Black soldier fly breeding environment control system and method thereof

Abstract

The application relates to a black soldier fly breeding environment control system and a method thereof. A breeding material tray stack is carried into a breeding space through a transportation channel, and a fresh air mechanism and a negative pressure fan are started, since the fresh air mechanism and the negative pressure fan are arranged on opposite two side walls of a breeding bin, airflow is promoted to flow from the fresh air mechanism to the negative pressure fan, and the efficiency of waste gas exhaust in the breeding space is improved. The above system forms a directional stable airflow in the breeding space through the synergistic effect of the fresh air mechanism and the negative pressure fan. The unique transportation channel arrangement mode ensures the convenience of breeding operation and avoids the interference of the transportation operation on the stability of the breeding environment; meanwhile, the physical distance between the fresh air mechanism and the breeding space is ensured, which provides a diffusion space for uniform diffusion of fresh air on one hand and reduces the influence of fresh air mechanism noise on the breeding space on the other hand.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of breeding, in particular to a black soldier fly breeding environment control system and method. BACKGROUND

[0002] With the rapid development of insect factory breeding technology, the existing environmental control system generally has the technical bottleneck of low environmental control efficiency. The existing breeding facilities mostly adopt open ventilation design, which is difficult to accurately control the temperature and humidity parameters, especially under high-density breeding conditions, which easily leads to uneven development of larvae. The conventional parallel flow ventilation system has airflow dead angles, causing harmful gases such as ammonia and carbon dioxide to accumulate in local areas, affecting the feeding efficiency and conversion rate of black soldier flies. At the same time, the overlapping design of the material transportation channel and the breeding area not only interferes with the environmental stability, but also increases the risk of pathogen transmission.

[0003] For example, patent CN109937970A discloses a ventilation system for factory high-density breeding, which connects left and right air pipes to a cutting fan to realize airflow circulation in the breeding space. Patent CN113261540B discloses an air environment control system with top air supply and bottom air return, which supplies air from the top of the breeding room and discharges air from the bottom of the breeding room. The above-mentioned patents do not solve the contradiction between transportation operation and environmental control, and the unreasonable equipment layout leads to poor breeding waste gas discharge efficiency in the breeding space. SUMMARY

[0004] Therefore, it is necessary to provide a black soldier fly breeding environment control system and method with more reasonable space layout, which is beneficial to transportation, environmental control and waste gas discharge.

[0005] A black soldier fly breeding environment control system includes a breeding bin, a fresh air mechanism and a negative pressure fan. The breeding bin forms a breeding space inside. The fresh air mechanism is arranged on the breeding bin and located on one side of the breeding space. The fresh air mechanism is arranged separately from the breeding space, and the interval between the fresh air mechanism and the breeding space forms a transportation channel. The negative pressure fan is arranged on the breeding bin and located on the side of the breeding space opposite to the transportation channel. The negative pressure fan and the fresh air mechanism are used to form an airflow in the breeding space from the fresh air mechanism to the negative pressure fan.

[0006] In one embodiment, the fresh air mechanism includes a fresh air fan and an air uniformizing piece. The fresh air fan is arranged on the breeding bin. The air uniformizing piece is arranged at the air outlet of the fresh air fan. The air uniformizing piece forms a plurality of uniformly arranged air uniformizing channels inside. The area of the breeding space facing the air uniformizing piece is greater than or equal to the cross-sectional dimension of the breeding space.

[0007] In one of the embodiments, the black soldier fly breeding environment control system further comprises a wind wall, the wind wall comprises a wind guide channel and a plurality of disturbance fans, the wind guide channel is arranged on the side wall of the breeding space, one end of the wind guide channel is formed with a wind guide opening, the wind guide opening faces the transport channel and communicates with the transport channel, and the plurality of disturbance fans are installed on the side of the wind guide channel facing the breeding space.

[0008] In one of the embodiments, the breeding space is divided into at least three layers in the vertical direction, each layer of the breeding space is divided into at least three independent temperature control areas in the direction from the fresh air mechanism to the negative pressure fan, an environmental monitoring sensor is arranged corresponding to each of the independent temperature control areas, the disturbance fan is electrically connected with the environmental monitoring sensor, and the disturbance fan corresponding to each of the independent temperature control areas is controlled to operate according to the detection result of the environmental monitoring sensor of the area.

[0009] In one of the embodiments, the wind wall is arranged on the opposite two side walls of the breeding space, the disturbance fans of each of the wind walls are arranged in staggered arrangement in two rows from top to bottom, the disturbance fans of the opposite two wind walls are arranged in staggered arrangement, and the horizontal offset of the disturbance fans is 0.3-0.5 times of the diameter of the disturbance fan.

[0010] In one of the embodiments, a rotatable guide vane is arranged in the wind guide channel, and the rotation axis direction of the guide vane is the direction facing the breeding space.

[0011] In one of the embodiments, at least two breeding spaces are formed in the breeding bin, one side of each of the breeding spaces facing the fresh air mechanism communicates with the transport channel, at least one fresh air fan and at least one negative pressure fan are arranged corresponding to each of the breeding spaces, and a wind separation plate is arranged between adjacent two breeding spaces, the wind separation plate is movable into the transport channel to separate the adjacent two breeding spaces.

