Intelligent fish tank culture control system based on PLC

Abstract

The invention relates to the technical field of aquaculture intellectualization, and discloses an intelligent fish tank aquaculture control system based on a PLC (Programmable Logic Controller), comprising a fish tank body which is provided with a temperature adjusting device, a water supplementing device, a circulating filtering device, an oxygenation device, an illumination device and a feeding device; the data acquisition unit is used for acquiring a water temperature value, a pH value, a dissolved oxygen concentration value and a water level value in the fish tank body in real time and acquiring an environment temperature value outside the fish tank body in real time; the PLC central control unit is respectively connected with the data acquisition unit, the temperature adjusting device, the water supplementing device, the circulating filtering device, the oxygenation device, the illumination device and the feeding device; and the alarm unit is used for receiving the alarm instruction and executing alarm operation. According to the system, all data are uniformly processed through the PLC, all execution devices are coordinated, high intelligence of the whole system and collaboration among the devices are achieved, and the automation level of fish tank management is fundamentally improved.

Description

Technical Field

[0001] This invention relates to the field of intelligent aquaculture technology, and more specifically, to a PLC-based intelligent aquarium aquaculture control system. Background Technology

[0002] With the increasing popularity of home and ornamental aquaculture, maintaining the stability of aquarium ecosystems has become a challenge. Traditional manual management methods suffer from reliance on experience, low control precision, and delayed response. Most existing automated equipment on the market are single-function, standalone devices, such as automatic feeders and thermostats, lacking systematic coordination and interconnected control. For example, subsystems such as feeding and filtration, lighting and temperature, and aeration and circulation cannot intelligently coordinate, resulting in low management efficiency, high energy consumption, and an inability to simulate natural ecological environments, effectively addressing the impact of indoor and outdoor environmental changes on the aquarium's microclimate. Furthermore, abnormal warnings for water quality parameters (such as pH and dissolved oxygen) are often delayed, posing risks to aquaculture.

[0003] Although PLC technology has been considered for application in the field of automation control due to its high reliability and powerful logic control capabilities, in the aquarium breeding scenario, the control strategies of existing solutions are usually relatively simple, mostly single-point switch control, which fails to fully utilize the potential of PLC to achieve intelligent management with multi-parameter coupling, self-adaptation, and collaborative optimization.

[0004] Therefore, it is necessary to provide a PLC-based intelligent aquarium aquaculture control system to solve the problems of lack of multi-parameter coupling and lack of synergy between various actuators in the current technology. Summary of the Invention

[0005] In view of this, the present invention proposes a PLC-based intelligent aquarium aquaculture control system, which aims to solve the problems of lack of multi-parameter coupling and lack of synergy between various actuators in the current technology.

[0006] This invention proposes a PLC-based intelligent aquarium aquaculture control system, comprising: The aquarium body is equipped with a temperature control device, a water supply device, a circulating filter device, an oxygenation device, a lighting device, and a feeding device. The data acquisition unit is used to collect the water temperature, pH value, dissolved oxygen concentration and water level inside the aquarium in real time, as well as the ambient temperature outside the aquarium in real time. The PLC central control unit is connected to the data acquisition unit, temperature regulation device, water replenishment device, circulating filtration device, oxygenation device, lighting device, and feeding device, respectively; wherein... The PLC central control unit is used to acquire water temperature, ambient temperature, pH, dissolved oxygen concentration, and water level values ​​collected by the data acquisition unit, and to determine whether the pH and water level values ​​are abnormal. If an abnormality is detected in either the pH or water level value, an alarm command is generated. The PLC central control unit is also used to control the temperature regulation device based on the water temperature and ambient temperature values. Furthermore, the PLC central control unit is used to pre-set simulated sunrise and sunset light curves, and to dynamically adjust the lighting device based on these curves, while also adjusting the lighting of the device in conjunction with the water temperature and ambient temperature values. The intensity is corrected; the PLC central control unit is also used to preset feeding time and feeding amount parameters, and when the feeding time is reached, control the feeding device to perform feeding operation based on the feeding amount parameters; the PLC central control unit is also used to adjust the operating power of the circulating filtration device based on the feeding time, and obtain the operating power value of the circulating filtration device in real time; the PLC central control unit is also used to control the aeration device based on the dissolved oxygen concentration value, and dynamically adjust the aeration device in combination with the operating power value; the PLC central control unit is also used to control the water replenishment device based on the water level value; An alarm unit is connected to the PLC central control unit. The alarm unit is used to receive the alarm command and execute the alarm operation.

[0007] Furthermore, the PLC central control unit is used to determine whether the pH value and water level value are abnormal. When it is determined that either the pH value or the water level value is abnormal, the alarm command generated includes: The PLC central control unit is set with a preset first pH threshold, a preset second pH threshold, and a preset first water level threshold; wherein... The preset first pH threshold is greater than the preset second pH threshold; When the pH value is greater than the preset first pH threshold, it is determined that the pH value is abnormal; When the pH value is less than the preset second pH threshold, it is determined that the pH value is abnormal; When the water level value is greater than the preset first water level threshold, it is determined that the water level value is abnormal. When either the pH value or the water level value is abnormal, the PLC central control unit generates an alarm command.

[0008] Furthermore, when the PLC central control unit is used to control the temperature regulating device based on the water temperature value and the ambient temperature value, it includes: The PLC central control unit is set with a preset first water temperature threshold and a preset second water temperature threshold; wherein... The preset first water temperature threshold is greater than the preset second water temperature threshold; When the water temperature value is greater than the first water temperature threshold, the PLC central control unit controls the temperature regulating device to heat the water in the fish tank. When the water temperature value is less than the second water temperature threshold, the PLC central control unit controls the temperature regulation device to cool the water in the fish tank. The PLC central control unit is also used to dynamically adjust the temperature regulation device based on the ambient temperature value.

