CN104198297A - Kinematic analytic system for lodging of crops and method utilizing kinematic analytic system - Google Patents
Kinematic analytic system for lodging of crops and method utilizing kinematic analytic system Download PDFInfo
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- CN104198297A CN104198297A CN201410392465.6A CN201410392465A CN104198297A CN 104198297 A CN104198297 A CN 104198297A CN 201410392465 A CN201410392465 A CN 201410392465A CN 104198297 A CN104198297 A CN 104198297A
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Abstract
The invention relates to a kinematic analytic system for the lodging of crops and a method utilizing the kinematic analytic system. The kinematic analytic system comprises a wind field simulation device, a collection device and a processor, wherein the wind field simulation device is arranged on one side of a to-be-measured crop, the collection device is used for collecting data of the to-be-measured crop, and the processor is used for receiving and processing the data collected by the collection device. According to the kinematic analytic system and the method, a systematized, quantified and standardized external environment simulation device is constructed to collect continuous kinematic data of plants directly relevant with the lodging of the plants, three-dimensional reconstruction and virtual simulation of the dynamic lodging process are built, so that the quality and effects of the agricultural production of lands for growing field crops as well as the evaluation of crop varieties are improved.
Description
Technical field
The present invention relates to agricultural machinery field, particularly, relate to a kind of crops lodging kinematics analysis system and use its method.
Background technology
In China's modern agricultural production, plant lodging has become the key factor that affects agricultural year, stable yields.The field crop that corn, paddy rice, wheat be representative of take occupies very large proportion in China's agricultural production, take corn as example, and the underproduction causing because of lodging every year reaches tons up to a million.Therefore, carry out quantification resistant to lodging, the Standardization Research of staple crops very necessary.Along with Modern Information based, the development of automatic technology means, sensor particularly, the mechanics of materials, computing machine and mechanical automation technology are in the deep application of agriculture field, for traditional crops character parameter obtains, measure with analysis and bring brand-new technological means and utility, by Reality simulation environment construction land for growing field crops natural wind field environment and carry out crops test analysis resistant to lodging, for agricultural production and breed breeding provide in real time Data support accurately, thereby raising high crop yield, rate-maintenance capability, for the fast development that promotes modern agriculture, there is huge facilitation.
It is dissimilar that plant lodging type comprises that root falls, stem falls etc., lodging mode is closely related with the material mechanical performance of lodging position and crop stem, different plant species, different cultivars, varying environment and different cultivating and growing density all can exert an influence to the internal organizational structure of the organs such as crop stem, thereby affect crop organ's properties of material mechanics.From the material mechanical performance angle research crop lodging resistance of the major organs such as stem stalk, it is the effective technological means in this area.Properties of material mechanics based on kinematic method research stem stalk is a kind of comprehensively and effectively mode.
But in Production of Large Fields process, environmental change is unpredictable, large Tanaka, carry out crops research calculating resistant to lodging and analysis has larger difficulty.The current research for mechanical property mainly comprises measurement and the evaluation of the indirect parameters such as stem stalk bending power, stem stalk crushing force, sclerderm puncture force.For the research resistant to lodging of the crop under the state of nature of field, be difficult to constructing system, quantification, standardization external environment condition, can not obtain and the directly related bending that lodges, the stress that bends instantaneous part, strain data, thereby affect quality and the effect of land for growing field crops agricultural production and Crop Varieties.
Summary of the invention
The present invention is directed to above-mentioned situation, a kind of crops lodging kinematics analysis system is provided and uses its method, by constructing system, quantification and standardized external environment condition analogue means, gather the plant continuous kinematics data directly related with lodging, by setting up dynamic process three-dimensional reconstruction and the virtual emulation of lodging process, thereby quality and the effect of land for growing field crops agricultural production and variety of crops evaluation have been improved.
According to an aspect of the present invention, provide a kind of crops lodging kinematics analysis system, it is characterized in that, described system comprises: simulation of wind device, harvester and processor; Described simulation of wind device is arranged on a side for tested crop, and described harvester is for gathering the data of described tested crop, and described processor receives the data that described collection dress gathers, and described data are processed.
