CN109405769A - Vegetation canopy leaf area index measuring device - Google Patents
Vegetation canopy leaf area index measuring device Download PDFInfo
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- CN109405769A CN109405769A CN201811507102.7A CN201811507102A CN109405769A CN 109405769 A CN109405769 A CN 109405769A CN 201811507102 A CN201811507102 A CN 201811507102A CN 109405769 A CN109405769 A CN 109405769A
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- 238000005259 measurement Methods 0.000 claims abstract description 82
- 230000005855 radiation Effects 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000007774 longterm Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 241001424688 Enceliopsis Species 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012625 in-situ measurement Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011155 quantitative monitoring Methods 0.000 description 1
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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
- G01B11/28—Measuring arrangements characterised by the use of optical techniques for measuring areas
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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
- G01B11/28—Measuring arrangements characterised by the use of optical techniques for measuring areas
- G01B11/285—Measuring arrangements characterised by the use of optical techniques for measuring areas using photoelectric detection means
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Abstract
The present invention provides a kind of Vegetation canopy leaf area index measuring devices, are related to the technical field of Vegetation canopy parameter measurement.Vegetation canopy leaf area index measuring device provided by the invention includes: measurement bracket, the first light intensity sensor and the second light intensity sensor；First light intensity sensor is installed on the top of measurement bracket, for acquiring the solar radiation intensity at the top of Vegetation canopy；Second light intensity sensor is set to the bottom of measurement bracket, for acquiring sunlight through the radiation intensity after Vegetation canopy.Cross Vegetation canopy leaf area index measuring device provided by the invention, alleviate during being measured in the prior art to Vegetation canopy leaf area index, existing measurement efficiency is lower, measurement result vulnerable to interference the technical issues of.
Description
Technical field
The present invention relates to the technical fields of Vegetation canopy parameter measurement, more particularly, to a kind of Vegetation canopy leaf area index
Measuring device.
Background technique
The Vegetation canopies parameter such as trees, meadow and crops is that photosynthesis of plant spy is evaluated in the fields such as forestry and agronomy
The major parameter of sign is of great significance in scientific research and production practices.In general, vane space distribution, zenith angle and
Solar elevation is the important parameter of canopy analysis.Vane space distribution by calculating conglomeration index obtains, and then can reduce from
Calculating error of the effective leaf area index to practical leaf area index；Zenith angle refers to the angle of incident ray and normal, usual feelings
Under condition, the zenith angle perpendicular to mirror surface light is 0 °；Solar elevation refers to the angle of sunray Yu surface water plane, when high noon
It is 90 °.
In order to carry out Quantitative Monitoring and assessment to grassland vegetation upgrowth situation, need to measure accurately to obtain meadow hat
Layer leaf area index index.Currently, measurement method can be generally divided into the direct method of measurement and indirect method of measurement two major classes.
(1) direct method of measurement: mainly there is harvesting destructive measurement and in the way of scanner craft in-situ measurement etc..The party
The advantages of method, is that measurement result is more accurate, but the disadvantage is that measurement process is time-consuming and laborious, and measurement process has vegetation and destroys
Property, it is difficult to meet the measurement demand of large scale, long-term sequence.
(2) indirect measurement method: being based on optical principle, is theoretical base with Beer-Lambert (one Bill of lambert) law
Plinth, attenuation law of the quantitative description incident light in Vegetation canopy, and calculated by obtaining the light energy that Vegetation canopy is intercepted and captured
Leaf area index.The advantages of inverting Vegetation canopy leaf area index indirect using parameters such as this method acquisition canopy clearance rates is letter
Folk prescription just, rapidly and efficiently, improves the acquisition efficiency of leaf area index parameter to a certain extent.But in face of big region,
When the grassland vegetation canopy leaf area index measurement of long-term sequence, there is also following items disadvantages:
1) space-time representativeness is affected by factors such as sample size and weather conditions.It needs to design a fitting before measurement
The sampling plan of reason selects the suitable time, carries out point-to-point measurement to field by artificial.
