CN201709183U - Field original position intelligent airtight plant growing chamber - Google Patents
Field original position intelligent airtight plant growing chamber Download PDFInfo
- Publication number
- CN201709183U CN201709183U CN2009202560905U CN200920256090U CN201709183U CN 201709183 U CN201709183 U CN 201709183U CN 2009202560905 U CN2009202560905 U CN 2009202560905U CN 200920256090 U CN200920256090 U CN 200920256090U CN 201709183 U CN201709183 U CN 201709183U
- Authority
- CN
- China
- Prior art keywords
- carbon dioxide
- tank body
- casing
- temperature
- case
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Cultivation Of Plants (AREA)
Abstract
A field original position intelligent airtight plant growing chamber is provided with an upper tank body and a lower tank body, the upper tank body is provided with a cover but not provided with a bottom, the lower tank body has no cover and bottom, the upper edge of the lower tank body is provided with a water tank, the lower edge of the upper tank body is put into the water tank and is sealed by water, the lower tank body is embedded into soil, the plant is cultured into the soil in the tank body. An automatic temperature control system is provided with two temperature and moisture sensors put inside and outside of the tank body, the acquired temperature is sent to a data acquiring controller to be compared, when the temperature in the tank body is higher than a setting value of the temperature outside of the tank body, a relay starts a refrigerating system to work, an automatic carbon dioxide control system pumps the gas in the tank body into a carbon dioxide detector to detect, the result is compared with a setting concentration, if the result is larger than the setting concentration, then starting a normal close outlet of an electromagnetic valve to start, the carbon dioxide is sent into the tank body after being absorbed by sodium hydroxide, if the result is lower than the setting concentration, then starting the electromagnetic valve to supplement high purity carbon dioxide, and if the carbon dioxide concentration is within a normal range, the carbon dioxide direction returns into the tank body.
Description
Technical field
The utility model relates to the biological nitrogen fixation Research on ability, especially the airtight growth chamber of a kind of field in-situ intelligent, can be used for tagging, carbon, nitrogen cycle, organic pollutant is originated and the plant discharging volatility is inorganic and organic compound research, belongs to technical fields such as agrology, ecology, microbiology, pollution biology, Plant Nutrition, plant physiology.
Background technology
The production and the use of nitrogenous fertilizer have improved crop yield, have solved the contradiction between global population growth and provand substantially, but have also aggravated global environmental change, and atmosphere, soil and water body are polluted.Biological nitrogen fixation is that microorganism utilizes atmosphere N
2Do raw material, the nitrogenous source of synthesising biological growth needs.Performance natural biology nitrogen fixation can minimizing synthetic nitrogenous fertilizer uses, and can reduce energy resource consumption, reduce peasant's cost that tills the land, and can alleviate the pollution to environment again, reduces greenhouse gas emission.
Rice occupies important status in China cereal crops, thereby research rice field fertilizing amount, and assessment rice field biological nitrogen fixation potentiality seem particularly important.Blue-green algae, duckweed and multiple heterotrophic microorganism all can carry out biological nitrogen fixation in the paddy ecosystem.Because all rice fields and wetland all have the biological nitrogen fixation function,, cause research work to stagnate substantially so when research rice field biological nitrogen fixation potentiality, do not have reference system.
Research rice field and wetland nitrogen fixing capacity method commonly used is to utilize the acetylene reducing process at present: promptly soil specimen is fetched the laboratory from the field, add acetylene in laboratory, measure the variation of concentration of acetylene and estimate the rice field nitrogen fixing capacity.This method has following several respects deficiency: the one, and soil is fetched the laboratory from the field, and very big change has taken place in soil condition; The 2nd, according to acetylene also commercial weight convert biological nitrogen fixation discharge coefficient disunity to, cause rice field nitrogen fixing capacity estimation deviation; The 3rd, acetylene method is an instantaneous value, can't carry out long term test, replaces growth period duration of rice can cause significant errors again with instantaneous value.
Stable isotope
15N
2Labeling technique is the most direct and method accurately of research rice field biological nitrogen fixation, and many scientific workers advocate always, appeal to develop this technology, but because the shortage key equipment is unresolved always.At the beginning of the eighties in last century, once did this respect abroad and attempt, but they can only carry out laboratory test, by the control indoor temperature, the paddy rice kind in the airtight growing environment of indoors artificial, and can't be applied to open-air field condition, differ very big with natural environment.
