CN102680084B - Light distribution measuring device and method for crop canopy - Google Patents
Light distribution measuring device and method for crop canopy Download PDFInfo
- Publication number
- CN102680084B CN102680084B CN2012101251313A CN201210125131A CN102680084B CN 102680084 B CN102680084 B CN 102680084B CN 2012101251313 A CN2012101251313 A CN 2012101251313A CN 201210125131 A CN201210125131 A CN 201210125131A CN 102680084 B CN102680084 B CN 102680084B
- Authority
- CN
- China
- Prior art keywords
- measured
- bearing unit
- load bearing
- optical sensor
- crop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention discloses a light distribution measuring device and a method for crop canopy and relates to the technical field of light distribution measurement. The device comprises a bearing unit, a receiving unit and at least one light sensor, wherein the bearing unit comprises a supporting part and a bearing part which is the same as leaves of a to-be-measured plant in shape; the light sensors are arranged on the bearing part respectively and are connected in series sequentially; and one of the light sensors is connected with the receiving unit. According to the invention, the bearing par of the bearing unit, which is the same as the leaves of the to-be-measured plant in shape, is used for bearing the light sensor, so that the measuring position can be adjusted conveniently, the natural shape of the leaves of the plant is not damaged, and the precision of light distribution measuring is improved.
Description
Technical field
The present invention relates to light distribution measuring technical field, particularly light apparatus for measuring distribution and method in a kind of crop canopies.
Background technology
In plant canopy, the research that is determined as the interior radiation transmission of canopy and the regularity of distribution of radiation profiles is laid a good foundation, and is the main method of checking radiation model.
In recent years, along with the development of modern auto-Detection Technology, the observation instrument of light in multiple special crop canopies has appearred.As: LI-190SA point type and LI-191SA line formula photosynthetically active radiation light quantum analyzer that LI-COR company produces; The SunScan Canopy Analyzer that the Delta-T instrument company of Britain produces; The AccuPAR Canopy Analyzer of U.S. Decagon instrument company, main body are 80 PAR probes that are uniform-distribution with on the probe of a 80cm, and, by a small operation terminal, have the ability that marshalling is measured to probe.Aspect the light distribution measuring instrument of development voluntarily, the people such as Karine Chenu have developed Turtle_6 and Turtle_16 measuring instrument in 2008 based on the Turtle modular concept.
These light apparatus for measuring distribution can carry out the light distribution measuring of plant canopy, but mode is different, LI-190SA point type and LI-191SA line formula can distribute and measure the light on specified point and line, the SunScan Canopy Analyzer can provide to the radiation profiles on line the average radiation value, the AccuPAR Canopy Analyzer can obtain the light intensity value of 80 probes on probe, and Turtle_6 and Turtle_16 can measure the scattering light distribution value of specified point preferably.
But the major defect of above-mentioned smooth apparatus for measuring distribution is: the point measurement instrument is more thick and heavy, is difficult to be installed to the plant leaf blade assigned address,, even install, also can cause plant leaf blade loss natural form, to measurement, brings error; The shortcoming of line formula measurement mechanism is that measuring position is difficult to adjust, and can't measure the intensity information of assigned address, and SunScan Canopy Analyzer, AccuPAR Canopy Analyzer also have this defect; Turtle_6 and Turtle_16 measuring instrument can be measured the light distribution information of specified point in crop canopies, but it also can't be attached on plant leaf blade, and can't measure simultaneously the intensity information of a plurality of points; In addition, above various smooth apparatus for measuring distribution all can't be measured the intensity information of a plurality of any specified points simultaneously.
Summary of the invention
The technical matters that (one) will solve
The technical problem to be solved in the present invention is: how to be convenient to adjust measuring position and can not make plant leaf blade loss natural form, to improve the precision of light distribution measuring.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides light apparatus for measuring distribution in a kind of crop canopies, described device comprises: load bearing unit, receiving element and at least one optical sensor, described load bearing unit comprise support section and with the bearing part of crop leaf homomorphosis to be measured, described at least one optical sensor is located at respectively on described bearing part and is connected in series successively, and an optical sensor in described at least one optical sensor is connected with described receiving element.
