Cow dung compost fermentation equipment and method

Abstract

The invention provides cow dung compost fermentation equipment and a cow dung compost fermentation method. The method comprises the following steps: determining a compost gap of a cow dung material in each fermentation stage according to the stage density of each fermentation stage and the volume of all cow dung materials; performing regression prediction on the fermentation effect of the cow dung material through microbial activity in composting fermentation and each composting gap to obtain the effective fermentation amount of the cow dung material; determining the porosity gradient of the cow dung material in each composting depth interval according to each composting gap and the stirring frequency of the cow dung material, and further performing trend extrapolation on the stirring gain of the cow dung fermentation effect by all the porosity gradients to obtain the stirring effect of composting fermentation; according to the effective fermentation amount and the stirring effect, the composting maturity of the cow dung material after composting fermentation is determined, and the stirring frequency of the cow dung material in each fermentation stage is subjected to self-adaptive adjustment based on the composting maturity. Based on the scheme, the stirring frequency of the cow dung material in each fermentation stage can be adaptively adjusted.

Description

Technical Field

[0001] The present application relates to the field of bio-agricultural technology, and more specifically, to a cow dung composting fermentation device and method. Background Art

[0002] With the development of sustainable agriculture, the concept of biological agriculture has gradually been widely accepted. The use of organic fertilizer plays an important role in improving soil quality and crop yield. Cow dung, as an important source of organic fertilizer, has a fermentation process that is of great significance for improving fertilizer quality and reducing environmental pollution. During the fermentation process of cow dung, the activity of microorganisms and fermentation conditions directly affect the production efficiency of organic fertilizer.

[0003] In the traditional cow dung fermentation process, the stirring frequency is often a fixed parameter, lacking dynamic adjustment for different fermentation stages and environmental conditions. The fixed stirring frequency may not be able to fully meet the microbial needs of different fermentation stages. In the initial fermentation stage, the microbial activity is high and the oxygen demand is large. If the stirring frequency is insufficient, it will lead to insufficient oxygen supply, thereby inhibiting the growth of microorganisms. In the later stage of fermentation, the material structure is relatively stable. Too frequent stirring may cause material loss and increased energy consumption. The fixed stirring frequency cannot effectively cope with the changes in gas fluidity caused by changes in the composting gap, thereby affecting the overall fermentation effect. Therefore, how to achieve adaptive adjustment of the stirring frequency of cow dung materials in each fermentation stage to improve the fermentation effect of cow dung composting fermentation equipment is a difficult problem faced by the industry. Summary of the invention

[0004] The present application provides a cow dung composting fermentation device and method, which can realize adaptive adjustment of the stirring frequency of the cow dung material in each fermentation stage, thereby improving the fermentation effect of the cow dung composting fermentation device.

[0005] In a first aspect, the present application provides a stirring and regulating method for cow dung composting fermentation, comprising: Monitor the composting and fermentation process of cow dung, and collect the volume of cow dung material in the cow dung composting and fermentation equipment within a predetermined time period; Determine the stage density of the composting fermentation process of the cow dung material at each fermentation stage, and determine the composting gap of the cow dung material in each fermentation stage by the stage density of each fermentation stage and all cow dung material volumes; Determine the microbial activity in the composting fermentation according to the composting environment parameters in the cow dung composting fermentation equipment, and perform regression prediction on the fermentation effect of the cow dung material through the microbial activity and each composting gap to obtain the effective fermentation amount of the cow dung material; Based on the heat conduction effect in the cow dung material, all composting depth intervals in the cow dung composting fermentation equipment are determined, and the pore gradient of the cow dung material in each composting depth interval is determined according to each composting gap and the stirring frequency of the cow dung material, and then the stirring gain of the cow dung fermentation effect is trend extrapolated from all the pore gradients to obtain the stirring effect of the composting fermentation; The compost maturity of the cow dung material after composting and fermentation is determined according to the effective fermentation amount and the stirring effect, and the stirring frequency of the cow dung material in each fermentation stage is adaptively adjusted based on the compost maturity.

[0006] In some embodiments, determining the stage density of the composting fermentation process of the cow dung material at each fermentation stage specifically includes: Obtaining the initial density of the cow dung material; For each fermentation stage, the fermentation level of the cow dung material in the fermentation stage is obtained; The stage density of the cow dung material in the fermentation stage is determined according to the initial density and the fermentation level, and then the stage density of the cow dung material in each fermentation stage is obtained.

[0007] In some embodiments, determining the composting gap of the cow dung material in each fermentation stage by the stage density of each fermentation stage and the volume of all cow dung materials specifically comprises: For each fermentation stage, the material volume information of the cow dung material in the fermentation stage is filtered from all cow dung material volumes; Determine the effective density of the cow dung material in the fermentation stage according to the material volume information; The composting gap of the cow dung material in the fermentation stage is determined according to the effective density and the stage density in the fermentation stage, and then the composting gap of the cow dung material in each fermentation stage is obtained.

[0008] In some embodiments, the fermentation effect of the cow dung material is regressed and predicted by the microbial activity and each composting interval to obtain the effective fermentation amount of the cow dung material, which specifically includes: For each fermentation stage, determining the microbial compatibility of the cow dung material in the fermentation stage through the microbial activity; Based on the regression model combined with the microbial matching degree and the composting gap of the cow dung material in the fermentation stage, the fermentation completion rate of the cow dung material in the fermentation stage is predicted, and then the fermentation completion rate of the cow dung material in each fermentation stage is obtained; The effective fermentation amount of the cow dung material is determined based on all the fermentation completion rates.

