A method and device for adjusting water flow in a breeding pond, an electronic device, and a storage medium

Abstract

The application provides a breeding pond water flow adjusting method and device, electronic equipment and storage medium, applied to the field of recirculating aquaculture technology, by acquiring the environmental temperature of the breeding pond and its change amount, when the environmental temperature exceeds the first preset temperature range and the change amount is small, the current water flow speed is acquired to evaluate whether the water flow needs to be adjusted to adapt to the temperature change, and the stability of the water quality and fish growth environment is maintained; through the reference of historical data, the adjustment strategy of the water flow speed can be more scientifically formulated, and unnecessary pressure on the fish caused by blind adjustment can be avoided. Limiting the increase amplitude of the water flow speed within a safe range can avoid the impact on the fish caused by the too fast change of the water flow speed, and ensure the comfortable and healthy growth of the fish. Therefore, the application has the beneficial effects of preventing the formation of dead water area and avoiding the impact on the fish caused by the too fast change of the water flow speed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of recirculating aquaculture, and in particular to a method and device for adjusting water flow in an aquaculture pond, an electronic device and a storage medium. BACKGROUND

[0002] With the increasing scarcity of global water resources and the growing awareness of environmental protection, traditional open aquaculture methods have been unable to meet the requirements of sustainable development. As a new type of aquaculture model, the recirculating aquaculture system effectively reduces the dependence on external water sources by recycling water resources, and at the same time, through advanced recirculating purification technology, it realizes the reuse of aquaculture water, improves the efficiency and economic benefits of aquaculture.

[0003] The existing recirculating aquaculture system mainly includes two parts: an aquaculture pond and a recirculating purification system. The aquaculture pond is used to contain aquaculture organisms, while the recirculating purification system purifies the aquaculture water through physical, chemical and biological methods to maintain the stability of the water quality. The recirculating purification system usually includes filtration, aeration, biological purification and disinfection, etc. These processes work together to effectively remove suspended solids, organic matter and harmful microorganisms in the water, while supplementing necessary dissolved oxygen and nutrients. Although the existing recirculating aquaculture system can achieve basic monitoring of water quality, the monitoring and management of water flow dynamics in the aquaculture pond are not perfect, especially for the formation and treatment of dead water areas.

[0004] In the existing recirculating aquaculture system, the area of the aquaculture pond is usually large, which is prone to the formation of dead water areas. These dead water areas, due to slow or stagnant water flow, lead to the accumulation of pollutants and the reproduction of harmful microorganisms, increasing the risk of pollution of the aquaculture water and reducing the number of times the aquaculture water is recycled, which is not conducive to the full use of the aquaculture water, thereby increasing the cost of recirculating aquaculture.

[0005] How to effectively prevent the formation of dead water areas during design and operation, and ensure the normal growth of fish during the prevention of dead water formation, is a difficult problem that needs to be solved in the existing technology. SUMMARY

[0006] In view of the above shortcomings of the prior art, the present application provides a method and device for adjusting water flow in an aquaculture pond, an electronic device and a storage medium, which are applied to the technical field of recirculating aquaculture. By monitoring the ambient temperature and the temperature change, the influence of the ambient temperature on the aquaculture pond water can be predicted, and the first historical water flow speed corresponding to the minimum activity value of the fish that can adapt to the current ambient temperature is obtained. The increase in the current water flow speed is limited within a safe range based on the first historical water flow speed, so as to promote water mixing and prevent the formation of dead water areas, while avoiding the impact on fish caused by too fast changes in water flow speed.

[0007] In a first aspect, the application provides a method for adjusting water flow in a culture pond, the method comprising the steps of:

[0008] S1: obtaining an ambient temperature of the culture pond and a temperature variation of the ambient temperature in a continuous time period;

[0009] S2: when the ambient temperature exceeds a first preset temperature range and the temperature variation is less than or equal to a second preset temperature value, obtaining a current water flow rate of the culture pond, determining a first historical water flow rate corresponding to a minimum activity value at which the fish can adapt to survive at the ambient temperature according to the fish species, and predicting a first target water flow rate corresponding to a standard dissolved oxygen amount of the culture pond after a target time period at the ambient temperature according to historical data;

[0010] S3: when the current water flow rate is less than the first target water flow rate, if the first target water flow rate is less than or equal to the first historical water flow rate, increasing the current water flow rate to reach the first target water flow rate; if the first target water flow rate is greater than the first historical water flow rate, issuing a first reminder information to remind a user to manually adjust the current water flow rate of the culture pond;

[0011] S4: when the current water flow rate is greater than or equal to the first target water flow rate, keeping the current water flow rate unchanged.

[0012] The application provides a method for adjusting the water flow in a breeding pond. By monitoring the environmental temperature and the temperature change amount of the breeding pond, the method can provide basic data for subsequent water flow and dissolved oxygen control, and can timely detect abnormal environmental temperature to provide early warning for preventing the formation of dead water in the breeding pond due to temperature changes. When the environmental temperature exceeds a first preset temperature range and the temperature change amount is less than or equal to a second preset temperature value, the current water flow rate is obtained, and the appropriate first historical water flow rate is determined according to the fish species and historical data, and the first target water flow rate corresponding to the future dissolved oxygen amount meeting the demand is predicted, to ensure that the survival needs of fish can be met when the current water flow rate is adjusted to prevent the formation of dead water area. When the current water flow rate is lower than the first target water flow rate, the system will automatically adjust or remind manual adjustment of the water flow rate to meet the needs of fish survival and dissolved oxygen amount, ensuring that the water flow adjustment can prevent the formation of dead water area and will not affect the growth of fish. When the current water flow rate is greater than or equal to the first target water flow rate, it means that it is not easy to form dead water in the breeding pond under the current water flow rate, and the system will maintain the current water flow rate to save energy and operating cost, while maintaining the stability of the breeding environment and avoiding unnecessary water flow changes that may cause potential stress reactions to fish. Therefore, the method for adjusting the water flow in the breeding pond combines temperature monitoring, data analysis, automatic adjustment and manual intervention to effectively prevent the formation of dead water, and ensures the survival environment and health of fish, so that breeders can better cope with environmental changes and improve the success rate of breeding.

[0013] Further, step S1 further comprises:

[0014] S21: When the environmental temperature exceeds a first preset temperature range and the temperature change amount is less than or equal to a second preset temperature value, the first temperature of the upper pond water and the second temperature of the lower pond water in the breeding pond are obtained.

[0015] S22: When the first temperature difference between the first temperature and the second temperature is greater than or equal to a preset temperature difference, the current water flow rate of the breeding pond is obtained.

[0016] S23: The average value of the sum of the first temperature and the second temperature is calculated to obtain a preset mixed pond water temperature, and the second historical water flow rate corresponding to the minimum activity value at which the fish can adapt to survival under the preset mixed pond water temperature is obtained according to the fish species, and the second target water flow rate corresponding to the dissolved oxygen amount of the breeding pond meeting the standard dissolved oxygen amount after a target time under the preset mixed pond water temperature is predicted according to historical data.

[0017] S24: When the second target water flow rate is inconsistent with the first target water flow rate, compare the current water flow rate with the second target water flow rate, if the second target water flow rate is less than or equal to the second historical water flow rate, increase the current water flow rate to reach the second target water flow rate; if the second target water flow rate is greater than the second historical water flow rate, issue a first reminder information to remind the user to manually adjust the current water flow rate of the culture pond; when the current water flow rate is greater than or equal to the second target water flow rate, keep the current water flow rate unchanged.

[0018] The culture pond water flow adjusting method provided by the present application can accurately evaluate the temperature stratification in the culture pond by obtaining the first temperature of the upper layer and the second temperature of the lower layer of the pond water, and monitoring the temperature of different layers can help to find potential temperature stratification problems in time, so that preventive measures can be taken to avoid the formation of dead water area caused by temperature stratification. When a significant temperature difference is detected, the current water flow rate is obtained to evaluate whether the water flow needs to be adjusted to reduce temperature stratification and ensure uniform water quality to provide a suitable growth environment for fish; calculating the preset mixed pond water temperature and obtaining the second historical water flow rate corresponding to the minimum activity value of fish at the temperature and the second target water flow rate corresponding to the condition that the dissolved oxygen amount meets the condition can provide a scientific basis for adjusting the water flow rate and ensure that fish remain healthy and active in changing environments. According to the comparison of the current water flow rate and the second target water flow rate, the water flow rate is dynamically adjusted to adapt to the survival needs of fish while preventing the formation of dead water area.