2) it manually takes when the instrument is measured, is not only limited by meadow turf height, but also by these instruments to measuring condition
With the restriction of environment.Measurement accuracy and representativeness are often affected by artificial subjective factor.For example, to meet apparatus measures
Condition requirement, artificial subjective selection meadow upgrowth situation is good, and the higher sample prescription of turf height measures；
3) when meadow is more sparse short, the indirect measuring instrument of conventional hand can not continuously and effectively obtain Vegetation canopy
The key parameters such as clearance rate seriously affect and reduce the calculated result and precision of meadow canopy leaf area index.
In conclusion there are measurement efficiencies during measuring in the prior art to Vegetation canopy leaf area index
It is lower, measurement result vulnerable to interference the technical issues of.
The information disclosed in the background technology section is intended only to deepen understanding of the general background technology to the present invention, and
It is not construed as recognizing or implying in any form that the information constitutes the prior art known to those skilled in the art.
Summary of the invention
The purpose of the present invention is to provide a kind of Vegetation canopy leaf area index measuring devices, right in the prior art to alleviate
During Vegetation canopy leaf area index measures, existing measurement efficiency is lower, and measurement result is vulnerable to interference
Technical problem.
Vegetation canopy leaf area index measuring device provided by the invention includes: measurement bracket, the first light intensity sensor
With the second light intensity sensor；
First light intensity sensor is installed on the top of measurement bracket, strong for acquiring solar irradiation at the top of Vegetation canopy
Degree；
Second light intensity sensor is set to the bottom of measurement bracket, for acquiring sunlight through the radiation after Vegetation canopy
Intensity.
Further, measurement bracket includes vertical bar and horizontal arm, and one end of horizontal arm is connected to vertical bar；First light intensity
Degree sensor is installed on the top surface of horizontal arm.
Further, measurement bracket includes disc-shaped foot, and the bottom end of vertical bar is removably attachable to disc-shaped foot.
Further, the bottom outer wall of vertical bar is provided with elastic bumps；Disc-shaped foot is provided with the bottom with vertical bar
The connecting hole of cooperation；Vertical bar protrudes into connecting hole, and elastic bumps are abutted with the side wall of connecting hole.
Further, the inner wall of connecting hole is provided with anticreep groove；When vertical bar is protruded into connecting hole, elastic bumps clamping
In anticreep groove.
Further, vertical bar includes bottom bar, mandril and locking member, and bottom bar is provided with the sliding groove with mandril cooperation, sliding
Dynamic slot extends along the length direction of bottom bar；
Mandril protrudes into sliding groove, can slide relative to bottom bar；Locking member, for locking mandril and bottom bar.
Further, balance regulator is installed, horizontal arm is by balance regulator and vertically at the top of vertical bar
Bar connection；Balance regulator, for adjusting the balance of horizontal arm.
Further, balance regulator includes adjustment seat and 3 driver plate top pillars, and adjustment seat is installed on the top of vertical bar
Portion；3 driver plate top pillars are abutted with horizontal arm respectively, and it is flexible to be respectively relative to adjustment seat.
Further, Vegetation canopy leaf area index measuring device provided by the invention includes data acquisition controller, the
One light intensity sensor and the second light intensity sensor are connect with data acquisition controller.
Further, Vegetation canopy leaf area index measuring device provided by the invention include battery, photovoltaic controller and
Solar powered plate, solar powered plate are connect by photovoltaic controller with battery；First light intensity sensor, the second luminous intensity
Sensor and data acquisition controller are connect with battery.
Vegetation canopy leaf area index measuring device provided by the invention is related to the technology neck of Vegetation canopy parameter measurement
Domain.Vegetation canopy leaf area index measuring device provided by the invention includes: measurement bracket, the first light intensity sensor and second
Light intensity sensor；First light intensity sensor is installed on the top of measurement bracket, for acquiring the sunlight at the top of Vegetation canopy
Radiation intensity；Second light intensity sensor is set to the bottom of measurement bracket, for acquiring sunlight through the spoke after Vegetation canopy
Penetrate intensity.Meadow canopy leaf area index is measured using device provided by the invention, and measurement bracket is fixed to region to be measured,
Measurement bracket extends to top below canopy, so that the first light intensity sensor be made to be located at the top of canopy, the second light intensity
Degree sensor is located at the lower section of canopy.First light intensity sensor measures the solar radiation intensity value at the top of canopy, the second light intensity
Degree sensor measures the solar radiation intensity value of canopy bottom, and then available canopy clearance rate value；It is repeatedly surveyed in one day
Amount, available canopy leaf area index.