[0012] In one of the embodiments, an air outlet is arranged on the side wall of the breeding bin opposite to the side wall where the fresh air mechanism is arranged, a gas collecting nozzle is butt-jointed to the side of the air outlet away from the breeding space, the negative pressure fan is installed on the side of the gas collecting nozzle away from the air outlet, and the cross-sectional dimension of the gas collecting nozzle tends to decrease from the air outlet to the negative pressure fan.

[0013] In one of the embodiments, the black soldier fly breeding environment control system further comprises a control air valve, a return air pipe and a deodorization system, the air outlet end of the negative pressure fan, the return air pipe and the deodorization system are respectively connected to the three interfaces of the control air valve, the control air valve is used to control the air volume of the air outlet of the negative pressure fan into the return air pipe and the deodorization system, and the other end of the return air pipe is connected to the air equalizing device.

[0014] The black soldier fly breeding environment control system described above carries the breeding tray stack through the transportation channel into the breeding space, starts the fresh air mechanism and the negative pressure fan, and since the fresh air mechanism and the negative pressure fan are respectively arranged on the opposite two side walls of the breeding bin, the fresh air mechanism is used to provide fresh air to the breeding space in the direction of the negative pressure fan, and the negative pressure fan is used to form negative pressure on the other side of the breeding space to promote the airflow from the fresh air mechanism to the negative pressure fan, thereby improving the efficiency of exhaust gas discharge in the breeding space. The black soldier fly breeding environment control system described above forms a directional and stable airflow in the breeding space through the synergistic effect of the fresh air mechanism and the negative pressure fan. The unique transportation channel arrangement ensures the convenience of breeding operation and avoids the interference of transportation operation on the stability of the breeding environment; at the same time, it ensures the physical distance between the fresh air mechanism and the breeding space, which on the one hand provides diffusion space for the uniform diffusion of fresh air and avoids the concentration of fresh air in the direction of the air outlet opening of the fresh air mechanism, and on the other hand reduces the influence of the noise of the fresh air mechanism on the breeding space.

[0015] A black soldier fly breeding environment control method, the black soldier fly breeding environment control method comprising:

[0016] Step S1: obtaining the current breeding environment parameters and the physiological parameters of the insect body in the breeding space, and constructing an initial environment prediction model of the breeding space according to the current breeding environment parameters and the physiological parameters of the insect body;

[0017] Step S2: predicting the breeding environment change amount according to the initial environment prediction model;

[0018] Step S3: performing difference calculation on the breeding environment change amount and the preset threshold value to obtain an environment deviation amount;

[0019] Step S4: determining the target start-stop number and target position of the disturbance fan of the air wall based on the amplitude interval of the environment deviation amount, and generating a variable frequency control signal of the fresh air fan according to the change gradient of the environment deviation amount;

[0020] Step S5: starting and running the disturbance fan in the air wall corresponding to the target start-stop number and target position in response to the target start-stop number and target position, and adjusting the motor speed of the fresh air fan and the output power of the refrigeration unit according to the variable frequency control signal, so as to control the fresh air flow and temperature entering the breeding space.

[0021] The black soldier fly breeding environment control method reduces the prediction temperature change error rate by predicting temperature change through insect body parameters and environmental parameters. The operation of the air wall and the fresh air fan is regulated through the prediction results to avoid temperature overshoot or lag caused by traditional threshold control, maintain the optimal growth temperature zone of the insect body, realize local airflow optimization through directional disturbance of the air wall, and solve the problem of uneven temperature field caused by traditional single ventilation through the synergistic effect of global temperature and humidity regulation by the fresh air mechanism.

[0022] In one of the embodiments, the step S3 further comprises:

[0023] Generating a return air proportion valve adjustment parameter based on the amplitude interval of the environmental deviation amount;

[0024] Adjusting the opening degree of the return air passage according to the return air proportion valve adjustment parameter.

[0025] In one of the embodiments, the step S1 comprises:

[0026] Obtaining insect body physiological parameters in the breeding space, and establishing an insect body heat production model representing the metabolic heat production rate of the insect body based on the insect body physiological parameters, wherein the insect body heat production model is Q gen =N·f(a)·g(T); wherein N is the number of insect bodies, f(a) is the heat production coefficient of the insect body, and g(T) is a function of temperature on activity;

[0027] Obtaining current breeding environment parameters of the breeding space, and establishing a system heat dissipation model representing the heat exchange characteristics of the breeding system based on the current environmental temperature, wherein the system heat dissipation model is:

[0028] Q loss =hA(T―T env )+ηV; wherein h is a comprehensive heat dissipation coefficient (W / (m 2 ·℃), A is an effective heat dissipation area (m 2 ), T env is the current environmental temperature (℃), T is the current temperature of the insect body (℃), η is a ventilation heat dissipation efficiency (W / m 3 ), and V is a ventilation volume (m 3 / s);

[0029] Coupling calculation of the insect body heat production model and the system heat dissipation model to construct an initial environment prediction model of the breeding space, wherein the initial environment prediction model is:

[0030] wherein Δt is a time step, and C is the total heat capacity of the breeding system (J / ℃).

[0031] In one of the embodiments, the step S2 comprises:

[0032] Acquire environmental monitoring data and insect growth data during the historical breeding cycle, and use a neural network to optimize the parameters of the initial environmental prediction model to generate an optimized breeding environment prediction model.