[0019] Further, step S1 further includes:

[0020] S25: When the environmental temperature exceeds the first preset temperature range, and the temperature change amount is less than or equal to the second preset temperature value, the culture pond is divided into multiple sub-regions;

[0021] S26: Obtain the third temperature of the pond water in each sub-region, and determine the abnormal sub-region corresponding to the abnormal temperature according to the third temperature;

[0022] S27: Obtain the current local water flow rate of the abnormal sub-region, and determine the third historical water flow rate corresponding to the minimum activity value of the fish that can adapt to survival at the non-abnormal temperature in the third temperature according to the fish species, and predict the third target water flow rate corresponding to the condition that the dissolved oxygen amount of the culture pond meets the standard dissolved oxygen amount after a target time length at the abnormal temperature in the third temperature according to historical data;

[0023] S28: When the third target water flow rate is inconsistent with the first target water flow rate, compare the current water flow rate with the third target water flow rate. If the third target water flow rate is less than or equal to the third historical water flow rate, increase the current water flow rate to reach the third target water flow rate. If the third target water flow rate is greater than the third historical water flow rate, issue a second reminder information to remind the user to manually adjust the current local water flow rate of the abnormal sub-area. When the current local water flow rate is greater than or equal to the third historical water flow rate, keep the current local water flow rate unchanged.

[0024] The aquaculture pond water flow regulation method provided by the present application divides the aquaculture pond into multiple sub-areas, which can more carefully monitor and manage the aquaculture environment, and improve the response speed and accuracy of local temperature changes. This division helps to identify and manage local problems that may exist in the aquaculture pond, such as temperature stratification or dead water areas, so that targeted measures can be taken. Obtaining the third temperature of the water in each sub-area of the pond helps to timely discover and locate areas with abnormal temperature, which may form dead water. Determining the abnormal sub-area can provide a specific target area for subsequent water flow adjustment, ensuring that the adjustment measures are more accurate and effective. Obtaining the current local water flow rate of the abnormal sub-area and the third historical water flow rate corresponding to the minimum activity value that fish can adapt to survive under the non-abnormal temperature, as well as the third target water flow rate when the dissolved oxygen content meets the condition, provides a scientific basis for adjusting the water flow. This step takes into account the adaptability of fish to local environmental changes, which helps to improve the formation of dead water areas while ensuring the health and growth of fish. Adjusting the current local water flow rate according to the third historical water flow rate and the third target water flow rate can improve the water environment of the abnormal sub-area, promote the uniform mixing of the water body, reduce the formation of dead water areas, and avoid the impact on fish caused by rapid changes in water flow rate, ensuring the comfort and healthy growth of fish.

[0025] Further, step S28 includes the following steps:

[0026] S281: Obtain the frequency of the abnormal sub-area that is determined as an abnormal sub-area more than a preset number of times in a preset time period;

[0027] S282: Obtain the actual breeding density in the frequent abnormal sub-area, and determine whether the actual breeding density meets the standard breeding density;

[0028] S283: When the actual breeding density does not meet the standard breeding density, issue a third reminder information to remind the user to adjust the actual breeding density to meet the standard breeding density.

[0029] The application provides a method for adjusting water flow in a breeding pond. By identifying frequently abnormal sub-regions, the method can more accurately locate the areas in the breeding pond where problems repeatedly occur, helping to concentrate resources and attention to solve the specific problems that are prone to form dead water in these areas. The actual breeding density in the frequently abnormal sub-region is obtained and compared with the standard breeding density to evaluate whether the breeding density is a factor causing problems in the abnormal area, helping to determine whether the breeding density needs to be adjusted to improve the breeding environment and prevent the formation of dead water areas.

[0030] Further, step S283 is followed by:

[0031] S284: When the actual breeding density meets the standard breeding density, the sediment accumulation amount of the frequently abnormal sub-region is obtained, and it is determined whether the sediment accumulation amount exceeds a preset allowed accumulation amount;

[0032] S285: When the sediment accumulation amount is greater than or equal to the preset allowed accumulation amount, a fourth reminder information is issued to remind the user to clean the sediment.

[0033] Further, step S285 is followed by:

[0034] S286: When the sediment accumulation amount is less than the preset allowed accumulation amount, the first regional topography of the frequently abnormal sub-region is obtained;

[0035] S287: A fifth reminder information is issued according to the first regional topography to remind the user to adjust the first regional topography to reduce the protruding part in the first regional topography.

[0036] Further, step S28 is followed by:

[0037] S291: A long-term abnormal sub-region is obtained, which has existed for a time period longer than a preset time period;

[0038] S292: The actual breeding density in the long-term abnormal sub-region is obtained, and it is determined whether the actual breeding density meets the standard breeding density;

[0039] S293: When the actual breeding density does not meet the standard breeding density, a third reminder information is issued to remind the user to adjust the actual breeding density so that the actual breeding density meets the standard breeding density.

[0040] In a second aspect, the application provides a device for adjusting water flow in a breeding pond, which comprises:

[0041] A first obtaining module is configured to obtain the environmental temperature of the breeding pond and the temperature variation of the environmental temperature in a continuous time period;

[0042] The second acquisition module is configured to acquire a current water flow rate of the aquaculture pond, determine a first historical water flow rate corresponding to a minimum activity value of the fish that can adapt to survival under the environmental temperature according to the fish variety, and predict a first target water flow rate corresponding to a dissolved oxygen amount of the aquaculture pond meeting a standard dissolved oxygen amount after a target time length under the environmental temperature according to historical data when the environmental temperature exceeds the first preset temperature range and the temperature variation amount is less than or equal to the second preset temperature value.

[0043] The first adjustment module is configured to, when the current water flow rate is less than the first target water flow rate, if the first target water flow rate is less than or equal to the first historical water flow rate, increase the current water flow rate to the first target water flow rate, and if the first target water flow rate is greater than the first historical water flow rate, send a first reminder information to remind a user to manually adjust the current water flow rate of the aquaculture pond.

[0044] The second adjustment module is configured to, when the current water flow rate is greater than or equal to the first target water flow rate, keep the current water flow rate unchanged.

[0045] In a third aspect, the present application provides an electronic device, comprising a processor and a memory, the memory storing computer readable instructions, when the computer readable instructions are executed by the processor, the steps in any of the above methods are executed.

[0046] In a fourth aspect, the present application provides a computer readable storage medium, which stores a computer program, when the computer program is executed by a processor, the steps in any of the above methods are executed.

[0047] Beneficial effects: The application provides a culture pond water flow adjusting method, device, electronic equipment and storage medium. The culture pond environment temperature and temperature change amount are monitored, basic data is provided for subsequent water flow and dissolved oxygen amount regulation and control, the abnormal environment temperature can be found in time, and early warning is provided for preventing the temperature change from forming dead water in the culture pond. When the environment temperature exceeds the first preset temperature range and the temperature change amount is less than or equal to the second preset temperature value, the current water flow speed is obtained, the suitable first historical water flow speed is determined according to the fish variety and historical data, and the first target water flow speed corresponding to the future dissolved oxygen amount meeting the demand is predicted, so that the survival demand of the fish can be met when the current water flow speed is adjusted to prevent the formation of the dead water area. When the current water flow speed is lower than the first target water flow speed, the system automatically adjusts or reminds manual adjustment of the water flow speed to meet the survival and dissolved oxygen amount demand of the fish, and ensures that the water flow adjustment can prevent the formation of the dead water area and will not affect the fish growth. When the current water flow speed is greater than or equal to the first target water flow speed, it is indicated that the dead water is not easy to form in the culture pond under the current water flow speed, the system maintains the current water flow speed, saves energy and operation cost, and maintains the stability of the culture environment, thereby avoiding the potential stress reaction of the fish caused by unnecessary water flow change. Therefore, the culture pond water flow adjusting method combines temperature monitoring, data analysis, automatic adjustment and manual intervention, effectively prevents the formation of dead water, ensures the survival environment and health of the fish, and enables the breeder to better cope with environmental changes and improve the breeding success rate. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 A flowchart of a culture pond water flow adjusting method is provided.

[0049] Figure 2 A structure diagram of a culture pond water flow adjusting device is provided.

[0050] Figure 3 A structure diagram of an electronic equipment is provided.

[0051] Label explanation: 201, first obtaining module; 202, second obtaining module; 203, first adjusting module; 204, second adjusting module; 301, processor; 302, memory; 303, communication bus; 3, electronic equipment. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0053] It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second", and the like are only used to distinguish description, and cannot be understood as indicating or implying relative importance.

[0054] The following disclosure provides many different embodiments or examples for implementing the purposes of the present application, which solves the problem that the monitoring and management of water flow dynamics in a culture pond are not perfect enough in the prior art, especially the lack of effective technical means for the formation and treatment of dead water areas.

