A method and system for closed-loop control of drinking water for caged birds, and an electronic device

Abstract

The application provides a cage poultry drinking water closed-loop control method and system and an electronic device, and comprises the following steps: obtaining historical operation data of a cage poultry house, wherein the historical operation data at least comprises light-on time and water supplement time of each drinking water line; predicting next light-on time based on the historical operation data; and starting a pre-water supplement program in advance according to the predicted next light-on time, so that the drinking water line completes water supplement before the light is turned on. Through the data-driven feedforward control mechanism, the application overcomes the hysteresis of the traditional feedback control, realizes accurate synchronization of the water supply rhythm and the physiological rhythm of the poultry, and improves the drinking water welfare and production performance.

Description

Technical Field

[0001] This invention relates to the field of closed-loop control technology for drinking water in caged poultry, specifically to a closed-loop control method, system, and electronic equipment for drinking water in caged poultry. Background Technology

[0002] In modern large-scale caged poultry farming, drinking water management is a key link that directly affects poultry health, production performance and farming efficiency. Ideal drinking water management needs to accurately meet the drinking water needs of the flock at different times (such as peak feeding period when lights are on, high temperature period, and resting period when lights are off), while effectively solving problems such as water line blockage and high temperature water retention, and minimizing water stagnation in the pipeline to inhibit bacterial growth.

[0003] However, existing intelligent management solutions for drinking water pipes in caged poultry have some significant drawbacks: First, existing technologies generally employ passive response control logic, lacking predictive capabilities. For example, when the lights are turned on in the chicken coop, the flock enters its peak feeding and drinking period, often causing the water level at the end of the drinking line to drop rapidly. Existing solutions mostly only initiate water replenishment after detecting a drop in water level, resulting in a delayed response and failing to meet the urgent need for the flock to drink a large amount of water immediately after the lights are turned on. Although some solutions have a timed water replenishment function, they cannot dynamically optimize the timing of water replenishment based on historical data. For example, Chinese patent publication number CN114079666B points out that traditional drinking water control methods are mostly based on timed water supply or fixed flow supply, lacking the ability to perceive and dynamically adjust the actual drinking behavior of poultry and environmental changes in real time, making it difficult to adapt to changing breeding cycles and lighting programs. Secondly, existing water replenishment control methods are crude, often employing actuators such as solenoid valves with only two states: fully open or fully closed. During peak water replenishment periods, the valves open instantly, causing a sudden surge in water pressure within the drinking pipes. Excessive water pressure can prevent poultry from pecking at the nipples, resulting in water shortages. Furthermore, frequent high-pressure impacts can cause irreversible mechanical damage to the drinking pipes, shortening equipment lifespan. For example, the existing technology with publication number CN217826366U uses an open-loop control mode that sets a time and then initiates flushing. The controller sets the intermittent opening time of the solenoid valve in the pressurization zone to intermittently pressurize and flush the water line. This solution relies solely on time parameters to control the cleaning process, lacking a closed-loop feedback verification mechanism based on flow recovery rate. The cleaning effect cannot be evaluated in real time, and improper time parameters may lead to insufficient or excessive flushing. In addition, excessive water replenishment through full-opening can also waste water resources. Furthermore, existing solutions generally lack intelligent fault diagnosis and automatic processing capabilities. For the common problem of drinking water pipe blockage, existing products mostly only provide a water shortage alarm function, relying on human experience to observe and judge the location and degree of blockage, and then perform manual flushing, or adopt a timed flushing mode regardless of the situation. For example, the logic of the existing technology with publication number CN212813580U is monitoring-alarm-manual intervention or automatic flushing, which only provides a water shortage alarm function and relies on human experience to observe and judge the location and degree of blockage. It cannot quantitatively verify the blockage status and provide closed-loop feedback on the effect, resulting in waste of water and electricity resources, and it cannot provide targeted and verifiable closed-loop cleaning treatment for severe dynamic blockages.

[0004] In summary, the existing technology lacks a closed-loop control scheme for caged poultry drinking water that can achieve predictive water replenishment, precise control of constant water level under slow pressure, and intelligent blockage diagnosis and verification cleaning.

[0005] Therefore, the existing technology still needs further development. Summary of the Invention

[0006] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a closed-loop control method, system, and electronic equipment for caged poultry drinking water, so as to solve the problems existing in the prior art.

[0007] To achieve the above-mentioned technical objectives, according to a first aspect of the present invention, the present invention provides a closed-loop control method for drinking water in caged poultry, comprising: S100. Obtain historical operating data of the caged poultry house, wherein the historical operating data includes at least the lighting time and the water replenishment time of each watering line; S200. Based on the historical operating data, predict the next time the sunlight will be turned on; S300. Based on the predicted next light-on time, start the pre-water replenishment program in advance so that the water supply line can be replenished before the light is turned on.

[0008] Specifically, the pre-water replenishment procedure includes: Based on the water replenishment time of each water line, the actuators corresponding to each water line are activated sequentially to replenish the water lines one by one.

[0009] Specifically, the actuator is an electric actuator with an adjustable opening angle.

[0010] Specifically, the method further includes: During periods outside of the pre-replenishment water program, when a drop in the water level of any drinking water line is detected, it is determined whether the current period is a peak drinking water period. If so, the opening angle of the electric actuator corresponding to the water supply line is gradually increased in a step-by-step manner, and the current opening angle of the electric actuator is maintained after the water level is detected to return to normal.

[0011] Specifically, the method of gradually increasing the opening angle of the electric actuator corresponding to the water supply line in a step-by-step manner includes: The electric actuator is activated in a stepwise manner, with a first preset duration as the action unit; After each action, wait a second preset time interval to obtain the water level recovery status; The fully open operation time of the electric actuator is set to a third preset time, and the maximum opening angle is set to correspond to a fourth preset time. The fourth preset time is less than the third preset time required for the fully open operation of the electric actuator.

[0012] Specifically, the method for determining whether the current period is a peak drinking water period includes: Obtain the current system time, as well as the recorded lighting on time and key status events determined by the preset feeding plan; The key status events include at least: light-on event, feeding in progress event, and feeding end event; When the system time matches the occurrence time or duration of any of the key state events, it is determined that the current period is the peak drinking water period.

