CN109028448A - Agricultural facility net for air-source heat pump units VAV control device and control method - Google Patents
Agricultural facility net for air-source heat pump units VAV control device and control method Download PDFInfo
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- CN109028448A CN109028448A CN201810771137.5A CN201810771137A CN109028448A CN 109028448 A CN109028448 A CN 109028448A CN 201810771137 A CN201810771137 A CN 201810771137A CN 109028448 A CN109028448 A CN 109028448A
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- air
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Greenhouses (AREA)
Abstract
The present invention provides a kind of agricultural facility net for air-source heat pump units VAV control device and control methods.The agricultural facility net for air-source heat pump units VAV control device includes modular air source heat pump unit, header pipe, VAV control node, n air-valve driving node, n air-valve, n greenhouse；Wherein, modular air source heat pump unit is controlled by heat pump module controller, wherein n positive integer；Modular air source heat pump unit is connected to the header pipe, and the header pipe is respectively communicated with the n air-valves, and each air-valve is connected to a greenhouse, blows to realize to the greenhouse；The VAV control node is wirelessly connected the n air-valve driving nodes respectively, and each air-valve driving node is used to control the air quantity of an air-valve.The present invention also provides a kind of control methods based on agricultural facility net for air-source heat pump units VAV control device.
Description
Technical field
The invention belongs to agricultural facility net for air-source heat pump units technical fields, more particularly to a kind of agricultural facility air-source
Heat pump unit VAV control device and control method.
Background technique
The facility plastic greenhouse of the same Agricultural Park varies, quantity have have less, geographical location is concentrated with dispersion,
Using generally there are two types of solutions when heat pump air-source: first is that and configuration separately installed for each facility plastic greenhouse size is corresponding
The net for air-source heat pump units and controller of power require power supply capacity also high；Second is that using modular air source heat pump unit
All facility plastic greenhouses are uniformly controlled and are blown, do not consider facility plastic greenhouse size, caused each by (compressor chamber every take turns starting)
Facility plastic greenhouse effect has block to have slowly, results in waste of resources, the too big of vibration noise
With the development of technology of Internet of things, wireless receiving and dispatching radio-frequency technique is promoted and applied rapidly, is mainly used at present
In data acquisition, such as the transmission of TI transceiving chip CC1101 spaciousness can stablize in 300-500 meters, and have wireless awakening
The function of low-power sleep state, current power dissipation is low, not high to power reguirements；But to currently, wireless output control equipment also compares
Less, especially agricultural facility greenhouse field can save use cost, and networking network management is convenient.
In view of the above-mentioned problems, currently no effective solution has been proposed.
Summary of the invention
It is an object of the invention in view of the drawbacks of the prior art or problem, provide a kind of agricultural facility air source heat pump machine
Group VAV control device and control method.
Technical scheme is as follows: a kind of agricultural facility net for air-source heat pump units VAV control device includes module
Change net for air-source heat pump units, header pipe, VAV control node, n air-valve driving node, n air-valve, n greenhouse；Its
In, modular air source heat pump unit is controlled by heat pump module controller, wherein n positive integer；The modular air source
Heat pump unit is connected to the header pipe, and the header pipe is respectively communicated with the n air-valves, and each air-valve is connected to one
The greenhouse is blown to realize to the greenhouse；The VAV control node is wirelessly connected the n air-valve drivings respectively
Node, each air-valve driving node are used to control the air quantity of an air-valve.
Preferably, wireless receiving and dispatching custom protocol of the VAV control node based on CC1101, and the variable air rate
Control node includes controller Atmega88, radio receiving transmitting module CC1101, UNIX embedded OS, control algolithm and string
Mouthful, the controller Atmega88 and radio receiving transmitting module CC1101 is linked by spi bus, and the controller Atmega88 is
Based on what is worked under UNIX embedded OS, the heat pump module control of the serial ports and modular air source heat pump unit
Device serial ports processed is connected.
