Method for multi-parameter regulation of livestock house environment, electronic device and storage medium

Abstract

The application relates to the field of livestock house environment regulation, and provides a livestock house environment multi-parameter regulation method, an electronic device and a storage medium.The method comprises the following steps: determining the temperature difference between the inside and outside of a target livestock house and the carbon dioxide concentration in the inside of the target livestock house; based on the temperature difference between the inside and outside of the target livestock house and the carbon dioxide concentration in the inside of the target livestock house, and in combination with multi-stage temperature difference ranges between the inside and outside of the target livestock house and multi-stage carbon dioxide concentration thresholds in the inside of the target livestock house, the fan of the target livestock house is regulated; wherein the multi-stage temperature difference ranges between the inside and outside of the target livestock house comprise a plurality of different temperature difference ranges between the inside and outside of the target livestock house; and the multi-stage carbon dioxide concentration thresholds in the inside of the target livestock house comprise a plurality of carbon dioxide concentration thresholds in the inside of the target livestock house corresponding to each temperature difference range between the inside and outside of the target livestock house one by one.The application can relieve the contradiction between heat preservation and ventilation of the livestock house, reduce energy consumption, and thus improve the regulation efficiency of the livestock house environment.

Description

Technical Field

[0001] This application relates to the field of livestock housing environment control, specifically to a method for controlling multiple parameters of livestock housing environment, electronic equipment, and storage medium. Background Technology

[0002] During cold seasons, livestock sheds maintain a certain temperature through heating equipment or the animals' own heat production, with the temperature difference between the inside and outside exceeding 15°C. Simultaneously, ventilation is necessary to ensure the oxygen required for livestock life activities, remove stale air, and reduce airborne pathogens. However, ventilation also leads to heat loss and a drop in temperature. Currently, ventilation equipment in livestock sheds during winter and spring / autumn primarily consists of fans, with corresponding control logic using intermittent time-based regulation or fan on / off control based on CO2 concentration. Under these logics, the fans are simply on or off, maintaining a certain air quality level throughout the day. However, this control logic is prone to conflicting demands between insulation and ventilation, resulting in low efficiency in current livestock shed environmental control. Summary of the Invention

[0003] This application provides a method for multi-parameter control of livestock housing environment, electronic equipment, and storage medium to alleviate the contradiction between livestock housing insulation and ventilation, reduce energy consumption, and improve the control efficiency of livestock housing environment.

[0004] In a first aspect, embodiments of this application provide a method for multi-parameter control of livestock housing environment, including:

[0005] Determine the temperature difference between the inside and outside of the target livestock shed and the carbon dioxide concentration inside the shed;

[0006] Based on the temperature difference between the inside and outside of the shed and the carbon dioxide concentration inside the shed, combined with the multi-level temperature difference range between the inside and outside of the shed and the multi-level carbon dioxide concentration threshold, the fans of the target livestock shed are regulated.

[0007] The multi-level indoor and outdoor temperature difference range includes multiple different indoor and outdoor temperature difference ranges; the multi-level indoor carbon dioxide concentration threshold includes multiple indoor carbon dioxide concentration thresholds that correspond one-to-one with each indoor and outdoor temperature difference range in the multi-level indoor and outdoor temperature difference range.

[0008] In one embodiment, the target livestock shed includes a sensible heat recovery ventilation system; the regulation of the fans in the target livestock shed based on the temperature difference between the inside and outside of the shed, the carbon dioxide concentration inside the shed, and in combination with multi-level temperature difference ranges between the inside and outside of the shed and multi-level carbon dioxide concentration thresholds, includes:

[0009] Based on the temperature inside the target livestock shed, a target control mode is determined from preset control modes; each preset control mode corresponds to a different temperature range inside the shed; the preset control modes include at least a first control mode;

[0010] If the target control mode is the first control mode, then the temperature difference between the inside and outside of the building is compared with the first temperature difference threshold between the inside and outside of the building.

[0011] If the temperature difference between inside and outside the building is greater than or equal to the first temperature difference threshold between inside and outside the building, then the temperature difference between inside and outside the building is compared with the second temperature difference threshold between inside and outside the building, and the temperature difference between inside and outside the building is compared with the third temperature difference threshold between inside and outside the building; wherein, the second temperature difference threshold between inside and outside the building is less than the third temperature difference threshold between inside and outside the building.

[0012] If the temperature difference between the inside and outside of the shed is less than the third temperature difference threshold between the inside and outside of the shed and greater than the second temperature difference threshold between the inside and outside of the shed, then the target livestock shed will be subject to a first control indicator detection.

[0013] If the target livestock house has a first control indicator, the temperature difference between the inside and outside of the house is compared with the temperature difference range between the inside and outside of the house in each of the multi-level temperature difference ranges to obtain a first comparison result; wherein, the first control indicator is used to indicate that the target livestock house has turned on the fan joint control mode.

[0014] Based on the first comparison result, a first target indoor carbon dioxide concentration threshold is determined from each indoor carbon dioxide concentration threshold of the multi-level indoor carbon dioxide concentration threshold.

[0015] The carbon dioxide concentration inside the building is compared with the first target carbon dioxide concentration threshold to obtain a second comparison result;

[0016] Based on the second comparison result, the number and speed of the fans in the sensible heat recovery ventilation system are adjusted.

[0017] In one embodiment, adjusting the number and speed of fans in the sensible heat recovery ventilation system based on the second comparison result includes any one of the following:

[0018] If the second comparison result is that the carbon dioxide concentration in the building is greater than the first target carbon dioxide concentration threshold, then the number of fans is determined based on the first target carbon dioxide concentration threshold, and the fans in the sensible heat recovery ventilation system corresponding to the number of fans are controlled to be constantly open at the first preset speed.

[0019] If the second comparison result indicates that the carbon dioxide concentration inside the building is less than or equal to the first target carbon dioxide concentration threshold inside the building, then all fans in the sensible heat recovery ventilation system are controlled to stop operating.

[0020] In one embodiment, after performing a first control indicator detection on the target livestock shed if the temperature difference between the inside and outside of the shed is less than the third temperature difference threshold between the inside and outside of the shed and greater than the second temperature difference threshold between the inside and outside of the shed, the method further includes:

[0021] If the target livestock shed does not have a first control marker, then the target livestock shed will be tested for a second control marker.

[0022] If the target livestock shed has a second control indicator, then the fan in the sensible heat recovery ventilation system is controlled to operate at a second preset speed according to a preset intermittent operation rule; wherein, the second control indicator is used to indicate that the target livestock shed has activated the fan intermittent control mode.

[0023] In one embodiment, the target livestock shed further includes a positive / negative pressure ventilation system; after comparing the temperature difference between the inside and outside of the shed with a second temperature difference threshold between the inside and outside of the shed, and comparing the temperature difference between the inside and outside of the shed with a third temperature difference threshold between the inside and outside of the shed, the method further includes:

[0024] If the temperature difference between the inside and outside of the shed is greater than or equal to the third temperature difference threshold between the inside and outside of the shed, or if the temperature difference between the inside and outside of the shed is less than or equal to the second temperature difference threshold between the inside and outside of the shed, then the target livestock shed will be subject to a first control indicator detection.

[0025] If the target livestock shed has a first control indicator, then the temperature difference between the inside and outside of the shed is compared with the temperature difference range between the inside and outside of each shed in the multi-level temperature difference range to obtain a third comparison result;

[0026] Based on the third comparison result, a second target indoor carbon dioxide concentration threshold is determined from each indoor carbon dioxide concentration threshold of the multi-level indoor carbon dioxide concentration threshold.

[0027] The carbon dioxide concentration inside the building is compared with the second target carbon dioxide concentration threshold to obtain a fourth comparison result;

[0028] Based on the fourth comparison result, the number and speed of the fans in the positive / negative pressure ventilation system are adjusted.

[0029] In one embodiment, after performing a first control indicator detection on the target livestock shed if the temperature difference between the inside and outside of the shed is greater than or equal to the third temperature difference threshold between the inside and outside of the shed, or if the temperature difference between the inside and outside of the shed is less than or equal to the second temperature difference threshold between the inside and outside of the shed, the method further includes:

[0030] If the target livestock shed does not have a first control marker, then the target livestock shed will be tested for a second control marker.