[0013] Specifically, the method further includes: During periods when there is no pre-replenishment procedure and no peak drinking water period, determine whether the water level drops again and triggers replenishment within a preset time window after the water level of the drinking water line is restored by the replenishment action, and whether the frequency of occurrence reaches a preset threshold. If so, mark the drinking water line as a water line to be diagnosed. During the preset resting period of the poultry flock, the electric actuator corresponding to the waterline to be diagnosed is turned on, and the flow rate data in the flow path of the waterline to be diagnosed is acquired. The rate of change of the flow data is compared with a preset normal rate threshold. If the rate of change is less than the normal rate threshold, it is determined that the water line to be diagnosed is blocked.

[0014] Specifically, after determining that the water line to be diagnosed is blocked, the method includes: Start the high-pressure cleaner to clean the high-pressure pulse gas output from the water line to be diagnosed; During the cleaning process, the rate of change of the pulse water meter data is compared again at preset intervals. If the rate of change is greater than or equal to the normal rate threshold, the cleaning is stopped and the corresponding electric actuator is turned off. Otherwise, the high-pressure cleaner is restarted for cleaning until the rate of change returns to being greater than or equal to the normal rate threshold, at which point the cleaning is stopped and the corresponding electric actuator is turned off.

[0015] According to a second aspect of the present invention, a closed-loop control system for drinking water in caged poultry is provided, comprising: Acquisition module: used to acquire historical operating data of caged poultry houses, including at least the lighting time and the water replenishment time of each watering line; Prediction module: used to predict the next time sunlight will be turned on based on the historical operating data; Control module: Used to start the pre-water replenishment program in advance based on the predicted next time the light will be turned on, so that the water supply line can be replenished before the light is turned on.

[0016] According to a third aspect of the present invention, an electronic device is provided, comprising: a memory; and a processor, wherein the memory stores computer-readable instructions, which, when executed by the processor, implement the above-described closed-loop control method for drinking water in caged poultry.

[0017] Beneficial effects: This invention provides a closed-loop control method and system for drinking water in caged poultry. By predicting the lighting start time based on historical operating data and initiating a pre-water replenishment program in advance, the data-driven feedforward control mechanism overcomes the lag of traditional feedback control, solving the problem of untimely water supply at the beginning of lighting, and significantly improving the drinking welfare and production performance of the poultry flock. By using a step-by-step control method to gradually increase the opening angle of the electric actuator during peak drinking periods, combined with refined constraints on the maximum opening and action sequence, the flexible adjustment principle replaces the rigid switch control in the prior art, avoiding the negative impact of water pressure shocks on poultry drinking behavior and equipment safety. By screening water lines to be diagnosed based on abnormal water replenishment frequency during off-peak periods, and verifying the blockage status by the flow rate change during resting periods, thus triggering closed-loop self-cleaning, the system realizes the transformation from passive maintenance to proactive preventive maintenance, significantly reducing manual operation and maintenance costs and ensuring the biosecurity of the farmed animals. Attached Figure Description

[0018] Figure 1 This is a flowchart of the closed-loop control method for drinking water in caged poultry provided in a specific embodiment of the present invention; Figure 2 This is a schematic diagram of the system composition of the closed-loop control system for caged poultry drinking water provided in a specific embodiment of the present invention; Figure 3 This is a schematic diagram of the composition of the closed-loop control system for drinking water for caged poultry provided in a specific embodiment of the present invention. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0020] This invention realizes the automatic control function of water for caged poultry, effectively solving the problem that due to the large number of water lines and the large number of poultry groups, it is impossible to carry out precise management of drinking water and energy consumption during use. By using intelligent algorithms to automatically manage each link of drinking water for caged poultry and special situations, it can effectively reduce the cost of manual management.

[0021] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0022] Example 1 Please see Figure 1This embodiment provides a closed-loop control method for drinking water in caged poultry. The core of this solution lies in using historical operating data to construct an active water supply prediction model to replace the traditional passive liquid level triggering mechanism. Specifically, this solution includes the following steps: Step S100: Obtain historical operating data of the caged poultry house. The historical operating data shall include at least the lighting time and the water replenishment time of each watering line.

[0023] Understandably, acquiring historical operational data is fundamental to building predictive models. In practical applications, the system uses photosensitive sensors to monitor changes in ambient light intensity in real time to record the daily lighting activation times. Simultaneously, it utilizes level sensors and actuator feedback signals to accurately measure the time required for each watering line to return to normal water levels, i.e., the water replenishment time. For example, the system can continuously record the lighting times and corresponding water line replenishment times over the past 7 days or longer, forming a time-series dataset containing timestamps and durations. It should be understood that, in other implementations, auxiliary parameters such as ambient temperature and flock age can be further correlated, as long as these data reflect the correlation between water demand and time. By continuously accumulating this real-world operational data, changes in water supply characteristics caused by seasonal variations, equipment aging, or flock growth can be captured, providing reliable data support for subsequent accurate predictions.

[0024] Step S200: Based on historical operating data, predict the next time the sunlight will be turned on.

[0025] Understandably, the prediction process is not a simple fixed timing, but a dynamic deduction based on data patterns. The system can use various algorithms to fit and analyze historical data. For example, it can use the moving average method to calculate the average of recent lighting start times, or use the period matching algorithm to identify weekly cycle patterns. It can even use a weighted regression model to give higher weight to recent data to adapt to seasonal adjustments. For example, if historical records show that the lighting start times for the past three days are 05:00, 04:58, and 04:57, and show a trend of gradually starting earlier, the prediction algorithm can infer that the lighting start time for the next day is about 04:56, rather than mechanically using the initially set 05:00. This data-based prediction mechanism can effectively adapt to the effects of fine-tuning of the farm's lighting program or changes in natural light, ensuring that the prediction results always match the actual production rhythm and avoiding synchronization errors caused by program changes in fixed timers.

[0026] Step S300: Based on the predicted next time the light will be turned on, start the pre-water replenishment program in advance so that the water supply line can be replenished before the light is turned on.

[0027] Understandably, the advance start time is dynamically determined based on the predicted lighting start time and the total water replenishment time currently assessed by the system. After predicting the specific time of the next lighting start, the trigger point for the pre-water replenishment program is calculated backward. This trigger point equals the predicted lighting start time minus the estimated total time required to replenish all water lines. For example, if the system predicts that the lights will be turned on at 04:56 tomorrow, and the system determines from historical data that it will take 15 minutes to replenish all water lines under the current conditions, the system will automatically start the pre-water replenishment program at 04:41. It is important to emphasize that the goal is to complete the water replenishment before the lighting starts, ensuring that the pipeline is full of drinkable water when the lights are on and the flock begins to move. This does not involve the specific water replenishment execution sequence or valve type, which provides flexible implementation space for subsequent embodiments. Through this feedforward control mechanism, the problem of water supply lag caused by response delay in the early stage of lighting in traditional feedback control is solved, achieving precise synchronization between the water supply rhythm and the physiological rhythm of the flock, significantly improving the drinking welfare and production performance of the flock during critical periods.