Preferably, described device also comprises support and sky sensor, the top of described support is positioned at the canopy top of described crop to be measured, and described sky sensor is located at the top of described support, and described sky sensor is connected with an optical sensor in described at least one optical sensor.
Preferably, described optical sensor is provided with optical filter.
Preferably, described load bearing unit is bonding jumper.
The invention also discloses a kind of measuring method based on light apparatus for measuring distribution in described crop canopies, said method comprising the steps of:
S1: utilize the support section on load bearing unit that described load bearing unit is fixed, make on described load bearing unit and contact with crop leaf to be measured with the bearing part of crop leaf homomorphosis to be measured;
S2: at least one optical sensor is located at respectively measured place on described bearing part as required;
S3: the top of sky sensor being located at support;
S4: described receiving element is every carries out signals collecting one time through preset interval time, to realize light distribution measuring in the canopy of crop leaf to be measured.
Preferably, further comprising the steps of before step S1:
S0: choose crop leaf to be measured, according to the form processing load bearing unit of described crop leaf to be measured, to realize bearing part and the crop leaf homomorphosis to be measured on load bearing unit.
Preferably, the optical sensor in step S2 is provided with optical filter;
After carrying out signals collecting in step S4, the signal that gathers is reduced.
(3) beneficial effect
The present invention, by assigning to place optical sensor with the supporting part of crop leaf homomorphosis to be measured on load bearing unit, is convenient to adjust measuring position and can not be made plant leaf blade loss natural form, has improved the precision of light distribution measuring.
Description of drawings
Fig. 1 is the structural representation according to light apparatus for measuring distribution in the crop canopies of an embodiment of the present invention;
Fig. 2 is the schematic diagram of optical filter to the light intensity optical filtering of varying strength.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.
The device of present embodiment comprises: with load bearing unit, receiving element and at least one optical sensor of crop leaf homomorphosis to be measured, described at least one optical sensor is located at respectively on described load bearing unit and is connected with described receiving element respectively.
For avoiding occurring that optical sensor excess of stroke situation occurs, preferably, described optical sensor is provided with optical filter.
For the area that prevents load bearing unit excessive, thereby crop leaf to be measured is blocked, in present embodiment, described load bearing unit is preferably bonding jumper.
The invention also discloses a kind of measuring method based on light apparatus for measuring distribution in described crop canopies, said method comprising the steps of:
S1: will be fixed with the load bearing unit of crop leaf homomorphosis to be measured, described load bearing unit is contacted with crop leaf to be measured;
S2: at least one optical sensor is located at respectively measured place on described load bearing unit as required;
S3: described at least one optical sensor is connected with described receiving element respectively;
S4: described receiving element is every carries out signals collecting one time through preset interval time, to realize light distribution measuring in the canopy of crop leaf to be measured.
Preferably, further comprising the steps of before step S1:
S0: choose crop leaf to be measured, according to the form processing load bearing unit of described crop leaf to be measured, to realize load bearing unit and crop leaf homomorphosis to be measured.
Preferably, the optical sensor in step S2 is provided with optical filter;
After carrying out signals collecting in step S4, the signal that gathers is reduced.
Embodiment
with reference to Fig. 1, in the present embodiment, optical sensor is owing to will being positioned over the plant leaf blade surface, therefore, when guaranteeing measuring accuracy, reducing sensor weight is also emphasis, therefore, sensor adopts the ISL29004 optical sensor, this sensor mass is less, and can guarantee that obtaining data has higher precision, but when large Tanaka measures the light distribution, the situation that the light intensity outrange easily occurs, therefore, add optical filter on sensor, owing to having added optical filter, therefore, need to carry out determining of filter factor to the light intensity of varying strength, thereby carry out the reduction of collection signal, with the correct light intensity value of assurance system output.Through measuring, it is 11.90g that single-sensor adds optical filter weight.
