Precise control method and system for dissolved oxygen of circulating water culture system

Abstract

The invention provides a circulating water culture system dissolved oxygen accurate control method and system, the system comprises a culture pond, a multi-channel oxygen flow accurate regulator arranged in the culture pond, a water quality environment collector arranged in the culture pond, and an oxygen flow accurate regulator arranged in the multi-channel oxygen flow accurate regulator. And the multi-channel oxygen flow precise regulator is controlled to work through data collected by the water quality environment collector. According to the invention, multi-channel aeration and oxygenation can be realized, the culture benefit is improved, and the culture risk is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of aquaculture systems, and in particular to a method and system for accurately controlling dissolved oxygen in a circulating water aquaculture system. Background Art

[0002] Dissolved oxygen is an important water quality indicator of fishery water, and the dissolved oxygen status has an important impact on water quality and the growth of aquaculture organisms. With the rapid development of pond aquaculture, pond dissolved oxygen has received more and more attention as a water environment factor that must be controlled in aquaculture waters. Patent application No. 2016101787884, entitled "Dissolved oxygen control device and control method in freshwater aquaculture water body", discloses a microprocessor, a memory, a first aerator arranged in the pond, a plurality of detection devices and a second aerator arranged on the pond; the pond is provided with a track, and an electric trolley is provided on the track, and the electric trolley is connected to the second aerator; a first solenoid valve is provided on the water inlet pipe of the pond, and a second solenoid valve is provided on the water outlet pipe of the pond; each detection device includes a dissolved oxygen sensor and a water temperature sensor extending into the water; the microprocessor is electrically connected to the memory, the first aerator, each dissolved oxygen sensor, each water temperature sensor, the second aerator, the electric trolley, the first solenoid valve and the second solenoid valve respectively. This invention cannot achieve aeration and oxygenation in multiple channels. Summary of the invention

[0003] The present invention aims to at least solve the technical problems existing in the prior art, and in particular innovatively proposes a method and system for accurately controlling dissolved oxygen in a circulating water aquaculture system.

[0004] In order to achieve the above-mentioned purpose of the present invention, the present invention provides a dissolved oxygen precision control system for a Xunhua aquaculture system, including a breeding pond, in which a water quality environment collector is arranged, and also includes a multi-channel oxygen flow precision regulator arranged in the breeding pond, and the multi-channel oxygen flow precision regulator is controlled by data collected by the water quality environment collector.

[0005] In a preferred embodiment of the present invention, the water quality environment collector includes one or any combination of a dissolved oxygen sensor, a temperature sensor, a pH sensor, and an EC sensor;

[0006] The collection end of the dissolved oxygen sensor is connected to the collection end of the dissolved oxygen sensor of the multi-channel control unit;

[0007] The temperature sensor collection end is connected to the temperature sensor collection end of the multi-channel control unit;

[0008] The collection end of the pH value sensor is connected to the collection end of the pH value sensor of the multi-channel control unit;

[0009] The acquisition end of the EC sensor is connected to the EC sensor acquisition end of the multi-channel control unit.

[0010] In a preferred embodiment of the present invention, it also includes a water surface visual collector for monitoring the breeding pond.

[0011] In a preferred embodiment of the present invention, it also includes a bait throwing machine for throwing bait into the breeding pond.

[0012] In a preferred embodiment of the present invention, it also includes early warning and alerting based on information fed back by a water quality environment collector and a water surface visual collector.

[0013] In a preferred embodiment of the present invention, the multi-channel oxygen flow precision regulator includes a gas flow mass regulating valve, a multi-channel control unit, M gas flow valves, M one-way valves, M aeration discs, and M pressure gauges; wherein M is a positive integer greater than or equal to 2;

[0014] The M gas flow valves are respectively a first gas flow valve, a second gas flow valve, a third gas flow valve, ..., an Mth gas flow valve;

[0015] The M one-way valves are respectively a first one-way valve, a second one-way valve, a third one-way valve, ..., an Mth one-way valve;

[0016] The M aeration plates are respectively the first aeration plate, the second aeration plate, the third aeration plate, ..., the Mth aeration plate;

[0017] The M pressure gauges are respectively a first pressure gauge, a second pressure gauge, a third pressure gauge, ..., an Mth pressure gauge;

[0018] The air inlet of the gas flow mass regulating valve is connected to the first gas source, the air outlet of the gas flow mass regulating valve is connected to the air inlet of the mth gas flow valve, the air outlet of the mth gas flow valve is connected to the air inlet of the mth check valve, and the air outlet of the mth check valve is connected to the mth aeration disk; an mth pressure gauge is provided on the pipeline between the air outlet of the mth gas flow valve and the air inlet of the mth check valve; m is a positive integer less than or equal to M;

[0019] The gas flow mass regulating valve control end of the multi-channel control unit is connected to the control end of the gas flow mass regulating valve, the mth gas flow valve control end of the multi-channel control unit is connected to the control end of the mth gas flow valve, the mth pressure gauge collection end of the multi-channel control unit is connected to the collection end of the mth pressure gauge; the communication end of the multi-channel control unit is connected to the communication module.