[0028] In this embodiment, the pre-water replenishment procedure includes: according to the water replenishment time of each water line, sequentially activating the actuators corresponding to each water line to replenish the water lines one by one.

[0029] It should be noted that this sequential control strategy of opening water lines in turn is designed to address the hydraulic imbalance in the pipe network caused by simultaneous replenishment of multiple water lines. In large-scale caged poultry houses, the water supply network is usually long and has many branches. If all the valves on the drinking water lines are opened at the same time, the water pressure in the main pipeline will drop sharply due to the excessive instantaneous flow demand. This will cause the drinking water lines at the end of the network to receive water slowly or even not at all, resulting in water shortage at the end and overflow at the front. By staggering the peak replenishment times based on the actual water replenishment time of each drinking water line in historical records, the system can smooth the instantaneous load on the pipe network. For example, suppose a poultry house has 6 drinking water lines. The system records historical water replenishment times as T1, T2, T3, T4, T5, and T6. The total execution time of the pre-replenishment program is ΣTi (the sum of T1 to T6). Combined with the prediction mechanism, the system will start replenishing the first water line at least ΣTi before the predicted next time the sunlight will be turned on. Then, it will trigger the subsequent water lines in a predetermined order to ensure that all water lines are replenished and the network pressure remains stable at the moment the sunlight is turned on. The system can also dynamically adjust the opening interval based on real-time water pressure feedback, as long as the core concept of replenishing each line one by one to avoid pressure surges is met.

[0030] Optionally, the actuator is an electric actuator with an adjustable opening angle.

[0031] It should be noted that, by adopting the above technical solution, unlike the solenoid valves or ball valves in traditional aquaculture equipment that only have two states—fully open and fully closed—the electric actuator with adjustable opening angle allows the control system to precisely set the valve opening percentage in a linear or non-linear manner. This achieves continuous adjustment of the water replenishment flow rate rather than step-by-step on / off switching. In this embodiment, this feature primarily serves the flow matching during the pre-water replenishment stage. That is, the system can set differentiated initial opening degrees based on the differences in pipe diameter or resistance characteristics of different water lines when opening them one by one, further optimizing the water replenishment efficiency. If a traditional on / off valve is used, even with the most advanced control algorithm, it is impossible to achieve a smooth pressure rise at the physical level, inevitably leading to water hammer or pressure overshoot. Therefore, combining the sequential strategy of replenishing water line by line with the flexible execution of adjustable opening degrees constitutes the dual guarantee of the pre-water replenishment mechanism of this application. It avoids concurrent impacts in the time dimension and retains the ability to fine-tune the flow rate in the spatial dimension, greatly improving the robustness of the water supply system and its adaptability to the drinking behavior of poultry flocks.

[0032] In a specific embodiment, a control strategy combining step-by-step constant pressure water replenishment and multi-factor judgment is constructed to further address the special operating conditions during peak drinking water periods. Specifically, during periods outside the pre-replenishment program, when a drop in the water level of any drinking water line is detected, it is determined whether the current period is a peak drinking water period. If so, the opening angle of the electric actuator corresponding to that drinking water line is gradually increased in a step-by-step manner, and the current opening angle of the electric actuator is maintained after the water level is detected to return to normal.

[0033] It should be noted that in large-scale farming, peak drinking times are often accompanied by poultry flocks pecking at the drinking nipples. If traditional solenoid valves or float valves are used for full-open water replenishment at this time, the water flow velocity in the pipeline will reach its peak instantaneously, which can easily cause water hammer, resulting in pipeline vibration or even joint detachment. More seriously, excessively high water pressure can lead to excessive water output and excessively strong spray from the drinking nipples, causing poultry to refuse to drink due to fear or inability to peck accurately, thus reducing the actual amount of water consumed. By discretizing the water replenishment process into multiple small incremental actions in a step-by-step manner, the pipeline pressure rises gradually rather than abruptly, which not only meets the water demand during peak periods but also maintains the dynamic balance of water pressure, ensuring a comfortable drinking experience for poultry and equipment safety.

[0034] Furthermore, in order to accurately trigger the aforementioned step control and avoid misusing the strategy during off-peak periods, which would reduce water replenishment efficiency, a multi-dimensional peak period determination mechanism is introduced. Specifically, the method for determining whether the current period is a peak drinking period includes: obtaining the current system time, the recorded light-on time, and the key status events determined by the preset feeding plan; the key status events include at least: light-on event, feeding in progress event, and feeding end event; when the system time matches the occurrence time or duration of any key status event, it is determined that the current period is a peak drinking period.

[0035] Furthermore, once it is determined that the peak water consumption period has passed, the electric actuator is gradually shut down in stages until it returns to its initial state before water replenishment. The rate of shutdown in stages is dynamically determined based on the matched key state event type.

[0036] It should be noted that poultry drinking behavior is not uniformly distributed, but highly coupled with light and feeding activities. Simply relying on fixed time periods to define peak periods is often not accurate enough, because seasonal changes or manual adjustments can cause deviations in actual routines. This embodiment maps the strong stimulus signal of light activation, as well as the accompanying physiological signals of feeding in progress and feeding completion, into dynamic time windows, achieving precise capture of actual drinking needs. For example, the system can be set to automatically activate the peak period determination flag within 30 minutes after light activation, or within one hour from the start to the end of feeding. This multi-factor fusion determination logic is more adaptable to the complex variables in the breeding site than a single time threshold judgment, ensuring that the step-by-step water replenishment strategy intervenes only when it is truly needed, taking into account both water supply security and energy efficiency management.

[0037] Furthermore, after determining the step control strategy, it is necessary to refine the constraints on its execution parameters to ensure the smoothness and safety of the adjustment process. Specifically, the method of gradually increasing the opening angle of the electric actuator corresponding to the drinking water line in a step manner includes: using a first preset time period as the action unit, the electric actuator is opened in a step manner; after each action, a second preset time period is elapsed to obtain the water level recovery status; wherein, the fully open running time of the electric actuator is set as a third preset time period, and the maximum opening angle is set to correspond to a fourth preset time period.