[0055] Please refer to Figure 1 The present application provides a culture pond water flow adjusting method, the method comprising the steps of:

[0056] S1: obtaining the environmental temperature of the culture pond and the temperature variation of the environmental temperature in a continuous time period;

[0057] S2: when the environmental temperature exceeds a first preset temperature range and the temperature variation is less than or equal to a second preset temperature value, obtaining the current water flow rate of the culture pond, and determining the first historical water flow rate corresponding to the minimum activity value of the fish that can adapt to survival under the environmental temperature according to the fish species, and predicting the first target water flow rate of the culture pond when the dissolved oxygen amount meets the standard dissolved oxygen amount after a target time under the environmental temperature according to the historical data;

[0058] S3: when the current water flow rate is less than the first target water flow rate, if the first target water flow rate is less than or equal to the first historical water flow rate, the current water flow rate is increased to reach the first target water flow rate; if the first target water flow rate is greater than the first historical water flow rate, a first reminder information is sent to remind the user to manually adjust the current water flow rate of the culture pond;

[0059] S4: when the current water flow rate is greater than or equal to the first target water flow rate, the current water flow rate is kept unchanged.

[0060] The formation of the dead water area in the culture pond is due to insufficient dissolved oxygen in the pond water, and the insufficient dissolved oxygen is caused by slow flow of the pond water which cannot contact with air in a large area. Temperature is an important factor affecting the dissolved oxygen content of the pond water. High or low ambient temperature can cause uneven water temperature in the culture pond, thereby affecting the full mixing of water flow in each area. Part of the water cannot fully contact with air, resulting in the formation of dead water.

[0061] In step S1, the ambient temperature can be monitored by setting a temperature sensor. When the ambient temperature is too cold or too hot, for example in summer or winter, the water temperature in the culture pond is easily affected by the ambient temperature, resulting in stratification of the water temperature in the culture pond, and easy formation of dead water area. The temperature change amount can be obtained by recording the data collected by the temperature sensor, analyzing the temperature data using software tools, and identifying the trend and pattern of temperature change. For example, the ambient temperature rises from 32°C to 38°C in a day, where "a day" means a set of continuous time periods, indicating the change experienced by the ambient temperature within 24 hours. "A day" can be divided into a plurality of continuous time periods, each of which depends on the frequency of monitoring and recording. The continuous time period can be divided into hours, half hours or 15 minutes, etc. The specific setting is determined by the technical personnel. In each continuous time period, the temperature change amount can be determined through data monitoring and analysis.

[0062] By monitoring the ambient temperature and the temperature change amount, the possible temperature stratification impact on the culture pond can be analyzed and predicted, providing a data basis for preventing the formation of dead water area.

[0063] The first preset temperature range is set by the technician according to the environmental temperature for the healthy survival of the farmed fish, and the first preset temperature range includes a maximum temperature value and a minimum temperature value. For example, the first preset temperature range is set to 25°C to 30°C, the maximum temperature value is 30°C, and the minimum temperature value is 25°C. The environmental temperature value exceeding the first preset temperature range means that the environmental temperature is greater than the maximum temperature value or less than the minimum temperature value. The second preset temperature value is set by the technician according to the specific division of the continuous time period. For example, the continuous time period is divided by hours. In general, the temperature change in 1 hour will not exceed 2°C, and the second preset temperature value can be set to 2°C. In actual application, in the detection of one day, it is found that the minimum environmental temperature is 32°C, which has exceeded the maximum temperature value, and the temperature change in the continuous time period is 1°C, which is less than the second preset temperature value. It is indicated that the environmental temperature is continuously high, so it can be predicted that under the influence of the continuously high temperature, the water temperature in the aquaculture pond is prone to stratification, and then a dead water area is formed. In order to prevent the formation of the dead water area, the current water flow rate can be increased in advance to promote the fusion of the upper and lower layers of water flow. However, blindly increasing the current water flow rate can easily cause impact on the fish in the aquaculture pond, which is not conducive to the healthy growth of the fish.

[0064] The historical data at least includes the environmental temperature records of the aquaculture pond in different time periods in the past, the influence of the water flow rate of the aquaculture pond on the fish vitality value under different environmental temperatures, the vitality value of different fish under different environmental temperatures, and the relationship between the specific water temperature data and the dissolved oxygen amount under the historical environmental temperature. The minimum vitality value of the fish that can survive under the environmental temperature can be obtained through the above historical data and the fish species in the aquaculture pond. The vitality value is evaluated by the behavior characteristics and physiological reactions of the fish, and involves one or more indexes such as the activity frequency and range of the fish, the reaction speed to external stimuli such as the reaction to food or the reaction to escape from predators, the heart rate and breathing frequency of the fish. In some specific embodiments, an underwater camera can be arranged in the aquaculture area. The vitality value can be the number of times that the fish passes through the field of view of the underwater camera within a certain time range. The more the number of times, the higher the vitality value of the fish. The lower the number of times, the lower the vitality value of the fish. The vitality value of the fish under different water flow rates can be obtained through testing and practice, and then the minimum vitality value of the fish that can normally grow under different temperatures (or the same temperature) and different water flow rates is obtained. The specific evaluation method of the fish vitality value is not the focus of the present application, and is only briefly described here. After determining the minimum vitality value of the fish in the aquaculture pond that can adapt to survive under the environmental temperature, the corresponding first historical water flow rate is determined through the minimum vitality value.

[0065] The historical data can also be used to determine the first target water flow rate corresponding to the standard dissolved oxygen amount of the aquaculture pond at a specific ambient temperature. For example, a model is established using historical data to predict the change in dissolved oxygen amount after a target time period at the current ambient temperature, thereby obtaining the corresponding first target water flow rate to maintain the water quality within a range suitable for fish survival, thereby reducing fish stress caused by environmental changes and reducing the incidence of disease. The first historical water flow rate is the maximum water flow rate adjusted in the aquaculture pond under the same ambient temperature and the same fish in past aquaculture practices. The first target water flow rate is the water flow rate that is predicted to prevent the formation of dead water in the aquaculture pond after a target time period at the current ambient temperature. The target time period refers to the time period during which the ambient temperature exceeds the first preset temperature range. For example, through the query and analysis of historical data, it can be obtained that the first historical water flow rate corresponding to the minimum activity value of fish is 1 m / s when the ambient temperature is 32°C to 38°C. The target time period during which the ambient temperature remains at 32°C to 38°C is 6 hours. During the target time period, the ambient temperature will cause the water temperature in the aquaculture pond to gradually increase, and the dissolved oxygen amount in the aquaculture pond will gradually decrease, which is prone to form dead water. Therefore, it can be predicted that the first target water flow rate that can still maintain sufficient dissolved oxygen amount in the aquaculture pond after the target time period at the ambient temperature is 0.7 m / s, and the current water flow rate is 0.3 m / s. Then, the current water flow rate is limited to increase by a certain amount based on the first historical water flow rate and the first target water flow rate, which can promote water flow fusion and prevent the formation of dead water regions, and also avoid the beneficial effect of excessive increase in water flow rate affecting fish survival.

[0066] Specifically, in step S3, the normal dissolved oxygen amount for most fish to grow healthily is 3-4 mg / L, the ideal dissolved oxygen amount is 5-6 mg / L, and the saturated dissolved oxygen amount is 7-9 mg / L. In order to prevent the formation of dead water regions, the standard dissolved oxygen amount can be set to 6 mg / L. This value is only an embodiment, and the specific standard dissolved oxygen amount should be set according to the actual farmed fish. Setting the standard dissolved oxygen amount to be higher than the normal dissolved oxygen amount ensures that the dissolved oxygen amount in the aquaculture pond has a high fault tolerance when the ambient temperature gradually increases or decreases, and can still maintain the normal growth of fish after gradually decreasing with the passage of the target time period. When the current water flow rate is less than the first target water flow rate, it proves that the dissolved oxygen amount in the aquaculture pond is insufficient to maintain normal water flow fusion in a high or low temperature environment. If the first target water flow rate is less than or equal to the first historical water flow rate, it indicates that increasing the water flow rate will not affect the fish, and the system can automatically control the current water flow rate to increase to the first target water flow rate. Through scientific methods and automatic control systems, the water flow rate is adjusted in time to prevent the formation of dead water regions, and an appropriate living environment for fish is created to avoid affecting the health of fish due to excessive increase in water flow rate.

[0067] If the first target water flow rate is greater than the first historical water flow rate, it indicates that blindly increasing the water flow rate will threaten the survival of fish, and human intervention is needed. Therefore, the system sends a first reminder information to remind the user to manually adjust the current water flow rate of the aquaculture pond. The specific method of manual adjustment can be: obtaining the variety of fish in the aquaculture pond, and determining the ideal water flow rate increment according to the variety of fish, and adjusting the current water flow rate according to the ideal water flow rate increment.

