/5G, solar panel group comprises solar panel, battery, solar controller and dc-to-ac converter.
Through the setting, the trees to be monitored are convenient to swing and monitor data through the accelerometer, the anemometer and the laser range finder, and remote transmission is carried out through the data transmission module.
Preferably, the input and output ends of the data transmission module are connected with the data acquisition unit, and the solar panel group provides power supply guarantee.
The solar panel provides power supply guarantee.
Preferably, the main elastic pulling rope is sleeved on the trunk, and the damping plate is arranged on the inner surface of the main elastic pulling rope, and the inner surface of the damping plate is of a tooth mouth type structure and is in contact connection with the outer surface of the trunk.
Through the cooperation setting of damping plate and main elasticity stay cord, improved the fixed effect to the trunk, prevent to monitor the landing in the shell use.
Preferably, lifting unit is including setting up the vice circle of hanging of the tight piece both sides of lift tensioning, vice elasticity stay cord free end fixed cover is established on the vice circle of hanging, monitoring shell both ends all are provided with the bearing hole board at the back, be equipped with interior screw hole and spacing hole on the tight piece of lift tensioning respectively, and both ends interior screw hole screw opposite direction sets up on the tight piece of lift tensioning, both ends interior screw hole runs through there is two-way outer screw rod in the tight piece of lift tensioning, and two-way outer screw rod interference runs through in bearing hole board inner circle, and monitors the shell both ends and all is provided with the gag lever post, and the gag lever post runs through in corresponding spacing hole, spacing hole and two-way outer screw rod are parallel arrangement.
Through the cooperation setting of lift tensioning piece, internal thread hole, two-way outer screw rod and gag lever post, when two-way outer screw rod rotated, can make the lift tensioning piece at both ends carry out to or move dorsad.
Preferably, the monitoring shell is provided with a motor at the back, a motor output shaft sleeve is provided with a main bevel gear, the middle position of the bidirectional outer screw rod is sleeved with an auxiliary bevel gear and is in meshed connection with the main bevel gear, one end of the bidirectional outer screw rod is provided with an extrusion force sensor at the outer end of the bearing hole plate, and the output end and the power end of the extrusion force sensor are respectively connected with the data collector and the solar panel set.
Through the cooperation setting of main bevel gear, vice bevel gear, motor and extrusion force sensor, be convenient for rotate two-way outer screw rod to and the elasticity operation to main elasticity stay cord.
The invention also provides a using method of the standing tree phenological monitoring based on the trunk swinging acceleration, which specifically comprises the following steps:
s1, installing a monitoring device: one end of a main elastic stay cord is sleeved on a main hanging ring on one side of a monitoring shell, a trunk to be monitored is sleeved by the main elastic stay cord, the free end of the main elastic stay cord is sleeved on the main hanging ring on the other end of the monitoring shell, meanwhile, an auxiliary elastic stay cord is connected to the sleeved end of the main elastic stay cord, and then a bidirectional outer screw rod rotates through the meshing rotation of a main bevel gear and an auxiliary bevel gear on a lifting tensioning block, the lifting tensioning block performs lifting motion, so that the main elastic stay cord is clamped and fixed on the trunk to be detected under the action of a damping plate;
s2, debugging the monitoring device: electrically connecting an accelerometer, an anemometer, an output end of a laser range finder and an extrusion force sensor with the data collector, connecting a motor control end with an external controller of the data collector, connecting an external data transmission channel through a data transmission module, connecting a power supply end of the electrical equipment with a solar panel set, and backing up, recording and uploading data obtained by the monitoring element through the data collector to set the data as an initial value;
s3, using the monitoring device: the accelerometer and the anemometer transmit horizontal swing acceleration and wind speed data generated when a monitored trunk is subjected to external wind power to the data acquisition unit, the laser range finder transmits the height of a monitoring shell to the data acquisition unit, power supply guarantee is provided through the solar panel group, the data transmission module remotely transmits the monitoring data to the master control chamber, when the section diameter of the trunk of the monitored tree is widened along with the growth of the monitored tree, the extrusion force sensor transmits the monitoring data to the data transmission module, the external controller drives the motor to operate, the tightness of a main elastic pull rope at the periphery of the trunk is adjusted through the matching arrangement of the main conical gear, the auxiliary conical gear, the two-way outer screw rod, the limiting rod and the lifting tightening block, a live standing tree swing index based on the acceleration is established, the live standing tree growth track is simulated through the index, and the key phenological period of the live standing tree is extracted, the growth curve fitting formula is:
Compared with the prior art, the invention has the beneficial effects that: according to the standing tree phenological monitoring device and method based on trunk swing acceleration, trunk swing acceleration is monitored by the aid of the accelerometer, the anemometer and the data collector, high-frequency long-time sequence data are formed, the anemometer can be used for correcting measurement data of the accelerometer in combination with trunk rigidity characteristics, phenological events such as green turning and withering of trees can be monitored, the use cost is low, the device is convenient to use on a plurality of standing trees, the monitoring device is directly arranged on the trunk, the monitoring mode of single-plant standing tree phenological monitoring is changed, monitoring elements on a monitoring shell do not need to be moved, and unified adjustment and operation are facilitated.