[0031] If the target livestock shed has a second control indicator, then the fan in the positive / negative pressure ventilation system is controlled to operate at a second preset speed according to a preset intermittent operation rule.

[0032] In one embodiment, after comparing the temperature difference between the inside and outside of the building with a first temperature difference threshold between the inside and outside of the building, the method further includes:

[0033] If the temperature difference between the inside and outside of the building is less than the first temperature difference threshold between the inside and outside of the building, then the fan in the positive / negative pressure ventilation system is controlled to run at the second preset speed.

[0034] In one embodiment, it also includes:

[0035] The target livestock shed was subjected to third-level control marker detection;

[0036] If the target livestock shed has a third control indicator, then the pressure difference between the inside and outside of the target livestock shed is determined, and the pressure difference is compared with a first pressure difference threshold and a second pressure difference threshold respectively; wherein, the third control indicator is used to indicate that the target livestock shed has activated the automatic ventilation control mode; the second pressure difference threshold is greater than the first pressure difference threshold;

[0037] If the pressure difference between the inside and outside of the shed is greater than the second pressure difference threshold or less than the first pressure difference threshold, then determine whether the number of times the ventilation window of the target livestock shed is adjusted within a preset time is less than or equal to the first preset number of times.

[0038] If the number of times the ventilation window of the target livestock shed is adjusted within a preset time is less than or equal to the first preset number of times, then it is determined whether the pressure difference between the inside and outside of the shed is less than the first pressure difference threshold.

[0039] If the pressure difference between the inside and outside of the building is less than the first pressure difference threshold, the angle of the windshield is reduced upward or downward based on the first angle threshold; if the pressure difference between the inside and outside of the building is greater than or equal to the first pressure difference threshold, the angle of the windshield is increased upward or downward based on the first angle threshold.

[0040] Determine whether the angle value of the windshield is a second angle threshold or a third angle threshold;

[0041] If the angle value of the air vent is not the second angle threshold or the third angle threshold, then determine whether the number of times the air vent is adjusted within a preset time is greater than the second preset number; if it is determined that the number of times the air vent is adjusted within a preset time is greater than the second preset number, then determine whether the pressure difference between the inside and outside of the shed is less than the first pressure difference threshold; if yes, then control the fan of the target livestock shed to increase the third preset speed; if no, then control the fan of the target livestock shed to decrease the third preset speed.

[0042] If the angle of the windshield is a second angle threshold or a third angle threshold, then determine whether the pressure difference between the inside and outside of the shed is less than the first pressure difference threshold; if yes, then control the fan of the target livestock shed to increase the third preset speed; if no, then control the fan of the target livestock shed to decrease the third preset speed.

[0043] Secondly, embodiments of this application provide an electronic device, including a processor and a memory storing a computer program, wherein the processor executes the program to implement the multi-parameter control method for livestock housing environment described in the first aspect.

[0044] Thirdly, embodiments of this application provide a storage medium, which is a computer-readable storage medium including a computer program. When the computer program is executed by a processor, it implements the multi-parameter control method for livestock housing environment described in the first aspect.

[0045] The livestock housing environment multi-parameter control method, electronic device and storage medium provided in this application embodiment can control the speed of the fan in the target livestock housing according to the temperature difference between the inside and outside of the target livestock housing and the carbon dioxide concentration inside the housing, combined with the multi-level temperature difference range between the inside and outside of the housing and the multi-level carbon dioxide concentration threshold. This can alleviate the contradiction between the insulation and ventilation of the livestock housing, reduce energy consumption, and thereby improve the control efficiency of the livestock housing environment. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a flowchart illustrating the multi-parameter control method for livestock housing environment provided in the embodiments of this application;

[0048] Figure 2 This is a flowchart illustrating the first control mode in the multi-parameter control method for livestock housing environment provided in the embodiments of this application;

[0049] Figure 3 This is a flowchart illustrating the second control mode in the multi-parameter control method for livestock housing environment provided in this application embodiment;

[0050] Figure 4 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] The following describes in detail the multi-parameter control method for livestock housing environment, electronic equipment, and storage medium provided in this application, with reference to embodiments.

[0053] Figure 1 This is a flowchart illustrating the multi-parameter control method for livestock housing environment provided in an embodiment of this application. (Refer to...) Figure 1 This application provides a method for controlling multiple parameters of a livestock housing environment, which may include:

[0054] Step S100: Determine the temperature difference between the inside and outside of the target livestock shed and the carbon dioxide concentration inside the shed;

[0055] It should be noted that the execution subject of the multi-parameter control method for livestock housing environment provided in this application embodiment can be a computer device, such as a PLC (Programmable Logic Controller) control box, mobile phone, tablet computer, laptop computer, handheld computer, vehicle-mounted electronic device, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc.

[0056] In this embodiment, the multi-parameter control method for livestock housing environment provided in this application embodiment is implemented using a PLC control box as an example.

[0057] In this embodiment, the target livestock shed can be a livestock shed that requires environmental control.

[0058] In this application, the temperature difference between the inside and outside of the livestock shed can be obtained by calculating the difference between the measured temperature inside and outside the target livestock shed.

[0059] The carbon dioxide concentration inside the building can be measured using a CO2 sensor.

[0060] Step S200: Based on the temperature difference between inside and outside the shed and the carbon dioxide concentration inside the shed, combined with the temperature difference range between inside and outside the shed and the carbon dioxide concentration threshold of the shed, the fans of the target livestock shed are adjusted.

[0061] It should be noted that the multi-level indoor and outdoor temperature difference range in this application includes multiple different indoor and outdoor temperature difference ranges. The number of indoor and outdoor temperature difference ranges includes, but is not limited to, 3, 5, etc.

[0062] The multi-level indoor carbon dioxide concentration thresholds include multiple indoor carbon dioxide concentration thresholds that correspond one-to-one with the indoor and outdoor temperature difference ranges of each multi-level building.

[0063] Specifically, the number of indoor carbon dioxide concentration thresholds in the multi-level indoor carbon dioxide concentration thresholds is consistent with the number of indoor and outdoor temperature difference ranges in the multi-level indoor and outdoor temperature difference ranges. For example, if the number of indoor and outdoor temperature difference ranges in the multi-level indoor and outdoor temperature difference ranges is 3, then the number of indoor carbon dioxide concentration thresholds in the multi-level indoor carbon dioxide concentration thresholds is 3; if the number of indoor and outdoor temperature difference ranges in the multi-level indoor and outdoor temperature difference ranges is 5, then the number of indoor carbon dioxide concentration thresholds in the multi-level indoor carbon dioxide concentration thresholds is also 5.

[0064] For example, if the number of temperature difference ranges and carbon dioxide concentration thresholds within a multi-level dormitory building is 3, where the first temperature difference range is less than or equal to 7 degrees Celsius, the second is greater than 7 degrees Celsius but less than or equal to 15 degrees Celsius, and the third is greater than 15 degrees Celsius, and three carbon dioxide concentration thresholds A, B, and C are set, with A corresponding to the first temperature difference range, B to the second, and C to the third, the same logic applies when the number of temperature difference ranges and carbon dioxide concentration thresholds within a multi-level dormitory building is 5 or other values.

[0065] For example, if it is determined that the temperature difference between the inside and outside of the building is within the first temperature difference range between the inside and outside of the building, then the carbon dioxide concentration threshold A inside the building can be determined as the target carbon dioxide concentration threshold inside the building.

[0066] It should be noted that the target livestock shed may be equipped with equipment for environmental control, which may include, but is not limited to, fans, ventilation windows, heating equipment, etc.

[0067] The target livestock shed may include a sensible heat recovery ventilation system and a positive / negative pressure ventilation system.

[0068] The fans in this application can be divided into fans in sensible heat recovery ventilation systems and fans in positive / negative pressure ventilation systems.

[0069] Positive / negative pressure ventilation systems are used to ventilate and cool (remove excess heat) livestock sheds, and their fans can include positive pressure fans and negative pressure fans.

[0070] The fans in a sensible heat recovery ventilation system can include exhaust fans and fresh air fans.