[0009] In some embodiments, determining the pore gradient of the cow dung material at each composting depth interval according to each composting gap and the stirring frequency of the cow dung material specifically includes: For each composting depth interval, the porosity change of the cow dung material in the composting depth interval is predicted according to the stirring frequency of the cow dung material, and the porosity change curve is obtained; Determine the porosity difference value of the cow dung material in each fermentation stage under the composting depth interval through the porosity variation curve and each composting gap; The pore gradient of the cow dung material in the composting depth interval is determined based on all the pore difference values, and then the pore gradient of the cow dung material in each composting depth interval is obtained.

[0010] In some embodiments, the stirring gain of the cow dung fermentation effect is trend extrapolated by all pore gradients to obtain the stirring effect of compost fermentation, which specifically includes: Determine the initial fermentation volume of cow dung composting without stirring based on thermodynamic model; Determine the gain coefficient of cow dung fermentation effect according to all pore gradients; Predicting the fermentation amount of the compost after stirring based on the gain coefficient and the initial fermentation amount; The stirring effect of stirring on the fermentation effect of cow dung is determined according to the compost fermentation amount and the initial fermentation amount.

[0011] In some embodiments, determining all composting depth intervals in the cow dung composting fermentation equipment based on the heat conduction effect in the cow dung material specifically includes: Determine the depth-temperature curve based on the heat conduction effect in the cow dung material; All composting depth intervals in the cow dung composting fermentation equipment are determined according to the depth-temperature variation curve.

[0012] In a second aspect, the present application provides a cow dung composting fermentation device, comprising a stirring and regulating unit, wherein the stirring and regulating unit comprises: A collection module is used to monitor the composting and fermentation process of cow dung and collect the volume of cow dung materials in the cow dung composting and fermentation equipment within a predetermined time period; A processing module is used to determine the stage density of the composting fermentation process of the cow dung material at each fermentation stage, and determine the composting gap of the cow dung material in each fermentation stage according to the stage density of each fermentation stage and the volume of all cow dung materials; The processing module is also used to determine the microbial activity in the composting fermentation according to the composting environment parameters in the cow dung composting fermentation equipment, and to perform regression prediction on the fermentation effect of the cow dung material through the microbial activity and each composting gap to obtain the effective fermentation amount of the cow dung material; The processing module is also used to determine all composting depth intervals in the cow dung composting fermentation equipment based on the heat conduction effect in the cow dung material, determine the pore gradient of the cow dung material in each composting depth interval according to each composting gap and the stirring frequency of the cow dung material, and then perform trend extrapolation on the stirring gain of the cow dung fermentation effect from all the pore gradients to obtain the stirring effect of the composting fermentation; The execution module is used to determine the compost maturity of the cow dung material after composting and fermentation according to the effective fermentation amount and the stirring effect, and adaptively adjust the stirring frequency of the cow dung material in each fermentation stage based on the compost maturity.

[0013] In a third aspect, the present application provides a computer device, comprising a memory and a processor, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the computer device executes the above-mentioned stirring and regulating method for cow dung composting fermentation.

[0014] In a fourth aspect, the present application provides a computer-readable storage medium, wherein instructions or codes are stored in the computer-readable storage medium. When the instructions or codes are executed on a computer, the computer implements the above-mentioned stirring and adjusting method for cow dung composting fermentation.

[0015] The technical solution provided by the embodiments disclosed in this application has the following beneficial effects: In a cow dung composting and fermentation device and method provided in the present application, the composting and fermentation process of cow dung is monitored, and the volume of cow dung material in the cow dung composting and fermentation device within a predetermined time period is collected; Determine the stage density of the composting fermentation process of the cow dung material at each fermentation stage, and determine the composting gap of the cow dung material in each fermentation stage by the stage density of each fermentation stage and all cow dung material volumes; Determine the microbial activity in the composting fermentation according to the composting environment parameters in the cow dung composting fermentation equipment, and perform regression prediction on the fermentation effect of the cow dung material through the microbial activity and each composting gap to obtain the effective fermentation amount of the cow dung material; Based on the heat conduction effect in the cow dung material, all composting depth intervals in the cow dung composting fermentation equipment are determined, and the pore gradient of the cow dung material in each composting depth interval is determined according to each composting gap and the stirring frequency of the cow dung material, and then the stirring gain of the cow dung fermentation effect is trend extrapolated from all the pore gradients to obtain the stirring effect of the composting fermentation; The compost maturity of the cow dung material after composting and fermentation is determined according to the effective fermentation amount and the stirring effect, and the stirring frequency of the cow dung material in each fermentation stage is adaptively adjusted based on the compost maturity.