[0068] For example, assuming that the fish in the aquaculture pond are carp, the current water flow rate is 0.3 m / s, the first historical water flow rate is 1 m / s, and the first target water flow rate is 1.1 m / s, which is greater than the first historical water flow rate. The ideal water flow rate increment that carp can withstand for normal growth is obtained as 0.2 m / s per hour, and the water flow rate is adjusted at this increment, and it is expected that the water flow rate adjustment will be completed in 4 hours. In this process, the underwater camera is used to monitor the abnormal behavior of the fish in real time, such as slow swimming or gathering in areas with slower water flow, and the increment plan is immediately adjusted to slow down the growth rate or temporarily stop the increment until the fish returns to normal. For example, when the actual water flow rate reaches 0.7 m / s, the water flow rate continues to increase at a rate of 0.2 m / s per hour, and the underwater camera finds that the fish exhibit abnormal behavior. If the increment plan is adjusted, the water flow rate is increased at a rate of 0.05 m / s per hour, slowly increasing the water flow to improve the adaptability and adaptation time of the fish, gradually increasing to the first target water flow rate, achieving a win-win of preventing the formation of dead water and protecting the healthy growth of fish. However, using this method, there may still be a problem that when the actual water flow rate reaches 1 m / s, even if the water flow rate is increased at the minimum increment, the fish will exhibit abnormal behavior. At this time, the user can stop the increment, and detect the current dissolved oxygen content when the current water flow rate is 1 m / s, and start the oxygenator according to the current dissolved oxygen content to make the current dissolved oxygen content reach the standard dissolved oxygen content, or put in an appropriate amount of chemical oxygenating agent to make the current dissolved oxygen content reach the standard dissolved oxygen content. The specific selection method can be determined according to actual experience, for example, if the weather forecast indicates that there will be consecutive high temperature weather, in order to ensure the water quality environment of the aquaculture pond, the oxygenator should be turned on to increase the dissolved oxygen content for a long time; if there is only one day of high temperature weather, a chemical oxygenating agent can be used to temporarily and quickly increase the dissolved oxygen content. Thus, the normal growth of fish can be ensured during the prevention of dead water formation.

[0069] In step S4, the current water flow rate is greater than or equal to the first target water flow rate, indicating that the dissolved oxygen content of the aquaculture pond at this time is sufficient to resist the influence of the environmental temperature, and it is not easy to form a dead water area, and the fish can adapt to the current water flow rate for normal growth. Therefore, the current water flow rate is maintained unchanged, which can avoid unnecessary water flow changes that may cause potential stress reactions to the fish.

[0070] In addition, if the obtained first historical water flow rate is less than or equal to the current water flow rate, it is not appropriate to increase the current water flow rate, and other methods such as cleaning the sediment in the culture pond, reducing the density of fish culture, or changing the topography of the culture pond can be used to prevent the formation of dead water area.

[0071] In the above method of adjusting the water flow rate by monitoring the ambient temperature, there is also a problem that the ambient temperature does not directly affect the temperature of the pond water in the culture pond. Although the ambient temperature is too high or too low, it can reflect the problem of temperature stratification of the upper and lower layers of the culture pond to some extent, but this reflection is not direct, and it is easy to misjudge, and then unnecessarily increase the water flow rate, waste energy consumption. Therefore, in some preferred embodiments, step S1 further comprises:

[0072] S21: When the ambient temperature exceeds the first preset temperature range, and the temperature change amount is less than or equal to the second preset temperature value, obtaining the first temperature of the upper layer of the culture pond and the second temperature of the lower layer of the culture pond;

[0073] S22: When the first temperature difference between the first temperature and the second temperature is greater than or equal to the preset temperature difference, obtaining the current water flow rate of the culture pond;

[0074] S23: Calculate the average value of the sum of the first temperature and the second temperature to obtain a preset mixed pond water temperature, and obtain a second historical water flow rate corresponding to the minimum activity value of the fish under the preset mixed pond water temperature according to the fish species, and a second target water flow rate corresponding to the standard dissolved oxygen amount after the target time under the preset mixed pond water temperature according to the historical data prediction;

[0075] S24: When the second target water flow rate is different from the first target water flow rate, compare the current water flow rate with the second target water flow rate, if the second target water flow rate is less than or equal to the second historical water flow rate, increase the current water flow rate to reach the second target water flow rate; if the second target water flow rate is greater than the second historical water flow rate, a first reminder information is sent to remind the user to manually adjust the current water flow rate of the culture pond; when the current water flow rate is greater than or equal to the second target water flow rate, the current water flow rate remains unchanged.

[0076] When the ambient temperature exceeds the first preset temperature range and the temperature change amount is less than or equal to the second preset temperature value, in order to more accurately analyze the temperature stratification of the pond water, temperature sensors can be arranged at different depths of the pond to obtain the first temperature of the upper layer of pond water and the second temperature of the lower layer of pond water, respectively. By measuring the temperature of the upper layer and the lower layer of pond water, it can be determined whether the water body has stratified. The upper layer of pond water and the lower layer of pond water are distinguished by the depth of light, and the specific depth of the upper layer of pond water is determined by measuring the light transmittance or light attenuation rate of the water body. This value is not fixed and can be affected by factors such as water clarity and sunlight penetration. It is usually in the range of 1-5 meters of water depth. Therefore, in actual application, the upper layer of pond water and the lower layer of pond water can be distinguished by actual measurement.

[0077] The preset temperature difference is a temperature value set by the technician according to historical data. When the temperature difference reaches the preset temperature difference, it usually means that the risk of water stratification increases and it is more likely to form a dead water area. When the temperature difference between the first temperature and the second temperature is greater than or equal to the preset temperature difference, monitoring the current flow rate can prevent the formation of dead water due to temperature stratification and ensure the flowability of the water body.

[0078] By calculating the average water temperature of the upper and lower layers of pond water, the specific temperature of the pond water after mixing (i.e., the preset mixed pond water temperature) can be predicted, which facilitates the determination of the minimum vitality value of the fish at the preset mixed pond water temperature and the determination of the second historical flow rate based on the minimum vitality value. Then, according to the historical data, the second target flow rate is predicted when the dissolved oxygen amount meets the condition after the preset mixed pond water temperature has passed the target time. The second target flow rate predicted by the specific temperature of the pond water is more accurate than the first target flow rate predicted by the ambient temperature. Therefore, when the second target flow rate is consistent with the first target flow rate, step S3 can be performed. If they are not consistent, the current flow rate is limited to an incremental amplitude based on the second historical flow rate and the second target flow rate, which can promote the fusion of the flow and prevent the formation of dead water areas, while avoiding the negative effects of excessive flow rate increase on fish survival. For example, in actual application, assuming that the upper water temperature of the pond is 28°C and the lower water temperature is 24°C, and the preset mixed pond water temperature is the average of the two, which is 26°C. Historical data shows that the minimum vitality value of the fish corresponds to a second historical flow rate of 0.8 meters per second at a water temperature of 26°C, and the second target flow rate is 0.7 meters per second. The current flow rate of the pond is 0.3 meters per second. Through the control system, the current flow rate is gradually increased until it reaches 0.7 meters per second.

[0079] In the above process, the increase of the current water flow rate is based on the increase of the water flow rate of the global aquaculture pond water. The aquaculture pond has a large area, which is several tens of mu or several hundred mu. The increase of the global water flow rate will cause energy waste in the area where dead water is not easy to form. Therefore, in some preferred embodiments, step S1 is followed by:

[0080] S25: When the environmental temperature exceeds the first preset temperature range and the temperature change is less than or equal to the second preset temperature value, the aquaculture pond is divided into multiple sub-areas;

[0081] S26: Obtain the third temperature of the water in each sub-area, and determine the abnormal sub-area corresponding to the abnormal temperature according to the third temperature;

[0082] S27: Obtain the current local water flow rate of the abnormal sub-area, and determine the third historical water flow rate corresponding to the minimum activity value of the fish that can adapt to survival at the non-abnormal temperature in the third temperature according to the fish species, and predict the third target water flow rate corresponding to the standard dissolved oxygen amount when the dissolved oxygen amount of the aquaculture pond meets the standard dissolved oxygen amount after a target time at the abnormal temperature in the third temperature according to the historical data;

[0083] S28: When the third target water flow rate is different from the first target water flow rate, compare the current water flow rate with the third target water flow rate. If the third target water flow rate is less than or equal to the third historical water flow rate, increase the current water flow rate to reach the third target water flow rate. If the third target water flow rate is greater than the third historical water flow rate, a second reminder information is sent to remind the user to manually adjust the current local water flow rate of the abnormal sub-area. When the current local water flow rate is greater than or equal to the third historical water flow rate, the current local water flow rate is kept unchanged.