What the house plant growth case that existing market is sold adopted is constant temperature design and artificial light source.Summer, solar irradiation intensity can reach 100,000 luxs, and the maximum intensity of illumination of artificial light source has only about the 1/5-1/3 of normal solar irradiation intensity, and paddy rice can't be as the field normal growth.The constant temperature design temperature control system of growth case can not change with the variation of environmental temperature, when the temperature inside the box surpasses environmental temperature in the conventional chamber, just produce fog in the case, relative moisture RH reaches 100%, has a strong impact on illumination and plant growing, and also inducing plant is sick easily for high humidity environment.The conventional growth case is to circulate fog in the control cabinet by the case inner air and outer air, can't realize the airtight of growth chamber, thereby can not carry out the isotope gas mark and also can't be applied to rice field biological nitrogen fixation capability study.If the temperature-controlled process of growth chamber simply that present market is on sale is used for open-air growth case, growth the temperature inside the box will sharply raise and produce a large amount of fogs, the very fast death of growth case implants, thereby redesign growth the temperature inside the box control technology is the key that solves field growth in situ case implants normal growth.Conventional Refrigeration Technique normally adopts freon as cold-producing medium, utilizes the gasification absorption heat of freon to reach the refrigeration purpose.Adopt our open-air growth chamber of conventional refrigeration machine such as air conditioner refrigerating, because growth the temperature inside the box frequently changes, it is very frequent to cause refrigeration machine to start, and causes compressor self-protection or burns compressor and system can't be run well.
Summary of the invention
The utility model purpose provides a kind of field in-situ intelligent airtight growth chamber exactly for overcoming above-mentioned defective, and it can be with multiple factor (temperature, humidity, illumination, oxygen, carbonic acid gas, plant disease, sampling etc.) Comprehensive Control, be used to carry out rice field biological nitrogen fixation capability study.The present invention relates to Computer Control Technology, two-stage system refrigeration technique, alternating temperature automatic control technology and CO
2Concentration automatic control technology, airtight technology, gas pressure buffer technology, weeding, the Pesticidal technology of curing the disease can be used for studying plant photosynthesis carbon fixation, transhipment and soil carbon turnover; Also can be used for studying leguminous plant fixed nitrogen dynamically, amount of nitrogen fixation and influence factor, the nitrogen-fixing plants system transmits with non-nitrogen-fixing plants system nitrogen and nitrogen has enough to meet the need; Distinguish plant corpus internal contamination thing source (soil, atmosphere); The organic and inorganic classes of compounds of research plant discharging, quantity and dynamic dispatching are the key equipments of research Global climate change and plant interaction, food pollution control and the circulation of plant source of students key element.
Realize that the above-mentioned purpose technical scheme is: in-situ intelligent airtight growth chamber in a kind of field is provided with casing, temperature, humidity automatic control system, carbonic acid gas automatic control system and weeding, spray medicine, watering system;
Casing is provided with upper and lower two parts, and upper box is that the lid transparent body at the no end is arranged, and the lower box uncovered does not have the end, be provided with tank at the lower box upper limb, it is interior by water-stop that the upper box lower edge is placed on tank, and lower box is placed into the soil, the face of land and tank bottom surface maintain an equal level, and plant cultivation is in casing in the soil;
Temperature, be provided with in the humidity automatic control system and place respectively in the casing, two outer temperature, humidity sensor, the temperature that they are gathered, humidity inputs to data acquisition controller respectively and imports calculator and compares by seetting program, when temperature in the casing is higher than outside the casing field desired temperature, calculator starts refrigeration system work by the data acquisition controller output signal of telecommunication to relay, refrigeration system is the secondary refrigeration, at first adopt conventional cold-producing medium freon to the container refrigeration of glycol water is housed, the glycol water after will freezing then passes through pump as secondary refrigerant, the container that pipeline and the evaporator that is arranged at the upper box madial wall are got back to glycol water carries out kind of refrigeration cycle;
The carbonic acid gas automatic control system comprises that carbonic acid gas is measured and two subsystems of carbonic acid gas control, and wherein carbonic acid gas control subsystem is provided with additional and two subsystems of carbon dioxide absorption of carbonic acid gas again respectively; It is that acquisition port is set on casing that carbonic acid gas is measured subsystem, gas in the case is pumped into carbon dioxide analyzer by pipeline to be detected, testing result inputs to data acquisition controller and imports calculator and carry out concentration ratio by seetting program, if atmospheric carbon dioxide concentration is greater than setting concentration in the case, then calculator is exported the signal of telecommunication by data acquisition controller, start the normally closed port opening of the magnetic valve in this subsystem by the relay in the carbon dioxide absorption subsystem, often leave and mouthful close; This magnetic valve is the triple valve of an import, two outlets, its import is communicated with the casing venthole by pipeline and pump, in two outlets, one is normally closed port, connecting pipeline and sodium hydroxide absorption liquid container are communicated with in the case after the normally closed port, another is normal opening, and normal opening directly is communicated with in the case by the road; If concentration is lower than setting concentration in the case, then calculator replenishes high-purity carbon dioxide by the data acquisition controller output signal of telecommunication by the magnetic valve that the relay in the additional subsystem of carbonic acid gas starts in this subsystem in case; If atmospheric carbon dioxide concentration is in normal range (NR), the data acquisition controller no-output signal of telecommunication then, carbonic acid gas replenishes the relay that reaches in the carbon dioxide absorption two subsystems and does not work, and the normal opening of the magnetic valve of gas in the carbon dioxide absorption subsystem directly returns in the case in the case that acquisition port is come out;
In weeding, spray medicine, the watering system, the weeding system is on the two sides of upper box near the bottom, respectively has circular hole, circular hole periphery sealed attachment rubber gloves mouth, and hand stretches into and removes weeds in the case in the gloves; Spray medicine watering system is to open 1 hole at upper box, inside and outside 1 leather hose connect box, and a termination shower nozzle in the case, the outer termination Manual pressure container of case is marked with water or medicament in the Manual pressure container.
