Control method and device for independent ventilation cage, independent ventilation cage, and computer-readable storage medium
By obtaining the number of air changes per unit time and the air volume leakage rate of the independently ventilated cages, the air velocity was adjusted to optimize the air velocity, thus solving the air volume leakage problem, ensuring the air volume requirements, creating a clean breeding environment, and protecting the health and safety of the experimental animals.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- QINGDAO HAIER BIOMEDICAL CO LTD
- Filing Date
- 2024-04-02
- Publication Date
- 2026-07-31
AI Technical Summary
Existing independent ventilation cages have air leakage problems during use, resulting in a mismatch between the actual air exchange volume and the theoretical air exchange volume, which affects the health and safety of laboratory animals.
By obtaining the number of air changes per unit time and the air volume leakage rate of the independent ventilation cage, the wind speed is adjusted to optimize the wind speed, thereby compensating for the theoretical air change volume and ensuring that the air volume requirements are met without changing the number of air changes per unit time.
Without changing the number of air exchanges per unit time, optimize the wind speed to compensate for the air volume, create a clean breeding environment, and ensure the health and safety of laboratory animals.
Smart Images
Figure CN118216443B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of animal husbandry equipment technology, such as a control method, device, and computer-readable storage medium for independently ventilated cages. Background Technology
[0002] Currently, independently ventilated cages refer to housing and experimental equipment for SPF (Specific Pathogen Free) laboratory animals, which are operated and housed in a clean bench within a closed, independent unit, supplying clean air and centrally discharging exhaust gases. Their working principle utilizes isolator-based closed-loop purification and ventilation technology, minimizing each housing unit and connecting them with inlet and outlet ducts to form a unified unit. This completes isolation between units, minimizing cross-contamination during rearing and maximizing clean air utilization efficiency. Simultaneously, the aseptic experimental techniques and methods employed in a clean bench allow for sterile procedures such as bedding changes, water addition, and feed addition, achieving a microenvironment purification barrier and aseptic operation. Regular ventilation is required in the independently ventilated cages to supply clean air, providing the necessary oxygen to the laboratory animals, and to remove harmful gases such as carbon dioxide and ammonia generated within the cages. To address this, a method for detecting the air exchange rate of an independently ventilated cage has been proposed, comprising: connecting the small-diameter end of the hollow frustum-shaped enclosure structure to the air inlet inside the independently ventilated cage; measuring the wind speed at the large-diameter end of the enclosure structure; measuring the inlet air temperature; and calculating the air exchange rate of the independently ventilated cage based on the measured wind speed using a formula.
[0003] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art: The relevant technology can accurately reflect the precise number of air changes in an independently ventilated cage. However, it does not take into account the issue of air leakage. In scenarios where independently ventilated cages are used, gas leakage may occur at the cage lid, causing a mismatch between the actual and theoretical air exchange volume, which in turn affects the health and safety of laboratory animals.
[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention
[0005] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.
[0006] This disclosure provides a control method, device, and computer-readable storage medium for independently ventilated cages, which can meet air volume requirements without changing the number of air changes per unit time, thus helping to create a clean breeding environment and ensuring the health and safety of laboratory animals.
[0007] In some embodiments, the method includes: obtaining the number of air changes per unit time of the independently ventilated cage; obtaining the air volume leakage rate of the independently ventilated cage; and adjusting the air velocity of the independently ventilated cage according to the number of air changes per unit time and the air volume leakage rate of the independently ventilated cage.
[0008] In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to execute the control method for independently ventilated cages described above when the program instructions are executed.
[0009] In some embodiments, the product includes: a cage frame; cage boxes disposed on the cage frame, wherein there are multiple cage boxes; an air duct connected to the cage box and configured to ventilate the cage box; a fan disposed on the air duct and configured to regulate the air speed; and the aforementioned control device for independently ventilated cages electrically connected to the fan.
[0010] In some embodiments, the computer-readable storage medium stores program instructions that, when executed, cause a computer to perform the control method described above for an independently ventilated cage.
[0011] The control method, apparatus, independent ventilation cage, and computer-readable storage medium provided in this disclosure can achieve the following technical effects: In this embodiment, considering the actual airflow leakage problem during the use of independently ventilated cages, the airflow velocity of the cages can be optimized by obtaining the air exchange rate and airflow leakage rate per unit time. By continuously ventilating according to this optimized airflow velocity, this embodiment can compensate for the theoretical airflow of the independently ventilated cages, meeting the airflow requirements without changing the air exchange rate per unit time. This is beneficial for creating a clean breeding environment and ensuring the health and safety of experimental animals.
[0012] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description
[0013] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein: Figure 1This is a schematic diagram of the structure of an independent ventilation cage provided in an embodiment of this disclosure; Figure 2 This is a schematic diagram of a control method for an independently ventilated cage provided in an embodiment of this disclosure; Figure 3 This is a schematic diagram of another control method for an independently ventilated cage provided in an embodiment of this disclosure; Figure 4 This is a schematic diagram of another control method for an independently ventilated cage provided in an embodiment of this disclosure; Figure 5 This is a schematic diagram of another control method for an independently ventilated cage provided in an embodiment of this disclosure; Figure 6 This is a schematic diagram of a control device for an independently ventilated cage provided in an embodiment of this disclosure.
[0014] Figure label: 100: Cage frame; 200: Cage box; 300: Air duct; 400: Control device for independently ventilated cages; 401: Processor; 402: Memory; 403: Communication interface; 404: Bus. Detailed Implementation
[0015] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.
[0016] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.
[0017] Unless otherwise stated, the term "multiple" means two or more.
[0018] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.
[0019] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.
[0020] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.
[0021] Combination Figure 1 As shown, this embodiment of the disclosure provides an independent ventilation cage, including: a cage frame 100, a cage box 200, and an air duct 300. The cage boxes 200 are disposed on the cage frame 100, and there are multiple cage boxes 200. The air duct 300 is connected to the cage box 200 and is configured to ventilate the cage box 200.
[0022] The independent ventilation cage provided in this embodiment can ventilate the cage 200 through the air duct 300, thereby supplying clean air into the cage 200, providing the necessary oxygen to the experimental animals, and expelling harmful gases such as carbon dioxide and ammonia generated in the cage 200, which helps to create a clean breeding environment and ensure the health and safety of the experimental animals.
[0023] Optionally, the independent ventilation cage also includes a fan, which is installed in the duct 300. Specifically, the fan is located at the air inlet of the duct 300 and is configured to regulate the airflow speed of the independent ventilation cage. In this way, by controlling the fan speed, the airflow speed of the independent ventilation cage can be adjusted to compensate for the theoretical air exchange volume of the independent ventilation cage, thereby meeting the airflow requirements without changing the number of air exchanges per unit time.
[0024] Optionally, the independent ventilation cage also includes a control device 400 for the independent ventilation cage, which is electrically connected to the fan. Thus, embodiments of this disclosure can use the control device 400 to execute corresponding control methods to optimize the wind speed of the independent ventilation cage, thereby meeting the airflow requirements without changing the number of air changes per unit time.
[0025] Based on the aforementioned independent ventilation cage, combined with Figure 2 As shown, this disclosure provides a control method for an independently ventilated cage, including: S101, the control device obtains the number of air changes per unit time of the independent ventilation cage.
[0026] S102, the control device obtains the air volume leakage rate of the independent ventilation cage.
[0027] S103, the control device adjusts the air speed of the independent ventilation cage according to the number of air changes per unit time and the air volume leakage rate of the independent ventilation cage.
[0028] The control method for independently ventilated cages provided in this disclosure addresses the issue of air leakage during cage use. By acquiring the air exchange rate and air leakage rate of the independently ventilated cages, the air velocity can be optimized. Continuous ventilation at this optimized air velocity compensates for the theoretical air exchange volume of the independently ventilated cages, meeting air volume requirements without changing the air exchange rate per unit time. This helps create a clean rearing environment and ensures the health and safety of laboratory animals.
[0029] Optionally, the control device adjusts the air velocity of the independently ventilated cage based on the number of air changes per unit time and the air volume leakage rate, including: the control device adjusting the air velocity based on Q. a =ACH*N*V0, obtain the target ventilation volume Q of the independent ventilation cage. a The control device is based on Q. b =r*N*V0, to obtain the compensated ventilation volume Q of the independent ventilation cage. b The control device is based on S*v=Q a +Q b The target wind speed v of the independent ventilation cage is obtained; the control device adjusts the wind speed of the independent ventilation cage to the target wind speed v. Wherein, ACH is the number of air changes per unit time of the independent ventilation cage, r is the air volume leakage rate of the independent ventilation cage, N is the number of cages of the independent ventilation cage, V0 is the cage volume of the independent ventilation cage, and S is the cross-sectional area of the air duct of the independent ventilation cage.
[0030] Thus, by combining the air exchange rate ACH per unit time of the independently ventilated cage, the target ventilation volume Q of the independently ventilated cage can be calculated in this embodiment of the present disclosure. a Furthermore, considering the issue of airflow leakage, the actual ventilation volume needs to be greater than the target ventilation volume to meet the airflow requirements for creating a clean rearing environment. Specifically, in this embodiment, the compensated ventilation volume Q of the independently ventilated cage is determined by combining the airflow leakage rate r of the independently ventilated cage. b Furthermore, to avoid increasing the number of air changes per unit time, this embodiment calculates the target ventilation volume Q. a Compensating for air exchange volume Q b The sum of values is used to determine the optimal ventilation volume for the independently ventilated cage, and based on this, the target wind speed v for the independently ventilated cage is determined. This allows for compensation of the theoretical ventilation volume of the independently ventilated cage by optimizing the wind speed. Therefore, the embodiments of this disclosure can meet the air volume requirements without changing the number of air changes per unit time, which is beneficial for creating a clean breeding environment and ensuring the health and safety of experimental animals.
[0031] Based on the aforementioned independent ventilation cage, combined with Figure 3As shown, this disclosure provides another control method for an independently ventilated cage, including: S201, The control device obtains the number of air changes per unit time for the independent ventilation cage.
[0032] S202, The control device obtains the air volume leakage rate of the independent ventilation cage.
[0033] S203, the control device according to Q a =ACH*N*V0, obtain the target ventilation volume Q of the independent ventilation cage. a .
[0034] S204, the control device according to Q b =r*N*V0, to obtain the compensated ventilation volume Q of the independent ventilation cage. b .
[0035] S205, the control device is based on S*v=Q a +Q b To obtain the target wind speed v of the independently ventilated cage.
[0036] S206, The control device adjusts the wind speed of the independent ventilation cage to the target wind speed v.
[0037] Where ACH is the number of air changes per unit time of the independent ventilation cage, r is the air volume leakage rate of the independent ventilation cage, N is the number of cages of the independent ventilation cage, V0 is the cage volume of the independent ventilation cage, and S is the cross-sectional area of the duct of the independent ventilation cage.
[0038] Using the control method for independently ventilated cages provided in this disclosure, combined with the air change rate ACH of the independently ventilated cages per unit time, the target air change volume Q of the independently ventilated cages can be calculated. a Furthermore, considering the issue of airflow leakage, the actual ventilation volume needs to be greater than the target ventilation volume to meet the airflow requirements for creating a clean rearing environment. Specifically, in this embodiment, the compensated ventilation volume Q of the independently ventilated cage is determined by combining the airflow leakage rate r of the independently ventilated cage. b Furthermore, to avoid increasing the number of air changes per unit time, this embodiment calculates the target ventilation volume Q. a Compensating for air exchange volume Q b The sum of values is used to determine the optimal ventilation volume for the independently ventilated cage, and based on this, the target wind speed v for the independently ventilated cage is determined. This allows for compensation of the theoretical ventilation volume of the independently ventilated cage by optimizing the wind speed. Therefore, the embodiments of this disclosure can meet the air volume requirements without changing the number of air changes per unit time, which is beneficial for creating a clean breeding environment and ensuring the health and safety of experimental animals.
[0039] Specifically, by combining the calculation formulas from steps S203 to S205 above, we can obtain the equation S*v=ACH*N*V0+r*N*V0.
[0040] After converting the above equation, the target wind speed of the independent ventilation cage can be determined as v = (ACH + r) * N * V0 / S.
[0041] The number of cages N, the cage volume V0, and the cross-sectional area S of the duct are all constants, which can be obtained in advance by querying the specific model of the independent ventilation cage. The number of air changes per unit time (ACH) and the air volume leakage rate (r) are variables, which can be set according to the actual needs of the staff. During the use of the independent ventilation cage, by obtaining the number of air changes per unit time (ACH) and the air volume leakage rate (r), the target wind speed (v) of the independent ventilation cage can be quickly calculated, thus achieving reasonable compensation for the theoretical ventilation volume.
[0042] Based on the aforementioned independent ventilation cage, combined with Figure 4 As shown, this disclosure provides another control method for an independently ventilated cage, including: S301, The control device obtains the number of air changes per unit time for the independent ventilation cage.
[0043] S302, The control device obtains the air volume leakage rate of the independent ventilation cage.
[0044] S303, the control device according to Q a =ACH*N*V0, obtain the target ventilation volume Q of the independent ventilation cage. a .
[0045] S304, the control device obtains the air volume leakage rate r of the independent ventilation cage according to r=r0*(1+k*v).
[0046] S305, the control device according to Q b =r*N*V0, to obtain the compensated ventilation volume Q of the independent ventilation cage. b .
[0047] S306, the control device is based on S*v=Q a +Q b To obtain the target wind speed v of the independently ventilated cage.
[0048] S307, The control device adjusts the wind speed of the independent ventilation cage to the target wind speed v.
[0049] Where ACH is the number of air changes per unit time of the independent ventilation cage, r is the air volume leakage rate of the independent ventilation cage, N is the number of cages of the independent ventilation cage, V0 is the cage volume of the independent ventilation cage, S is the cross-sectional area of the duct of the independent ventilation cage, r0 is the basic leakage rate of the independent ventilation cage, and k is the wind speed leakage factor of the independent ventilation cage.
[0050] The control method for independent ventilation cages provided in this disclosure can take into account the influence of actual wind speed on air volume leakage rate. By introducing wind speed leakage factor k, the basic leakage rate r0 of the independent ventilation cage can be reasonably corrected, thereby obtaining an air volume leakage rate that is more in line with the actual ventilation conditions. This is beneficial for determining a more accurate target wind speed for the independent ventilation cage.
[0051] Specifically, by combining the calculation formulas of steps S303 to S306 above, we can obtain the equation S*v=ACH*N*V0+r0*(1+k*v)*N*V0.
[0052] After converting the above equation, the target wind speed of the independent ventilation cage can be determined as v = (ACH + r0) * N * V0 / (Sk * r0 * N * V0).
[0053] In this system, the number of cages N, cage volume V0, duct cross-sectional area S, and basic leakage rate r0 are all constants, which can be obtained in advance by querying the specific model of the independent ventilation cage. The number of air changes per unit time ACH is a variable and can be set according to the actual needs of the staff. The wind speed leakage factor k can be measured according to the specific product to determine the actual airflow leakage of the independent ventilation cage. Optionally, in some embodiments, the number of cages N=60, the value of r0 ranges from 0.005 to 0.01, the value of the number of air changes per unit time ACH ranges from 60 to 100, and the wind speed leakage factor k=0.5. Thus, during the use of the independent ventilation cage, by obtaining the number of air changes per unit time ACH and the wind speed leakage factor k, the target wind speed v of the independent ventilation cage can be quickly calculated, achieving accurate compensation for the theoretical ventilation volume.
[0054] Optionally, the control device determines the wind speed leakage factor of the independently ventilated cage in the following manner: the control device acquires the difference between the inlet and outlet air velocities corresponding to each cage; the control device determines the wind speed leakage factor corresponding to each cage based on the difference between the inlet and outlet air velocities corresponding to each cage; and the control device determines the wind speed leakage factor of the independently ventilated cage based on the wind speed leakage factor corresponding to each cage. In this way, the embodiments of this disclosure can take into account the differences in the sealing performance of different cages, and by acquiring the difference between the inlet and outlet air velocities corresponding to each cage, the actual airflow leakage situation of each cage can be judged, thereby determining the corresponding wind speed leakage factor. By comprehensively analyzing the wind speed leakage factors corresponding to each cage, the embodiments of this disclosure can determine the total wind speed leakage factor of the independently ventilated cage, which is beneficial for accurately calculating the target wind speed of the independently ventilated cage, so as to achieve accurate compensation for the theoretical ventilation volume.
[0055] Optionally, the inlet air velocity for each cage is a preset value, and the outlet air velocity for each cage is a measured value. In this way, the embodiments of this disclosure can set the same inlet conditions for each cage, that is, allow each cage to inlet air at a preset inlet air velocity. Then, by detecting the actual outlet air velocity of each cage, the embodiments of this disclosure can determine the actual leakage air volume of each cage by combining the difference between the inlet and outlet air velocities, thereby facilitating the assessment of the overall leakage situation of the independently ventilated cages.
[0056] Optionally, the control device determines the velocity leakage factor for each cage based on the difference between the inlet and outlet velocities, including: the control device based on Q... bi =S0*(v i -v oi ), obtained the first i The leakage air volume Q corresponding to each cage box bi The control device is based on r0*(1+k) i *v oi )*V0=Q bi , obtained the i The wind speed leakage factor k corresponding to each cage i Where S0 is the cross-sectional area of the ventilation holes in the cage, and v i v is the air intake velocity of the cage. oi For the first i The corresponding airflow speed for each cage. i =1,2,3,...,N. Thus, combining the corresponding air intake velocity v for each cage... i With the exhaust wind speed v oi The difference between the values in this embodiment allows for the calculation of the actual leakage air volume in each cage. Then, the wind speed leakage factor k is calculated from the actual leakage air volume. iThis allows for a better understanding of the differences in airflow leakage between different cages. Furthermore, it enables the determination of the total wind speed leakage factor for independently ventilated cages, facilitating the accurate calculation of the target wind speed for these cages.
[0057] Specifically, by combining the calculations from the above steps, we can obtain the equation r0*(1+k i *v oi )*V0=S0*(v i -v oi ).
[0058] After converting the above equation, the first... i The wind speed leakage factor k corresponding to each cage i =[S0*(v i -v oi )-r0*V0] / (r0*v oi *V0).
[0059] Among them, the cage volume V0, the cross-sectional area of the cage's ventilation holes S0, and the basic leakage rate r0 are all constants, which can be obtained in advance by consulting the specific model of the independent ventilation cage. The cage's air intake velocity v i These are preset values; please refer to the experimental requirements for setting them. The [preset value] is the [preset value]. i The corresponding air outlet velocity v for each cage oi As a variable, the wind speed can be obtained by installing wind speed sensors at the air outlets of each cage. The corresponding air outlet wind speed v for each cage is then obtained. oi This allows for the rapid calculation of the wind speed leakage factor k corresponding to each cage. i This helps to understand the differences in leakage conditions of different cages.
[0060] Optionally, the control device determines the wind speed leakage factor of the independently ventilated cage based on the wind speed leakage factor corresponding to each cage box, including: the control device based on k=Σk i / N, determine the wind speed leakage factor k of the independent ventilation cage. Thus, this embodiment of the disclosure can determine the wind speed leakage factor k corresponding to each cage. i The average value is calculated to obtain the total wind speed leakage factor k of the independently ventilated cages, thereby making it easier to calculate the target wind speed v of the independently ventilated cages and achieve accurate compensation for the theoretical ventilation volume. Because the actual air volume leakage of each cage is taken into account, the embodiments of this disclosure can more reasonably optimize the wind speed of the independently ventilated cages to more reliably meet the air volume requirements.
[0061] Based on the aforementioned independent ventilation cage, combined with Figure 5 As shown, this disclosure provides another control method for an independently ventilated cage, including: S401, The control device obtains the number of air changes per unit time for the independently ventilated cage.
[0062] S402, The control device obtains the air volume leakage rate of the independent ventilation cage.
[0063] S403, the control device according to Q a =ACH*N*V0, obtain the target ventilation volume Q of the independent ventilation cage. a .
[0064] S404, the control device according to Q b =r*N*V0, to obtain the compensated ventilation volume Q of the independent ventilation cage. b .
[0065] S405, the control device is based on S*v=Q a +Q b To obtain the target wind speed v of the independently ventilated cage.
[0066] S406, the control device determines the target speed of the fan based on the target wind speed v of the independent ventilation cage.
[0067] S407, the control device controls the fan to run at the target speed.
[0068] The control method for an independent ventilation cage provided in this embodiment can adjust the wind speed of the independent ventilation cage to the target wind speed by controlling the fan to run at the target speed, thereby compensating for the theoretical air exchange volume of the independent ventilation cage and meeting the air volume requirements without changing the number of air exchanges per unit time.
[0069] Combination Figure 6 As shown, this embodiment of the disclosure provides a control device 400 for an independently ventilated cage, including a processor 401 and a memory 402. Optionally, the control device 400 may further include a communication interface 403 and a bus 404. The processor 401, communication interface 403, and memory 402 can communicate with each other via the bus 404. The communication interface 403 can be used for information transmission. The processor 401 can call logical instructions in the memory 402 to execute the control method for an independently ventilated cage described in the above embodiment.
[0070] Furthermore, the logical instructions in the aforementioned memory 402 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.
[0071] The memory 402, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 401 executes functional applications and data processing by running the program instructions / modules stored in the memory 402, thereby implementing the control method for the independent ventilation cage described above.
[0072] The memory 402 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 402 may include high-speed random access memory and may also include non-volatile memory.
[0073] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described control method for an independently ventilated cage.
[0074] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, such as a USB flash drive, external hard drive, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, etc., and other media capable of storing program code.
[0075] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.
[0076] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.
[0077] The methods and products disclosed in the embodiments herein (including but not limited to devices and equipment) can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to implement this embodiment according to actual needs. In addition, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
[0078] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.
Claims
1. A control method for an independent ventilation cage, characterized in that, include: Obtain the number of air changes per unit time for an independently ventilated cage; Obtain the air volume leakage rate of the independent ventilation cage; Adjust the air velocity of the independent ventilation cage according to the number of air changes per unit time and the air volume leakage rate. The adjustment of the air velocity of the ventilation cage based on the number of air changes per unit time and the air volume leakage rate of the independent ventilation cage includes: According to Q a =ACH*N*V0, the target ventilation volume Q of the independent ventilation cage is obtained a ; The air leakage rate r of the independent ventilation cage is obtained by using r=r0*(1+k*v); According to Q b = r * N * V0, the compensation ventilation volume Q of the independent ventilation cage is obtained b ; According to S*v=Q a +Q b , obtain the target wind speed v of the independent ventilation cage Adjust the wind speed of the independent ventilation cage to the target wind speed v; Where ACH is the number of air changes per unit time of the independent ventilation cage, r is the air volume leakage rate of the independent ventilation cage, N is the number of cages of the independent ventilation cage, V0 is the cage volume of the independent ventilation cage, S is the cross-sectional area of the duct of the independent ventilation cage, r0 is the basic leakage rate of the independent ventilation cage, and k is the wind speed leakage factor of the independent ventilation cage.
2. The method of claim 1, wherein, The wind speed leakage factor of an independently ventilated cage is determined in the following ways: Obtain the difference between the inlet air velocity and the outlet air velocity for each cage. The wind speed leakage factor for each cage is determined based on the difference between the inlet and outlet air velocities for each cage. The wind speed leakage factor of the independently ventilated cage is determined based on the wind speed leakage factor corresponding to each cage.
3. The method of claim 2, wherein, Based on the difference between the inlet and outlet air velocities for each cage, the velocity leakage factor for each cage is determined, including: According to Q bi =S0*(v i -v oi ), obtained the first i The leakage air volume Q corresponding to each cage box bi ; According to r0*(1+k) i *v oi )*V0=Q bi , obtained the i The wind speed leakage factor k corresponding to each cage i ; Where S0 is the cross-sectional area of the ventilation holes in the cage, v i v is the air intake velocity of the cage. oi For the first i The corresponding airflow velocity for each cage. i =1,2,3,...,N.
4. The method of claim 2, wherein, Based on the wind speed leakage factor corresponding to each cage, determine the wind speed leakage factor of the independently ventilated cage, including: The wind speed leakage factor k of the independent ventilation cage is determined according to k =∑k i / N.
5. The method according to any one of claims 1 to 4, characterized in that, Adjusting the wind speed of the independently ventilated cage to the target wind speed v includes: Determine the target speed of the fan based on the target wind speed v of the independent ventilation cage; Control the fan to run at the target speed.
6. A control device for an independent ventilation cage comprising a processor and a memory having stored program instructions, characterised in that, The processor is configured to execute, when running the program instructions, the control method for an independently ventilated cage as described in any one of claims 1 to 5.
7. An individual ventilated cage characterized in that, include: cage frame; Cage boxes are installed on cage frames; there are multiple cage boxes. The air duct, connected to the cage box, is configured to ventilate the cage box; The fan, installed in the air duct, is configured to regulate the airflow speed; The control device for an independent ventilation cage as described in claim 6 is electrically connected to the fan.
8. A computer readable storage medium storing program instructions, characterized in that, When the program instructions are executed, they cause the computer to perform the control method for an independently ventilated cage as described in any one of claims 1 to 5.