[0016] It can be seen that in the present application, the compost maturity of the cow dung material after composting and fermentation is determined according to the effective fermentation amount and the stirring effect, and the stirring frequency of the cow dung material in each fermentation stage is adaptively adjusted based on the compost maturity; first, the effective fermentation amount is determined to obtain the effective amount of the cow dung material that can be converted into organic fertilizer. By accurately measuring the effective fermentation amount, the conversion efficiency of the cow dung material can be evaluated, and the degree of success of the fermentation process can be understood, thereby improving the accuracy of subsequent adjustment of the stirring frequency to ensure that the fermentation process achieves the best effect, thereby improving the fermentation effect of the cow dung composting fermentation equipment; then, the stirring frequency is determined. The effect can be obtained by the stirring operation on the fermentation effect of cow dung. Appropriate stirring can prevent material stratification, ensure that oxygen is fully distributed to each part, improve the activity of microorganisms, and thus accelerate the fermentation process. By monitoring and evaluating the stirring effect, the stirring frequency can be dynamically adjusted to respond to changes in different fermentation stages and environmental conditions, thereby optimizing the fermentation efficiency and ensuring that the cow dung material can be converted under the most favorable conditions, thereby further improving the fermentation effect of cow dung. In summary, based on the above scheme, the stirring frequency of the cow dung material in each fermentation stage can be adaptively adjusted, thereby improving the fermentation effect of the cow dung composting fermentation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 is an exemplary flow chart of a stirring and regulating method for cow dung composting fermentation according to some embodiments of the present application; Figure 2 is a schematic diagram of a process for determining a pore gradient according to some embodiments of the present application; Figure 3 is a schematic structural diagram of a stirring and regulating unit according to some embodiments of the present application; Figure 4 It is a structural schematic diagram of a computer device for implementing a stirring and regulating method for cow dung composting fermentation according to some embodiments of the present application. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] In order to better understand the technical solution of the present application, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] refer to Figure 1 , which is an exemplary flow chart of a stirring and regulating method for cow dung composting fermentation according to some embodiments of the present application, and the stirring and regulating method for cow dung composting fermentation mainly comprises the following steps: In step 101, the composting fermentation process of cow dung is monitored, and the volume of cow dung material in the cow dung composting fermentation equipment within a predetermined time period is collected.

[0022] In the present application, the volume of cow dung material refers to the amount of space occupied by the cow dung material during the composting and fermentation process of cow dung. The volume of cow dung material reflects the physical state of the cow dung during the composting process. Usually, with the progress of fermentation and the decomposition of organic matter, the volume will gradually decrease. By monitoring the volume change of cow dung material, the progress of fermentation can be evaluated and it can be determined whether operations such as turning the compost or adding water are needed. The change in the volume of cow dung material is also related to the density and porosity of the compost, which indirectly affects the activity of microorganisms and the fermentation efficiency.

[0023] In specific implementation, the automated laser rangefinder in the cow dung composting and fermentation equipment can be used to collect the three-dimensional geometric shapes of the cow dung material within a predetermined time period (the default is 10 days), and the size of each three-dimensional geometric shape can be calculated as the volume of the cow dung material, so as to obtain the volume of the cow dung material in the cow dung composting and fermentation equipment within the predetermined time period.

[0024] In step 102, the stage density of the composting fermentation process of the cow dung material at each fermentation stage is determined, and the composting gap of the cow dung material in each fermentation stage is determined according to the stage density of each fermentation stage and the volume of all cow dung materials.

[0025] It should be noted that the fermentation stage in the present application refers to different time periods divided according to the changes in physical and chemical parameters (such as temperature, humidity, oxygen level, etc.) of cow dung materials during the composting fermentation process. The fermentation stages in the present application are divided into a warming period, a high-temperature period, a cooling period and a mature period. During the warming period, microorganisms begin to decompose the materials and the temperature rises rapidly. During the high-temperature period, high-temperature microorganisms dominate and quickly decompose organic matter. During the cooling period, the fermentation reaction gradually weakens and the temperature begins to drop. During the mature period, the fermentation reaction tends to be stable, the temperature is close to the ambient temperature, and the compost enters a stable decomposition stage. Each fermentation stage corresponds to different microbial activities and fermentation reaction rates. All cow dung material volumes can be divided into each fermentation stage based on the changes in physical and chemical parameters (such as temperature, humidity, oxygen level, etc.) in a predetermined time period.

[0026] In some embodiments, determining the stage density of the composting fermentation process of cow dung materials at each fermentation stage can be achieved by using the following steps: Obtaining the initial density of the cow dung material; For each fermentation stage, the fermentation level of the cow dung material in the fermentation stage is obtained; The stage density of the cow dung material in the fermentation stage is determined according to the initial density and the fermentation level, and then the stage density of the cow dung material in each fermentation stage is obtained.

[0027] It should be noted that in this application, stage density is a unit mass that reflects the degree of organic matter degradation at different fermentation stages during the cow dung composting fermentation process; initial density refers to the density of the cow dung material at the beginning of composting; fermentation level is a parameter that characterizes the state of microbial activity and the degree of organic matter decomposition during the composting fermentation process. Different fermentation levels represent different degradation rates of organic matter, and the fermentation level directly affects the density change of the cow dung material.

[0028] In the specific implementation, first, the mass of the cow dung material at the beginning of fermentation is obtained by weighing as the initial mass (unit: g), and the volume of the cow dung material at the beginning of fermentation is measured by an automatic laser rangefinder as the initial volume, and the ratio of the initial mass to the initial volume can be used as the initial density of the cow dung material; then, for each fermentation stage, the composting temperature, pH value, oxygen content and other physical and chemical parameters of the cow dung material in the fermentation stage can be monitored, and the physical and chemical parameters can be fermented and evaluated using a multivariate analysis model (such as a multivariate linear regression model or a principal component analysis model), so as to obtain the fermentation level of the cow dung material in the fermentation stage; finally, a hierarchical model based on a neural network (such as a convolutional neural network model) is initialized, the initial density is used as the initial value of the input layer in the hierarchical model, the fermentation level of the cow dung material in the fermentation stage is used as the efficiency of the cow dung fermentation in the hierarchical model, and the density of the cow dung material in the fermentation stage is hierarchically evaluated using the hierarchical model, and the evaluation result of the hierarchical model can be used as the stage density of the cow dung material in the fermentation stage. The stage density of the cow dung material in each fermentation stage can be obtained in the above manner.