[0020] The present invention also discloses a method for accurately controlling dissolved oxygen in a Xunhua aquaculture system, comprising the following steps:

[0021] S1, the multi-channel control unit obtains the temperature and dissolved oxygen data collected by the water quality environment collector;

[0022] S2, according to the temperature obtained in step S1, look up the table to obtain the preset dissolved oxygen data at this temperature; wherein, the obtained temperature needs to perform the following operations first:

[0023]

[0024] S3, determine the relationship between the dissolved oxygen obtained from the table and the collected dissolved oxygen:

[0025] If DO t,T <DO T ,DO t,T Indicates the collected dissolved oxygen, DO T represents the dissolved oxygen obtained by looking up the table, then the opening of all gas flow valves increases by k1, k1 is the preset first opening threshold; k1>0;

[0026] If DO T ≤DO t,T ,DO t,T Indicates the collected dissolved oxygen, DO T represents the dissolved oxygen obtained by looking up the table, then the opening of all gas flow valves is reduced by k2, k2 is the preset second opening threshold; k2>0, k1>k2.

[0027] In a preferred embodiment of the present invention, step S3 includes the following steps:

[0028] S31, the server sends temperature table lookup data to the multi-channel control unit; the temperature table lookup data is the corresponding relationship between temperature and preset dissolved oxygen;

[0029] S32, after receiving the temperature table lookup data sent by the server, the multi-channel control unit determines the relationship between the dissolved oxygen obtained by the table lookup and the collected dissolved oxygen:

[0030] If DO t,T <DO T , then execute step S33;

[0031] If DO T ≤DO t,T , then execute step S34;

[0032] S33, the multi-channel control unit sends a control command to increase the opening by k1 to the first gas flow valve, the second gas flow valve, the third gas flow valve, ..., the Mth gas flow valve, respectively. When the openings of the first gas flow valve, the second gas flow valve, the third gas flow valve, ..., the Mth gas flow valve are Q1+k1, Q2+k1, Q3+k1, ..., Q M +k1, Q mIndicates the opening size of the mth gas flow valve before receiving the opening increase command, which indicates that the openings of all gas flow valves have increased by k1; execute step S32 or / and S35;

[0033] S34, the multi-channel control unit sends a control command to reduce the opening k2 to the first gas flow valve, the second gas flow valve, the third gas flow valve, ..., the Mth gas flow valve, respectively. When the openings of the first gas flow valve, the second gas flow valve, the third gas flow valve, ..., the Mth gas flow valve are Q1+k2, Q2+k2, Q3+k2, ..., Q M +k2, Q m Indicates the opening size of the mth gas flow valve before receiving the opening reduction command, which indicates that the openings of all gas flow valves are reduced by k2; execute step S32 or / and S35;

[0034] S35, when the gas flow mass control valve fails, the multi-channel control unit sends a control signal to the normally open solenoid valve, and the control signal is to change the channel of the normally open solenoid valve from being unable to flow gas to being able to flow gas smoothly. After the normally open solenoid valve receives the control signal sent by the multi-channel control unit, the channel of the normally open solenoid valve is changed from being unable to flow gas to being able to flow gas smoothly, and is now in a normally open state;

[0035] Or when there is a power outage, the normally open solenoid valve is in a power-off state, and the normally open solenoid valve automatically changes from being unable to flow gas to being able to flow gas smoothly;

[0036] When the fault of the gas flow mass control valve is resolved or a call is received, the multi-channel control unit sends a control signal to the normally open solenoid valve. The control signal converts the channel of the normally open solenoid valve from one through which gas can flow smoothly to one through which gas cannot flow. After the normally open solenoid valve receives the control signal sent by the multi-channel control unit, the channel of the normally open solenoid valve is converted from one through which gas can flow smoothly to one through which gas cannot flow, and is now in a closed state.

[0037] The present invention also discloses a computer system, comprising:

[0038] processor;

[0039] a memory for storing processor-executable instructions;

[0040] Wherein, the processor is configured to implement the method for precise control of dissolved oxygen in the circulating water aquaculture system when executing the executable instructions.

[0041] The present invention discloses a computer-readable storage medium, comprising:

[0042] a memory having a computer program stored thereon;

[0043] The processor is used to execute the program in the memory to implement the method for accurately controlling dissolved oxygen in the circulating water aquaculture system.

[0044] In summary, due to the adoption of the above technical solution, the present invention can achieve multi-channel aeration and oxygenation, improve aquaculture efficiency, and reduce aquaculture risks.

[0045] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0047] Figure 1 It is a schematic block diagram of the connection of the present invention.

[0048] Figure 2 It is a schematic block diagram of the connection of the multi-channel oxygen flow precision regulator of the present invention.

