CN113575465B - Intelligent wet curtain cooling system and regulation and control method thereof - Google Patents
Intelligent wet curtain cooling system and regulation and control method thereof Download PDFInfo
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- 238000001816 cooling Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000033228 biological regulation Effects 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 164
- 230000009467 reduction Effects 0.000 claims description 15
- 238000001704 evaporation Methods 0.000 claims description 12
- 230000008020 evaporation Effects 0.000 claims description 12
- 230000002159 abnormal effect Effects 0.000 claims description 9
- 239000008400 supply water Substances 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 11
- 238000009395 breeding Methods 0.000 abstract description 8
- 230000001488 breeding effect Effects 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 7
- 208000027954 Poultry disease Diseases 0.000 abstract description 4
- 230000006698 induction Effects 0.000 abstract 1
- 244000144977 poultry Species 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
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- 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
- A01K31/00—Housing birds
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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
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Abstract
The invention discloses an intelligent wet curtain cooling system and a regulation and control method thereof, and belongs to the technical field of greenhouse cooling. The wet curtain cooling device comprises a temperature sensor, a humidity sensor, a control unit, a water pump and a wet curtain, wherein the control unit acquires the temperature inside a shed and the humidity outside the shed in real time and calculates the cooling amplitude in each working period and the working time of each working period of the wet curtain, so that the adjustment parameters of the wet curtain are obtained, the working parameters of the wet curtain are automatically controlled, and particularly, the working time of the water pump is adjusted in time to be matched with the real-time change of the external environment. Therefore, the invention can adjust the working parameters of the wet curtain in real time according to the change of the external environment and the cooling effect, realize the stable and controllable cooling of the temperature in the breeding shed and effectively avoid the induction of poultry diseases.
Description
Technical Field
The invention belongs to the technical field of greenhouse cooling, and particularly relates to an intelligent wet curtain cooling system and a regulation and control method thereof.
Background
The wet curtain is cooling equipment for modern high-density breeding and large-volume places, and is low in cost, simple to operate and widely used, particularly in meat and poultry breeding.
The principle of wet curtain cooling is through the evaporation of moisture to cool down, and the cooling effect can change along with the temperature, humidity, the wet curtain characteristics of the wet curtain air of external flow through. The wet curtain system sends water to the wet curtain through the water pump, the wet curtain needs a certain time to evaporate the water after absorbing the water, and the water can be injected again after the wet curtain is dried again.
However, the existing wet curtain is mainly controlled by manually setting parameters, namely the operation time and the stop time of a water supply pump of the wet curtain are manually set to control the cooling effect; however, the cooling effect of the wet curtain can change along with the change of the external temperature and humidity. This requires experienced farmers to continually adjust the pump on/off time as the weather changes. Moreover, due to different experiences of personnel and the quality of the wet curtain, the experience of one breeding plant area is difficult to copy to other areas, and the use effect is greatly different due to the difference of the personnel. Because people can not detect the using effect all weather, the conditions such as cooling or rainfall in the evening in summer are that the outside changes, and personnel can not adjust in time, lead to the wet curtain surface to keep the state of wetting in usual, lead to the interior temperature fluctuation of big breadth of breeding the cowshed in the short time, induce poultry disease easily.
Disclosure of Invention
Aiming at the problems that whether the opening time is adjusted by observing whether the poultry is comfortable abnormally by workers at present, the operation is troublesome, and large temperature fluctuation is easily caused in a breeding shed, so that poultry diseases are easily induced, the invention provides the intelligent wet curtain cooling system and the regulation and control method thereof.
In order to solve the above problems, the present invention adopts the following technical solutions.
An intelligent wet curtain cooling system and a regulation and control method thereof comprise the following steps:
step one, a temperature sensor detects the temperature T _ inside in the shed in real time, and a humidity sensor detects the humidity H _ outside in real time; when the humidity H _ outside the shed is lower than a set humidity threshold value and the temperature T _ inside the shed reaches the starting temperature T _ threshold of the water pump, the water pump starts to supply water to the wet curtain, the wet curtain is evaporated and cooled, and the running time of the water pump is T _ on _0;
recording the lowest temperature value in the shed from the beginning of water supply of the water pump to the end of moisture evaporation of the wet curtain, subtracting the lowest temperature value in the shed from the starting temperature T _ threshold of the water pump to obtain the cooling amplitude delta T of the current working period, and adjusting the running time of the water pump of the next working period according to the cooling amplitude delta T and the humidity H _ outside the shed detected in the step one;
and step three, when the temperature T _ inside in the shed is recovered to the starting temperature T _ threshold of the water pump, the wet curtain enters the next working cycle, the water pump starts to supply water to the wet curtain, the water supply time is the running time of the water pump determined in the step two, the wet curtain is evaporated and cooled, and the step two and the step three are repeated.