Wherein, described simulation of wind device comprises blower fan, pipeline and air-spray outlet, described blower fan is positioned at a side end of described pipeline, described air-spray outlet is arranged at another end of described pipeline, described blower fan to obtaining in pipeline, and blows to described tested crop by the outlet of described air-spray by described air intake.
Wherein, described simulation of wind device also comprises rectifier, and described rectifier is arranged in described pipeline.
Wherein, described system also comprises mobile device, and described simulation of wind device is arranged on described mobile device, and along with described mobile device moves.
Wherein, described harvester comprises signature paster and catches a good shot, described signature paster is arranged on the specific position on the stem stalk of described tested crop, described in catch a good shot and be arranged to the form around described tested crop, for catching the position of described signature paster.
Wherein, described processor and described harvester carry out the transmission of data by wireless mode.
Wherein, described signature paster is lightweight infrared-sensitive reflectorized material paster.
Wherein, described in, catch a good shot as the motion-captured camera lens of near infrared.
According to another aspect of the present invention, provide a kind of method of using said system to carry out crops lodging kinematics analysis, described method comprises:
S1, simulation of wind device blows to tested crop by the wind-force of setting;
S2, is captured in the data of setting described tested crop under wind-force;
S3, processes described data, calculates the corner rate of change of the stem stalk of described tested crop;
S4, according to data and the described corner rate of change measured, utilizes the three-dimensional model of default described tested crop stem to analyze, and the lodging process of described tested crop is carried out to dynamic three-dimensional reconstruction and virtual emulation.
Wherein, bending deformation process and the reseting procedure of the stem stalk that described data comprise described tested crop under the effect of wind-force.
Known by above-described embodiment, crops lodging kinematics analysis system and method for the present invention, comprehensive utilization sensor, the mechanics of materials, motion-captured, the method such as computing machine and mechanical automation and technology, constructing system, quantification, standardization external environment condition analogue means, can be under field conditions, real simulation natural wind field, and in real time, accurately, fast, obtain efficiently crops in bending, the continuous kinematics data of plant in lodging process, from kinematics angle calculation, analyze the properties of material mechanics of crop major organs, and realize dynamic process three-dimensional reconstruction and the virtual emulation of lodging process.For quantification, the standardization evaluation of crop varieties provides new technical method, thereby improve quality and the effect of agricultural production and Crop Varieties.
Accompanying drawing explanation
By reference to accompanying drawing, can more clearly understand the features and advantages of the present invention, accompanying drawing is schematically to should not be construed as the present invention is carried out to any restriction, in the accompanying drawings:
Fig. 1 shows the structural representation of a kind of crops lodging kinematics analysis system of the present invention.
Fig. 2 shows the process flow diagram of a kind of crops lodging Analytical Methods of Kinematics of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention is described in detail.
Fig. 1 shows the structural representation of a kind of crops lodging kinematics analysis system of the present invention.
With reference to Fig. 1, a kind of crops lodging kinematics analysis system of the embodiment of the present invention comprises: simulation of wind device 10, sensor 20 and processor 30.
Simulation of wind device 10 is arranged on a side for described tested crop 40, simulation of wind device 10 comprises blower fan 11, pipeline 12 and air-spray outlet 13, blower fan 11 is positioned at a side end of pipeline 12, air-spray outlet 13 is arranged at another end of pipeline 12, and air-spray outlet is set to towards tested crop 40, blower fan 11 provides the initial velocity of air-flow, by described air intake to obtaining in pipeline, and in pipeline 12, form stable, the uniform air-flow of flow velocity, produce certain pressure simultaneously, and at air-spray, export 13 places and form and to there is the region of necessarily stablizing wind field, thereby make the air-flow and the natural wind that from air-spray outlet, blow out there is similar attribute.
In addition, rectifier can also be installed pipeline 12 is interior, for the air-flow in pipeline 12 is adjusted.
Simulation of wind device 10 also has mobile device, and as guide rail etc., simulation of wind device 10 is arranged on mobile device, can realize the movement in the horizontal direction of simulation of wind device by mobile device.