[0029] It should be noted that the multivariate analysis model is a type of statistical model used to simultaneously analyze and process multiple variables. In this application, the multivariate analysis model can comprehensively consider the relationship between multiple input variables, thereby comprehensively analyzing and predicting complex systems. For the various physical and chemical parameters in the cow dung fermentation process, the multivariate analysis model can combine multiple physical and chemical parameters (such as temperature, humidity, oxygen content, pH value, etc.), and comprehensively evaluate the level changes in the fermentation process through statistical analysis or machine learning algorithms, which helps to accurately predict the fermentation process, thereby more accurately evaluating the fermentation level of each fermentation stage.

[0030] In addition, it should be noted that the hierarchical model is a mathematical or computational model that divides complex problems or data structures into multiple levels, each level representing different sub-problems or sub-processes. In the process of cow dung fermentation, the hierarchical model can be used to gradually analyze and predict the physical and biological parameters of different stages, such as density, fermentation efficiency, microbial activity, etc. Hierarchical models are widely used in multivariate analysis, distribution estimation, machine learning, and environmental modeling. The following are the functions, structures, and advantages of the hierarchical model. The neural network-based hierarchical model can dynamically reflect the physical and chemical changes of cow dung materials during the fermentation process and accurately predict the density and fermentation efficiency of each stage.

[0031] In some embodiments, determining the composting gap of the cow dung material in each fermentation stage by the stage density of each fermentation stage and the volume of all cow dung materials can be achieved by the following steps: For each fermentation stage, the material volume information of the cow dung material in the fermentation stage is filtered from all cow dung material volumes; Determine the effective density of the cow dung material in the fermentation stage according to the material volume information; The composting gap of the cow dung material in the fermentation stage is determined according to the effective density and the stage density in the fermentation stage, and then the composting gap of the cow dung material in each fermentation stage is obtained.

[0032] It should be noted that, in the present application, composting gap refers to the proportion of space in the composting material that is not filled by material, which usually affects oxygen penetration, fermentation efficiency and microbial activity; material volume information refers to the volume change of cow dung material in each fermentation stage, and the material volume information can be used to evaluate the reduction or expansion of the volume of the material in each fermentation stage; effective density refers to the volume of cow dung material that can actually participate in biological fermentation in a specified fermentation stage.

[0033] In the specific implementation, first, for each fermentation stage, the material volume information of the collection of cow dung material volumes in the fermentation stage is screened from all cow dung material volumes; then, the sensor of the cow dung composting fermentation equipment is used to collect the material mass (unit: g) at the beginning and end of the fermentation stage, and the average of the material mass at the beginning and end of the fermentation stage can be used as the effective mass of the cow dung material in the fermentation stage, and the ratio of the effective mass to the average of all cow dung material volumes in the material volume information can be used as the effective density of the cow dung material in the fermentation stage; finally, the ratio of the effective density to the stage density in the fermentation stage can be used as the effective density ratio, and the difference between 1 and the effective density ratio can be used as the composting gap of the cow dung material in the fermentation stage.

[0034] In step 103, the microbial activity in the composting fermentation is determined according to the composting environment parameters in the cow dung composting fermentation equipment, and the fermentation effect of the cow dung material is regressively predicted by the microbial activity and each composting gap to obtain the effective fermentation amount of the cow dung material.

[0035] It should be noted that, in the present application, composting environmental parameters refer to the physical, chemical and biological conditions that affect the activity of microorganisms, material conversion and fermentation efficiency during the composting fermentation process. The composting environmental parameters mainly include temperature, humidity, oxygen content, pH value and nutrients. Among them, temperature affects the growth and metabolic rate of microorganisms. Suitable temperature can accelerate the degradation process of organic matter. The moisture content (i.e. humidity) in the compost material affects the survival of microorganisms. Too dry or too wet will inhibit their activity. Aerobic microorganisms require sufficient oxygen for metabolism. Anoxic conditions will affect the fermentation efficiency. The pH (i.e. pH value) affects the growth of microorganisms. The appropriate pH range is conducive to microbial reproduction. The concentration of nutrients (such as nitrogen, phosphorus, potassium and other elements) directly affects the metabolic activity of microorganisms.

[0036] In some embodiments, determining the microbial activity in composting fermentation according to the composting environment parameters in the cow dung composting fermentation equipment can be achieved by the following steps: Obtain key environmental parameters that affect microbial activity in cow dung composting fermentation equipment from composting environmental parameters; The activity of microorganisms in compost fermentation is quantified based on a logistic growth (LG) model combined with the key environmental parameters to obtain the activity of microorganisms in compost fermentation.

[0037] It should be noted that, in the present application, microbial activity refers to the comprehensive performance of the metabolic capacity and growth rate of microorganisms under specific environmental conditions. Microbial activity directly affects the efficiency and quality of the composting fermentation process. Good microbial activity can accelerate the decomposition of organic matter, promote the conversion and release of nutrients, and thus improve the fertilizer efficiency of composting; key environmental parameters refer to the physical and chemical factors that have a significant impact on microbial activity during the composting fermentation process.