[0071] The fan control in this application can include at least the fan speed control and the number of fans.

[0072] It should be noted that this application can also display the currently controlled equipment and its parameters on a display device for users to view.

[0073] The multi-parameter control method for livestock housing environment provided in this application embodiment can control the speed of the fans in the target livestock housing based on the temperature difference between the inside and outside of the housing and the carbon dioxide concentration inside the housing, combined with the temperature difference range between the inside and outside of the housing and the carbon dioxide concentration threshold of the housing at multiple levels. This can alleviate the contradiction between heat preservation and ventilation in livestock housing, reduce energy consumption, and thereby improve the control efficiency of the livestock housing environment.

[0074] In one embodiment, based on the temperature difference between inside and outside the barn and the carbon dioxide concentration inside the barn, combined with the multi-level temperature difference range between inside and outside the barn and the multi-level carbon dioxide concentration threshold, the fans of the target livestock barn are regulated, including:

[0075] Step S201: Determine the target control mode from the preset control modes based on the temperature inside the target livestock shed.

[0076] Each preset control mode corresponds to a different indoor temperature range;

[0077] The preset control mode in this application may include a first control mode and a second control mode, and the first control mode and the second control mode each have a corresponding identifier. This application does not specifically limit the identifier of the control mode, as long as it can be used to identify and distinguish the first control mode and the second control mode. In this application, the first control mode may be a spring and autumn control mode or a winter control mode, and the second control mode may be a summer control mode.

[0078] Therefore, after obtaining the temperature inside the target livestock shed, the preset control mode corresponding to the temperature range of each shed is determined as the target control mode by comparing the temperature inside the shed with the temperature range of each shed.

[0079] It should be noted that, to avoid frequent switching between different seasonal modes due to temperature fluctuations at critical values ​​caused by indoor temperature fluctuations or sensor measurement errors, a hysteresis setting is added when judging temperature in the first and second control modes. The effect of the hysteresis setting is as follows: For example, if the indoor temperature Tdb,i > 24 degrees Celsius, the fan is set to start. A hysteresis setting of 2 degrees Celsius can be set upwards or downwards. Setting it downwards means the fan starts when Tdb,i > 24 degrees Celsius, and stops when Tdb,i < 22 degrees Celsius. Setting it upwards works similarly. Here, Tdb,i represents the indoor temperature. This setting helps solve the problem of frequent switching between multiple control modes within a day, reducing the number of start-ups and shutdowns of different control devices and protecting the equipment.

[0080] Step S202: If the target control mode is the first control mode, then compare the temperature difference between the inside and outside of the building with the first temperature difference threshold between the inside and outside of the building.

[0081] If the target control mode is determined to be the first control mode, i.e. the spring and autumn control mode or the winter control mode, then the temperature difference between the inside and outside of the dormitory can be further compared with the first temperature difference threshold between the inside and outside of the dormitory. This will determine the relationship between the temperature difference between the inside and outside of the dormitory and the first temperature difference threshold between the inside and outside of the dormitory, and obtain the comparison result that the temperature difference between the inside and outside of the dormitory is greater than or equal to the first temperature difference threshold between the inside and outside of the dormitory, or obtain the comparison result that the temperature difference between the inside and outside of the dormitory is less than the first temperature difference threshold between the inside and outside of the dormitory.

[0082] The temperature difference threshold between the inside and outside of the first room can be set according to actual needs.

[0083] Step S203: If the temperature difference between inside and outside the dormitory is greater than or equal to the first temperature difference threshold between inside and outside the dormitory, then the temperature difference between inside and outside the dormitory is compared with the second temperature difference threshold between inside and outside the dormitory, and the temperature difference between inside and outside the dormitory is compared with the third temperature difference threshold between inside and outside the dormitory.

[0084] The second internal and external temperature difference threshold is a lower value set for the internal and external temperature difference, and the specific value is not limited; the third internal and external temperature difference threshold is a higher value set for the internal and external temperature difference, and the specific value is not limited. That is, the second internal and external temperature difference threshold is less than the third internal and external temperature difference threshold.

[0085] If the comparison determines that the temperature difference between inside and outside the dormitory is greater than or equal to the first temperature difference threshold between inside and outside the dormitory, then the temperature difference between inside and outside the dormitory is further compared with the second temperature difference threshold between inside and outside the dormitory, and the temperature difference between inside and outside the dormitory is compared with the third temperature difference threshold between inside and outside the dormitory. In this way, the magnitude relationship between the temperature difference between inside and outside the dormitory and the second temperature difference threshold between inside and outside the dormitory, and the magnitude relationship between the temperature difference between inside and outside the dormitory and the third temperature difference threshold between inside and outside the dormitory are determined respectively.

[0086] Step S204: If the temperature difference between inside and outside the shed is less than the third temperature difference threshold between inside and outside the shed and greater than the second temperature difference threshold between inside and outside the shed, then the first control marker detection is performed on the target livestock shed.

[0087] If, after comparison, it is determined that the temperature difference between the inside and outside of the livestock shed is less than the third temperature difference threshold but greater than the second temperature difference threshold, then the equipment in the target livestock shed will be operated in sensible heat recovery ventilation mode, and the presence of the first control indicator in the target livestock shed will be detected. The sensible heat recovery ventilation mode refers to the control mode corresponding to the sensible heat recovery ventilation system.

[0088] The first control indicator is used to indicate that the target livestock house has started the joint control mode of the fans.

[0089] The combined control mode of the fans in this application is a mode that combines the temperature difference between the inside and outside of the barn with the carbon dioxide (CO2) control mode. This mode controls the fans of the target livestock barn by combining the temperature difference range between the inside and outside of the barn at multiple levels with the carbon dioxide concentration threshold at multiple levels.

[0090] Step S205: If the target livestock house has a first control indicator, then the temperature difference between the inside and outside of the house is compared with the temperature difference range between the inside and outside of each house in the multi-level temperature difference range to obtain the first comparison result.

[0091] If the target livestock shed is found to have a first control indicator, it means that the target livestock shed has started the fan joint control mode. Then the temperature difference between the inside and outside of the shed can be compared with the temperature difference range between the inside and outside of each shed in the multi-level temperature difference range, and the comparison result obtained is determined as the first comparison result.

[0092] Step S206: Based on the first comparison result, determine the first target indoor carbon dioxide concentration threshold from the indoor carbon dioxide concentration thresholds of each of the multi-level indoor carbon dioxide concentration thresholds.

[0093] After obtaining the first comparison result, the temperature difference range inside and outside the multi-level temperature difference range is determined as the first target temperature difference range inside and outside the building. The carbon dioxide concentration threshold inside the building that corresponds to each temperature difference range inside and outside the building in the multi-level temperature difference range is determined as the first target carbon dioxide concentration threshold inside the building.

[0094] For example: if the first comparison result is that the temperature difference between the inside and outside of the building is within the first temperature difference range between the inside and outside of the building in the multi-level temperature difference range, then the temperature difference range between the inside and outside of the building is determined as the first target temperature difference range between the inside and outside of the building; and the carbon dioxide concentration threshold A in the multi-level carbon dioxide concentration thresholds A, B, and C that corresponds to the first target temperature difference range between the inside and outside of the building (i.e., the first temperature difference range between the inside and outside of the building) is determined as the first target carbon dioxide concentration threshold in the building.

[0095] Step S207: Compare the carbon dioxide concentration inside the building with the first target carbon dioxide concentration threshold inside the building to obtain the second comparison result;

[0096] After obtaining the first target carbon dioxide concentration threshold, the carbon dioxide concentration in the barn can be compared with the first target carbon dioxide concentration threshold to determine the relationship between the two. A second comparison result can be obtained, either the carbon dioxide concentration in the barn is greater than the first target carbon dioxide concentration threshold, or the carbon dioxide concentration in the barn is less than or equal to the first target carbon dioxide concentration threshold.

[0097] Step S208: Based on the second comparison result, adjust the number and speed of the fans in the sensible heat recovery ventilation system.

