Livestock and poultry manure aerobic composting moisture control method and device and electronic equipment

Abstract

The invention provides a livestock and poultry manure aerobic composting moisture control method and device and electronic equipment, and belongs to the technical field of agricultural waste resource utilization, and the livestock and poultry manure aerobic composting moisture control method comprises the following steps: horizontally dividing a composting material into a plurality of composting material layers; executing a preset step by taking each compost material layer in the plurality of compost material layers as a target compost material layer to obtain a target moisture reserve corresponding to the target compost material layer; determining the moisture reserve at the current moment according to the target moisture reserve corresponding to each compost material layer in the plurality of compost material layers; when it is determined that water needs to be supplemented to the compost material according to the current moisture reserves and the initial moisture reserves, the current water supplementing amount is determined according to the current moisture reserves. According to the livestock and poultry manure aerobic composting moisture control method provided by the invention, the technical problem that the composting effect is affected due to the fact that the livestock and poultry manure aerobic composting moisture control method in the related technology cannot meet the actual composting water replenishing requirement is solved.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural waste resource utilization, and in particular to a method, a device and an electronic device for controlling moisture in aerobic composting of livestock and poultry manure. Background Art

[0002] Agricultural waste mainly includes livestock and poultry manure and plant fiber waste. In particular, organic waste such as livestock and poultry manure contains not only rich nutrients, but also pathogenic microorganisms such as pathogenic bacteria and parasite eggs. If improperly handled, it is very easy to cause harm to humans, livestock and crops. Aerobic fermentation, also known as composting, is the most important way to utilize agricultural waste resources.

[0003] Moisture conditions are important environmental factors that affect the aerobic composting process and the quality of compost products. Excessive moisture content can easily lead to an anaerobic state in the fermentation process and produce odor; too low moisture content will hinder the reproduction of microorganisms, delay the fermentation process or even stop it. During the entire aerobic composting process of agricultural waste, water evaporation occurs all the time, especially measures such as turning the pile and ventilation aggravate the loss of water, causing the moisture content of the compost material to continue to drop rapidly. At this time, it is necessary to add an appropriate amount of water to maintain the activity of microorganisms in the material and maintain the normal progress of the fermentation process.

[0004] In the related technologies, management mainly relies on manual experience, and lacks accurate decision-making on the time and amount of water replenishment, resulting in inappropriate water replenishment time and mismatch between the amount of water replenishment and the actual needs of composting, which affects the aerobic composting process and composting effect.

[0005] It can be seen that the moisture control method of aerobic composting of livestock and poultry manure in the related art has the technical problem of being unable to meet the actual water replenishment demand of composting, thus affecting the composting effect. Summary of the invention

[0006] The present invention provides a method, device and electronic equipment for controlling moisture in aerobic composting of livestock and poultry manure, which are used to solve the technical problem that the moisture control method for aerobic composting of livestock and poultry manure in the related art cannot meet the actual water replenishment demand of composting, thus affecting the composting effect.

[0007] The present invention provides a method for controlling moisture in aerobic composting of livestock and poultry manure, comprising the following steps: dividing a compost material into a plurality of compost material layers horizontally; taking each of the plurality of compost material layers as a target compost material layer to execute a preset step to obtain a target moisture reserve corresponding to the target compost material layer; determining a moisture reserve at a current moment according to the target moisture reserve corresponding to each of the plurality of compost material layers, wherein the moisture reserve at a current moment is a total moisture reserve of the compost material at the current moment; when it is determined that water needs to be added to the compost material according to the moisture reserve at the current moment and the initial moisture reserve, determining a current water reserve according to the moisture reserve at the current moment. The preset steps include: determining the target volume of the target compost material layer according to the layer depth and bottom area of ​​the target compost material layer; determining the target bulk density at the current moment according to the initial target bulk density of the target compost material layer at the initial moment and a target relationship function, wherein the target relationship function is used to reflect the relationship between the bulk density and time of the target compost material layer; obtaining the target moisture reserve according to the target volume, the target bulk density at the current moment and the target moisture content at the current moment, wherein the target moisture content at the current moment is the moisture content of the target compost material layer at the current moment.

[0008] According to a method for controlling moisture in aerobic composting of livestock and poultry manure provided by the present invention, the target relationship function is determined by the following steps: obtaining historical bulk density data of the target compost material layer, wherein the historical bulk density data includes the bulk density of the target compost material layer at multiple historical moments in the historical composting process; constructing an initial target relationship function based on the historical bulk density data, wherein the initial target relationship function is a polynomial model; calculating the partial derivative of each parameter of the initial target relationship function based on a mean square error loss function to obtain multiple partial derivatives; setting the multiple partial derivatives to 0 to obtain a set of equations, wherein each equation in the set of equations corresponds to a parameter of the initial target relationship function; solving the set of equations using the Levenberg-Marquardt method to obtain the optimal estimate of each parameter in the initial target relationship function; updating each parameter in the initial target relationship function to the corresponding optimal estimate to obtain the target relationship function.

[0009] According to a method for controlling moisture in aerobic composting of livestock and poultry manure provided by the present invention, when it is determined that the compost material needs to be replenished with water according to the moisture reserve at the current moment and the initial moisture reserve, before determining the current water replenishment amount according to the moisture reserve at the current moment, the method further includes: subtracting the moisture reserve at the current moment from the initial moisture reserve to obtain a current moisture loss; dividing the current moisture loss by the initial moisture reserve to obtain a current ratio; comparing the current ratio with a water replenishment start value; and when the current ratio is greater than or equal to the water replenishment start value, determining that the compost material needs to be replenished with water.

[0010] According to a method for controlling moisture in aerobic composting of livestock and poultry manure provided by the present invention, the initial moisture reserve is determined by the following steps: multiplying the bottom area of ​​the compost material by the density of water to obtain a first product; multiplying the weight of the compost material at the initial moment by the moisture content of the compost material at the initial moment to obtain a second product, wherein the moisture content of the compost material at the initial moment is determined by a sampling method; and dividing the second product by the first product to obtain the initial moisture reserve.