[0009] Furthermore, the PLC central control unit is also used to dynamically adjust the temperature control device in conjunction with the ambient temperature value, including: The PLC central control unit sets a first preset water temperature reference value, a second preset water temperature reference value, a third preset water temperature reference value, a fourth preset water temperature reference value, a fifth preset water temperature reference value, a first preset temperature difference threshold, and a second preset temperature difference threshold; wherein... The preset first water temperature threshold > preset first water temperature reference value > preset second water temperature reference value > preset third water temperature reference value > preset fourth water temperature reference value > preset fifth water temperature reference value > preset second water temperature threshold, and the preset first temperature difference threshold > preset second temperature difference threshold. The temperature regulating device is dynamically adjusted based on the relationship between the ambient temperature value and preset first and second water temperature thresholds; wherein... When the preset second water temperature threshold is ≤ ambient temperature value ≤ preset first water temperature threshold, the temperature regulation device will not be dynamically adjusted. When the ambient temperature value is greater than a preset first water temperature threshold, the difference between the ambient temperature value and the water temperature value is calculated, and this difference is used as the temperature difference value. Based on the relationship between the temperature difference value and the preset first temperature difference threshold and the preset second temperature difference threshold, the temperature regulating device is dynamically adjusted; wherein... When the temperature difference value is greater than the preset first temperature difference threshold, the temperature regulating device is controlled to adjust the water temperature in the aquarium body to meet the following condition: the preset second water temperature threshold < water temperature value ≤ preset fifth water temperature reference value. When the preset second temperature difference threshold ≤ temperature difference value ≤ preset first temperature difference threshold is satisfied, the temperature adjustment device is controlled to adjust the water temperature in the aquarium body to satisfy: the preset fifth water temperature reference value < water temperature value ≤ preset fourth water temperature reference value; When the temperature difference value is less than the preset second temperature difference threshold, the temperature regulating device is controlled to adjust the water temperature in the aquarium body to meet the following: the preset fourth water temperature reference value < water temperature value ≤ preset third water temperature reference value. When the ambient temperature value is less than a preset second water temperature threshold, the absolute value of the difference between the ambient temperature value and the water temperature value is calculated, and this absolute value is used as the absolute temperature difference value. Based on the relationship between the absolute temperature difference value and the preset first and second temperature difference thresholds, the temperature regulating device is dynamically adjusted. When the absolute temperature difference value is less than the preset second temperature difference threshold, the temperature regulating device is controlled to adjust the water temperature in the aquarium body to meet the following condition: the preset third water temperature reference value is less than the water temperature value and ≤ the preset second water temperature reference value. When the preset second temperature difference threshold ≤ absolute temperature difference value ≤ preset first temperature difference threshold is satisfied, the temperature adjustment device is controlled to adjust the water temperature in the aquarium body to satisfy: the preset second water temperature reference value < water temperature value ≤ preset first water temperature reference value; When the absolute temperature difference value is greater than the preset first temperature difference threshold, the temperature regulating device is controlled to adjust the water temperature in the aquarium body to meet the following condition: the preset first water temperature reference value < water temperature value ≤ preset first water temperature threshold.

[0010] Furthermore, the PLC central control unit is also used to pre-set simulated sunrise and sunset light curves, and dynamically adjust the lighting device based on the simulated sunrise and sunset light curves. When correcting the light intensity of the lighting device by combining the water temperature value and the ambient temperature value, the following steps are included: The PLC central control unit controls the illumination device to fit the simulated sunrise and sunset illumination curve, and obtains the illumination intensity value of the illumination device in real time under the simulated sunrise and sunset illumination curve. Set preset first correction coefficient, preset second correction coefficient, preset third correction coefficient, preset fourth correction coefficient, preset fifth correction coefficient, and preset sixth correction coefficient; among which, The formula is: 0.8 < preset sixth correction coefficient < preset fifth correction coefficient < preset fourth correction coefficient < 1 < preset third correction coefficient < preset second correction coefficient < preset first correction coefficient < 1.2; The light intensity value is corrected based on the relationship between the ambient temperature value and preset first and second water temperature thresholds; wherein... When the preset second water temperature threshold is ≤ ambient temperature value ≤ preset first water temperature threshold, the light intensity value is not corrected; When the ambient temperature value is greater than a preset first water temperature threshold, the light intensity value is corrected based on the relationship between the temperature difference value and the preset first temperature difference threshold and the preset second temperature difference threshold; wherein... When the temperature difference value is greater than the preset first temperature difference threshold, a preset sixth correction coefficient is selected to correct the light intensity value, and the product of the preset sixth correction coefficient and the light intensity value is used as the light intensity correction value. When the preset second temperature difference threshold ≤ temperature difference value ≤ preset first temperature difference threshold is met, a preset fifth correction coefficient is selected to correct the light intensity value, and the product of the preset fifth correction coefficient and the light intensity value is used as the light intensity correction value; When the temperature difference value is less than the preset second temperature difference threshold, a preset fourth correction coefficient is selected to correct the light intensity value, and the product of the preset fourth correction coefficient and the light intensity value is used as the light intensity correction value. When the ambient temperature value is less than a preset second water temperature threshold, the light intensity value is corrected based on the relationship between the absolute temperature difference value and the preset first and second temperature difference thresholds; wherein... When the absolute temperature difference value is less than the preset second temperature difference threshold, a preset third correction coefficient is selected to correct the light intensity value, and the product of the preset third correction coefficient and the light intensity value is used as the light intensity correction value. When the preset second temperature difference threshold ≤ absolute temperature difference value ≤ preset first temperature difference threshold is satisfied, a preset second correction coefficient is selected to correct the light intensity value, and the product of the preset second correction coefficient and the light intensity value is used as the light intensity correction value. When the absolute temperature difference value is greater than the preset first temperature difference threshold, a preset first correction coefficient is selected to correct the light intensity value, and the product of the preset first correction coefficient and the light intensity value is used as the light intensity correction value.

[0011] Furthermore, when the PLC central control unit is used to adjust the operating power of the circulating filtration device based on the feeding time, it includes: The circulating filter device is paused for a first preset duration before the feeding time and a second preset duration after the feeding time. Within a third preset time period following the end of the second preset time period, the circulating filtration device is activated, and its operating power is gradually increased to a preset peak operating power value based on a preset first standard power value, and then gradually decreased to the preset first standard power value based on a preset gradient; wherein... The preset peak operating power value is less than the operating power threshold of the circulating filtration device.

