An intelligent control method and controller for an oxygenator based on oxygen-dissolved grading control

Abstract

The application discloses an intelligent control method and controller of an aerator based on dissolved oxygen grading control. The method comprises the following steps: S1, starting self-checking; S2, starting the aerator according to the dissolved oxygen value grading, starting 1-2 aerators at 6 mg / L, starting half of the aerators at 5 mg / L, and starting all the aerators at 4 mg / L; S3, when power failure of an aerator is monitored, the failed aerator is automatically removed, and the grading scheme of the remaining aerators is recalculated, and the nearest available aerator is preferentially started to make up the dissolved oxygen gap; and S4, the aerator is closed in the reverse order. The controller reserves an encrypted communication module interface, can realize networking communication through a plug-and-play intelligent control module, and is integrated with wide-voltage power management, lightning and surge protection and a fully-sealed waterproof structure. The application realizes grading intelligent control and power failure automatic recombination of the aerator, has the characteristics of power saving, life protection, easy expansion and high reliability, and is suitable for oxygenation management of aquaculture.

Description

Technical Field

[0001] This invention relates to the field of aquaculture oxygenation control technology, specifically to an intelligent control method for aerators based on dissolved oxygen level control and a controller for implementing the method. Background Technology

[0002] Aerators are core equipment for maintaining dissolved oxygen in aquaculture. In large-scale aquaculture ponds, multiple aerators are typically installed, and farmers manually start and stop them based on experience. This method has the following drawbacks: First, it lacks precise control, requiring all aerators to be on or off in case of malfunction, resulting in wasted electricity or insufficient dissolved oxygen. Second, it lacks real-time monitoring of aerator power failures; when an aerator experiences a phase loss or overload, it cannot automatically shut down for protection, easily burning out the motor. Third, starting multiple aerators simultaneously can cause significant stress on the power grid. In the existing technology, some aerator controllers can realize remote control switching, but they generally lack the ability to respond to dissolved oxygen values ​​in different levels, and they are unable to automatically reassemble the remaining aerators or link with other aeration systems and spraying systems to assist in aeration to maintain dissolved oxygen stability when the equipment fails. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an intelligent control method and controller for aerators that can control aerators in stages according to dissolved oxygen levels, automatically reassemble remaining aerators when there is a power failure, and enable independent remote control and maintenance reminders. To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A smart control method for aerators based on dissolved oxygen level control, applied to an aquaculture system including a dissolved oxygen probe, a power monitoring module, and at least two aerators, includes the following steps: S1. Start self-test; S2. Dissolved oxygen monitoring and graded control: When the dissolved oxygen value is ≤ the preset lower limit, the aerators are turned on in grades according to the degree of deviation of the dissolved oxygen value from the lower limit and the preset rules; when the dissolved oxygen value reaches the lower limit, all aerators are turned on; when the dissolved oxygen value is higher than the lower limit, some aerators are turned on proportionally. S3. Power monitoring and fault handling: When a power failure is detected in an aerator, the aerator is automatically stopped, removed from the tier control list, and the tier scheme of the remaining aerators is recalculated. S4. Dissolved oxygen recovery and shutdown: When the dissolved oxygen value is greater than or equal to the preset upper limit, the oxygenator will be shut down in stages in the reverse order of startup. Furthermore, the specific rules for tiered control are as follows: when the dissolved oxygen level is 6 mg / L, one or two additional aerators are activated; when the dissolved oxygen level is 5 mg / L, half of the aerators are activated; and when the dissolved oxygen level is 4 mg / L, all aerators are activated. When an aerator is disabled due to a power failure, the system automatically increases the operating level of the remaining aerators, prioritizing the activation of the nearest available aerator to compensate for the dissolved oxygen shortage. The power monitoring module monitors power parameters including at least one of three-phase phase loss, overload, and abnormal voltage. Furthermore, with the addition of an intelligent control module, this method also includes tiered alarm and emergency linkage: when the dissolved oxygen level is ≤6mg / L, a level one warning is issued; when the dissolved oxygen level is ≤5mg / L, S2 is executed for level two treatment; when the dissolved oxygen level is ≤4mg / L, the aerators are automatically turned on at full capacity; simultaneously, when the dissolved oxygen level is ≤5mg / L, a start signal is sent to the liquid oxygen device through the intelligent control module, causing the liquid oxygen system to enter the assisted oxygenation state; when multiple aerators need to be started simultaneously, they are started sequentially according to the preset branch delay, with a preset interval between each branch to avoid grid impact; each aerator can be independently started and stopped via an App or wireless remote control, and this operation is not limited by the automatic logic from S2 to S4; the cumulative running time of each aerator is recorded, and when the preset maintenance cycle is reached, a maintenance reminder is sent to the mobile terminal App via the communication module. This invention also provides a controller for implementing the above method, including multiple signal input terminals, multiple drive output terminals, an operation panel, and an encrypted communication module interface. The operation panel has a start button, a stop button, and a manual force button. The encrypted communication module interface is used for pluggable installation of an intelligent control module to achieve network communication with external devices. When the intelligent control module is inserted, the controller automatically enters intelligent mode; when the intelligent control module is removed, the controller automatically switches to independent operation mode. The controller also integrates a wide-voltage power management circuit, a lightning surge protection circuit, and a fully sealed waterproof structure. Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Intelligent control in different levels: The number of aerators turned on is precisely adjusted according to the dissolved oxygen level, which can both maintain dissolved oxygen and save electricity. 2. Automatic power failure reset: When an aerator experiences a power failure such as phase loss or overload, the faulty machine is automatically removed and the operating speed of the remaining aerators is reallocated to ensure that dissolved oxygen does not drop suddenly. 3. Tiered alarm and emergency response: Three-level early warning system with automatic response, the last level fully activates the aerators and activates the liquid oxygen system to prevent sudden death. 4. Delayed start-up for each circuit: Multiple aerators are started with a delayed start-up to avoid impacting the power grid when they start simultaneously. 5. Independent remote control: Each aerator can be controlled independently by the App or remote control, without being limited by automatic logic, making it convenient for harvesting fish and shrimp. 6. Maintenance reminders: Record the cumulative running time of each aerator and send maintenance reminders when they are due to extend the equipment life. 7. Intelligent expansion: Reserves an interface for encrypted communication modules, allowing for plug-and-play functionality, easy unplugging and automatic shutdown, and flexible upgrades. 8. Strong environmental adaptability: Integrated wide voltage power management, lightning surge protection and fully sealed waterproof structure to ensure long-term stable operation in the harsh environment of the pond. Attached Figure Description