[0011] According to a method for controlling moisture in aerobic composting of livestock and poultry manure provided by the present invention, determining a current water replenishment amount according to the moisture reserve at the current moment comprises: determining a current composting stage of the compost material at the current moment according to a temperature change of the compost material; determining a current control coefficient according to the current composting stage; multiplying the current control coefficient by the bulk density and volume of the compost material at the current moment to obtain a current moisture control threshold; and subtracting the moisture reserve at the current moment from the current moisture control threshold to obtain the current water replenishment amount.

[0012] According to a method for controlling moisture in aerobic composting of livestock and poultry manure provided by the present invention, the method of determining the current composting stage of the composting material at the current moment according to the temperature change of the composting material comprises: when the temperature change of the composting material from the initial moment to the current moment is a heating process, and the temperature of the composting material at the current moment is greater than or equal to 40°C, judging that the composting material is in the high temperature stage at the current moment; when the temperature change of the composting material from the initial moment to the current moment is a heating followed by cooling process, and the temperature of the composting material at the current moment is less than 40°C and is not within a preset temperature range, judging that the composting material is in the cooling stage at the current moment, wherein the current moment the ambient temperature at that moment is the median value of the preset temperature range; when the temperature change of the compost material from the initial moment to the current moment is a process of heating up and then cooling down, and the temperature of the compost material at the current moment is within the preset temperature range, it is judged that the compost material is in the completion stage at the current moment; the current control coefficient is determined according to the current composting stage, including: when the current composting stage is the high temperature stage, the current control coefficient is the first coefficient; when the current composting stage is the cooling stage, the current control coefficient is the second coefficient, wherein the first coefficient is greater than the second coefficient; when the current composting stage is the completion stage, the current control coefficient is 0.

[0013] The present invention also provides a moisture control device for aerobic composting of livestock and poultry manure, comprising the following modules: a first execution module, used to divide the compost material level into a plurality of compost material layers; a second execution module, used to execute preset steps with each of the plurality of compost material layers as a target compost material layer to obtain a target moisture reserve corresponding to the target compost material layer; a first determination module, used to determine the moisture reserve at a current moment according to the target moisture reserve corresponding to each of the plurality of compost material layers, wherein the moisture reserve at a current moment is the total moisture reserve of the compost material at the current moment; and a second determination module, used to, when determining that water needs to be added to the compost material according to the moisture reserve at the current moment and the initial moisture reserve, The current water replenishment amount is determined according to the water reserve at the current moment, wherein the initial water reserve is the total water reserve of the compost material at the initial moment of starting composting; the preset step includes: determining the target volume of the target compost material layer according to the layer depth and bottom area of ​​the target compost material layer; determining the target bulk density at the current moment according to the initial target bulk density of the target compost material layer at the initial moment and a target relationship function, wherein the target relationship function is used to reflect the relationship between the bulk density and time of the target compost material layer; obtaining the target water reserve according to the target volume, the target bulk density at the current moment and the target water content at the current moment, wherein the target water content at the current moment is the water content of the target compost material layer at the current moment.

[0014] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the moisture control method for aerobic composting of livestock and poultry manure as described above is implemented.

[0015] The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the moisture control method for aerobic composting of livestock and poultry manure as described in any one of the above is implemented.

[0016] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the method for controlling moisture in aerobic composting of livestock and poultry manure as described above is implemented.

[0017] The livestock and poultry manure aerobic composting moisture control method, device and electronic equipment provided by the present invention divide the compost material horizontally into multiple compost material layers, determine the target moisture reserve corresponding to the target compost material layer, and then obtain the moisture reserve of the compost material at the initial moment, and judge the water replenishment time and water replenishment amount according to the moisture reserve at the current moment; because the compost material is horizontally divided into multiple compost material layers, the moisture content of each compost material layer is calculated based on the target relationship function, and the moisture content of the target compost material layer at the current moment can be accurately determined, and then it can be judged whether it is necessary to replenish water to the compost material, and the current water replenishment amount can be accurately determined, thereby solving the technical problem that the livestock and poultry manure aerobic composting moisture control method in the related art cannot meet the actual water replenishment demand of the composting, thereby affecting the composting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced one by one below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is one of the flow diagrams of the method for controlling moisture in aerobic composting of livestock and poultry manure provided by the present invention.

[0020] Figure 2 The present invention is a schematic structural diagram of a moisture control system for aerobic composting of livestock and poultry manure.

[0021] Figure 3 This is the second flow diagram of the moisture control method for aerobic composting of livestock and poultry manure provided by the present invention.

[0022] Figure 4 It is a structural schematic diagram of the moisture control device for aerobic composting of livestock and poultry manure provided by the present invention.

[0023] Figure 5 It is a structural schematic diagram of the electronic device provided by the present invention.

[0024] Figure numerals: 1-mixing system; 2-composting system; 3-water supply system; 4-management and control system. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that in the description of the present invention, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "include one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. The orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The terms "first", "second", etc. in the present invention are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present invention can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" means at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0028] Agricultural waste mainly includes livestock and poultry manure and plant fiber waste. In particular, organic waste such as livestock and poultry manure contains not only rich nutrients, but also pathogenic microorganisms such as pathogenic bacteria and parasite eggs. Once improperly handled, it is very easy to cause harm to humans, animals and crops after use. Aerobic fermentation, also known as composting, is the most important way to utilize agricultural waste resources. Moisture conditions are an important environmental factor affecting the aerobic composting process and the quality of compost products. Excessive moisture content can easily lead to an anaerobic state in the fermentation process and produce odor; too low moisture content will hinder the reproduction of microorganisms, delay the fermentation process or even stop it. During the entire aerobic composting process of agricultural waste, water evaporation occurs all the time, especially measures such as turning the pile and ventilation aggravate the loss of water, resulting in a continuous and rapid decrease in the moisture content of the compost material. At this time, it is necessary to add an appropriate amount of water to maintain the activity of microorganisms in the material and maintain the normal advancement of the fermentation process; at the same time, by adding an appropriate amount of water to the compost material, the porosity can also be reduced, the diffusion rate of NH3 (ammonia) in the pile can be reduced, NH3 emissions can be reduced, and nitrogen losses can be reduced. At present, the moisture control method in the aerobic composting process mainly relies on manual experience management in the related technology, lacking accurate decision-making on the time and amount of water replenishment, resulting in inappropriate water replenishment time, and the amount of water replenishment does not match the actual needs of composting, affecting the aerobic composting process and composting effect. It can be seen that the moisture control method of aerobic composting of livestock and poultry manure in the related technology has a technical problem that it cannot meet the actual water replenishment needs of composting, thus affecting the composting effect.

