Pig house intelligent temperature control system and method

Abstract

The invention provides an intelligent temperature control system and method for a hog house, and belongs to the field of breeding devices. The system comprises a light-transmitting shed roof, a power generation device, an energy storage device connected with the power generation device, a first heating device, a second heating device, a circulating pump, a heat exchange medium storage tank, a flow path switching valve, an environment sensor and an intelligent regulation and control unit. The top of the pig house is covered with the light-transmitting shed roof, and a loop channel allowing the heat exchange medium to circulate is arranged in the light-transmitting shed roof. According to the system, the light-transmitting shed roof is arranged and matched with the circulating pump and the flow path switching valve, cooperation of natural lighting and photo-thermal / photoelectric energy conversion is achieved, the proportion of electricity generation and heat supply is flexibly distributed, and the utilization rate of sunlight is increased.

Description

Technical Field

[0001] This invention relates to the field of breeding equipment technology, specifically to an intelligent temperature control system and method for pigsties. Background Technology

[0002] In modern pig farming, the temperature, humidity, and light conditions of the pig house environment have a significant impact on the growth rate, immunity, and reproductive performance of pigs. Generally, piglets from birth to 4 months of age are recommended to receive 18 hours of light per day, with the light intensity controlled at 50-100 lux. Growing-finishing pigs are recommended to receive no more than 10 hours of light per day, with an intensity of 40-50 lux. However, traditional pig houses often use a closed structure, which reduces the entry of natural light in order to keep warm or prevent external interference. This prevents the benefits of natural light in regulating biological rhythms, improving feeding behavior, and promoting vitamin D synthesis from being realized. Traditional natural light pig houses cannot automatically adjust the daily light requirements, and although temperature-controlled pig house systems in traditional pig houses can maintain a suitable temperature through electric heating, underfloor heating pipes, or air source heat pumps, their design focuses more on temperature and humidity control, neglecting the importance of light regulation.

[0003] In addition, although some improved structures based on photovoltaic power generation or geothermal energy supply have attempted to optimize energy utilization, they still have shortcomings such as photovoltaic modules blocking natural light across the entire spectrum and prominent contradictions between light collection and power generation.

[0004] Therefore, there is an urgent need for a green and energy-saving structure that can make full use of natural light and achieve adaptive temperature regulation in pigsties, so as to improve the health of pigs and reduce energy consumption while ensuring a comfortable breeding environment. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent temperature control system and method for pigsties with natural lighting and temperature adaptive regulation functions. By optimizing the structural design of pigsties and energy utilization methods, the system aims to achieve the goal of promoting healthy growth of pigs, improving immunity and production performance through sunlight.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The first aspect of the present invention provides an intelligent temperature control system for pigsties, the system comprising: a light-transmitting roof, a power generation device, an energy storage device connected to the power generation device, a first heating device, a second heating device, a circulating pump, a heat exchange medium storage tank, a flow path switching valve, an environmental sensor, and an intelligent control unit.

[0008] A translucent roof covers the top of the pigsty. The translucent roof contains a loop channel for the circulation of heat exchange medium, which is connected to a heat exchange medium storage tank. The hot end of a power generation device is connected to the loop channel of the heat exchange medium within the translucent roof. A first heating device and a second heating device are embedded in the pigsty floor. The first and second heating devices are electrically connected to an energy storage device, and the heat source side of the second heating device is connected to the heat exchange medium loop channel of the translucent roof. A circulating pump is installed on the heat exchange medium loop channel within the translucent roof. Flow path switching valves are installed on the pipes connecting the heat exchange medium storage tank, the power generation device, and the second heating device to the heat exchange medium loop channel within the translucent roof.

[0009] The intelligent control unit is electrically connected to the power generation device, energy storage device, circulating pump, flow path switching valve, first heating device, second heating device, and environmental sensor. The intelligent control unit is configured as follows:

[0010] Based on the data from the environmental sensors, sunlight intensity, and the preset growth stage requirements of the pigs, the operating power of the first heating device and the second heating device are controlled, and the replacement of the heat exchange medium is controlled.

[0011] By controlling the flow rate of the circulating pump and the switching of the flow path switching valve, the proportion of heat energy distributed from the light-transmitting canopy to the power generation device and the second heating device is adjusted.