The specification of air-spray outlet 13 is definite according to the size in tested crop region, as take corn as example, and about 2-2.5m is high for individual plant corn, and laterally 1m is wide, conventionally needs the discharge area of 2m*1m; The plant 1m height such as wheat paddy rice left and right, discharge area that need to about 2m*1m, duct length is relevant to sectional area, and the discharge area of 2m*1m is example, and length at least needs 4m.
Meanwhile, the experiment wind speed that different tested crops require is different, take corn as example, lodging condition wind speed occurs and will reach 25m/s, and wheat rice lodging wind speed need to reach 15m/s.
The power of blower fan 11 and sectional area, wind speed are relevant, and with the discharge area of 2m*1m, 25m/s wind speed is example, need to about 55kw.
Blower fan 11 can use motor or Diesel Driven, meets the condition of land for growing field crops field environment.
Harvester 20 comprises signature paster 21 and catches a good shot 22, and signature paster 21 is arranged on the stem stalk of tested crop 40, and is provided with a plurality of signature pasters 21 on each tested crop 40.
Catching a good shot 22 is located at tested crop around, and 22 operated by rotary motion of catching a good shot are a plurality of, so that can intactly capture all signature pasters 21 when tested crop motion.
Processor 30 is connected with sensor 20, for the data of described harvester collection are processed.
In addition, can use the mode of wireless transmission between harvester 20 and processor 30, to carry out the transmission of data, thereby harvester can be set more easily, and can not affect the transmission of data.
According to another aspect of the present invention, provide a kind of method of using above-mentioned crops lodging process kinematics analysis system to carry out the kinematics analysis of crops lodging process.
Fig. 2 shows the process flow diagram of a kind of crops lodging Analytical Methods of Kinematics of the present invention.
With reference to Fig. 2, the method comprising the steps of:
S1, simulation of wind device blows to tested crop by the wind-force of setting;
When using crops lodging process kinematics analysis system, first system is arranged.
The size of the air-spray outlet of simulation of wind device, the power of blower fan and the sore of pipeline are set according to the kind of tested crop.When corn is measured, about 2-2.5m is high for individual plant corn, and laterally 1m is wide, conventionally needs the discharge area of 2m*1m, and duct length at least needs 4m, and meanwhile, if wind speed setting is 25m/s, the power that blower fan is set is 55kw.
The setting of signature paster is set according to the kind of tested crop equally, on the stem stalk of tested crop and blade, set a plurality of signature points, and signature paster is set on each signature point, and the signature point of setting is for the key position of stem stalk and blade, as the joint on stem stalk and internode etc.
Catch a good shot and specifically arrange according to the area size of tested crop, in field, build motion-captured environment, comprise the motion-captured camera lens of multi-angle installation near infrared, and can arrange as requested a plurality of, to guarantee that tested crop has a fixed gap around, 1m left and right, to reduce the circumstance of occlusion of unique point; Preferably, in the situation that light is darker, implement, to guarantee exercise data acquisition effect.
After default completes, first open simulation of wind device, with the wind-force of setting, blow to tested crop.
S2, is captured in the data of setting described tested crop under wind-force.
While starting to measure, for Different Crop, different cultivars, different plants density, different wind speed is set respectively and carries out environmental simulation, the exercise data of record lodging generating process, it is the movement locus at signature paster place, respectively for stem fall, the different situations such as root falls, joint falls, set up lodging wind speed, the correlation models of lodging time, and draw stress-strain diagram.
, be recorded under natural wind simulating effect meanwhile, reset time and reseting procedure in the flexural deformation motion process of stem stalk, stem stalk reset time is one of crop lodging resistance measurement index.
S3, processes described data, calculates the corner rate of change of the stem stalk of described tested crop.
Lodging exercise data is processed, comprise denoising and reparation, obtain the kinematics data that plant lodging process is complete, then calculate the relation of crop stem distortion and wind speed, wind-force, the two sections of internodes of adjacent 3 formations of take are example, and two vectors of formation can form an angle theta in BENDING PROCESS, stem stalk occurs bending and deformation, its corner becomes θ ' from θ, so the computing formula of corner rate of change ω can be write as
Δθ＝θ′-θ,
Corner is changed as the index of weighing stem stalk degree of crook and bending strength.