In a further technical scheme, in the second step, a specific method for adjusting the running time of the water pump comprises the following steps:
if the humidity H _ outside the shed is higher than the humidity threshold value, the water pump keeps a normally open state;
if the humidity H _ outside the shed is lower than the humidity threshold, and,
the temperature reduction amplitude delta T < (0.6 delta T _ max), and the water pump running time is adjusted to T _ water _ n +1= T water_/delta T/(delta T _ max 0.6);
the temperature reduction amplitude delta T > (0.6 × delta T _ max), and the running time of the water pump is adjusted to T _ water _ n +1= T _water _/delta T/(delta T _ max 0.6)/1.2;
wherein, Δ T _ max is the maximum cooling amplitude, T _ water _ n is the water pump running time of the current working cycle, T _ water _ n +1 is the water pump running time of the next working cycle, and n belongs to R.
According to a further technical scheme, when t _ water _ n +1 is larger than t _ water _ n _ max, the fact that the water feeding amount of the water pump exceeds the evaporation capacity of the wet curtain is shown, the operation time of the water pump is changed to t _ on _0, and the alarm unit gives an alarm, wherein t _ water _ n _ max is the maximum operation time of the water pump.
According to the further technical scheme, in the second step, if the temperature reduction amplitude delta T of the current working period is larger than the threshold value of the temperature reduction amplitude, it is indicated that the water supply system of the water pump has a problem, and the alarm unit gives an alarm.
An intelligent wet curtain cooling system comprises a temperature sensor, a humidity sensor, a control unit, a water pump and a wet curtain;
the temperature sensor is arranged in the shed and is electrically connected with the control unit, the temperature sensor detects the temperature T _ inside in the shed in real time and inputs the detected temperature T _ inside in the shed into the control unit;
the humidity sensor is arranged outside the shed and electrically connected with the control unit, and is used for detecting the humidity H _ outside the shed in real time and inputting the detected humidity H _ outside the shed into the control unit;
the control unit is electrically connected with the water pump, and when the humidity H _ outside the shed is lower than a set humidity threshold value and the temperature T _ inside in the shed reaches the starting temperature T _ threshold of the water pump, the control unit controls the water pump to be started; the water pump is used for supplying water to the wet curtain, the running time of the water pump is t _ on _0, and when the running time of the water pump is finished, the control unit controls the water pump to be turned off;
the control unit records the lowest temperature value in the shed in the process from the beginning of water supply of the water pump to the end of moisture evaporation of the wet curtain; the control unit subtracts the lowest temperature value in the shed from the starting temperature T _ threshold of the water pump to obtain the cooling amplitude delta T of the current working period, and adjusts the water pump running time of the next working period according to the cooling amplitude delta T and the humidity H _ outside the shed;
when the temperature T _ inside in the shed detected by the temperature sensor is recovered to the starting temperature T _ threshold of the water pump, the wet curtain enters the next working period, the control unit controls the water pump to start to supply water to the wet curtain, the water supply time of the water pump is the running time of the water pump adjusted by the control unit, and the wet curtain carries out evaporation cooling work again;
the wet curtain is installed at the front end and two sides of the shed, and the temperature in the shed is evaporated and cooled through circulating work.
The technical scheme further comprises an alarm unit which is electrically connected with the control unit and used for alarming when the system is abnormal.
According to the further technical scheme, the specific method for adjusting the running time of the water pump comprises the following steps:
if the humidity H _ outside the shed is higher than the humidity threshold value, the water pump keeps a normally open state;
if the humidity H _ outside the shed is lower than the humidity threshold, and,
the temperature reduction amplitude delta T < (0.6 delta T _ max), and the water pump running time is adjusted to T _ water _ n +1= T water_/delta T/(delta T _ max 0.6);
the temperature drop amplitude Δ T > (0.6 × Δ T _ max) and the water pump operation time is adjusted to T _ water _ n +1= T _water _/Δ T/(Δ T _ max 0.6)/1.2.
Has the beneficial effects that: compared with the prior art, the technical scheme of the invention has the beneficial effects that:
according to the intelligent wet curtain cooling system and the regulation and control method thereof, the temperature change parameters in the use process of the wet curtain are detected in real time, the working time of the wet curtain is regulated according to the cooling effect, the temperature reduction amplitude in a shed is ensured to be basically unchanged, the problem of setting the opening and closing time of a water pump in the control of the wet curtain is solved, and the problem that a worker does not need to regulate the opening time of the water pump by observing whether poultry is comfortable and abnormal is solved.