[0038] In the specific implementation, first, a set of environmental parameters that affect the activity of microorganisms in the cow dung composting fermentation equipment can be obtained from the composting environmental parameters of the microorganisms as key environmental parameters; then, an LG model is initialized, and each environmental parameter in the key environmental parameters is used as the evaluation parameter of the LG model. The LG model is used to quantify the activity of microorganisms in the composting fermentation, and the result of the activity quantification can be used as the activity of microorganisms in the composting fermentation. Among them, the LG model is a mathematical model widely used in ecology, population biology, resource management and other fields. It is used to describe the growth process of biological populations under limited resources. The model can effectively describe the process from rapid population growth to reaching the environmental carrying capacity.

[0039] In some embodiments, the fermentation effect of the cow dung material is regressed and predicted by the microbial activity and each composting interval to obtain the effective fermentation amount of the cow dung material, which can be achieved by the following steps: For each fermentation stage, determining the microbial compatibility of the cow dung material in the fermentation stage through the microbial activity; Based on the regression model combined with the microbial matching degree and the composting gap of the cow dung material in the fermentation stage, the fermentation completion rate of the cow dung material in the fermentation stage is predicted, and then the fermentation completion rate of the cow dung material in each fermentation stage is obtained; The effective fermentation amount of the cow dung material is determined based on all the fermentation completion rates.

[0040] It should be noted that, in the present application, the effective fermentation amount refers to the mass of organic matter actually converted through microbial activity; in specific implementation, first, for each fermentation stage, the microbial activity can be compared with the ideal activity level of the fermentation stage using correlation analysis, and the comparison result of the correlation analysis can be used as the microbial matching degree of the cow dung material in the fermentation stage, and the microbial matching degree indicates the degree of matching between the microbial activity and the optimal activity standard; then, a logistic regression model based on a support vector machine is initialized, and the determination of the fermentation completion rate is regarded as a binary classification problem, that is, completed or not completed, and the microbial matching degree and the composting gap of the cow dung material in the fermentation stage are used as the logic The regression coefficient of the logistic regression model is used to predict the fermentation completion of the cow dung material. The prediction result of the logistic regression model can be used as the fermentation completion rate of the cow dung material in the fermentation stage. The fermentation completion rate of the cow dung material in each fermentation stage can be obtained in the above manner. The fermentation completion rate represents the proportion of the cow dung material that reaches a predetermined degree of conversion in each fermentation stage during the fermentation process. Finally, the influence prediction weight of each fermentation stage on the final fermentation effect can be obtained in the central control system of the cow dung composting fermentation equipment, and each influence prediction weight is used as the weight of the corresponding fermentation completion rate to calculate the weighted average of all fermentation completion rates as the effective fermentation amount of the cow dung material.

[0041] In step 104, all composting depth intervals in the cow dung composting fermentation equipment are determined based on the heat conduction effect in the cow dung material, and the pore gradient of the cow dung material in each composting depth interval is determined according to each composting gap and the stirring frequency of the cow dung material. Then, the stirring gain of the cow dung fermentation effect is trend extrapolated from all the pore gradients to obtain the stirring effect of the composting fermentation.

[0042] It should be noted that in this application, the heat conduction effect in cow dung material.

[0043] In some embodiments, determining all composting depth intervals in the cow dung composting fermentation equipment based on the heat conduction effect in the cow dung material can be achieved by the following steps: Determine the depth-temperature curve based on the heat conduction effect in the cow dung material; All composting depth intervals in the cow dung composting fermentation equipment are determined according to the depth-temperature variation curve.

[0044] It should be noted that the composting depth interval is a depth range divided according to temperature changes. In specific implementation, first, a steady-state heat conduction model is initialized, and the heat conduction effect of the cow dung material is used as the longitudinal change law of the temperature in the steady-state heat conduction model (i.e., the thermal diffusion coefficient). The steady-state heat conduction model is used to predict the temperature change caused by the cow dung material as the composting depth changes. The prediction result of the steady-state heat conduction model can be used as a depth-temperature change curve, which is a curve that describes the temperature change trend at different depths in the cow dung composting; then, based on the temperature gradient threshold method, the temperature in the depth-temperature change curve is divided into multiple depth intervals. In other embodiments, other methods can also be used to divide the depth intervals. It is only necessary to ensure that the depth in each depth interval is continuous and the temperature change value in the depth interval is lower than the set value (the default is 5°C). The divided depth intervals can be used as all composting depth intervals in the cow dung composting fermentation equipment.

[0045] In some embodiments, the pore gradient of the cow dung material at each composting depth interval is determined according to each composting gap and the stirring frequency of the cow dung material, referring to Figure 2 As described above, this figure is a schematic diagram of the process of determining the pore gradient in some embodiments of the present application. In this embodiment, the pore gradient can be determined by the following steps: In step 1041, for each composting depth interval, the porosity change of the cow dung material in the composting depth interval is predicted according to the stirring frequency of the cow dung material to obtain a porosity change curve; In step 1042, the porosity difference value of the cow dung material in each fermentation stage under the composting depth interval is determined by the porosity change curve and each composting gap; In step 1043, the pore gradient of the cow dung material in the composting depth interval is determined according to all the pore difference values, and then the pore gradient of the cow dung material in each composting depth interval is obtained.

[0046] It should be noted that, in the present application, pore gradient refers to the porosity in the depth direction of the compost, which will affect the oxygen flow and fermentation rate inside the material; porosity difference refers to the difference between the porosity at different depth intervals during the fermentation process and the compost gap during the fermentation stage; the porosity change curve represents the porosity change in each compost depth interval during the composting process.