[0012] Furthermore, the translucent roof includes double-layered glass, a translucent film, and a roof support frame; the translucent film covers the roof support frame, and the double-layered glass covers the translucent film; the heat exchange medium circuit channel is located inside the double-layered glass; the heat exchange medium storage tank includes a first storage tank and a second storage tank, which respectively store heat exchange media with different optical properties; the first heating device is an electric heating film, and the second heating device includes a heat pump, the evaporation side of the heat pump constitutes the heat source side of the second heating device, and exchanges heat with the heat exchange medium circuit channel inside the translucent roof; the condensation side of the heat pump is connected to the underfloor heating pipe buried in the pigsty floor, and the heat pump is electrically connected to the energy storage device; the electric heating film is laid on top of the underfloor heating pipe.

[0013] Furthermore, the pigsty is divided into multiple areas by setting up a partition device; the light-transmitting roof is equipped with a corresponding number of heat exchange medium loop channel units according to the area, and each heat exchange medium loop channel unit is independent of each other; each area is equipped with an independent first heating device and a second heating device, and the second heating device is connected to the heat exchange medium loop channel unit of the corresponding area to form a closed loop path.

[0014] Furthermore, the heat exchange medium circuit channel includes multiple transparent heat collection tubes, which are arranged in rows and columns, and adjacent transparent heat collection tubes in each column are sealed and connected by a U-shaped glass tube.

[0015] Furthermore, the system further includes a movable heat preservation quilt, which covers the light-transmitting shed roof and is configured to partially or completely cover the light-transmitting shed roof when in the working state.

[0016] Furthermore, the environmental sensor includes a temperature sensor and a harmful gas concentration sensor.

[0017] The second aspect of the present invention provides a method for intelligent temperature control in a pigsty, which adopts the intelligent temperature control system described in the first aspect above, and specifically includes the following steps:

[0018] Obtain parameter information, including the temperature of the pigsty, the light intensity, and the growth stage of pigs; based on the parameter information, calculate the energy distribution coefficient K;

[0019] According to the energy distribution coefficient K, perform one or more of the following controls:

[0020] A. When preferentially generating electricity, control the flow path switching valve to direct the heat exchange medium flowing out of the light-transmitting shed roof to the power generation device, and control the circulation pump to operate at a first flow rate so that the temperature of the heat exchange medium reaches the high-efficiency power generation range;

[0021] B. When it is necessary to balance heat supply and power generation, control the flow path switching valve to direct the heat exchange medium flowing out of the light-transmitting shed roof to the power generation device and the second heating device simultaneously or at different times, and control the circulation pump to operate at a second flow rate different from the first flow rate; regulate the energy storage device to supply power to the first heating device; control the operating powers of the first heating device and the second heating device so that the temperature of the pigsty reaches the target temperature corresponding to each growth stage of the pigs;

[0022] C. When the solar thermal energy is insufficient, control the flow path switching valve to close the path leading to the second heating device, control the circulation pump to operate at a low speed or stop, regulate the energy storage device to supply power to the first heating device and the second heating device; control the operating powers of the first heating device and the second heating device so that the temperature of the pigsty reaches the target temperature corresponding to each growth stage of the pigs;

[0023] D. Control the heat preservation quilt to completely cover the light-transmitting shed roof or put away the heat preservation quilt;

[0024] E. Adjust the heat exchange medium in the heat exchange medium circuit channel according to the solar light intensity and the growth stage of the pigs.

[0025] Furthermore, when the energy distribution coefficient K≥0.7, it is the preferential power generation stage; when 0.3<K<0.7, it is the stage of needing to balance heat supply and power generation, and when K≤0.3, it is the stage of insufficient light.

[0026] Furthermore, the energy allocation coefficient K is given by the following formula:

[0027] Where α and β are weighting factors.

[0028] Furthermore, the method also includes the following steps: when the harmful gas concentration sensor detects that the harmful gas concentration exceeds the standard, the power of the first heating device and the second heating device is reduced, and the dry manure cleaning device and the ventilation system are started at the same time.

[0029] Compared with the prior art, the present invention has the following technical advantages:

[0030] The system described in this invention, by incorporating a translucent roof and a circulating pump with a flow path switching valve, achieves synergy between natural lighting and photothermal / photovoltaic energy conversion, flexibly allocating the ratio of power generation to heating and improving the utilization rate of sunlight. The translucent roof allows full-spectrum light to enter, promoting vitamin D synthesis and bone development in pigs, enhancing immunity, and is particularly beneficial for the growth of piglets in the nursery period. In summer, when sunlight is intense, the system can utilize natural light for sterilization while simultaneously increasing the speed of the circulating pump to lower the medium temperature and prevent overheating of the pigsty. In winter, the speed of the circulating pump is reduced to increase the medium temperature, driving the power generation device to convert heat energy into electrical energy, which is then stored and used by the primary heating device.