Drawings
FIG. 1 is an overall flow chart of the present invention;
FIG. 2 is a block diagram of the control system of the present invention.
Detailed Description
The invention is further described with reference to specific embodiments and the accompanying drawings.
Example 1
The utility model provides a wet curtain cooling system of intelligence, the principle of wet curtain cooling is through the evaporation of moisture cooling, and the cooling effect can change along with the temperature, humidity and the wet curtain characteristic of the wet curtain air of external flow through.
The wet curtain cooling system comprises a temperature sensor, a humidity sensor, a control unit, an alarm unit, a water pump and a wet curtain. The temperature sensor is arranged in the shed and used for detecting the temperature in the shed in real time and inputting the detected temperature value into the control unit. The humidity sensor is installed outside the shed and used for detecting the humidity outside the shed in real time and inputting the detected humidity value into the control unit. The control unit collects a temperature value input by the temperature sensor and a humidity value input by the humidity sensor in real time, compares the temperature value with the starting temperature T _ threshold of the wet curtain set by a user when the humidity value input by the humidity sensor does not exceed a set humidity threshold, outputs a control signal to the water pump when the temperature value meets the condition, and controls the water pump to supply water to the wet curtain; when the closing time of the water pump is reached, the control unit controls the water pump to be closed. When the humidity value input by the humidity sensor exceeds the set humidity threshold value, the controller controls the water pump to be normally open. The wet curtain is installed at the front end and two sides of the shed, and the water pump is used for supplying water to the wet curtain. The moisture on the wet curtain evaporates to cool the temperature in the shed.
The alarm unit is electrically connected with the control unit and used for giving an alarm when the system is abnormal, so that field workers can be reminded of overhauling conveniently.
Example 2
The wet curtain is to sending water to the wet curtain through the water pump, and the wet curtain needs the certain time to evaporate moisture after absorbing moisture, and the water injection once more just can be carried out to the dry back of wet curtain, and the wet curtain is that the circulation is carried out the work and is cooled down to the temperature in the cowshed. If wet curtain surface keeps the state of wetting always with very big influence cooling effect, and wet curtain uses the problem to appear in breeding mainly because of the parameter sets up the mistake, leads to the temperature fluctuation of big breadth to appear in the short time breeding shed, induces poultry disease. Therefore, based on the above problems, the present embodiment provides an intelligent wet curtain cooling regulation and control method by using the wet curtain cooling system in embodiment 1, which realizes automatic control of parameters of a wet curtain, and specifically includes the following steps, as shown in fig. 1 and fig. 2:
the temperature sensor detects the temperature T _ inside in the shed in real time, and the humidity sensor detects the humidity H _ outside in the shed in real time; when the humidity H _ outside the shed is lower than a set humidity threshold value and the temperature T _ inside the shed reaches the opening temperature T _ threshold of the wet curtain, the running time of the water pump is set to be the minimum running time T _ on _0 of the water pump, the control unit outputs a control signal to the water pump, the water pump is started to supply water to the wet curtain, and after the water pump supplies water, the wet curtain starts to evaporate and cool. After the operation of the water pump is finished, the moisture on the wet curtain is gradually reduced due to evaporation, when the temperature rising speed in the shed is less than the threshold value of 0.1 ℃/min, the control unit judges that the water on the wet curtain is completely evaporated, and the cooling effect is 0.
In the wet curtain cooling process, the control unit records the lowest temperature value in the greenhouse from the beginning of water supply of the water pump to the end of moisture evaporation of the wet curtain, the temperature reduction amplitude delta T of the current working period is obtained by subtracting the lowest temperature value in the greenhouse from the opening temperature T _ threshold of the wet curtain, and the water pump running time of the next working period is adjusted by the control unit through the temperature reduction amplitude delta T and the humidity H _ outside the greenhouse.
After moisture on the wet curtain evaporates completely, temperature T _ inside in the cowshed can rise gradually, when temperature T _ inside in the cowshed resumes the opening temperature T _ threshold of wet curtain, show that the duty cycle of current wet curtain is ended, wet curtain gets into next duty cycle, the operating duration of water pump adopts the operating duration of control unit calculation adjustment, the water pump begins to sail, repeats above-mentioned working process to the temperature in the cowshed is cooled down through the endless work of wet curtain.