[0049] Figure 3 It is a schematic block diagram of the connection of the multi-channel oxygen flow precision regulator of the present invention. DETAILED DESCRIPTION

[0050] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0051] The present invention discloses a precise dissolved oxygen control system for aquaculture system in Xunhua water, such as Figure 1 As shown, it includes a breeding pond, in which a water quality environment collector is arranged, and also includes a multi-channel oxygen flow precision regulator arranged in the breeding pond. The multi-channel oxygen flow precision regulator is controlled to work through the data collected by the water quality environment collector.

[0052] In a preferred embodiment of the present invention, the water quality environment collector includes a dissolved oxygen sensor, a temperature sensor, a pH sensor, an EC sensor, etc., which are used to monitor important parameters in the water body in real time and provide auxiliary information for dissolved oxygen regulation. The dissolved oxygen sensor adopts a high-precision, long-life fluorescent dissolved oxygen sensor for real-time monitoring of the dissolved oxygen content in the water body. Among them, various sensors should be installed in the non-feeding area of ​​the fish pond, about 0.5 meters below the water surface, to ensure the accuracy of the measurement.

[0053] The collection end of the dissolved oxygen sensor is connected to the collection end of the dissolved oxygen sensor of the multi-channel control unit;

[0054] The temperature sensor collection end is connected to the temperature sensor collection end of the multi-channel control unit;

[0055] The collection end of the pH value sensor is connected to the collection end of the pH value sensor of the multi-channel control unit;

[0056] The acquisition end of the EC sensor is connected to the EC sensor acquisition end of the multi-channel control unit.

[0057] In a preferred embodiment of the present invention, a water surface visual collector for monitoring the aquaculture pond is also included. The water surface visual collector is composed of hardware such as a high-definition camera, lighting equipment, and a data transmission module. It also includes monitoring center equipment (including a server, a display, and an alarm device), combined with advanced image processing algorithms such as machine learning or deep learning, to achieve real-time monitoring of abnormal conditions such as fish hypoxia and floating head. The system captures images of the water surface through a high-definition camera, uses lighting equipment to ensure image clarity, and transmits image data to the monitoring center by wireless or wired means; at the monitoring center, the server processes and analyzes the image data in real time to extract fish characteristics and behavior information.

[0058] In a preferred embodiment of the present invention, it also includes a bait throwing machine for throwing bait into the breeding pond.

[0059] In a preferred embodiment of the present invention, it also includes early warning and warning based on the information fed back by the water quality environment collector and the water surface visual collector. By setting up sound and light alarm and remote alarm circuit, when the dissolved oxygen content is lower than the lower limit, an alarm signal is automatically issued to remind the staff to pay attention and take corresponding measures.

[0060] Optional wireless connection modules and mobile phone and computer operating software can be used to achieve remote monitoring and data management, thus improving the convenience and intelligence of the system.

[0061] In a preferred embodiment of the present invention, the multi-channel oxygen flow precision regulator includes a gas flow mass regulating valve, a multi-channel control unit, M gas flow valves, M one-way valves, M aeration discs, and M pressure gauges; wherein M is a positive integer greater than or equal to 2;

[0062] The M gas flow valves are respectively a first gas flow valve, a second gas flow valve, a third gas flow valve, ..., an Mth gas flow valve; these gas flow valves are gas flow valves with adjustable openings;

[0063] The M one-way valves are respectively a first one-way valve, a second one-way valve, a third one-way valve, ..., an Mth one-way valve;

[0064] The M aeration plates are respectively the first aeration plate, the second aeration plate, the third aeration plate, ..., the Mth aeration plate;

[0065] The M pressure gauges are respectively a first pressure gauge, a second pressure gauge, a third pressure gauge, ..., an Mth pressure gauge;

[0066] The air inlet of the gas flow mass regulating valve is connected to the first gas source, the air outlet of the gas flow mass regulating valve is connected to the air inlet of the mth gas flow valve, the air outlet of the mth gas flow valve is connected to the air inlet of the mth check valve, and the air outlet of the mth check valve is connected to the mth aeration disk; an mth pressure gauge is provided on the pipeline between the air outlet of the mth gas flow valve and the air inlet of the mth check valve; m is a positive integer less than or equal to M;

[0067] The gas flow mass regulating valve control end of the multi-channel control unit is connected to the control end of the gas flow mass regulating valve, the mth gas flow valve control end of the multi-channel control unit is connected to the control end of the mth gas flow valve, the mth pressure gauge collection end of the multi-channel control unit is connected to the collection end of the mth pressure gauge; the communication end of the multi-channel control unit is connected to the communication module.