Drawings
FIG. 1 is a front cross-sectional structural schematic view of the present invention;
FIG. 2 is a partial schematic view of FIG. 1;
FIG. 3 is a schematic partial cross-sectional view of the right side of FIG. 2;
FIG. 4 is a top view of FIG. 2;
FIG. 5 is an enlarged view of a portion a of FIG. 2;
FIG. 6 is an enlarged view of FIG. 2 at b;
FIG. 7 is an enlarged view of FIG. 3 at c;
FIG. 8 is a diagram showing the variation curve of standing tree with time and acceleration.
In the figure: 1. monitoring the housing; 2. an accelerometer; 3. a data acquisition unit; 4. a data transmission module; 5. a mounting frame; 6. an anemometer; 7. a solar panel group; 8. a main hanging ring; 9. a primary elastic pull rope; 10. a secondary elastic pull rope; 11. lifting the tensioning block; 12. a damping plate; 13. a secondary hanging ring; 14. a bearing orifice plate; 15. an inner threaded hole; 16. a limiting hole; 17. a bidirectional external screw rod; 18. a limiting rod; 19. a motor; 20. a main bevel gear; 21. a secondary bevel gear; 22. a pressing force sensor.
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.
Example 1
The invention provides a standing tree phenology monitoring device based on trunk swinging acceleration as shown in figures 1-7, which comprises a monitoring shell 1, wherein an accelerometer 2, a data collector 3, a laser range finder 101 and a data transmission module 4 are respectively arranged on the monitoring shell 1, mounting frames 5 are respectively fixed on two side walls of the monitoring shell 1 in a screwed mode, anemometers 6 and solar panel sets 7 are respectively fixed on the mounting frames 5 on two sides in a screwed mode, the accelerometer 2 can measure the horizontal acceleration of a trunk, the output ends of the accelerometer 2, the anemometers 6 and the laser range finder 101 are electrically connected with the data collector 3 through an A/D converter, and the anemometers can correct acceleration data detected by the accelerometer 2 by combining with trunk rigidity characteristics;
The input and output ends of the data transmission module 4 are connected with the data acquisition unit 3, and the solar panel group 7 provides power supply guarantee.
All symmetrical welding has main string circle 8 on the monitoring shell 1 both sides wall, and both sides are relative main string has nested in proper order between the circle 8 has main elasticity stay cord 9 and vice elasticity stay cord 10, main elasticity stay cord 9 is nested on the trunk, and main elasticity stay cord 9 internal surface bonds has damping plate 12, and damping plate 12 is the rubber material, and damping plate 12 internal surface is the tooth mouth type structure and is connected with trunk surface contact, and damping plate 12 has improved the fixed effect of friction between main elasticity stay cord 9 and trunk, prevents effectively that it is not hard up to take place between main elasticity stay cord 9 and trunk.