Said upper box light transmittance will be higher than 90%, is used for about the sodium hydroxide absorption liquid concentration 4mol/L of carbon dioxide absorption.
When carbonic acid gas is measured, preferably pass through filter and drier with after gas pumps in the case, after removal gaseous impurity, the reduction humidity, send into carbon dioxide analyzer again.
Also be provided with 2 holes on the upper box top cover, 1 hole connects the oxygen analyser inlet, and the oxygen analyser outlet connects another hole and returns in the case; Also be provided with fan on the upper box inwall; The upper box wall is provided with
15N
2The gas inlet; The peripheral hardware airbag is communicated with connected entrance 〉=10mm with casing is interior.
Advantage of the present invention and remarkable result:
(1) alternating temperature control technology: apparatus of the present invention have can adopt the field lamp, can realize automatically that under air tight condition the temperature inside the box changes with the variation of environmental temperature, solved the problem that the temperature inside the box raises and the product mist causes plant not grow, this is that the artificial climate growth chamber is not available in the existing market, and international and domestic all do not have a similar or similar installation.For example at research rice field biological nitrogen fixation ability category, international and domestic all do not have this technological means report;
(2) two-stage system refrigeration technique: at first adopt conventional cold-producing medium by the freeze glycol water of low freezing point, low volatilization, high heat capacity of coil pipe, glycol water after will freezing by circulating pump then pumps into the evaporator in the growth case, has realized reducing the purpose of growth the temperature inside the box.This technology has solved the frequent starting of conventional refrigeration machine (as air-conditioning) and the refrigeration machine self-shield or the breaking-up problem that cause, has solved the unmanageable problem of conventional refrigeration mechanism cold.
(3) integration: the present invention is melted Computer Control Technology, alternating temperature control technology, two-stage system refrigeration technique, gas concentration lwevel control technology and weeding, spray medicine, is watered water function in one, realized the Based Intelligent Control of system temperature and gas concentration lwevel, improved test reliability and reduced experimenter's working strength.Even experiment shows that at torridity summer the temperature inside the box and ambient temperature differences also can be controlled in the positive and negative 2 degree scopes;
(4) cabinet design science: upper box lucite light transmittance height does not influence illumination; The gas Detection ﹠ Controling are all carried out outside case, easy care and maintenance instrument.Evaporator is installed in growth case both sides simultaneously, does not influence the illumination of growth case, also has enough spaces to satisfy the plant growing requirement in the case
Description of drawings
Fig. 1 is a growth case general illustration;
Fig. 2 is a growth case vertical view;
Fig. 3 is a growth case stereogram;
Fig. 4 is that computer program is write flow chart;
Fig. 5～7th, growth case practical application embodiment design sketch.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and example.
The drawing reference numeral explanation: 1, data acquisition controller; 2, signal transmssion line; 3, spray medicine mouth waters; 4, fan; 5, rubber gloves; 6, top growth case; 7, sodium hydroxide solution; 8,25,26 relays; 9,27, magnetic valve; 10,28, circulating pump; 11, bottom growth case; 12, refrigeration machine; 13, the temperature inside the box sensor; 14,29, gas flowmeter; 15, high-purity carbon dioxide; 16, the field temperature sensor; 17, airbag; 18, valve; 19, the carbonic acid gas infrared spectrum analyser; 20, pneumatic filter; 21, drier; 22, evaporator; 23, the sampling gas injection port; 24, nylon tube; 30, calculator; 31, the antifreeze container; 32, the kind of refrigeration cycle pump.
Referring to Fig. 1-3, the growth case is made of jointly upper box 6 and lower box 11, and upper box can be processed that (poly (methyl methacrylate) plate is that 10mm is thick by the transparent organic glass of high transmission rate (being higher than 90%); Long is 110cm, wide is 50cm, height is 95cm), lower box can be made (length is 100cm, and wide is 50cm, and height is 45cm) by the PVC panel of high-strength corrosion-resisting, the lower box upper limb is provided with tank (the tank height is 10cm), it is interior by water-stop that the upper box lower edge is placed on tank, when the case internal gas pressure changes, can be clearly seen that water level just changes.Lower box is placed into the soil, and the face of land and tank bottom surface maintain an equal level, and plant cultivation is in casing in the soil.