Restriction due to data transmission, every circuit is only allowed 8 sensors, each circuit is furnished with a notebook (being receiving element) record data, adopt the less data line of quality to connect between sensor, data line is furnished with 15cm, 20cm and three length of 30cm, data line weight is that to select in actual applications, wherein, Data Transport Protocol is the I2C bus protocol to 6.09g (data line that 15cm is long);
When crop leaf to be measured is measured, comprise the steps:
According to the light built form of crop leaf to be measured design and built fixed form: at first definite crop leaf Main Morphology that carries out in advance the light distribution measuring, take corn as example, selected premeasuring photodistributed maize leaf on it, measure its vein form with digitizer, selecting the aluminum strip of certain-length (is bonding jumper, its weight is 0.3g/cm) be processed into the vein tracing pattern, the front end of aluminum strip has 10cm vacant, and there is the vacant of about 80cm (specifically according to the distance decision apart from ground of the blade tip of institute's crop leaf to be measured) rear end.The aluminum strip front end inserts the leaf sheath of institute's crop leaf to be measured and binds reinforcing with the space between the stem stalk and with rope, insert in soil rear end, so fixing aluminum strip is consistent with leaf morphology, can place optical sensor above it, as can evenly place a plurality of optical sensors on aluminum strip.
Design measurement environment according to concrete crop growth environment: circuit one end need extend the canopy top of a sky sensor to described crop leaf to be measured, and to measure the light intensity of canopy outside, outside sensor will keep level.The other end of every circuit extends to the canopy outside and is connected to notebook by the data-switching mouth, because experiment needs canopy light is distributed and carries out Continuous Observation, it is interior to prevent that the long-time irradiation of sunshine from causing excess Temperature that notebook need be positioned over chest, and chest needs certain distance be arranged to reduce chest to the photodistributed impact of canopy apart from measurement colony.
With reference to Fig. 2, the reduction of luminous intensity measurement data: the received light intensity of optical sensor is the light intensity after optical filter filters, and, for obtaining the actual light intensity of measuring position, needs to reduce to measuring light intensity.Experiment shows, optical filter filters as linear change to the light intensity of varying strength, determines that therefore the reduction formula is L=6600.0 * Va, and wherein Va is the sensor actual measured value, and L is actual measurement light intensity (unit is lux).
Sensor on this measurement mechanism recorded and stored a secondary data in every 3 seconds, and therefore, this measurement mechanism can carry out continuous detecting to the light intensity of crop canopies assigned address.Measured data can be used for the checking of crop canopies analogy method, also can be used for analyzing the continuous variation of crop designated organ light intensity.
Above embodiment only is used for explanation the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (3)
1. the measuring method of light apparatus for measuring distribution in a crop canopies, the device that is used for measuring comprises: load bearing unit, receiving element and at least one optical sensor, described load bearing unit comprise support section and with the bearing part of crop leaf homomorphosis to be measured, described at least one optical sensor is located at respectively on described bearing part and is connected in series successively, an optical sensor in described at least one optical sensor is connected with described receiving element, it is characterized in that, said method comprising the steps of:
S1: utilize the support section on load bearing unit that described load bearing unit is fixed, make on described load bearing unit and contact with crop leaf to be measured with the bearing part of crop leaf homomorphosis to be measured;
S2: at least one optical sensor is located at respectively measured place on described bearing part as required;
S3: the top of sky sensor being located at support;
S4: described receiving element is every carries out signals collecting one time through preset interval time, to realize light distribution measuring in the canopy of crop leaf to be measured.
2. the method for claim 1, is characterized in that, and is further comprising the steps of before step S1:
S0: choose crop leaf to be measured, according to the form processing load bearing unit of described crop leaf to be measured, to realize bearing part and the crop leaf homomorphosis to be measured on load bearing unit.