[0098] This application allows for the pre-setting of a specific number of fans for different indoor carbon dioxide concentration thresholds. Therefore, after obtaining the second comparison result, if it is determined that the indoor carbon dioxide concentration is greater than the first target indoor carbon dioxide concentration threshold, the number of fans is determined based on the first target indoor carbon dioxide concentration threshold, and the fans corresponding to the determined number of fans in the sensible heat recovery ventilation system are controlled to operate continuously at a first preset speed. The first preset speed can be a speed set according to actual needs.

[0099] If the second comparison result indicates that the carbon dioxide concentration inside the building is less than or equal to the first target carbon dioxide concentration threshold inside the building, then all fans in the sensible heat recovery ventilation system will be shut down.

[0100] This embodiment can adjust the number and speed of fans in the sensible heat recovery ventilation system of the target livestock house based on the temperature difference between inside and outside the house and the carbon dioxide concentration inside the house, combined with the temperature difference range between inside and outside the house and the carbon dioxide concentration threshold of the house at multiple levels. This can alleviate the contradiction between heat preservation and ventilation in the livestock house, reduce energy consumption, and thus improve the efficiency of the livestock house environment control.

[0101] In some embodiments, if the temperature difference between the inside and outside of the barn is less than a third temperature difference threshold between the inside and outside of the barn and greater than a second temperature difference threshold between the inside and outside of the barn, then after performing the first control indicator detection on the target barn, the method further includes:

[0102] Step 2091: If the target livestock shed does not have the first control marker, then the target livestock shed will be tested for the second control marker.

[0103] If it is determined that the target livestock shed does not have the first control indicator, it means that the target livestock shed has not started the fan joint control mode. Then, further detection is needed to determine whether the target livestock shed has the second control indicator.

[0104] The second control indicator is used to indicate that the target livestock shed has activated the intermittent control mode of the fan.

[0105] The intermittent control mode of the fan is a mode in which the fan runs intermittently at a specified speed. Intermittent operation means running for a specified period of time and then stopping for another specified period of time. The running and stopping times can be the same or different.

[0106] Step 2092: If the target livestock house has a second control indicator, control the fan in the sensible heat recovery ventilation system to operate at the second preset speed according to the preset intermittent operation rule;

[0107] The second control indicator is used to indicate that the target livestock shed has activated the intermittent control mode of the fan.

[0108] If the target livestock shed is found to have a second control indicator, it means that the target livestock shed has started the intermittent control mode of the fan. Then, the fan in the sensible heat recovery ventilation system is controlled to operate at the second preset speed according to the preset intermittent operation rule.

[0109] The second preset speed can be a speed set according to actual needs. Furthermore, the second preset speed can be the same as or different from the first preset speed.

[0110] Preset intermittent operation rules can include pre-set running time and stop time.

[0111] In this embodiment, when the temperature difference between the inside and outside of the target livestock shed is less than the third temperature difference threshold between the inside and outside of the shed and greater than the second temperature difference threshold between the inside and outside of the shed, and the intermittent control mode of the fan has been activated, the fan in the sensible heat recovery ventilation system is controlled to operate at the second preset speed according to the preset intermittent operation rule. This can alleviate the contradiction between livestock shed insulation and ventilation, reduce energy consumption, and thereby improve the control efficiency of the livestock shed environment.

[0112] In some embodiments, after comparing the temperature difference between inside and outside the building with a second temperature difference threshold between inside and outside the building, and comparing the temperature difference between inside and outside the building with a third temperature difference threshold between inside and outside the building, the method further includes:

[0113] Step 210: If the temperature difference between inside and outside the barn is greater than or equal to the third temperature difference threshold between inside and outside the barn, or if the temperature difference between inside and outside the barn is less than or equal to the second temperature difference threshold between inside and outside the barn, then the first control mark detection is performed on the target barn.

[0114] If the temperature difference between the inside and outside of the livestock shed is greater than or equal to the third temperature difference threshold, or if the temperature difference is less than or equal to the second temperature difference threshold, then the equipment in the target livestock shed will be determined to operate in positive / negative pressure ventilation mode, and the presence of the first control indicator in the target livestock shed will be detected. The positive / negative pressure ventilation mode refers to the control mode corresponding to the positive / negative pressure ventilation system.

[0115] Step 211: If the target livestock house has a first control indicator, then compare the temperature difference inside and outside the house with the temperature difference range inside and outside the house in each of the multi-level temperature difference ranges to obtain the third comparison result.

[0116] If the target livestock shed is found to have a first control indicator, it means that the target livestock shed has started the fan joint control mode. Then the temperature difference between the inside and outside of the shed can be compared with the temperature difference range between the inside and outside of each shed in the multi-level temperature difference range. The comparison result obtained is determined as the third comparison result.

[0117] Step 212: Based on the third comparison result, determine the second target indoor carbon dioxide concentration threshold from the indoor carbon dioxide concentration thresholds of each of the multi-level indoor carbon dioxide concentration thresholds.

[0118] After obtaining the third comparison result, the temperature difference range inside and outside the multi-level temperature difference range is determined as the second target temperature difference range inside and outside the building. The carbon dioxide concentration threshold inside the building that corresponds to each temperature difference range inside and outside the building in the multi-level temperature difference range is determined as the second target carbon dioxide concentration threshold inside the building.

[0119] For example: if the third comparison result is that the temperature difference between the inside and outside of the building is within the third temperature difference range between the inside and outside of the building in the multi-level temperature difference range, then this temperature difference range is determined as the second target temperature difference range between the inside and outside of the building; and the carbon dioxide concentration threshold C in the multi-level carbon dioxide concentration thresholds A, B, and C that corresponds to the second target temperature difference range (i.e., the third temperature difference range between the inside and outside of the building) is determined as the second target carbon dioxide concentration threshold in the building.

[0120] Step 213: Compare the carbon dioxide concentration inside the building with the second target carbon dioxide concentration threshold to obtain the fourth comparison result;

[0121] After obtaining the second target carbon dioxide concentration threshold, the carbon dioxide concentration in the barn can be compared with the second target carbon dioxide concentration threshold to determine the relationship between the two. A fourth comparison result can be obtained if the carbon dioxide concentration in the barn is greater than the second target carbon dioxide concentration threshold, or if the carbon dioxide concentration in the barn is less than or equal to the second target carbon dioxide concentration threshold.

[0122] Step 214: Based on the fourth comparison result, adjust the number and speed of the fans in the positive / negative pressure ventilation system.

[0123] After obtaining the fourth comparison result, if it is determined that the indoor carbon dioxide concentration is greater than the second target indoor carbon dioxide concentration threshold, then the number of fans is determined based on the second target indoor carbon dioxide concentration threshold, and the fans corresponding to the determined number of fans in the positive / negative pressure ventilation system are controlled to be constantly on at the third preset speed. The third preset speed can be a speed set according to actual needs.

[0124] If the second comparison result determines that the indoor carbon dioxide concentration is less than or equal to the second target indoor carbon dioxide concentration threshold, then all fans in the positive / negative pressure ventilation system will be shut down.

[0125] This embodiment can regulate the number and speed of fans in the positive / negative pressure ventilation system of the target livestock house based on the temperature difference between inside and outside the house and the carbon dioxide concentration inside the house, combined with the temperature difference range between inside and outside the house and the carbon dioxide concentration threshold of the house at multiple levels. This can alleviate the contradiction between heat preservation and ventilation in the livestock house, reduce energy consumption, and thus improve the efficiency of the livestock house environment regulation.

[0126] In some embodiments, if the temperature difference between the inside and outside of the barn is greater than or equal to a third temperature difference threshold between the inside and outside of the barn, or if the temperature difference between the inside and outside of the barn is less than or equal to a second temperature difference threshold between the inside and outside of the barn, then after performing the first control indicator detection on the target livestock barn, the method further includes:

[0127] Step 215: If the target livestock shed does not have the first control marker, then the target livestock shed will be tested for the second control marker.

[0128] If it is determined that the target livestock shed does not have the first control indicator, it means that the target livestock shed has not started the fan joint control mode. Then, further detection is needed to determine whether the target livestock shed has the second control indicator.

[0129] Step 216: If the target livestock shed has a second control indicator, control the fan in the positive / negative pressure ventilation system to operate at the second preset speed according to the preset intermittent operation rule.