Be provided with two temperature, the humidity sensor 13,16 that places casing inside and outside respectively in temperature, the humidity automatic control system, the temperature that they are gathered inputs to data acquisition controller 1 and imports calculator 30 by signal transmssion line 2 respectively and compares, when temperature in the casing was higher than outside the casing duration of field temperature setting range, calculator started circulating pumps 32 work by the data acquisition controller output signal of telecommunication to relay 26.Refrigeration system is the secondary refrigeration, at first adopt refrigeration machine 12 work, with container 31 refrigeration of conventional cold-producing medium freon to glycol water is housed, the container 31 that glycol water after will freezing is then got back to two alcohol solutions by pump 32, pipeline and the evaporator 22 that is arranged at the upper box two side carries out the secondary refrigeration circulation, with temperature, humidity in the rapid reduction case.Also, quicken exchange heat in evaporator and the case by both sides inwall mounted fan 4 (bore is 12cm, adopts the 220v AC power).Refrigeration machine 12 among the present invention just is used for to the glycol water cooling, and according to the design temperature parameter, refrigeration machine 12 starts voluntarily.When glycol water reached design temperature, refrigeration machine just quit work, otherwise refrigeration machine will be worked always till the design temperature.
Because the utility model has adopted the design of above-mentioned two-stage system cooling system, at first by the glycol water of conventional freon refrigeration low freezing point, low volatilization, high heat capacity, then by cooled ethylene glycol refrigeration growth case.If the ethylene glycol temperature is lower than design temperature, refrigeration machine starts voluntarily so, till the ethylene glycol antifreeze is cooled to design temperature.Summer, solar irradiation intensity was very high, and the solar constant value that World Meteorological Organization (WMO) was recommended in 1981 is 1368 watts every square metre, so the refrigeration compressor refrigerating capacity must be greater than 1368 watts every square metre.Refrigeration machine rated power is 950W among the present invention, and maximum cooling capacity can reach 2500W.Secondly, glycol water will have the characteristic of low freezing point, low volatilization, high heat capacity, because refrigeration machine need could be reduced to environmental temperature with the temperature inside the box rapidly with glycol-cooled to subzero about 20 ℃ usually.Among the present invention, we adopt 60% glycol water (being that ethylene glycol and water volume ratio are 60/40) as circulating cooling medium, and 60% glycol water just freezes in the time of-40 ℃.The glycol water volume is 20L among the present invention.The power of circulating pump 32 is 60W among the present invention, and lift is 9-12m.Data acquisition controller is controlled circulating pump 32 indirectly by relay 26, and realization the temperature inside the box is controlled automatically.According to actual motion observation, in high temperature period at noon in summer, being cooled to subzero 20 ℃ glycol water can be in 5 minute, and the temperature inside the box of will growing rapidly is reduced to environmental temperature, thereby has created condition for the temperature inside the box real-time change.
Simultaneously, the alternating temperature design that the utility model adopts, promptly the temperature inside the box changes with the variation of environmental temperature, has solved well and has produced the mist problem in the case.Adopted 13,16, one of 2 temperature sensors to place outside the case, one places in the case, and the inside and outside Temperature Humidity Sensor of case belongs to same model, mainly contains film platinum resistor, macromolecule membrane humicap composition.Measuring temperature accuracy is ± 0.3 ℃, and measuring the humidity precision is ± 5%, and temperature is output as four lead resistances, and humidity is output as 0-1V voltage, and market can have been bought.Data acquisition controller was gathered the internal and external temperature sensing data automatically every 5 seconds, and transfer of data to calculator is compared.When the temperature inside the box is higher than the environmental temperature certain value, data acquisition controller will start the glycol water circulating pump, pump into the evaporator that the upper box madial wall is settled through the cooled glycol water of refrigeration machine via pipeline, it is cooled that container is got back in glycol water recycle in the respiratory box behind the heat, make the temperature inside the box realize alternating temperature control, can change along with the change of environmental temperature, satisfy the actual growth conditions of plant.
The carbonic acid gas automatic control system comprises that carbonic acid gas is measured and carbonic acid gas is controlled two independently pipe-line systems, and wherein the carbonic acid gas control system is provided with additional and carbon dioxide absorption two independent particle systems of carbonic acid gas again respectively; The carbonic acid gas measuring system is that acquisition port is set on casing, and gas in the case is pumped into carbon dioxide infrared spectrum analyser 19 and detects by pipeline, pump 28.It is 0-3000ppm that the carbon dioxide infrared spectrum analyser adopts range, and the response time is 0.3 second, and precision is ± 1ppm.Binary channels simulation output has 100mv, and 5v and 20mA are available, 12bit D/A, and market is on sale.