[0029] In order to at least solve some of the above problems, the following Figure 1-Figure 5 The invention describes a method, a device and an electronic device for controlling moisture in aerobic composting of livestock and poultry manure.

[0030] The livestock and poultry manure aerobic composting moisture control method provided in this embodiment can be applied to the scenario of replenishing water to the compost material during the aerobic composting of livestock and poultry manure.

[0031] Figure 1 FIG. 1 is one of the flow diagrams of the method for controlling moisture in aerobic composting of livestock and poultry manure provided by the present invention, such as Figure 1 As shown, including but not limited to the following steps: Step 101 : dividing the compost material horizontally into a plurality of compost material layers.

[0032] Figure 2 Schematic diagram of the structure of the livestock and poultry manure aerobic composting moisture control system provided by the present invention. Figure 2 As shown, the livestock and poultry manure aerobic composting moisture control system in this embodiment includes a mixing system 1, a composting system 2, a water replenishment system 3 and a management control system 4.

[0033] The livestock and poultry manure aerobic fermentation water replenishment method in this embodiment can be executed by a livestock and poultry manure aerobic composting moisture control system, specifically, it can be executed by a management control system in the livestock and poultry manure aerobic composting moisture control system.

[0034] Specifically, the mixing system is used for the preparation and mixing of composting materials, mainly mixing livestock and poultry manure with auxiliary materials such as expanders and microbial agents into uniform composting materials, and adjusting the initial moisture conditions of the composting materials to a controlled level through sampling testing, water replenishment and other steps.

[0035] The composting system is a closed reactor with automatic control functions such as feeding and discharging, stirring / turning, heat preservation, ventilation, and aeration. The reactor can be vertical or horizontal. By controlling the stirring frequency, aeration volume and other functions, sufficient oxygen supply and suitable moisture conditions of the composting materials can be met during the composting process, so as to achieve rapid decomposition of the composting materials.

[0036] The water replenishment system has an automatic water supply function, which is used to add water to the initial composting materials in the mixing system to control the initial moisture conditions of the composting materials at an appropriate level; the water replenishment system can also replenish and moisturize the composting materials during the composting process based on the moisture decision information of the composting materials.

[0037] The management and control system is electrically connected to the mixing system, composting system and water replenishment system, and is used for storing and calculating the initial parameters of the composting materials, calculating and deciding the amount of moisture change during the composting process, and regulating and managing the moisture of the composting materials. In particular, when the moisture reserves of the composting materials exceed the control threshold, the management and control system can accelerate the rapid evaporation of the moisture of the composting materials by controlling the stirring frequency, aeration volume and other functions, so as to control the moisture reserves of the composting materials at the target level.

[0038] In this embodiment, the compost material is horizontally divided into a plurality of compost material layers, and the plurality of compost material layers are horizontally divided; it should be noted that the layer depth of each of the plurality of compost material layers is the same.

[0039] Step 102, taking each of the multiple compost material layers as a target compost material layer and executing a preset step to obtain a target moisture reserve corresponding to the target compost material layer; Preset steps include: Step 1021, determining a target volume of the target composting material layer according to the layer depth and bottom area of ​​the target composting material layer; Step 1022, determining the target bulk density at the current moment according to the initial target bulk density of the target composting material layer at the initial moment and the target relationship function, wherein the target relationship function is used to reflect the relationship between the bulk density of the target composting material layer and time; Step 1023, obtaining the target water reserve according to the target volume, the current target bulk density and the current target water content, wherein the current target water content is the water content of the target compost material layer at the current moment.

[0040] Step 103, determining the moisture reserve at a current moment according to the target moisture reserve corresponding to each compost material layer in the plurality of compost material layers, wherein the moisture reserve at a current moment is the total moisture reserve of the compost material at a current moment.

[0041] Specifically, the water storage at the current moment can be determined by formula (1): (1) in, for i Moisture content of composting materials at the moment (mm), when i When the time is the current time, is the water reserve at the current moment; A is the composting material laying area (m 2 ), that is, the bottom area of ​​the target composting material layer, h is the depth of the target compost material layer (cm); ρ ij for i time j Layer density (g / cm 3 )(j=1,2,3,…, n , indicating different compost material layers); for i time j Layer moisture content (g / g).

[0042] Specifically, the bulk density of compost materials at different times can be calculated by To determine, is the bulk density of the compost material at the initial moment, is the bulk density of the compost material at time i, For each target composting material layer, the target bulk density at the current moment is determined according to the initial target bulk density and the target relationship function. Similarly, each target composting material layer has a corresponding target relationship function to reflect the relationship between the bulk density of the target composting material layer at the current moment and the bulk density at the initial moment.

[0043] It should be noted that the target moisture content of each target compost material layer at the current moment can be obtained by sampling. Specifically, the target moisture content can be determined by sampling with a ring knife method. Preferably, the moisture content of three sample points of the target compost material layer can be collected and the average value can be taken to obtain the target moisture content; the bulk density of the target compost material layer at the current moment, i.e., the target bulk density at the current moment ρij It is determined based on the initial target bulk density and the target relationship function, and the target relationship function can be determined in advance through sample data.