First light intensity sensor and the second light intensity sensor are respectively provided to canopy by device provided by the invention
Top and bottom are realized and the solar radiation intensity at the top and bottom of canopy are carried out while being measured in synchronization, to obtain
The accurate canopy clearance rate value at the measurement moment.
After device provided by the invention is installed to region to be measured by operator, the multiple survey of long-term sequence can be carried out
Amount, eliminates the repeated multiple times region to be measured in vegetation of operator and carries out installation operation.In this way, on the one hand reducing operator
The workload of member, improves measurement efficiency.On the other hand, reduce and carry out repeatedly installing to operate causing vegetation in region to be measured
Destruction and influence be conducive to the precision for improving measurement result to reduce interference of the manual operation to measurement result.
In conclusion the Vegetation canopy leaf area index measuring device provided through the invention, alleviates in the prior art
During measuring to Vegetation canopy leaf area index, existing measurement efficiency is lower, and measurement result is vulnerable to interference
The technical issues of.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, present pre-ferred embodiments are cited below particularly,
And cooperate appended attached drawing, it is described below in detail.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of Vegetation canopy leaf area index measuring device provided in an embodiment of the present invention；
Fig. 2 is the structural representation of the vertical bar in Vegetation canopy leaf area index measuring device provided in an embodiment of the present invention
Figure；
Fig. 3 is the data acquisition controller in Vegetation canopy leaf area index measuring device provided in an embodiment of the present invention
Structural schematic diagram；
Fig. 4 is the structure of the photovoltaic controller in Vegetation canopy leaf area index measuring device provided in an embodiment of the present invention
Schematic diagram.
Icon: the first light intensity sensor of 011-；The second light intensity sensor of 012-；02- horizontal arm；03- vertical bar；
031- bottom bar；032- mandril；033- locking member；04- data acquisition controller；041- data-interface；051- photovoltaic controller；
The solar powered plate of 052-；061- elastic bumps；062- spring；071- circular cylinder；072- driver plate top pillar；The vertical bubble of 08-；
09- disc-shaped foot.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Vegetation canopy leaf area index measuring device provided in an embodiment of the present invention includes: measurement bracket, the first luminous intensity
Sensor 011 and the second light intensity sensor 012；First light intensity sensor 011 is installed on the top of measurement bracket, for adopting
Collect the solar radiation intensity at the top of Vegetation canopy；Second light intensity sensor 012 is set to the bottom of measurement bracket, for acquiring
Sunlight penetrates the radiation intensity after Vegetation canopy.
Specifically, meadow canopy leaf area index is measured using device provided in an embodiment of the present invention, will measure bracket
It fixed to region to be measured, measures bracket and extends to top below canopy, so that the first light intensity sensor 011 be made to be located at hat
The top of layer, the second light intensity sensor 012 are located at the lower section of canopy.First light intensity sensor 011 measures at the top of canopy
Solar radiation intensity value, the second light intensity sensor 012 measure the solar radiation intensity value of canopy bottom, and then available hat
Lamellar spacing rate value；It is repeatedly measured in one day, available canopy leaf area index.
Device provided in an embodiment of the present invention distinguishes the first light intensity sensor 011 and the second light intensity sensor 012
Top and bottom to canopy are set, realizes and the solar radiation intensity at the top and bottom of canopy is carried out while being surveyed in synchronization
Amount, to obtain the accurate canopy clearance rate value at measurement moment.
After device provided in an embodiment of the present invention is installed to region to be measured by operator, the more of long-term sequence can be carried out
Secondary measurement eliminates the repeated multiple times region to be measured in vegetation of operator and carries out installation operation.In this way, on the one hand reducing behaviour
The workload for making personnel, improves measurement efficiency.On the other hand, reduce and carry out repeatedly installation operation to vegetation in region to be measured
Caused by destroy and influence, to reduce interference of the manual operation to measurement result, be conducive to the precision for improving measurement result.