[0038] In a preferred embodiment, the first preset duration can be set to 200 milliseconds as the minimum increment of valve opening, ensuring fine adjustment. The second preset duration can be set to 10 seconds as an observation window between two actions, giving the water flow sufficient time to reach the level sensor and form a stable reading, avoiding over-adjustment oscillations caused by sensor response lag. More importantly, the third preset duration (e.g., 7000 milliseconds) defines the theoretical total stroke time of the actuator from fully closed to fully open, while the fourth preset duration (e.g., 3000 milliseconds) corresponds to a limited maximum opening angle. This means that even if the system calculates a very large water replenishment demand, the valve opening will not exceed the angle corresponding to the fourth preset duration. The fourth preset duration is less than the third preset duration required for the electric actuator to operate fully open. This hard limit is a safety threshold derived from a large number of field experiments, avoiding the possibility of the valve opening unexpectedly due to algorithm anomalies or sensor failures. It ensures that even in extreme cases, the outlet water pressure is always within a safe range acceptable to poultry and tolerable by the equipment, thereby further improving the robustness and practicality of the system.

[0039] In one specific embodiment, during periods when there is no pre-replenishment procedure and no peak drinking water period, it is determined whether the water level drops again and triggers replenishment within a preset time window after the water level of the drinking water line is restored by the replenishment action, and whether the frequency of occurrence reaches a preset threshold. If so, the drinking water line is marked as a water line to be diagnosed.

[0040] Specifically, the above technical solution sets strict fault screening trigger boundaries, requiring the simultaneous fulfillment of two negative conditions: non-pre-replenishment and non-peak drinking periods. This excludes rapid level drops caused by normal concentrated drinking by poultry, preventing misjudgments of high-load conditions as equipment failures. For example, during peak drinking periods, frequent water level fluctuations are normal physiological responses and should not trigger a diagnosis. During the pre-replenishment phase, the system is actively replenishing water, and level changes do not conform to fault characteristics. Only during regular periods after excluding these two normal scenarios, if a drinking line, having just completed replenishment and theoretically at full pressure, repeatedly experiences water level drops and triggers replenishment within a short period, and this phenomenon accumulates to a preset threshold (e.g., more than 3 times) within a certain period, does it indicate that the water line may have a persistent leak or false water shortage caused by foreign object blockage. This effectively filters false alarms caused by sensor jitter or occasional disturbances, providing reliable candidates for subsequent accurate diagnosis.

[0041] Furthermore, after initially identifying the suspected faulty water line, in order to avoid disturbing the poultry flock or interfering with normal drinking during the production period, the electric actuator corresponding to the water line to be diagnosed can be turned on during a preset poultry resting period, and the flow data in the flow path of the water line to be diagnosed can be obtained. The rate of change of the flow data is compared with the preset normal rate threshold. If the rate of change is less than the normal rate threshold, it is determined that the water line to be diagnosed is blocked.

[0042] It should be noted that the resting period for poultry usually refers to the time after lights out at night or when poultry activity is extremely low. At this time, the drinking nipples are essentially closed, and the water flow in the pipeline is no longer affected by the random consumption of water by the poultry's pecking behavior. The flow rate data purely reflects the pipeline's own flow capacity. During this period, the electric actuator is activated for no-load testing. The system collects flow data in real time through a pulse water meter and calculates its rate of change over time. For unobstructed pipelines, the flow rate should rapidly climb to the rated value after the valve is opened, resulting in a steep rate of change curve. However, for blocked pipelines with biofilm accumulation, drug residue sedimentation, or foreign object blockage, the flow rate rise will be significantly slower due to increased flow resistance, resulting in a flat rate of change or a lower steady-state flow. By comparing the measured rate of change with the normal rate threshold of the same type of water line in a healthy state stored in the database, the degree of blockage can be quantitatively confirmed. It should be understood that the rate of change can be calculated as the flow increment per unit time or the response time for the flow curve to reach a specific percentage opening, as long as it can characterize the dynamic characteristics of the flow path's unobstructed flow. By adopting the diagnostic logic described above, the accuracy of fault identification is significantly improved, and equipment health status perception is achieved without interfering with production.

[0043] Furthermore, once a blockage is confirmed in the water line, the system will automatically enter a closed-loop self-repair process. Optionally, after determining that the water line to be diagnosed is blocked, the high-pressure cleaner will be started to clean the high-pressure pulse gas output of the water line to be diagnosed. During the cleaning process, the rate of change of the pulse water meter data will be compared again at preset intervals. If the rate of change is greater than or equal to the normal rate threshold, the cleaning will be stopped and the corresponding electric actuator will be turned off. Otherwise, the high-pressure cleaner will be started again for cleaning until the rate of change returns to greater than or equal to the normal rate threshold, at which point the cleaning will be stopped and the corresponding electric actuator will be turned off.

[0044] It should be noted that high-pressure pulse gas cleaning utilizes the alternating impact effect of compressed air and water flow to create intense turbulence and cavitation within the pipeline. This effectively removes stubborn biofilms and deposits adhering to the pipe walls. Compared to simple high-pressure water flushing, it has stronger unblocking capabilities and lower water consumption. More importantly, this embodiment constructs a dynamic closed-loop control system of cleaning-verification-feedback, rather than using a fixed cleaning duration. During the cleaning process, the system uses the intervals between high-pressure pulses or a dedicated detection window to monitor the flow recovery in real time. If the flow rate has returned to normal, it indicates that the blockage has been cleared, and the system immediately stops cleaning, avoiding energy waste and mechanical damage to pipeline seals caused by over-cleaning. If the target is still not met, the next round is executed. The cleaning cycle continues until the fault is completely eliminated. For example, in one actual operation, the system detected that the flow rate rise time of the third water line was 4 seconds slower than normal during the resting test at 2:00 AM, which was determined to be a moderate blockage. High-pressure pulse cleaning was then initiated. After the first 30-second cleaning cycle, it was found that the rise time had shortened by 2 seconds but had not fully met the standard. The system automatically triggered the second cleaning cycle. After the second cycle, the flow characteristics were found to have returned to normal. The system then stopped cleaning and closed the valve. The entire process took only 90 seconds, which ensured the repair effect while minimizing the impact on the poultry's rest at night. This adaptive cleaning strategy based on real-time effect feedback significantly reduced the frequency and cost of manual inspection and maintenance, ensuring drinking water safety throughout the entire breeding cycle.

