CN114706437A - Air volume control method based on pig position ventilation - Google Patents
Air volume control method based on pig position ventilation Download PDFInfo
- Publication number
- CN114706437A CN114706437A CN202210340653.9A CN202210340653A CN114706437A CN 114706437 A CN114706437 A CN 114706437A CN 202210340653 A CN202210340653 A CN 202210340653A CN 114706437 A CN114706437 A CN 114706437A
- Authority
- CN
- China
- Prior art keywords
- pig
- ventilation
- air
- temperature
- humidity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009423 ventilation Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000000523 sample Substances 0.000 claims abstract description 9
- 230000007613 environmental effect Effects 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000036760 body temperature Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 241000282887 Suidae Species 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 244000144980 herd Species 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003238 somatosensory effect Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/0047—Air-conditioning, e.g. ventilation, of animal housings
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Housing For Livestock And Birds (AREA)
Abstract
The invention relates to a general control or regulation system, in particular to an air volume control method based on pig position ventilation, which is different from the prior art that a ventilation cylinder is arranged above each pig position, the ventilation cylinder is communicated with an air supply main pipe, probes for respectively detecting air temperature and humidity are arranged near the pig position, the probes are connected to an environment controller, the environment controller is suitable for running on a computing device, and the air volume of a pigsty is controlled according to the air temperature and humidity of the pig position and by combining preset sensible temperature and happiness areas only required by pigs. The invention matches the fan and the air quantity according to the temperature, the humidity and the air speed of the pig herd position, thereby reducing the whole ventilation quantity and the energy consumption.
Description
Technical Field
The invention relates to a general control or regulation system, in particular to an air volume control method based on pig ventilation.
Background
The vertical ventilation mode of traditional pig house universal adoption places temperature, humidity probe in the pig house, is connected to environmental controller, and environmental controller detects the air temperature of district or living area pig position department of lying prone of swinery, if the air temperature of pig position department is higher than target temperature, then opens corresponding fan, and the wind that the fan produced forms corresponding wind speed at the pig house, produces the cooling effect to the pig. However, the cross section of the whole pigsty needs to be ventilated, the ventilation rate far exceeds that of the pig position, the number of the fans is large, and great energy waste is caused.
Meanwhile, the air temperature of the pigsty is not equal to the sensible temperature of the pig, the sensible temperature is the effective temperature sensed by the body of the pig integrating 3 factors of the air temperature, the humidity and the wind speed, and if the wind speed is higher and the sensible temperature is lower and the humidity is higher and the sensible temperature is higher under the same air temperature, the actual feeling of the pig cannot be really reflected by the mode of controlling the air temperature of the pigsty in the prior art.
Disclosure of Invention
In order to overcome one of the defects of the prior art, the invention provides an air volume control method based on pig ventilation, which adopts the following technical scheme:
the utility model provides an amount of wind control method based on pig position is ventilated, is different from prior art, installs a ventilation drum above every pig position, and the ventilation drum communicates with each other with the air supply person in charge, is close to the pig position installation and detects the probe of air temperature, humidity respectively, and the probe is connected to environmental controller, environmental controller is suitable for operation on the computing device, according to the air temperature of pig position, humidity, combines the only body temperature that needs of predetermined pig and happiness region, controls the amount of wind of pig house.
Further, the step of controlling the air output of each pig ventilation cylinder by the environment controller comprises the following steps:
defining: the temperature of the pig position is T, the sensible temperature needed by the pig is ET, the happy area of the sensible temperature of the pig is diff, the air delivery volume of the ventilation cylinder is Q, the minimum ventilation volume is Q0, the maximum ventilation volume is Qm, the humidity is rh, the current wind speed of the pig position is V, the distance from the section of the outlet of the ventilation cylinder to the pig position is x, the diameter of the section of the outlet of the ventilation cylinder is d0, the air delivery coefficient of the ventilation cylinder is a, the air delivery speed of the ventilation cylinder is V0, and the number of the ventilation cylinders is n;
when T is less than or equal to ET and Q is more than Q0, reducing Q in equal proportion; when T is less than or equal to ET and Q is not more than Q0, no operation is performed; entering the next step when T is larger than ET;
when ET is more than T and less than ET and diff, keeping the current Q; when T is more than or equal to ET + diff and Q is not more than 30 percent of Qm, increasing Q in equal proportion; when T is more than or equal to ET + diff and Q is more than 30% Qm, v is calculated according to the formula (1)
ET=T+rh(T) +v(T) （1）
③ when v is not more than 0.2, keeping the current Q; when v is greater than 0.2, calculating according to formula (2)
v= V0(ax,d0) （2）
Calculating the required Q per hour according to the formula (3) and keeping the current Q
Q=n*π(d0/2)2* V0*t （3）
Where t is a constant and equals 3600 seconds.