[0047] In specific implementation, first, for each composting depth interval, the initial change curve of the porosity in the time sequence under the composting depth interval can be obtained in the central control console of the cow dung stirring device, and the initial change curve is predicted and corrected according to the stirring frequency of the cow dung material, that is, after the cow dung material is stirred, it is initialized to the composting gap corresponding to the fermentation stage at the stirring moment, and the porosity change curve can be obtained from the predicted and corrected initial change curve; then, for each fermentation stage, the porosity sub-curve of the fermentation stage is intercepted from the porosity change curve, and the average value of the difference between each porosity in the porosity sub-curve and the composting gap in the fermentation stage is calculated as the pore difference value of the cow dung material in the composting depth interval in the fermentation stage. The pore difference value of the cow dung material in the composting depth interval in each fermentation stage can be obtained in the above manner; finally, all the pore difference values ​​can be summed according to the predicted weight of the influence of the fermentation stage on the final fermentation effect in step 103 as the pore gradient of the cow dung material in the composting depth interval, and the pore gradient of the cow dung material in each composting depth interval can be obtained in the above manner.

[0048] In some embodiments, the stirring gain of the cow dung fermentation effect is extrapolated from all pore gradients to obtain the stirring effect of compost fermentation, which can be achieved by the following steps: Determine the initial fermentation volume of cow dung composting without stirring based on thermodynamic model; Determine the gain coefficient of cow dung fermentation effect according to all pore gradients; Predicting the fermentation amount of the compost after stirring based on the gain coefficient and the initial fermentation amount; The stirring effect of stirring on the fermentation effect of cow dung is determined according to the compost fermentation amount and the initial fermentation amount.

[0049] It should be noted that, in the present application, stirring effect refers to a quantitative indicator of the improvement in the fermentation efficiency of cow dung materials by stirring operation; the gain coefficient is a parameter that reflects the degree to which stirring improves the fermentation effect of cow dung materials at different fermentation depths; the composting fermentation amount refers to the reaction amount of the cow dung material after stirring; the initial fermentation amount refers to the reaction amount of the cow dung material without stirring.

[0050] In the specific implementation, first, a thermodynamic model is used to simulate the natural fermentation process of cow dung material without stirring, and the fermentation reaction rate of cow dung material under different temperatures, humidity and oxygen content is analyzed by the thermodynamic model to determine the reaction amount under the initial fermentation conditions, and the reaction amount can be used as the initial fermentation amount of composting fermentation of cow dung material without stirring; secondly, the product of the mean of all pore gradients and the specified relationship value can be used as the gain coefficient of the cow dung fermentation effect, and the specified relationship value refers to the influence value of porosity on the cow dung fermentation effect. The influence value of porosity on the cow dung fermentation effect can be obtained on the central console of the cow dung composting fermentation equipment as the specified relationship value. In other embodiments, a large number of simulation experiments can also be used to calculate the influence value of different porosities on the cow dung fermentation effect as the specified relationship value, which is not limited here; then, the product of the initial fermentation amount and the gain coefficient is used as the gain fermentation amount, and then the sum of the initial fermentation amount and the gain fermentation amount can be used as the compost fermentation amount after stirring; finally, the ratio of the compost fermentation amount to the initial fermentation amount can be used as the stirring effect of stirring on the cow dung fermentation effect.

[0051] In step 105, the compost maturity of the cow dung material after composting and fermentation is determined according to the effective fermentation amount and the stirring effect, and the stirring frequency of the cow dung material in each fermentation stage is adaptively adjusted based on the compost maturity.

[0052] In some embodiments, determining the compost maturity of the cow dung material after composting fermentation according to the effective fermentation amount and the stirring effect can be achieved in the following manner, namely: the product of the effective fermentation amount and the stirring effect can be used as the compost maturity of the cow dung material after composting fermentation. It should be noted that in the present application, the compost maturity is an indicator for evaluating whether the cow dung compost has reached a stable state and a mature stage. The higher the compost maturity, it means that the effective fermentation amount has reached a certain level, the fermentation process is nearing the end, and the stability and safety of the cow dung material are relatively high.

[0053] In some embodiments, adaptive adjustment of the stirring frequency of the cow dung material in each fermentation stage based on the compost maturity can be achieved in the following manner, namely: if the compost maturity is less than a preset maturity threshold, the stirring frequency of the cow dung material in each fermentation stage is increased according to a preset ratio until the compost maturity is greater than or equal to the preset maturity threshold position; if the compost maturity is greater than or equal to the preset maturity threshold, the stirring frequency of the cow dung material in each fermentation stage is not adjusted.

[0054] In the present application, the compost maturity of the cow dung material after composting and fermentation is determined according to the effective fermentation amount and the stirring effect, and the stirring frequency of the cow dung material in each fermentation stage is adaptively adjusted based on the compost maturity; first, the effective fermentation amount is determined to obtain the effective amount of the cow dung material that can be converted into organic fertilizer. By accurately measuring the effective fermentation amount, the conversion efficiency of the cow dung material can be evaluated, and the degree of success of the fermentation process can be understood, thereby improving the accuracy of the subsequent adjustment of the stirring frequency to ensure that the fermentation process achieves the best effect, thereby improving the fermentation effect of the cow dung composting fermentation equipment; then, the stirring effect is determined to obtain the influence of the stirring operation on the fermentation effect of the cow dung. Appropriate stirring can prevent material stratification, ensure that oxygen is fully distributed to each part, and increase the activity of microorganisms, thereby accelerating the fermentation process. By monitoring and evaluating the stirring effect, the stirring frequency can be dynamically adjusted to respond to changes in different fermentation stages and environmental conditions, thereby optimizing the fermentation efficiency, ensuring that the cow dung material can be converted under the most favorable conditions, and further improving the fermentation effect of the cow dung; in summary, based on the above scheme, the stirring frequency of the cow dung material in each fermentation stage can be adaptively adjusted, thereby improving the fermentation effect of the cow dung composting fermentation equipment.