[0031] The system described in this invention alters the light intensity inside pigsties by switching the heat exchange medium within the transparent heat collection tubes. During the nursery period or winter, the system uses a transparent, light-transmitting fluid to maximize natural light transmission, utilizing full-spectrum light to promote piglet bone development and vitamin D synthesis. During the fattening period or summer, the system switches to a dark-colored heat-absorbing fluid, improving heat collection efficiency for power generation or heating while actively reducing the light intensity inside the pigsty. This effectively alleviates heat stress in fattening pigs and reduces agitation and aggression caused by strong light, minimizing energy consumption and promoting healthy pig fattening.

[0032] The system described in this invention is equipped with a first heating device and a second heating device, which significantly improves energy utilization efficiency and system stability.

[0033] Using the system of the present invention, by introducing an energy distribution coefficient K, when K ≥ 0.7, the light-transmitting roof is preferentially used for power generation; when 0.3 < K < 0.7, the proportion of power generation by the light-transmitting roof and the overall energy consumption of the system is balanced, and the first heating device and the second heating device are enabled simultaneously to ensure the stability of the system; when K ≤ 0.3, the light-transmitting roof stops providing heat energy to the second heating device, and the energy storage device supplies power to effectively cope with the situation of insufficient energy supply. By introducing the energy distribution coefficient K, dynamic optimization of energy distribution is achieved. This method determines the specific distribution of the heat collected by the light-transmitting roof according to the energy priority coefficient K, and adjusts the proportion of the power generation wattage of the light-transmitting roof and the overall energy consumption of the system accordingly, so as to rationally utilize the heat collected by the light-transmitting roof and avoid waste caused by simply using electric energy or simply using heat energy.

[0034] From the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will more clearly understand the above and other objects, advantages and features of the present invention. Brief Description of the Drawings

[0035] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the accompanying drawings in an exemplary but not restrictive manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0036] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the accompanying drawings in an exemplary but not restrictive manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0037] Figure 1 is a partial three-dimensional sectional view of a pigsty in a pigsty temperature control system according to an embodiment of the present invention;

[0038] Figure 2 is a layout diagram of the first heating device and the second heating device of a pigsty according to an embodiment of the present invention; <000​​​​​​​​​​​​​This is a schematic diagram of the structure of a light-transmitting canopy roof, a second heating device, a heat pump, a power generation device, and a liquid storage tank according to an embodiment of the present invention;

[0043] Figure 7 yes Figure 6 Enlarged view of point A in the middle;

[0044] Figure 8 This is a schematic diagram of the overall structure of a pig farm, including a translucent roof, a second heating device, a heat pump, a power generation device, and a liquid storage tank, according to an embodiment of the present invention.

[0045] Figure 9 This is a schematic diagram of a pigsty temperature control system according to an embodiment of the present invention.

[0046] In the picture:

[0047] 1-Transparent roof; 11-Double-layer transparent glass; 111-Heat exchange medium loop channel; 1111-Heat exchange medium loop channel unit for fattening area; 1112-Heat exchange medium loop channel unit for lactation area; 11101-Transparent heat collection tube; 11102-U-shaped glass tube; 112-Three-way valve; 17-Heat exchange medium storage tank; 1701-First liquid storage tank; 1702-Second liquid storage tank; 171-First group of liquid storage tanks; 172-Second group of liquid storage tanks; 115- Circulating pump; 116-Flow path switching valve; 12-Insulation layer; 13-Transparent film; 14-Insulation blanket; 2-Linear guide rail; 3-Fermentation tank; 4-Floor; 5-Second heating device; 51-Heat pump; 511-First heat pump; 512-Second heat pump; 6-First heating device; 7-Screw conveyor; 8-Foundation; 9-Electric heating film; 10-Underfloor heating pipe; 101-Underfloor heating pipe for fattening area; 102-Underfloor heating pipe for lactation area; 15-Energy storage device; 16-Power generation device. Detailed Implementation

[0048] In the description of this embodiment, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, the use of terms such as "first," "second," etc., can explicitly or implicitly include at least one of those features, that is, include one or more of those features.