Because water vapor absorption is distributed in whole middle-infrared band, the quantitative analysis of infrared spectrum is disturbed in its existence.So when utilizing the infrared spectrum analysis gas concentration lwevel, must consider the absorption feature of steam.The tested gas that high humidity and dew-point temperature are higher than environmental temperature condensation can occur during by the Instrumental Analysis Lab, at this moment needs to take to increase filter or gas heated to eliminate.Traditional growth case is not considered sealing, so do not run into this problem owing to be open.Because the present invention is airtight growth case, gas can not be revealed in the case, and the gas behind the analysis gas concentration lwevel still needs to return in the case, so need overcome the steam interference problem.Among the present invention, before the analytical gas gas concentration lwevel, at first gas is removed impurity and most of steam in the gas by pneumatic filter, and then by gas-drying apparatus, at last again to capnograph.The gas-drying apparatus that adopts can effectively drop to gas humidity below the steam interference value based on the water transport mechanism of vaporous water gradient difference.Gas reduces gaseous impurity and gas humidity by filter 20 and gas-drying apparatus 21 before detecting.Otherwise instrument can not correctly be analyzed gas concentration lwevel, and this point is extremely important in the field original position is analyzed, because the steam that exists in the gas influences the accuracy that infrared carbon dioxide analyzer 19 detects greatly.The capnograph testing result is to data acquisition controller 1 and import calculator 30, compare by seetting program concentration, if atmospheric carbon dioxide concentration is greater than setting concentration in the case, then calculator is exported the signal of telecommunication by data acquisition controller, by the normally closed port opening of the magnetic valve 9 in 8 these subsystems of startup of the relay in the carbon dioxide absorption subsystem, often leave mouth and close; This magnetic valve 9 is the triple valve of an import, two outlets, its import is communicated with the casing venthole by pipeline and pump 10, in two outlets, one is normally closed port, another is normal opening in the connection case behind connecting pipeline and sodium hydroxide absorption liquid container 7 absorbing carbon dioxides after the normally closed port, and normal opening directly is communicated with in the case by the road; If concentration is lower than setting concentration in the case, then calculator is exported the signal of telecommunication by data acquisition controller, replenish the magnetic valve 27 that the relay 25 in the subsystem starts in this subsystem by carbonic acid gas, in case, replenish high-purity carbon dioxide gas through pressure-reducing valve, flowmeter 14 by high-purity carbon dioxide gas cylinder 15; If atmospheric carbon dioxide concentration is in normal range (NR), the data acquisition controller no-output signal of telecommunication then, carbonic acid gas replenishes the relay 25,8 that reaches in the carbon dioxide absorption two independent subsystems and does not work, and magnetic valve 9 normal openings, the circulating pump 10 of gas in the carbon dioxide absorption subsystem directly returns in the case in the case that acquisition port is come out.The flow of circulating pump 10,28 is 4L/min, and the excessive capnograph that is not suitable for of flow detects.Because be 24 hours monitoring density of carbon dioxide gas, circulating pump 10 and 28 also is running in 24 hours.
According to by plant physiology as can be known, daytime, the case implants needed absorbing carbon dioxide, evening the plant release of carbon dioxide.According to our preliminary experiment, the carbonic acid gas that paddy rice discharges at night can make that density of carbon dioxide gas reaches about 1000ppm in the case, by carbon dioxide and sodium hydroxide liquid reactions formula as can be known: 2NaOH+CO
2=Na
2CO
3+ H
2O establishes 600L gas in the case, wherein contain CO
20.1% (being 1000ppm), 30 days is a period, is total to 600*0.1%*30=18L, under the status of criterion, the molal volume of gas is about 22.4L/mol.The amount of gaseous matter is: n (CO
2)=18/22.4=0.8mol knows N (NaOH)=2n (CO by formula
2)=1.6mol promptly absorbs the 18L carbon dioxide, needs the sodium hydrate solid of 1.6*40=64g, and being mixed with sodium hydroxide solution is exactly 1.6mol/L.Because the flow of circulating pump is 4L/min in this experiment, for the faster absorption carbon dioxide, so concentration of sodium hydroxide solution can be made into about 4mol/L.
In weeding, spray medicine, the watering system, the weeding system is on the two sides of upper box near the bottom, respectively have 3 circular holes (diameter 15cm), the circular hole periphery rubber gloves mouth 5 that is tightly connected, hand stretches into and removes weeds in the case in the gloves, gloves require sun-proof, and are superior in quality, also will put the protection lid in the gloves outside simultaneously; Spray medicine watering system is to open 1 hole 3 at upper box, the inside and outside and requirement sealing with 1 leather hose connect box, and a termination shower nozzle in the case, the outer termination Manual pressure container of case, container capacity is 10 liters, is marked with water or medicament in the Manual pressure container.
The utility model considers that oxygen concentration detects problem, is provided with 2 holes on the upper box top cover, and 1 hole connects the oxygen analyser inlet, and the outlet of oxygen analyser connects another hole to be returned in the case, can detect oxygen concentration.2 fans on the upper box inwall can be used for gas in the mixing case; Also be provided with the nitrogen inlet on the upper box wall, open nut when needing to use and get final product.The upper box top cover is provided with 2 holes, and a hole can connect the oxygen analyser inlet, and the outlet of oxygen analyser connects another hole to be returned in the case, can detect oxygen concentration in the casing; The upper box wall is provided with annotates the nitrogen mouth; Peripheral hardware airbag 17 is communicated with connected entrance diameter 〉=10mm with casing is interior.