Further, the current required air supply volume of the whole pigsty can be obtained according to the air supply volume of the current ventilation cylinder of each pig position so as to match the fans with corresponding number to provide negative pressure or positive pressure for the pigsty.
Furthermore, in summer, the temperature and the humidity of air entering the air supply main pipe are reduced by arranging the spraying water curtain at the air inlet of the pigsty.
Compared with the prior art, the invention has the prominent substantive characteristics that:
according to the invention, the fan and the air quantity are matched according to the temperature, the humidity and the air speed of the pig herd position, so that the whole ventilation quantity is reduced, and the energy consumption is reduced.
And applying a body sensing temperature formula and a cylinder air supply mathematical formula to the ventilation calculation of the system to obtain the accurate air speed of the pig at the pig position, so as to maintain the most appropriate target temperature. The wind speed at the pig position is more accurately matched, and the environment most suitable for the swinery is created.
Drawings
Fig. 1 is a schematic view of the ventilation structure of the pig station of the present invention.
FIG. 2 is a control flow diagram of the environmental controller of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in figure 1, a ventilation cylinder is arranged above each pig position and is communicated with an air supply main pipe, probes for respectively detecting air temperature and humidity are arranged near the pig positions and are connected to an environment controller, the environment controller is suitable for running on a computing device, and the air supply amount of each pig position ventilation cylinder is controlled according to the air temperature and humidity of the pig positions and the preset temperature sensing and happiness areas needed by the pigs.
In the control method of the embodiment, according to the required target temperature of the swinery, namely the somatosensory temperature described below, the somatosensory temperature is the effective temperature sensed by the pigs which integrate 3 factors of air temperature, humidity and wind speed; the ventilation equipment is controlled through algorithm calculation, and accurate wind speed is created for the pig position to achieve effective somatosensory temperature.
As shown in fig. 2, a temperature and humidity probe is placed at a pig position and connected to an environment controller, the controller detects air temperature T and humidity RH at the pig position, and body sensing temperature ET required by a pig is known in the system.
When the pig site temperature is below the target temperature, a minimum ventilation Q0 is performed.
When the pig position temperature is higher than the target temperature and is lower than the target temperature plus the difference between the happiness area temperature, the ventilation quantity Q is kept unchanged.
When the pig bit temperature is higher than the target temperature and adds the difference in the happiness region temperature, the ventilation Q is increased, then the temperature is detected and is reduced to the difference in the happiness region temperature, if the temperature is reduced, the ventilation Q is kept unchanged. And if the temperature does not return to the temperature difference of the happiness region, acquiring ET according to a body sensing temperature formula, bringing the ET into the temperature T and the humidity rh of the pig position, and calculating the wind speed V required by the pig position.
And (5) obtaining the air speed of the cylinder air supply outlet according to a cylinder accurate air supply mathematical formula, wherein V =/V0 (ax, d 0).
Knowing the pig position wind speed V, the distance x between the cylinder and the pig position, the cylinder air supply coefficient a and the cylinder air outlet section diameter d0, calculating the wind speed V0 required by the cylinder air outlet
And (3) calculating the wind speed V0 of the cylinder air outlet, the area S of the cylinder air outlet and the number n of the cylinder air outlets, calculating the required wind quantity Q = n S V0 t per hour, and controlling the fans of corresponding models to be started by the controller to realize the ventilation quantity Q, so that the wind speed V0 of the circular pipe air inlet is realized, the wind speed V at the pig position is further realized, and the sensible temperature of the pig is maintained at ET.