[0130] If the target livestock shed is found to have a second control indicator, it means that the target livestock shed has activated the intermittent control mode of the fan. Then, the fan in the positive / negative pressure ventilation system is controlled to operate at the second preset speed according to the preset intermittent operation rule.

[0131] In this embodiment, when the temperature difference between the inside and outside of the target livestock house is greater than or equal to the third temperature difference threshold between the inside and outside of the house, or when the temperature difference between the inside and outside of the house is less than or equal to the second temperature difference threshold between the inside and outside of the house, and the intermittent control mode of the fan has been activated, the fan in the positive / negative pressure ventilation system is controlled to operate at the second preset speed according to the preset intermittent operation rule. This can alleviate the contradiction between livestock house insulation and ventilation, reduce energy consumption, and thereby improve the control efficiency of the livestock house environment.

[0132] In some embodiments, after comparing the temperature difference between the inside and outside of the building with a first temperature difference threshold between the inside and outside of the building, the method further includes:

[0133] Step S217: If the temperature difference between inside and outside the building is less than the first temperature difference threshold between inside and outside the building, then control the fan in the positive / negative pressure ventilation system to run at the second preset speed.

[0134] After comparing the temperature difference between the inside and outside of the building with the first temperature difference threshold between the inside and outside of the building, if it is determined that the temperature difference between the inside and outside of the building is less than the first temperature difference threshold between the inside and outside of the building, the fan in the positive / negative pressure ventilation system is controlled to run normally at the second preset speed.

[0135] In this embodiment, when the temperature difference between inside and outside the livestock shed is less than the first temperature difference threshold between inside and outside the shed, the fan in the positive / negative pressure ventilation system is controlled to run at the second preset speed. This can alleviate the contradiction between heat preservation and ventilation in the livestock shed, reduce energy consumption, and thereby improve the efficiency of the livestock shed environment control.

[0136] In some embodiments, after determining the target control mode as the first control mode, and before comparing the temperature difference between inside and outside the barn with a first temperature difference threshold, this application can also determine the temperature inside the barn. Specifically, it can determine whether the temperature inside the target barn is lower than the set temperature value; if so, heating is turned on; if not, heating is turned off. Further, it can also determine whether the temperature inside the barn is higher than a low temperature threshold; if so, it can further determine whether the temperature difference between inside and outside the barn is lower than a first temperature difference threshold; if not, a temperature alarm is triggered and ventilation is turned off.

[0137] In some embodiments, the multi-parameter control method for livestock housing environment further includes:

[0138] Step 301: Conduct third-level control marker detection on the target livestock shed;

[0139] This application can also detect whether the target livestock shed has a third control indicator.

[0140] The third control indicator is used to indicate that the target livestock shed has activated the automatic ventilation control mode.

[0141] If it is determined that there is no third control indicator in the target livestock shed, no action is required, and the user needs to manually adjust the angle of the ventilation window.

[0142] It should be noted that the initial angle of the windshield is parallel to the ground.

[0143] Step 302: If the target livestock shed has a third control indicator, then determine the pressure difference between the inside and outside of the target livestock shed, and compare the pressure difference between the inside and outside of the shed with the first pressure difference threshold and the second pressure difference threshold respectively;

[0144] The second differential pressure threshold is greater than the first differential pressure threshold.

[0145] If the target livestock shed is found to have a third control indicator, it means that the target livestock shed has activated the automatic control mode of the ventilation window. Then, the pressure difference between the inside and outside of the target livestock shed can be compared with the first pressure difference threshold and the second pressure difference threshold, respectively, in order to determine the relationship between the pressure difference between the inside and outside of the shed and the first and second pressure difference thresholds.

[0146] Step 303: If the pressure difference between the inside and outside of the shed is greater than the second pressure difference threshold or less than the first pressure difference threshold, then determine whether the number of times the ventilation window of the target livestock shed is adjusted within a preset time is less than or equal to the first preset number of times.

[0147] Step 304: If the number of times the ventilation window of the target livestock shed is adjusted within a preset time is less than or equal to the first preset number of times, then determine whether the pressure difference between the inside and outside of the shed is less than the first pressure difference threshold.

[0148] Step 305: If the pressure difference between the inside and outside of the building is less than the first pressure difference threshold, then the angle of the windshield is reduced upward or downward based on the first angle threshold; if the pressure difference between the inside and outside of the building is greater than or equal to the first pressure difference threshold, then the angle of the windshield is increased upward or downward based on the first angle threshold.

[0149] Step 306: Determine whether the angle value of the windshield is the second angle threshold or the third angle threshold;

[0150] Step 307: If the angle value of the ventilation window is not the second angle threshold or the third angle threshold, determine whether the number of times the ventilation window is adjusted within a preset time is greater than the second preset number; if it is determined that the number of times the ventilation window is adjusted within a preset time is greater than the second preset number, determine whether the pressure difference between inside and outside the shed is less than the first pressure difference threshold; if yes, control the fan of the target livestock shed to increase the third preset speed; if no, control the fan of the target livestock shed to decrease the third preset speed.

[0151] It should be noted that the maximum opening angle of the vent is 90° perpendicular to the vertical wall. The vent can be raised or lowered. The adjustable vent angle is 0-90°, with the extreme angles being XX° and 90° respectively.

[0152] Step 308: If the angle of the windshield is the second angle threshold or the third angle threshold, determine whether the pressure difference between the inside and outside of the shed is less than the first pressure difference threshold; if so, control the fan of the target shed to increase the third preset speed; if not, control the fan of the target shed to decrease the third preset speed.

[0153] If it is determined through comparison that the pressure difference between the inside and outside of the shed is greater than the second pressure difference threshold or less than the first pressure difference threshold, then it is determined whether the number of times the ventilation window of the target livestock shed is adjusted within a preset time is less than or equal to the first preset number of times; wherein, the preset time and the first preset number of times can be set according to actual needs.

[0154] If the number of times the ventilation window of the target livestock shed is adjusted within a preset time is less than or equal to the first preset number of times, then it is determined whether the pressure difference between the inside and outside of the shed is less than the first pressure difference threshold.

[0155] If the pressure difference between the inside and outside of the building is less than the first pressure difference threshold, the angle of the windshield is reduced upward or downward based on the first angle threshold; if the pressure difference between the inside and outside of the building is greater than or equal to the first pressure difference threshold, the angle of the windshield is increased upward or downward based on the first angle threshold; wherein, the first angle threshold is an angle value set according to actual needs.

[0156] Determine whether the window angle value is at the second or third angle threshold; where the second and third angle thresholds are two extreme angles, such as XX° and 90°.

[0157] If the angle value of the ventilation window is not the second angle threshold or the third angle threshold, then determine whether the number of times the ventilation window is adjusted within the preset time is greater than the second preset number; if it is determined that the number of times the ventilation window is adjusted within the preset time is greater than the second preset number, then determine whether the pressure difference between the inside and outside of the shed is less than the first pressure difference threshold; if yes, then control the fan of the target livestock shed to increase the third preset speed; if no, then control the fan of the target livestock shed to decrease the third preset speed; wherein, the second preset number is a value set according to actual needs, and the third preset speed is a speed value set according to actual needs.

[0158] If the angle of the ventilation window is the second or third angle threshold, then determine whether the pressure difference between the inside and outside of the shed is less than the first pressure difference threshold; if so, control the fan of the target shed to increase the third preset speed; if not, control the fan of the target shed to decrease the third preset speed.

[0159] This embodiment can also automatically adjust the windows of the target livestock shed when the automatic window control mode is already turned on, which can alleviate the contradiction between insulation and ventilation in the livestock shed, reduce energy consumption, and thus improve the efficiency of livestock shed environment control.