[0044] Since in this embodiment, the initial moisture reserve is adjusted to a fixed value at the initial moment, and the fermentation environment is in a closed composting container, it can be considered that the environment of each fermentation is basically the same, and the target relationship function can be determined by sample data, and each target relationship function corresponds to a target relationship function.

[0045] Step 104, when it is determined that water needs to be added to the compost material according to the current water reserve and the initial water reserve, the current water addition amount is determined according to the current water reserve, wherein the initial water reserve is the total water reserve of the compost material at the initial moment of composting.

[0046] In this embodiment, whether it is necessary to add water to the compost material can be determined based on the current water reserve and the initial water reserve; specifically, when the value obtained by subtracting the initial water reserve from the current water reserve reaches a preset threshold, it can be determined that it is necessary to add water to the compost material.

[0047] When it is determined that water needs to be added to the compost material, the current water addition amount is determined according to the current water reserve; that is, the difference between the current water reserve and the initial water reserve can be calculated, and water is added to the compost material.

[0048] Through the embodiments provided by the present application, the compost material is horizontally divided into a plurality of compost material layers; each of the plurality of compost material layers is used as a target compost material layer to execute preset steps to obtain a target moisture reserve corresponding to the target compost material layer; the moisture reserve at the current moment is determined according to the target moisture reserve corresponding to each of the plurality of compost material layers, wherein the moisture reserve at the current moment is the total moisture reserve of the compost material at the current moment; when it is determined that the compost material needs to be replenished with water according to the moisture reserve at the current moment and the initial moisture reserve, the current replenishment amount is determined according to the moisture reserve at the current moment, wherein the initial moisture reserve is the total moisture reserve of the compost material at the initial moment of starting composting; the preset moisture reserve is the target moisture reserve corresponding to the target compost material layer; the target moisture reserve corresponding to the target compost material layer is determined according to the target moisture reserve corresponding to each of the plurality of compost material layers; the target moisture reserve corresponding to the target compost material layer is determined according to the target moisture reserve corresponding to the target compost material layer ... The steps include: determining a target volume of a target composting material layer according to a layer depth and a bottom area of ​​the target composting material layer; determining a target bulk density at a current moment according to an initial target bulk density of the target composting material layer at an initial moment and a target relationship function, wherein the target relationship function is used to reflect the relationship between the bulk density and time of the target composting material layer; obtaining a target moisture reserve according to the target volume, the target bulk density at a current moment and the target moisture content at a current moment, wherein the target moisture content at a current moment is the moisture content of the target composting material layer at a current moment; thereby solving the technical problem that a moisture control method for aerobic composting of livestock and poultry manure in the related art cannot meet the actual water replenishment demand of composting, thereby affecting the composting effect, and improving the composting effect.

[0049] As an optional solution, the target relationship function is determined by the following steps: S11, obtaining historical bulk density data of a target composting material layer, wherein the historical bulk density data includes bulk density of the target composting material layer at multiple historical moments in a historical composting process; S12, constructing an initial target relationship function based on historical bulk density data, wherein the initial target relationship function is a polynomial model; S13, calculating the partial derivative of each parameter of the initial target relationship function based on the mean square error loss function to obtain multiple partial derivatives; S14, setting multiple partial derivatives to 0 to obtain a set of equations, wherein each equation in the set of equations corresponds to a parameter of the initial target relationship function; S15, using the Levenberg-Marquardt method to solve a set of equations to obtain the best estimate of each parameter in the initial objective relationship function; S16, each parameter in the initial target relationship function is updated to the corresponding optimal estimated value to obtain the target relationship function.

[0050] In this embodiment, historical bulk density data of the target composting material layer is obtained, wherein the historical bulk density data includes the bulk density of the target composting material layer at multiple historical moments in the historical composting process; this step involves collecting data, which comes from records of past composting experiments or production processes, and the historical bulk density data refers to the bulk density of the target composting material layer measured at different moments in the composting process.

[0051] Furthermore, an initial target relationship function is constructed based on historical bulk density data, wherein the initial target relationship function is a polynomial model; the target relationship function is constructed using historical bulk density data, namely a polynomial model, which is used to capture the relationship between the bulk density of the compost material layer and time.

[0052] Furthermore, the partial derivative of each parameter of the initial target relationship function is calculated based on the mean square error loss function to obtain multiple partial derivatives. Here, the mean square error (MSE) loss function is used to measure the difference between the model prediction value and the actual value. By calculating the partial derivatives of the loss function with respect to the model parameters, it can help optimize the model parameters in subsequent steps.

[0053] Furthermore, multiple partial derivatives are set to 0 to obtain a set of equations, where each equation in a set of equations corresponds to a parameter of the initial target relationship function; by setting the partial derivatives to 0, the minimum point of the loss function can be found, and then the optimal parameter value of the model can be obtained. After the partial derivative of each parameter is set to 0, an equation is obtained, and the equations of all parameters are combined to obtain a set of equations.

[0054] Furthermore, the Levenberg-Marquardt method is used to solve a set of equations to obtain the best estimate of each parameter in the initial target relationship function; the Levenberg-Marquardt algorithm is a numerical method for nonlinear least squares problems. Based on the Levenberg-Marquardt method, a set of equations is solved to find the parameter values ​​that minimize the loss function, that is, to obtain the best estimate of each parameter in the initial target relationship function.

[0055] Furthermore, each parameter in the initial target relationship function is updated to a corresponding optimal estimated value to obtain the target relationship function.

[0056] Through this embodiment, the target relationship function can be accurately determined, thereby improving the reliability and stability of the livestock and poultry manure aerobic composting moisture control method of this embodiment.