[0084] The third temperature of each sub-region can be obtained by a thermometer arranged at different positions in the aquaculture pond. In order to avoid the formation of dead water area, the water temperature of each area of the aquaculture pond should be kept consistent in an ideal case, and the difference in water temperature will lead to the formation of a dead water area. According to this situation, it can be inferred that the temperature of each sub-region of the aquaculture pond should be maintained at the same temperature value (allowing a small amount of error, and the error range is set by the technician), and if the third temperature of one or more sub-regions is inconsistent with the third temperature of most other sub-regions, it is proved that the temperature is an abnormal temperature, and the one or more sub-regions corresponding to the abnormal temperature are abnormal sub-regions. The abnormal sub-region is discovered in time, and the water flow is adjusted according to the current local water flow speed and temperature conditions of the abnormal sub-region, so that the water flow in the abnormal sub-region is fully mixed with the water flow in other normal areas, the range of reasonably controlling the water flow increase is realized, the energy consumption is reduced, and the breeding cost is reduced.

[0085] Specifically, in actual application, the aquaculture pond is divided into four equal sub-regions A, B, C and D, and the water temperature (third temperature) of each sub-region is measured. It is found that the water temperature of sub-region C is 30°C, and the water temperature of sub-regions A, B and D is 25°C. The water temperature of sub-region C is much higher than that of other sub-regions, and it is determined as an abnormal sub-region. The current local water flow speed of sub-region C is measured to be 0.2 meters per second. Historical data shows that at a water temperature of 25°C, the minimum activity value corresponding to the third historical water flow speed at which fish can adapt to survive is 1 meter per second, and the third target water flow speed is 1 meter per second. The difference in water flow speed is calculated as follows: 1 meter per second - 0.2 meters per second = 0.8 meters per second. Then gradually increase the water flow speed of sub-region C, control the water flow to grow at a suitable speed, until the set flow speed is reached.

[0086] In the above process, if the water flow speed of a sub-region is frequently increased, it indicates that this area is prone to form dead water. In order to solve this problem and avoid frequent increase of water flow speed and excessive energy consumption, the breeding density of the frequent abnormal sub-region can be obtained, and whether the breeding density of the frequent abnormal sub-region is too high to cause slow water flow and thus prone to form a dead water area can be analyzed.

[0087] Specifically, step S28 includes the following steps:

[0088] S281: Obtain the frequent abnormal sub-region in which the number of times of being determined as an abnormal sub-region in a preset time period exceeds a preset number of times;

[0089] S282: Obtain the actual breeding density in the frequent abnormal sub-region, and determine whether the actual breeding density meets the standard breeding density;

[0090] S283: When the actual breeding density does not meet the standard breeding density, a third reminder information is sent to remind the user to adjust the actual breeding density so that the actual breeding density meets the standard breeding density.

[0091] Wherein, the sub-area with frequent abnormal temperature is identified so as to take targeted measures. Specifically, the breeding density of the sub-area with frequent abnormal temperature can be monitored to ensure that it is within the appropriate range. When it is found that the breeding density does not meet the standard, it can be analyzed that the breeding density of the sub-area is too high, which causes the water flow of the sub-area to fail to be well integrated with the water flow of other sub-areas, so that the abnormality frequently occurs. Therefore, the system can send a third reminder information to remind the user to make adjustment and optimize the breeding management.

[0092] Specifically, in actual application, it is assumed that a breeding pond is divided into four sub-areas A, B, C and D. The judgment standard of the sub-area with frequent abnormality is that, in the monitoring of a continuous month, if the water temperature of a sub-area is abnormal (too high or too low) more than 10 times, the sub-area is marked as a sub-area with frequent abnormality. After a month of monitoring, it is found that the abnormal times of the sub-area C reaches 15 times, which exceeds the preset 10 times. The actual breeding density of the sub-area C is checked, and it is found that there are 20 fish per cubic meter of water body, while the standard breeding density should be 15. Since the actual breeding density does not meet the standard, the system sends a third reminder information to the user, suggesting to reduce the amount of fry in the sub-area C to reduce the breeding density to 15 per cubic meter. Through monitoring and adjustment, the dead water area caused by too high breeding density is prevented.

[0093] Further, after step S283, the following steps are included:

[0094] S284: When the actual breeding density meets the standard breeding density, the sediment accumulation amount of the sub-area with frequent abnormality is obtained, and it is judged whether the sediment accumulation amount exceeds the preset allowed accumulation amount;

[0095] S285: When the sediment accumulation amount is greater than or equal to the preset allowed accumulation amount, a fourth reminder information is sent to remind the user to clean the sediment.

[0096] Wherein, when the actual breeding density meets the standard breeding density, the sediment accumulation amount of the sub-area with frequent abnormality can also be obtained, and by controlling the sediment accumulation, the anaerobic decomposition of organic matter is reduced to avoid the excessive sediment affecting the water quality and the health of the breeding organisms to form a dead water area.

[0097] Specifically, in actual application, the actual breeding density of the frequently abnormal sub-region C monitored conforms to the standard, further checking the sediment accumulation amount of the region, it is found that the sediment accumulation amount is 10 centimeters. Since the sediment accumulation amount exceeds the preset allowable accumulation amount of 8 centimeters, the fourth prompt information is sent out, prompting the user to clean the sediment. Excessive sediment can become a breeding ground for pathogens, thereby increasing the risk of forming dead water areas. Through monitoring and adjustment, the formation of dead water areas due to excessive sediment accumulation is prevented, and the number of times of increasing the water flow rate is reduced, thereby reducing the energy consumption cost.

[0098] Further, after step S285, the following steps are included:

[0099] S286: When the sediment accumulation amount is less than the preset allowable accumulation amount, obtaining the first region topography of the frequently abnormal sub-region;

[0100] S287: According to the first region topography, the fifth prompt information is sent out, prompting the user to adjust the first region topography to reduce the protruding part in the first region topography.

[0101] Wherein, by adjusting the topography to reduce the protruding part, the water flow distribution and sediment distribution are optimized. Optimizing the topography can improve the water flow conditions, reduce dead water areas, and improve the utilization rate of feed and oxygen. Specifically, in actual application, after the sediment is cleaned, the sediment accumulation amount of the sub-region C is 5 centimeters, which does not exceed the preset allowable accumulation amount, and the first region topography data of the frequently abnormal sub-region is obtained. Analyzing the first region topography, it is found that there are some protruding topography parts, which may cause poor water flow and sediment accumulation. The fifth prompt information is sent out, suggesting that the user adjusts the topography, such as flattening the bottom of the breeding pond, to reduce the protruding part, so as to optimize the water flow conditions and sediment distribution. Through monitoring and adjustment, the formation of dead water areas due to excessive sediment accumulation is prevented, and the number of times of increasing the water flow rate is reduced, thereby reducing the energy consumption cost.

[0102] Further, after step S28, the following steps are included:

[0103] S291: Obtaining long-term abnormal sub-regions whose existence time exceeds a preset time length in a preset time period;

[0104] S292: Obtaining the actual breeding density in the long-term abnormal sub-region, and judging whether the actual breeding density conforms to the standard breeding density;

[0105] S293: When the actual breeding density does not conform to the standard breeding density, the third prompt information is sent out, prompting the user to adjust the actual breeding density to make the actual breeding density conform to the standard breeding density.

[0106] Wherein, by identifying that there are sub-regions with a duration exceeding a preset duration within a preset time period, these regions may need special attention, i.e. there are abnormal sub-regions that cannot be merged with the water flow of other normal sub-regions within the preset duration after the water flow velocity is increased, and the reason may be that the stocking density in the long-term abnormal sub-region is too high, and the fish population hinders the water flow velocity, so that even if the local water flow velocity is increased, the actual merging effect may not be ideal, but a lot of energy is wasted. Therefore, when it is obtained that the actual stocking density in the long-term abnormal sub-region is too high, a third reminder information can be sent to remind the user to adjust the actual stocking density so that the actual stocking density meets the standard stocking density.

[0107] Specifically, in actual application, it is assumed that a culture pond is divided into multiple sub-regions, and the identification standard of abnormal sub-regions is set: if the cumulative duration of abnormality of a sub-region exceeds 15 days within 30 consecutive days, it is marked as a long-term abnormal sub-region. The monitoring data shows that the cumulative duration of abnormality of sub-region C within 30 days reaches 20 days, which exceeds the preset 15 days. By checking the actual stocking density of sub-region C, it is found that there are 20 fish per cubic meter of water, while the standard stocking density should not exceed 15. Since the actual stocking density does not meet the standard, the system sends a third reminder information to the breeder, suggesting to reduce the fry stocking amount of sub-region C or take other measures such as increasing water flow exchange to reduce the stocking density to less than 15 per cubic meter. Through monitoring and adjustment, the formation of dead water region due to high stocking density is prevented.