It is measured under clear sky state, when zenith angle is θ, the first light intensity sensor 011 measures day at the top of canopy
Solar radiation intensity value Q when apex angle is θ0, the second light intensity sensor 012 measure zenith angle be θ when canopy bottom sunlight
Radiation intensity value Q1, canopy clearance rate when zenith angle is θ can be calculated by formula one,
In formula one, P (θ) is zenith angle canopy clearance rate when being θ.
Zenith angle indicates that sunray in the angle of measured zone, is determined by the position of measured zone, date and time,
It is changed over time in one day.According to the longitude and latitude of measured zone, the date and time at measurement moment, the available measurement moment
Zenith angle θ；The magnitude range of zenith angle θ is 0- pi/2.
It is taken multiple measurements using device provided in an embodiment of the present invention, obtains the canopy gap under multiple and different zenith angles
Rate, and can be calculated by formula two,
In formula two, LAI is canopy leaf area index.
Implement to measure using device provided in an embodiment of the present invention, is not required to operator's hand-held measuring device and enters vegetation
In, the measurement with long-term sequence is conveniently taken multiple measurements, the frequency of measurement is improved, so that obtained canopy leaf area index
Precision it is higher.Readily available bigger data volume, consequently facilitating operator analyzes, it is biggish to reject wherein error
Measured value, the measurement error for avoiding the artificial subjective factor of weather conditions from introducing.
After device provided in an embodiment of the present invention is installed to region to be measured, the later period is smaller to the operation of device, in this way, with
The growth of vegetation, interfere and fades away caused by vegetation when installing for the first time, so that the result measured more can accurately reflect plant
The actual conditions of quilt.
Further, Fig. 1 and Fig. 3, Vegetation canopy leaf area index measuring device provided in an embodiment of the present invention are please referred to
Including data acquisition controller 04, the first light intensity sensor 011 and the second light intensity sensor 012 are and data acquisition control
Device 04 connects.Data acquisition controller 04 is installed on measurement bracket.
Specifically, the first light intensity sensor 011 and the second light intensity sensor 012 receive illumination respectively, and are converted into
Electric signal, and electric signal is passed into data acquisition controller 04.
Data acquisition controller 04 control the first light intensity sensor 011 and the second light intensity sensor 012 open or
Stop measurement, and the frequency of control measurement.
In some embodiments, the first light intensity sensor 011 and the second light intensity sensor 012 pass through data line respectively
It is attached with data acquisition controller 04.
In some embodiments, measure bracket on be provided with for respectively with the first light intensity sensor 011 and the second light
The data-interface 041 that intensity sensor 012 connects；Two data-interfaces 041 pass through data line and data acquisition controller respectively
04 connection.It is provided with the channel worn for data line on measurement bracket, which extends in the channels, can reduce outdoor rain
The influence of water is conducive to device long-time steady operation provided in an embodiment of the present invention.
In some embodiments, data acquisition controller 04 includes locating module, clock module and memory module.Positioning mould
Block, for recording the longitude and latitude of measured zone；Clock module, for recording the time at measurement moment every time；Memory module is used for
By each measured value of the first light intensity sensor 011 and the second light intensity sensor 012 and it is corresponding measurement the moment when
Between and longitude and latitude data corresponding record get off.
In some embodiments, data acquisition controller 04 further includes communication module, and communication module is used for and external equipment
It is communicated.
In some embodiments, communication module includes GPRS module.
Measurement data is remotely passed to external equipment by communication module by data acquisition controller 04, is convenient for operator
Member is long-range to obtain measurement data, improves the efficiency of measurement；And convenient for backing up in time to measurement data, data is avoided to lose
It loses.
Operator can remotely send instruction to data acquisition controller 04, to the frequency of the unlatching of measurement, stopping and measurement
Rate is remotely controlled.
