CN103299892A - Cluster-type water temperature control system for floating tobacco seedling growing pond - Google Patents
Cluster-type water temperature control system for floating tobacco seedling growing pond Download PDFInfo
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- CN103299892A CN103299892A CN201310270337XA CN201310270337A CN103299892A CN 103299892 A CN103299892 A CN 103299892A CN 201310270337X A CN201310270337X A CN 201310270337XA CN 201310270337 A CN201310270337 A CN 201310270337A CN 103299892 A CN103299892 A CN 103299892A
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Abstract
A cluster-type water temperature control system for a floating tobacco seedling growing pond comprises an external heat exchange type water pond heating device, a plurality of independent water pond water temperature controllers, a control bus and a central control computer, wherein the external heat exchange type water pond heating device is used for heating a water pond; as an external heat exchange type heating mode is adopted, all parts are mounted outside the seedling growing pond, and the modifying and mounting operations are convenient on the basis of a conventional seedling growing pond; the independent water pond water temperature controllers are used for accurately controlling the water temperature of a single seedling growing pond by controlling a combined action of an electromagnetic valve and a circulating water pump; and the independent water pond water temperature controllers are connected with the central control computer through the control bus to form a cluster-type control system for achieving centralized monitoring. By using the system, the water temperature of the floating seedling growing pond can be adjusted to an optimal seedling growth temperature, so that the seedling growing time is shortened, the tobacco seedling quality is improved, and the purposes of improving productivity and efficiency are achieved; and the system has the advantages of convenience for mounting and use, preciseness for control, high automation level and the like.
Description
Technical field
The present invention relates to a kind of concentrating type tobacco floating seed rearing pond water temperature control system.
Background technology
The tobacco seedling purpose is for Production of Large Fields provides in good time, sufficient, healthy and strong, neat cigarette seedling.Floating seedlings be with planting seed in the seedling-cultivating tray of matrix is housed, seedling-cultivating tray swims in nursery pond nutrient solution surface, finish a kind of soilless-cultivated seedling method of whole seedling raising process, aspect intensive management, production efficiency and cultivation cigarette seedling quality, have the incomparable management of conventional seedbed system and technical advantage, its successful research is the major transformation of tobacco seedling history the next item up.The floating seedlings technology is widely used in China, and the floating seedlings area was 111.82 ten thousand hectares in 2009, accounted for 97.02% of the gross area.
Flue-cured tobacco is the warm crop of happiness, and the preference temperature of growing is 20-24 ℃, needs 3300～3500 ℃ accumulated temperature the time of infertility.The normal sprouting of tobacco seed needs enough moisture and suitable temperature.For satisfying the field-transplanting in the first tenday period of a month in May, optimum sowing time should be that mid-February is to early March.And this period, there were the problems such as temperature is low, day and night temperature large, the nursery pond solution temperature is low in most cigarettes district, had a strong impact on the seedling-growing time of cigarette seedling and the cultivation in strong sprout.
The at present control of tobacco seedling temperature mainly realizes by plastic greenhouse or greenhouse heat-insulating, is difficult to reach the optimum temperature of emergence of seedling and its growth when environmental temperature is low.Adopt modern greenhouse to grow seedlings can to carry out the greenhouse that integral body is heated and carry out precision temperature control, but the cost of growing seedlings in can increasing like this.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art provide a kind of simple in structure, avoid low temperature environment on the impact of seedling raising process, be conducive to reduce seedling-growing time, can cultivate strong sprout and strengthen Seedling Quality, and shorten the also concentrating type tobacco floating seed rearing pond water temperature control system in seedling stage after transplanting.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of concentrating type tobacco floating seed rearing pond water temperature control system, comprise external heat switch type pond heating apparatus, independent sump water temperature controller, control bus and central control computer, described independent sump water temperature controller is realized the temperature in the pond of growing seedlings is controlled by controlling described external heat switch type pond heating apparatus, and described control bus links to each other a plurality of independent sump water temperature controllers with described central control computer.
Described external heat switch type pond heating apparatus comprises heat exchanger, magnetic valve, water circulating pump and circulating line, described external heat switch type pond heating apparatus is installed in beyond the nursery pond, described water circulating pump makes the pool inner water of growing seedlings enter heat exchanger and form closed circulation by described circulating line, and described heat exchanger is connected with outside heating system and opens and closes by the described outside heating system of described solenoid control.