The method uses the matching of the fan and the air inlet to generate stable and accurate air speed and ventilation quantity. In winter, effective ventilation can be provided. In spring and autumn, proper wind speed can be ensured, and the comfort of the swinery can be kept. In summer, the cooling effect can be realized by controlling spraying and water curtain operation, and meanwhile, the effect of more effective cooling is achieved by matching with proper wind speed.
In the embodiment, the existing ventilation method is improved, and energy is saved. The traditional pigsty adopts longitudinal ventilation, the whole pigsty is required to be ventilated, the number of the started fans is large, energy waste is caused, the air quantity is reduced after improvement, and the energy consumption is reduced.
Claims (4)
1. An air volume control method based on pig ventilation is characterized in that: the ventilation drum is installed above each pig position, and the ventilation drum is responsible for with the air supply and communicates with each other, is being close to the probe that pig position installation detected air temperature, humidity respectively, and probe connection to environmental controller, environmental controller is suitable for and runs on computing device, according to the air temperature of pig position, humidity, combines the body temperature that the pig that predetermines only needs and happy area, controls the air output of every pig position ventilation drum.
2. The air volume control method based on pig ventilation according to claim 1, characterized in that: the step of controlling the air output of each pig position ventilation cylinder by the environment controller comprises the following steps:
defining: the temperature of the pig position is T, the sensible temperature needed by the pig is ET, the happy area of the sensible temperature of the pig is diff, the air delivery volume of the ventilation cylinder is Q, the minimum ventilation volume is Q0, the maximum ventilation volume is Qm, the humidity is rh, the current wind speed of the pig position is V, the distance from the section of the outlet of the ventilation cylinder to the pig position is x, the diameter of the section of the outlet of the ventilation cylinder is d0, the air delivery coefficient of the ventilation cylinder is a, the air delivery speed of the ventilation cylinder is V0, and the number of the ventilation cylinders is n;
when T is less than or equal to ET and Q is more than Q0, reducing Q in equal proportion; when T is less than or equal to ET and Q is not more than Q0, no operation is performed; entering the next step when T is larger than ET;
when ET is more than T and less than ET and diff, keeping the current Q; when T is more than or equal to ET + diff and Q is not more than 30 percent of Qm, increasing Q in equal proportion; when T is more than or equal to ET + diff and Q is more than 30% Qm, v is calculated according to the formula (1)
ET=T+rh(T) +v(T) （1）
③ when v is not more than 0.2, keeping the current Q; when v is greater than 0.2, calculating according to formula (2)
v= V0(ax,d0) （2）
Calculating the required Q per hour according to the formula (3) and keeping the current Q
Q=n*π(d0/2)2* V0*t （3）
Where t is a constant equal to 3600 seconds.
3. The air volume control method based on pig ventilation according to claim 1 or 2, characterized in that: according to the air supply volume of the current ventilation cylinder of each pig position, the air supply volume required currently by the whole pigsty can be obtained so as to match the fans with corresponding number to provide negative pressure or positive pressure for the pigsty.