[0012] Furthermore, the PLC central control unit is also used to control the oxygenation device based on the dissolved oxygen concentration value, including: Set a preset first dissolved oxygen concentration threshold and a preset second dissolved oxygen concentration threshold, and set a preset second standard power value and a preset oxygenation power value for the operation of the aeration device; wherein, The preset first dissolved oxygen concentration threshold is greater than the preset second dissolved oxygen concentration threshold, and the preset oxygenation power value is greater than the preset second standard power value; The oxygenation device is controlled based on the relationship between the dissolved oxygen concentration value and preset first and second dissolved oxygen concentration thresholds; wherein... When the dissolved oxygen concentration value is greater than the preset first dissolved oxygen concentration threshold, the oxygenation device is paused. When the preset second dissolved oxygen concentration threshold is ≤ dissolved oxygen concentration value ≤ preset first dissolved oxygen concentration threshold, the oxygenation device is controlled to operate at a preset second standard power value; When the dissolved oxygen concentration value is less than the preset second dissolved oxygen concentration threshold, the oxygenation device is controlled to operate at the preset oxygenation power value.

[0013] Furthermore, the PLC central control unit is also used to dynamically adjust the oxygenation device in conjunction with the operating power value of the circulating filtration device, including: Set a preset operating power reference value, and set preset first power correction coefficient, preset second power correction coefficient, and preset third power correction coefficient; wherein... The preset first standard power value < preset operating power reference value < preset peak operating power value, 0.8 < preset third power correction coefficient < preset second power correction coefficient < 1 < preset first power correction coefficient < 1.2; Based on the relationship between the operating power value of the circulating filtration device and the preset first standard power value, the preset operating power reference value, and the preset peak operating power value, the preset oxygenation power value and the preset second standard power value of the oxygenation device are corrected; wherein... When the operating power value of the circulating filtration device satisfies the condition that the operating power value is less than the preset first standard power value, a preset first power correction coefficient is selected to correct the preset oxygenation power value and the preset second standard power value of the oxygenation device, and the product of the preset first power correction coefficient and the preset oxygenation power value is used as the preset oxygenation power correction value, and the product of the preset first power correction coefficient and the preset second standard power value is used as the preset second standard power correction value. When the operating power value of the circulating filtration device satisfies the following condition: the preset first standard power value ≤ operating power value ≤ preset operating power reference value, a preset second power correction coefficient is selected to correct the preset oxygenation power value and the preset second standard power value of the oxygenation device, and the product of the preset second power correction coefficient and the preset oxygenation power value is used as the preset oxygenation power correction value, and the product of the preset second power correction coefficient and the preset second standard power value is used as the preset second standard power correction value; When the operating power value of the circulating filtration device satisfies the following condition: the preset operating power reference value < operating power value < preset peak operating power value, a preset third power correction coefficient is selected to correct the preset oxygenation power value and the preset second standard power value of the oxygenation device, and the product of the preset third power correction coefficient and the preset oxygenation power value is used as the preset oxygenation power correction value, and the product of the preset third power correction coefficient and the preset second standard power value is used as the preset second standard power correction value.

[0014] Furthermore, when the PLC central control unit is used to control the water replenishment device based on the water level value, it includes: Set a preset second water level threshold and a preset water level reference value; wherein, The preset second water level threshold is less than the preset water level reference value and less than the preset first water level threshold. The start and stop of the water replenishment device are controlled based on the relationship between the water level value and the preset second water level threshold, the preset water level reference value, and the preset first water level threshold; wherein... When the water level value is less than the preset second water level threshold, the water replenishment device is activated; When the water level value is greater than the preset water level reference value, the water replenishment device is paused.

[0015] Furthermore, the PLC-based intelligent aquarium aquaculture control system also includes: The human-machine interface unit is connected to the PLC central control unit via signals, and is used for parameter setting and status display.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: First, by using PLC for unified control, the system achieves fully automated management of core aquaculture processes such as water temperature, pH, dissolved oxygen, water level, light, and feeding, significantly reducing the need for manual intervention and the professional knowledge threshold.

[0017] Second, it breaks through the limitation of independent operation of each actuator, realizes intelligent linkage and power coupling between multiple subsystems such as feeding and filtration, lighting and temperature, oxygenation and filtration, and improves overall management efficiency and energy utilization efficiency.

[0018] Third, by simulating sunrise and sunset light curves and combining them with dynamic temperature correction, the system provides aquatic organisms with a more natural and healthier light and heat environment rhythm. Furthermore, the system can sense changes in external ambient temperature and dynamically adjust water temperature control targets and light intensity accordingly, enhancing the system's robustness to external disturbances and providing a more stable microclimate for the aquarium. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A functional block diagram of a PLC-based intelligent aquarium aquaculture control system provided in an embodiment of the present invention; Detailed Implementation

[0020] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] In some embodiments of this application, see Figure 1 As shown, this embodiment provides a PLC-based intelligent aquarium aquaculture control system, including: The aquarium body is equipped with a temperature control device, a water supply device, a circulating filter device, an oxygenation device, a lighting device, and a feeding device. The data acquisition unit is used to collect the water temperature, pH value, dissolved oxygen concentration and water level inside the aquarium in real time, as well as the ambient temperature outside the aquarium in real time. The data acquisition unit includes a water temperature sensor, a pH sensor, a dissolved oxygen sensor, a water level sensor, and an ambient temperature sensor, which respectively collect the real-time water temperature, pH value, dissolved oxygen concentration, and water level value inside the aquarium, as well as the real-time ambient temperature value outside the aquarium. The PLC central control unit is connected to the data acquisition unit, temperature regulation device, water replenishment device, circulating filtration device, oxygenation device, lighting device, and feeding device, respectively; wherein... The PLC central control unit is used to acquire water temperature, ambient temperature, pH, dissolved oxygen concentration, and water level values ​​collected by the data acquisition unit, and to determine whether the pH and water level values ​​are abnormal. If an abnormality is detected in either the pH or water level value, an alarm command is generated. The PLC central control unit is also used to control the temperature regulation device based on the water temperature and ambient temperature values. Furthermore, the PLC central control unit is used to pre-set simulated sunrise and sunset light curves, and to dynamically adjust the lighting device based on these curves, while also adjusting the lighting of the device in conjunction with the water temperature and ambient temperature values. The intensity is corrected; the PLC central control unit is also used to preset feeding time and feeding amount parameters, and when the feeding time is reached, control the feeding device to perform feeding operation based on the feeding amount parameters; the PLC central control unit is also used to adjust the operating power of the circulating filtration device based on the feeding time, and obtain the operating power value of the circulating filtration device in real time; the PLC central control unit is also used to control the aeration device based on the dissolved oxygen concentration value, and dynamically adjust the aeration device in combination with the operating power value; the PLC central control unit is also used to control the water replenishment device based on the water level value; An alarm unit is connected to the PLC central control unit. The alarm unit is used to receive the alarm command and execute the alarm operation.