Vegetation canopy leaf area index measuring device provided in an embodiment of the present invention have quick, convenient and real-time monitoring with
The advantages of assessment.After setting measurement frequency by data acquisition controller 04, test constantly may be implemented.Moreover, being installed
Afterwards, automatic measurement is carried out under unattended state, effectively reduces manual measurement error, and reduces required operator's
Quantity, measurement efficiency are higher.
In some embodiments, the first light intensity sensor 011 and the second light intensity sensor 012 respectively include light-number
Word converter, real-time clock module, serial communication modular, power supply module and Instrument working state indicating module have luminous intensity
Data acquisition, time record and working condition LED display function.
In some embodiments, data acquisition controller 04 includes GPRS communication module, real-time clock module, microprocessor
And data memory module, it is responsible for the communication and control to the first light intensity sensor 011 and the second light intensity sensor 012, tool
There are data communication, micro process operation and data storage function.
In some embodiments, onboard clock calculator in data acquisition controller 04, with the first luminous intensity of calibration
The measured value and time of measuring of sensor 011 and the second light intensity sensor 012.
Further, measurement bracket includes vertical bar 03 and horizontal arm 02, and one end of horizontal arm 02 is connected to vertical bar 03；
First light intensity sensor 011 is installed on the top surface of horizontal arm 02.
Specifically, referring to Fig.1 and 2, data acquisition controller 04 is installed on the side wall of vertical bar 03.Vertical bar 03
Bottom is provided with the data-interface 041 for connecting with the second light intensity sensor 012, and the second light intensity sensor 012 passes through
Data line is connect with the data-interface 041.
The bottom end of vertical bar 03 is fixed on to the ground in region to be measured, the first light intensity sensor 011 is installed on horizontal arm
02.In this way, being received at the top and bottom of canopy respectively convenient for the first light intensity sensor 011 and the second light intensity sensor 012
Sunlight, and reduce interfering with each other between the two.
Further, measurement bracket includes disc-shaped foot 09, and the bottom end of vertical bar 03 is removably attachable to disc-shaped foot
09。
Specifically, disc-shaped foot 09 is placed into region to be measured, vertical bar 03 is connected on disc-shaped foot 09, makes vertical bar
03 position is more firm, and reduction shifts.It is detachable between vertical bar 03 and disc-shaped foot 09, it is removed convenient for single carrying
Fortune, is assembled when facilitating installation.Also, by disc-shaped foot 09, it can avoid vertical bar 03 and be inserted into the ground in region to be measured,
Reduce the interference for implementing measurement to vegetation.
In some embodiments, disc-shaped foot 09 is set as solid disk, steady with the position that raising is mounted on region to be measured
It is qualitative.
Further, the bottom outer wall of vertical bar 03 is provided with elastic bumps 061；Disc-shaped foot 09 is provided with and vertical bar
The connecting hole of 03 bottom cooperation；Vertical bar 03 protrudes into connecting hole, and elastic bumps 061 are abutted with the side wall of connecting hole.
Specifically, referring to figure 2., the bottom of vertical bar 03 is provided with radial through-hole, and two settings of elastic bumps 061 exist
In the through-hole, connecting spring 062 between two elastic bumps 061, spring 062 drives two elastic bumps 061 to extend out to respectively
Outside the side wall of vertical bar 03.When vertical bar 03 being installed in the connecting hole of disc-shaped foot 09, between two elastic bumps 061
Spring 062 is squeezed compression, and two elastic bumps 061 of elastic power drive are abutted with connecting hole, realizes vertical bar 03 and plate-like
It is locked between pedestal 09.
Further, the inner wall of connecting hole is provided with anticreep groove；When vertical bar 03 is protruded into connecting hole, elastic bumps
061 is connected in anticreep groove.
Specifically, when vertical bar 03 being installed in the connecting hole of disc-shaped foot 09, two elastic bumps 061 are in spring
Under 062 elastic power drive, is pushed against with anticreep recess sidewall, make to connect between vertical bar 03 and disc-shaped foot 09 stronger.
Further, vertical bar 03 includes bottom bar 031, mandril 032 and locking member 033, and bottom bar 031 is provided with and mandril
The sliding groove of 032 cooperation, sliding groove extend along the length direction of bottom bar 031；Mandril 032 protrudes into sliding groove, can be the bottom of relative to
Bar 031 slides；Locking member 033, for locking mandril 032 and bottom bar 031.