[0049] In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0050] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," and "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] Example 1

[0052] like Figures 1-7 As shown, this embodiment provides an intelligent temperature control system for pigsties. The system includes a light-transmitting roof 1, a power generation device 16, an energy storage device 15 connected to the power generation device 16, a first heating device 6, a second heating device 5, a circulating pump 115, a heat exchange medium storage tank 17, a flow path switching valve 116, an environmental sensor, and an intelligent control unit.

[0053] A translucent roof 1 covers the top of the pigsty. The translucent roof 1 includes double-layered transparent glass 11, a translucent film 13, and a roof support frame. The translucent film 13 covers the roof support frame, and the double-layered transparent glass 11 covers the translucent film 13. The insulation layer 12 between the double-layered transparent glass 11 and the translucent film 13 can be an air layer or a gel layer. A heat exchange medium circuit channel 111 is set inside the double-layered transparent glass 11. The heat exchange medium circuit channel 111 includes multiple transparent heat collection tubes 11101, which are arranged in rows. Adjacent transparent heat collection tubes 11101 in each row are sealed and connected by U-shaped glass tubes 11102. In two adjacent rows of transparent heat collection tubes 11101, the uppermost pair or the lowermost pair of adjacent transparent heat collection tubes 11101 are connected by straight glass tubes, thereby forming the heat exchange medium circuit channel 111. Compared to traditional solar collectors, the solar collector in this embodiment eliminates the insulation layer and outer shell to facilitate light transmission. The light-transmitting film 13 is made of ethylene-tetrafluoroethylene copolymer (ETFE), which is highly resilient, explosion-proof, and has a light transmission spectrum similar to glass, ensuring that natural sunlight can enter the pigsty. This promotes sterilization in the pigsty and calcium and phosphorus metabolism in pigs, improves air quality, and helps solve the growth problems of pigs caused by the closed structure of traditional pigsties.

[0054] The heat exchange medium loop channel 111 is connected to the heat exchange medium storage tank 17, and the circulation pump 115 is installed on the heat exchange medium loop channel 111 inside the light-transmitting roof 1. The heat exchange medium storage tank 17 includes a first storage tank 1701 and a second storage tank 1702. The heat exchange medium loop channel is connected to the first storage tank 1701 and the second storage tank 1702 through a three-way valve 112. The three-way valve 112 is a pneumatic valve or a solenoid valve, capable of closing or opening any one of the channels connected to the first storage tank 1701 and the second storage tank 1702. The heat exchange medium loop channel 111 exchanges heat exchange medium with the two storage tanks through the circulation pump 115. The first storage tank 1701 stores a transparent heat exchange medium, including but not limited to an aqueous solution of ethylene glycol; the second storage tank 1702 stores a dark-colored heat exchange medium, including but not limited to a carbon nanofluid suspension, which has high heat absorption efficiency and extremely low light transmittance. The circulating pump 115 can draw heat exchange medium from the first storage tank 1701 and the second storage tank 1702 into the heat exchange medium loop channel 111 through the three-way valve 112. The circulating pump 115 can also empty the heat exchange medium in the heat exchange medium loop channel 111. These are existing technologies and will not be described in detail here. It is understood that the color concentration of the dark working medium in the second storage tank 1702 can be manually adjusted to suit different pig ages. Compared with the traditional mechanical external shading system, this embodiment achieves dynamic reconstruction of photothermal performance through internal switching of heat exchange media with different optical properties, eliminating the risk of failure of mechanical transmission components. In this embodiment, the dark heat exchange medium in the heat exchange medium loop channel 111 can block sunlight and prevent strong solar radiation, which is beneficial to solving the stress problem caused by excessive light in fattening pigs. When a transparent heat exchange medium is used in the heat exchange medium loop channel 111, the transparent heat exchange medium allows sunlight to pass through, allowing sufficient natural light to enter the pigsty, which is beneficial to the growth of pigs in the nursery period.

[0055] The hot end of the power generation device 16 is connected to the circuit channel 111 of the heat exchange medium inside the light-transmitting roof 1, thereby converting the heat energy from the light-transmitting roof 1 into electrical energy and storing the electrical energy in the energy storage device 15.