[0057] As an optional solution, when it is determined that water needs to be added to the compost material according to the current water reserve and the initial water reserve, before determining the current water addition amount according to the current water reserve, the method further includes: S21, subtracting the current water reserve from the initial water reserve to obtain the current water loss; S22, dividing the current water loss by the initial water reserve to obtain a current ratio; S23, comparing the current ratio with the water replenishment start value; S24: When the current ratio is greater than or equal to the water replenishment start value, it is determined that water needs to be replenished to the composting material.

[0058] Specifically, you can Determine the current water loss, where for i Moisture loss of composting materials at each moment (mm); is the initial water storage (mm); for i The moisture reserve of the composting material at this moment (mm), that is, the moisture reserve at the current moment.

[0059] Furthermore, we can judge Whether it is established is used to judge whether water replenishment is needed, where M is the water replenishment start value, preferably, M takes a value of 20%; when When the composting material is wet, water should be added, otherwise no water is needed.

[0060] Through this embodiment, it is possible to accurately determine whether water needs to be added to the composting material at the current moment, thereby improving the reliability and stability of the livestock and poultry manure aerobic composting moisture control method of this embodiment.

[0061] As an alternative, the initial water reserve is determined by the following steps: S31, multiplying the bottom area of ​​the compost material by the density of water to obtain a first product; S32, multiplying the weight of the compost material at the initial moment by the moisture content of the compost material at the initial moment to obtain a second product, wherein the moisture content of the compost material at the initial moment is determined by a sampling method; S33, dividing the second product by the first product to obtain an initial water reserve.

[0062] Specifically, the initial water storage can be determined by formula (2): (2) in, is the initial moisture reserve (mm); M0 is the weight of the compost material (kg); ρ w is the density of water (g / cm 3 ); A is the composting material laying area (m 2 ); It is the initial moisture content of the composting material, which can be determined by sampling.

[0063] Through this embodiment, the initial moisture reserve can be accurately determined, thereby improving the reliability and stability of the moisture control method for aerobic composting of livestock and poultry manure in this embodiment.

[0064] As an optional solution, the current water replenishment amount is determined according to the current water reserve, including: S41, determining the current composting stage of the composting material at the current moment according to the temperature change of the composting material; S42, determining a current control coefficient according to the current composting stage; S43, multiplying the current control coefficient by the bulk density and volume of the compost material at the current moment to obtain the current moisture control threshold; S44, subtracting the current water reserve from the current water control threshold to obtain the current water replenishment amount.

[0065] In this embodiment, the current composting stage of the composting material at the current moment is determined according to the temperature change of the composting material; during the composting process, the change of the material temperature can indicate the stage of the composting; for example, the temperature rise indicates that the composting material is in the heating stage, and the temperature stability indicates that the composting material has entered the mature stage. By monitoring the temperature change, the specific stage of the composting material (such as heating, high temperature disinfection, cooling or mature stage) can be determined.

[0066] Furthermore, the current control coefficient is determined according to the current composting stage; different composting stages require different water management strategies. The control coefficient is used to adjust the water supply, which varies according to the different composting stages.

[0067] Furthermore, the current control coefficient is multiplied by the bulk density and volume of the compost material at the current moment to obtain the current moisture control threshold; the current moisture control threshold refers to the total amount of moisture required to maintain the composting process at the current moment. By multiplying the control coefficient by the bulk density (weight per unit volume) and volume (space volume occupied by the compost material) of the compost material, the total amount of moisture that should be maintained at the current stage can be obtained.

[0068] Furthermore, the current water replenishment amount is obtained by subtracting the current water reserve from the current water control threshold. The current water replenishment amount can be obtained by subtracting the current water reserve from the water control threshold.

[0069] Through this embodiment, the current water replenishment amount can be accurately determined, thereby improving the reliability and stability of the livestock and poultry manure aerobic composting moisture control method of this embodiment.

[0070] As an optional solution, determining the current composting stage of the composting material at the current moment according to the temperature change of the composting material includes: S51, when the temperature change of the compost material from the initial moment to the current moment is a temperature rising process, and the temperature of the compost material at the current moment is greater than or equal to 40° C., it is determined that the compost material is in a high temperature stage at the current moment; S52, when the temperature change of the compost material from the initial moment to the current moment is a process of heating up and then cooling down, and when the temperature of the compost material at the current moment is less than 40° C. and is not within the preset temperature range, it is determined that the compost material is in a cooling stage at the current moment, wherein the ambient temperature at the current moment is the median value of the preset temperature range; S53, when the temperature change of the compost material from the initial moment to the current moment is a process of heating up and then cooling down, and the temperature of the compost material at the current moment is within a preset temperature range, it is determined that the compost material is in the completion stage at the current moment; Determine the current control factor based on the current composting stage, including: S61, when the current composting stage is a high temperature stage, the current control coefficient is a first coefficient; S62, when the current composting stage is a cooling stage, the current control coefficient is a second coefficient, wherein the first coefficient is greater than the second coefficient; S63: When the current composting stage is the completion stage, the current control coefficient is 0.

[0071] In this embodiment, the composting process of the compost material includes the following stages.

[0072] Initial stage (warming stage): The temperature is close to the ambient temperature and gradually rises to 30-40°C. During this stage, it is necessary to maintain appropriate humidity, usually 50%-60%. If the compost material is too dry, you can add water appropriately.

[0073] High temperature stage (high temperature disinfection stage): The temperature is above 50°C and can reach 60-70°C. Water evaporates quickly during the high temperature stage, so the humidity needs to be checked regularly. If the compost is too dry, add water to keep the humidity at 55%-65%.

[0074] Cooling stage (maturation stage): The temperature gradually drops to below 40°C. As the temperature drops, microbial activity slows down and water evaporation decreases. At this time, water replenishment should be reduced to maintain humidity at 40%-50%.

[0075] Completion stage (maturity stage): The temperature is close to the ambient temperature. The compost is almost complete and does not require additional water. Keep it dry naturally.

[0076] Therefore, the current control coefficient is determined according to the current composting stage, and the control coefficient can be adjusted accordingly when the current composting stage is in different composting stages.