It should be particularly noted that, as shown in fig. 2, the control unit of the wet curtain acquires the temperature T _ inside the shed, the humidity H _ outside the shed, and the cooling amplitude Δ T in each working period in real time, and adjusts the working time of the water pump in time, where the specific adjustment method is as follows:
if when humidity H _ outside the shed is higher than the humidity threshold value, at this moment, the cooling effect of wet curtain is 0 basically, then the water pump keeps normally open to adopt low-temperature water to cool down the air that gets into the shed.
If the humidity H _ outside the shed is lower than the humidity threshold, and,
the temperature reduction amplitude delta T < (0.6 delta T _ max), and the water pump running time is adjusted to T _ water _ n +1= T water_/delta T/(delta T _ max 0.6);
the cooling range Δ T > (0.6 × Δ T _ max) and the pump operation time is adjusted to T _ water _ n +1= T _water _/Δ T/(Δ T _ max 0.6)/1.2, indicating that excessive back-off is performed when the cooling range is too large.
And the delta T _ max is the maximum cooling amplitude, 0.6 multiplied by the delta T _ max represents a cooling safety value, T _ water _ n is the water pump running time of the current working cycle, T _ water _ n +1 is the water pump running time of the next working cycle, and n belongs to R.
Several abnormal conditions may occur during the operation of the wet curtain:
the first abnormal state and the water pump water supply quantity are abnormal: in the process of adjusting the working time of the water pump, if t _ water _ n +1 is larger than t _ water _ n _ max, t _ water _ n _ max is the maximum running time of the water pump, the time that the water pump supplies water exceeds the time indicates that the water supply amount of the water pump exceeds the evaporation capacity of the wet curtain, and the wet curtain cannot work normally, at the moment, the control unit maintains the normal working time of the water pump to be the minimum running time t _ on _0 of the water pump, and the control unit outputs an alarm signal to the alarm unit, so that the system alarms to inform field workers to overhaul.
The second abnormal state and the water supply system of the water pump are abnormal: the control unit compares the cooling amplitude delta T of the current working period with a threshold value of the cooling amplitude, if the operating time of the water pump is not obviously different, and the cooling amplitude is greatly different, the problem of a water supply system of the water pump is indicated, at the moment, the control unit outputs an alarm signal to the alarm unit, and the system alarms to inform field workers to overhaul.
The examples described herein are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.
Claims (5)
1. An intelligent wet curtain cooling regulation and control method is characterized by comprising the following steps:
step one, a temperature sensor detects temperature T _ inside a shed in real time, and a humidity sensor detects humidity H _ outside the shed in real time; when the humidity H _ outside the shed is lower than a set humidity threshold value and the temperature T _ inside the shed reaches the starting temperature T _ threshold of the water pump, the water pump starts to supply water to the wet curtain, the wet curtain is evaporated and cooled, and the running time of the water pump is T _ on _0;
recording the lowest temperature value in the shed from the beginning of water supply of the water pump to the end of moisture evaporation of the wet curtain, subtracting the lowest temperature value in the shed from the starting temperature T _ threshold of the water pump to obtain the cooling amplitude delta T of the current working period, and adjusting the running time of the water pump of the next working period according to the cooling amplitude delta T and the humidity H _ outside the shed detected in the step one;
step three, when the temperature T _ inside in the shed is recovered to the starting temperature T _ threshold of the water pump, the wet curtain enters the next working cycle, the water pump starts to supply water to the wet curtain, the water supply time is the running time of the water pump determined in the step two, the wet curtain is evaporated and cooled, and the step two and the step three are repeated;
wherein: in the second step, the concrete method for adjusting the running time of the water pump comprises the following steps:
if the humidity H _ outside the shed is higher than the humidity threshold value, the water pump keeps a normally open state;
if the humidity H _ outside the shed is lower than the humidity threshold, and,
and (3) adjusting the running time of the water pump to be within the range of temperature reduction delta T < (0.6 × delta T _ max):
the temperature reduction amplitude delta T > (0.6 × delta T _ max) adjusts the running time of the water pump to be equal to that of the water pump
Wherein, Δ T _ max is the maximum cooling amplitude, T _ water _ n is the water pump running time of the current working cycle, T _ water _ n +1 is the water pump running time of the next working cycle, and n belongs to R.
2. The intelligent wet curtain cooling regulation and control method according to claim 1, characterized in that: when t _ water _ n +1 >.
3. The intelligent wet curtain cooling regulation and control method according to claim 2, characterized in that: in the second step, if the temperature reduction amplitude delta T of the current working period is larger than the threshold value of the temperature reduction amplitude, the water supply system of the water pump is indicated to have a problem, and the alarm unit gives an alarm.
