CN110710399B - Greenhouse based on PLC temperature automatic control - Google Patents
Greenhouse based on PLC temperature automatic control Download PDFInfo
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- CN110710399B CN110710399B CN201911130511.4A CN201911130511A CN110710399B CN 110710399 B CN110710399 B CN 110710399B CN 201911130511 A CN201911130511 A CN 201911130511A CN 110710399 B CN110710399 B CN 110710399B
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- greenhouse
- heater
- heating
- water
- temperature
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/14—Greenhouses
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
- A01C23/04—Distributing under pressure; Distributing mud; Adaptation of watering systems for fertilising-liquids
- A01C23/042—Adding fertiliser to watering systems
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/246—Air-conditioning systems
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/247—Watering arrangements
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/02—Methods or installations for obtaining or collecting drinking water or tap water from rain-water
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Abstract
The invention discloses a greenhouse based on PLC temperature automatic control, when the greenhouse is heated, a PLC controller is constructed to enable an ith heater to stop heating an (i + 1) th heater while the ith heater heats the greenhouse, the (i + 1) th heater starts heating while the ith heater stops heating the greenhouse, and each heater is intermittently heated by PLC control, wherein i is an integer which is more than or equal to and less than the number of the heaters; and when the temperature difference between the temperature sensor at the position between the two adjacent heaters and the temperature sensor at the position of the heater is larger than a set threshold value, the PLC controller can also control the heater to perform blowing action, so that the temperature difference in the greenhouse can be effectively reduced to be overlarge, the uniformity of the temperature in the greenhouse is ensured, and when the greenhouse is heated, an intermittent heating mode is adopted, so that the overhigh temperature at the heater is prevented, the air flow in the greenhouse is convenient to flow, and the temperature control effect of the greenhouse is improved.
Description
Technical Field
The invention relates to the technical field of agricultural greenhouses, in particular to a greenhouse based on PLC temperature automatic control.
Background
Along with the continuous development of green house technique and wisdom agriculture, the big-arch shelter is also more and more intelligent, and temperature, light line lamp etc. in the big-arch shelter generally can the automatic control canopy at present. However, for a large greenhouse, when the temperature in the greenhouse is generally heated, because the heaters are generally arranged at intervals, the heaters arranged at intervals are generally far away from each other, and the airflow in the greenhouse is static, and good flow is difficult to realize, so that the temperature near the heaters is obviously higher than the position far away from the heaters, the uniformity of the temperature in the greenhouse is poor, the problem that the temperature difference phenomenon is difficult to solve due to the feedback control of the common temperature sensor, and even if the temperature sensor is not installed at the proper position, the temperature at the heaters is too high, so that plants at the heaters are thermally damaged, and the like, can be solved.
Therefore, the invention provides a greenhouse based on PLC temperature automatic control, which aims to solve the problems in the background technology.
Disclosure of Invention
The invention aims to provide a greenhouse based on PLC temperature automatic control, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a greenhouse based on PLC temperature automatic control comprises a bottom support, an arc top support and a mounting support, wherein the upper end of the bottom support is provided with the arc top support protruding upwards, the bottom support is also provided with the mounting support along the length extension direction of the greenhouse, and the greenhouse temperature automatic control system is characterized in that a plurality of heaters for heating the greenhouse are arranged on the lower end face of the mounting support at intervals in an array mode, a water spraying assembly is arranged on the mounting support and located right above the heaters, nozzles facing different directions are arranged on the water spraying assembly, and temperature sensors are arranged in the middle of two adjacent heaters and in the heaters on the mounting support; the greenhouse heating system is characterized by further comprising a PLC controller which is respectively in control connection with the temperature sensor and the heaters, when the greenhouse is heated, the PLC controller is set to enable the (i + 1) th heater to stop heating while the (i) th heater heats the greenhouse, the (i + 1) th heater starts heating while the (i) th heater stops heating the greenhouse, and each heater is controlled by the PLC to perform intermittent heating, wherein i is an integer which is more than or equal to and less than the number of the heaters; and is
When the temperature difference between the temperature sensor at the position between the two adjacent heaters and the temperature sensor at the position of the heater is larger than a set threshold value, the PLC controller can also control the heater to perform blowing action.
Further, as preferred, the heater includes footstock, heating plate and subassembly of blowing, wherein, the fixed heating plate that is provided with the cylinder structure of lower extreme of footstock, the heating plate be provided with the venthole that the spiral was arranged and was seted up all around, the heating plate be provided with all around the subassembly of blowing.
Further, as preferred, the subassembly of blowing includes horizontal blowing pipe and vertical blowing pipe, horizontal blowing pipe level is fixed the upper end outside of heating plate, the fixed vertical blowing pipe that is provided with of lower extreme side of horizontal blowing pipe, vertical blowing pipe is down or the slope sets up downwards.
Further, as preferred, the bottom of heating plate is fixed on the support, still be provided with the cyclone on the support, be provided with the cyclone in the cyclone, the end of giving vent to anger of cyclone is towards the heating plate sets up.
Further, preferably, a blowing fan is arranged above the horizontal blowing pipe.
Further, as preferred, one side of this big-arch shelter still is provided with the storage water tank that is located the underground, a plurality of infiltration hole has been seted up to the top equidistance of storage water tank.
Further, as preferred, one side on the top of storage water tank is provided with the inlet tube, the rear side of storage water tank is connected with the water pipe, the immersible pump is installed to the bottom of the inner wall of storage water tank, the rear side of water pipe is connected with the irrigation basin.
Preferably, a strainer is disposed inside the water penetration hole.
Further, as preferred, the one end of water pipe is connected with the immersible pump, the other end of water pipe is connected with the inboard of irrigation basin.
Further, preferably, the water spray assembly is also connected with the submersible pump.
Compared with the prior art, the invention has the beneficial effects that:
1. when the greenhouse is heated, the PLC is configured to enable the ith heater to stop heating the (i + 1) th heater while the ith heater heats the greenhouse, the (i + 1) th heater starts heating while the ith heater stops heating the greenhouse, and each heater is controlled by the PLC to perform intermittent heating, wherein i is an integer which is more than or equal to and less than the number of the heaters; and when the temperature difference between the temperature sensor at the position between the two adjacent heaters and the temperature sensor at the position of the heater is larger than a set threshold value, the PLC controller can also control the heaters to perform blowing action, so that the problem of overlarge temperature difference in the greenhouse can be effectively reduced, the uniformity of the temperature in the greenhouse is ensured, and during heating, an intermittent heating mode is adopted, so that the overhigh temperature at the heater is prevented, the airflow in the greenhouse is convenient to flow, and the temperature control effect of the greenhouse is improved.
2. According to the invention, through the water storage tank, the submersible pump, the spray header, the water pipe, the water seepage hole, the water tank and the water strainer, rainwater can be conveniently collected and irrigated on plants, fertilizers can be conveniently irrigated on the plants, the plants can be rapidly cooled, and the requirements of irrigation and water spraying can be met.
Drawings
FIG. 1 is a schematic structural diagram of a greenhouse based on PLC temperature automatic control;
FIG. 2 is a schematic structural diagram of a heater in a greenhouse based on PLC temperature automatic control;
fig. 3 is a schematic structural diagram of a water storage tank in a greenhouse based on automatic temperature control of a PLC.
Detailed Description
Referring to fig. 1 to 3, in the embodiment of the invention, a greenhouse based on PLC temperature automatic control includes a bottom bracket 1, an arc top bracket 2 and a mounting bracket 7, wherein the upper end of the bottom bracket is provided with the arc top bracket 2 protruding upward, and the bottom bracket is further provided with the mounting bracket 7 along the length extension direction of the greenhouse, and is characterized in that a plurality of heaters 3 for heating the greenhouse are arranged on the lower end surface of the mounting bracket at intervals in an array manner, a water spraying assembly 4 is arranged on the mounting bracket right above the heaters, nozzles 5 facing different directions are arranged on the water spraying assembly, and a temperature sensor 6 is arranged on the mounting bracket between two adjacent heaters and on each heater; the greenhouse heating system is characterized by further comprising a PLC controller which is respectively in control connection with the temperature sensor and the heaters, when the greenhouse is heated, the PLC controller is set to enable the (i + 1) th heater to stop heating while the (i) th heater heats the greenhouse, the (i + 1) th heater starts heating while the (i) th heater stops heating the greenhouse, and each heater is controlled by the PLC to perform intermittent heating, wherein i is an integer which is more than or equal to 1 and less than the number of the heaters; and when the temperature difference between the temperature sensor at the middle position of the two adjacent heaters and the temperature sensor 6 at the position of the heaters is larger than a set threshold value, the PLC controller can also control the heaters 3 to perform blowing action.
In this embodiment, the heater 3 includes footstock 8, heating plate 15 and the subassembly of blowing, wherein, the fixed heating plate 15 that is provided with the cylinder structure of lower extreme of footstock, the heating plate be provided with the venthole 14 that the helical row seted up all around, the heating plate be provided with all around the subassembly of blowing.
In a preferred embodiment, the blowing assembly includes a horizontal blowing pipe 10 and a vertical blowing pipe 12, the horizontal blowing pipe is horizontally fixed to the outer side of the upper end of the heating plate, the vertical blowing pipe is fixedly provided to the lower end side of the horizontal blowing pipe, and the vertical blowing pipe is arranged downward or obliquely downward.
The bottom of the heating plate is fixed on a support 16, a cyclone barrel 13 is further arranged on the support, a cyclone 11 is arranged in the cyclone barrel, and the air outlet end of the cyclone is arranged towards the heating plate.
And a blowing fan 9 is arranged above the horizontal blowing pipe. One side of the greenhouse is also provided with a water storage tank 17 which is arranged underground, and a plurality of water seepage holes 20 are formed in the top end of the water storage tank 17 at equal intervals. One side on the top of storage water tank 17 is provided with inlet tube 18, the rear side of storage water tank 17 is connected with water pipe 19, immersible pump 22 is installed to the bottom of the inner wall of storage water tank 17, the rear side of water pipe 19 is connected with irrigation water tank 21.
And a water filtering net is arranged on the inner side of the water seepage hole 13. One end of the water pipe is connected with the submersible pump, and the other end of the water pipe is connected with the inner side of the irrigation water tank. The water spray assembly 4 is also connected with the submersible pump.
When the greenhouse is heated, the PLC is configured to enable the ith heater to stop heating the (i + 1) th heater while the ith heater heats the greenhouse, the (i + 1) th heater starts heating while the ith heater stops heating the greenhouse, and each heater is controlled by the PLC to perform intermittent heating, wherein i is an integer which is more than or equal to and less than the number of the heaters; and when the temperature difference between the temperature sensor at the position between the two adjacent heaters and the temperature sensor at the position of the heater is larger than a set threshold value, the PLC controller can also control the heaters to perform blowing action, so that the problem of overlarge temperature difference in the greenhouse can be effectively reduced, the uniformity of the temperature in the greenhouse is ensured, and during heating, an intermittent heating mode is adopted, so that the overhigh temperature at the heater is prevented, the airflow in the greenhouse is convenient to flow, and the temperature control effect of the greenhouse is improved. According to the invention, through the water storage tank, the submersible pump, the spray header, the water pipe, the water seepage hole, the water tank and the water strainer, rainwater can be conveniently collected and irrigated on plants, fertilizers can be conveniently irrigated on the plants, the plants can be rapidly cooled, and the requirements of irrigation and water spraying can be met.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (4)
1. A greenhouse based on PLC temperature automatic control comprises a bottom support (1), an arc top support (2) and a mounting support (7), wherein the upper end of the bottom support is provided with the arc top support (2) protruding upwards, and the mounting support (7) along the length extension direction of the greenhouse is further arranged on the bottom support, and the greenhouse temperature automatic control system is characterized in that a plurality of heaters (3) for heating the greenhouse are arranged on the lower end face of the mounting support at intervals in an array manner, a water spraying assembly (4) is arranged on the mounting support and located right above the heaters, nozzles (5) facing different directions are arranged on the water spraying assembly, and temperature sensors (6) are arranged on the mounting support and located between two adjacent heaters and on the mounting support; the greenhouse heating system is characterized by further comprising a PLC controller which is respectively in control connection with the temperature sensor and the heaters, when the greenhouse is heated, the PLC controller is set to enable the (i + 1) th heater to stop heating while the (i) th heater heats the greenhouse, the (i + 1) th heater starts heating while the (i) th heater stops heating the greenhouse, and each heater is controlled by the PLC to perform intermittent heating, wherein i is an integer which is more than or equal to 1 and less than the number of the heaters; when the temperature difference between the temperature sensor at the middle position of the two adjacent heaters and the temperature sensor (6) at the position of the heater is larger than a set threshold value, the PLC controller can also control the heater (3) to perform blowing action; the heater (3) comprises a top seat (8), a heating plate (15) and a blowing assembly, wherein the heating plate (15) with a cylindrical structure is fixedly arranged at the lower end of the top seat, air outlet holes (14) which are spirally arranged are formed in the periphery of the heating plate, and the blowing assembly is arranged in the periphery of the heating plate;
the blowing assembly comprises a horizontal blowing pipe (10) and a vertical blowing pipe (12), the horizontal blowing pipe is horizontally fixed on the outer side of the upper end of the heating plate, the vertical blowing pipe is fixedly arranged on the lower end side of the horizontal blowing pipe, and the vertical blowing pipe is arranged downwards or obliquely downwards;
the bottom of the heating plate is fixed on a support (16), a cyclone cylinder (13) is further arranged on the support, a cyclone (11) is arranged in the cyclone cylinder, and the air outlet end of the cyclone is arranged towards the heating plate;
a blowing fan (9) is arranged above the horizontal blowing pipe;
one side of the greenhouse is also provided with a water storage tank (17) which is positioned underground, and the top end of the water storage tank (17) is equidistantly provided with a plurality of water seepage holes (20);
one side on the top of storage water tank (17) is provided with inlet tube (18), the rear side of storage water tank (17) is connected with water pipe (19), immersible pump (22) are installed to the bottom of the inner wall of storage water tank (17), the rear side of water pipe (19) is connected with irrigation basin (21).
2. The greenhouse based on PLC temperature automatic control as claimed in claim 1, characterized in that the inside of the weep hole (13) is provided with a water strainer.
3. The greenhouse based on PLC temperature automatic control of claim 1, characterized in that one end of the water pipe is connected with a submersible pump, and the other end of the water pipe is connected with the inner side of an irrigation water tank.
4. The greenhouse based on PLC temperature automatic control as claimed in claim 1, characterized in that the water spray assembly (4) is further connected with the submersible pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911130511.4A CN110710399B (en) | 2019-11-18 | 2019-11-18 | Greenhouse based on PLC temperature automatic control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911130511.4A CN110710399B (en) | 2019-11-18 | 2019-11-18 | Greenhouse based on PLC temperature automatic control |
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| Publication Number | Publication Date |
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| CN110710399A CN110710399A (en) | 2020-01-21 |
| CN110710399B true CN110710399B (en) | 2021-09-17 |
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| CN201911130511.4A Active CN110710399B (en) | 2019-11-18 | 2019-11-18 | Greenhouse based on PLC temperature automatic control |
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| CN206260416U (en) * | 2016-12-13 | 2017-06-20 | 建德市红群农业科技有限公司 | A kind of intelligent greenhouse |
| CN108849085A (en) * | 2018-05-21 | 2018-11-23 | 台州创投环保科技有限公司 | It is a kind of it is energy-efficient can self-cleaning photovoltaic agricultural greenhouse |
| CN109496617A (en) * | 2018-12-29 | 2019-03-22 | 辽东学院 | PLC controls seedling cultivation greenhouse automatic temperature control |
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2019
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| JPH11123026A (en) * | 1997-10-21 | 1999-05-11 | Nippon Mizushori Giken:Kk | Green house for cherry |
| CN201752195U (en) * | 2010-08-03 | 2011-03-02 | 李泮禄 | Greenhouse heating temperature raiser |
| CN103105816A (en) * | 2012-12-28 | 2013-05-15 | 上海都市绿色工程有限公司 | Programmable logic controller (PLC) circuit system and control method used in greenhouse high pressure spray control |
| CN203492480U (en) * | 2013-09-11 | 2014-03-26 | 中国农业大学 | Emergency hot wind heating and CO2 fertilizing device used for solar greenhouse |
| CN203646205U (en) * | 2014-01-18 | 2014-06-18 | 长江大学 | Movable warming greenhouse for field crop high-temperature tolerance evaluation |
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| CN110710399A (en) | 2020-01-21 |
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