[0077] Through this embodiment, the current composting stage and the corresponding current control coefficient can be accurately determined, thereby improving the reliability and stability of the livestock and poultry manure aerobic composting moisture control method of this embodiment.

[0078] Figure 3 This is the second flow chart of the method for controlling moisture in aerobic composting of livestock and poultry manure provided by the present invention. Figure 3 The following is an explanation of the method for controlling moisture in aerobic composting of livestock and poultry manure according to an embodiment of the present application in conjunction with an optional example. In this optional example, the following steps may be included: S1, determine the initial parameters of composting materials; S2, determine the bulk density of materials during composting; S3, calculating and obtaining the water storage in the composting process according to the bulk density of the material; S4, determining the amount of water loss during the composting process according to the water storage information; S5, judging the water replenishment time, calculating the water replenishment amount, and performing quantitative water replenishment according to the set parameters; Specifically, after the compost material is prepared and fully mixed, the initial parameters of the compost material are obtained. The initial parameters include the laying area of ​​the compost material A , bulk density ρ 0 , initial water storage In this embodiment, ρ 0Determined by the ring knife method; the initial water storage is calculated according to the following formula:

[0079] In the formula, is the initial moisture reserve (mm); M0 is the weight of the compost material (kg); ρ w is the density of water (g / cm 3 ); A is the composting material laying area (m 2 ), in this embodiment, it is determined by measuring the bottom area of ​​the composting reactor; ρ 0 is the density of water (g / cm 3 ), with a value of 1 g / cm 3 ; is the moisture content in the initial stage of composting, measured by drying method, in g / g. Preferably, the moisture content in the initial stage of composting is Adjust to 60%. The sample drying method is used for determination and the following formula is used for calculation:

[0080] In the formula, m 1 is the mass of the compost material before drying (g); m 0 is the mass of the compost material after drying (g).

[0081] After composting begins, record the composting time and calculate the bulk density of the material during the composting process using the following formula.

[0082]

[0083] In the formula, ρ i After composting begins i The bulk density of compost at the time (g / cm 3 ); t is the time after composting starts (h). In this embodiment, the composting time is measured in hours after composting starts. The time needs to be re-recorded after each turning or stirring of the compost; It is a function of the relationship between the rate of change of bulk density and composting time.

[0084] According to the bulk density of materials in the composting process ρ i , calculate the moisture storage during the composting process according to the formula.

[0085]

[0086] In the formula, for iMoisture content of composting material at the moment (mm), preferably, W i is the average value of multiple sample points; h is the material sampling layer depth (cm). h The value is 10cm, and stratified sampling is performed every 24 hours. Preferably, at least 3 times are taken each time; ρ ij for i time j Layer material density (g / cm 3 ) (j=1,2,3,…,n, indicating the number of sampling layers), calculated according to the formula; for i time j The moisture content of the layer (g / g) is measured by the drying method in this embodiment.

[0087] According to the moisture storage of materials during composting W i , determine the amount of moisture loss of the material during the composting process according to the formula.

[0088]

[0089] In the formula, for i Moisture loss of composting materials at each moment (mm); Calculate according to the formula; Calculated according to the formula.

[0090] According to the amount of water loss of materials during composting , use the formula to determine the water replenishment time during the composting process.

[0091]

[0092] Wherein, M is the water replenishment start value, which is 20% in this embodiment. When the composting material needs to be replenished with water; when When the water is replenished, it is not necessary to replenish water. The amount of water replenished is calculated according to the formula.

[0093]

[0094] In the formula, is the amount of water added (mm); is the control threshold of moisture storage of compost materials (mm), Calculated according to the formula.

[0095]

[0096] In the formula, for xThe moisture storage control coefficient of the composting material in this stage is: The values ​​are 0.6, 0.5 and 0.25 in the initial stage, degradation stage and mature stage of composting, respectively; H i for i The height of the compost material at the moment (cm), obtained by measuring with a ruler; ρ i for i The average bulk density of composting material at a certain moment is determined by the formula.

[0097] Figure 4 Schematic diagram of the structure of the livestock and poultry manure aerobic composting moisture control device provided by the present invention, such as Figure 4 As shown, including but not limited to the following modules: The first execution module 401 is used to divide the compost material horizontally into a plurality of compost material layers; The second execution module 402 is used to execute preset steps with each of the multiple compost material layers as a target compost material layer to obtain a target moisture reserve corresponding to the target compost material layer; The first determination module 403 is used to determine the moisture reserve at the current moment according to the target moisture reserve corresponding to each compost material layer in the multiple compost material layers, wherein the moisture reserve at the current moment is the total moisture reserve of the compost material at the current moment; The second determination module 404 is used to determine the current water replenishment amount according to the current water reserve when it is determined that water needs to be replenished to the compost material according to the current water reserve and the initial water reserve, wherein the initial water reserve is the total water reserve of the compost material at the initial moment of composting; Preset steps include: Determine the target volume of the target composting material layer according to the layer depth and bottom area of ​​the target composting material layer; Determining the target bulk density at the current moment according to the initial target bulk density of the target compost material layer at the initial moment and the target relationship function, wherein the target relationship function is used to reflect the relationship between the bulk density of the target compost material layer and time; The target water reserve is obtained according to the target volume, the target bulk density at the current moment and the target water content at the current moment, wherein the target water content at the current moment is the water content of the target composting material layer at the current moment.