4. The utility model provides a wet curtain cooling system of intelligence which characterized in that: the device comprises a temperature sensor, a humidity sensor, a control unit, a water pump and a wet curtain;
the temperature sensor is arranged in the shed and is electrically connected with the control unit, the temperature sensor detects the temperature T _ inside in the shed in real time and inputs the detected temperature T _ inside in the shed into the control unit;
the humidity sensor is arranged outside the shed and electrically connected with the control unit, detects the humidity H _ outside the shed in real time and inputs the detected humidity H _ outside the shed into the control unit;
the control unit is electrically connected with the water pump, and when the humidity H _ outside the shed is lower than a set humidity threshold value and the temperature T _ inside in the shed reaches the starting temperature T _ threshold of the water pump, the control unit controls the water pump to be started; the water pump is used for supplying water to the wet curtain, the running time of the water pump is t _ on _0, and when the running time of the water pump is finished, the control unit controls the water pump to be closed;
the control unit records the lowest temperature value in the shed in the process from the beginning of water supply of the water pump to the end of moisture evaporation of the wet curtain; the control unit subtracts the lowest temperature value in the shed from the starting temperature T _ threshold of the water pump to obtain the cooling amplitude delta T of the current working period, and adjusts the water pump running time of the next working period according to the cooling amplitude delta T and the humidity H _ outside the shed;
when the temperature T _ inside in the shed detected by the temperature sensor is recovered to the starting temperature T _ threshold of the water pump, the wet curtain enters the next working period, the control unit controls the water pump to start to supply water to the wet curtain, the water supply time of the water pump is the running time of the water pump adjusted by the control unit, and the wet curtain carries out evaporation cooling work again;
the wet curtains are arranged on two sides of the shed, and the temperature in the shed is evaporated and cooled through the circulation work;
wherein: the concrete adjusting method of the running time of the water pump comprises the following steps:
if the humidity H _ outside the shed is higher than the humidity threshold value, the water pump keeps a normally open state;
if the humidity H _ outside the shed is lower than the humidity threshold, and,
the temperature reduction amplitude delta T < (0.6 × delta T _ max), and the running time of the water pump is adjusted to be as follows:
the temperature reduction amplitude delta T > (0.6 × delta T _ max) adjusts the running time of the water pump to be as follows:
5. the intelligent wet curtain cooling system of claim 4, wherein: the alarm device also comprises an alarm unit which is electrically connected with the control unit and used for giving an alarm when the system is abnormal.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103960159A (en) * | 2013-01-31 | 2014-08-06 | 山东凤祥股份有限公司 | Chicken house |
| CN104145826A (en) * | 2014-08-06 | 2014-11-19 | 中国农业大学 | Livestock and poultry house summer wet curtain cooling automatic control system and control method thereof |
| CN106561476A (en) * | 2016-10-10 | 2017-04-19 | 桐庐畲洪禽业有限公司 | Integrated laying hen house internal water curtain cooling device and control method |
| KR20200137753A (en) * | 2019-05-31 | 2020-12-09 | 경상대학교산학협력단 | Method for predicting a temperature-humidity index in a windowless laying hen houses which employing a cross type or tunnel type ventilation system |
| GB202100853D0 (en) * | 2020-07-28 | 2021-03-10 | Ningxia Xiaoming Agriculture And Animal Husbandry Co Ltd | New chicken house |
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Patent Citations (5)
| 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 |
| CN104145826A (en) * | 2014-08-06 | 2014-11-19 | 中国农业大学 | Livestock and poultry house summer wet curtain cooling automatic control system and control method thereof |
| CN106561476A (en) * | 2016-10-10 | 2017-04-19 | 桐庐畲洪禽业有限公司 | Integrated laying hen house internal water curtain cooling device and control method |
| KR20200137753A (en) * | 2019-05-31 | 2020-12-09 | 경상대학교산학협력단 | Method for predicting a temperature-humidity index in a windowless laying hen houses which employing a cross type or tunnel type ventilation system |
| GB202100853D0 (en) * | 2020-07-28 | 2021-03-10 | Ningxia Xiaoming Agriculture And Animal Husbandry Co Ltd | New chicken house |
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Denomination of invention: An Intelligent Wet Curtain Cooling System and Its Control Method Granted publication date: 20230117 Pledgee: Bank of China Limited Nanjing Jiangbei New Area Branch Pledgor: JIANGSU SHENNONG INTELLIGENT TECHNOLOGY Co.,Ltd. Registration number: Y2024980020661 |