[0045] It should be further explained that the various control strategies disclosed in this embodiment are not simply the execution of preset static parameters, but rather a continuously evolving system built around intelligent adaptive learning. This adaptive capability is reflected in the following three aspects: (1) Adaptive learning of the breeding cycle rhythm. In large-scale breeding, the adjustment of the lighting program, the change of day and night length caused by seasonal changes, and the management differences when different batches of poultry are transferred in and out will all introduce time-varying external disturbances. Traditional solutions rely on manual periodic calibration of timers or correction of parameter tables. Once maintenance is neglected, there will be a cumulative deviation between the preset rules and the actual production rhythm. In this embodiment, the prediction model constructed through steps S100 to S300 does not fix a set of lighting time or water replenishment time, but continuously collects recent historical data with a sliding time window, giving the recent data a higher fitting weight, so that the prediction value automatically tracks the drift trend of the lighting program. At the same time, the system also learns about the water replenishment time. As pipelines age, filters become clogged, or water pressure fluctuates seasonally, the water replenishment time of each drinking water line will slowly shift. The system automatically updates this timing parameter to ensure that the trigger advance of the pre-replenishment program always matches the current physical conditions. This automatic tracking and calibration of time-varying rhythms enables this solution to maintain control accuracy without manual intervention during long-term operation.

[0046] (2) Adaptive learning of poultry flock drinking behavior patterns: In the step-by-step constant pressure water replenishment strategy, the system does not respond to all drinking peak periods with fixed parameters. There are significant differences in pecking intensity, group synchronization, and peak duration among poultry flocks of different ages and breeds. For example, the drinking peak in the chick stage is sharp and short-lived, while the drinking demand during the egg-laying peak is large and dispersed. In each peak water replenishment event, this invention continuously records the final holding opening degree, holding duration, and the rate of phased closing after leaving the peak of the electric actuator. These data are associated with the current age of the flock and the type of key state events and stored. After accumulating data over several breeding cycles, a dynamic mapping table of flock status and control parameters is constructed. When facing a similar peak scenario again, the system can retrieve historical optimal parameters as initial values, significantly shortening the convergence time of step-by-step adjustment and making the water replenishment response more rapid and smooth. This parameter self-optimization mechanism based on experience accumulation gives the system the ability to generalize and adapt across batches and breeds.

[0047] (3) Adaptive learning of equipment health status: In the blockage diagnosis and closed-loop self-repair process, the baseline used to determine the normal rate threshold is not a fixed value written at the factory. Due to differences in pipe diameter, installation layout, and historical cleaning frequency, the flow rate change rate of each water line in its health status has individual differences. In this embodiment, after each water line is first installed or cleaned and confirmed to be unobstructed, a calibration test is automatically performed to collect the flow rate change curve in its clean state as the personalized normal baseline of the water line. In subsequent diagnosis, the deviation of the water line from its own historical health status is compared, rather than the deviation from the general theoretical value, thus avoiding false alarms caused by individual differences in pipelines. Furthermore, the system continuously records the interval between the unobstructed state and the appearance of early blockage symptoms of each water line, learns the blockage rate curve of the water line under specific seasons and specific water quality conditions, and then issues an early warning before the actual blockage occurs, thereby upgrading the maintenance strategy from fault repair to prediction and prevention.

[0048] Understandably, the three levels of adaptive learning described above differ from the single closed loop of simple PID control that senses deviation and adjusts output. Instead, it achieves a dual-loop intelligent control architecture that senses deviation, adjusts output, memorizes effects, and optimizes the model. It is this inherent learning and evolutionary capability that enables this solution to maintain optimal control performance in complex aquaculture scenarios with long time spans and multi-variable coupling.

[0049] See Figure 1 The following example, using all-weather chicken coop drinking water management, illustrates the specific implementation process of the closed-loop control method for caged poultry drinking water in this embodiment: Step 1: After the system is turned on, the chicken house layer specifications need to be set. The system will automatically form a position matrix according to the set layer specifications and display it on the screen of the intelligent control terminal. The system will automatically complete the matching of the terminal liquid level sensors and electric actuators, and install the liquid level sensors at different heights according to the type of chicken flock. Step 2: Based on the connected photosensitive sensor, water temperature sensor, and various electric actuators, implement 24 / 7 drinking water management in the chicken house. The specific steps are as follows: (1) Set the drinking water temperature to a high temperature; (2) According to the photosensitive sensor, after the chicken house lights are turned on, the main water supply electric actuator is automatically turned on, and the electric actuators of the bypass of the pressure regulator are turned on in sequence to quickly fill each drinking line with water. (3) The system automatically records the last time the lights were turned on, the total time it took to fill all the water lines last time, and the time it took to fill each water line. (4) Record the time it took for the drinking pipes to be fully replenished last time. After confirming that the daily lighting time is a fixed cycle, automatically calculate the time point for the next lighting and open the actuators at all levels in advance to ensure that the flock can drink water as soon as the lights are turned on. (5) Continuously optimize the opening time of each actuator according to the time of each light-on, so as to maximize the time that no water remains in the water pipe during the light-off period, and ensure that the chickens can meet their drinking needs as soon as the lights are turned on. (6) When the system detects that the average temperature of the drinking pipe exceeds the high temperature value of drinking water at other times, it automatically controls the electric actuator of the drinking pipe closest to the water inlet to open. After the temperature of the sensor decreases and remains stable, the low temperature drinking water has entered the drinking pipe. It runs according to the single drinking line replenishment time recorded in step (3), and then opens the electric actuators of other drinking pipes in sequence until the last electric actuator is closed. The high temperature water in the drinking pipe is forced out of the drinking pipe by water pressure to change the water in the whole chicken house. Step 3: Utilizing the controllable opening size of the electric actuator, the opening angle of the bypass valve of the poultry pressure regulator is intelligently controlled to adjust the flow rate of the bypass water supply. This solves the problem of water level drops during peak drinking periods of the flock, preventing the flock from obtaining sufficient drinking water in a timely manner. Using an intelligent self-learning algorithm, the valve opening angle, time, holding time, and other parameters necessary for maintaining the water level are automatically updated. At the same time, it can effectively control the problem of excessively high water pressure during high-pressure water supply, preventing the flock from drinking, and the waste of water resources caused by poor control of water supply duration parameters. Unlike other solenoid valve fully open or fully closed solutions, this example uses an electric actuator to control the size of the valve opening to adjust the amount of water flowing into the bypass water pipe, thereby controlling the water level in the drinking water pipe.