It is a kind of based on a kind of control method of agricultural facility net for air-source heat pump units VAV control device as described above,
Include the following steps:
The module heat pump unit of appropriate power is selected according to facility plastic greenhouse quantity and size, and chooses corresponding modularization heat
Pump controller；
It is 1 management array of each greenhouse distribution in the EEPROM of air-valve Variable Control node, and each facility is big
Area S1, S2 of canopy ..., Sn be stored in air-valve scheduler module EEPROM, it is then big according to respective area distributions weight
It is smallI, j is positive integer；
When initialization, the air-valve angle of each greenhouse is distributed according to itself size: αj=90 ωj, and be stored in
In EEPROM；
By wireless sending module CC1101, sent by the way of successively sending to the air-valve driving node of each greenhouse
Command frame, in which: the CC1101 of wireless VAV control node is in running order always, each greenhouse air-valve driving node
When CC1101 is flat in a dormant state；
When setting value is not achieved in the supply air temperature of some greenhouse, according to the step value adjusting air valve angle of setting increase or
Person reduces 1 step value, until air-valve fully opens or completely closes, and air-valve angle value is fed back to wireless variable air rate control
Node processed；After air-valve fully opens, heat pump unit loaded energy is requested to wireless VAV control node；When air-valve closes completely
After closing, energy is unloaded to wireless VAV control node request heat pump unit；
After wireless VAV control node receives the request of some air-valve driving node, EEPROM data are updated for it,
And feedback request gives modular heat pump generator set controller.
Preferably, wireless receiving and dispatching custom protocol of the VAV control node based on CC1101, and the wireless receipts
The rule for sending out custom protocol is as follows:
Wireless VAV control node is host, and wireless air-valve driving node is slave；Wireless VAV control node
CC1101 is in running order always, when the CC1101 of wireless air-valve driving node is flat in a dormant state, when being only waken up
Just work；
It include: start frame, order when wireless VAV control node is to sending when passing control instruction under air-valve driving node
Word, destination address word, air-valve angle-data and crc16 check word；
After air-valve driving node receives the control instruction that wireless VAV control node passes down, to wireless VAV control
Node returns to an acknowledgement frame ACK, informs condition execution instruction；
After air-valve driving node data change, it is necessary to wireless VAV control node feeding back information, update
EEPROM data；
After air-valve driving node uploads feedback information to wireless VAV control node, air-valve driving node is needed to nothing
Line VAV control node returns to an air-valve driving node acknowledgement frame, and informing has received feedback information.
Preferably, the air-valve driving node includes controller Atmega128, drive module A3977, stepper motor and volume
Code device, radio receiving transmitting module CC1101, UNIX embedded OS, air-valve angle adaptive PI adjust algorithm, the control
Device Atmega128 is connected with radio receiving transmitting module CC1101 by spi bus, the Atmega128 also with drive module A3977
It is connected, the Atmega128 is based on working under UNIX embedded OS.
Preferably, the air-valve driving node uses following adaptive PI algorithm, and includes the following steps:
It is adjusted using digital incremental PI control algolithm, stepper motor driving pulse is generated by drive module A3977, is come
The angle of adjusting air valve；
According to the optimal target of Kalman filtering, 2 k of intelligent optimization PIp、kIParameter, and it is excellent using the overall situation that leapfrogs is mixed
Change algorithm；
Entire control module is using closed-loop control, according to the order of air-valve angular adjustment come the big of adjusting air valve corner
Small, angular adjustment algorithm uses PI algorithm.
Technical solution provided by the invention has the following beneficial effects:
Agricultural facility net for air-source heat pump units VAV control device proposed by the present invention and control method are based on Internet of Things
The use of the agricultural facility net for air-source heat pump units VAV control device of net, can be improved net for air-source heat pump units and sets in agricultural
Apply the optimization ability of greenhouse application.
Detailed description of the invention
Fig. 1 is that the Internet of Things of agricultural facility net for air-source heat pump units VAV control device provided in an embodiment of the present invention is opened up
Flutter figure；
Fig. 2 is the control principle drawing of agricultural facility net for air-source heat pump units VAV control device shown in FIG. 1；
Fig. 3 is PI adaptive algorithm flow chart；
Fig. 4 is VAV control schematic diagram.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Although the step in the present invention is arranged with label, it is not used to limit the precedence of step, unless
Based on the execution of the order or certain step that specify step needs other steps, otherwise the relative rank of step is
It is adjustable.It is appreciated that term "and/or" used herein be related to and cover in associated listed item one
Person or one or more of any and all possible combinations.
As depicted in figs. 1 and 2, the embodiment of the present invention provides a kind of agricultural facility net for air-source heat pump units VAV control dress
It sets including modular air source heat pump unit, header pipe, VAV control node, n air-valve driving node, n air-valve, n
A greenhouse；Wherein, the air conditioner and heat pump unit is controlled by heat pump module controller.
Modular air source heat pump unit is connected to the header pipe, and the header pipe is respectively communicated with described in n
Air-valve, each air-valve are connected to a greenhouse, blow to realize to the greenhouse；
The VAV control node is wirelessly connected the n air-valve driving nodes, each air-valve driving section respectively
Point is for controlling the air quantity of an air-valve.