[0056] The first heating device 6 and the second heating device 5 are respectively embedded in the pigsty floor 4; the first heating device 6 and the second heating device 5 are electrically connected to the energy storage device 15, and the heat source side of the second heating device 5 is connected to the heat exchange medium circuit channel of the light-transmitting roof 1. Flow path switching valves 116 are provided on the pipes connecting the power generation device 16 and the second heating device 5 to the heat exchange medium circuit channel 111 in the light-transmitting roof 1. The first heating device 6 is an electric heating film 9, and the second heating device 5 includes a heat pump 51, which is a water source heat pump. The evaporation side of the heat pump 51 constitutes the heat source side of the second heating device 5, and exchanges heat with the heat exchange medium circuit channel in the light-transmitting roof 1; the condensation side of the heat pump 51 is connected to the underfloor heating pipe 10 buried in the pigsty floor 4, and the heat pump 51 is electrically connected to the energy storage device 15; the electric heating film 9 is laid on the underfloor heating pipe 10. Regarding how the water source heat pump used in this embodiment obtains heat energy from the translucent roof 1, this is a common technique in the field. Typically, the heat exchange medium in the translucent roof is brought into contact with the evaporator side of the water source heat pump. It can also be understood that when the water temperature in the translucent roof 1 meets the heating requirements, the heat pump 51 can be turned off, and only hot water can be pumped into the underfloor heating pipes 10 for heating. When the water temperature in the translucent roof 1 does not meet the heating requirements, the heat pump 51 starts. The water temperature that meets the heating requirements is typically set at 50°C. The heat pump 51 is connected to the energy storage device 15 to obtain electrical energy, and the heat pump 51 can also be connected to an external power source to obtain electrical energy. The electric heating film 9 is mainly used for localized precise temperature control (e.g., maintaining 32±1°C in the delivery room area), and the underfloor heating pipes 10 provide the basic heat load. When the power supply is sufficient, the electric heating film 9 is used preferentially for rapid temperature adjustment. When the underfloor heating pipes 10 are started, the electric heating film 9 acts as an auxiliary heating unit to cope with sudden low temperatures.

[0057] like Figure 3 As shown, this embodiment illustrates the power utilization cycle of a pigsty. In this embodiment, during the day, the heat exchange medium loop channel 111 collects heat and transfers it to the power generation device 16 to generate electricity. The electrical energy is then stored in the energy storage device 15, which can be used by the first heating device 6 and the second heating device 5. At this time, the translucent roof 1 is not covered by the insulation blanket 14. The energy storage device 15 supplies power to the first heating device 6 and the second heating device 5. The evaporation side of the heat pump 51 exchanges heat with the heat exchange medium loop channel 111 of the translucent roof 1, extracting low-grade heat energy from the medium. The condensation side of the heat pump 51 is connected to the underfloor heating pipe 10 embedded under the pigsty floor. Through the compression cycle of the heat pump 51, the grade of heat obtained from the heat exchange medium loop channel 111 is improved. The underfloor heating pipe 10 of the second heating device 5 heats the low-temperature water to 50°C. The intelligent control unit dynamically adjusts the power of the electric heating film 9 according to the temperature feedback of each area, prioritizing the heating of the sow farrowing area.

[0058] like Figure 4As shown, during rainy weather when power generation is not possible during the day, insulation is provided by the first heating device 6 and the second heating device 5 laid on the pigsty floor. At this time, the insulation blanket 14 is lowered, completely covering the roof. The power generation device 16 can no longer convert the heat energy from the translucent roof 1 into electrical energy. When the sensor detects that the outside temperature is ≤5℃, the second heating device 5 is activated as the main heating module, and the first heating device 6 acts as an auxiliary heating module. If the energy storage device's power is <20%, the first heating device 6 and the second heating device 5 act as the main heating modules.

[0059] The system also includes a movable insulation blanket, which includes a pair of linear guide rails 2 at the edge of the roof and an insulation blanket 14 connected thereto. The moving unit of the linear guide rails 2 is connected to the insulation blanket 14, and the insulation blanket 14 can cover the light-transmitting roof 1 under the drive of the linear guide rails 2.

[0060] The power generation device 16 adopts the ORC low-temperature waste heat power generation system. The ORC low-temperature waste heat power generation system is connected to the heat exchange medium loop channel 111 of the light-transmitting roof 1 to generate electricity. This is a common technology in the existing field and will not be described in detail here.

[0061] The intelligent control unit is electrically connected to the power generation device 16, energy storage device 15, circulating pump 115, flow path switching valve 116, three-way valve 112, first heating device 6, second heating device 5, and environmental sensor. The intelligent control unit is configured as follows:

[0062] Based on data from the environmental sensors, sunlight intensity, and preset growth stage requirements of the pigs, the operating power of the first heating device 6 and the second heating device 5 is controlled, as is the replacement of the heat exchange medium in the heat exchange medium loop channel 111 within the translucent roof 1. The flow rate of the circulating pump 115 and the switching of the flow path switching valve 116 are controlled to adjust the proportion of heat energy distributed from the translucent roof 1 to the power generation device 16 and the second heating device 6. The environmental sensors include a temperature sensor and a harmful gas concentration sensor. The temperature sensor is installed inside and outside the pigsty, while the harmful gas concentration sensor is installed inside the pigsty.