Be provided with in the utility model in airbag 17 and the casing and be communicated with, the effect of airbag 17 is: during the refrigeration break-off, sun direct projection is on transparent casing in refrigeration system is finished case, and the temperature inside the box rising is very fast.According to The Ideal-Gas Equation, quality is m, and molal weight is the perfect gas of M, and the functional relation between its state parameter pressure p, volume V and the absolute temperature T is pV=mRT/M=nRT.In the equation of state that mole is represented, R is a proportionality constant, and for any desired gas, R is a definite value.We suppose that gas pressure intensity and the gas amount of substance in the case is constant, and gas temperature is exactly the linear function of gas volume so.According to calculating, suppose that the temperature inside the box is increased to 35 when spending from 32 degree, gas volume will increase about 5L, so airbag volume of the present invention is 10L, connected entrance diameter 〉=10mm.Airbag is set just can temporarily cushions loading pressure, waiting for that next antifreeze circulates reduces the temperature inside the box, and is unlikely to that loading pressure is too high to cause gas leakage in the case.
Computer software is the core of automated system operation, and existing market does not have the canned software can be for buying, and is our independent development.In the utility model, data acquisition controller is every the temperature inside the box humidity of collection in 5 seconds, box outside temperature humidity, density of carbon dioxide gas in case of collection in 30 seconds, and the automatic data of gathering of preserving, researcher also can pass through data wire, connects data acquisition controller and downloads the data of preservation at any time.The support software bag that the binding data acquisition controller provides, the control personnel can show measurement data and state of a control with numeral or curvilinear figure, also can make amendment to the control parameter in good time, realize human-computer dialogue.Software kit can move on Windows 3.1/95/98/NT/2000/XP platform among the present invention, and complete installation needs the 15MB hard drive space.Minimum computer processor is 486, possesses RS232 interface (DB-9), can realize communicating by letter with data acquisition controller, and message transmission rate is defaulted as 9600b/s.
Assembling, method of operating and the embodiment of the utility model growth case are as follows:
(1) casing the latter half 11 is placed into the soil middle 20cm, between the compacting soil body and tank wall in outer void, and allow between the soil body and casing soil natural heavy real to reach the sealing of the soil body and casing Lower Half tank wall;
(2) this experimental data acquisition controller (model is CR10x, self-editing Edlog language control program) has 12 passages, and the A/D figure place is 13, and aanalogvoltage resolution is 0.33 μ v, and program internal memory is 16k, can buy in market.Self-editing computer-controlled program is provided with the control parameter of temperature and gas concentration lwevel according to the experiment needs.Since be at the outdoor application data acquisition controller, thus require data acquisition controller to be placed in the sun-proof rainproof case, to guarantee the data acquisition controller stable performance.
(3) the carbonic acid gas detection system need be with circulating pump 28 and air cleaner 20, air dryer 21, and flowmeter 29, capnograph 19, valve 18, circulating pump 28 and upper box body 6, calculator 30 couples together; Replenish the high-purity carbon dioxide gas system, need be with high-purity carbon dioxide gas 15, flowmeter 14, magnetic valve 27, relay 25, data acquisition controller 1, calculator 30, pipe valve and upper box body 6 couple together; Absorbing carbon dioxide need be with data acquisition controller 1, magnetic valve 9, and circulating pump 10, relay 8, sodium hydroxide 7 and upper box body 6 couple together; Nylon tube 24 bores that connect usefulness are 3-5mm;
(5) refrigeration system need be with data acquisition controller 1, refrigeration machine 12, and relay 26, evaporator 22, circulating pump 32, calculator 30, glycol water container 31 and upper box body 6 couple together; The inside and outside Temperature Humidity Sensor of connecting box, data acquisition controller and calculator use copper wire braid shielded cord, to reduce the interference to signal; Connection relay, circulating pump, capnograph use the ordinary copper core electric wire to get final product.
(6) connect weeding and spray medicine system: sun-proof rubber gloves 5 and upper box body 6 are coupled together, will water and spray medicine mouth 3 and upper box body 6 couples together, these several places connect and necessarily require good airproof performance, prevent gas leakage;
(7) put into plant: open casing the first half 6, institute's palpus research plant transplantation or sowing are gone in casing Lower Half 11 spaces, cover the casing first half 6, inject about 8cm water in the lower part box upper limb tank; Also can put little basin, pot plant in the lower part box;
(8) charge into the nitrogen isotope according to experiment purpose: after reexamining the operation normally of system sealing and system, in casing, take out 10% gas earlier, inject and take out at once 99% abundance of gas equal volume from thief hatch 23
15N
2Gas, stable to keep the case internal gas pressure;
(10) daily management: close observation soil water regime and damage by disease and insect situation, in time add moisture and spray medicine; Close observation titanium dioxide analyzer, pneumatic filter, gas-drying apparatus, Temperature Humidity Sensor guarantees the instrument operate as normal.Regularly copy, analyze data simultaneously.
(11) carry out sample analysis according to experiment purpose: after the plant maturation, the proper amount of gas sample is got in the halt system operation, opens casing the first half, takes out growth plant and soil, measures the plant dry weight, analyze in soil and the plant body nitrogen content and
15The N abundance, analyze simultaneously in the case all gases concentration and
15N
2Abundance;
(12) check the instrument accessory, experiment finishes.