[0098] Through the embodiments of the present application, the compost material is horizontally divided into a plurality of compost material layers; each of the plurality of compost material layers is used as a target compost material layer to execute preset steps to obtain a target moisture reserve corresponding to the target compost material layer; the moisture reserve at the current moment is determined according to the target moisture reserve corresponding to each of the plurality of compost material layers, wherein the moisture reserve at the current moment is the total moisture reserve of the compost material at the current moment; when it is determined that the compost material needs to be replenished with water according to the moisture reserve at the current moment and the initial moisture reserve, the current replenishment amount is determined according to the moisture reserve at the current moment, wherein the initial moisture reserve is the total moisture reserve of the compost material at the initial moment of starting composting; the preset steps The method comprises the following steps, comprising: determining a target volume of a target composting material layer according to a layer depth and a bottom area of ​​the target composting material layer; determining a target bulk density at a current moment according to an initial target bulk density of the target composting material layer at an initial moment and a target relationship function, wherein the target relationship function is used to reflect the relationship between the bulk density and time of the target composting material layer; obtaining a target moisture reserve according to the target volume, the target bulk density at a current moment and the target moisture content at a current moment, wherein the target moisture content at a current moment is the moisture content of the target composting material layer at a current moment; thereby solving the technical problem that a moisture control method for aerobic composting of livestock and poultry manure in the related art cannot meet the actual water replenishment demand of composting, thereby affecting the composting effect, thereby improving the composting effect.

[0099] It should be noted that the livestock and poultry manure aerobic composting moisture control device provided by the present invention can execute the livestock and poultry manure aerobic composting moisture control method of any of the above embodiments during specific operation, which will not be described in detail in this embodiment.

[0100] Figure 5 is a schematic diagram of the structure of the electronic device provided by the present invention, such as Figure 5As shown, the electronic device may include: a processor 510, a communications interface 520, a memory 530 and a communications bus 540, wherein the processor 510, the communications interface 520 and the memory 530 communicate with each other through the communications bus 540. The processor 510 may call the logic instructions in the memory 530 to execute the moisture control method for aerobic composting of livestock and poultry manure, the method comprising: dividing the compost material horizontally into a plurality of compost material layers; taking each of the plurality of compost material layers as a target compost material layer to execute preset steps to obtain a target moisture reserve corresponding to the target compost material layer; determining the moisture reserve at the current moment according to the target moisture reserve corresponding to each of the plurality of compost material layers, wherein the moisture reserve at the current moment is the total moisture reserve of the compost material at the current moment; when it is determined that the compost material needs to be replenished with water according to the moisture reserve at the current moment and the initial moisture reserve, according to the current moisture reserve; The method comprises the following steps: determining a target volume of a target compost material layer according to a layer depth and a bottom area of ​​the target compost material layer; determining a target bulk density at a current moment according to an initial target bulk density of the target compost material layer at an initial moment and a target relationship function, wherein the target relationship function is used to reflect the relationship between the bulk density and time of the target compost material layer; obtaining a target water reserve according to the target volume, the target bulk density at a current moment and the target water content at a current moment, wherein the target water content at a current moment is the water content of the target compost material layer at a current moment.

[0101] In addition, the logic instructions in the above-mentioned memory 530 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0102] On the other hand, the present invention also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the livestock and poultry manure aerobic composting moisture control method provided by the above-mentioned embodiments, the method comprising: dividing the compost material level into multiple compost material layers; taking each of the multiple compost material layers as a target compost material layer to execute preset steps to obtain a target moisture reserve corresponding to the target compost material layer; determining the moisture reserve at the current moment according to the target moisture reserve corresponding to each of the multiple compost material layers, wherein the moisture reserve at the current moment is the total moisture reserve of the compost material at the current moment. ; When it is determined that water needs to be added to the compost material according to the current water reserve and the initial water reserve, the current water addition amount is determined according to the current water reserve, wherein the initial water reserve is the total water reserve of the compost material at the initial moment of composting; the preset steps include: determining the target volume of the target compost material layer according to the layer depth and bottom area of ​​the target compost material layer; determining the target bulk density at the current moment according to the initial target bulk density of the target compost material layer at the initial moment and the target relationship function, wherein the target relationship function is used to reflect the relationship between the bulk density and time of the target compost material layer; obtaining the target water reserve according to the target volume, the current target bulk density and the current target water content, wherein the current target water content is the water content of the target compost material layer at the current moment.

[0103] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented when the computer program is executed by a processor to execute the livestock and poultry manure aerobic composting moisture control method provided in the above embodiments, the method comprising: dividing the compost material level into a plurality of compost material layers; taking each of the plurality of compost material layers as a target compost material layer to execute a preset step to obtain a target moisture reserve corresponding to the target compost material layer; determining the moisture reserve at a current moment according to the target moisture reserve corresponding to each of the plurality of compost material layers, wherein the moisture reserve at a current moment is the total moisture reserve of the compost material at a current moment; and determining the moisture reserve at a current moment according to the moisture reserve at a current moment and the initial moisture reserve. When it is determined that water needs to be added to the compost material according to the reserves, the current water addition amount is determined according to the water reserves at the current moment, wherein the initial water reserves are the total water reserves of the compost material at the initial moment of composting. The preset steps include: determining the target volume of the target compost material layer according to the layer depth and bottom area of ​​the target compost material layer; determining the target bulk density at the current moment according to the initial target bulk density of the target compost material layer at the initial moment and the target relationship function, wherein the target relationship function is used to reflect the relationship between the bulk density and time of the target compost material layer; obtaining the target water reserves according to the target volume, the target bulk density at the current moment and the target water content at the current moment, wherein the target water content at the current moment is the water content of the target compost material layer at the current moment.

[0104] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0105] Through the description of the above implementation modes, those skilled in the art can clearly understand that each implementation mode can be implemented by means of software plus a necessary general hardware platform, or of course by hardware. Based on such an understanding, the above technical solution can essentially or in other words be embodied in the form of a software product that contributes to the prior art. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiment.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for controlling moisture in aerobic composting of livestock and poultry manure, characterized in that: include: Dividing the compost material horizontally into a plurality of compost material layers; Taking each of the plurality of compost material layers as a target compost material layer and executing a preset step to obtain a target moisture reserve corresponding to the target compost material layer; Determining the moisture reserve at a current moment according to the target moisture reserve corresponding to each compost material layer in the plurality of compost material layers, wherein the moisture reserve at a current moment is the total moisture reserve of the compost material at the current moment; When it is determined that the compost material needs to be replenished with water according to the current water reserve and the initial water reserve, the current replenishment amount is determined according to the current water reserve, wherein the initial water reserve is the total water reserve of the compost material at the initial moment of composting; The preset steps include: Determining a target volume of the target compost material layer according to the layer depth and bottom area of ​​the target compost material layer; Determining the target bulk density at the current moment according to the initial target bulk density of the target compost material layer at the initial moment and a target relationship function, wherein the target relationship function is used to reflect the relationship between the bulk density of the target compost material layer and time; The target water reserve is obtained according to the target volume, the target bulk density at the current moment and the target water content at the current moment, wherein the target water content at the current moment is the water content of the target compost material layer at the current moment.