[0063] According to one embodiment of the present invention, the area between 40cm and 60cm above the ground is defined as the pig's breathing zone. The ammonia concentration sensor and hydrogen sulfide concentration sensor in the environmental sensing unit are both deployed at a height of 50cm above the ground to accurately sense the air quality near the pig's breathing zone. When the ammonia concentration is greater than 25ppm for 5 consecutive minutes or the hydrogen sulfide concentration exceeds 10ppm, the intelligent control unit will issue a three-level linkage command: First, the power of the electric heating film 9 below the detection point is reduced to 40% of the normal value, reducing the power of the second heating device and reducing the driving effect of the local heat source on the volatilization of harmful gases; second, the ventilation system is turned on; third, the local screw conveyor 7 of the dry manure cleaning module is triggered to start, sending the accumulated manure into the solid-liquid separator. The fermentation tank 3 is located below the foundation 8. In this embodiment, the dry manure enters the fermentation tank 3 and undergoes biogas production fermentation within the range of 45-55℃; the resulting biogas can be used for power generation or as an auxiliary heating heat exchange medium. Using biogas for power generation and heating are common technologies in the art and will not be described in detail here.

[0064] The intelligent temperature control method for pigsties, employing the intelligent temperature control system described above, specifically includes the following steps:

[0065] Obtain parameter information, including pigsty temperature, light intensity, and pig growth stage; based on the parameter information, calculate the energy allocation coefficient K:

[0066]

[0067] Here, α and β are weighting factors. α and β are values ​​set based on experience, and their function is to adjust the weight of the two ratios mentioned above as weighting factors. Their specific values ​​can be determined based on factors such as the climate of the pigsty's location and the model of each component of the system.

[0068] Based on the energy allocation coefficient K, implement one or more of the following controls:

[0069] A. When priority power generation is prioritized, i.e., when the energy allocation coefficient K ≥ 0.7, the flow path switching valve 116 is controlled to guide the heat exchange medium flowing out of the translucent roof 1 to the power generation device 16, and the circulating pump 115 is controlled to run at a first flow rate so that the temperature of the heat exchange medium reaches the high-efficiency power generation range; the intelligent control unit adjusts the ratio of the power generation wattage of the translucent roof 1 to the overall energy consumption of the system to be greater than or equal to a first ratio, where the first ratio is the ratio of the rated power generation wattage of the translucent roof 11 to the rated energy consumption of the overall system.

[0070] B. When heat supply and power generation need to be balanced, that is, when the energy distribution coefficient 0.3 < K < 0.7, control the flow path switching valve 116 to direct the heat exchange medium flowing out of the transparent shed roof 1 to the power generation device 16 and the second heating device 5 simultaneously or at different times, and control the circulation pump 115 to operate at a second flow rate different from the first flow rate; regulate the energy storage device 15 to supply power to the first heating device 6; control the operating powers of the first heating device 6 and the second heating device 5 to make the temperature in the pigsty reach the target temperature corresponding to each growth stage of the pigs; the intelligent control unit adjusts the ratio of the generated wattage of the transparent shed roof 1 to the overall energy consumption of the system to a second ratio; wherein, the second ratio is less than the first ratio; wherein, the second flow rate is greater than the first flow rate; the specific values of the first flow rate and the second flow rate are obtained based on experience.

[0071] C. When the solar thermal energy is insufficient, when K ≤ 0.3, control the flow path switching valve 116 to close the path flowing to the second heating device 5, control the circulation pump 115 to operate at a low speed or stop, regulate the energy storage device 15 to supply power to the first heating device 6 and the second heating device 5; control the operating powers of the first heating device 6 and the second heating device 5 to make the temperature in the pigsty reach the target temperature corresponding to each growth stage of the pigs;

[0072] D. Control the heat preservation quilt 14 to completely cover the transparent shed roof 1 or retract the heat preservation quilt 14;

[0073] E. Adjust the heat exchange medium in the heat exchange medium circuit channel 111 according to the solar illumination intensity and the growth stage of the pigs.