The utility model is at Jiangdu indiction town Ma Liang village seed multiplication farm, and the case of will growing is placed in the paddy field.From top box on July 1, temperature is set at the field temperature and differs positive and negative 2 degree; Gas concentration lwevel is set at 400ppm, and positive negative phase contrast is no more than 30ppm.Fig. 5,6,7 is according to actual operating data mapping in 1 month case of instrument operation.
Fig. 5 is the temperature inside the box control situation; As can be seen from the figure come, field temperature (solid line) is almost overlapping with the temperature inside the box (dotted line), and the approximate field of the temperature inside the box natural temperature is described, design Pass Test requirement.
Fig. 6 is a carbonic acid gas working control situation in the case; As can be seen from the figure come, the interior gas concentration lwevel mean value of case on daytime meets the actual conditions in rice field about 410ppm.Illustrate that gas concentration lwevel control meets the requirements in the growth case.
Fig. 7 is a relative moisture situation in the case; As can be seen from the figure come, humidity changes along with variations in temperature in the case, and relative moisture mean value meets the actual conditions in rice field in the case of growing daytime about 90%.
Claims (5)
1. the airtight growth chamber of field in-situ intelligent is characterized in that: be provided with casing, temperature, humidity automatic control system, carbonic acid gas automatic control system and weeding, spray medicine, watering system;
Casing is provided with upper and lower two parts, and upper box is that the lid transparent body at the no end is arranged, and the lower box uncovered does not have the end, be provided with tank at the lower box upper limb, it is interior by water-stop that the upper box lower edge is placed on tank, and lower box is placed into the soil, the face of land and tank bottom surface maintain an equal level, and plant cultivation is in casing in the soil;
Temperature, be provided with in the humidity automatic control system and place respectively in the casing, two outer temperature, humidity sensor, two temperature, the output signal of humidity sensor is connected to data acquisition controller respectively and is compared by calculator, the signal of telecommunication of comparative result is connected to relay, relay output connects refrigeration system, refrigeration system is the secondary refrigeration structure, at first adopt conventional cold-producing medium freon to the container refrigeration of glycol water is housed, glycol water after will freezing then passes through pump, pipeline connection is arranged at the evaporator of upper box madial wall, and the glycol water that evaporator flows out returns the container of glycol water by the road;
The carbonic acid gas automatic control system comprises that carbonic acid gas is measured and carbonic acid gas is controlled two independently pipe-line systems, and wherein the carbonic acid gas control system is provided with additional and carbon dioxide absorption two independent particle systems of carbonic acid gas again respectively; The carbonic acid gas measuring system is that acquisition port is set on casing, gas in the casing is returned in the case behind the carbon dioxide infrared spectrum analyser by pipeline and pump, the testing result of carbon dioxide infrared spectrum analyser inputs to data acquisition controller and is compared with setting gas concentration lwevel by calculator, and the signal of telecommunication of comparative result is connected respectively to the additional relay input that is provided with respectively in carbon dioxide absorption two independent particle systems that reaches of carbonic acid gas; The relay output that carbonic acid gas replenishes subsystem connects magnetic valve, and the import of magnetic valve is communicated with the dioxide bottle outlet by the road; The outlet of magnetic valve is communicated with in the casing by the road; The relay output of carbon dioxide absorption subsystem connects magnetic valve, this magnetic valve is the triple valve of an import, two outlets, its import is communicated with the casing venthole by pipeline and pump, in two outlets, one is normally closed port, connecting pipeline and sodium hydroxide absorption liquid container are communicated with in the case after the normally closed port, and another is normal opening, and normal opening directly is communicated with in the casing by the road.
In weeding, spray medicine, the watering system, the weeding system is on the two sides of upper box near the bottom, respectively have circular hole, circular hole periphery sealed attachment rubber gloves mouth, spray medicine watering system is to open 1 hole at upper box, inside and outside 1 leather hose connect box, and a termination shower nozzle in the case, the outer termination Manual pressure container of case is marked with water or medicament in the Manual pressure container.
2. the airtight growth chamber of field according to claim 1 in-situ intelligent, it is characterized in that: the upper box light transmittance is higher than 90%, is used for the sodium hydroxide absorption liquid concentration 4mol/L of carbon dioxide absorption.
3. in-situ intelligent airtight growth chamber in field according to claim 1 and 2 is characterized in that: in the carbonic acid gas measuring system, be provided with drier in the pipeline between casing acquisition port and carbon dioxide infrared spectrum analyser.
4. in-situ intelligent airtight growth chamber in field according to claim 1 and 2 is characterized in that: also be provided with 2 holes on the upper box top cover, 1 hole connects the oxygen analyser inlet, and the oxygen analyser outlet connects another hole and returns in the case; Also be provided with fan on the upper box inwall; The upper box wall is provided with
15N
2The gas inlet; The peripheral hardware airbag is communicated with connected entrance 〉=10mm with casing is interior.