Described independent sump water temperature controller obtains temperature information by being installed in a plurality of temperature sensors that reach on the hot water pipeline in the nursery pond, and makes up the action realization to the control of water temperature by the described magnetic valve of temperature information FEEDBACK CONTROL and the water circulating pump that obtains.
Described independent sump water temperature controller is provided with control appliance, transceiver and human-computer interaction device, can independently control the single sump water temperature of growing seedlings by the human-computer interaction device, be connected with control bus by transceiver a plurality of independent sump water temperature controllers and described central control computer are connected to form the concentrating type control system.
Described control bus adopts the RS485 bus.
Described central control computer adopts industrial computer, and described central control computer communicates by described control bus and independent sump water temperature controller, and independent sump water temperature controller feeds back to described central control computer with the water temperature of nursery pond.
Because adopt said structure and operation principle, this device has following advantage:
1, this device adopts the external heat exchanged form that nutrient solution in the pond is heated.By heat exchanger the ducted hot water of central heating and nutrient solution are carried out exchange heat, make nutrient solution in the pond constantly cycle through heat exchanger to reach the balanced purpose of pool inner water temperature by water circulating pump.Nutrient solution can not affect total amount and the composition of nutrient solution in the nursery pond only in the circulation of nursery pond inner sealing, effectively avoids the damage by disease and insect cross-infection between nursery pond simultaneously.
2, system architecture is simple, and the parts such as heat exchanger, water circulating pump, water pipe, controller, valve have all adopted the mode of installing outside the pond, are applicable to the pond of growing seedlings of various different structure sizes, and need not any rebuilding construction is carried out in the pond.Have easy for installation, the advantage that adaptability is good.
3, in the pond zones of different a plurality of temperature sensors are set, obtain pond real time temperature information by the comprehensive computing of each regional temperature value, adopt corresponding control algolithm to make control decision in conjunction with set target temperature again, the combination of control magnetic valve and water circulating pump moves to realize the control of temperature, has control accurate, uniformity of temperature profile, the advantage that system reliability is high.
4, adopt concentrating type control, automaticity is high, uses easy to operate.
In sum, this device can be regulated the floating seedlings sump water temperature easily to the seedling optimum growth temp, thereby shortens seedling raise period, improves cigarette seedling quality, reaches the purpose that increases production and improves productivity.
Description of drawings
Fig. 1 is external heat switch type of the present invention pond heating apparatus structural representation.
Fig. 2 is independence sump water temperature controller system structural representation of the present invention.
Fig. 3 is concentrating type control system structural representation of the present invention.
Among Fig. 1 to 3,1, heat exchanger, 2, magnetic valve, 3, water circulating pump, 4, circulating line, 5, the cold junction temperature sensor, 6, the medium temperature sensor, 7, the hot-side temperature sensor, 8, heat supply hot water temperature sensor, 9, the pond of growing seedlings, 10, independent pond temperature controller, 11, single-chip microcomputer, 12, memory, 13,14,15,16, temperature transmitter, 17, analog-digital converter, 18, the solenoid control relay, 19, the water pump control relay, 21, bus transceiver, 21, LCDs, 22, keyboard, 23, power supply, 24, central control computer, 25, bus transceiver, 26, control bus, 27, the pond heating apparatus.
Embodiment
Below in conjunction with accompanying drawing, further describe the specific embodiment of the present invention.