The monitoring shell is characterized in that lifting tensioning blocks 11 are arranged at two ends of the monitoring shell 1, a lifting assembly is arranged between the monitoring shell 1 and the lifting tensioning blocks 11, and the free ends of the auxiliary elastic pull ropes 10 at two sides are respectively arranged at two sides of the lifting tensioning blocks 11.
The lifting assembly comprises auxiliary hanging rings 13 welded at two sides of the lifting tensioning block 11, the free ends of the auxiliary elastic pull ropes 10 are fixedly sleeved on the auxiliary hanging rings 13, the main elastic pull ropes 9 and the auxiliary elastic pull ropes 10 can slide on the main hanging rings 8 through the arrangement, and the tightness of the main elastic pull ropes 9 is adjusted by pulling the auxiliary elastic pull ropes 10;
monitoring shell 1 both ends all welds again or the spiro union has bearing hole board 14, be equipped with interior screw hole 15 and spacing hole 16 on the lifting tension piece 11 respectively, and both ends interior screw hole 15 screw opposite direction sets up on the lifting tension piece 11, both ends interior screw hole 15 runs through there is two-way outer screw rod 17 on the lifting tension piece 11, and two-way outer screw rod 17 interference runs through in bearing hole board 14 inner circle, and monitoring shell 1 both ends all weld spacing rod 18, and spacing rod 18 runs through corresponding spacing hole 16, spacing hole 16 and two-way outer screw rod 17 are parallel arrangement, when two-way outer screw rod 17 rotates, can drive lifting tension piece 11 and produce the rotation trend, and spacing rod 18 has restricted lifting tension piece 11's rotation trend, and then makes lifting tension piece 11 carry out vertical movement to adjust the elasticity of the vice elasticity stay cord 10 of its both sides.
A motor 19 is fixed on the rear of the monitoring shell 1 in a screwed mode, a main bevel gear 20 is sleeved on the output shaft end of the motor 19 in an interference mode, a secondary bevel gear 21 is sleeved on the middle of the bidirectional outer screw rod 17 in an interference mode and is meshed with the main bevel gear 20, the main bevel gear 20 and the secondary bevel gear 21 are driven to rotate through the output shaft end of the motor 19 respectively, so that the bidirectional outer screw rod 17 can be conveniently rotated, the motor 19 is any one of a stepping motor and a servo motor and can control output rotation quantity at a fixed distance, an extrusion force sensor 22 is screwed on the outer end of the bearing hole plate 14 at the upper end, the output power end of the extrusion force sensor 22 is connected with the data collector 3 and the solar panel group 7 respectively, the tensioning force between the main elastic pull rope 9 and the outer surface of the trunk can be changed through the extrusion force sensor 22, and when the tensioning force is smaller than a set value, the tensioning force of the main elastic pull rope 9 can be adjusted, the fixing effect of the monitoring housing 1 is improved.
The invention also provides a using method of the standing tree phenological monitoring based on the trunk swinging acceleration, which specifically comprises the following steps:
s1, installing a monitoring device: sleeving the left end of a main elastic pull rope 9 on a main hanging ring 8 on the left side of a monitoring shell 1, sleeving a trunk to be monitored by the main elastic pull rope 9, sleeving the free end of the main elastic pull rope 9 on the main hanging ring 8 on the right end of the monitoring shell 1, simultaneously connecting an auxiliary elastic pull rope 10 on the sleeved end of the main elastic pull rope 9, and then rotating through the meshing of a main bevel gear 20 and an auxiliary bevel gear 21 to enable a bidirectional outer screw rod 17 to rotate through an inner screw hole 15 on a lifting tensioning block 11, and enabling the lifting tensioning block 11 to perform lifting motion to enable the main elastic pull rope 9 to be clamped and fixed on the trunk to be detected under the action of a damping plate 12;
s2, debugging the monitoring device: electrically connecting an accelerometer 2, an anemometer 6, an output end of a laser range finder 101 and an extrusion force sensor 22 with the data collector 3, connecting a control end of a motor 19 with an external controller of the data collector 3, linking an external data transmission channel through a data transmission module 4, connecting a power supply end of the electrical equipment with a solar panel group 7, and backing up, recording and uploading data obtained by the monitoring elements through the data collector 3 to set the data as initial values;
s3, using the monitoring device: accelerometer 2 and anemometer 6 receive the horizontal swing acceleration and the wind speed data transmission that produce when external wind-force with the monitoring trunk for data collection station 3, laser range finder 101 highly transmits the place of monitoring shell 1 for data collection station 3 simultaneously, and provide the power guarantee through solar panel group 7, and data transmission module 4 gives total accuse indoor with monitoring data long-range transmission, along with the growth of monitoring trees, when trees trunk cross-section diameter widen, extrusion force sensor 22 can transmit monitoring data for data transmission module 4, external controller can driving motor 19 operation afterwards, through main conical gear 20, vice conical gear 21, two-way outer screw 17, gag lever post 18 and the cooperation setting of lift tensioning piece 11, adjust trunk outlying main elasticity stay cord 9 elasticity.