5. in-situ intelligent airtight growth chamber in field according to claim 3 is characterized in that: also be provided with 2 holes on the upper box top cover, 1 hole connects the oxygen analyser inlet, and the oxygen analyser outlet connects another hole and returns in the case; Also be provided with fan on the upper box inwall; The upper box wall is provided with
15N
2The gas inlet; The peripheral hardware airbag is communicated with connected entrance 〉=10mm with casing is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202560905U CN201709183U (en) | 2009-12-02 | 2009-12-02 | Field original position intelligent airtight plant growing chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202560905U CN201709183U (en) | 2009-12-02 | 2009-12-02 | Field original position intelligent airtight plant growing chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201709183U true CN201709183U (en) | 2011-01-19 |
Family
ID=43455172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202560905U Expired - Lifetime CN201709183U (en) | 2009-12-02 | 2009-12-02 | Field original position intelligent airtight plant growing chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201709183U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101731110B (en) * | 2009-12-02 | 2011-05-11 | 中国科学院南京土壤研究所 | Field in-situ intelligent airtight vegetable growth chamber |
| CN103947511A (en) * | 2014-04-22 | 2014-07-30 | 青岛农业大学 | Irrigation system applicable to irregular-shaped irrigation region and irrigation method |
| CN104221740A (en) * | 2014-10-11 | 2014-12-24 | 中国环境科学研究院 | Device and method for continuously and quantitatively labeling plants |
| CN106680044A (en) * | 2016-12-29 | 2017-05-17 | 上海交通大学 | Methane collection device and methane collection method for rice stable isotope labeling |
| CN106769271A (en) * | 2017-02-17 | 2017-05-31 | 兰州大学 | A kind of soil respiration automated collection systems |
| CN112051871A (en) * | 2020-08-31 | 2020-12-08 | 中国科学院西北生态环境资源研究院 | In-situ control device for temperature of soil for field plant growth |
-
2009
- 2009-12-02 CN CN2009202560905U patent/CN201709183U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101731110B (en) * | 2009-12-02 | 2011-05-11 | 中国科学院南京土壤研究所 | Field in-situ intelligent airtight vegetable growth chamber |
| CN103947511A (en) * | 2014-04-22 | 2014-07-30 | 青岛农业大学 | Irrigation system applicable to irregular-shaped irrigation region and irrigation method |
| CN104221740A (en) * | 2014-10-11 | 2014-12-24 | 中国环境科学研究院 | Device and method for continuously and quantitatively labeling plants |
| CN106680044A (en) * | 2016-12-29 | 2017-05-17 | 上海交通大学 | Methane collection device and methane collection method for rice stable isotope labeling |
| CN106769271A (en) * | 2017-02-17 | 2017-05-31 | 兰州大学 | A kind of soil respiration automated collection systems |
| CN112051871A (en) * | 2020-08-31 | 2020-12-08 | 中国科学院西北生态环境资源研究院 | In-situ control device for temperature of soil for field plant growth |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101731110B (en) | Field in-situ intelligent airtight vegetable growth chamber | |
| CN201709183U (en) | Field original position intelligent airtight plant growing chamber | |
| Both et al. | Guidelines for measuring and reporting environmental parameters for experiments in greenhouses | |
| CN104025950B (en) | A kind of warmhouse booth | |
| CN205408854U (en) | Divide accuse formula plant breeding device | |
| CN107047265B (en) | Circulating system for culturing high-abundance isotope carbon and nitrogen double-labeled plant sample | |
| CN102160505A (en) | Method and system for providing carbon dioxide and heat for greenhouse | |
| CN110231314B (en) | Online monitoring device for activated sludge | |
| CN102207454A (en) | Device and method for field in-situ determination of farmland ammonia volatilization | |
| CN203761964U (en) | Lighting culture and isotope labeling integrated device | |
| CN210519655U (en) | Arbuscular mycorrhizal fungi propagation device | |
| CN202819146U (en) | Intelligent-type bird nest type comprehensive planting greenhouse | |
| CN112425502A (en) | Intelligent ETFE air pillow type membrane structure plant rapid growth environment adjusting device | |
| Warembourg et al. | Photosynthesis/translocation studies in terrestrial ecosystems | |
| CN104374901B (en) | Multifunctional small-size carbon converges measures assimilation box device | |
| Zhou et al. | Multi-objective environment chamber system for studying plant responses to climate change | |
| CN106168818A (en) | A kind of cultivating edible monitoring system and method thereof | |
| CN210695223U (en) | Case is cultivated to multi-functional constant temperature of wisdom agricultural | |
| Mayeux et al. | A controlled environment chamber for growing plants across a subambient CO 2 gradient | |
| CN104620959A (en) | Experiment system and method for optimizing plant nitrogen fertilizer application quantity | |
| CN204560492U (en) | A kind of experimental system optimizing plant nitrogen fertilizer amount of application | |
| CN102279179B (en) | Device for researching crop canopy ammonia exchange in situ at farmland and monitoring method | |
| CN102835277A (en) | Intelligent nest-type integrated-planting greenhouse | |
| CN207380011U (en) | A kind of device for detecting crop rhizosphere breathing and plant carbon markings | |
| CN109097273A (en) | A kind of New Refrigerating anaerobic culture box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110119 Effective date of abandoning: 20091202 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110119 Effective date of abandoning: 20091202 |