The technical solution used in the present invention is: by external heat switch type pond heating apparatus, and independent sump water temperature controller, control bus and central control computer form
As shown in Figure 1, external heat switch type pond heating apparatus comprises heat exchanger 1, magnetic valve 2, water circulating pump 3 and circulating line 4.Circulating line 4 is installed in outside the pond 9 of growing seedlings, and heat exchanger 1 and water circulating pump 3 are installed on the circulating line 4.The nutrient solution that to grow seedlings in the pond 9 by water circulating pump 3 is retracted in the circulating line 4, heats by the nutrient solutions in 1 pair of circulating line of heat exchanger 4, and then sends the pond 9 of growing seedlings back to by circulating line 4.Heat exchanger 1 also is connected with the central hot water supply system pipeline by magnetic valve 2, and during magnetic valve 2 conducting, the nutrient solution that hot water transports heat transferred circulating line 4 by heat exchanger 1 owing to pressure of supply water is realized being heated in the pond 9 of growing seedlings.For realizing the control of accurate uniformly water temperature, three temperature sensors have been installed respectively along its length: cold junction temperature sensor 5, medium temperature sensor 6, hot-side temperature sensor 7 in the pond 9 of growing seedlings; At the central heating hot water inlet position of heat exchanger 1 heat supply hot water temperature sensor 8 is installed.Cold junction temperature sensor 5, medium temperature sensor 6, hot-side temperature sensor 7 and heat supply hot water temperature sensor 8 all adopt PT100 high-precision thermal resistance sensor.Heat supply hot water temperature sensor 8 gathers the central heating system hot water temperature, is used for calculating the required hot water flow of intensification heat exchange.Cold junction temperature sensor 5, medium temperature sensor 6, hot-side temperature sensor 7 gathers respectively the sump water temperature of position.Cold junction temperature sensor 5, medium temperature sensor 6, the data of hot-side temperature sensor 7 and heat supply hot water temperature sensor 8 are delivered to independent sump water temperature controller 10, by determining pond temperature and temperature homogeneity after the analysis-by-synthesis.Controller 10 compares the target temperature of real time temperature and setting, and carries out Decision Control according to the control algolithm of storage.Controller 10 is heated by controlled circulation water pump 3 realization nutrient solutions, and is made uniformity of temperature profile by the switching frequency of control magnetic valve 2 and the control of dutycycle realization heat exchange amount.
As shown in Figure 2, cold junction temperature sensor 5, medium temperature sensor 6, hot-side temperature sensor 7 and heat supply hot water temperature sensor 8 are that the d. c. voltage signal that converts 0-5V to by corresponding temperature transmitter 13,14,15,16 behind the signal of telecommunication is delivered to analog-digital converter 17 with the temperature transition of position.Analog-digital converter 17 has the multichannel selection function, is transported to single-chip microcomputer 11 and realizes obtaining of multichannel temperature data thereby can be successively convert the temperature voltage signal of 4 passages to data signal.The target temperature that 4 temperature datas that single-chip microcomputer 11 will obtain are preserved in memory 12 carries out computing and decision-making by the control algolithm of setting, respectively by solenoid control relay 18, thereby the magnetic valve 2 shown in 19 couples of Fig. 1 of water pump control relay institute and water circulating pump 3 are controlled realization to the control of water temperature.The user can arrange by 22 pairs of target temperatures of keyboard, can observe by LCDs 21 working status parameter such as each warm spot temperature.Bus transceiver 20 is used for carrying out exchanges data with control bus as EBI, thereby realizes communicating by letter with central computer.
As shown in Figure 3, central control computer 24 adopts industrial computer, and control bus 26 adopts the RS485 bus.Central control computer 24 carries out exchanges data by bus transceiver 25 and control bus, thereby realizes and the communicating by letter of each independent water temperature regulater 10.Every platform independent water temperature regulater has independent unique address, when certain independent water temperature regulater is received the query statement that central control computer sends, unanimously then current temperature data and working status parameter are returned to central control computer such as the destination address in self address and instruction.Regularly each independent water temperature regulater realization of poll is to the monitoring of all independent water temperature regulaters successively according to each independent water temperature regulater address thereby central control computer adopts this mode, and the user can see temperature conditions and the duty in all ponds of growing seedlings on the display of central control computer 24.On the other hand, the user can arrange by the running parameters such as control target temperature to arbitrary pond of growing seedlings on central control computer 24.
Claims (6)
1. concentrating type tobacco floating seed rearing pond water temperature control system, comprise external heat switch type pond heating apparatus, independent sump water temperature controller, control bus and central control computer, it is characterized in that: described independent sump water temperature controller is realized the temperature in the pond of growing seedlings is controlled by controlling described external heat switch type pond heating apparatus, and described control bus links to each other a plurality of independent sump water temperature controllers with described central control computer.
2. concentrating type tobacco floating seed rearing according to claim 1 pond water temperature control system, it is characterized in that: described external heat switch type pond heating apparatus comprises heat exchanger, magnetic valve, water circulating pump and circulating line, described external heat switch type pond heating apparatus is installed in beyond the nursery pond, described water circulating pump makes the pool inner water of growing seedlings enter heat exchanger and form closed circulation by described circulating line, and described heat exchanger is connected with outside heating system and opens and closes by the described outside heating system of described solenoid control.