[0004] Figure 1 This is a flowchart of the control method of the present invention. Figure 2 This is a schematic diagram of the hardware interface architecture of the controller of the present invention. Detailed Implementation

[0005] The preferred embodiments of the present invention will now be clearly and completely described with reference to the accompanying drawings. Example 1: Control Method Flow like Figure 1 As shown in the figure, this embodiment provides an intelligent control method for an aerator based on dissolved oxygen level control. The specific process is as follows: S1. Receive the start command, perform system self-test, and confirm that the dissolved oxygen probe, power monitoring module and each aerator are in normal condition. S2. Receive dissolved oxygen data in real time. When the dissolved oxygen value is ≤4mg / L, turn on the oxygenator according to the dissolved oxygen value: 1-2 additional oxygenators are turned on at 6mg / L, half are turned on at 5mg / L, and all are turned on at 4mg / L. S3. Receives data from the power monitoring module in real time. When a phase loss, overload, or voltage abnormality is detected in an aerator, the aerator is automatically stopped, removed from the grading control list, and the grading scheme for the remaining aerators is recalculated. The available aerator closest to the faulty aerator is started first, and the operating level of the remaining aerators is automatically increased to make up for the dissolved oxygen shortage. S4. When the dissolved oxygen level is ≥7mg / L, turn off the aerator in the reverse order of when it was turned on. In addition, the system also performs functions such as tiered alarms, branch-delay start-up, independent remote control, and maintenance reminders, as detailed in the invention content section. Example 2: Controller Hardware Interface like Figure 2 As shown, this embodiment provides a controller for implementing the above method, including a control chip, a signal input interface, a drive output interface, an operation panel, an encrypted communication module interface, a wide voltage power management circuit, a lightning surge protection circuit, and a fully sealed waterproof structure. The signal input interface includes the dissolved oxygen probe signal input terminal and the power monitoring module signal input terminal. The drive output interface includes multiple aerator drive output terminals. The control panel has a start button, a stop button, and a manual force button. The encrypted communication module interface is used for pluggable installation of intelligent control modules. When an intelligent control module is detected being inserted, the controller automatically enters intelligent mode; when an intelligent control module is detected being removed, the controller automatically switches to independent operation mode. The controller is fully sealed and waterproofed by potting waterproof glue inside, and the control chip and core circuit are all covered and sealed with waterproof glue. It should be noted that the above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any equivalent method modifications or controller hardware architecture modifications made based on the concept of the present invention are included within the scope of protection of the present invention.