[0033] The real-time collected aquaculture environment parameters are input into the optimized aquaculture environment prediction model to calculate the predicted value of the change in ambient temperature within a preset time window. Attached Figure Description

[0034] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the various components are shown in the drawings only as examples and not necessarily to actual scale.

[0037] Figure 1 This is a schematic diagram of an environmental control system for black soldier fly farming.

[0038] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0039] Figure 3 for Figure 1 Side view of the air intake duct.

[0040] Figure 4 This is a flowchart of an environmental control method for black soldier fly farming in one embodiment.

[0041] Explanation of reference numerals in the attached figures:

[0042] Black soldier fly farming environmental control system 10; farming bin 100; farming space 110; transport channel 120; fresh air mechanism 200; fresh air fan 210; air distribution unit 220; negative pressure fan 300; air collection nozzle 310; air baffle 400; return air duct 500; pressurizing fan 510; deodorization system 600; air mixing unit 700; air mixing chamber 710; air wall 800; air intake channel 810; disturbance fan 820; air intake outlet 830. Detailed Implementation

[0043] In order to make the above objectives, characteristics and advantages of the present application more apparent, more comprehensible, the specific embodiments of the present application are described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0044] With reference to Figure 1 and Figure 2 , the space layout of the black soldier fly breeding environment control system 10 in an embodiment of the present application is more reasonable, at least beneficial to transportation, environmental control and waste gas exhaust. Specifically, the black soldier fly breeding environment control system 10 includes a breeding bin 100, a fresh air mechanism 200 and a negative pressure fan 300, and a breeding space 110 is formed in the breeding bin 100; the fresh air mechanism 200 is arranged on the breeding bin 100 and located on one side of the breeding space 110, the fresh air mechanism 200 is arranged separately from the breeding space 110, and the interval between the fresh air mechanism 200 and the breeding space 110 is formed as a transportation channel 120; the negative pressure fan 300 is arranged on the breeding bin 100 and located on the side of the breeding space 110 opposite to the transportation channel 120, and the negative pressure fan 300 and the fresh air mechanism 200 are used to form an air flow in the breeding space 110 from the fresh air mechanism 200 to the negative pressure fan 300.

[0045] The breeding material tray stack is carried into the breeding space 110 through the transportation channel 120, and the fresh air mechanism 200 and the negative pressure fan 300 are started. Since the fresh air mechanism 200 and the negative pressure fan 300 are arranged on the opposite two side walls of the breeding bin 100, the fresh air mechanism 200 is used to provide fresh air to the breeding space 110 towards the negative pressure fan 300, and the negative pressure fan 300 is used to form negative pressure on the other side of the breeding space 110 to promote the air flow from the fresh air mechanism 200 to the negative pressure fan 300, thereby improving the efficiency of waste gas exhaust in the breeding space 110. The above-mentioned black soldier fly breeding environment control system 10 forms a directional and stable air flow in the breeding space 110 through the synergistic effect of the fresh air mechanism 200 and the negative pressure fan 300. The unique transportation channel 120 arrangement ensures the convenience of breeding operation and avoids the interference of transportation operation on the stability of the breeding environment; at the same time, it ensures the physical distance between the fresh air mechanism 200 and the breeding space 110, which on the one hand provides diffusion space for uniform diffusion of fresh air and avoids the fresh air being concentrated in the direction of the air outlet opening of the fresh air mechanism 200, and on the other hand reduces the influence of the noise of the fresh air mechanism 200 on the breeding space 110.

[0046] In an embodiment, the fresh air mechanism 200 comprises a fresh air fan 210 and an air uniformizing member 220. The fresh air fan 210 is arranged on the breeding bin 100, and the air uniformizing member 220 is arranged at the air outlet of the fresh air fan 210. The air uniformizing member 220 is internally formed with a plurality of uniformly arranged air uniformizing channels, and the area of the breeding space 110 facing the air uniformizing member 220 is greater than or equal to the cross-sectional dimension of the breeding space 110. For example, in the embodiment, the air uniformizing member 220 is a grating plate, and the grating spaces on the grating plate are formed as the air uniformizing channels. The fresh air fan 210 passes through the air uniformizing member 220 so as to blow more uniformly to the breeding space 110, avoiding the concentration of fresh air.

[0047] In an embodiment, the breeding bin 100 is internally formed with at least two breeding spaces 110. Each breeding space 110 is in communication with the transport channel 120 at the side facing the fresh air mechanism 200. Each breeding space 110 is correspondingly provided with at least one fresh air fan 210 and at least one negative pressure fan 300. The air isolation plate 400 is arranged between the adjacent two breeding spaces 110 and is movable into the transport channel 120 to separate the adjacent two breeding spaces 110. The breeding trays can be transported into any breeding space 110 through the transport channel 120. When the breeding spaces 110 breed different age groups of black soldier flies or breed the same age group of black soldier flies in different environments, the air isolation plate 400 can be driven to separate the adjacent two breeding spaces 110. Since each breeding space 110 is correspondingly provided with the fresh air fan 210 and the negative pressure fan 300, the environment of the breeding space 110 can be controlled through the fresh air fan 210 opposite to the breeding space 110.