[0068] Also includes a normally open solenoid valve and an M+1 check valve;

[0069] The air inlet of the normally open solenoid valve is connected to the second air source, the air outlet of the normally open solenoid valve is connected to the air inlet of the M+1th one-way valve, and the air outlet of the M+1th one-way valve is connected to the air outlet of the mth one-way valve;

[0070] The normally open solenoid valve control end of the multi-channel control unit is connected to the control end of the normally open solenoid valve. The first gas source and the second gas source are the same gas source (liquid air can be used). At this time, the air inlet end of the gas flow mass control valve is connected to the gas source, and the air inlet end of the normally open solenoid valve is connected to the gas source, and the other connections are the same; when the gas flow mass control valve fails, the normally open solenoid valve changes from a closed channel state to a smooth channel state. At this time, the gas source passes through the normally open solenoid valve channel, and then enters the first aeration plate, the second aeration plate, the third aeration plate, the fourth aeration plate, and the Mth aeration plate through the M+1th one-way valve.

[0071] The multi-channel control unit is based on a single-chip microcomputer. It realizes precise control of dissolved oxygen through a local server, combined with sensor signals, preset upper and lower limits of dissolved oxygen, and the working status of the oxygen flow precision control device. It can automatically control the opening position of the gas flow valve, adjust the aeration volume of the aeration disk, and accurately keep the dissolved oxygen content in the water within an appropriate range.

[0072] like Figure 2 As shown, the gas inlet end of the gas flow mass regulating valve is connected to the first gas source, and the gas outlet end of the gas flow mass regulating valve is respectively connected to the gas inlet end of the first gas flow valve, the gas inlet end of the second gas flow valve, the gas inlet end of the third gas flow valve, ..., the gas inlet end of the Mth gas flow valve;

[0073] The outlet end of the first gas flow valve is connected to the inlet end of the first one-way valve, the outlet end of the second gas flow valve is connected to the inlet end of the second one-way valve, the outlet end of the third gas flow valve is connected to the inlet end of the third one-way valve, ..., the outlet end of the Mth gas flow valve is connected to the inlet end of the Mth one-way valve;

[0074] The outlet end of the first check valve is connected to the first aeration plate, the outlet end of the second check valve is connected to the second aeration plate, the outlet end of the third check valve is connected to the third aeration plate, ..., the outlet end of the Mth check valve is connected to the Mth aeration plate;

[0075] A first pressure gauge is provided on the pipeline between the outlet end of the first gas flow valve and the inlet end of the first non-return valve; a second pressure gauge is provided on the pipeline between the outlet end of the second gas flow valve and the inlet end of the second non-return valve; a third pressure gauge is provided on the pipeline between the outlet end of the third gas flow valve and the inlet end of the third non-return valve; ...; an M pressure gauge is provided on the pipeline between the outlet end of the M gas flow valve and the inlet end of the M non-return valve;

[0076] The air inlet of the normally open solenoid valve is connected to the second air source, and the air outlet of the normally open solenoid valve is connected to the air inlet of the sixth one-way valve; the air outlet of the sixth one-way valve is respectively connected to the air outlet of the first one-way valve, the air outlet of the second one-way valve, the air outlet of the third one-way valve, ..., the air outlet of the Mth one-way valve;

[0077] The gas flow mass regulating valve control end of the multi-channel control unit is connected to the control end of the gas flow mass regulating valve, the first gas flow valve control end of the multi-channel control unit is connected to the control end of the first gas flow valve, the second gas flow valve control end of the multi-channel control unit is connected to the control end of the second gas flow valve, the third gas flow valve control end of the multi-channel control unit is connected to the control end of the third gas flow valve, ..., the Mth gas flow valve control end of the multi-channel control unit is connected to the control end of the Mth gas flow valve;

[0078] The first pressure gauge collecting end of the multi-channel control unit is connected to the collecting end of the first pressure gauge, the second pressure gauge collecting end of the multi-channel control unit is connected to the collecting end of the second pressure gauge, the third pressure gauge collecting end of the multi-channel control unit is connected to the collecting end of the third pressure gauge, ..., the Mth pressure gauge collecting end of the multi-channel control unit is connected to the collecting end of the Mth pressure gauge; the normally open solenoid valve control end of the multi-channel control unit is connected to the control end of the normally open solenoid valve.

[0079] When M = 5, Figure 3As shown, the gas inlet end of the gas flow mass regulating valve is connected to the first gas source, and the gas outlet end of the gas flow mass regulating valve is respectively connected to the gas inlet end of the first gas flow valve, the gas inlet end of the second gas flow valve, the gas inlet end of the third gas flow valve, the gas inlet end of the fourth gas flow valve, and the gas inlet end of the fifth gas flow valve;

[0080] The outlet end of the first gas flow valve is connected to the inlet end of the first check valve, the outlet end of the second gas flow valve is connected to the inlet end of the second check valve, the outlet end of the third gas flow valve is connected to the inlet end of the third check valve, the outlet end of the fourth gas flow valve is connected to the inlet end of the fourth check valve, and the outlet end of the fifth gas flow valve is connected to the inlet end of the fifth check valve;

[0081] The outlet end of the first check valve is connected to the first aeration plate, the outlet end of the second check valve is connected to the second aeration plate, the outlet end of the third check valve is connected to the third aeration plate, the outlet end of the fourth check valve is connected to the fourth aeration plate, and the outlet end of the fifth check valve is connected to the fifth aeration plate;