[0022] Understandably, by using a PLC to uniformly process all sensor data and coordinate all actuators for temperature regulation, water replenishment, filtration, oxygenation, lighting, and feeding operations, a complete closed loop from data acquisition to execution feedback is achieved. Advanced control strategies, such as dynamically adjusting water temperature based on ambient temperature, simulating sunrise and sunset light curves and correcting for temperature variations, adjusting the filtration system in conjunction with feeding behavior, and adjusting oxygenation based on dissolved oxygen and filtration power, demonstrate the system's high level of intelligence and the synergy between its subsystems. This fundamentally improves the automation level of aquarium management and the realism of ecological simulation.

[0023] In some embodiments of this application, the PLC central control unit is used to determine whether the pH value and water level value are abnormal. When it is determined that either the pH value or the water level value is abnormal, the alarm command generated includes: The PLC central control unit is set with a preset first pH threshold, a preset second pH threshold, and a preset first water level threshold; wherein... The preset first pH threshold is greater than the preset second pH threshold; When the pH value is greater than the preset first pH threshold, it is determined that the pH value is abnormal; When the pH value is less than the preset second pH threshold, it is determined that the pH value is abnormal; When the water level value is greater than the preset first water level threshold, it is determined that the water level value is abnormal. When either the pH value or the water level value is abnormal, the PLC central control unit generates an alarm command.

[0024] Specifically, the generated alarm command controls the alarm unit to activate an audible and visual alarm upon receiving the command.

[0025] Understandably, the system provides dual-threshold alarms for pH and a threshold alarm mechanism to prevent water level overflow. This allows for timely detection of dangerous situations such as excessive acidification or alkalization of the water and excessively high water levels. It provides immediate and clear early warnings for emergencies that may endanger the survival of fish, ensuring aquaculture safety and preventing losses due to sudden changes in water quality or equipment failure.

[0026] In some embodiments of this application, when the PLC central control unit is further configured to control the temperature regulating device based on the water temperature value and the ambient temperature value, it includes: The PLC central control unit is set with a preset first water temperature threshold and a preset second water temperature threshold; wherein... The preset first water temperature threshold is greater than the preset second water temperature threshold; When the water temperature value is greater than the first water temperature threshold, the PLC central control unit controls the temperature regulating device to heat the water in the fish tank. When the water temperature value is less than the second water temperature threshold, the PLC central control unit controls the temperature regulation device to cool the water in the fish tank. The PLC central control unit is also used to dynamically adjust the temperature regulation device based on the ambient temperature value.

[0027] Understandably, this system achieves automatic temperature control, ensuring the fish always live within a preset, suitable temperature range. It also incorporates ambient temperature as a reference for adjustment, allowing the system to monitor not only the tank temperature but also changes in the external environment.

[0028] In some embodiments of this application, the PLC central control unit is further configured to dynamically adjust the temperature regulating device in conjunction with the ambient temperature value, including: The PLC central control unit sets a first preset water temperature reference value, a second preset water temperature reference value, a third preset water temperature reference value, a fourth preset water temperature reference value, a fifth preset water temperature reference value, a first preset temperature difference threshold, and a second preset temperature difference threshold; wherein... The preset first water temperature threshold > preset first water temperature reference value > preset second water temperature reference value > preset third water temperature reference value > preset fourth water temperature reference value > preset fifth water temperature reference value > preset second water temperature threshold, and the preset first temperature difference threshold > preset second temperature difference threshold. The temperature regulating device is dynamically adjusted based on the relationship between the ambient temperature value and preset first and second water temperature thresholds; wherein... When the preset second water temperature threshold is ≤ ambient temperature value ≤ preset first water temperature threshold, the temperature regulation device will not be dynamically adjusted. When the ambient temperature value is greater than a preset first water temperature threshold, the difference between the ambient temperature value and the water temperature value is calculated, and this difference is used as the temperature difference value. Based on the relationship between the temperature difference value and the preset first temperature difference threshold and the preset second temperature difference threshold, the temperature regulating device is dynamically adjusted; wherein... When the temperature difference value is greater than the preset first temperature difference threshold, the temperature regulating device is controlled to adjust the water temperature in the aquarium body to meet the following condition: the preset second water temperature threshold < water temperature value ≤ preset fifth water temperature reference value. When the preset second temperature difference threshold ≤ temperature difference value ≤ preset first temperature difference threshold is satisfied, the temperature adjustment device is controlled to adjust the water temperature in the aquarium body to satisfy: the preset fifth water temperature reference value < water temperature value ≤ preset fourth water temperature reference value; When the temperature difference value is less than the preset second temperature difference threshold, the temperature regulating device is controlled to adjust the water temperature in the aquarium body to meet the following: the preset fourth water temperature reference value < water temperature value ≤ preset third water temperature reference value. When the ambient temperature value is less than a preset second water temperature threshold, the absolute value of the difference between the ambient temperature value and the water temperature value is calculated, and this absolute value is used as the absolute temperature difference value. Based on the relationship between the absolute temperature difference value and the preset first and second temperature difference thresholds, the temperature regulating device is dynamically adjusted. When the absolute temperature difference value is less than the preset second temperature difference threshold, the temperature regulating device is controlled to adjust the water temperature in the aquarium body to meet the following condition: the preset third water temperature reference value is less than the water temperature value and ≤ the preset second water temperature reference value. When the preset second temperature difference threshold ≤ absolute temperature difference value ≤ preset first temperature difference threshold is satisfied, the temperature adjustment device is controlled to adjust the water temperature in the aquarium body to satisfy: the preset second water temperature reference value < water temperature value ≤ preset first water temperature reference value; When the absolute temperature difference value is greater than the preset first temperature difference threshold, the temperature regulating device is controlled to adjust the water temperature in the aquarium body to meet the following condition: the preset first water temperature reference value < water temperature value ≤ preset first water temperature threshold.