[0048] Specifically, the breeding spaces 110 are provided with a telescopic driving member (not shown in the figure), which is used to drive the air isolation plate 400 to move towards or away from the transport channel 120. For example, the telescopic driving member can be a pneumatic cylinder, and of course, it can be an electric push rod or other driving structures.

[0049] In an embodiment, the side wall of the breeding bin 100 opposite to the fresh air mechanism 200 is provided with an air outlet. The air outlet is butt-jointed with the gas collecting nozzle 310 at the side opposite to the breeding space 110. The negative pressure fan 300 is installed on the side of the gas collecting nozzle 310 opposite to the air outlet. The cross-sectional dimension of the gas collecting nozzle 310 tends to decrease from the air outlet to the negative pressure fan 300. The arrangement of the gas collecting nozzle 310 is more conducive to forming negative pressure on the side of the air outlet of the breeding space 110, improving the power of airflow circulation. At the same time, the gas collecting nozzle 310 allows the negative pressure fan 300 to be arranged at a distance from the breeding space 110, reducing the influence of the noise generated by the negative pressure fan 300 on the breeding space 110, and ensuring the stable growth of the black soldier flies in the breeding space 110.

[0050] In the embodiment, the black soldier fly breeding environment control system 10 further comprises a control air valve, an air return pipe 500 and a deodorization system 600, the air outlet end of the negative pressure fan 300, the air return pipe 500 and the deodorization system 600 are respectively connected to the three interfaces of the control air valve, the control air valve is used for controlling the air volume of the air outlet of the negative pressure fan 300 into the air return pipe 500 and the deodorization system 600, and the other end of the air return pipe 500 is connected to the air equalizing member 220. By arranging the air return pipe 500, the exhaust air can be returned to the fresh air mechanism 200 as needed, the required fresh air volume and water vapor can be saved under the premise of ensuring the air exchange volume and the temperature and humidity, and the energy consumption of the system can be reduced. The control air valve can control the air return volume, so as to facilitate reliable adjustment of the environment of the breeding space 110. Further, the air return pipe 500 is provided with a pressurized fan 510 for increasing the air pressure of the air blowing air equalizing member 220.

[0051] In an embodiment, the black soldier fly breeding environment control system 10 further comprises a mixed air member 700, the mixed air member 700 is provided with a mixed air cavity 710, a plurality of negative pressure fans 300 are arranged corresponding to each breeding control, the air outlet end of each negative pressure fan 300 is connected to the mixed air cavity 710, and a control air valve is arranged on the mixed air member 700 and used for distributing the air flow in the mixed air cavity 710 to the air return pipe 500 and the deodorization system 600. By arranging the mixed air member 700 to mix the exhaust gas discharged from each breeding space 110, only one control air valve, one air return pipe 500 and one deodorization system 600 are required.

[0052] In combination with Figure 3 In an embodiment, the black soldier fly breeding environment control system 10 further comprises a wind wall 800, the wind wall 800 comprises an air guide channel 810 and a plurality of air disturbance fans 820, the air guide channel 810 is arranged on the side wall of the breeding space 110, one end of the air guide channel 810 is provided with an air guide opening 830, the air guide opening 830 faces the transport channel 120 and is connected to the transport channel 120, and the air disturbance fans 820 are installed on the side of the air guide channel 810 facing the breeding space 110. By arranging the wind wall 800, the interlayer air disturbance flow can be formed, the fresh air can flow above each breeding tray, the problem of too high or too low temperature and humidity in the local breeding space 110 can be reduced, and the air exchange efficiency in the breeding space 110 can be improved. Since the air guide opening 830 faces the transport channel 120 and the air guide channel 810 is arranged on the side wall of the breeding space 110, when the air disturbance fan 820 is started, the fresh air of the fresh air mechanism 200 can flow in the direction of the side wall, and the possibility of the fresh air concentrating in the middle part can be reduced.

[0053] Specifically, the wind walls 800 are arranged on the opposite side walls of the breeding space 110, and the fresh air fan 210 is arranged at a position facing the middle of the breeding space 110 or a position close to the middle. In other embodiments, the fresh air fan 210 can also be arranged at other positions.

[0054] In an embodiment, the wind walls 800 are arranged on opposite sides of the breeding space 110, and the disturbance fans 820 of each wind wall 800 are arranged in staggered rows in the up-down direction, and the disturbance fans 820 of the opposite two wind walls 800 are arranged in staggered rows. Specifically, the horizontal offset of the disturbance fans 820 is 0.3-0.5 times the diameter of the disturbance fans 820. By arranging the disturbance fans 820 in staggered rows, the temperature stratification phenomenon in the vertical direction can be effectively eliminated, and the temperature difference between the upper and lower layers can be reduced; at the same time, the standing wave effect generated by the traditional symmetrical layout can be eliminated, and the area of the local eddy current region can be reduced. The staggered arrangement enables the disturbance fan 820 group to form a complementary pressure field, which can further promote the ventilation efficiency and increase the ventilation frequency.