Example 2
Referring to fig. 8, an acceleration-based standing tree swing index can be established, which is used to simulate a standing tree growth trajectory and extract a standing tree key phenological period, and the growth curve fitting formula is:
d (t) represents the growth track of the standing tree in the growth period, t is an acceleration observation time stamp, a1Is the dominant period in winter, a2Is the difference between the prevailing periods in summer and winter, a3And a4Controlling the shape of the spring growth curve (indicating the spring phenology), a5And a6Controlling the shape of the growth curve in autumn (indicating the climate in autumn), a7Is the slope of the curve controlling summer growth (indicating the rate of reversion growth of the standing tree).
The swing index for long sequences can be modified by the following parameters:
1. the height of the equipment binding position from the ground;
2. wind speed;
3. breast diameter length, which is the circumference of the periphery of a detection point on a tree.
The accelerometer 2 detects movement by measuring three-dimensional acceleration, and when attached to a stumpage, can detect movement caused by wind or other forces, and when forced by wind, the detected stumpage will vibrate at a particular frequency, and the formula is:
of living standing treesThe resonance frequency, when viewed simply as a damped mass spring, is inversely related to its magnitude, where ^ j ^0Is the primary resonance frequency, T0K is the corresponding period, k is the stiffness, m is the mass, b simulates the effect of damping, the above formula shows that the change in mass will directly affect the resonance period of the tree, in the context of the phenology, the overground mass of the standing tree increases when the leaves appear, leading to an increase in the resonance period, and vice versa in the case of defoliation, since the dominant resonant period/frequency can be estimated from an acceleration signal, a phenological signal can be derived from the accelerometer data, the present invention has no live stumpage actual mass to record phenological, but adopts the relative percentage change of the mass to simulate a dominant period of the growth change of the standing tree, the dominant period is taken as proxy measurement and is in direct proportion to the percentage change of the standing tree mass, changes in this preponderant phase should be associated with climatic changes such as leaf abscission, leaf abscission and other large-scale effects on tree quality.
Establishing a growth curve equation by using acceleration data, and solving through parameters to obtain key phenological parameters in the later growth stage, such as a spring green-turning time point, an autumn fading time point and a summer growth peak time point of the plant; the data has high frequency characteristics, and the growth rhythm of the standing trees can be continuously monitored.