4. The air volume control method based on pig ventilation according to claim 1 or 2, characterized in that: in summer, the temperature and the humidity of air entering the air supply main pipe are reduced by arranging the spraying water curtain at the air inlet of the pigsty.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210340653.9A CN114706437A (en) | 2022-04-02 | 2022-04-02 | Air volume control method based on pig position ventilation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210340653.9A CN114706437A (en) | 2022-04-02 | 2022-04-02 | Air volume control method based on pig position ventilation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114706437A true CN114706437A (en) | 2022-07-05 |
Family
ID=82172327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210340653.9A Pending CN114706437A (en) | 2022-04-02 | 2022-04-02 | Air volume control method based on pig position ventilation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114706437A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103960159A (en) * | 2013-01-31 | 2014-08-06 | 山东凤祥股份有限公司 | Chicken house |
| CN104521799A (en) * | 2014-12-23 | 2015-04-22 | 安徽荣达禽业开发有限公司 | Automatic full-closed tier breeding pullet house ventilation method |
| CN204393049U (en) * | 2014-12-31 | 2015-06-17 | 广东德兴种养实业有限公司 | Sow farrowing bed speed change location heat sink |
| CN205983276U (en) * | 2016-09-18 | 2017-02-22 | 鹤壁大用牧业有限公司 | Interior environmental control system of house breeds |
| CN109240387A (en) * | 2018-10-26 | 2019-01-18 | 山东益客智能机械设备有限公司 | A kind of culture hut environmental control system |
| CN110160669A (en) * | 2019-04-23 | 2019-08-23 | 江苏深农智能科技有限公司 | A kind of poultry cultivation sendible temperature detection device and method |
| CN114047793A (en) * | 2021-09-26 | 2022-02-15 | 南京农业大学 | Water curtain cooling system based on swinery body surface temperature and temperature adjusting method thereof |
-
2022
- 2022-04-02 CN CN202210340653.9A patent/CN114706437A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103960159A (en) * | 2013-01-31 | 2014-08-06 | 山东凤祥股份有限公司 | Chicken house |
| CN104521799A (en) * | 2014-12-23 | 2015-04-22 | 安徽荣达禽业开发有限公司 | Automatic full-closed tier breeding pullet house ventilation method |
| CN204393049U (en) * | 2014-12-31 | 2015-06-17 | 广东德兴种养实业有限公司 | Sow farrowing bed speed change location heat sink |
| CN205983276U (en) * | 2016-09-18 | 2017-02-22 | 鹤壁大用牧业有限公司 | Interior environmental control system of house breeds |
| CN109240387A (en) * | 2018-10-26 | 2019-01-18 | 山东益客智能机械设备有限公司 | A kind of culture hut environmental control system |
| CN110160669A (en) * | 2019-04-23 | 2019-08-23 | 江苏深农智能科技有限公司 | A kind of poultry cultivation sendible temperature detection device and method |
| CN114047793A (en) * | 2021-09-26 | 2022-02-15 | 南京农业大学 | Water curtain cooling system based on swinery body surface temperature and temperature adjusting method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 陈丽媛;洪小华;颜培实;: "我国南方冬季和夏季肉牛体感温度研究" * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102012065B (en) | Heating system heat metering and heat energy-saving control method and special device thereof | |
| CN201364080Y (en) | Cooling tower air volume regulating system and variable air volume cooling tower adopting same | |
| CN108844195B (en) | Temperature and humidity set value control device and control method | |
| CN108709224B (en) | Self-adaptive control mine return air waste heat recovery heat supply system | |
| CN106885334A (en) | Variable air volume control in air conditioner equipment and device | |
| CN114326882B (en) | Environment control method and system suitable for pig raising in building | |
| CN109708195B (en) | Heat pump suitable for high altitude and control method thereof | |
| CN108731189B (en) | Central air conditioner continuous tuning system and method | |
| CN112013503A (en) | Intelligent control method for energy consumption of air conditioner | |
| CN206073370U (en) | Public Areas Associated with Metro Station air conditioner fresh air control system | |
| CN113431619A (en) | Intelligent control system for ventilation of highway tunnel | |
| CN203964232U (en) | Duct type Evaporative Cooling Air-conditioning System | |
| CN115407813A (en) | Indoor modularization transformer substation energy-saving optimization system based on distributed air conditioner | |
| CN115540114A (en) | Indoor environment optimized lifting heating and ventilation control system and method | |
| CN114706437A (en) | Air volume control method based on pig position ventilation | |
| CN105352021B (en) | It is carried out using solar air heat collection for the warm system and control method for providing hot water | |
| CN114484671A (en) | Indoor fresh air control system | |
| CN113465157A (en) | Multi-parameter dynamic fresh air control system and method | |
| CN202747546U (en) | Intelligent fresh air control device for air conditioner | |
| CN202928612U (en) | Performance detection system of mine return air heat exchanger | |
| CN112594906A (en) | Intelligent identification comfortable air conditioning system with memory function according to different persons and operation method | |
| CN109197612B (en) | Energy-saving environment control system for pig farm and control method thereof | |
| CN106440154A (en) | Air conditioning system control method with humidifying function and air conditioning system | |
| CN206291420U (en) | A kind of cooling tower intelligence control system | |
| CN212585156U (en) | Intelligent energy regulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220705 |