[0055] In an embodiment, the breeding space 110 is divided into at least three layers in the vertical direction, and each layer of the breeding space 110 is divided into at least three independent temperature control areas in the direction from the fresh air mechanism 200 to the negative pressure fan 300, and each independent temperature control area is provided with an environment monitoring sensor, and the disturbance fan 820 is electrically connected with the environment monitoring sensor, and the disturbance fan 820 corresponding to each independent temperature control area is controlled to operate according to the detection result of the environment monitoring sensor of the area. Through the three-dimensional partition environment monitoring of vertical stratification and horizontal segmentation, the intelligent linkage mechanism of the disturbance fan 820 and the sensor, in one case, the differentiated environmental requirements of the black soldier flies in different growth stages can be realized, and in another case, the local airflow intensity can be dynamically adjusted according to the real-time environmental data, the temperature and humidity gradient difference of the breeding space 110 can be reduced, the gradient difference of environmental oxygen and other gases can be reduced, and the overall uniformity can be improved. In other embodiments, the independent temperature control areas can be divided according to the size of the breeding space 110.

[0056] As shown in Figure 3 Specifically, the air guide channel 810 is provided with a rotatable flow guide vane 840, and the rotation axis direction of the flow guide vane 840 is the direction towards the breeding space 110. By arranging the flow guide vane 840, the amount of airflow flowing to the upper, middle or lower part of the breeding space 110 can be guided, and the airflow in the temperature and humidity uneven area can be further strengthened. For example, in the present embodiment, the flow guide vane 840 is arranged at the layer position in cooperation with the stratification of the breeding space 110. In other embodiments, the flow guide vane 840 can also be arranged in other numbers and is not limited to be arranged at the layer position, as long as it can guide the airflow to flow more to the temperature and humidity uneven area.

[0057] In an embodiment, the air inlets are formed on the front and back walls of the breeding trays, and the air inlets are arranged in a manner corresponding to the arrangement of the breeding tray array to form an interlayer air duct to guide the vertical flow of the fresh air from the fresh air mechanism 200 to the negative pressure fan 300. In another embodiment, the air inlets are formed on the four walls of the breeding tray, and when the disturbance fan 820 of the air wall 800 is started, the horizontal air flow can be effectively formed. Specifically, the air inlets on the left and right sides of the breeding tray are shallow, and the air inlets on the front and back sides are deep, to ensure the stable and reliable circulation of the vertical air flow. In still another embodiment, a groove can be arranged at the bottom of the breeding tray to form a vertical air duct and / or a horizontal air duct.

[0058] In the present embodiment, the disturbance fan 820 of the air wall 800 can form an interlayer disturbance air flow above the breeding tray to enable the fresh air to flow above each breeding tray. When deployed, the air outlet of the disturbance fan 820 can be arranged opposite the air inlet of the side wall of the breeding tray.

[0059] In an embodiment, the environmental monitoring sensor includes a temperature sensor, and the temperature sensor is arranged in each independent temperature control area to detect the temperature of the corresponding independent temperature control area. Specifically, the environmental monitoring sensor further includes a humidity sensor arranged in the breeding space 110 to detect the humidity of the environment in the breeding space 110. For example, a humidity sensor can be arranged in each independent temperature control area.

[0060] In an embodiment, the black soldier fly breeding environmental control system 10 further includes a wind speed sensor arranged on the air outlet side of the fresh air fan 210 and the air inlet side of the negative pressure fan 300 to evaluate the ventilation of the breeding space 110. Specifically, a wind speed sensor can also be arranged on the air outlet side of the disturbance fan 820 corresponding to each independent temperature control area to detect the working state of the disturbance fan 820.

[0061] In an embodiment, a worm temperature sensor is arranged in the breeding space 110, for example, the worm temperature sensor includes a non-contact temperature sensor such as an infrared thermal imaging sensor to measure the surface temperature of the worm and inversely deduce the metabolic heat production. In other embodiments, the worm temperature sensor can also include a contact temperature sensor such as a contact thermistor temperature sensor to directly detect the temperature of the worm by being inserted into the breeding tray.

[0062] The above black soldier fly breeding environmental control system 10 collects worm data and environmental data at key points to build a multi-source perception system to dynamically perceive the changes of the breeding environment and dynamically control the environment in the breeding space 110.

[0063] In the above description of the present application, it should be understood that if the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0064] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connection", "connection", "fixing" and the like appear, these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0065] Referring to Figure 1 , Figure 2 and Figure 4 , in an embodiment, the present application also describes a black soldier fly breeding environmental control method, which can be applied to the black soldier fly breeding environmental control system 10 in any one of the above embodiments. Specifically, the black soldier fly breeding environmental control method comprises:

[0066] Step S1: obtaining the current breeding environment parameters of the breeding space 110 and the physiological parameters of the insect body, and constructing an initial environment prediction model of the breeding space 110 according to the current breeding environment parameters and the physiological parameters of the insect body. For example, the current breeding environment parameters at least include the environmental temperature, and the physiological parameters of the insect body include the insect age, the activity and the number of insect groups. In other embodiments, the current breeding environment parameters can also include carbon dioxide concentration parameters, humidity parameters, etc.

[0067] Specifically, step S1 comprises:

[0068] Step S11: obtaining the physiological parameters of the insect body in the breeding space 110, and establishing an insect body heat production model representing the metabolic heat production rate of the insect body based on the physiological parameters of the insect body, wherein the insect body heat production model is: Q gen =N·f(a)·g(T); wherein N is the number of insect bodies; f(a) is the insect age heat production coefficient; g(T) is the temperature influence function on activity;

[0069] In the embodiment, the insect age heat production coefficient wherein a is the insect age, T0 is the optimum temperature of activity, T is the current temperature of the insect body, k1, k2, k3 are adjustment coefficients related to the insect age. For example, in the larva stage: f(a) = 0.12·e 0.15a .

[0070] Step S12: Obtain the current breeding environment parameters of the breeding space 110, and establish a system heat dissipation model representing the heat exchange characteristics of the breeding system based on the current environment temperature, wherein the system heat dissipation model is:

[0071] Q loss = hA(T―T env )+ηV; wherein h is a comprehensive heat dissipation coefficient (W / (m 2 ·℃), A is an effective heat dissipation area (m 2 ), T env is the current environment temperature (℃), T is the current temperature of the insect body (℃), η is the ventilation heat dissipation efficiency (W / m 3 ), and V is the ventilation volume (m 3 / s);

[0072] Step S13: Coupling calculation of the insect heat production model and the system heat dissipation model to construct an initial environment prediction model of the breeding space 110, wherein the initial environment prediction model is:

[0073] T t+1 = T t +ΔT phys ,

[0074]

[0075] wherein ΔT phys is the theoretical temperature change, T t is the environment temperature at time t, T t+1 is the predicted environment temperature at time t+1, Δt is the time step, and C is the total heat capacity of the breeding system (J / ℃).

[0076] The above model is built by separating the insect heat production and system heat dissipation two physical processes, which improves the interpretability and parameter adjustability of the model.

[0077] Step S2: Predict the breeding environment change amount according to the initial environment prediction model.

[0078] Specifically, step S2 includes:

[0079] Step S21: Obtain the environment monitoring data and insect growth data in the historical breeding period, and optimize the parameters of the initial environment prediction model by using a neural network to generate an optimized breeding environment prediction model;

[0080] In the embodiment, step S211: a neural network is used to determine a data-driven correction term:

[0081] f NN (T t , Q gen , V, Weather, ΔT phys ),

[0082] Specifically, ∈ pred = f NN (T t , Q gen , V, Weather, ΔT phys ), wherein ∈ true =T true -T t+1 , and the objective of the neural network is to learn the mapping relationship of ∈ true by inputting features, to generate an optimized aquaculture environment prediction model: T t+1 =T t + ΔT phys + f NN (T t , Q gen , V, Weather, ΔT phys ); wherein α and β are learnable parameters, and T true is the true environment temperature at t+1 detected. In the embodiment, the neural network uses a fully connected layer or an LSTM to establish the correction term f NN .

[0083] S212: Construct a hybrid loss function:

[0084]

[0085] wherein ω1=ω2=0.1 are penalty coefficients; is the initial heat dissipation coefficient.

[0086] Step S213: Train the data-driven correction term by using a historical data set. Specifically, step 1: forward propagation; step 2: backward propagation; and step 3: learning rate scheduling.

[0087] Step S22: input the real-time collected aquaculture environment parameters into the optimized aquaculture environment prediction model, and calculate the environment temperature change prediction value within a preset time window. By dynamically correcting the model parameters through machine learning, the accuracy of long-period prediction is improved.

[0088] Specifically, when the initial environment prediction model is accurate, f NN ≈0; and when the environment mutates, |f NN | increases to compensate for the model deviation.

[0089] Step S3: difference calculation is performed between the farming environment change amount and a preset threshold value to obtain an environment deviation amount. Specifically, taking temperature prediction as an example, an environment temperature change amount prediction value is predicted according to the initial environment prediction model; difference calculation is performed between the environment temperature change amount prediction value and a preset temperature threshold value to obtain a temperature deviation amount;

[0090] Step S4: based on the amplitude interval of the environment deviation amount, the target start-stop number and target position of the disturbance fan 820 of the wind wall 800 are determined, and a variable frequency control signal of the fresh air fan 210 is generated according to the change gradient of the environment deviation amount. This step realizes differentiated control under different deviation degrees by establishing a hierarchical control strategy. Specifically, based on the amplitude interval of the temperature deviation amount, the regulation and control instructions of the wind wall 800 and the fresh air fan 210 are determined. For example, when the temperature change rate exceeds 1℃ / min, the emergency cooling mode of the fresh air fan 210 is triggered.

[0091] Step S5: the disturbance fan 820 in the wind wall 800 corresponding to the target start-stop number and target position is controlled to start running in response to the target start-stop number and target position, and the motor speed and refrigeration unit output power of the fresh air fan 210 are adjusted according to the variable frequency control signal, so as to control the fresh air flow and temperature sent into the farming space 110. Through the linkage control of the wind wall 800 disturbance and the fresh air system, the dynamic balance of the environment parameters is realized.

[0092] In another embodiment, the step S3 further includes:

[0093] Based on the amplitude interval of the environment deviation amount, a return air proportional valve adjustment parameter is generated;

[0094] The opening degree of the return air channel is adjusted according to the return air proportional valve adjustment parameter.