[0055] In addition, in another aspect of the present application, in some embodiments, the present application provides a cow dung composting fermentation device, the cow dung composting fermentation device includes a stirring and regulating unit, Figure 3 , which is a schematic diagram of the structure of a stirring and regulating unit according to some embodiments of the present application, and the stirring and regulating unit includes: a collection module 201, a processing module 202 and an execution module 203, which are described as follows: The collection module 201 in the present application is mainly used to monitor the composting fermentation process of cow dung and collect the volume of cow dung material in the cow dung composting fermentation equipment within a predetermined time period; Processing module 202, in the present application, the processing module 202 is used to determine the stage density of the composting fermentation process of the cow dung material at each fermentation stage, and determine the composting gap of the cow dung material in each fermentation stage according to the stage density of each fermentation stage and the volume of all cow dung materials; It should be noted that the processing module 202 is also used to determine the microbial activity in the composting fermentation according to the composting environment parameters in the cow dung composting fermentation equipment, and to perform regression prediction on the fermentation effect of the cow dung material through the microbial activity and each composting gap to obtain the effective fermentation amount of the cow dung material; In addition, the processing module 202 is also used to determine all composting depth intervals in the cow dung composting fermentation equipment based on the heat conduction effect in the cow dung material, determine the pore gradient of the cow dung material in each composting depth interval according to each composting gap and the stirring frequency of the cow dung material, and then perform trend extrapolation on the stirring gain of the cow dung fermentation effect from all the pore gradients to obtain the stirring effect of the composting fermentation; Execution module 203, in the present application, execution module 203 is mainly used to determine the compost maturity of the cow dung material after composting fermentation according to the effective fermentation amount and the stirring effect, and adaptively adjust the stirring frequency of the cow dung material in each fermentation stage based on the compost maturity.

[0056] The above describes in detail the examples of the cow dung composting fermentation equipment and methods provided by the embodiments of the present application. It can be understood that the corresponding device includes hardware structures and / or software modules corresponding to the execution of each function in order to realize the above functions. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0057] In some embodiments, the present application also provides a computer device, comprising a memory and a processor, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the computer device executes the above-mentioned stirring and adjusting method for cow dung composting fermentation.

[0058] In some embodiments, reference Figure 4 , the dotted line in the figure indicates that the unit or module is optional. The figure is a schematic diagram of the structure of a computer device for implementing a stirring and regulating method for composting cow dung according to an embodiment of the present application. The stirring and regulating method for composting cow dung described in the above embodiment can be Figure 4 The computer device shown in the figure is implemented, and the computer device includes at least one processor 301, a memory 302 and at least one communication unit 305. The computer device can be a terminal device, a server or a chip.

[0059] The processor 301 may be a general-purpose processor or a special-purpose processor. For example, the processor 301 may be a central processing unit (CPU), which may be used to control the computer device, execute software programs, and process data of the software programs. The computer device may also include a communication unit 305 to implement signal input (reception) and output (transmission).

[0060] For example, the computer device may be a chip, the communication unit 305 may be an input and / or output circuit of the chip, or the communication unit 305 may be a communication interface of the chip, and the chip may be a component of a terminal device, a network device, or other devices.

[0061] For another example, the computer device may be a terminal device or a server, and the communication unit 305 may be a transceiver of the terminal device or the server, or the communication unit 305 may be a transceiver circuit of the terminal device or the server.

[0062] The computer device may include one or more memories 302, on which a program 304 is stored. The program 304 can be executed by the processor 301 to generate instructions 303, so that the processor 301 performs the method described in the above method embodiment according to the instructions 303. Optionally, data (such as a target audit model) can also be stored in the memory 302. Optionally, the processor 301 can also read the data stored in the memory 302, and the data can be stored at the same storage address as the program 304, or the data can be stored at a different storage address from the program 304.

[0063] The processor 301 and the memory 302 may be provided separately or integrated together, for example, integrated on a system on chip (SOC) of the terminal device.

[0064] It should be understood that each step of the above method embodiment can be completed by a hardware-based logic circuit or software-based instructions in the processor 301. The processor 301 can be a CPU, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, such as discrete gates, transistor logic devices, or discrete hardware components.

[0065] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0066] For example, in some embodiments, the present application also provides a computer-readable storage medium, in which instructions or codes are stored. When the instructions or codes are executed on a computer, the computer implements the above-mentioned stirring and adjusting method for cow dung composting fermentation.