[0082] A first pressure gauge is provided on the pipeline between the outlet end of the first gas flow valve and the inlet end of the first non-return valve; a second pressure gauge is provided on the pipeline between the outlet end of the second gas flow valve and the inlet end of the second non-return valve; a third pressure gauge is provided on the pipeline between the outlet end of the third gas flow valve and the inlet end of the third non-return valve; a fourth pressure gauge is provided on the pipeline between the outlet end of the fourth gas flow valve and the inlet end of the fourth non-return valve; a fifth pressure gauge is provided on the pipeline between the outlet end of the fifth gas flow valve and the inlet end of the fifth non-return valve;

[0083] The air inlet of the normally open solenoid valve is connected to the second air source, and the air outlet of the normally open solenoid valve is connected to the air inlet of the sixth one-way valve; the air outlet of the sixth one-way valve is respectively connected to the air outlet of the first one-way valve, the air outlet of the second one-way valve, the air outlet of the third one-way valve, the air outlet of the fourth one-way valve, and the air outlet of the fifth one-way valve;

[0084] The gas flow mass regulating valve control end of the multi-channel control unit is connected to the control end of the gas flow mass regulating valve, the first gas flow valve control end of the multi-channel control unit is connected to the control end of the first gas flow valve, the second gas flow valve control end of the multi-channel control unit is connected to the control end of the second gas flow valve, the third gas flow valve control end of the multi-channel control unit is connected to the control end of the third gas flow valve, the fourth gas flow valve control end of the multi-channel control unit is connected to the control end of the fourth gas flow valve, and the fifth gas flow valve control end of the multi-channel control unit is connected to the control end of the fifth gas flow valve;

[0085] The first pressure gauge collection end of the multi-channel control unit is connected to the collection end of the first pressure gauge, the second pressure gauge collection end of the multi-channel control unit is connected to the collection end of the second pressure gauge, the third pressure gauge collection end of the multi-channel control unit is connected to the collection end of the third pressure gauge, the fourth pressure gauge collection end of the multi-channel control unit is connected to the collection end of the fourth pressure gauge, and the fifth pressure gauge collection end of the multi-channel control unit is connected to the collection end of the fifth pressure gauge; the normally open solenoid valve control end of the multi-channel control unit is connected to the control end of the normally open solenoid valve.

[0086] When a power outage or a gas flow mass control valve fails, the normally open solenoid valve changes from a closed channel state to a free channel state. At this time, the second gas source stored in the liquefied tank passes through the pressure reducing valve on the liquefied tank and then through the normally open solenoid valve channel, and then enters the 1st aeration plate, the 2nd aeration plate, the 3rd aeration plate, the 4th aeration plate, and the 5th aeration plate through the 6th one-way valve.

[0087] The present invention discloses a method for accurately controlling dissolved oxygen in a Xunhua aquaculture system, comprising the following steps:

[0088] S1, the multi-channel control unit obtains the temperature and dissolved oxygen data collected by the water quality environment collector;

[0089] S2, according to the temperature obtained in step S1, look up the table to obtain the preset dissolved oxygen data at this temperature; as shown in Table 1. Among them, the obtained temperature needs to perform the following operations first:

[0090]

[0091] Wherein, T represents the acquired temperature;

[0092] That is, when T is an integer, T remains unchanged; when T is not an integer, 1 needs to be added to [T], [T] means taking the integer of T and discarding the decimal part; maintain the consistency of the data;

[0093] Table 1 Temperature and preset dissolved oxygen

[0094] Temperature ℃ Dissolved oxygen mg / L Temperature ℃ Dissolved oxygen mg / L Temperature ℃ Dissolved oxygen mg / L Temperature ℃ Dissolved oxygen mg / L 0 <![CDATA[14.64-D0]]> 9 <![CDATA[11.53-D9]]> 18 <![CDATA[9.46-D 18 ]]> 27 <![CDATA[7.96-D 27 ]]> 1 <![CDATA[14.22-D1]]> 10 <![CDATA[11.26-D 10 ]]> 19 <![CDATA[9.27-D 19 ]]> 28 <![CDATA[7.82-D 28 ]]> 2 <![CDATA[13.82-D2]]> 11 <![CDATA[11.01-D 11 ]]> 20 <![CDATA[9.08-D 20 ]]> 29 <![CDATA[7.69-D 29 ]]> 3 <![CDATA[13.44-D3]]> 12 <![CDATA[10.77-D 12 ]]> 21 <![CDATA[8.90-D 21 ]]> 30 <![CDATA[7.56-D 30 ]]> 4 <![CDATA[13.09-D4]]> 13 <![CDATA[10.53-D 13 ]]> 22 <![CDATA[8.85-D 22 ]]> 31 <![CDATA[7.43-D 31 ]]> 5 <![CDATA[12.74-D5]]> 14 <![CDATA[10.30-D 14 ]]> 23 <![CDATA[8.57-D 23 ]]> 32 <![CDATA[7.30-D 32 ]]> 6 <![CDATA[12.42-D6]]> 15 <![CDATA[10.08-D 15 ]]> 24 <![CDATA[8.41-D 24 ]]> 33 <![CDATA[7.18-D 33 ]]> 7 <![CDATA[12.11-D7]]> 16 <![CDATA[9.86-D 16 ]]> 25 <![CDATA[8.25-D 25 ]]> 34 <![CDATA[7.07-D 34 ]]> 8 <![CDATA[11.81-D8]]> 17 <![CDATA[9.66-D 17 ]]> 26 <![CDATA[8.11-D 26 ]]> 35 <![CDATA[6.95-D 35 ]]>