[0050] (1) The system identifies that the water level in a certain drinking water pipe is lower than the level sensor through polling; (2) The system determines whether the chicken house drinking water control is in the water cut-off, water change, or high-pressure cleaning stage. If it is not a special stage, find an electric actuator that matches the liquid level sensor at that location. (3) Intelligent judgment of whether the chickens are in the peak drinking period (when the lights are just turned on, when feeding is in progress, when feeding has just ended). If it is in the peak drinking period, the electric actuator is controlled to balance the water level in the water pipe. The electric actuator is opened gradually in 200 milliseconds, with a 10-second interval between each action. After the liquid level sensor detects that the liquid level is normal, the electric actuator is kept in the state. The full opening time of the electric actuator is 7000 milliseconds, and the maximum opening angle is limited to 3000 milliseconds to avoid the chickens being unable to peck at the drinking nipple due to excessive water pressure, thus preventing them from drinking. (4) The duration of different state judgments is determined, and the electric actuator is shut down in stages after the special state period is over. Step 4: Based on the liquid level sensor, pulse water meter, high-pressure cleaner, and electric actuator connected to the system, determine whether the drinking water pipe is blocked, and intelligently start the high-pressure cleaner to clean the drinking water pipe; (1) Outside of the special time periods mentioned above, if the system detects that the water pressure in an individual water pipe is too low, it will record the situation after the water pressure is restored by replenishing water. (2) After the lights are turned off, the flock will no longer feed or drink, and the system will automatically turn on the electric actuator corresponding to the recorded drinking pipe; (3) The system intelligently compares the pulse water meter data change rate after a single actuator is turned on in the database. If the rate is lower than the normal rate, it is determined that the water line may be blocked. (4) Add control of the high-pressure cleaner and use the high-pressure pulse gas output of the high-pressure cleaner to clean the water line; (5) The high-pressure cleaner is started periodically. During the air-filling interval of the high-pressure pulse machine air pump, the data change rate of the pulse water meter on the problematic drinking water line is compared with the normal rate. (6) If the data comparison matches the rate recorded in the database, the high-voltage pulse machine stops working, the electric actuator remains for 120 seconds to expel the gas remaining in the drinking pipe, and the drinking pipe cleaning is completed.

[0051] It should be noted that this embodiment provides a closed-loop control method for drinking water in caged poultry. By constructing a feedforward prediction model based on historical operating data, proactive predictive water replenishment is performed to accurately solve the problem of delayed drinking caused by lag in water supply response during the initial stage of lighting. This achieves precise synchronization between the water supply rhythm and the physiological needs of the poultry. Simultaneously, by employing an electric actuator with an adjustable opening angle combined with a staggered peak-time water replenishment strategy, water hammer impact and pipeline pressure imbalance caused by concurrent water replenishment are eliminated from both time and flow perspectives, ensuring the stable operation of the water supply system. During peak drinking periods... During this period, by integrating light signals and feeding status into a multi-factor judgment mechanism, the system accurately identifies the actual peak drinking times and replaces the traditional full-on / full-off step-by-step water replenishment with a step-by-step micro-incremental adjustment. This effectively avoids damage to poultry drinking behavior and pipeline equipment caused by sudden changes in water pressure while meeting peak water demand. In addition, by constructing a suspected fault screening mechanism based on water replenishment frequency thresholds and time windows during off-peak regular periods, and using pulse water meter data to quantitatively compare and diagnose the rate of change of idle flow during the poultry resting period, the system achieves intelligent closed-loop management of the entire drinking scenario for caged poultry.

[0052] Example 2 Please see Figure 2 This embodiment provides a closed-loop control system for drinking water in caged poultry to achieve intelligent and automated water supply management. Specifically, the system includes an acquisition module 100, a prediction module 200, and a control module 300.

[0053] The acquisition module 100 is used to acquire historical operating data of caged poultry houses. The historical operating data includes at least the lighting time and the water replenishment time of each watering line. Understandably, the acquisition module 100 serves as the data entry point for the system's interaction with the physical world. Its implementation can take the form of a data acquisition board integrating an ADC conversion circuit, a PLC input unit, or a data acquisition service program running on an edge computing gateway. In actual deployment, the acquisition module 100 connects to the field's photosensitive sensors and liquid level sensors via wired or wireless communication buses. It reads ambient light intensity changes in real time to mark the moment the lighting is turned on, and simultaneously records the time difference between the activation of the electric actuator and the feedback of a full water signal from the liquid level sensor, thereby accurately quantifying the water replenishment time for each drinking line. In other embodiments, the acquisition module 100 can also retrieve stored historical log data from the farm's existing ERP system or cloud platform via an API interface, as long as it can obtain basic data reflecting the temporal patterns of water supply demand.

[0054] The prediction module 200 is used to predict the next time the sunlight will be turned on, based on historical operating data.

[0055] Understandably, the prediction module 200 internally encapsulates time series analysis algorithms such as moving average, periodic matching, or weighted regression. This module can be represented as computer-readable instructions stored in non-volatile memory, loaded and executed by a processor; or it can be embedded as a dedicated FPGA logic circuit or ASIC chip to improve operational reliability in harsh electromagnetic environments. The prediction module 200 receives time series datasets from the acquisition module 100, and after cleaning and fitting, outputs a predicted value for the next lighting turn-on time with a confidence interval. For example, when a linear drift trend is detected in the recent lighting time, the prediction module 200 will automatically adjust the model parameters to adapt to seasonal changes, rather than mechanically using fixed timing values, which significantly reduces the long-term operation and maintenance costs of the system.

[0056] The control module 300 is used to start the pre-water replenishment program in advance according to the predicted next time the light will be turned on, so that the water supply line can be replenished before the light is turned on.

[0057] It should be noted that the control module 300 dynamically calculates the trigger time of the pre-water replenishment program based on the time point output by the prediction module 200 and the current status assessment of each water line, and sends a drive signal to the corresponding electric actuator. The form of the control signal can be a PWM pulse width modulation wave, a 0-10V analog voltage, or a digital communication command based on RS485 / CAN bus, depending on the type of actuator. In a preferred embodiment, the control module 300 also has a built-in safety interlock logic, that is, before issuing the water replenishment command, it will check whether the pipeline pressure is within the safe threshold to prevent false actions caused by sensor failure. Through this modular closed-loop architecture of perception-decision-execution, precise feedforward control of water supply timing is realized.

[0058] Furthermore, in order to support more comprehensive aquaculture management functions, such as Figure 3 As shown, this system can also include a water level monitoring module, a drinking water control module, and a water line flushing module as optional expansion components. The water level monitoring module has multiple liquid level sensors arranged vertically below it to sense the water level status of each cage in real time. The drinking water control module integrates a pulse water meter, a water temperature sensor, a photosensitive sensor, and various electric actuators such as main water supply, chemical dosing, and flushing, forming a refined fluid control unit. The water line flushing module is specifically used to drive high-pressure cleaning equipment, in conjunction with blockage diagnosis and self-cleaning logic.

[0059] It should be noted that this embodiment provides a closed-loop control system for caged poultry drinking water. Through the modular collaborative architecture of the acquisition module 100, prediction module 200, and control module 300, the traditional passive drinking water management that relies on human experience judgment is upgraded to a data-driven active feedforward control, solving the problem of delayed drinking water for poultry due to the lag in water supply response during the early stages of light exposure. At the same time, the modular design of the system also supports the flexible expansion of the water level monitoring module, drinking water control module, and water line flushing module, providing a unified hardware platform to support advanced functions such as constant pressure regulation during peak drinking periods, intelligent diagnosis of drinking pipe blockage, and closed-loop self-cleaning. This realizes intelligent closed-loop management of caged poultry drinking water in all scenarios, significantly reducing the dependence on manual intervention and improving breeding efficiency and equipment operation safety.

[0060] Example 3 This application also provides an electronic device, including a memory and a processor, wherein the memory stores computer-readable instructions, which, when executed by the processor, implement the closed-loop control method for drinking water for caged poultry according to Embodiment 1.

[0061] Specifically, this electronic device constitutes the general hardware carrier of the aforementioned control method. Its core lies in decoupling the intelligent logic of drinking water management from specific physical devices through software definition. At the hardware architecture level, the processor can be a general-purpose central processing unit (CPU), network processor (NP), digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. It is responsible for loading and executing computer-readable instructions stored in the memory to complete a series of computational and control tasks, such as historical data acquisition, illumination time prediction, pre-water replenishment program initiation, step-by-step constant pressure control, and blockage diagnosis and cleaning. The memory can include volatile memory (such as random access memory, RAM), non-volatile memory (such as flash memory, hard disk, solid-state drive, SSD), etc., used to persistently store historical operating data, prediction model parameters, control thresholds, and operating system and application code. In addition, the electronic device typically includes a communication interface and a bus. The communication interface is used to connect peripheral devices such as photosensitive sensors, liquid level sensors, electric actuators and high-pressure cleaners to realize data acquisition and control command issuance; the bus serves as a channel for information transmission between various components to ensure efficient collaboration within the system.

[0062] It should be understood that this application does not limit the specific deployment form of the electronic device. In a preferred embodiment, the electronic device can be integrated as a local intelligent control terminal in the poultry farm, directly installed on-site, and interacts with sensors and actuators in real time via wired or wireless local area networks. It features low latency and high reliability, making it suitable for step-by-step water replenishment control scenarios with extremely high response speed requirements. In another embodiment, the electronic device can also be an edge computing gateway deployed in the farm's computer room. It can aggregate data from multiple poultry houses for local optimization processing, reducing cloud bandwidth pressure while retaining cross-house coordination capabilities. In yet another embodiment, the electronic device can also be a cloud platform server located in a remote data center, utilizing its powerful computing resources to perform deep mining and model training on massive historical data, and then distributing the optimized control strategies to front-end devices. This is suitable for centralized management and big data analysis in large-scale poultry farming enterprises. Even in some simplified scenarios, the core functional modules of the electronic device can be embedded in an industrial-grade programmable logic controller (PLC) to adapt to harsh electromagnetic environments and long-term maintenance-free requirements. Regardless of the hardware form factor, as long as its processor can execute the computer-readable instructions stored in this application to implement the technical solution of any of the foregoing method embodiments, it falls within the protection scope of this application.

[0063] Furthermore, the computer-readable instructions involved in this application can be stored in various types of computer-readable storage media, including but not limited to disks, optical disks, semiconductor memories, such as floppy disks, hard disks, magnetic tapes, CD-ROMs, DVD-ROMs, USB flash drives, portable hard disks, ROMs, EEPROMs, Flash Memory, etc. When these storage media are loaded into the aforementioned electronic devices and run by the processor, the closed-loop control method for drinking water for caged poultry in this application can also be realized.

[0064] To more intuitively demonstrate the synergistic operation effect of the aforementioned embodiments in actual production, this embodiment provides a comprehensive application scenario for all-weather drinking water management in large-scale chicken houses: In this scenario, the target is a modern laying hen house with a capacity of 100,000 birds, using a 6-layer stacked cage system, and is operating under high temperature and humidity conditions in summer. This places extremely high demands on the response speed, pressure stability, and water freshness of the drinking water system.

[0065] During the early morning hours, the system mainly executes a pre-watering program driven by historical data. The intelligent control terminal continuously acquires data on the lighting time of the chicken house and the watering time of each drinking line over the past 30 days. For example, the system records show that the daily light-on time has been stable at 05:00 recently, and the average total time to fill all 6 water lines is 15 minutes. Based on this historical operating data, the prediction module 200 determines that the light-on time the next day will still be 05:00. The control module then automatically calculates backwards and starts the pre-water replenishment program in advance at 04:45. During the execution, the system sequentially activates the corresponding adjustable opening angle electric actuators according to the historical time of each water line to fill each water line one by one, avoiding the pressure loss at the end of the pipeline caused by multiple valves opening at the same time. Through this proactive feedforward control, it is ensured that when the lights turn on on time at 05:00 and the flock begins to move, all water lines are already full and ready to drink, eliminating the water supply lag blind spot in the traditional liquid level trigger mode, so that the flock can get enough drinking water as soon as they wake up, effectively ensuring the physiological needs of the peak egg production period.

[0066] During the morning peak feeding period, with the activation of lighting and the start of the feeding cart, the chickens' water demand surges. At this time, the system switches to a step-by-step constant pressure water replenishment mode. When the level sensor detects that the water level of a certain layer is rapidly dropping due to concentrated pecking, the system first compares the current system time with preset lighting activation and feeding in progress events to accurately determine that the current period is the peak drinking period. Subsequently, the control module 300 no longer uses the crude method of fully opening the valve, but instead activates the electric actuator in steps with 200 milliseconds as the action unit. After each action, the water level is checked for recovery status after 10 seconds until the water level is normal, and the current opening degree is maintained. The maximum opening angle is strictly limited within the safety threshold corresponding to the 3000 millisecond stroke. During this dynamic adjustment process, the pipeline pressure is always maintained in a stable range, which not only meets the chickens' instantaneous large drinking demand, but also effectively prevents the chickens from refusing to drink or getting wet due to excessive water flow from the nipples caused by a sudden increase in water pressure. This significantly improves drinking comfort and feed conversion rate.