Specifically, referring to figure 2., length direction of the mandril 032 relative to bottom bar 031 along bottom bar 031 moves, and adjusts vertical
The entire length of bar 03, to adjust the height of horizontal arm 02, convenient for device provided in an embodiment of the present invention and different height
Vegetation is adapted, and can measure to the vegetation of a certain range of arbitrary height, reduce equipment by landform and vegetation etc.
The limitation of factor allows the random unrestricted choice test zone of operator, reduces the interference of personnel's subjective factor, tie measurement
Fruit is more representative.
In some embodiments, locking member 033 includes screw, and screw thread is connected to bottom bar 031, and protrudes into sliding groove
In, it abuts with the outer wall of mandril 032, will be locked between mandril 032 and bottom bar 031.
Further, the top of vertical bar 03 is equipped with balance regulator, horizontal arm 02 by balance regulator with
Vertical bar 03 connects；Balance regulator, for adjusting the balance of horizontal arm 02.
Specifically, the top surface of horizontal arm 02 is set as plane, in order to install the first light intensity sensor 011.By flat
The regulating device that weighs is conducive to the first light intensity sensor to make the top surface of the first light intensity sensor 011 be parallel to horizontal plane
011 receives sunlight, improves the precision of measurement result.
Further, balance regulator includes adjustment seat and 3 driver plate top pillars 072, and adjustment seat is installed on vertical bar 03
Top；3 driver plate top pillars 072 are abutted with horizontal arm 02 respectively, and it is flexible to be respectively relative to adjustment seat.
Specifically, referring to figure 2., adjustment seat includes circular cylinder 071, and the top of circular cylinder 071 is provided with opening；3 are dialled
Disk top pillar 072 is connected to the bottom of circular cylinder 071；Circular cylinder 071 is fixed on mandril 032.The end fixation of horizontal arm 02 is connected to
Connecting cylinder, the length direction of the axis of connecting cylinder perpendicular to horizontal arm 02.Connecting cylinder protrudes into circular cylinder 071, realizes
Horizontal arm 02 is installed on mandril 032.
3 driver plate top pillars 072 are abutted with the end face of connecting cylinder, are independently adjusted the length that each driver plate top pillar 072 stretches out
Degree, to push connecting cylinder to overturn, can be such that the tilt angle of the top surface of horizontal arm 02 is adjusted.
In some embodiments, driver plate top pillar 072 is bolt, and bolt thread is connected to the bottom wall of circular cylinder 071, and rotation is dialled
Disk top pillar 072, so that driver plate top pillar 072 is flexible relative to circular cylinder 071.
In some embodiments, vertical bubble 08 is provided in vertical bar 03, in order to adjust vertical bar 03 along vertical side
To.
Further, Vegetation canopy leaf area index measuring device provided in an embodiment of the present invention includes battery, photovoltaic control
Device 051 and solar powered plate 052 processed, solar powered plate 052 are connect by photovoltaic controller 051 with battery；First light intensity
Degree sensor 011, the second light intensity sensor 012 and data acquisition controller 04 are connect with battery.
Specifically, Fig. 1 and Fig. 4 are please referred to, device provided in an embodiment of the present invention is set to region to be measured, solar energy supplies
Battery plate 052 receives sunlight, produces electricl energy, and passes through photovoltaic controller 051, and electric energy is stored in battery, to be the first light
Intensity sensor 011, the second light intensity sensor 012 and 04 long-term stable work of data acquisition controller provide electric energy.
It is persistently produced electricl energy outdoors by photovoltaic controller 051 and solar powered plate 052, extends implementation of the present invention
The cruise duration for the device that example provides reduces manual operation to vegetation and survey to reduce the operation that operator replaces battery
The interference of amount enables device provided in an embodiment of the present invention automatically continuously to measure for a long time, helps to improve measurement accuracy.
