CN103987170B - Based on greenhouse tomato light filling regulate and control method and the system of growth model - Google Patents
Based on greenhouse tomato light filling regulate and control method and the system of growth model Download PDFInfo
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- CN103987170B CN103987170B CN201410210032.4A CN201410210032A CN103987170B CN 103987170 B CN103987170 B CN 103987170B CN 201410210032 A CN201410210032 A CN 201410210032A CN 103987170 B CN103987170 B CN 103987170B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
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Abstract
A kind of greenhouse tomato light filling regulate and control method based on growth model, choose tomato seedling phase, florescence and fruiting period three growth phases, measure the tomato leaf Net Photosynthetic Rate under different temperatures, gas concentration lwevel and intensity of illumination, light saturation point corresponding under obtaining different temperatures, gas concentration lwevel condition, sets up the optimum light saturation point model of tomato; Temperature, gas concentration lwevel and intensity of illumination in Real-Time Monitoring tomato growth environment, according to the current residing growth phase of tomato, the light saturation point of current light intensity whether corresponding to Current Temperatures and gas concentration lwevel is judged in conjunction with the optimum light saturation point model of tomato, if not being, LED light source is then utilized to carry out light filling until reach light saturation point, invention also provides a kind of greenhouse tomato light filling regulator control system based on growth model, achieve tomato intelligence quantitatively light filling as required, energy-conservation to facility tomato, High-efficient Production is significant.
Description
Technical field
The invention belongs to agricultural technology field, particularly a kind of greenhouse tomato light filling regulate and control method based on growth model and system.
Background technology
Current China industrialized agriculture production accounts for 90% of the world, but still there is the defects such as overall scientific and technological content is on the low side, corollary equipment is not enough in developed country relatively, particularly in crop illumination environmental Kuznets Curves, the problem such as there is method for supervising and technology is single, control accuracy is poor, poor expandability, energy consumption are high, deployment maintenance is difficult, but the quality of illumination condition directly affects the yield and quality of crop.
In greenhouse tomato plantation, usually adopt fluorescent lamp, fluorescent lamp etc. as supplementary lighting sources, energy resource consumption is comparatively large, increases the cost of light filling; The mode of illuminance is determined in the many employings of light filling mode, do not consider the combined influence to tomato such as light intensity, temperature, carbon dioxide, the phenomenon that light filling is not enough or light filling is superfluous is caused so existing, even cause Xanthophyll cycle and photo damage phenomenon, and the energy waste caused to a certain extent, cause the waste of the energy further; Many employings single-chip microcomputer in regulator control system aspect regulates and controls, the attainable function of the system that limits, and can operate and extensibility poor.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of greenhouse tomato light filling regulate and control method based on growth model and system, achieving tomato intelligence quantitatively light filling as required, energy-conservation to facility tomato, High-efficient Production is significant.
To achieve these goals, the technical solution used in the present invention is:
Based on a greenhouse tomato light filling regulate and control method for growth model, comprise the steps:
Choose tomato seedling phase, florescence and fruiting period three growth phases, measure the tomato leaf Net Photosynthetic Rate under different temperatures, gas concentration lwevel and intensity of illumination, light saturation point corresponding under obtaining different temperatures, gas concentration lwevel condition, sets up the optimum light saturation point model of tomato;
Temperature, gas concentration lwevel and intensity of illumination in Real-Time Monitoring tomato growth environment, according to the current residing growth phase of tomato, the light saturation point of current light intensity whether corresponding to Current Temperatures and gas concentration lwevel is judged in conjunction with the optimum light saturation point model of tomato, if not, then LED light source is utilized to carry out light filling until reach light saturation point.
When Modling model, choose different tomato varieties, finally set up the optimum light saturation point model of different cultivars, thus realize the accurate light filling of different cultivars.
Utilizing before LED light source carries out light filling, calculating current light intensity and corresponding light saturation point difference obtains needing light filling intensity values, then utilizing pwm signal control mode to control accurate light filling.