[0095] In an embodiment, as known from the above, the farming space 110 is divided into different independent temperature control regions, and the initial environment prediction model or the farming environment prediction model can be executed in each independent temperature control region. Specifically, step S4 includes:

[0096] Based on the distribution characteristics of the temperature deviation amount, subarea regulation and control is performed, specifically:

[0097] (1) the farming space 110 is divided into multiple independent monitoring areas, and the temperature prediction deviation amount of each area and the overall temperature comprehensive deviation amount are obtained;

[0098] (2) if the temperature prediction deviation amount of a single monitoring area exceeds a first threshold value, the disturbance fan 820 group of the wind wall 800 corresponding to the area is activated, and the disturbance fans 820 of the remaining areas are kept in a closed state;

[0099] (3) If the temperature prediction deviation of two adjacent monitoring areas exceeds the second threshold value, the corresponding disturbance fan 820 of the adjacent area is started synchronously, and an inter-area air flow compensation instruction is generated to adjust the fan speed difference;

[0100] (4) When the overall temperature comprehensive deviation exceeds the third threshold value, the control mode is selected according to the deviation direction:

[0101] If the overall temperature is positively deviated, the speed of the fresh air fan 210 is increased and the return air proportional valve opening is reduced to strengthen the introduction of external cold source;

[0102] If the overall temperature is negatively deviated, the speed of the fresh air fan 210 is reduced and the return air proportional valve opening is increased to suppress the exchange of external air flow.

[0103] Further, according to the regulation instruction of step S4, priority control is performed:

[0104] (1) The disturbance fan 820 start-stop operation is preferentially responded to the single or adjacent area temperature deviation;

[0105] (2) When there is no regional temperature deviation, the dynamic adjustment of the fresh air fan 210 and the return air proportional valve based on the overall temperature comprehensive deviation is performed to make the mixing parameters of the fresh air flow and the return air temperature match the preset environment curve.

[0106] The traditional environment regulation system lacks a dynamic coupling model of metabolic heat production and ventilation heat dissipation, and cannot adaptively adjust the temperature and humidity gradient according to the instar stage, resulting in increased energy consumption and significant differences in insect body specifications. The black soldier fly breeding environmental control method of the present application couples the insect body heat production model and the system heat dissipation model to accurately quantify the interaction between biological metabolism and environmental heat exchange, reducing the prediction temperature change error rate. The prediction and control process dynamically correlates the growth parameters such as instar and quantity with the environmental model parameters, achieving automatic adaptation from the larval stage (low heat production) to the adult stage (high heat production) throughout the cycle.

[0107] The operation of the air wall 800 and the fresh air fan 210 and the control of the return air volume are regulated by the prediction results, avoiding the temperature overshoot or lag problem caused by traditional threshold control, maintaining the optimal growth temperature zone of the insect body; and the directional disturbance of the air wall 800 realizes local air flow optimization, and the cooperation of the fresh air structure 200 and the return air control realizes global temperature and humidity regulation, solving the problem of uneven temperature field caused by traditional single ventilation. The present application constructs a closed-loop control system covering breeding preparation-environment regulation-intelligent sorting, realizes modeling according to insect metabolic heat distribution, multi-area differentiated environmental control, and achieves real-time decision-making method based on insect growth state.

[0108] Meanwhile, the black soldier fly breeding environment control method trains the prediction model to have fault tolerance of environmental mutation through historical data of the neural network, and when the sensor is abnormal, the prediction model can output a replacement value to maintain basic control and avoid system paralysis.

[0109] It should be understood that, although Figure 4 The steps in the flowchart of the method can be displayed in sequence according to the arrows, but these steps are not necessarily executed in sequence according to the arrows. Unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other sequences. Moreover, Figure 4 At least part of the steps in the method can include multiple steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence of these steps or stages is not necessarily sequential, but can be executed in rotation or alternation with at least part of other steps or steps or stages in other steps.

[0110] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0111] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A black soldier fly farming environment control system, characterized in that, The black soldier fly breeding environment control system comprises: a breeding bin, a breeding space is formed in the breeding bin; a fresh air mechanism, the fresh air mechanism is arranged on the breeding bin and located at one end of the breeding space, the fresh air mechanism is arranged separately from the breeding space, and the interval between the fresh air mechanism and the breeding space is formed as a transport channel; a negative pressure fan, the negative pressure fan is arranged on the breeding bin and located at one end of the breeding space away from the transport channel, the negative pressure fan and the fresh air mechanism are used for forming an air flow in the breeding space from the fresh air mechanism to the negative pressure fan; and a wind wall, the wind walls are arranged on the opposite two side walls of the breeding space, the wind wall comprises an air guide channel and a plurality of disturbance fans, the air guide channel is arranged on the side wall of the breeding space, one end of the air guide channel is formed with an air guide opening, the air guide opening faces the transport channel and communicates with the transport channel, and the plurality of disturbance fans are installed on the side of the air guide channel facing the breeding space.

2. The black soldier fly farming controlled environment system of claim 1, wherein, The fresh air mechanism comprises a fresh air fan and an air uniformizing piece, the fresh air fan is arranged on the breeding bin, the air uniformizing piece is arranged at the air outlet of the fresh air fan, a plurality of uniformly arranged air uniformizing channels are formed in the air uniformizing piece, and the area of the breeding space facing the air uniformizing piece is greater than or equal to the cross-sectional dimension of the breeding space.

3. The black soldier fly rearing controlled environment system of claim 2, wherein, The breeding space is divided into at least three layers in the vertical direction, each layer of the breeding space is divided into at least three independent temperature control areas in the direction from the fresh air mechanism to the negative pressure fan, an environment monitoring sensor is arranged corresponding to each independent temperature control area, the disturbance fan is electrically connected with the environment monitoring sensor, and the disturbance fan corresponding to each independent temperature control area controls operation according to the detection result of the environment monitoring sensor of the area.