It should be noted that wireless receiving and dispatching custom protocol of the VAV control node based on CC1101, and it is described
VAV control node includes controller Atmega88, radio receiving transmitting module CC1101, UNIX embedded OS, control calculation
Method and serial ports, the controller Atmega88 and radio receiving transmitting module CC1101 are linked by spi bus, the controller
Atmega88 be based on working under UNIX embedded OS, the serial ports and modular air source heat pump unit
Heat pump module controller serial ports is connected.
As shown in Figure 3 and Figure 4, a kind of to be based on Fig. 1 and agricultural facility net for air-source heat pump units VAV control shown in Fig. 2
The control method of device includes the following steps:
The module heat pump unit of appropriate power is selected according to facility plastic greenhouse quantity and size, and chooses corresponding modularization heat
Pump controller；
It is 1 management array of each greenhouse distribution in the EEPROM of air-valve Variable Control node, and each facility is big
Area S1, S2 of canopy ..., Sn be stored in air-valve scheduler module EEPROM, it is then big according to respective area distributions weight
It is small
When initialization, the air-valve angle of each greenhouse is distributed according to itself size: αj=90 ωjAnd it is stored in
In EEPROM；
By wireless sending module CC1101, sent by the way of successively sending to the air-valve driving node of each greenhouse
Command frame, in which: the CC1101 of wireless VAV control node is in running order always, each greenhouse air-valve driving node
When CC1101 is flat in a dormant state；
When setting value is not achieved in the supply air temperature of some greenhouse, according to the step value adjusting air valve angle of setting increase or
Person reduces 1 step value, until air-valve fully opens or completely closes, and air-valve angle value is fed back to wireless variable air rate control
Node processed；After air-valve fully opens, heat pump unit loaded energy is requested to wireless VAV control node；When air-valve closes completely
After closing, energy is unloaded to wireless VAV control node request heat pump unit；
After wireless VAV control node receives the request of some air-valve driving node, EEPROM data are updated for it,
And feedback request gives modular heat pump generator set controller.
Moreover, wireless receiving and dispatching custom protocol of the VAV control node based on CC1101, and the wireless receiving and dispatching
The rule of custom protocol is as follows:
Wireless VAV control node is host, and wireless air-valve driving node is slave；Wireless VAV control node
CC1101 is in running order always, when the CC1101 of wireless air-valve driving node is flat in a dormant state, when being only waken up
Just work；
It include: start frame, order when wireless VAV control node is to sending when passing control instruction under air-valve driving node
Word, destination address word, air-valve angle-data and crc16 check word；
After air-valve driving node receives the control instruction that wireless VAV control node passes down, to wireless VAV control
Node returns to an acknowledgement frame ACK, informs condition execution instruction；
After air-valve driving node data change, it is necessary to wireless VAV control node feeding back information, update
EEPROM data；
After air-valve driving node uploads feedback information to wireless VAV control node, air-valve driving node is needed to nothing
Line VAV control node returns to an air-valve driving node acknowledgement frame, and informing has received feedback information.
For the air-valve driving node, the air-valve driving node includes controller Atmega128, drive module
A3977, stepper motor and encoder, radio receiving transmitting module CC1101, UNIX embedded OS, air-valve angle adaptive PI
Algorithm is adjusted, the controller Atmega128 is connected with radio receiving transmitting module CC1101 by spi bus, the Atmega128
Also it is connected with drive module A3977, the Atmega128 is based on working under UNIX embedded OS.
Then, the air-valve driving node uses following adaptive PI algorithm, and includes the following steps:
It is adjusted using digital incremental PI control algolithm, stepper motor driving pulse is generated by drive module A3977, is come
The angle of adjusting air valve；
According to the optimal target of Kalman filtering, 2 k of intelligent optimization PIp、kIParameter, and it is excellent using the overall situation that leapfrogs is mixed
Change algorithm, wherein optimization algorithm is as shown in Figure 3；
As shown in figure 4, entirely control module is using closed-loop control, according to air-valve angular adjustment order come adjusting air valve
The size of corner, angular adjustment algorithm use PI algorithm.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (6)
1. a kind of agricultural facility net for air-source heat pump units VAV control device, it is characterised in that: including modular air source heat
Pump assembly, header pipe, VAV control node, n air-valve driving node, n air-valve, n greenhouse；Wherein, the module
Change net for air-source heat pump units to be controlled by heat pump module controller, wherein n positive integer；
Modular air source heat pump unit is connected to the header pipe, and the header pipe is respectively communicated with the n air-valves,
Each air-valve is connected to a greenhouse, blows to realize to the greenhouse；
The VAV control node is wirelessly connected the n air-valve driving nodes respectively, and each air-valve driving node is used
In the air quantity for controlling an air-valve.