Invention also provides a kind of greenhouse tomato light filling regulator control system based on growth model, comprising:
Monitoring modular, is made up of system for detecting temperature, illumination intensity detection system and gas concentration lwevel detection system;
Intelligent dimming control module, comprise database and processor, wherein, the optimum light saturation point model of tomato is stored in described database, described model is by choosing tomato seedling phase, florescence and fruiting period three growth phases, measure the tomato leaf Net Photosynthetic Rate under different temperatures, gas concentration lwevel and intensity of illumination, light saturation point corresponding under obtaining different temperatures, gas concentration lwevel condition, then set up and obtain; Described processor receives the data that monitoring modular sends, then the model in calling data storehouse, root is according to the current residing growth phase of tomato, judge the light saturation point of current light intensity whether corresponding to Current Temperatures and gas concentration lwevel, if not, then send light filling control command to supplementary lighting module;
Supplementary lighting module, adopts array-type LED light source, receives the light filling control command unlatching light filling that intelligent dimming control module sends;
Communication module, adopts 485 bus structures, from monitoring modular to intelligent dimming control module transmission of monitoring data, sends light filling control command from intelligent dimming control module to supplementary lighting module.
Described system for detecting temperature is formed primarily of thermistor, collecting temperature; Illumination intensity detection system gathers intensity of illumination by optical sensor; Gas concentration lwevel detection system is made up of carbon dioxide sensor module, gathers gas concentration lwevel.
The LED light source of described supplementary lighting module is controlled by pwm signal drive circuit, in described intelligent dimming control module, processor calculates current light intensity and corresponding light saturation point difference obtains needing light filling intensity values, and then output multi-channel pwm signal controls to open LED light source and adjusts corresponding bright and realizes quantitatively accurately light filling.
In intelligent dimming control module, be set with time block and threshold data, time block is used for the switching time of control system; Threshold data comprises temperature threshold, intensity of illumination threshold value and gas concentration lwevel threshold value, when Current Temperatures is within the scope of temperature threshold, just monitor current gas concentration lwevel, when current gas concentration lwevel is in gas concentration lwevel threshold range, just monitor current light intensity.
Compared with prior art, the invention has the beneficial effects as follows:
1, the present invention devises a set of greenhouse tomato light filling control system, and this system adopts exploitation PC to hold the mode of software, has highly versatile, high, the easy expansion of stability, the feature such as easy and simple to handle and intelligent compared with control system in the past.
2, the regulation and control algorithm in native system is that the mode by experiment and through data fitting obtains, and has taken into full account tomato variety, tomato growth stage, ambient temperature and CO in algorithm
2concentration is to the shadow of tomato photosynthesis, achieve and carry out intelligent control according to the real-time light requirement of extraneous factor to tomato, overcome regulator control system in the past and determine the shortcoming such as light filling quantity not sufficient and Xanthophyll cycle that light quantity causes, for tomato provides best growing environment, at utmost improve greenhouse tomato output and quality, reduce energy resource consumption, achieve modern management and the precision operation of greenhouse tomato Illumination.
Accompanying drawing explanation
Fig. 1 is present system general frame figure.
Fig. 2 is light filling amount intelligent decision algorithm flow chart of the present invention.
Embodiment
Embodiments of the present invention are described in detail below in conjunction with drawings and Examples.
As shown in Figure 1, the present invention is based on the greenhouse tomato light filling regulator control system of growth model, comprise monitoring modular, intelligent dimming control module, supplementary lighting module and communication module.Monitoring modular is made up of system for detecting temperature, illumination intensity detection system and gas concentration lwevel detection system, enter the monitoring of instantaneous information, communication module adopts 485 bus structures, and the Monitoring Data of monitoring modular transfers to intelligent dimming control module by communication module.Intelligent dimming control module comprises database and processor, after processor receives Monitoring Data, use intelligent dimming algorithm, according to the optimum light saturation point model of the tomato in database, judge whether to need light filling, and when needs light filling, calculate light filling amount accurately, send multi-channel PWM control command, reach supplementary lighting module by 485 buses.Supplementary lighting module adopts array-type LED light source, is controlled by pwm signal drive circuit, and according to the PWM control command that intelligent dimming control module sends, the corresponding bright of adjustment LED light source realizes quantitatively accurately light filling.