[0067] As a further preferred implementation, this scenario includes a midday high-temperature water exchange function for high-temperature conditions in summer. When the water temperature sensor detects that the water temperature in the pipe exceeds the preset high-temperature threshold (e.g., 28°C), the system automatically triggers the water exchange logic: First, the actuator of the water line closest to the inlet is opened. After the water temperature at the end of the water line drops to a suitable range, the subsequent water lines are opened sequentially according to the pre-recorded water replenishment time. The newly injected low-temperature water gradually pushes out the high-temperature water accumulated in the pipe. This process makes full use of the specific heat capacity of water, which not only provides cool drinking water for the chickens to alleviate heat stress and maintain feed intake, but also removes the biofilm on the pipe wall through water flow replacement, playing an auxiliary cleaning role.

[0068] During the resting period after lights out at night, the system transitions to equipment health management and self-healing. In the late-night window, which is neither pre-watering nor during peak drinking times, the system automatically screens water lines that frequently trigger water replenishment again shortly after daytime watering and marks them as potential targets for diagnosis. Subsequently, during the period when the flock is completely resting, the system activates the electric actuators of suspected blocked water lines to conduct no-load flow tests. If the rate of flow change is detected to be lower than the normal threshold, it is confirmed that the blockage is caused by biofilm or impurities. After diagnosis, the system immediately activates the high-pressure washer to output high-pressure pulsed gas for targeted cleaning and monitors the flow recovery in real time during cleaning intervals. Once the flow rate reaches the target, the cleaning is automatically stopped and the valve is closed. The entire diagnosis and repair process is unattended, which avoids disturbing the flock during nighttime manual inspections and eliminates the fault in its early stages, ensuring zero-defect operation of the water supply system the next day.

[0069] It should be noted that in this embodiment, the acquisition module 100, prediction module 200, and control module 300 respectively perform multiple functions such as time-series prediction, flexible pressure regulation, thermal management, and fault self-healing at different times. These functions switch and coordinate based on the timeline and event triggering conditions. This all-weather, multi-dimensional closed-loop management mechanism can significantly reduce water waste, equipment wear and tear, and labor maintenance costs while ensuring the drinking water welfare of large-scale aquaculture groups.

[0070] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application 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 so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0071] The technical features described above can be combined arbitrarily. Although not all possible combinations of these technical features are described, any combination of these technical features should be considered to be covered by this specification, provided that such combination does not contain contradictions.

[0072] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A closed-loop control method for drinking water in caged poultry, characterized in that, include: S100. Obtain historical operating data of the caged poultry house, wherein the historical operating data includes at least the lighting time and the water replenishment time of each watering line; S200. Based on the historical operating data, predict the next time the sunlight will be turned on; S300. Based on the predicted next light-on time, start the pre-water replenishment program in advance so that the water supply line can be replenished before the light is turned on.

2. The closed-loop control method for drinking water in caged poultry according to claim 1, characterized in that, The pre-water replenishment procedure includes: Based on the water replenishment time of each water line, the actuators corresponding to each water line are activated sequentially to replenish the water lines one by one.

3. The closed-loop control method for drinking water in caged poultry according to claim 2, characterized in that, The actuator is an electric actuator with an adjustable opening angle.

4. The closed-loop control method for drinking water in caged poultry according to claim 3, characterized in that, The method further includes: During periods outside of the pre-replenishment water program, when a drop in the water level of any drinking water line is detected, it is determined whether the current period is a peak drinking water period. If so, the opening angle of the electric actuator corresponding to the water supply line is gradually increased in a step-by-step manner, and the current opening angle of the electric actuator is maintained after the water level is detected to return to normal.

5. The closed-loop control method for drinking water in caged poultry according to claim 4, characterized in that, The method of gradually increasing the opening angle of the electric actuator corresponding to the water supply line in a stepwise manner includes: The electric actuator is activated in a stepwise manner, with a first preset duration as the action unit; After each action, wait a second preset time interval to obtain the water level recovery status; The fully open operation time of the electric actuator is set to a third preset time, and the maximum opening angle is set to correspond to a fourth preset time. The fourth preset time is less than the third preset time required for the fully open operation of the electric actuator.

6. The closed-loop control method for drinking water in caged poultry according to claim 4, characterized in that, The method for determining whether the current period is a peak drinking water period includes: Obtain the current system time, as well as the recorded lighting on time and key status events determined by the preset feeding plan; The key status events include at least: light-on event, feeding in progress event, and feeding end event; When the system time matches the occurrence time or duration of any of the key state events, it is determined that the current period is the peak drinking water period.

7. The closed-loop control method for drinking water in caged poultry according to claim 4, characterized in that, The method further includes: During periods when there is no pre-replenishment procedure and no peak drinking water period, determine whether the water level drops again and triggers replenishment within a preset time window after the water level of the drinking water line is restored by the replenishment action, and whether the frequency of occurrence reaches a preset threshold. If so, mark the drinking water line as a water line to be diagnosed. During the preset resting period of the poultry flock, the electric actuator corresponding to the waterline to be diagnosed is turned on, and the flow rate data in the flow path of the waterline to be diagnosed is acquired. The rate of change of the flow data is compared with a preset normal rate threshold. If the rate of change is less than the normal rate threshold, it is determined that the water line to be diagnosed is blocked.

8. The closed-loop control method for drinking water in caged poultry according to claim 7, characterized in that, After determining that the water line to be diagnosed is blocked, the method includes: Start the high-pressure cleaner to clean the high-pressure pulse gas output from the water line to be diagnosed; During the cleaning process, the rate of change of the pulse water meter data is compared again at preset intervals. If the rate of change is greater than or equal to the normal rate threshold, the cleaning is stopped and the corresponding electric actuator is turned off. Otherwise, the high-pressure cleaner is restarted for cleaning until the rate of change returns to being greater than or equal to the normal rate threshold, at which point the cleaning is stopped and the corresponding electric actuator is turned off.

9. A closed-loop control system for drinking water in caged poultry, characterized in that, include: Acquisition module: used to acquire historical operating data of caged poultry houses, including at least the lighting time and the water replenishment time of each watering line; Prediction module: used to predict the next time sunlight will be turned on based on the historical operating data; Control module: Used to start the pre-water replenishment program in advance based on the predicted next time the light will be turned on, so that the water supply line can be replenished before the light is turned on.

10. An electronic device, characterized in that, include: Memory; The processor, wherein the memory stores computer-readable instructions that, when executed by the processor, implement the closed-loop control method for drinking water for caged poultry according to any one of claims 1 to 8.

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