[0029] Understandably, when the difference between the external environment (too cold or too hot) and the target water temperature is significant, the system will set different water temperature control targets in a step-by-step manner. This avoids drastic and energy-consuming temperature regulation due to excessive environmental temperature differences, and instead adopts a gentler, gradual transition target. This protects the fish from sudden temperature changes (heat stress / cold stress) and is more energy-efficient, demonstrating the rationality and economy of the control strategy.

[0030] In some embodiments of this application, the PLC central control unit is further configured to pre-set simulated sunrise and sunset illumination curves, dynamically adjust the illumination device based on the simulated sunrise and sunset illumination curves, and correct the illumination intensity of the illumination device in conjunction with the water temperature value and the ambient temperature value, including: The PLC central control unit controls the illumination device to fit the simulated sunrise and sunset illumination curve, and obtains the illumination intensity value of the illumination device in real time under the simulated sunrise and sunset illumination curve. Set preset first correction coefficient, preset second correction coefficient, preset third correction coefficient, preset fourth correction coefficient, preset fifth correction coefficient, and preset sixth correction coefficient; among which, The formula is: 0.8 < preset sixth correction coefficient < preset fifth correction coefficient < preset fourth correction coefficient < 1 < preset third correction coefficient < preset second correction coefficient < preset first correction coefficient < 1.2; The light intensity value is corrected based on the relationship between the ambient temperature value and preset first and second water temperature thresholds; wherein... When the preset second water temperature threshold is ≤ ambient temperature value ≤ preset first water temperature threshold, the light intensity value is not corrected; When the ambient temperature value is greater than a preset first water temperature threshold, the light intensity value is corrected based on the relationship between the temperature difference value and the preset first temperature difference threshold and the preset second temperature difference threshold; wherein... When the temperature difference value is greater than the preset first temperature difference threshold, a preset sixth correction coefficient is selected to correct the light intensity value, and the product of the preset sixth correction coefficient and the light intensity value is used as the light intensity correction value. When the preset second temperature difference threshold ≤ temperature difference value ≤ preset first temperature difference threshold is met, a preset fifth correction coefficient is selected to correct the light intensity value, and the product of the preset fifth correction coefficient and the light intensity value is used as the light intensity correction value; When the temperature difference value is less than the preset second temperature difference threshold, a preset fourth correction coefficient is selected to correct the light intensity value, and the product of the preset fourth correction coefficient and the light intensity value is used as the light intensity correction value. When the ambient temperature value is less than a preset second water temperature threshold, the light intensity value is corrected based on the relationship between the absolute temperature difference value and the preset first and second temperature difference thresholds; wherein... When the absolute temperature difference value is less than the preset second temperature difference threshold, a preset third correction coefficient is selected to correct the light intensity value, and the product of the preset third correction coefficient and the light intensity value is used as the light intensity correction value. When the preset second temperature difference threshold ≤ absolute temperature difference value ≤ preset first temperature difference threshold is satisfied, a preset second correction coefficient is selected to correct the light intensity value, and the product of the preset second correction coefficient and the light intensity value is used as the light intensity correction value. When the absolute temperature difference value is greater than the preset first temperature difference threshold, a preset first correction coefficient is selected to correct the light intensity value, and the product of the preset first correction coefficient and the light intensity value is used as the light intensity correction value.

[0031] Understandably, this involves intelligently linking light control with the temperature environment. The system not only simulates the natural sunrise and sunset light rhythms but also dynamically adjusts the light intensity based on the difference between the external ambient temperature and the aquarium water temperature. For example, when the outside environment is too hot, the light intensity is appropriately reduced (correction factor less than 1) to minimize the additional impact of heat generated by light on the water temperature; when the outside environment is too cold, the light intensity is appropriately increased (correction factor greater than 1) to partially compensate for the heat. This makes light management no longer an isolated function but rather work in conjunction with thermal management to create a more stable and more natural ecological environment for the fish.

[0032] In some embodiments of this application, when the PLC central control unit is further configured to adjust the operating power of the circulating filtration device based on the feeding time, it includes: The circulating filter device is paused for a first preset duration before the feeding time and a second preset duration after the feeding time. Within a third preset time period following the end of the second preset time period, the circulating filtration device is activated, and its operating power is gradually increased to a preset peak operating power value based on a preset first standard power value, and then gradually decreased to the preset first standard power value based on a preset gradient; wherein... The preset peak operating power value is less than the operating power threshold of the circulating filtration device.

[0033] Understandably, the behavior of the filtration system during feeding has been optimized. Filtration is paused during feeding to prevent fish food from being immediately sucked into the system, ensuring the fish have ample time to feed and reducing waste and strain on the filtration system. After feeding, a stepped up-peak-step down power operation mode is used, which efficiently removes food residue and waste while avoiding sudden, drastic changes in water flow that could disturb the fish. This design balances feeding efficiency, water quality, and fish welfare.

[0034] In some embodiments of this application, when the PLC central control unit is used to control the oxygenation device based on the dissolved oxygen concentration value, it includes: Set a preset first dissolved oxygen concentration threshold and a preset second dissolved oxygen concentration threshold, and set a preset second standard power value and a preset oxygenation power value for the operation of the aeration device; wherein, The preset first dissolved oxygen concentration threshold is greater than the preset second dissolved oxygen concentration threshold, and the preset oxygenation power value is greater than the preset second standard power value; The oxygenation device is controlled based on the relationship between the dissolved oxygen concentration value and preset first and second dissolved oxygen concentration thresholds; wherein... When the dissolved oxygen concentration value is greater than the preset first dissolved oxygen concentration threshold, the oxygenation device is paused. When the preset second dissolved oxygen concentration threshold is ≤ dissolved oxygen concentration value ≤ preset first dissolved oxygen concentration threshold, the oxygenation device is controlled to operate at a preset second standard power value; When the dissolved oxygen concentration value is less than the preset second dissolved oxygen concentration threshold, the oxygenation device is controlled to operate at the preset oxygenation power value.

[0035] Understandably, a tiered control logic for dissolved oxygen concentration was established. This enabled the aeration device to operate on demand and at energy efficiency. When dissolved oxygen is sufficient, it maintains or pauses operation at low power; when dissolved oxygen is insufficient, it rapidly aerates at high power. This avoids energy waste and equipment damage caused by continuous full-power operation of the aeration device, while accurately ensuring the dissolved oxygen level in the water and meeting the respiratory needs of the fish.

[0036] In some embodiments of this application, the PLC central control unit is further configured to dynamically adjust the oxygenation device in conjunction with the operating power value of the circulating filtration device, including: Set a preset operating power reference value, and set preset first power correction coefficient, preset second power correction coefficient, and preset third power correction coefficient; wherein... The preset first standard power value < preset operating power reference value < preset peak operating power value, 0.8 < preset third power correction coefficient < preset second power correction coefficient < 1 < preset first power correction coefficient < 1.2; Based on the relationship between the operating power value of the circulating filtration device and the preset first standard power value, the preset operating power reference value, and the preset peak operating power value, the preset oxygenation power value and the preset second standard power value of the oxygenation device are corrected; wherein... When the operating power value of the circulating filtration device satisfies the condition that the operating power value is less than the preset first standard power value, a preset first power correction coefficient is selected to correct the preset oxygenation power value and the preset second standard power value of the oxygenation device, and the product of the preset first power correction coefficient and the preset oxygenation power value is used as the preset oxygenation power correction value, and the product of the preset first power correction coefficient and the preset second standard power value is used as the preset second standard power correction value. When the operating power value of the circulating filtration device satisfies the following condition: the preset first standard power value ≤ operating power value ≤ preset operating power reference value, a preset second power correction coefficient is selected to correct the preset oxygenation power value and the preset second standard power value of the oxygenation device, and the product of the preset second power correction coefficient and the preset oxygenation power value is used as the preset oxygenation power correction value, and the product of the preset second power correction coefficient and the preset second standard power value is used as the preset second standard power correction value; When the operating power value of the circulating filtration device satisfies the following condition: the preset operating power reference value < operating power value < preset peak operating power value, a preset third power correction coefficient is selected to correct the preset oxygenation power value and the preset second standard power value of the oxygenation device, and the product of the preset third power correction coefficient and the preset oxygenation power value is used as the preset oxygenation power correction value, and the product of the preset third power correction coefficient and the preset second standard power value is used as the preset second standard power correction value.

[0037] Understandably, this reveals the intelligent linkage and power coupling relationship between the filtration system and the aeration system. Water flow itself promotes gas exchange (oxygenation). Therefore, when the filtration power is high, the power setting of the aeration device is appropriately lowered (multiplied by a coefficient less than 1); conversely, it is increased. This linkage control achieves optimized allocation of internal system resources, potentially further reducing overall system energy consumption while ensuring total dissolved oxygen levels, demonstrating a higher level of system integration and intelligence.

[0038] In some embodiments of this application, when the PLC central control unit is used to control the water replenishment device based on the water level value, it includes: Set a preset second water level threshold and a preset water level reference value; wherein, The preset second water level threshold is less than the preset water level reference value and less than the preset first water level threshold. The start and stop of the water replenishment device are controlled based on the relationship between the water level value and the preset second water level threshold, the preset water level reference value, and the preset first water level threshold; wherein... When the water level value is less than the preset second water level threshold, the water replenishment device is activated; When the water level value is greater than the preset water level reference value, the water replenishment device is paused.

[0039] Understandably, the automatic control logic of the water replenishment device has been clearly defined, achieving automatic water level maintenance. By setting the start and stop water levels (reference values), the system can automatically replenish water when the level is too low and automatically stop when the appropriate level is reached. This effectively prevents the water level from dropping too low due to evaporation or other reasons, and also avoids the risk of overflowing due to excessive water replenishment. This ensures the long-term stability of the aquarium water level and reduces the workload of daily maintenance.

[0040] In some embodiments of this application, the PLC-based intelligent aquarium aquaculture control system further includes: The human-machine interface unit is connected to the PLC central control unit via signals, and is used for parameter setting and status display.

[0041] Understandably, this greatly enhances the system's ease of use and user experience. Users can easily set various parameters (such as temperature thresholds, feeding times, and light curves) through this unit (e.g., a touchscreen or mobile app) and intuitively view the current status data of the aquarium. This allows the highly automated system to remain transparent and controllable to the user, lowering the barrier to entry and facilitating status monitoring and personalized settings.

[0042] Understandably, this system, through unified PLC control, achieves fully automated management of core aquaculture aspects such as water temperature, pH, dissolved oxygen, water level, lighting, and feeding, significantly reducing the intensity of manual intervention and the need for specialized knowledge. It overcomes the limitations of independent operation of individual actuators, realizing intelligent linkage and power coupling between multiple subsystems such as feeding and filtration, lighting and temperature, and aeration and filtration, thus improving overall management efficiency and energy utilization efficiency. By simulating sunrise and sunset light curves and combining them with dynamic temperature correction, it provides aquatic organisms with a more natural and healthier light and thermal environment rhythm. Furthermore, the system can sense changes in external ambient temperature and dynamically adjust water temperature control targets and light intensity accordingly, enhancing the system's robustness to external disturbances and providing a more stable microclimate for the aquarium.

[0043] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program goods. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program goods embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0044] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program goods according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0045] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0046] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A PLC-based intelligent aquarium aquaculture control system, characterized in that, include: The aquarium body is equipped with a temperature control device, a water supply device, a circulating filter device, an oxygenation device, a lighting device, and a feeding device. The data acquisition unit is used to collect the water temperature, pH value, dissolved oxygen concentration and water level inside the aquarium in real time, as well as the ambient temperature outside the aquarium in real time. The PLC central control unit is connected to the data acquisition unit, temperature regulation device, water replenishment device, circulating filtration device, oxygenation device, lighting device, and feeding device, respectively; wherein... The PLC central control unit is used to acquire water temperature, ambient temperature, pH, dissolved oxygen concentration, and water level values ​​collected by the data acquisition unit, and to determine whether the pH and water level values ​​are abnormal. If an abnormality is detected in either the pH or water level value, an alarm command is generated. The PLC central control unit is also used to control the temperature regulation device based on the water temperature and ambient temperature values. Furthermore, the PLC central control unit is used to pre-set simulated sunrise and sunset light curves, and to dynamically adjust the lighting device based on these curves, while also adjusting the lighting of the device in conjunction with the water temperature and ambient temperature values. The intensity is corrected; the PLC central control unit is also used to preset feeding time and feeding amount parameters, and when the feeding time is reached, control the feeding device to perform feeding operation based on the feeding amount parameters; the PLC central control unit is also used to adjust the operating power of the circulating filtration device based on the feeding time, and obtain the operating power value of the circulating filtration device in real time; the PLC central control unit is also used to control the aeration device based on the dissolved oxygen concentration value, and dynamically adjust the aeration device in combination with the operating power value; the PLC central control unit is also used to control the water replenishment device based on the water level value; An alarm unit is connected to the PLC central control unit. The alarm unit is used to receive the alarm command and execute the alarm operation.

2. The PLC-based intelligent aquarium aquaculture control system according to claim 1, characterized in that, The PLC central control unit is used to determine whether the pH value and water level value are abnormal. When it is determined that either the pH value or the water level value is abnormal, an alarm command is generated, including: The PLC central control unit is set with a preset first pH threshold, a preset second pH threshold, and a preset first water level threshold; wherein... The preset first pH threshold is greater than the preset second pH threshold; When the pH value is greater than the preset first pH threshold, it is determined that the pH value is abnormal; When the pH value is less than the preset second pH threshold, it is determined that the pH value is abnormal; When the water level value is greater than the preset first water level threshold, it is determined that the water level value is abnormal. When either the pH value or the water level value is abnormal, the PLC central control unit generates an alarm command.

3. The PLC-based intelligent aquarium aquaculture control system according to claim 2, characterized in that, The PLC central control unit is also used to control the temperature regulating device based on the water temperature value and the ambient temperature value, including: The PLC central control unit is set with a preset first water temperature threshold and a preset second water temperature threshold; wherein... The preset first water temperature threshold is greater than the preset second water temperature threshold; When the water temperature value is greater than the first water temperature threshold, the PLC central control unit controls the temperature regulating device to heat the water in the fish tank. When the water temperature value is less than the second water temperature threshold, the PLC central control unit controls the temperature regulation device to cool the water in the fish tank. The PLC central control unit is also used to dynamically adjust the temperature regulation device based on the ambient temperature value.

4. The PLC-based intelligent aquarium aquaculture control system according to claim 3, characterized in that, The PLC central control unit is also used to dynamically adjust the temperature regulation device in conjunction with the ambient temperature value, including: The PLC central control unit sets a first preset water temperature reference value, a second preset water temperature reference value, a third preset water temperature reference value, a fourth preset water temperature reference value, a fifth preset water temperature reference value, a first preset temperature difference threshold, and a second preset temperature difference threshold; wherein... The preset first water temperature threshold > preset first water temperature reference value > preset second water temperature reference value > preset third water temperature reference value > preset fourth water temperature reference value > preset fifth water temperature reference value > preset second water temperature threshold, and the preset first temperature difference threshold > preset second temperature difference threshold. The temperature regulating device is dynamically adjusted based on the relationship between the ambient temperature value and preset first and second water temperature thresholds; wherein... When the preset second water temperature threshold is ≤ ambient temperature value ≤ preset first water temperature threshold, the temperature regulation device will not be dynamically adjusted. When the ambient temperature value is greater than a preset first water temperature threshold, the difference between the ambient temperature value and the water temperature value is calculated, and this difference is used as the temperature difference value. Based on the relationship between the temperature difference value and the preset first temperature difference threshold and the preset second temperature difference threshold, the temperature regulating device is dynamically adjusted; wherein... When the temperature difference value is greater than the preset first temperature difference threshold, the temperature regulating device is controlled to adjust the water temperature in the aquarium body to meet the following condition: the preset second water temperature threshold < water temperature value ≤ preset fifth water temperature reference value. When the preset second temperature difference threshold ≤ temperature difference value ≤ preset first temperature difference threshold is satisfied, the temperature adjustment device is controlled to adjust the water temperature in the aquarium body to satisfy: the preset fifth water temperature reference value < water temperature value ≤ preset fourth water temperature reference value; When the temperature difference value is less than the preset second temperature difference threshold, the temperature regulating device is controlled to adjust the water temperature in the aquarium body to meet the following: the preset fourth water temperature reference value < water temperature value ≤ preset third water temperature reference value. When the ambient temperature value is less than a preset second water temperature threshold, the absolute value of the difference between the ambient temperature value and the water temperature value is calculated, and this absolute value is used as the absolute temperature difference value. Based on the relationship between the absolute temperature difference value and the preset first and second temperature difference thresholds, the temperature regulating device is dynamically adjusted. When the absolute temperature difference value is less than the preset second temperature difference threshold, the temperature regulating device is controlled to adjust the water temperature in the aquarium body to meet the following condition: the preset third water temperature reference value is less than the water temperature value and ≤ the preset second water temperature reference value. When the preset second temperature difference threshold ≤ absolute temperature difference value ≤ preset first temperature difference threshold is satisfied, the temperature adjustment device is controlled to adjust the water temperature in the aquarium body to satisfy: the preset second water temperature reference value < water temperature value ≤ preset first water temperature reference value; When the absolute temperature difference value is greater than the preset first temperature difference threshold, the temperature regulating device is controlled to adjust the water temperature in the aquarium body to meet the following condition: the preset first water temperature reference value < water temperature value ≤ preset first water temperature threshold.

5. The PLC-based intelligent aquarium aquaculture control system according to claim 4, characterized in that, The PLC central control unit is also used to pre-set simulated sunrise and sunset light curves, and dynamically adjust the lighting device based on the simulated sunrise and sunset light curves. When correcting the light intensity of the lighting device by combining the water temperature value and the ambient temperature value, the following is included: The PLC central control unit controls the illumination device to fit the simulated sunrise and sunset illumination curve, and obtains the illumination intensity value of the illumination device in real time under the simulated sunrise and sunset illumination curve. Set preset first correction coefficient, preset second correction coefficient, preset third correction coefficient, preset fourth correction coefficient, preset fifth correction coefficient, and preset sixth correction coefficient; among which, The formula is: 0.8 < preset sixth correction coefficient < preset fifth correction coefficient < preset fourth correction coefficient < 1 < preset third correction coefficient < preset second correction coefficient < preset first correction coefficient < 1.2; The light intensity value is corrected based on the relationship between the ambient temperature value and preset first and second water temperature thresholds; wherein... When the preset second water temperature threshold is ≤ ambient temperature value ≤ preset first water temperature threshold, the light intensity value is not corrected; When the ambient temperature value is greater than a preset first water temperature threshold, the light intensity value is corrected based on the relationship between the temperature difference value and the preset first temperature difference threshold and the preset second temperature difference threshold; wherein... When the temperature difference value is greater than the preset first temperature difference threshold, a preset sixth correction coefficient is selected to correct the light intensity value, and the product of the preset sixth correction coefficient and the light intensity value is used as the light intensity correction value. When the preset second temperature difference threshold ≤ temperature difference value ≤ preset first temperature difference threshold is met, a preset fifth correction coefficient is selected to correct the light intensity value, and the product of the preset fifth correction coefficient and the light intensity value is used as the light intensity correction value; When the temperature difference value is less than the preset second temperature difference threshold, a preset fourth correction coefficient is selected to correct the light intensity value, and the product of the preset fourth correction coefficient and the light intensity value is used as the light intensity correction value. When the ambient temperature value is less than a preset second water temperature threshold, the light intensity value is corrected based on the relationship between the absolute temperature difference value and the preset first and second temperature difference thresholds; wherein... When the absolute temperature difference value is less than the preset second temperature difference threshold, a preset third correction coefficient is selected to correct the light intensity value, and the product of the preset third correction coefficient and the light intensity value is used as the light intensity correction value. When the preset second temperature difference threshold ≤ absolute temperature difference value ≤ preset first temperature difference threshold is satisfied, a preset second correction coefficient is selected to correct the light intensity value, and the product of the preset second correction coefficient and the light intensity value is used as the light intensity correction value. When the absolute temperature difference value is greater than the preset first temperature difference threshold, a preset first correction coefficient is selected to correct the light intensity value, and the product of the preset first correction coefficient and the light intensity value is used as the light intensity correction value.

6. The PLC-based intelligent aquarium aquaculture control system according to claim 5, characterized in that, The PLC central control unit is also used to adjust the operating power of the circulating filtration device based on the feeding time, including: The circulating filter device is paused for a first preset duration before the feeding time and a second preset duration after the feeding time. Within a third preset time period following the end of the second preset time period, the circulating filtration device is activated, and its operating power is gradually increased to a preset peak operating power value based on a preset first standard power value, and then gradually decreased to the preset first standard power value based on a preset gradient; wherein... The preset peak operating power value is less than the operating power threshold of the circulating filtration device.

7. The PLC-based intelligent aquarium aquaculture control system according to claim 6, characterized in that, The PLC central control unit is also used to control the oxygenation device based on the dissolved oxygen concentration value, including: Set a preset first dissolved oxygen concentration threshold and a preset second dissolved oxygen concentration threshold, and set a preset second standard power value and a preset oxygenation power value for the operation of the aeration device; wherein, The preset first dissolved oxygen concentration threshold is greater than the preset second dissolved oxygen concentration threshold, and the preset oxygenation power value is greater than the preset second standard power value; The oxygenation device is controlled based on the relationship between the dissolved oxygen concentration value and preset first and second dissolved oxygen concentration thresholds; wherein... When the dissolved oxygen concentration value is greater than the preset first dissolved oxygen concentration threshold, the oxygenation device is paused. When the preset second dissolved oxygen concentration threshold is ≤ dissolved oxygen concentration value ≤ preset first dissolved oxygen concentration threshold, the oxygenation device is controlled to operate at a preset second standard power value; When the dissolved oxygen concentration value is less than the preset second dissolved oxygen concentration threshold, the oxygenation device is controlled to operate at the preset oxygenation power value.

8. The PLC-based intelligent aquarium aquaculture control system according to claim 7, characterized in that, The PLC central control unit is also used to dynamically adjust the oxygenation device based on the operating power value of the circulating filtration device, including: Set a preset operating power reference value, and set preset first power correction coefficient, preset second power correction coefficient, and preset third power correction coefficient; wherein... The preset first standard power value < preset operating power reference value < preset peak operating power value, 0.8 < preset third power correction coefficient < preset second power correction coefficient < 1 < preset first power correction coefficient < 1.2; Based on the relationship between the operating power value of the circulating filtration device and the preset first standard power value, the preset operating power reference value, and the preset peak operating power value, the preset oxygenation power value and the preset second standard power value of the oxygenation device are corrected; wherein... When the operating power value of the circulating filtration device satisfies the condition that the operating power value is less than the preset first standard power value, a preset first power correction coefficient is selected to correct the preset oxygenation power value and the preset second standard power value of the oxygenation device, and the product of the preset first power correction coefficient and the preset oxygenation power value is used as the preset oxygenation power correction value, and the product of the preset first power correction coefficient and the preset second standard power value is used as the preset second standard power correction value. When the operating power value of the circulating filtration device satisfies the following condition: the preset first standard power value ≤ operating power value ≤ preset operating power reference value, a preset second power correction coefficient is selected to correct the preset oxygenation power value and the preset second standard power value of the oxygenation device, and the product of the preset second power correction coefficient and the preset oxygenation power value is used as the preset oxygenation power correction value, and the product of the preset second power correction coefficient and the preset second standard power value is used as the preset second standard power correction value; When the operating power value of the circulating filtration device satisfies the following condition: the preset operating power reference value < operating power value < preset peak operating power value, a preset third power correction coefficient is selected to correct the preset oxygenation power value and the preset second standard power value of the oxygenation device, and the product of the preset third power correction coefficient and the preset oxygenation power value is used as the preset oxygenation power correction value, and the product of the preset third power correction coefficient and the preset second standard power value is used as the preset second standard power correction value.

9. The PLC-based intelligent aquarium aquaculture control system according to claim 8, characterized in that, The PLC central control unit is also used to control the water replenishment device based on the water level value, including: Set a preset second water level threshold and a preset water level reference value; wherein, The preset second water level threshold is less than the preset water level reference value and less than the preset first water level threshold. The start and stop of the water replenishment device are controlled based on the relationship between the water level value and the preset second water level threshold, the preset water level reference value, and the preset first water level threshold; wherein... When the water level value is less than the preset second water level threshold, the water replenishment device is activated; When the water level value is greater than the preset water level reference value, the water replenishment device is paused.

10. The PLC-based intelligent aquarium aquaculture control system according to any one of claims 1-9, characterized in that, Also includes: The human-machine interface unit is connected to the PLC central control unit via signals, and is used for parameter setting and status display.

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