[0095] Among them, D T Indicates the preset temperature difference threshold when the temperature is T℃, T=0, 1, 2, 3, ..., 35; D T is a positive number; D i ≤D j , i=0, 1, 2, 3,..., 34; j=1, 2, 3,..., 35; i≠j; D i Indicates the preset temperature difference threshold when the temperature is i℃, D jIndicates the preset temperature difference threshold when the temperature is j℃; the above table shows the preset dissolved oxygen values ​​corresponding to the temperature value of 0~35℃, where D T It is 0.17mg / L~2.36mg / L.

[0096] S3, determine the relationship between the dissolved oxygen obtained from the table and the collected dissolved oxygen:

[0097] If DO t,T <DO T ,DO t,T Indicates the collected dissolved oxygen, DO T represents the dissolved oxygen obtained by looking up the table, then the opening of all gas flow valves increases by k1, k1 is the preset first opening threshold; k1>0;

[0098] If DO T ≤DO t,T ,DO t,T Indicates the collected dissolved oxygen, DO T represents the dissolved oxygen obtained by looking up the table, then the opening of all gas flow valves is reduced by k2, k2 is the preset second opening threshold; k2>0, k1>k2;

[0099] The server also includes step S4, where the server collects the dissolved oxygen DO t,T The dissolved oxygen DO t,T The temperature dissolved oxygen curve corresponding to the collected temperature T°C is shown in Figure A, where the horizontal axis represents temperature and the vertical axis represents dissolved oxygen; Table 2 shows the standard dissolved oxygen corresponding to the temperature T′°C.

[0100] Table 2 Temperature and standard dissolved oxygen

[0101]

[0102]

[0103] D T″ Indicates the preset temperature difference standard threshold when the temperature is T'℃, T'=0, 1, 2, 3, ..., 35; D T″ is a positive number; D i″ ≤D j″ , i′=0, 1, 2, 3,..., 34; j′=1, 2, 3,..., 35; i′≠j′; D i′ ′ represents the preset temperature difference standard threshold when the temperature is i′℃, D j″ Indicates the preset temperature difference standard threshold when the temperature is j′℃; the above table shows the preset dissolved oxygen standard values ​​corresponding to the temperature value of 0~35℃, where D T″ It is 0.15mg / L~2.14mg / L.

[0104] The standard dissolved oxygen temperature standard curve corresponding to the temperature of T′°C is displayed in the same picture A, so that the data can be viewed intuitively and compared.

[0105] The temperature and standard dissolved oxygen are obtained as follows:

[0106] When the temperature is T″℃, in K identical culture ponds (the dissolved oxygen is D T″,1 ″、D T″,2 ″、D T″,3 ″、……、D T″,K ″) to culture the same aquatic fish; after harvesting the farmed fish, the dissolved oxygen corresponding to the top k breeding ponds in terms of harvest volume (weight) is averaged to obtain the optimal dissolved oxygen for fish farming at T″℃:

[0107] (D T″,1 ″′+D T″,2 ″′+D T″,3 ″′+……+D T″,k ″′) / k, k is less than K, K is 17, k is 5;

[0108] D T″,1 ″′ indicates the dissolved oxygen corresponding to the first place in harvest volume;

[0109] D T″,2 ″′ indicates the dissolved oxygen corresponding to the second place in harvest volume;

[0110] D T″,3 ″′ indicates the dissolved oxygen corresponding to the third place in harvest volume;

[0111] D T″,k ″′ represents the dissolved oxygen corresponding to the kth place in harvest volume;

[0112] In a preferred embodiment of the present invention, step S3 includes the following steps:

[0113] S31, the server sends temperature table lookup data to the multi-channel control unit; the temperature table lookup data is the corresponding relationship between temperature and preset dissolved oxygen;

[0114] S32, after receiving the temperature table lookup data sent by the server, the multi-channel control unit determines the relationship between the dissolved oxygen obtained by the table lookup and the collected dissolved oxygen:

[0115] If DO t,T <DO T , then execute step S33;

[0116] If DO T ≤DO t,T , then execute step S34;

[0117] S33, the multi-channel control unit sends a control command to increase the opening by k1 to the first gas flow valve, the second gas flow valve, the third gas flow valve, ..., the Mth gas flow valve, respectively. When the openings of the first gas flow valve, the second gas flow valve, the third gas flow valve, ..., the Mth gas flow valve are Q1+k1, Q2+k1, Q3+k1, ..., Q M +k1, Q m Indicates the opening size of the mth gas flow valve before receiving the opening increase command, which indicates that the openings of all gas flow valves have increased by k1; execute step S32 or / and S35;

[0118] S34, the multi-channel control unit sends a control command to reduce the opening k2 to the first gas flow valve, the second gas flow valve, the third gas flow valve, ..., the Mth gas flow valve, respectively. When the openings of the first gas flow valve, the second gas flow valve, the third gas flow valve, ..., the Mth gas flow valve are Q1+k2, Q2+k2, Q3+k2, ..., Q M +k2, Q m Indicates the opening size of the mth gas flow valve before receiving the opening reduction command, which indicates that the openings of all gas flow valves are reduced by k2; execute step S32 or / and S35;

[0119] S35, when the gas flow mass control valve fails, the multi-channel control unit sends a control signal to the normally open solenoid valve, and the control signal is to change the channel of the normally open solenoid valve from being unable to flow gas to being able to flow gas smoothly. After the normally open solenoid valve receives the control signal sent by the multi-channel control unit, the channel of the normally open solenoid valve is changed from being unable to flow gas to being able to flow gas smoothly, and is now in a normally open state;

[0120] Or when there is a power outage, the normally open solenoid valve is in a power-off state, and the normally open solenoid valve automatically changes from being unable to flow gas to being able to flow gas smoothly;

[0121] When the fault of the gas flow mass control valve is resolved or a call is received, the multi-channel control unit sends a control signal to the normally open solenoid valve. The control signal converts the channel of the normally open solenoid valve from one through which gas can flow smoothly to one through which gas cannot flow. After the normally open solenoid valve receives the control signal sent by the multi-channel control unit, the channel of the normally open solenoid valve is converted from one through which gas can flow smoothly to one through which gas cannot flow, and is now in a closed state.

[0122] The present invention also discloses a computer system, comprising:

[0123] processor;

[0124] a memory for storing processor-executable instructions;

[0125] Wherein, the processor is configured to implement the method for precise control of dissolved oxygen in the circulating water aquaculture system when executing the executable instructions.

[0126] The present invention discloses a computer-readable storage medium, comprising:

[0127] a memory having a computer program stored thereon;

[0128] The processor is used to execute the program in the memory to implement the method for accurately controlling dissolved oxygen in the circulating water aquaculture system.

[0129] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A precise dissolved oxygen control system for a Xunhua aquaculture system, comprising a culture pond, in which a water quality environment collector is arranged, characterized in that: It also includes a multi-channel oxygen flow precision regulator arranged in the breeding pond, and the operation of the multi-channel oxygen flow precision regulator is controlled by data collected by the water quality environment collector.

2. The precise dissolved oxygen control system of the circulating water aquaculture system according to claim 1 is characterized in that: The water quality environment collector includes one or any combination of a dissolved oxygen sensor, a temperature sensor, a pH sensor, and an EC sensor; The collection end of the dissolved oxygen sensor is connected to the collection end of the dissolved oxygen sensor of the multi-channel control unit; The temperature sensor collection end is connected to the temperature sensor collection end of the multi-channel control unit; The collection end of the pH value sensor is connected to the collection end of the pH value sensor of the multi-channel control unit; The acquisition end of the EC sensor is connected to the EC sensor acquisition end of the multi-channel control unit.

3. The precise dissolved oxygen control system of the circulating water aquaculture system according to claim 1 is characterized in that: Also included is a water surface visual collector for monitoring aquaculture ponds.

4. The precise dissolved oxygen control system of the circulating water aquaculture system according to claim 1 is characterized in that: Also included is a bait throwing machine for throwing bait into the breeding pond.

5. The precise dissolved oxygen control system of the circulating water aquaculture system according to claim 1 is characterized in that: It also includes early warning alerts based on information fed back from water quality environment collectors and water surface visual collectors.

6. The precise dissolved oxygen control system of the circulating water aquaculture system according to claim 1 is characterized in that: The multi-channel oxygen flow precision regulator includes a gas flow mass regulating valve, a multi-channel control unit, M gas flow valves, M one-way valves, M aeration discs, and M pressure gauges; wherein M is a positive integer greater than or equal to 2; The M gas flow valves are respectively a first gas flow valve, a second gas flow valve, a third gas flow valve, ..., an Mth gas flow valve; The M one-way valves are respectively a first one-way valve, a second one-way valve, a third one-way valve, ..., an Mth one-way valve; The M aeration plates are respectively the first aeration plate, the second aeration plate, the third aeration plate, ..., the Mth aeration plate; The M pressure gauges are respectively a first pressure gauge, a second pressure gauge, a third pressure gauge, ..., an Mth pressure gauge; The air inlet of the gas flow mass regulating valve is connected to the first gas source, the air outlet of the gas flow mass regulating valve is connected to the air inlet of the mth gas flow valve, the air outlet of the mth gas flow valve is connected to the air inlet of the mth check valve, and the air outlet of the mth check valve is connected to the mth aeration disk; an mth pressure gauge is provided on the pipeline between the air outlet of the mth gas flow valve and the air inlet of the mth check valve; m is a positive integer less than or equal to M; The gas flow mass regulating valve control end of the multi-channel control unit is connected to the control end of the gas flow mass regulating valve, the mth gas flow valve control end of the multi-channel control unit is connected to the control end of the mth gas flow valve, the mth pressure gauge collection end of the multi-channel control unit is connected to the collection end of the mth pressure gauge; the communication end of the multi-channel control unit is connected to the communication module.

7. A method for accurately controlling dissolved oxygen in a circulating water aquaculture system, characterized in that: The following steps are involved: S1, the multi-channel control unit obtains the temperature and dissolved oxygen data collected by the water quality environment collector; S2, according to the temperature obtained in step S1, look up the table to obtain the preset dissolved oxygen data at this temperature; wherein, the obtained temperature needs to perform the following operations first: S3, determine the relationship between the dissolved oxygen obtained from the table and the collected dissolved oxygen: If DO t,T <DO T ,DO t,T Indicates the collected dissolved oxygen, DO T represents the dissolved oxygen obtained by looking up the table, then the opening of all gas flow valves increases by k1, k1 is the preset first opening threshold; k1>0; If DO T ≤DO t,T , DO t,T Indicates the collected dissolved oxygen, DO T represents the dissolved oxygen obtained by looking up the table, then the opening of all gas flow valves is reduced by k2, k2 is the preset second opening threshold; k2>0, k1>k2.

8. The method for accurately controlling dissolved oxygen in aquaculture system according to claim 7, characterized in that: Step S3 includes the following steps: S31, the server sends temperature table lookup data to the multi-channel control unit; the temperature table lookup data is the corresponding relationship between temperature and preset dissolved oxygen; S32, after receiving the temperature table lookup data sent by the server, the multi-channel control unit determines the relationship between the dissolved oxygen obtained by the table lookup and the collected dissolved oxygen: If DO t,T <DO T , then execute step S33; If DO T ≤DO t,T , then execute step S34; S33, the multi-channel control unit sends a control command to increase the opening by k1 to the first gas flow valve, the second gas flow valve, the third gas flow valve, ..., the Mth gas flow valve, respectively. When the openings of the first gas flow valve, the second gas flow valve, the third gas flow valve, ..., the Mth gas flow valve are Q1+k1, Q2+k1, Q3+k1, ..., Q M +k1, Q m Indicates the opening size of the mth gas flow valve before receiving the opening increase command, which indicates that the openings of all gas flow valves have increased by k1; execute step S32 or / and S35; S34, the multi-channel control unit sends a control command to reduce the opening k2 to the first gas flow valve, the second gas flow valve, the third gas flow valve, ..., the Mth gas flow valve, respectively. When the openings of the first gas flow valve, the second gas flow valve, the third gas flow valve, ..., the Mth gas flow valve are Q1+k2, Q2+k2, Q3+k2, ..., Q M +k2, Q m Indicates the opening size of the mth gas flow valve before receiving the opening reduction command, which indicates that the openings of all gas flow valves are reduced by k2; execute step S32 or / and S35; S35, when the gas flow mass control valve fails, the multi-channel control unit sends a control signal to the normally open solenoid valve, and the control signal is to change the channel of the normally open solenoid valve from being unable to flow gas to being able to flow gas smoothly. After the normally open solenoid valve receives the control signal sent by the multi-channel control unit, the channel of the normally open solenoid valve is changed from being unable to flow gas to being able to flow gas smoothly, and is now in a normally open state; Or when there is a power outage, the normally open solenoid valve is in a power-off state, and the normally open solenoid valve automatically changes from being unable to flow gas to being able to flow gas smoothly; When the fault of the gas flow mass control valve is resolved or a call is received, the multi-channel control unit sends a control signal to the normally open solenoid valve. The control signal converts the channel of the normally open solenoid valve from one through which gas can flow smoothly to one through which gas cannot flow. After the normally open solenoid valve receives the control signal sent by the multi-channel control unit, the channel of the normally open solenoid valve is converted from one through which gas can flow smoothly to one through which gas cannot flow, and is now in a closed state.

9. A computer system, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to implement the method for precise control of dissolved oxygen in a circulating water aquaculture system according to any one of claims 7 to 8 when executing the executable instructions.

10. A computer-readable storage medium, characterized in that: include: a memory having a computer program stored thereon; A processor is used to execute the program in the memory to implement the method for accurately controlling dissolved oxygen in a circulating water aquaculture system according to any one of claims 7 to 8.

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