Wherein, in a database, its process of establishing is as follows for the optimum light saturation point model storage of tomato:
1, the tomato of different cultivars is chosen, by carrying out nursery cultivation in greenhouse;
2, the tomato of healthy growth is chosen, measure the tomato leaf Net Photosynthetic Rate under its Seedling Stage, florescence and fruiting period three growth phase different temperatures, gas concentration lwevel and intensities of illumination, MATLAB software is used to process experimental data, light saturation point corresponding under obtaining different temperatures, gas concentration lwevel condition, thus the optimum light saturation point model of the tomato of setting up different cultivars.
The specific embodiment that the invention provides model foundation is as follows:
Choose the tomato research object of three kinds of typical long fruit type, rib fruit type and apple shapes, by carrying out nursery cultivation in greenhouse, the tomato choosing healthy growth is tested.Utilize Li-6400xt portable photosynthesis measuring system control temperature, gas concentration lwevel and intensity of illumination, thus the photoresponse curve obtained under different temperatures, gas concentration lwevel, the intensity of illumination gradient of photoresponse curve is set to 0,10,30,50,100,200,300,500,700,1000,1200,1500,2000mmolm
-2s
-1, temperature gradient is set to 16,19,22,25,28,31,34,37,40 DEG C, and gas concentration lwevel gradient is 300,400,500,600,700,800,900,1000,1100,1200,1300,1500 μm of olm
-2s
-1, often group experiment in triplicate.
Test the data acquisition MATLAB software recorded to process.For the experimental data of tomato seedling phase, data handling procedure is described below, other stage conditioning process is identical.
1, experimental data preliminary treatment: carrying out gross error process by testing the initial data recorded, removing irrational experimental data, the data after process being averaged, finally obtains different temperatures, different CO
2photoresponse curve corresponding under concentration
2, light saturation point is calculated: by the different temperatures obtained after preliminary treatment, different CO
2photoresponse curve corresponding under concentration adopts the mode of genetic algorithm maximizing to obtain light saturation point, thus obtains different temperatures, CO
2light saturation point corresponding under concentration.
3, regulation and control algorithm is set up: adopt the mode of Multiple Non-linear Regression Analysis to set up temperature, CO
2the regression equation of concentration and light saturation point, finally sets up with temperature, CO
2concentration is independent variable, and light saturation point is the regulation and control algorithm of dependent variable.
In intelligent dimming algorithm, first based on the temperature of monitoring, intensity of illumination and dense carbon dioxide degrees of data, the light filling amount under varying environment condition is calculated by the optimum light saturation point model of tomato, exported as each road pwm signal, sent to the pwm signal drive circuit of each Nodes supplementary lighting module by 485 buses, complete quantitatively accurately light modulation.
The course of work of the present invention, monitoring modular completes the collection to facilities environment data (temperature, gas concentration lwevel and intensity of illumination), and completed by the communication mode of 232 serial ports-485 port-232 serial ports and information interaction between intelligent dimming control module (can PC be adopted), relevant Decision is completed by processor, assign concerned control command, corresponding regulation and control are made to LED light supplement lamp, thus reaches the object of Intelligent supplemental lighting.
Supplementary lighting module adopts LED light source, utilizes natural daylight LED array light filling.Controlled by pwm signal drive circuit, the arrangement mode that LED group adopts is that square is nested, reaches the object that the light distribution of horizontal and vertical both direction generation is identical.By 232 serial ports and 485 bus couple processor, receive the multi-channel PWM signal that it sends, the brightness of each lamp group is adjusted, reaches even light filling.
Communication module of the present invention realize intermodular data upload with order issue work, by 485 bus structures realize.
Control mode of the present invention is divided into Non-follow control and automatically controls two kinds, and Non-follow control, by selecting the equipment of respective regions and the state (opening or closing) of equipment, directly controls equipment.
When MANUAL CONTROL mode is opened, supplementary lighting module adopts maximum to carry out light filling; When manual mode is closed, open if automatically control, then system enters automatic control mode, and close if automatically control, then light compensating lamp is closed.