4. The black soldier fly rearing controlled environment system of claim 3, wherein, The wind walls are arranged on the opposite two side walls of the breeding space, the disturbance fans of each wind wall are arranged in staggered arrangement in two rows from top to bottom, the disturbance fans of the opposite two wind walls are arranged in staggered arrangement, and the horizontal offset of the disturbance fans is 0.3-0.5 times the diameter of the disturbance fan; and / or A rotatable guide vane is arranged in the air guide channel, and the rotation axis direction of the guide vane is the direction facing the breeding space.

5. The black soldier fly farming controlled environment system of any one of claims 2-4, wherein, At least two breeding spaces are formed in the breeding bin, one side of each breeding space facing the fresh air mechanism communicates with the transport channel, at least one fresh air fan and at least one negative pressure fan are arranged corresponding to each breeding space, and a wind separation plate is arranged between adjacent two breeding spaces, the wind separation plate can be moved into the transport channel to separate adjacent two breeding spaces; and / or An air outlet is arranged on the side wall of the breeding bin opposite to the fresh air mechanism, a gas collecting nozzle is arranged on the side of the air outlet away from the breeding space, the negative pressure fan is installed on the side of the gas collecting nozzle away from the air outlet, and the cross-sectional dimension of the gas collecting nozzle tends to decrease from the air outlet to the negative pressure fan; and / or The black soldier fly breeding environment control system further comprises a control air valve, a return air pipe and a deodorization system, the air outlet end of the negative pressure fan, the return air pipe and the deodorization system are respectively connected to three interfaces of the control air valve, the control air valve is used to control the air volume of the air outlet of the negative pressure fan entering the return air pipe and the deodorization system, and the other end of the return air pipe is connected to the air equalizing device.

6. The black soldier fly farming controlled environment system of claim 2, wherein, The black soldier fly breeding environment control system further comprises a wind speed sensor, and wind speed sensors are arranged on the air outlet side of the fresh air fan and the air inlet side of the negative pressure fan, and the wind speed sensors are used to evaluate the ventilation condition of the breeding space. The breeding space is further provided with a worm body temperature sensor, and the worm body temperature sensor is used to collect worm body data.

7. A method for controlling the environment of black soldier fly breeding, applied in the black soldier fly breeding environment control system according to any one of claims 1-6, characterized in that, The black soldier fly breeding environment control method comprises: Step S1: acquiring current breeding environment parameters and worm physiological parameters of a breeding space, and constructing an initial environment prediction model of the breeding space according to the current breeding environment parameters and the worm physiological parameters; Step S2: predicting a breeding environment change amount according to the initial environment prediction model; Step S3: performing difference calculation on the breeding environment change amount and a preset threshold value to obtain an environment deviation amount; Step S4: determining a target start-stop number and a target position of the disturbance fan of the air wall based on the amplitude interval of the environment deviation amount, and generating a variable frequency control signal of the fresh air fan according to the change gradient of the environment deviation amount; Step S5: starting and operating the disturbance fan in the air wall in the target start-stop number and the target position in response to the target start-stop number and the target position, and adjusting the motor speed of the fresh air fan and the output power of the refrigeration unit according to the variable frequency control signal, so as to control the fresh air flow and temperature sent into the breeding space.

8. The black soldier fly farming environmental control method according to claim 7, wherein, The step S3 further comprises: generating a return air proportional valve adjustment parameter based on the amplitude interval of the environment deviation amount; adjusting the opening degree of the return air channel according to the return air proportional valve adjustment parameter.

9. The black soldier fly farming environmental control method of claim 7, wherein, The step S1 comprises: Obtaining physiological parameters of the insect in the breeding space, and establishing an insect heat production model representing a metabolic heat production rate of the insect based on the physiological parameters of the insect, the insect heat production model being: ; wherein N is the number of insects; is a heat production coefficient of the insect at the insect age; is a temperature influence function on the activity. acquiring current breeding environment parameters of a breeding space, establishing a system heat dissipation model representing the heat exchange characteristics of the breeding system based on the current environment temperature, and the system heat dissipation model is: ; wherein, h is the overall heat dissipation coefficient (W / (m 2 ℃), A is the effective heat dissipation area (m 2 ), T env is the current ambient temperature (℃), T is the current temperature of the insect (℃), η is the ventilation heat dissipation efficiency (W / m 3 ), V is the ventilation volume (m 3 / s); coupling calculation of the worm heat production model and the system heat dissipation model to construct an initial environment prediction model of the breeding space, and the initial environment prediction model is: where ΔT is the temperature difference between the water and the air, Δt is the time step, and C is the total heat capacity of the system (J / °C). t where ΔT is the temperature difference between the water and the air, Δt is the time 10. The black soldier fly breeding and environmental control method according to any one of claims 7-9, characterized in that, The step S2 comprises: acquiring environmental monitoring data and worm growth data in a historical breeding period, performing parameter optimization on the initial environment prediction model by using a neural network to generate an optimized breeding environment prediction model; inputting the real-time collected breeding environment parameters into the optimized breeding environment prediction model to calculate the environmental temperature change amount prediction value in a preset time window.

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