[0108] Wherein, in specific application, the reason for the formation of long-term abnormal sub-region may also be that the fish in the region are not adapted to survive in the water area with increased water flow velocity. In order to ensure the health of the fish, the water flow velocity is increased at a smaller speed, so that it takes more time to increase the current water flow velocity to the target water flow velocity, causing large energy cost consumption. In this case, the topography of the long-term abnormal sub-region can be changed, or the sediments in it can be salvaged to improve the water flow merging of the long-term abnormal sub-region with other normal regions, so as to prevent the formation of dead water region.

[0109] From the above, the application provides a method for adjusting the water flow in a breeding pond. By obtaining the environmental temperature of the breeding pond and its change amount, the state of the breeding environment can be monitored in real time, providing accurate data support for subsequent decision-making. Monitoring the temperature change amount helps to predict the trend of the environmental temperature, so that measures can be taken in advance to avoid the environmental temperature remaining high after exceeding the maximum temperature value in the first preset temperature range or remaining low after falling below the minimum temperature value, causing uneven temperature of the water in the breeding pond and forming dead water. When the environmental temperature exceeds the first preset temperature range and the change amount is small, the current water flow rate is obtained to assess whether the water flow needs to be adjusted to adapt to the temperature change and maintain the stability of the water quality and the fish growth environment. By referring to historical data, the adjustment strategy for the water flow rate can be more scientifically formulated to avoid unnecessary stress on the fish caused by blind adjustment. By increasing the current water flow rate based on the historical water flow rate, the water environment of the breeding pond can be gradually improved, promoting the uniform mixing of the water body and reducing the dead water area caused by the decrease in dissolved oxygen in the breeding pond due to temperature stratification. Limiting the increase in the water flow rate within a safe range can avoid the impact on the fish caused by rapid changes in the water flow rate, ensuring the comfortable and healthy growth of the fish. When the first target water flow rate can be achieved, the water flow is automatically adjusted to ensure the survival conditions of the fish. When the first target water flow rate exceeds the first historical water flow rate, the user is reminded to intervene for manual adjustment, and the user reminder mechanism ensures that necessary manual intervention can be made in special cases, increasing the flexibility and safety of the system. Thus, the application has the beneficial effects of preventing the formation of dead water areas and avoiding the impact on the fish caused by rapid changes in the water flow rate.

[0110] In a second aspect, the application provides a device for adjusting the water flow in a breeding pond, comprising:

[0111] The first obtaining module 201 is configured to obtain the environmental temperature of the breeding pond and the temperature change amount of the environmental temperature within a continuous time period.

[0112] The second obtaining module 202 is configured to obtain the current water flow rate of the breeding pond when the environmental temperature exceeds the first preset temperature range and the temperature change amount is less than or equal to the second preset temperature value, and determine the first historical water flow rate corresponding to the minimum activity value of the fish that can adapt to the survival environment at the environmental temperature according to the fish species, and determine the first target water flow rate corresponding to the standard dissolved oxygen amount of the breeding pond after a target time period at the environmental temperature according to the historical data.

[0113] The first adjusting module 203 is configured to, when the current water flow rate is less than the first target water flow rate, if the first target water flow rate is less than or equal to the first historical water flow rate, increase the current water flow rate to the first target water flow rate; if the first target water flow rate is greater than the first historical water flow rate, send a first reminder information to remind the user to manually adjust the current water flow rate of the aquaculture pond.

[0114] The second adjusting module 204 is configured to, when the current water flow rate is greater than or equal to the first target water flow rate, keep the current water flow rate unchanged.

[0115] The first obtaining module 201 can be a temperature sensor, such as a DS18B20 digital temperature sensor, for real-time monitoring of the environmental temperature of the aquaculture pond; the first obtaining module 201 is connected with the data processing software in the control system, for transmitting the environmental temperature data. The second obtaining module 202 includes a flowmeter, such as an electromagnetic flowmeter or an ultrasonic flowmeter, for measuring the water flow rate; the second obtaining module 202 is connected with the logic control software in the control system, for being controlled to obtain the current water flow rate when the environmental temperature and the temperature change meet the set conditions; the second obtaining module 202 further includes a historical database for storing historical water temperature and corresponding fish activity data, a computing device for processing and analyzing the historical data to determine the adaptability of the fish; the second obtaining module 202 is connected with the data analysis software in the control system, and the first historical water flow rate and the first target water flow rate are obtained after the data analysis software analyzes the historical data. The first adjusting module 203 and the second adjusting module 204 include a water pump and a valve for adjusting the size of the water flow, an actuator such as an electric or pneumatic actuator for controlling the opening and closing of the valve, and the second adjusting module 204 is connected with the control software in the control system, and sends an adjusting instruction after the control software analyzes the relationship among the first historical water flow rate, the first target water flow rate and the current water flow rate; the second adjusting module 204 adjusts the water pump and the valve according to the instruction of the control software.

[0116] Specifically, in actual application, by monitoring the ambient temperature and the temperature change amount, the possible temperature stratification impact on the culture pond can be analyzed and predicted, providing a data basis for preventing the formation of dead water area; the first preset temperature range is set by the technician according to the ambient temperature for the healthy survival of the cultured fish, and the first preset temperature range includes a maximum temperature value and a minimum temperature value, for example, if the first preset temperature range is set to 25°C to 30°C, the maximum temperature value is 30°C, and the minimum temperature value is 25°C; the ambient temperature value exceeding the first preset temperature range means that the ambient temperature is greater than the maximum temperature value or less than the minimum temperature value. The second preset temperature value is set by the technician according to the specific division of the continuous time period, for example, if the continuous time period is divided by hours, and in general, the temperature change amount within 1 h will not exceed 2°C, then the second preset temperature value can be set to 2°C. In actual application, in one day of detection, it is found that the minimum ambient temperature is 32°C, which has exceeded the maximum temperature value, and the temperature change amount within the continuous time period is 1°C, which is less than the second preset temperature value, indicating that the ambient temperature is continuously high, so it can be predicted that under the influence of continuous high temperature, the temperature of the culture pond water is easy to stratify up and down, and then form a dead water area. To prevent the formation of dead water area, the current water flow rate can be increased in advance to promote the fusion of the upper and lower layers of water flow, but blindly increasing the current water flow rate is easy to cause impact on the fish in the culture pond, which is not conducive to the healthy growth of the fish.

[0117] Specifically, the historical data at least includes the ambient temperature records of the culture pond in different time periods in the past, the influence of the water flow rate of the culture pond on the fish activity value under different ambient temperatures, the activity value of different fish under different ambient temperatures, and the relationship between the specific water temperature data and the dissolved oxygen amount under the historical ambient temperature. The minimum activity value of the fish that can survive under the ambient temperature can be obtained from the above historical data and the fish species in the culture pond, wherein the activity value is evaluated by the behavior characteristics and physiological reactions of the fish, involving one or more indicators such as the activity frequency and range of the fish, the reaction speed to external stimuli such as the reaction to food or the reaction to escape from predators, the heart rate and breathing rate of the fish, etc. In some specific embodiments, an underwater camera can be arranged in the culture area, and the activity value can be the number of times the fish passes through the field of view of the underwater camera within a certain time range. The more the number of times, the higher the activity value of the fish, and the lower the number of times, the lower the activity value of the fish. The activity value of the fish under different water flow rates can be obtained through testing and practice, and then the minimum activity value of the fish that can grow normally under different temperatures (or the same temperature) and different water flow rates is obtained. The specific evaluation method of the activity value of the fish is not the focus of this application, and only a brief description is given here. After determining the minimum activity value of the fish in the culture pond that can adapt to survive under the ambient temperature, the corresponding first historical water flow rate is determined by the minimum activity value.

[0118] The historical data can also be used to determine the first target water flow rate corresponding to the standard dissolved oxygen amount of the aquaculture pond at a specific ambient temperature. For example, a model is established using historical data to predict the change in dissolved oxygen amount after a target time period at the current ambient temperature, thereby obtaining the corresponding first target water flow rate to maintain the water quality within a range suitable for fish survival, thereby reducing fish stress caused by environmental changes and reducing the incidence of disease. The first historical water flow rate is the maximum water flow rate adjusted in the aquaculture pond under the same ambient temperature and the same fish in past aquaculture practices. The first target water flow rate is the water flow rate that is predicted to prevent the formation of dead water in the aquaculture pond after a target time period at the current ambient temperature. The target time period refers to the time period during which the ambient temperature exceeds the first preset temperature range. For example, through the query and analysis of historical data, it can be obtained that the first historical water flow rate corresponding to the minimum activity value of fish is 1 m / s when the ambient temperature is 32°C to 38°C. The target time period during which the ambient temperature remains at 32°C to 38°C is 6 hours. During the target time period, the ambient temperature will cause the water temperature in the aquaculture pond to gradually increase, and the dissolved oxygen amount in the aquaculture pond will gradually decrease, which is prone to form dead water. Therefore, it can be predicted that the first target water flow rate that can still maintain sufficient dissolved oxygen amount in the aquaculture pond after the target time period at the ambient temperature is 0.7 m / s, and the current water flow rate is 0.3 m / s. Then, the current water flow rate is limited to increase by a certain amount based on the first historical water flow rate and the first target water flow rate, which can promote water flow fusion and prevent the formation of dead water regions, and also avoid the beneficial effect of excessive increase in water flow rate affecting fish survival.