[0160] Figure 2 This is a flowchart illustrating the first control mode of the multi-parameter control method for livestock housing environment provided in this application embodiment. (Refer to...) Figure 2 When the target control mode is determined to be the first control mode, the indoor temperature can be judged. Specifically, it can be judged whether the indoor temperature (Tdb, i) of the target livestock shed is less than the indoor temperature setpoint (Tset, i). If so, heating is turned on; otherwise, heating is turned off. Furthermore, it can be judged whether the indoor temperature (Tset, i) is greater than a low temperature threshold X℃. If so, it can be further judged whether the temperature difference between the inside and outside of the shed (ΔT) is less than the first temperature difference threshold between the inside and outside of the shed (ΔTset, s). If not, a temperature alarm is issued, ventilation is turned off, and the system waits for the next indoor temperature judgment.

[0161] If the temperature difference between the inside and outside of the building is less than the first temperature difference threshold between the inside and outside of the building, the positive / negative pressure fan will be kept running at XX% speed and the building will wait for the next temperature assessment.

[0162] If the temperature difference between the inside and outside of the building is greater than or equal to the first temperature difference threshold, it is determined whether the temperature difference is greater than the set low value (ΔTset, l) but less than the set high value (ΔTset, h). If so, it operates in sensible heat recovery ventilation mode; otherwise, it operates in positive / negative pressure ventilation mode. Further, it is determined whether to activate the combined control of the temperature difference and CO2. If not, time control is activated, and the fan is controlled to switch on and off intermittently for XX minutes, waiting for the next temperature assessment of the building's interior.

[0163] If the combined control of indoor and outdoor temperature difference and CO2 is activated, the system determines the current indoor and outdoor temperature difference range and the CO2 threshold (Cset, i) set by the fan control, and then checks whether the indoor carbon dioxide concentration (Ci) is greater than the CO2 threshold (Cset, i). If so, the fan is started at a set speed of XX%, and the system waits for the next indoor temperature assessment. If not, the fan is shut down, and the system waits for the next indoor temperature assessment. Each indoor and outdoor temperature difference range corresponds to a CO2 threshold. For example, the indoor and outdoor temperature difference range ΔT1 corresponds to the CO2 threshold C1, the range ΔT1~2 corresponds to the CO2 thresholds C1~2, and the range ΔTn-1 corresponds to the CO2 thresholds Cn-1~n.

[0164] On the other hand, ventilation window adjustment is possible. It should be noted that when adjusting the ventilation window angle, the window is initially parallel to the ground. Further, it checks whether automatic mode is enabled. If not, no adjustment is made, and the user needs to manually adjust the window to XX% and wait for the next window angle adjustment. If automatic mode is enabled, it checks whether the pressure difference between the inside and outside of the shed is less than the first pressure difference threshold P1 or greater than the second pressure difference threshold P2. If not, it maintains the current window angle and waits for the next window angle adjustment. If so, it checks whether the number of times the target livestock shed's ventilation windows have been adjusted within X hours is less than or equal to the first preset number X.

[0165] If the number of times the ventilation windows of the target livestock shed are adjusted within X hours exceeds the first preset number X, a differential pressure alarm will be triggered to remind the livestock personnel to investigate the cause and wait for the next ventilation window adjustment. If the number of times the ventilation windows of the target livestock shed are adjusted within X hours is less than or equal to the first preset number X, it will be determined whether the pressure difference P between the inside and outside of the shed is less than the first differential pressure threshold P1.

[0166] If the pressure difference P between the inside and outside of the building is less than the first pressure difference threshold P1, the window angle is reduced by XX% upward or downward, and the next window adjustment is performed after a delay of XX minutes; if the pressure difference P between the inside and outside of the building is greater than or equal to the first pressure difference threshold P1, the window angle is increased by XX% upward or downward, and the next window adjustment is performed after a delay of XX minutes.

[0167] Further, determine whether the angle value of the windshield is the second angle threshold XX° or the third angle threshold 90°.

[0168] If the angle of the ventilation window is not the second angle threshold XX° or the third angle threshold 90°, then it is further determined whether the number of times the ventilation window has been adjusted within X hours is greater than the second preset number Y; if it is determined that the number of times the ventilation window has been adjusted within X hours is less than or equal to the second preset number Y, then the next ventilation window adjustment is performed after a delay of XX minutes; if it is determined that the number of times the ventilation window has been adjusted within X hours is greater than the second preset number Y, then it is determined whether the pressure difference P between the inside and outside of the shed is less than the first pressure difference threshold P1; if yes, then the speed of the exhaust fan of the target livestock shed is increased by the third preset speed XX%, and the next ventilation window adjustment is performed after a delay of XX minutes; if no, then the speed of the exhaust fan of the target livestock shed is decreased by the third preset speed XX%, and the next ventilation window adjustment is performed after a delay of XX minutes.

[0169] If the angle of the ventilation window is the second angle threshold XX° or the third angle threshold 90°, then determine whether the pressure difference P inside and outside the shed is less than the first pressure difference threshold P1; if so, increase the speed of the exhaust fan of the target shed to the third preset speed XX%, and delay for XX minutes before the next ventilation window adjustment; if not, decrease the speed of the exhaust fan of the target shed to the third preset speed XX%, and delay for XX minutes before the next ventilation window adjustment.

[0170] Figure 3 This is a flowchart illustrating the second control mode in the multi-parameter control method for livestock housing environment provided in this application embodiment. (Refer to...) Figure 3 In some embodiments, if the target control mode is the second control mode, namely the summer control mode (or simply the summer mode), the ventilation windows of the target livestock shed can be adjusted. It should be noted that when adjusting the window angle, the window angle is initially parallel to the ground. Further, it is determined whether the automatic mode is enabled. If not, no adjustment is made, and the user needs to manually adjust the window to XX%, and wait for the next window adjustment. If enabled, it is determined whether the pressure difference between the inside and outside of the shed is less than the first pressure difference threshold P1 or greater than the second pressure difference threshold P2. Otherwise, the current window angle is maintained, and the user waits for the next window angle adjustment. If so, it is determined whether the number of times the target livestock shed's ventilation windows are adjusted within X hours is less than or equal to the first preset number X.

[0171] If the number of times the ventilation windows of the target livestock shed are adjusted within X hours exceeds the first preset number X, a differential pressure alarm will be triggered to remind the livestock personnel to investigate the cause and wait for the next ventilation window adjustment. If the number of times the ventilation windows of the target livestock shed are adjusted within X hours is less than or equal to the first preset number X, it will be determined whether the pressure difference P between the inside and outside of the shed is less than the first differential pressure threshold P1.

[0172] If the pressure difference P between the inside and outside of the building is less than the first pressure difference threshold P1, the window angle is reduced by XX% upward or downward, and the next window adjustment is performed after a delay of XX minutes; if the pressure difference P between the inside and outside of the building is greater than or equal to the first pressure difference threshold P1, the window angle is increased by XX% upward or downward, and the next window adjustment is performed after a delay of XX minutes.

[0173] Further, determine whether the angle value of the windshield is the second angle threshold XX° or the third angle threshold 90°.

[0174] If the angle of the ventilation window is not the second angle threshold XX° or the third angle threshold 90°, then it is further determined whether the number of times the ventilation window has been adjusted within X hours is greater than the second preset number Y; if it is determined that the number of times the ventilation window has been adjusted within X hours is less than or equal to the second preset number Y, then the next ventilation window adjustment is performed after a delay of XX minutes; if it is determined that the number of times the ventilation window has been adjusted within X hours is greater than the second preset number Y, then it is determined whether the pressure difference P between the inside and outside of the shed is less than the first pressure difference threshold P1; if yes, then the speed of the exhaust fan of the target livestock shed is increased by the third preset speed XX%, and the next ventilation window adjustment is performed after a delay of XX minutes; if no, then the speed of the exhaust fan of the target livestock shed is decreased by the third preset speed XX%, and the next ventilation window adjustment is performed after a delay of XX minutes.

[0175] If the angle of the ventilation window is the second angle threshold XX° or the third angle threshold 90°, then determine whether the pressure difference P inside and outside the shed is less than the first pressure difference threshold P1; if so, then increase the speed of the exhaust fan of the target livestock shed by the third preset speed XX%, and delay for XX minutes before the next ventilation window adjustment; if not, then decrease the speed of the exhaust fan of the target livestock shed by the third preset speed XX%, and delay for XX minutes before the next ventilation window adjustment.