3. concentrating type tobacco floating seed rearing according to claim 2 pond water temperature control system, it is characterized in that: described independent sump water temperature controller obtains temperature information by being installed in a plurality of temperature sensors that reach on the hot water pipeline in the nursery pond, and makes up the action realization to the control of water temperature by the described magnetic valve of temperature information FEEDBACK CONTROL and the water circulating pump that obtains.
4. concentrating type tobacco floating seed rearing according to claim 3 pond water temperature control system, it is characterized in that: described independent sump water temperature controller is provided with control appliance, transceiver and human-computer interaction device, can independently control the single sump water temperature of growing seedlings by the human-computer interaction device, be connected with control bus by transceiver a plurality of independent sump water temperature controllers and described central control computer are connected to form the concentrating type control system.
5. concentrating type tobacco floating seed rearing according to claim 1 pond water temperature control system, it is characterized in that: described control bus adopts the RS485 bus.
6. concentrating type tobacco floating seed rearing according to claim 1 pond water temperature control system, it is characterized in that: described central control computer adopts industrial computer, described central control computer communicates by described control bus and independent sump water temperature controller, and independent sump water temperature controller feeds back to described central control computer with the water temperature of nursery pond.
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| CN201310270337.XA CN103299892B (en) | 2013-07-01 | 2013-07-01 | Cluster-type water temperature control system for floating tobacco seedling growing pond |
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| CN201310270337.XA CN103299892B (en) | 2013-07-01 | 2013-07-01 | Cluster-type water temperature control system for floating tobacco seedling growing pond |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105830896A (en) * | 2016-04-06 | 2016-08-10 | 上海海濯农业科技有限公司 | Temperature control method for water culture device |
| CN107372077A (en) * | 2017-06-30 | 2017-11-24 | 深圳前海弘稼科技有限公司 | Method and device for controlling temperature of nutrient solution |
| CN110710394A (en) * | 2019-10-25 | 2020-01-21 | 山东大学 | Visual high flux plant cultivation system of root system |
Citations (5)
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| BG96052A (en) * | 1992-03-13 | 1996-04-30 | Inst Fiziol Na Rastenijata Aka | Nutritive solution for oriental tobacco growing and method for its application |
| CN102687661A (en) * | 2012-05-23 | 2012-09-26 | 彭细桥 | Tobacco floating-seedling strong seedling cultivation system |
| CN102845264A (en) * | 2012-10-12 | 2013-01-02 | 长沙瑞和数码科技有限公司 | Tobacco floating seedling strong seedling cultivation warming system |
| CN202873442U (en) * | 2012-08-07 | 2013-04-17 | 湖南省烟草公司郴州市公司 | Double-circulation heat supply system for tobacco seedling raising workshop floating tank |
| CN203378371U (en) * | 2013-07-01 | 2014-01-08 | 湖南农业大学 | Cluster-type nursery pond water temperature control system |
-
2013
- 2013-07-01 CN CN201310270337.XA patent/CN103299892B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BG96052A (en) * | 1992-03-13 | 1996-04-30 | Inst Fiziol Na Rastenijata Aka | Nutritive solution for oriental tobacco growing and method for its application |
| CN102687661A (en) * | 2012-05-23 | 2012-09-26 | 彭细桥 | Tobacco floating-seedling strong seedling cultivation system |
| CN202873442U (en) * | 2012-08-07 | 2013-04-17 | 湖南省烟草公司郴州市公司 | Double-circulation heat supply system for tobacco seedling raising workshop floating tank |
| CN102845264A (en) * | 2012-10-12 | 2013-01-02 | 长沙瑞和数码科技有限公司 | Tobacco floating seedling strong seedling cultivation warming system |
| CN203378371U (en) * | 2013-07-01 | 2014-01-08 | 湖南农业大学 | Cluster-type nursery pond water temperature control system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105830896A (en) * | 2016-04-06 | 2016-08-10 | 上海海濯农业科技有限公司 | Temperature control method for water culture device |
| CN107372077A (en) * | 2017-06-30 | 2017-11-24 | 深圳前海弘稼科技有限公司 | Method and device for controlling temperature of nutrient solution |
| CN107372077B (en) * | 2017-06-30 | 2020-04-17 | 深圳春沐源控股有限公司 | Method and device for controlling temperature of nutrient solution |
| CN110710394A (en) * | 2019-10-25 | 2020-01-21 | 山东大学 | Visual high flux plant cultivation system of root system |
| CN110710394B (en) * | 2019-10-25 | 2021-07-30 | 山东大学 | Visual high flux plant cultivation system of root system |
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