[0119] Specifically, in step S3, the normal dissolved oxygen amount for most fish to grow healthily is 3-4 mg / L, the ideal dissolved oxygen amount is 5-6 mg / L, and the saturated dissolved oxygen amount is 7-9 mg / L. In order to prevent the formation of dead water regions, the standard dissolved oxygen amount can be set to 6 mg / L. This value is only an embodiment, and the specific standard dissolved oxygen amount should be set according to the actual farmed fish. Setting the standard dissolved oxygen amount to be higher than the normal dissolved oxygen amount ensures that the dissolved oxygen amount in the aquaculture pond has a high fault tolerance when the ambient temperature gradually increases or decreases, and can still maintain the normal growth of fish after gradually decreasing with the passage of the target time period. When the current water flow rate is less than the first target water flow rate, it proves that the dissolved oxygen amount in the aquaculture pond is insufficient to maintain normal water flow fusion in a high or low temperature environment. If the first target water flow rate is less than or equal to the first historical water flow rate, it indicates that increasing the water flow rate will not affect the fish, and the system can automatically control the current water flow rate to increase to the first target water flow rate. Through scientific methods and automatic control systems, the water flow rate is adjusted in time to prevent the formation of dead water regions, and an appropriate living environment for fish is created to avoid affecting the health of fish due to excessive increase in water flow rate.

[0120] If the first target water flow rate is greater than the first historical water flow rate, it indicates that blindly increasing the water flow rate will threaten the survival of fish, and human intervention is needed. Therefore, the system sends a first reminder information to remind the user to manually adjust the current water flow rate of the aquaculture pond. The specific method of manual adjustment can be: obtaining the species of fish in the aquaculture pond, and determining the ideal water flow rate increment according to the species of fish, and adjusting the current water flow rate according to the ideal water flow rate increment.

[0121] Specifically, by dividing the aquaculture pond into multiple sub-regions, fine management of different regions in the aquaculture pond can be achieved. The division area of the sub-region can be divided by the technical personnel according to the total area of the actual aquaculture pond. The third temperature of each sub-region can be obtained by the thermometer arranged at different positions in the aquaculture pond. In order to avoid the formation of dead water area, the water temperature of each region of the aquaculture pond should be consistent in the ideal case, and the difference in water temperature will lead to the formation of dead water area. According to this situation, it can be inferred that the temperature of each sub-region of the aquaculture pond should maintain the same temperature value (allowing a small amount of error, the error range is set by the technical personnel), if the third temperature of one or more sub-regions is inconsistent with the third temperature of most other sub-regions, then it proves that the temperature is an abnormal temperature, and the one or more sub-regions corresponding to the abnormal temperature are abnormal sub-regions. Timely find the abnormal sub-region, and adjust the water flow according to the current local water flow rate and temperature conditions of the abnormal sub-region, realize reasonable control of the range of water flow increment, reduce energy consumption, and reduce the cost of aquaculture.

[0122] Specifically, by identifying the sub-region where the abnormal temperature frequently occurs, targeted measures can be taken. Specifically, by monitoring the breeding density of the frequently abnormal sub-region, it can be ensured that it is within the appropriate range. When it is found that the breeding density does not meet the standard, it can be analyzed that the breeding density of this region is too high, which leads to the fact that the water flow of this region cannot be well integrated with the water flow of other regions, so that the abnormality frequently occurs. Therefore, the system can send a third reminder information to remind the user to adjust and optimize the aquaculture management.

[0123] Specifically, when the actual breeding density meets the standard breeding density, the sediment accumulation amount of the frequently abnormal sub-region can also be obtained, by controlling the sediment accumulation, reducing the anaerobic decomposition of organic matter, and avoiding the formation of dead water area due to the influence of excessive sediment on water quality and the health of the breeding organisms.

[0124] Specifically, by adjusting the terrain to reduce the protruding part, the water flow distribution and sediment distribution are optimized. Optimizing the terrain can improve water flow conditions, reduce dead water areas, and improve the utilization rate of feed and oxygen. Specifically, in practical application, after cleaning the sediment, the amount of sediment accumulation in sub-area C is monitored to be 5 centimeters, which does not exceed the preset allowed accumulation amount, and the first regional terrain data of the frequent abnormal sub-area is obtained. Analyzing the first regional terrain, it is found that there are some protruding terrain parts, which may cause poor water flow and sediment accumulation. The fifth reminder information is sent out, suggesting that the user reduces the protruding part by adjusting the terrain, such as flattening the bottom of the breeding pond, to optimize the water flow conditions and sediment distribution. Through monitoring and adjustment, the formation of dead water areas due to too many dead corners in the first regional terrain is prevented, and the number of times of increasing the water flow velocity is reduced, and the energy cost is reduced.

[0125] Specifically, by identifying that there are sub-areas with a duration longer than the preset duration within the preset time period, these areas may need special attention, i.e. there are abnormal sub-areas that cannot be merged with other normal sub-areas after increasing the water flow velocity within the preset duration. The reason may be that the breeding density in the long-term abnormal sub-area is too high, and the fish population hinders the water flow velocity. Even if the local water flow velocity is increased, the actual merging effect may not be ideal, but it wastes too much energy. Therefore, when the actual breeding density in the long-term abnormal sub-area is obtained, the third reminder information can be sent out to remind the user to adjust the actual breeding density so that the actual breeding density meets the standard breeding density.

[0126] From the above, the application provides a kind of aquaculture pond water flow regulating device, by obtaining the environmental temperature of aquaculture pond and its change, the state of breeding environment can be monitored in real time, provide accurate data support for subsequent decision-making;Monitoring temperature change helps to predict the trend of environmental temperature, so that measures are taken in advance, avoid the maximum temperature in the first preset temperature interval after environmental temperature continues high temperature, or below the minimum temperature value after continuous low temperature, cause the temperature of aquaculture pond water to be uneven, form dead water.When the environmental temperature exceeds the first preset temperature interval and the change is small, the current water flow rate is obtained to evaluate whether the water flow needs to be adjusted to adapt to temperature change, keep the stability of water quality and fish growth environment;Through the reference of historical data, the adjustment strategy of water flow rate can be more scientifically formulated, and unnecessary pressure on fish caused by blind adjustment can be avoided.According to the current water flow rate of historical water flow rate, the water environment of aquaculture pond can be gradually improved, promote the uniform mixing of water body, reduce the dead water area formed by the decrease of dissolved oxygen content of aquaculture pond caused by temperature stratification.Limit the increase amplitude of water flow rate in the safe range, the impact on fish caused by the rapid change of water flow rate can be avoided, and the comfortable and healthy growth of fish can be ensured.When the first target water flow rate can be realized, automatically adjust water flow, ensure the survival conditions of fish.When the first target water flow rate exceeds the first historical water flow rate, remind the user to intervene, manual adjustment, user reminder mechanism ensures that necessary manual intervention can be carried out in special circumstances, increase the flexibility and safety of system.Therefore, the application has the beneficial effects of preventing the formation of dead water area and avoiding the impact on fish caused by the rapid change of water flow rate.

[0127] Please refer to Figure 3 , Figure 3A structural schematic diagram of an electronic device provided by an embodiment of the present application, the present application provides an electronic device 3, comprising: a processor 301 and a memory 302, the processor 301 and the memory 302 are interconnected and communicate with each other through a communication bus 303 and / or other forms of connection mechanism (not marked), the memory 302 stores computer readable instructions executable by the processor 301, when the electronic device runs, the processor 301 executes the computer readable instructions, to execute the method in any optional implementation manner of the above-mentioned embodiment, to realize the following functions: obtaining the environmental temperature of the breeding pond and the temperature variation of the environmental temperature in the continuous time period; when the environmental temperature exceeds the first preset temperature interval, and the temperature variation is less than or equal to the second preset temperature value, obtaining the current flow rate of the breeding pond, and determining the first historical flow rate corresponding to the minimum activity value of the fish that can adapt to survive under the environmental temperature according to the fish variety, and the first target flow rate corresponding to the dissolved oxygen amount of the breeding pond that meets the standard dissolved oxygen amount after a target time length under the environmental temperature is predicted according to the historical data; when the current flow rate is less than the first target flow rate, if the first target flow rate is less than or equal to the first historical flow rate, the current flow rate is amplified, so that the current flow rate reaches the first target flow rate; if the first target flow rate is greater than the first historical flow rate, a first reminder information is sent to remind the user to manually adjust the current flow rate of the breeding pond; when the current flow rate is greater than or equal to the first target flow rate, the current flow rate is kept unchanged.