[0067] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0068] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A stirring and regulating method for cow dung composting fermentation, used for adjusting the stirring frequency of cow dung composting fermentation equipment, characterized in that: The steps include: Monitor the composting and fermentation process of cow dung, and collect the volume of cow dung material in the cow dung composting and fermentation equipment within a predetermined time period; Determine the stage density of the composting fermentation process of the cow dung material at each fermentation stage, and determine the composting gap of the cow dung material in each fermentation stage by the stage density of each fermentation stage and all cow dung material volumes; Determine the microbial activity in the composting fermentation according to the composting environment parameters in the cow dung composting fermentation equipment, and perform regression prediction on the fermentation effect of the cow dung material through the microbial activity and each composting gap to obtain the effective fermentation amount of the cow dung material; Based on the heat conduction effect in the cow dung material, all composting depth intervals in the cow dung composting fermentation equipment are determined, and the pore gradient of the cow dung material in each composting depth interval is determined according to each composting gap and the stirring frequency of the cow dung material, and then the stirring gain of the cow dung fermentation effect is trend extrapolated from all the pore gradients to obtain the stirring effect of the composting fermentation; The compost maturity of the cow dung material after composting and fermentation is determined according to the effective fermentation amount and the stirring effect, and the stirring frequency of the cow dung material in each fermentation stage is adaptively adjusted based on the compost maturity.

2. The method according to claim 1, characterized in that Determining the stage density of the composting fermentation process of cow dung materials at each fermentation stage specifically includes: Obtaining the initial density of the cow dung material; For each fermentation stage, the fermentation level of the cow dung material in the fermentation stage is obtained; The stage density of the cow dung material in the fermentation stage is determined according to the initial density and the fermentation level, and then the stage density of the cow dung material in each fermentation stage is obtained.

3. The method according to claim 1, characterized in that Determining the composting gap of the cow dung material in each fermentation stage by the stage density of each fermentation stage and the volume of all cow dung materials specifically includes: For each fermentation stage, the material volume information of the cow dung material in the fermentation stage is filtered from all cow dung material volumes; Determine the effective density of the cow dung material in the fermentation stage according to the material volume information; The composting gap of the cow dung material in the fermentation stage is determined according to the effective density and the stage density in the fermentation stage, and then the composting gap of the cow dung material in each fermentation stage is obtained.

4. The method according to claim 1, characterized in that The effective fermentation amount of the cow dung material is obtained by regressing and predicting the fermentation effect of the cow dung material through the microbial activity and each composting interval, and specifically includes: For each fermentation stage, determining the microbial compatibility of the cow dung material in the fermentation stage through the microbial activity; Based on the regression model combined with the microbial matching degree and the composting gap of the cow dung material in the fermentation stage, the fermentation completion rate of the cow dung material in the fermentation stage is predicted, and then the fermentation completion rate of the cow dung material in each fermentation stage is obtained; The effective fermentation amount of the cow dung material is determined based on all the fermentation completion rates.

5. The method according to claim 1, characterized in that According to each composting gap and the stirring frequency of the cow dung material, the pore gradient of the cow dung material in each composting depth range is determined, including: For each composting depth interval, the porosity change of the cow dung material in the composting depth interval is predicted according to the stirring frequency of the cow dung material, and the porosity change curve is obtained; Determine the porosity difference value of the cow dung material in each fermentation stage under the composting depth interval through the porosity variation curve and each composting gap; The pore gradient of the cow dung material in the composting depth interval is determined based on all the pore difference values, and then the pore gradient of the cow dung material in each composting depth interval is obtained.

6. The method according to claim 1, characterized in that The trend of the stirring gain of cow dung fermentation effect is extrapolated from all pore gradients, and the stirring effect of compost fermentation is obtained, which specifically includes: Determine the initial fermentation volume of cow dung composting without stirring based on thermodynamic model; Determine the gain coefficient of cow dung fermentation effect according to all pore gradients; Predicting the fermentation amount of the compost after stirring based on the gain coefficient and the initial fermentation amount; The stirring effect of stirring on the fermentation effect of cow dung is determined according to the compost fermentation amount and the initial fermentation amount.

7. The method according to claim 1, characterized in that Based on the heat conduction effect in cow dung materials, all composting depth intervals in the cow dung composting fermentation equipment are determined to include: Determine the depth-temperature curve based on the heat conduction effect in the cow dung material; All composting depth intervals in the cow dung composting fermentation equipment are determined according to the depth-temperature variation curve.

8. A cow dung composting fermentation device, comprising a stirring and regulating unit, characterized in that: The stirring adjustment unit comprises: A collection module is used to monitor the composting and fermentation process of cow dung and collect the volume of cow dung materials in the cow dung composting and fermentation equipment within a predetermined time period; A processing module is used to determine the stage density of the composting fermentation process of the cow dung material at each fermentation stage, and determine the composting gap of the cow dung material in each fermentation stage according to the stage density of each fermentation stage and the volume of all cow dung materials; The processing module is also used to determine the microbial activity in the composting fermentation according to the composting environment parameters in the cow dung composting fermentation equipment, and to perform regression prediction on the fermentation effect of the cow dung material through the microbial activity and each composting gap to obtain the effective fermentation amount of the cow dung material; The processing module is also used to determine all composting depth intervals in the cow dung composting fermentation equipment based on the heat conduction effect in the cow dung material, determine the pore gradient of the cow dung material in each composting depth interval according to each composting gap and the stirring frequency of the cow dung material, and then perform trend extrapolation on the stirring gain of the cow dung fermentation effect from all the pore gradients to obtain the stirring effect of the composting fermentation; The execution module is used to determine the compost maturity of the cow dung material after composting and fermentation according to the effective fermentation amount and the stirring effect, and adaptively adjust the stirring frequency of the cow dung material in each fermentation stage based on the compost maturity.

9. A computer device, characterized in that: The computer device includes a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the computer device executes the stirring and regulating method for cow dung composting fermentation according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions or codes, and when the instructions or codes are executed on a computer, the stirring and regulating method for cow dung composting fermentation according to any one of claims 1 to 7 is implemented by the computer.

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