[0176] On the other hand, it can be determined whether the indoor temperature (Tdb, i) is greater than the preset indoor temperature threshold (Tset, i). If not, the fan is adjusted. When adjusting the fan, the user can select longitudinal / lateral ventilation according to actual needs. The indoor temperature is then further determined. The indoor temperature (Tdb, i) is again determined to be greater than the preset indoor temperature threshold (Tset, i). The preset indoor temperature threshold is a value that can be set according to actual needs. If the indoor temperature is determined to be less than or equal to the preset indoor temperature threshold, the fan is controlled to maintain a base speed of XX% and remain on until the next longitudinal / lateral ventilation selection. The base speed of XX% can be set based on the ventilation volume calculated or summarized from livestock ventilation parameters, carbon dioxide, water vapor, heat balance, air exchange rate, experience, etc.

[0177] If the indoor temperature is determined to be higher than the preset indoor temperature threshold, then it is determined whether the indoor temperature has increased or decreased by XX℃ compared to the set value. If it is determined that the indoor temperature has increased or decreased by XX℃ compared to the set value, then the variable frequency speed of the fan is increased or decreased by XX%, and the system waits for the next longitudinal / lateral ventilation selection.

[0178] Furthermore, if the indoor temperature (Tdb,i) is greater than the preset indoor temperature threshold (Tset,i), then it is determined whether the outdoor temperature (Tdb,o) is greater than the preset outdoor temperature threshold (Tset,o) and whether the outdoor humidity (RHo) is less than the preset outdoor humidity threshold (RHset,o). If either the outdoor temperature or the outdoor humidity does not meet the above conditions, the water pump of the evaporative cooling pad is shut off, and the system waits for the next indoor temperature determination.

[0179] If it is determined that the indoor temperature of the target livestock shed is greater than the preset indoor temperature threshold, the outdoor temperature is greater than the preset outdoor temperature threshold, and the outdoor humidity is less than the preset outdoor humidity threshold, the water pump of the evaporative cooling pad can be turned on. The preset indoor and outdoor temperature thresholds are temperature values ​​that can be set according to actual needs; the preset outdoor humidity threshold is a humidity value that can be set according to actual needs.

[0180] It should be noted that the flow meter is used to control the water supply and the humidity is determined by the wet curtain in the water replenishment time control. Both are optional logics. When the corresponding flow meter and wet curtain humidity meter are installed in the building, this control logic can be turned on.

[0181] After the water pump is turned on, determine whether the water flow rate control is enabled. If the water flow rate control is enabled, determine whether to use a flow meter or water flow time to regulate the water supply. If the flow meter is selected to regulate the water supply, set a fixed water supply for each cycle based on the actual water demand of the evaporative cooling pad. If the water flow time is selected to regulate the water flow, adjust the water flow time based on the actual water demand of the evaporative cooling pad, for example, set the water flow duration to XX minutes.

[0182] Furthermore, based on the selected water spray volume control, it is necessary to replenish water to keep the evaporative cooling pads moist. Therefore, it is necessary to determine when to replenish water. The water replenishment time can be controlled by time or the humidity at the cooling pad end. If time-based control is selected, water is replenished after XX minutes, based on the local evaporation time of the cooling pads, to maintain continuous moisture. Setting it to 0 minutes results in continuous water supply. If humidity at the cooling pad end is selected to determine the water replenishment time, a humidity probe is installed in the area near the cooling pads inside the building. When the cooling pads are fully wet, the humidity at the cooling pad end will reach over 90%. As the cooling pads dry, the humidity at the cooling pad end will decrease sharply. By setting an appropriate threshold, it is possible to determine whether the cooling pads have completely evaporated and the degree of evaporation. When the humidity at the cooling pad end is less than the set humidity value, water is replenished. The water spray volume is controlled according to the water spray volume control procedure in the previous step.

[0183] It should be noted that water replenishment based on humidity at the evaporative cooling pad end is more timely and accurate than time-based judgment. This is because water replenishment timing is affected by local temperature, humidity, and sunlight. The evaporation time of the cooling pad varies under different weather conditions, easily leading to untimely or excessive water replenishment. In contrast, using a humidity probe at the evaporative cooling pad end inside the barn allows for real-time assessment of the pad's dryness, unaffected by external weather conditions. However, this method requires the installation of an additional humidity probe at the evaporative cooling pad end inside the barn. This probe is prone to damage under prolonged high humidity, increasing environmental control costs. Therefore, livestock farms can select and adjust different control logics according to their specific needs.

[0184] Further, determine whether the sudden drop prevention procedure was activated for the first time that day; if not, wait for the next temperature assessment inside the building.

[0185] If it is determined that the anti-sudden temperature drop procedure is being activated for the first time that day, then the anti-sudden temperature drop measures corresponding to the anti-sudden temperature drop mode will be implemented, and the system will wait for the next indoor temperature assessment. Specifically, after the evaporative cooling pad is activated, the fan speed will be reduced to a preset speed value of XX, and within a preset time of XX minutes, the fan speed will be gradually increased to another preset speed value. All the preset speed values ​​and preset times mentioned above can be set according to actual needs.

[0186] It should be noted that the control logic for the water spray volume and water replenishment time of the evaporative cooling pads in this application can be selected according to different operating conditions. When the evaporative cooling pads in livestock farms are not equipped with water storage tanks and water circulation systems, water and electricity consumption of the evaporative cooling pads can be saved through the control of water spray volume and water replenishment time. Managers can choose whether to activate the anti-sudden drop program based on whether there is a problem of sudden drop in evaporative cooling pad temperature during the initial start-up period in the local area.

[0187] Figure 4 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 4 As shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430, and a communication bus 440, wherein the processor 410, the communication interface 420, and the memory 430 communicate with each other via the communication bus 440. The processor 410 can call the computer program in the memory 430 to execute the steps of a multi-parameter control method for the livestock housing environment, such as including:

[0188] Determine the temperature difference between the inside and outside of the target livestock shed and the carbon dioxide concentration inside the shed;

[0189] Based on the temperature difference between the inside and outside of the shed and the carbon dioxide concentration inside the shed, combined with the multi-level temperature difference range between the inside and outside of the shed and the multi-level carbon dioxide concentration threshold, the fans of the target livestock shed are regulated.

[0190] The multi-level indoor and outdoor temperature difference range includes multiple different indoor and outdoor temperature difference ranges; the multi-level indoor carbon dioxide concentration threshold includes multiple indoor carbon dioxide concentration thresholds that correspond one-to-one with each indoor and outdoor temperature difference range in the multi-level indoor and outdoor temperature difference range.

[0191] Furthermore, the logical instructions in the aforementioned memory 430 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0192] On the other hand, embodiments of this application also provide a storage medium, which is a computer-readable storage medium storing a computer program. The computer program is used to cause a processor to execute the steps of the methods provided in the above embodiments, including, for example:

[0193] Determine the temperature difference between the inside and outside of the target livestock shed and the carbon dioxide concentration inside the shed;

[0194] Based on the temperature difference between the inside and outside of the shed and the carbon dioxide concentration inside the shed, combined with the multi-level temperature difference range between the inside and outside of the shed and the multi-level carbon dioxide concentration threshold, the fans of the target livestock shed are regulated.

[0195] The multi-level indoor and outdoor temperature difference range includes multiple different indoor and outdoor temperature difference ranges; the multi-level indoor carbon dioxide concentration threshold includes multiple indoor carbon dioxide concentration thresholds that correspond one-to-one with each indoor and outdoor temperature difference range in the multi-level indoor and outdoor temperature difference range.

[0196] The computer-readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic storage (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)), optical storage (e.g., CD, DVD, BD, HVD), and semiconductor storage (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)).