[0128] The embodiment of the present application provides a computer readable storage medium, which stores a computer program, when the computer program is executed by a processor, the method in any optional implementation manner of the above-mentioned embodiment is executed, to realize the following functions: obtaining the environmental temperature of the breeding pond and the temperature variation of the environmental temperature in the continuous time period; when the environmental temperature exceeds the first preset temperature interval, and the temperature variation is less than or equal to the second preset temperature value, obtaining the current flow rate of the breeding pond, and determining the first historical flow rate corresponding to the minimum activity value of the fish that can adapt to survive under the environmental temperature according to the fish variety, and the first target flow rate corresponding to the dissolved oxygen amount of the breeding pond that meets the standard dissolved oxygen amount after a target time length under the environmental temperature is predicted according to the historical data; when the current flow rate is less than the first target flow rate, if the first target flow rate is less than or equal to the first historical flow rate, the current flow rate is amplified, so that the current flow rate reaches the first target flow rate; if the first target flow rate is greater than the first historical flow rate, a first reminder information is sent to remind the user to manually adjust the current flow rate of the breeding pond; when the current flow rate is greater than or equal to the first target flow rate, the current flow rate is kept unchanged.

[0129] In the embodiments of the present application, it should be understood that the disclosed apparatus and method can be implemented in other manners. The embodiments described above are merely exemplary, for example, the division of the units is only a logical function division, and there can be another division manner in actual implementation; for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0130] In addition, the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments of the present application.

[0131] In addition, the functional modules in each of the embodiments of the present application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0132] In this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations.

[0133] The above only describes the embodiments of the present application, and is not used to limit the protection scope of the present application. For those skilled in the art, various modifications and changes can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for regulating water flow in an aquaculture pond, characterized in that, The method comprises: S1: acquiring an environmental temperature of a culture pond and a temperature variation amount of the environmental temperature in a continuous time period; S2: when the environmental temperature exceeds a first preset temperature interval and the temperature variation amount is less than or equal to a second preset temperature value, acquiring a current water flow rate of the culture pond, determining a first historical water flow rate corresponding to a minimum activity value at which fish of a fish variety can adapt to survive under the environmental temperature according to the fish variety, and predicting a first target water flow rate corresponding to a standard dissolved oxygen amount of the culture pond after a target time length under the environmental temperature according to historical data; S3: when the current water flow rate is less than the first target water flow rate, if the first target water flow rate is less than or equal to the first historical water flow rate, increasing the current water flow rate to reach the first target water flow rate; if the first target water flow rate is greater than the first historical water flow rate, issuing a first reminding information to remind a user to manually adjust the current water flow rate of the culture pond; S4: when the current water flow rate is greater than or equal to the first target water flow rate, keeping the current water flow rate unchanged; After step S1, the method further comprises: S21: when the environmental temperature exceeds the first preset temperature interval and the temperature variation amount is less than or equal to the second preset temperature value, acquiring a first temperature of upper pond water and a second temperature of lower pond water of the culture pond; S22: when a first temperature difference between the first temperature and the second temperature is greater than or equal to a preset temperature difference, acquiring the current water flow rate of the culture pond; S23: calculating an average value of a sum of the first temperature and the second temperature to obtain a preset mixed pond water temperature, acquiring a second historical water flow rate corresponding to a minimum activity value at which the fish of the fish variety can adapt to survive under the preset mixed pond water temperature according to the fish variety, and predicting a second target water flow rate corresponding to a standard dissolved oxygen amount of the culture pond after a target time length under the preset mixed pond water temperature according to historical data; S24: when the second target water flow rate is different from the first target water flow rate, comparing the current water flow rate with the second target water flow rate, if the second target water flow rate is less than or equal to the second historical water flow rate, increasing the current water flow rate to reach the second target water flow rate; if the second target water flow rate is greater than the second historical water flow rate, issuing a first reminding information to remind a user to manually adjust the current water flow rate of the culture pond; when the current water flow rate is greater than or equal to the second target water flow rate, keeping the current water flow rate unchanged.

2. The method of claim 1, wherein, After step S1, the method further comprises: S25: when the environmental temperature exceeds the first preset temperature interval and the temperature variation amount is less than or equal to the second preset temperature value, dividing the culture pond into a plurality of sub-regions; S26: acquiring a third temperature of pond water in each sub-region, and determining an abnormal sub-region corresponding to an abnormal temperature according to the third temperature; S27: obtaining a current local water flow rate of the abnormal sub-region, and determining a third historical water flow rate corresponding to a minimum activity value at which the fish can survive in a non-abnormal temperature in the third temperature according to the fish species, and a third target water flow rate corresponding to a time length after which the dissolved oxygen content of the aquaculture pond meets the standard dissolved oxygen content after a target time length at an abnormal temperature in the third temperature according to historical data; S28: when the third target water flow rate is inconsistent with the first target water flow rate, comparing the current water flow rate with the third target water flow rate, if the third target water flow rate is less than or equal to the third historical water flow rate, increasing the current water flow rate to reach the third target water flow rate; if the third target water flow rate is greater than the third historical water flow rate, issuing a second reminder information to remind the user to manually adjust the current local water flow rate of the abnormal sub-region; when the current local water flow rate is greater than or equal to the third historical water flow rate, keeping the current local water flow rate unchanged.

3. A method of adjusting water flow in an aquaculture tank as claimed in claim 2, wherein, After step S28, the following steps are included: S281: obtaining a frequent abnormal sub-region in which the number of times of being determined as an abnormal sub-region exceeds a preset number of times within a preset time period; S282: obtaining an actual breeding density in the frequent abnormal sub-region, and determining whether the actual breeding density meets a standard breeding density; S283: when the actual breeding density does not meet the standard breeding density, issuing a third reminder information to remind the user to adjust the actual breeding density so as to meet the standard breeding density.

4. The method of claim 3, wherein the water flow is adjusted by the method of claim 1 or 2. After step S283, the following steps are included: S284: when the actual breeding density meets the standard breeding density, obtaining a sediment accumulation amount of the frequent abnormal sub-region, and determining whether the sediment accumulation amount exceeds a preset allowable accumulation amount; S285: when the sediment accumulation amount is greater than or equal to the preset allowable accumulation amount, issuing a fourth reminder information to remind the user to clean the sediment.

5. A method of flow regulation in an aquaculture pond according to claim 4, wherein, After step S285, the following steps are included: S286: when the sediment accumulation amount is less than the preset allowable accumulation amount, obtaining a first regional terrain of the frequent abnormal sub-region; S287: issuing a fifth reminder information according to the first regional terrain to remind the user to adjust the first regional terrain to reduce the protruding part in the first regional terrain.

6. The method of claim 2, wherein the water flow is adjusted by the method of claim 1. After step S28, the following steps are included: S291: obtaining a long-term abnormal sub-region in which the existence time length exceeds a preset time length within a preset time period; S292: obtaining an actual breeding density in the long-term abnormal sub-region, and determining whether the actual breeding density meets a standard breeding density; S293: when the actual breeding density does not meet the standard breeding density, issuing a third reminder information to remind the user to adjust the actual breeding density so as to meet the standard breeding density.

7. A water flow regulating device for an aquaculture pond, characterized in that, The device is used to implement the aquaculture pond water flow adjusting method according to any one of claims 1-6, and the device comprises: a first obtaining module: configured to obtain an environmental temperature of the aquaculture pond and a temperature variation amount of the environmental temperature within a continuous time period; The second acquisition module is configured to acquire a current water flow rate of the aquaculture pond, determine a first historical water flow rate corresponding to a minimum activity value at which the fish can survive under the ambient temperature according to the fish species, and predict a first target water flow rate corresponding to a standard dissolved oxygen amount of the aquaculture pond after a target time length under the ambient temperature according to historical data when the dissolved oxygen amount meets the standard dissolved oxygen amount. The first adjustment module is configured to, when the current water flow rate is less than the first target water flow rate, if the first target water flow rate is less than or equal to the first historical water flow rate, increase the current water flow rate to the first target water flow rate, and if the first target water flow rate is greater than the first historical water flow rate, send a first reminder information to remind a user to manually adjust the current water flow rate of the aquaculture pond. The second adjustment module is configured to, when the current water flow rate is greater than or equal to the first target water flow rate, keep the current water flow rate unchanged.

8. An electronic device, comprising: The computer program is executed by the processor to run the steps in the method of any one of claims 1-6.

9. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to run the steps in the method of any one of claims 1-6.

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