[0074] When the harmful gas concentration sensor detects that the harmful gas concentration exceeds the standard, reduce the powers of the first heating device 6 and the second heating device 5, and at the same time start the spiral conveyor 7 in the dry manure cleaning device to send the accumulated manure into the solid-liquid separator, and turn on the ventilation system for ventilation.

[0075] In spring and autumn, the temperature difference between day and night is relatively large. To avoid too rapid temperature drop at night, the system automatically lowers the heat preservation quilt 14 to a preset position before sunset, thereby blocking the external cold radiation.

[0076] Embodiment 2

[0077] A pigsty temperature control system, the difference between this system and that of Embodiment 1 is that the pigsty uses solid walls to divide the entire pigsty into a fattening area and a nursing area, and the nursing area also has the function of a nursery area. As Figure 8As shown, in this embodiment, a heating pipe 101 for the fattening area is installed under the floor of the fattening area, and a heating pipe 102 for the lactation area is installed under the floor of the lactation area. A heat exchange medium loop channel unit 1111 for the fattening area is installed on the translucent canopy above the fattening area, and a heat exchange medium loop channel unit 1112 for the lactation area is installed on the translucent canopy above the lactation area. Please refer to [reference needed] in this embodiment. Figure 8 The heat exchange medium loop channel unit 1111 in the fattening area and the underfloor heating pipe 101 in the fattening area form one loop, while the heat exchange medium loop channel unit 1112 in the lactation area and the underfloor heating pipe 102 in the lactation area form another loop. The two loops are independent of each other. In the fattening area, the heat exchange medium loop channel unit 1111 is connected to the first set of storage tanks 171, and is connected to the first heat pump 511 via a pipe. The first heat pump 511 is connected to the underfloor heating pipe 101 in the fattening area. In the lactation area, the heat exchange medium loop channel unit 1112 is connected to the second set of storage tanks 172, and is connected to the second heat pump 512 via a pipe. The second heat pump 512 is connected to the underfloor heating pipe 102 in the lactation area. It is understood that each loop can be connected to a separate power generation device, or they can be connected together to a single power generation device.

[0078] In this embodiment, the natural lighting conditions in the pigsty are fully optimized. When a transparent heat exchange medium is introduced into the heat exchange medium loop channel unit 1112 in the lactation area, the transparent heat exchange medium facilitates sunlight penetration, allowing sufficient natural light to enter the pigsty. Pigs in the lactation area can fully enjoy sunlight, which accelerates calcium absorption and bone development, promotes vitamin D synthesis, enhances the immune system, and reduces rickets, skin diseases, and respiratory diseases caused by insufficient light. In the heat exchange medium loop channel unit 1111 in the fattening area, a dark-colored heat exchange medium is used to block sunlight and reduce light intensity, improving the pigs' feeding behavior and circadian rhythms, reducing stress responses in the fattening area, and promoting feed conversion efficiency. With long-term use, pigs exhibit more balanced growth, stronger physiques, and a significant decrease in disease incidence, thereby improving overall breeding output and economic benefits, demonstrating the practical application value and ecological advantages of this invention in the field of animal husbandry.

[0079] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1. A smart temperature control system for pigsties, characterized in that, include: Translucent roof, power generation device, energy storage device connected to the power generation device, first heating device, second heating device, circulating pump, heat exchange medium storage tank, flow path switching valve, environmental sensor and intelligent control unit. A translucent roof covers the top of the pigsty. The translucent roof contains a loop channel for the circulation of heat exchange medium, which is connected to a heat exchange medium storage tank. The hot end of a power generation device is connected to the loop channel of the heat exchange medium within the translucent roof. A first heating device and a second heating device are embedded in the pigsty floor. The first and second heating devices are electrically connected to an energy storage device, and the heat source side of the second heating device is connected to the heat exchange medium loop channel of the translucent roof. A circulating pump is installed on the heat exchange medium loop channel within the translucent roof. Flow path switching valves are installed on the pipes connecting the heat exchange medium storage tank, the power generation device, and the second heating device to the heat exchange medium loop channel within the translucent roof. The intelligent control unit is electrically connected to the power generation device, energy storage device, circulating pump, flow path switching valve, first heating device, second heating device, and environmental sensor. The intelligent control unit is configured as follows: Based on the data from the environmental sensors, sunlight intensity, and the preset growth stage requirements of the pigs, the operating power of the first heating device and the second heating device are controlled, and the replacement of the heat exchange medium is controlled. By controlling the flow rate of the circulating pump and the switching of the flow path switching valve, the proportion of heat energy distributed from the light-transmitting canopy to the power generation device and the second heating device is adjusted.