In summary, compared with the prior art, in the embodiments 1 and 2, when the material and condition monitoring is performed on the trunk of the standing tree, an operator firstly sleeves the left end of the main elastic pulling rope 9 on the main hanging ring 8 at the left side of the monitoring shell 1, sleeves the trunk to be monitored through the main elastic pulling rope 9, sleeves the free end of the main elastic pulling rope 9 on the main hanging ring 8 at the right end of the monitoring shell 1, simultaneously connects the auxiliary elastic pulling rope 10 on the sleeved end of the main elastic pulling rope 9, and then rotates through the meshing of the main bevel gear 20 and the auxiliary bevel gear 21, so that the bidirectional outer screw rod 17 rotates through the inner screw hole 15 on the lifting tensioning block 11, and the lifting tensioning block 11 performs lifting motion, so that the main elastic pulling rope 9 is clamped and fixed on the trunk to be detected under the action of the damping plate 12; electrically connecting an accelerometer 2, an anemometer 6, an output end of a laser range finder 101 and an extrusion force sensor 22 with the data collector 3, connecting a control end of a motor 19 with an external controller of the data collector 3, linking an external data transmission channel through a data transmission module 4, connecting a power supply end of the electrical equipment with a solar panel group 7, and backing up, recording and uploading data obtained by the monitoring elements through the data collector 3 to set the data as initial values;
the accelerometer 2 and the anemometer 6 transmit the horizontal swing acceleration and wind speed data generated when the monitored trunk is subjected to external wind to the data collector 3, the anemometer 6 can be combined with the trunk rigidity characteristic to correct the measurement data of the accelerometer 2, meanwhile, the laser range finder 101 transmits the height of the monitoring shell 1 to the data collector 3, and provides power supply guarantee through the solar panel group 7, the data transmission module 4 remotely transmits the monitoring data to the master control room, along with the growth of the monitored tree, when the diameter of the section of the trunk of the tree becomes wider, the extrusion force sensor 22 transmits the monitoring data to the data transmission module 4, then the external controller drives the motor 19 to operate, and the tightness of the main elastic pull rope 9 at the periphery of the trunk is adjusted through the matching arrangement of the main conical gear 20, the auxiliary conical gear 21, the bidirectional outer screw 17, the limiting rod 18 and the lifting and the tensioning block 11, the monitoring shell 1 can be adaptively fixed, the monitoring device has low use cost, can monitor the climate events such as the green turning, the withering and the like of the arbor, is convenient to use on a plurality of standing trees, and can realize the adaptive fixation of the arbor by utilizing the growth curve equation established by the acceleration data,
obtaining key phenological parameters in the later growth period through parameter solution, such as a plant spring green-turning time point, an autumn fading time point and a summer growth peak time point; the data has high frequency characteristics, and the growth rhythm of the standing trees can be continuously monitored.
And directly set up monitoring devices on the trunk, change the monitoring mode of single trunk standing tree phenology, need not to move the monitoring element on the monitoring shell 1, be convenient for unified regulation, operation.
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 (7)
1. The utility model provides a standing tree phenological monitoring devices of activity based on trunk swing acceleration, includes monitoring shell (1), its characterized in that: be provided with accelerometer (2), data collection station (3), laser range finder (101) and data transmission module (4) on monitoring shell (1) respectively, and all be provided with mounting bracket (5), both sides on monitoring shell (1) both sides wall be provided with anemograph (6) and solar panel group (7) on mounting bracket (5) respectively, it is provided with main string circle (8) all to symmetry on monitoring shell (1) both sides wall, and both sides are relative the cover is equipped with main elasticity stay cord (9) and vice elasticity stay cord (10) in proper order between main string circle (8), monitoring shell (1) both ends are provided with lift tensioning piece (11), are provided with lifting unit between monitoring shell (1) and lift tensioning piece (11), and both sides vice elasticity stay cord (10) free end sets up respectively lift tensioning piece (11) both sides.
2. The trunk oscillating acceleration-based standing tree phenological monitoring device as claimed in claim 1, wherein: accelerometer (2) can measure horizontal acceleration, accelerometer (2), anemograph (6) and laser range finder (101) output with data collection station (3) electric connection, laser range finder (101) set up monitoring shell (1) bottom, and data transmission module (4) can be any one in bluetooth, WIFI, 4/5G, solar panel group (7) comprises solar panel, battery, solar controller and dc-to-ac converter.
3. The trunk oscillating acceleration-based standing tree phenological monitoring device as claimed in claim 1, wherein: the input end and the output end of the data transmission module (4) are connected with the data acquisition unit (3), and the solar panel group (7) provides power supply guarantee.
4. The trunk oscillating acceleration-based standing tree phenological monitoring device as claimed in claim 1, wherein: the main elastic pull rope (9) is sleeved on the trunk, a damping plate block (12) is arranged on the inner surface of the main elastic pull rope (9), and the inner surface of the damping plate block (12) is of a tooth mouth type structure and is connected with the outer surface of the trunk in a contact mode.