2. The method for controlling moisture content of livestock and poultry manure aerobic composting according to claim 1, characterized in that: The target relationship function is determined by the following steps: Acquiring historical bulk density data of the target composting material layer, wherein the historical bulk density data includes the bulk density of the target composting material layer at multiple historical moments in a historical composting process; Constructing an initial target relationship function based on the historical bulk density data, wherein the initial target relationship function is a polynomial model; Calculating the partial derivative of each parameter of the initial target relationship function based on the mean square error loss function to obtain multiple partial derivatives; Setting the plurality of partial derivatives to 0 to obtain a set of equations, wherein each equation in the set of equations corresponds to a parameter of the initial objective relationship function; Solving the set of equations using the Levenberg-Marquardt method to obtain the best estimate of each parameter in the initial objective relationship function; Each parameter in the initial target relationship function is updated to the corresponding optimal estimated value to obtain the target relationship function.

3. The method for controlling moisture content of livestock and poultry manure aerobic composting according to claim 1, characterized in that: When it is determined that water needs to be added to the compost material according to the current water reserve and the initial water reserve, before determining the current water addition amount according to the current water reserve, the method further includes: Subtract the current water reserve from the initial water reserve to obtain the current water loss; Dividing the current water loss by the initial water reserve to obtain a current ratio; Comparing the current ratio with the water replenishment start value; When the current ratio is greater than or equal to the water replenishment start value, it is determined that water needs to be replenished to the composting material.

4. The method for controlling moisture content of livestock and poultry manure aerobic composting according to claim 1, characterized in that: The initial water reserve is determined by the following steps: multiplying the bottom area of ​​the compost material by the density of water to obtain a first product; multiplying the weight of the compost material at the initial moment by the moisture content of the compost material at the initial moment to obtain a second product, wherein the moisture content of the compost material at the initial moment is determined by a sampling method; The second product is divided by the first product to obtain the initial water reserve.

5. The method for controlling moisture content of livestock and poultry manure aerobic composting according to any one of claims 1 to 4, characterized in that: Determining the current water replenishment amount according to the water reserve at the current moment includes: Determining a current composting stage of the composting material at the current moment according to a temperature change of the composting material; determining a current control coefficient according to the current composting stage; Multiplying the current control coefficient by the bulk density and volume of the compost material at the current moment to obtain a current moisture control threshold; The current water replenishment amount is obtained by subtracting the current water reserve amount from the current water control threshold.

6. The method for controlling moisture content of livestock and poultry manure aerobic composting according to claim 5, characterized in that: The determining the current composting stage of the composting material at the current moment according to the temperature change of the composting material comprises: When the temperature change of the compost material from the initial moment to the current moment is a temperature rising process, and the temperature of the compost material at the current moment is greater than or equal to 40° C., it is judged that the compost material is in a high temperature stage at the current moment; When the temperature change of the compost material from the initial moment to the current moment is a process of heating up and then cooling down, and the temperature of the compost material at the current moment is less than 40° C. and is not within the preset temperature range, it is judged that the compost material is in the cooling stage at the current moment, wherein the ambient temperature at the current moment is the median value of the preset temperature range; When the temperature change of the compost material from the initial moment to the current moment is a process of heating up and then cooling down, and the temperature of the compost material at the current moment is within the preset temperature range, it is judged that the compost material is in the completion stage at the current moment; Determining the current control coefficient according to the current composting stage includes: When the current composting stage is the high temperature stage, the current control coefficient is the first coefficient; In the case where the current composting stage is the cooling stage, the current control coefficient is the second coefficient, wherein the first coefficient is greater than the second coefficient; When the current composting stage is the completion stage, the current control coefficient is 0.

7. A moisture control device for aerobic composting of livestock and poultry manure, characterized in that: include: A first execution module is used to divide the compost material horizontally into a plurality of compost material layers; A second execution module is used to execute preset steps with each of the multiple compost material layers as a target compost material layer to obtain a target moisture reserve corresponding to the target compost material layer; A first determination module is used to determine the moisture reserve at a current moment according to the target moisture reserve corresponding to each compost material layer in the multiple compost material layers, wherein the moisture reserve at the current moment is the total moisture reserve of the compost material at the current moment; A second determination module is used to determine a current water replenishment amount according to the current water reserve when it is determined that the compost material needs to be replenished with water according to the current water reserve and the initial water reserve, wherein the initial water reserve is the total water reserve of the compost material at the initial moment of composting; The preset steps include: Determining a target volume of the target compost material layer according to the layer depth and bottom area of ​​the target compost material layer; Determining the target bulk density at the current moment according to the initial target bulk density of the target compost material layer at the initial moment and a target relationship function, wherein the target relationship function is used to reflect the relationship between the bulk density of the target compost material layer and time; The target water reserve is obtained according to the target volume, the target bulk density at the current moment and the target water content at the current moment, wherein the target water content at the current moment is the water content of the target compost material layer at the current moment.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the method for controlling moisture in aerobic composting of livestock and poultry manure as claimed in any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for controlling moisture in aerobic composting of livestock and poultry manure as claimed in any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the method for controlling moisture in aerobic composting of livestock and poultry manure as claimed in any one of claims 1 to 6 is implemented.

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