Automatic control comprises timing controlled and threshold values controls.Timing controlled was controlled equipment automatically by the switching time setting relevant device, when after arrival setting-up time, equipment state changes thereupon.Threshold values controls automatically to be controlled equipment by set environment factor bound, and when envirment factor a certain in production environment exceeds setting boundary, relevant device is automatically opened or closed adjusting ambient situation, until envirment factor date restoring is normal.Intelligent decision module is passed through the temperature detected in real time, CO
2concentration, light intensity and tomato growth stage carry out Treatment Analysis, call related algorithm, finally carry out decision-making and control to light filling amount, and light filling amount intelligent decision algorithm as shown in Figure 2.
Instance analysis:
Apply this system on the spot, below enumerate the concrete data in tomato seedling phase system regulation process.
Claims (5)
1., based on a greenhouse tomato light filling regulate and control method for growth model, it is characterized in that, comprise the steps:
Choose tomato seedling phase, florescence and fruiting period three growth phases, measure the tomato leaf Net Photosynthetic Rate under different temperatures, gas concentration lwevel and intensity of illumination, light saturation point corresponding under obtaining different temperatures, gas concentration lwevel condition, sets up the optimum light saturation point model of tomato; When Modling model, choose different tomato varieties, finally set up the optimum light saturation point model of different cultivars, thus realize the accurate light filling of different cultivars;
Temperature, gas concentration lwevel and intensity of illumination in Real-Time Monitoring tomato growth environment, according to the current residing growth phase of tomato, the light saturation point of current light intensity whether corresponding to Current Temperatures and gas concentration lwevel is judged in conjunction with the optimum light saturation point model of tomato, if not being, LED light source is then utilized to carry out light filling until reach light saturation point, utilizing before LED light source carries out light filling, calculating current light intensity and corresponding light saturation point difference obtain needing light filling intensity values, then utilize pwm signal control mode to control accurate light filling.
2., based on a greenhouse tomato light filling regulator control system for growth model, it is characterized in that, comprising:
Monitoring modular, is made up of system for detecting temperature, illumination intensity detection system and gas concentration lwevel detection system;
Intelligent dimming control module, comprise database and processor, wherein, the optimum light saturation point model of tomato is stored in described database, described model is by choosing tomato seedling phase, florescence and fruiting period three growth phases, measure the tomato leaf Net Photosynthetic Rate under different temperatures, gas concentration lwevel and intensity of illumination, light saturation point corresponding under obtaining different temperatures, gas concentration lwevel condition, then set up and obtain; Described processor receives the data that monitoring modular sends, then the model in calling data storehouse, root is according to the current residing growth phase of tomato, judge the light saturation point of current light intensity whether corresponding to Current Temperatures and gas concentration lwevel, if not, then send light filling control command to supplementary lighting module; Wherein when setting up tomato optimum light saturation point model, choosing different tomato varieties, finally setting up the optimum light saturation point model of different cultivars;
Supplementary lighting module, adopts array-type LED light source, receives the light filling control command unlatching light filling that intelligent dimming control module sends;
Communication module, adopts 485 bus structures, from monitoring modular to intelligent dimming control module transmission of monitoring data, sends light filling control command from intelligent dimming control module to supplementary lighting module.
3. the greenhouse tomato light filling regulator control system based on growth model according to claim 2, it is characterized in that, described system for detecting temperature is formed primarily of thermistor, collecting temperature; Illumination intensity detection system gathers intensity of illumination by optical sensor; Gas concentration lwevel detection system is made up of carbon dioxide sensor module, gathers gas concentration lwevel.
4. the greenhouse tomato light filling regulator control system based on growth model according to claim 2, it is characterized in that, the LED light source of described supplementary lighting module is controlled by pwm signal drive circuit, in described intelligent dimming control module, processor calculates current light intensity and corresponding light saturation point difference obtains needing light filling intensity values, and then output multi-channel pwm signal controls to open LED light source and adjusts corresponding bright and realizes quantitatively accurately light filling.
5. the greenhouse tomato light filling regulator control system based on growth model according to claim 2, is characterized in that, be set with time block and threshold data in intelligent dimming control module, and time block is used for the switching time of control system; Threshold data comprises temperature threshold, intensity of illumination threshold value and gas concentration lwevel threshold value, when Current Temperatures is within the scope of temperature threshold, just monitor current gas concentration lwevel, when current gas concentration lwevel is in gas concentration lwevel threshold range, just monitor current light intensity.
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