5. The trunk oscillating acceleration-based standing tree phenological monitoring device as claimed in claim 1, wherein: the lifting component comprises auxiliary hanging rings (13) arranged at two sides of the lifting tensioning block (11), the free end of the auxiliary elastic pull rope (10) is fixedly sleeved on the auxiliary hanging ring (13), bearing hole plates (14) are arranged at the two ends of the back of the monitoring shell (1), an inner screw hole (15) and a limiting hole (16) are respectively arranged on the lifting tensioning block (11), the thread directions of the inner screw holes (15) on the lifting tensioning blocks (11) at the two ends are opposite, the two-way outer screw rods (17) penetrate through the inner screw holes (15) on the lifting tensioning blocks (11) at the two ends, the two-way outer screw rods (17) penetrate through the inner ring of the bearing pore plate (14) in an interference manner, and both ends of the monitoring shell (1) are provided with limiting rods (18), the limiting rods (18) penetrate through the corresponding limiting holes (16), and the limiting holes (16) and the bidirectional outer screw rods (17) are arranged in parallel.
6. The trunk oscillating acceleration-based standing tree phenological monitoring device according to claim 5, characterized in that: monitoring shell (1) is provided with motor (19) at the back, and motor (19) output shaft pot head is equipped with main bevel gear (20), two-way outer screw (17) middle part position cover be equipped with vice bevel gear (21) and with main bevel gear (20) meshing is connected, one end bearing orifice plate (14) outer end is provided with extrusion force sensor (22), extrusion force sensor (22) output, power end respectively with data collection station (3) and solar panel group (7) are connected.
7. Use method of the standing tree phenological monitoring device based on trunk oscillation acceleration according to claims 1 to 6, characterized in that: the method specifically comprises the following steps:
s1, installing a monitoring device: one end of a main elastic pull rope (9) is sleeved on a main hanging ring (8) on one side of a monitoring shell (1), a trunk to be monitored is sleeved through the main elastic pull rope (9), the free end of the main elastic pull rope (9) is sleeved on the main hanging ring (8) on the other end of the monitoring shell (1), an auxiliary elastic pull rope (10) is connected to the sleeved end of the main elastic pull rope (9), then a main conical gear (20) and an auxiliary conical gear (21) are meshed and rotated, so that an inner threaded hole (15) of a bidirectional outer screw rod (17) on a lifting tensioning block (11) rotates, the lifting tensioning block (11) performs lifting motion, and the main elastic pull rope (9) is clamped and fixed on the trunk to be monitored under the action of a damping plate block (12);
s2, debugging the monitoring device: electrically connecting an accelerometer (2), an anemometer (6), an output end of a laser range finder (101) and an extrusion force sensor (22) with the data acquisition unit (3), connecting a control end of a motor (19) with an external controller of the data acquisition unit (3), linking an external data transmission channel through a data transmission module (4), connecting a power supply end of the electrical equipment with a solar panel set (7), and backing up, recording and uploading data obtained by the monitoring element through the data acquisition unit (3) to be set as initial values;
s3, using the monitoring device: the accelerometer (2) and the anemometer (6) transmit horizontal swing acceleration and wind speed data generated when the monitored trunk is subjected to external wind power to the data acquisition unit (3), meanwhile, the laser range finder (101) transmits the height of the monitoring shell (1) to the data acquisition unit (3), and a solar panel group (7) provides power supply guarantee, the data transmission module (4) remotely transmits the monitoring data to the master control room, along with the growth of the monitored tree, when the diameter of the section of the trunk of the tree becomes wider, the extrusion force sensor (22) transmits the monitoring data to the data transmission module (4), then the external controller drives the motor (19) to operate, and the tightness of the main elastic pull rope (9) on the periphery of the trunk is adjusted through the matching arrangement of the main conical gear (20), the auxiliary conical gear (21), the two-way outer screw (17), the limiting rod (18) and the lifting pull block (11), establishing a live stumpage swing index based on acceleration, simulating a live stumpage growth track by using the index, and extracting a key phenological period of the live stumpage, wherein a growth curve fitting formula is as follows:
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