2. a kind of agricultural facility net for air-source heat pump units VAV control device according to claim 1, which is characterized in that
Wireless receiving and dispatching custom protocol of the VAV control node based on CC1101, and the VAV control node includes control
Device Atmega88, radio receiving transmitting module CC1101, UNIX embedded OS, control algolithm and serial ports, the controller
Atmega88 and radio receiving transmitting module CC1101 is linked by spi bus, and the controller Atmega88 is embedded in based on UNIX
It works under formula operating system, the heat pump module controller serial ports phase of the serial ports and modular air source heat pump unit
Even.
3. a kind of based on a kind of control of agricultural facility net for air-source heat pump units VAV control device of any of claims 1 or 2
Method processed, which comprises the steps of:
The module heat pump unit of appropriate power is selected according to facility plastic greenhouse quantity and size, and chooses corresponding modular heat pump control
Device processed；
In the EEPROM of air-valve Variable Control node it is that each greenhouse distributes 1 management array, and by each facility plastic greenhouse
Area S1, S2 ..., Sn be stored in air-valve scheduler module EEPROM, then according to respective area distributions weight sizeI, j is positive integer；
When initialization, the air-valve angle of each greenhouse is distributed according to itself size: αj=90 ωj, and be stored in
In EEPROM；
By wireless sending module CC1101, is sent and ordered to the air-valve driving node of each greenhouse by the way of successively sending
Frame, in which: the CC1101 of wireless VAV control node is in running order always, each greenhouse air-valve driving node
When CC1101 is flat in a dormant state；
When setting value is not achieved in the supply air temperature of some greenhouse, increases or subtract according to the step value adjusting air valve angle of setting
Air-valve angle value until air-valve fully opens or completely closes, and is fed back to wireless VAV control section by small 1 step value
Point；After air-valve fully opens, heat pump unit loaded energy is requested to wireless VAV control node；When air-valve completely closes
Afterwards, energy is unloaded to wireless VAV control node request heat pump unit；
After wireless VAV control node receives the request of some air-valve driving node, EEPROM data are updated for it, and
Feedback request gives modular heat pump generator set controller.
4. control method according to claim 3, which is characterized in that the nothing of the VAV control node based on CC1101
Line receives and dispatches custom protocol, and the rule of the wireless receiving and dispatching custom protocol is as follows:
Wireless VAV control node is host, and wireless air-valve driving node is slave；Wireless VAV control node
CC1101 is in running order always, when the CC1101 of wireless air-valve driving node is flat in a dormant state, when being only waken up
Just work；
When wireless VAV control node is to sending when passing control instruction under air-valve driving node, include: start frame, command word,
Destination address word, air-valve angle-data and crc16 check word；
After air-valve driving node receives the control instruction that wireless VAV control node passes down, to wireless VAV control node
An acknowledgement frame ACK is returned, informs condition execution instruction；
After air-valve driving node data change, it is necessary to wireless VAV control node feeding back information, update EEPROM
Data；
After air-valve driving node uploads feedback information to wireless VAV control node, air-valve driving node needs to become to wireless
Boiler pressure control node returns to an air-valve driving node acknowledgement frame, and informing has received feedback information.
5. control method according to claim 3, which is characterized in that the air-valve driving node includes controller
Atmega128, drive module A3977, stepper motor and encoder, radio receiving transmitting module CC1101, UNIX embedded operation system
System, air-valve angle adaptive PI adjust algorithm, and the controller Atmega128 and radio receiving transmitting module CC1101 is total by SPI
Line is connected, and the Atmega128 is also connected with drive module A3977, and the Atmega128 is based on UNIX embedded operation system
The lower work of system.
6. control method according to claim 5, which is characterized in that the air-valve driving node uses following adaptive PI
Algorithm, and include the following steps:
It is adjusted using digital incremental PI control algolithm, stepper motor driving pulse is generated by drive module A3977, to adjust
The angle of air-valve；
According to the optimal target of Kalman filtering, 2 k of intelligent optimization PIp、kIParameter, and calculated using the global optimization that leapfrogs is mixed
Method；
Entire control module is using closed-loop control, according to the order of air-valve angular adjustment come the size of adjusting air valve corner, angle
Degree adjusts algorithm and uses PI algorithm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810771137.5A CN109028448A (en) | 2018-07-13 | 2018-07-13 | Agricultural facility net for air-source heat pump units VAV control device and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810771137.5A CN109028448A (en) | 2018-07-13 | 2018-07-13 | Agricultural facility net for air-source heat pump units VAV control device and control method |
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Application publication date: 20181218 |