Finally, it should be noted that all the embodiments in this specification are described in a progressive manner, each embodiment
What is stressed is all differences from other embodiments, and same and similar part cross-reference is between each embodiment
It can；The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；Although referring to foregoing embodiments pair
The present invention is described in detail, those skilled in the art should understand that: it still can be to foregoing embodiments
Documented technical solution is modified, or equivalent substitution of some or all of the technical features；Do not conflicting
In the case where, the features in the embodiments and the embodiments of the present application can be combined with each other.And these modifications, replacement or group
It closes, the range for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of Vegetation canopy leaf area index measuring device characterized by comprising measurement bracket, the first luminous intensity sensing
Device and the second light intensity sensor；
First light intensity sensor is installed on the top of the measurement bracket, for acquiring the sunlight spoke at the top of Vegetation canopy
Penetrate intensity；
Second light intensity sensor is set to the bottom of the measurement bracket, for acquiring sunlight through after Vegetation canopy
Radiation intensity.
2. Vegetation canopy leaf area index measuring device according to claim 1, which is characterized in that the measurement bracket packet
Vertical bar and horizontal arm are included, one end of the horizontal arm is connected to the vertical bar；
First light intensity sensor is installed on the top surface of the horizontal arm.
3. Vegetation canopy leaf area index measuring device according to claim 2, which is characterized in that the measurement bracket packet
Disc-shaped foot is included, the bottom end of the vertical bar is removably attachable to the disc-shaped foot.
4. Vegetation canopy leaf area index measuring device according to claim 3, which is characterized in that the bottom of the vertical bar
Portion's outer wall is provided with elastic bumps；The disc-shaped foot is provided with the connecting hole with the cooperation of the bottom of the vertical bar；
The vertical bar protrudes into the connecting hole, and the elastic bumps are abutted with the side wall of the connecting hole.
5. Vegetation canopy leaf area index measuring device according to claim 4, which is characterized in that the connecting hole it is interior
Wall is provided with anticreep groove；When the vertical bar is protruded into the connecting hole, the elastic bumps are connected in the anticreep groove
In.
6. Vegetation canopy leaf area index measuring device according to claim 2, which is characterized in that the vertical bar includes
Bottom bar, mandril and locking member, the bottom bar are provided with the sliding groove with mandril cooperation, and the sliding groove is along the bottom bar
Length direction extends；
The mandril protrudes into the sliding groove, can slide relative to the bottom bar；The locking member, for by the mandril and
The bottom bar locking.
7. Vegetation canopy leaf area index measuring device according to claim 2, which is characterized in that the top of the vertical bar
Portion is equipped with balance regulator, and the horizontal arm is connect by the balance regulator with the vertical bar；The balance
Regulating device, for adjusting the balance of the horizontal arm.
8. Vegetation canopy leaf area index measuring device according to claim 7, which is characterized in that the balance adjustment dress
It sets including adjustment seat and 3 driver plate top pillars, adjustment seat is installed on the top of the vertical bar；3 driver plate top pillars respectively with
The horizontal arm abuts, and it is flexible to be respectively relative to the adjustment seat.
9. Vegetation canopy leaf area index measuring device according to claim 1, which is characterized in that the Vegetation canopy leaf
Area index measuring device includes data acquisition controller, first light intensity sensor and second light intensity sensor
It is connect with the data acquisition controller.
10. Vegetation canopy leaf area index measuring device according to claim 9, which is characterized in that the Vegetation canopy
Leaf area index measuring device includes battery, photovoltaic controller and solar powered plate, and the solar powered plate passes through described
Photovoltaic controller is connect with the battery；First light intensity sensor, second light intensity sensor and the data
Acquisition controller is connect with the battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507102.7A CN109405769A (en) | 2018-12-10 | 2018-12-10 | Vegetation canopy leaf area index measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507102.7A CN109405769A (en) | 2018-12-10 | 2018-12-10 | Vegetation canopy leaf area index measuring device |
Publications (1)
| Publication Number | Publication Date |
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| CN109405769A true CN109405769A (en) | 2019-03-01 |
Family
ID=65458278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811507102.7A Pending CN109405769A (en) | 2018-12-10 | 2018-12-10 | Vegetation canopy leaf area index measuring device |
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