S4, according to data and the described corner rate of change measured, utilizes the three-dimensional model of default described tested crop stem to analyze, and the lodging process of described tested crop is carried out to dynamic three-dimensional reconstruction and virtual emulation.
In the present embodiment, by the tested crop pattern structural parameters internode of measuring in advance, grow, save the parameters such as radius, internode radius, set up the three-dimensional model of crop plant, three-dimensional model is carried out to finite element division, by each node kinematics data of measuring, give three-dimensional plant model, based on kinematics data, realize dynamic three-dimensional reconstruction and the virtual emulation of plant lodging process.
In addition, for Different Crop, different cultivars, different densities, carry out field test, and the quantizating index of evaluating analysis result as crops lodging resistance, for cultivar identification and breed breeding provide quantification reference, and form the normal process that under field conditions, crop lodging resistance is measured, thereby reach the object that promotes modern agricultural production efficiency and quality.
Known by above-described embodiment, crops lodging kinematics analysis system and method for the present invention, comprehensive utilization sensor, the mechanics of materials, motion-captured, the method such as computing machine and mechanical automation and technology, constructing system, quantification, standardization external environment condition analogue means, can be under field conditions, real simulation natural wind field, and in real time, accurately, fast, obtain efficiently crops in bending, the continuous kinematics data of plant in lodging process, from kinematics angle calculation, analyze the properties of material mechanics of crop major organs, and realize dynamic process three-dimensional reconstruction and the virtual emulation of lodging process.For quantification, the standardization evaluation of crop varieties provides new technical method, thereby improve quality and the effect of agricultural production and Crop Varieties.
Although described by reference to the accompanying drawings embodiments of the present invention, but those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, such modification and modification all fall into by within claims limited range.
Claims (9)
1. a crops lodging kinematics analysis system, is characterized in that, described system comprises: simulation of wind device, harvester and processor; Described simulation of wind device is arranged on a side for tested crop, and described harvester is for gathering the data of described tested crop, and described processor receives the data that described collection dress gathers, and described data are processed;
Wherein, described harvester comprises signature paster and catches a good shot, described signature paster is arranged on the specific position on the stem stalk of described tested crop, described in catch a good shot and be arranged to the form around described tested crop, for catching the position of described signature paster.
2. a kind of crops lodging kinematics analysis system according to claim 1, it is characterized in that, described simulation of wind device comprises blower fan, pipeline and air-spray outlet, described blower fan is positioned at a side end of described pipeline, described air-spray outlet is arranged at another end of described pipeline, described blower fan to obtaining in pipeline, and blows to described tested crop by the outlet of described air-spray by described air intake.
3. a kind of crops according to claim 2 test macro resistant to lodging, is characterized in that, described simulation of wind device also comprises rectifier, and described rectifier is arranged in described pipeline.
4. a kind of crops lodging kinematics analysis system according to claim 1, is characterized in that, described system also comprises mobile device, and described simulation of wind device is arranged on described mobile device, and along with described mobile device moves.
5. a kind of crops lodging kinematics analysis system according to claim 1, is characterized in that, described processor and described harvester carry out the transmission of data by wireless mode.
6. a kind of crops lodging kinematics analysis system according to claim 1, is characterized in that, described signature paster is lightweight infrared-sensitive reflectorized material paster.
7. a kind of crops lodging kinematics analysis system according to claim 1, is characterized in that, described in catch a good shot as the motion-captured camera lens of near infrared.
8. right to use requires the system of any one of 1-7 to carry out a method for crops lodging kinematics analysis, it is characterized in that, described method comprises:
S1, simulation of wind device blows to tested crop by the wind-force of setting;
S2, is captured in the data of setting described tested crop under wind-force;
S3, processes described data, calculates the corner rate of change of the stem stalk of described tested crop;
S4, according to data and the described corner rate of change measured, utilizes the three-dimensional model of default described tested crop stem to analyze, and the lodging process of described tested crop is carried out to dynamic three-dimensional reconstruction and virtual emulation.
9. crops according to claim 8 lodging Analytical Methods of Kinematics, is characterized in that, bending deformation process and the reseting procedure of the stem stalk that described data comprise described tested crop under the effect of wind-force.
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