2. The intelligent temperature control system for pigsties according to claim 1, characterized in that, The light-transparent roof includes double-layered glass, a light-transparent film, and a roof support frame; the light-transparent film covers the roof support frame, and the double-layered glass covers the light-transparent film; the heat exchange medium circuit channel is set inside the double-layered glass. The heat exchange medium storage tank includes a first liquid storage tank and a second liquid storage tank, which respectively store heat exchange media with different optical properties; The first heating device is an electric heating film, and the second heating device includes a heat pump. The evaporation side of the heat pump constitutes the heat source side of the second heating device and exchanges heat with the heat exchange medium circuit channel in the light-transmitting roof. The condensation side of the heat pump is connected to the underfloor heating pipe buried in the pigsty floor, and the heat pump is electrically connected to the energy storage device. The electric heating film is laid on top of the underfloor heating pipes.

3. The intelligent temperature control system for pigsties according to claim 2, characterized in that, Install partitions to divide the pigsty into multiple areas; The light-transparent canopy is equipped with a corresponding number of heat exchange medium loop channel units according to the area, and each heat exchange medium loop channel unit is independent of the others. Each area is equipped with an independent first heating device and a second heating device. The second heating device is connected to the heat exchange medium loop channel unit of the corresponding area to form a closed loop path.

4. The intelligent temperature control system for pigsties according to any one of claims 1-3, characterized in that, The heat exchange medium circuit channel includes multiple transparent heat collection tubes, which are arranged in rows and columns, and adjacent transparent heat collection tubes in each row are sealed and connected by a U-shaped glass tube.

5. The intelligent temperature control system for pigsties according to claim 1, characterized in that, It also includes a movable insulation blanket that covers the translucent canopy roof and is configured to partially or completely cover the translucent canopy roof when in operation.

6. The intelligent temperature control system for pigsties according to claim 1, characterized in that, The environmental sensors include temperature sensors and harmful gas concentration sensors.

7. A method for intelligent temperature control in pigsties, employing the intelligent temperature control system described in any one of claims 1-6, characterized in that, Includes the following steps: Obtain parameter information, including the temperature of the pigsty, the light intensity, and the growth stage of the pigs; based on the parameter information, calculate the energy distribution coefficient K; According to the energy distribution coefficient K, perform one or more of the following controls: A. When prioritizing power generation, control the flow path switching valve to direct the heat exchange medium flowing out of the light-transmitting shed roof to the power generation device, and control the circulation pump to operate at a first flow rate so that the temperature of the heat exchange medium reaches the high-efficiency power generation range; B. When it is necessary to balance heat supply and power generation, control the flow path switching valve to direct the heat exchange medium flowing out of the light-transmitting shed roof to the power generation device and the second heating device simultaneously or at different times, and control the circulation pump to operate at a second flow rate different from the first flow rate; regulate the energy storage device to supply power to the first heating device; control the operating powers of the first heating device and the second heating device so that the temperature of the pigsty reaches the target temperature corresponding to each growth stage of the pigs; C. When the light thermal energy is insufficient, control the flow path switching valve to close the path flowing to the second heating device, control the circulation pump to operate at a low speed or stop, regulate the energy storage device to supply power to the first heating device and the second heating device; control the operating powers of the first heating device and the second heating device so that the temperature of the pigsty reaches the target temperature corresponding to each growth stage of the pigs; D. Control the thermal insulation quilt to completely cover the light-transmitting shed roof or retract the thermal insulation quilt; E. Adjust the heat exchange medium in the heat exchange medium circuit channel according to the solar light intensity and the growth stage of the pigs.

8. The intelligent temperature control method for pigsties according to claim 7, characterized in that, When the energy distribution coefficient K≥0.7, it is the priority power generation stage; when the energy distribution coefficient 0.3<K<0.7, it is the stage of needing to balance heat supply and power generation, and when K≤0.3, it is the stage of insufficient light.

9. The intelligent temperature control method for pigsties according to claim 7 or 8, characterized in that, The energy distribution coefficient K is shown by the following formula: Where α and β are weighting factors.

10. The intelligent temperature control method for pigsties according to claim 7, characterized in that, It also includes the following steps: When the harmful gas concentration sensor detects that the harmful gas concentration exceeds the standard, reduce the powers of the first heating device and the second heating device, and at the same time start the dry manure cleaning device and the ventilation system.

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