[0197] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0198] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for multi-parameter regulation of a livestock house environment, characterized in that, The method comprises the following steps: determining the temperature difference between the inside and outside of the target livestock house and the carbon dioxide concentration in the inside of the target livestock house; the temperature difference between the inside and outside of the house is obtained by calculating the difference between the measured temperature in the inside of the target livestock house and the temperature outside the house; based on the temperature difference between the inside and outside of the house, the carbon dioxide concentration in the inside of the house, combined with the multi-level temperature difference range between the inside and outside of the house and the multi-level carbon dioxide concentration threshold in the inside of the house, the fan of the target livestock house is regulated; wherein the multi-level temperature difference range between the inside and outside of the house comprises a plurality of different temperature difference ranges between the inside and outside of the house; the multi-level carbon dioxide concentration threshold in the inside of the house comprises a plurality of carbon dioxide concentration thresholds in the inside of the house corresponding to each temperature difference range between the inside and outside of the house in the multi-level temperature difference range between the inside and outside of the house; the target livestock house comprises a sensible heat recovery ventilation system and a positive / negative pressure ventilation system; based on the temperature difference between the inside and outside of the house, the carbon dioxide concentration in the inside of the house, combined with the multi-level temperature difference range between the inside and outside of the house and the multi-level carbon dioxide concentration threshold in the inside of the house, the fan of the target livestock house is regulated, which comprises: determining the target regulation mode from the preset regulation mode according to the temperature in the inside of the target livestock house; each preset regulation mode corresponds to a different temperature range in the inside of the house; the preset regulation mode at least comprises a first regulation mode; if the target regulation mode is the first regulation mode, the temperature difference between the inside and outside of the house is compared with the first temperature difference threshold between the inside and outside of the house; if the temperature difference between the inside and outside of the house is greater than or equal to the first temperature difference threshold between the inside and outside of the house, the temperature difference between the inside and outside of the house is compared with the second temperature difference threshold between the inside and outside of the house, and the temperature difference between the inside and outside of the house is compared with the third temperature difference threshold between the inside and outside of the house; wherein the second temperature difference threshold between the inside and outside of the house is less than the third temperature difference threshold between the inside and outside of the house; if the temperature difference between the inside and outside of the house is less than the third temperature difference threshold between the inside and outside of the house and greater than the second temperature difference threshold between the inside and outside of the house, the first regulation mark detection is performed on the target livestock house; if the target livestock house has the first regulation mark, the temperature difference between the inside and outside of the house is compared with each temperature difference range between the inside and outside of the house in the multi-level temperature difference range between the inside and outside of the house, to obtain the first comparison result; wherein the first regulation mark is used to represent that the target livestock house has started the fan combined regulation mode; determining the first target carbon dioxide concentration threshold in the inside of the house from each carbon dioxide concentration threshold in the inside of the house in the multi-level carbon dioxide concentration threshold in the inside of the house according to the first comparison result; comparing the carbon dioxide concentration in the inside of the house with the first target carbon dioxide concentration threshold in the inside of the house to obtain the second comparison result; regulating the number and speed of the fan in the sensible heat recovery ventilation system according to the second comparison result; after comparing the temperature difference between the inside and outside of the house with the second temperature difference threshold between the inside and outside of the house, and comparing the temperature difference between the inside and outside of the house with the third temperature difference threshold between the inside and outside of the house, it further comprises: if the temperature difference between the inside and outside of the house is greater than or equal to the third temperature difference threshold between the inside and outside of the house, or the temperature difference between the inside and outside of the house is less than or equal to the second temperature difference threshold between the inside and outside of the house, the first regulation mark detection is performed on the target livestock house; if the target livestock house has the first regulation mark, the temperature difference between the inside and outside of the house is compared with each temperature difference range between the inside and outside of the house in the multi-level temperature difference range between the inside and outside of the house, to obtain the third comparison result; determining a second target indoor carbon dioxide concentration threshold from the plurality of indoor carbon dioxide concentration thresholds according to the third comparison result; comparing the indoor carbon dioxide concentration with the second target indoor carbon dioxide concentration threshold to obtain a fourth comparison result; controlling the number and rotating speed of the fans in the positive / negative pressure ventilation system according to the fourth comparison result.

2. The method according to claim 1, c h a r a c t e r i z e d b y The controlling the number and rotating speed of the fans in the sensible heat recovery ventilation system according to the second comparison result comprises any one of the following: if the second comparison result is that the indoor carbon dioxide concentration is greater than the first target indoor carbon dioxide concentration threshold, determining the number of fans based on the first target indoor carbon dioxide concentration threshold, and controlling the fans corresponding to the number of fans in the sensible heat recovery ventilation system to be always on at a first preset rotating speed; if the second comparison result is that the indoor carbon dioxide concentration is less than or equal to the first target indoor carbon dioxide concentration threshold, controlling all the fans in the sensible heat recovery ventilation system to stop running.

3. The method according to claim 1, c h a r a c t e r i z e d b y If the indoor-outdoor temperature difference is less than the third indoor-outdoor temperature difference threshold and greater than the second indoor-outdoor temperature difference threshold, after the first control identifier detection of the target livestock house, the method further comprises: if the target livestock house does not have a first control identifier, performing a second control identifier detection on the target livestock house; if the target livestock house has a second control identifier, controlling the fans in the sensible heat recovery ventilation system to run according to a preset intermittent running rule at a second preset rotating speed; wherein the second control identifier represents that the target livestock house has started an intermittent control mode of the fans.

4. The method of claim 1, wherein, If the indoor-outdoor temperature difference is greater than or equal to the third indoor-outdoor temperature difference threshold, or the indoor-outdoor temperature difference is less than or equal to the second indoor-outdoor temperature difference threshold, after the first control identifier detection of the target livestock house, the method further comprises: if the target livestock house does not have a first control identifier, performing a second control identifier detection on the target livestock house; if the target livestock house has a second control identifier, controlling the fans in the positive / negative pressure ventilation system to run according to a preset intermittent running rule at a second preset rotating speed.

5. The method of claim 1, wherein, After comparing the indoor-outdoor temperature difference with the first indoor-outdoor temperature difference threshold, the method further comprises: if the indoor-outdoor temperature difference is less than the first indoor-outdoor temperature difference threshold, controlling the fans in the positive / negative pressure ventilation system to run at a second preset rotating speed.

6. The method of claim 1, wherein, The method further comprises: performing a third control identifier detection on the target livestock house; if the target livestock house has a third control identifier, determining an indoor-outdoor pressure difference of the target livestock house, and comparing the indoor-outdoor pressure difference with a first pressure difference threshold and a second pressure difference threshold respectively; wherein the third control identifier represents that the target livestock house has started an automatic control mode of the air window; the second pressure difference threshold is greater than the first pressure difference threshold; if the indoor-outdoor pressure difference is greater than the second pressure difference threshold or less than the first pressure difference threshold, determining whether the adjustment times of the air window of the target livestock house within a preset time are less than or equal to a first preset number of times; determining whether the pressure difference between the inside and outside of the target livestock house is less than the first pressure difference threshold value; if the pressure difference between the inside and outside of the target livestock house is less than the first pressure difference threshold value, lowering the angle of the air window upward or downward based on a first angle threshold value, and if the pressure difference between the inside and outside of the target livestock house is greater than or equal to the first pressure difference threshold value, increasing the angle of the air window upward or downward based on the first angle threshold value; determining whether the angle value of the air window is a second angle threshold value or a third angle threshold value; if the angle value of the air window is not the second angle threshold value or the third angle threshold value, determining whether the number of adjustments of the air window within a preset time is greater than a second preset number, and if it is determined that the number of adjustments of the air window within a preset time is greater than a second preset number, determining whether the pressure difference between the inside and outside of the target livestock house is less than the first pressure difference threshold value, and if yes, controlling the fan of the target livestock house to increase a third preset rotating speed, and if no, controlling the fan of the target livestock house to decrease the third preset rotating speed; if the angle value of the air window is the second angle threshold value or the third angle threshold value, determining whether the pressure difference between the inside and outside of the target livestock house is less than the first pressure difference threshold value, and if yes, controlling the fan of the target livestock house to increase the third preset rotating speed, and if no, controlling the fan of the target livestock house to decrease the third preset rotating speed.

7. An electronic device comprising a processor and a memory having a computer program stored therein, characterized in that The computer program is executed by the processor to implement the livestock house environment multi-parameter control method of any one of claims 1 to 6.

8. A storage medium, which is a computer-readable storage medium, comprising a computer program, characterized in that, The computer program is executed by the processor to implement the livestock house environment multi-parameter control method of any one of claims 1 to 6.

Images