3. the method for claim 1, is characterized in that, the optical sensor in step S2 is provided with optical filter;
After carrying out signals collecting in step S4, the signal that gathers is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101251313A CN102680084B (en) | 2012-04-25 | 2012-04-25 | Light distribution measuring device and method for crop canopy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101251313A CN102680084B (en) | 2012-04-25 | 2012-04-25 | Light distribution measuring device and method for crop canopy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102680084A CN102680084A (en) | 2012-09-19 |
| CN102680084B true CN102680084B (en) | 2013-11-20 |
Family
ID=46812356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101251313A Active CN102680084B (en) | 2012-04-25 | 2012-04-25 | Light distribution measuring device and method for crop canopy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102680084B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065055B (en) * | 2013-01-15 | 2015-08-12 | 北京农业信息技术研究中心 | Light distribation computing method in heliogreenhouse |
| CN103106678B (en) * | 2013-01-18 | 2016-01-20 | 北京农业信息技术研究中心 | Crop canopies Light distribation animation synthesizing method |
| CN103557934B (en) * | 2013-10-25 | 2015-06-17 | 北京农业信息技术研究中心 | Device for measuring light distribution in crop canopy |
| CN104568145B (en) * | 2015-01-08 | 2018-02-13 | 中国科学院遥感与数字地球研究所 | A kind of observation system and method for Vegetation canopy photosynthetically active radiation assimilation ratio |
| AU2018256273B2 (en) * | 2017-04-21 | 2023-03-09 | Farmote Limited | Products and processes for measuring the surface profile of a crop or pasture |
| CN110857884A (en) * | 2018-08-23 | 2020-03-03 | 湖北省农业科学院经济作物研究所 | Method and system for determining distribution rule of photosynthetic effective radiation of mulberry canopy |
| CN109724915B (en) * | 2018-11-20 | 2021-06-29 | 北京农业信息技术研究中心 | Crop canopy structure analysis device and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1031344C2 (en) * | 2006-03-10 | 2007-09-11 | Priva B V | Sensors for controlling lighting. |
| CN101900602B (en) * | 2010-06-24 | 2012-01-04 | 北京农业信息技术研究中心 | Calculation method for distribution of scattered light on crop canopy |
| CN102175653B (en) * | 2011-03-18 | 2012-10-10 | 北京师范大学 | Sensor for measuring direct solar radiation transmittance under different vegetation canopies |
-
2012
- 2012-04-25 CN CN2012101251313A patent/CN102680084B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102680084A (en) | 2012-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102680084B (en) | Light distribution measuring device and method for crop canopy | |
| CN105739575A (en) | Greenhouse vegetable environmental parameter data fusion method, data fusion device, and data fusion system | |
| CN103472430B (en) | Solar simulator irradiation nonuniformity and instability test macro | |
| CN103557934B (en) | Device for measuring light distribution in crop canopy | |
| CN116429988B (en) | Dynamic remote sensing monitoring device for ocean plant carbon sink | |
| CN106441983A (en) | Multifunctional soil detection sampling device | |
| CN101702034B (en) | Detection method and detector for underground water source based on earth electromagnetic induction principle | |
| CN203275681U (en) | Meteorological information acquisition apparatus based on GPRS | |
| CN112931167B (en) | Plant irrigation decision system and method | |
| CN102243114A (en) | Multi-point water flow temperature synchronous measurement system for warm drainage model | |
| CN102636717A (en) | Portable three-phase load acquisition recorder for low-pressure multipath outgoing cable | |
| CN106468733A (en) | A kind of monitoring system of extra-high voltage Lightning Incoming Wave and its monitoring method | |
| CN205837196U (en) | A kind of field spatial data acquisition device | |
| CN106322123A (en) | Pipeline leakage detecting method and system as well as sampler and host thereof | |
| CN202548244U (en) | Portable three-phase load acquisition recording device for low-voltage multi-path outgoing cable | |
| CN204241112U (en) | Hatch machine wireless temperature logging | |
| CN207600400U (en) | Tree breast-height diameter device based on laser range sensor | |
| CN204761460U (en) | Multichannel sensor signal transmission network system | |
| CN105882968A (en) | Field spatial data acquisition device | |
| CN113179297A (en) | System and method for collecting and transmitting irrigation data based on Internet of things Bluetooth | |
| CN106679580A (en) | OBR-based prefabricated pile body stress-strain monitoring system and using method | |
| CN106018257A (en) | Soil wind erosion erodibility test system and method | |
| CN208159306U (en) | crop planting information collection system | |
| CN202502254U (en) | Electrical prospecting apparatus | |
| CN205426710U (en) | Rising automatic measurement system of crop |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |