CN109426280A - A kind of research greenhouse temperature control system - Google Patents
A kind of research greenhouse temperature control system Download PDFInfo
- Publication number
- CN109426280A CN109426280A CN201710786231.3A CN201710786231A CN109426280A CN 109426280 A CN109426280 A CN 109426280A CN 201710786231 A CN201710786231 A CN 201710786231A CN 109426280 A CN109426280 A CN 109426280A
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- China
- Prior art keywords
- unit
- temperature
- dry ice
- signal
- illumination
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
- G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
- G05D23/1931—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of one space
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Greenhouses (AREA)
Abstract
The present invention provides a kind of research greenhouse temperature control system, including control unit, temperature collecting cell, dry ice sprayer unit, illumination heating unit, ventilation unit, blowing unit, greenhouse is divided into several regions, it includes at least a temperature collecting cell in each region and illumination heats up unit, dry ice sprayer unit and blowing unit are set in each region or public one group of multiple regions；Temperature in the real-time pickup area of temperature collecting cell, the dry ice sprayer unit is cooled down by dry ice Sprayable, the illumination heating unit is heated up by illumination form, the ventilation unit is used for the air circulation of greenhouse and canopy outer room, circulation of the blowing unit for air in greenhouse, described control unit are used to control the work of illumination heating unit, dry ice sprayer unit, ventilation unit, blowing unit.
Description
Technical field
The present invention relates to a kind of temperature control technology, especially a kind of research greenhouse temperature control system.
Background technique
Traditional temperature control is that thermometer is hung in vinyl house, knows the reality in greenhouse by reading temperature value
Border temperature.It is compared further according to existing temperature with set temperature, looks at that temperature is excessively high or too low.To greenhouse if too low
Heating treatment is carried out, higher position is crossed and cooling processing is carried out to greenhouse.These operations all carry out in the manual case, expend a large amount of
Manpower and material resources have been far from satisfying the needs of modern agricultural production.
Summary of the invention
It is an object of the invention to a kind of research greenhouse temperature control system, including control unit, temperature collecting cell,
Dry ice sprayer unit, illumination heat up unit, ventilation unit, blowing unit, and greenhouse is divided into several regions, in each region extremely
It less include a temperature collecting cell and an illumination heating unit, dry ice sprayer unit and blowing unit are set to each region
In or public one group of multiple regions；Temperature in the real-time pickup area of temperature collecting cell, the dry ice sprayer unit pass through
Dry ice Sprayable cools down, and the illumination heating unit is heated up by illumination form, and the ventilation unit is for big
The air circulation of canopy and canopy outer room, circulation of the blowing unit for air in greenhouse, described control unit is for controlling light
According to the work of heating unit, dry ice sprayer unit, ventilation unit, blowing unit；The dry ice sprayer unit is spraying by dry ice
Form cools down；Described control unit includes signal receiving subelement, comparing subunit, signal transmission sub-unit, wherein believing
Number receiving subelement receives the temperature signal of temperature collecting cell, and comparing subunit is used to carry out temperature signal and given threshold
Relatively and working signal signal transmission sub-unit transmission working signal is generated to dry ice sprayer unit, illumination heating unit, ventilation
Unit, blowing unit.
As a kind of improvement of above system, the signal that each temperature collecting cell is sent includes unique identification code, control
Unit processed further includes the identification subelement for identifying temperature signal identification code, and control unit further includes that coded sub-units are used for transmission
Identification code is worked out in signal, the signal receiving part of dry ice sprayer unit, illumination heating unit and blowing unit, which sets up separately, sets identification
Unit, identification send the identification code in signal, and identification code, which is matched, just starts to work.
Traditional greenhouse craft temperature control mode is replaced with full-automatic temperature control mode by the present invention, passes through temperature
Spend the heating that greenhouse is completed in acquisition, heating, cooling, ventilation, air-supply and control unit collaboration.Set more for greenhouse simultaneously
A region, includes at least a temperature collecting cell in each region and an illumination heats up unit, dry ice sprayer unit and send
Wind unit is set in each region or public one group of multiple regions, can accomplish the precise controlling to greenhouse temperature.
The present invention is described further with reference to the accompanying drawings of the specification.
Detailed description of the invention
Fig. 1 is the principle of the present invention schematic diagram.
Specific embodiment
In conjunction with Fig. 1, a kind of research greenhouse temperature elevation system, including control unit, temperature collecting cell, dry ice are spraying single
Member, illumination heating unit, blowing unit.Wherein the temperature collecting cell is for acquiring canopy temperature, illumination heating unit
Canopy temperature is increased by illumination, control unit is used to control the work of illumination heating unit, blowing unit.Furthermore the system
It further include power supply unit, for providing operating voltage for system.
Specifically, entire greenhouse is divided into several regions, different zones area may be the same or different, often
Include at least a temperature collecting cell in one region and illumination heat up unit, blowing unit be set in each region or
Public one group of multiple regions.
Temperature information in the real-time pickup area of temperature collecting cell simultaneously feeds back to control unit.The chip that the unit uses
For LM35CZ chip, covering temperature can achieve -40 DEG C~110 DEG C, and measured temperature is every to increase by 1 DEG C, and output voltage signal mentions
High 10mv.An amplifying circuit is connected in LM35CZ chip output, for amplifying LM35CZ chip signal output.
Dry ice sprayer unit includes nozzle, carbon dioxide ice maker, the dry ice pipeline for being connected to nozzle and carbon dioxide ice maker, Yi Jishe
Set the control valve on dry ice pipeline.The control valve is connect with control unit signal, is instructed according to temperature reception control unit
Adjust dry ice flow.Carbon dioxide ice maker can be located at outside greenhouse.
The illumination heating unit includes light source, and the intensity of illumination of light source has control unit control.It at least wraps in each region
Include a light source.The situation too low for the different community domain local temperature in a region, the illumination heating unit of the zonule
It can be controlled and be opened with independent controlled unit, and not other light illuminating units with the region work at the same time.
Ventilation unit can be the ventilation fan being arranged on greenhouse wall, for adjusting each component ratio of gas in canopy, make
Obtain the gaseous environment close to outside canopy.Although dry ice can cool down rapidly, CO in canopy can be made2Concentration increases, especially at night
Deleterious effect is generated to canopy implants, it is therefore desirable to which a ventilation unit changes gaseous environment in canopy.
Blowing unit can be pressure fan, and setting purpose is in order to enable a certain region is not due to adjacent area temperature variation
So that temperature rises too high or declines too low, by pressure fan, accelerate the flowing of gas in canopy, so that temperature of shed is maintained at one
Under conditions of constant.The blower setting gear, in low-grade location when commonly used, air-supply is essentially natural wind, works as extreme condition
Under, it may be at high tap position, gas in quick convection current canopy.
Control unit controls different dry ice sprayer units, illumination heating unit, air-supply list according to the temperature in each region
Member and ventilation unit work.Control unit includes signal receiving subelement, comparing subunit, signal transmission sub-unit.Signal connects
Receive the temperature signal of the different zones of acquisition of the subelement for receiving temperature collecting cell；Comparing subunit is for believing temperature
It number is compared with given threshold, judges whether current zone temperature is in normal；Signal transmission sub-unit sends a signal to dry
Ice sprayer unit, illumination heating unit, blowing unit and ventilation unit.Wherein since region is several, temperature acquisition is single
Member should add during transmitting signal can be with the encoded signal of identification region to control unit, therefore control unit is also answered
Including an identification subelement, the temperature signal of different zones is identified.Control unit further includes that coded sub-units are used to believe to transmission
Identification code is worked out in number.Since dry ice sprayer unit, illumination heating unit and blowing unit may also have several, at this
The one identification subelement of signal receiving portion setting of two units, it is therefore an objective to which control unit is sprayed when sending signal towards all dry ice
Mist unit, blowing unit, and include identification code in the transmission signal, but not each dry ice sprayer unit, illumination heating list
Member, blowing unit work, therefore are arranged in dry ice sprayer unit, illumination heating unit, blowing unit identification subelement identification
The identification code in signal is sent, after only identification code is matched successfully, dry ice sprayer unit, blowing unit are just started to work.By
It is not that each region has in dry ice sprayer unit, blowing unit, so the identification code of the two recognition unit can identify one
Sets of numbers section.When the temperature of temperature collecting cell transmission is in a reasonable value, control unit then issues stop signal requirement
Dry ice sprayer unit, illumination heating unit stop working, but might not stop the work of ventilation unit and blowing unit, comprehensive
Close the work considered and stop ventilation unit and blowing unit in canopy after other regional temperatures again.
The working principle of the invention is: the situation to cool down for needs, and temperature collecting cell acquires the temperature in one's respective area
Degree sends control unit to, and whether control unit needs dry ice sprayer unit, ventilation unit, blowing unit work by multilevel iudge
Make, if temperature is more than preset threshold value, further judges that dry ice sprayer unit, ventilation unit, blowing unit work it
Between which unit need work, and send signal by its work.The dry ice sprayer unit, ventilation unit, blowing unit pass through
The work of collaboration, to maintain temperature of shed to be in suitable for plant growth numerical value.So-called collaboration is exactly according to different zones temperature
Comprehensive consideration is spent, such as when the temperature in the adjacent region D, E is more than pre-set threshold value, but remaining adjacent A, B, C, F
Region is the dry ice sprayer unit mist cooling that the region D, E matches at this time, when temperature drops to suitable plant more than threshold value
When growth, stop spraying.It is contemplated that the adjacent region A, B, C, F may due to the spraying influence of dry ice and temperature reduce,
Therefore the corresponding blowing unit in the region A, B, C, F still works, it is contemplated that CO caused by dry ice cooling2Gas, thus it is logical
Wind unit is still in working condition.Until the ambient condition that the temperature of each region maintains suitable plant growth in greenhouse stops
The only work of blowing unit and ventilation unit.
For the situation that needs heat up, the temperature in temperature collecting cell acquisition one's respective area sends control unit to, controls
Whether unit needs illumination heating unit, blowing unit work by multilevel iudge, if temperature is more than preset threshold value,
Further judge which unit needs work between illumination heating unit, blowing unit work, and sends signal by its work.Institute
Illumination heating unit, blowing unit are stated by the work of collaboration, grows numerical value to maintain temperature of shed to be in a suitable for plant.Institute
The collaboration of meaning is exactly considered according to different zones are temperature integrated, such as when the temperature in the adjacent region D, E is more than pre-set
Threshold value, but remaining adjacent region A, B, C, F is lower than threshold value, the illumination heating unit work that the region D, E matches at this time
It heats up, when temperature is increased to suitable plant growth, stops working.It is contemplated that the adjacent region A, B, C, F may be by
In illumination heating unit influence and temperature increases, therefore the corresponding blowing unit in the region A, B, C, F still works.Until big
The temperature of each region maintains the work of the out-of-blast unit of ambient condition of suitable plant growth in canopy.
Claims (7)
1. a kind of research greenhouse temperature control system, including control unit, temperature collecting cell, dry ice sprayer unit, illumination
Heat up unit, ventilation unit, blowing unit, which is characterized in that greenhouse is divided into several regions, includes at least in each region
One temperature collecting cell and an illumination heating unit, dry ice sprayer unit and blowing unit are set in each region or more
Public one group of a region；
Temperature in the real-time pickup area of temperature collecting cell,
The dry ice sprayer unit is cooled down by dry ice Sprayable,
The illumination heating unit is heated up by illumination form,
The ventilation unit is used for the air circulation of greenhouse and canopy outer room,
Circulation of the blowing unit for air in greenhouse,
Described control unit is used to control the work of illumination heating unit, dry ice sprayer unit, ventilation unit, blowing unit；
Described control unit includes signal receiving subelement, comparing subunit, signal transmission sub-unit, wherein
Signal receiving subelement receives the temperature signal of temperature collecting cell,
Temperature signal for being compared with given threshold and generating working signal by comparing subunit
Signal transmission sub-unit sends working signal to dry ice sprayer unit, illumination heating unit, ventilation unit, blowing unit.
2. system according to claim 1, which is characterized in that
The signal that each temperature collecting cell is sent includes unique identification code,
Control unit further includes the identification subelement for identifying temperature signal identification code,
Control unit further includes that coded sub-units are used to work out identification code into transmission signal,
The signal receiving part of dry ice sprayer unit, illumination heating unit and blowing unit, which sets up separately, sets identification subelement, and identification is sent
Identification code in signal, identification code, which is matched, just starts to work.
3. system according to claim 1 or 2, which is characterized in that the temperature reducing unit include nozzle, carbon dioxide ice maker,
It is connected to the dry ice pipeline of nozzle and carbon dioxide ice maker, and the control valve being arranged on dry ice pipeline；The control valve and control
Cell signal connection instructs adjustment dry ice flow according to control unit.
4. system according to claim 1 or 2, which is characterized in that the illumination heating unit includes light source, the light source
Intensity of illumination is controlled by control unit.
5. system according to claim 1 or 2, which is characterized in that the temperature collecting cell uses LM35CZ chip,
Covering temperature is -40 DEG C~110 DEG C, and measured temperature is every to increase by 1 DEG C, and output voltage signal improves 10mv.
6. system according to claim 5, which is characterized in that amplifying circuit is arranged in the LM35CZ chip output.
7. system according to claim 1 or 2, which is characterized in that it is described to send sub-unit that different air-supply gears are set, it is each
Gear air output is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710786231.3A CN109426280A (en) | 2017-09-04 | 2017-09-04 | A kind of research greenhouse temperature control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710786231.3A CN109426280A (en) | 2017-09-04 | 2017-09-04 | A kind of research greenhouse temperature control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109426280A true CN109426280A (en) | 2019-03-05 |
Family
ID=65513422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710786231.3A Pending CN109426280A (en) | 2017-09-04 | 2017-09-04 | A kind of research greenhouse temperature control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109426280A (en) |
-
2017
- 2017-09-04 CN CN201710786231.3A patent/CN109426280A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190305 |