Claims

1. A smart control method for aerators based on dissolved oxygen level control, applied to an aquaculture system including a dissolved oxygen probe, a power monitoring module, and at least two aerators, characterized in that, Includes the following steps: S1. Start self-test: After receiving the start command, the system sends a test signal to the dissolved oxygen probe, power monitoring module and each aerator. After confirming that the status of each component is normal, it enters S2. S2. Dissolved oxygen monitoring and graded control: Real-time reception of dissolved oxygen data. When the dissolved oxygen value is ≤ preset lower limit, the aerators are turned on in grades according to the degree of deviation of the dissolved oxygen value from the lower limit and preset rules. When the dissolved oxygen value reaches the lower limit, all aerators are turned on. When the dissolved oxygen value is higher than the lower limit, some aerators are turned on proportionally. S3. Power monitoring and fault handling: Receives data from the power monitoring module in real time. When a power fault is detected in an aerator, it automatically stops the aerator, removes it from the tier control list, and recalculates the tier scheme for the remaining aerators. S4. Dissolved oxygen recovery and shutdown: When the dissolved oxygen value is greater than or equal to the preset upper limit, the oxygenator will be shut down in stages in the reverse order of startup.

2. The method according to claim 1, characterized in that, In S2, the preset rule is: when the dissolved oxygen value is 6 mg / L, one or two additional aerators are turned on; when the dissolved oxygen value is 5 mg / L, half of the aerators are turned on; when the dissolved oxygen value is 4 mg / L, all aerators are turned on.

3. The method according to claim 1, characterized in that, In S3, when an aerator is removed due to a power failure, the system automatically increases the operating level of the remaining aerators to make up for the dissolved oxygen shortage caused by the shutdown of the aerator; when filling the gap, the available aerator closest to the faulty aerator is started first.

4. The method according to claim 1, characterized in that, In S3, the power parameters monitored by the power monitoring module include at least one of three-phase power loss, overload, and voltage abnormality.

5. The method according to claim 1, characterized in that, With the addition of an intelligent control module, it also includes tiered alarms and emergency linkage: when the dissolved oxygen value is ≤6mg / L, a level one warning is issued; when the dissolved oxygen value is ≤5mg / L, S2 is executed for level two treatment, and at the same time, a start signal is sent to the liquid oxygen device through the intelligent control module; when the dissolved oxygen value is ≤4mg / L, the oxygenator is automatically turned on at full capacity; when the dissolved oxygen value is ≤3mg / L, the liquid oxygen supply device supplies oxygen at full capacity and issues a level three emergency alarm.

6. The method according to claim 1, characterized in that, Also includes: When multiple aerators need to be started simultaneously, each aerator is started sequentially according to the preset branch delay, with a preset interval between each branch to avoid power grid impact.

7. The method according to claim 1, characterized in that, It also includes an independent remote control function: each aerator can be started and stopped independently via an app or wireless remote control, and this operation is not limited by the automatic logic of S2 to S4.

8. The method according to claim 1, characterized in that, Also includes: The system records the cumulative runtime of each aerator and sends a maintenance reminder to the mobile app via the communication module when the preset maintenance cycle is reached.

9. A controller for implementing the method according to any one of claims 1 to 8, characterized in that, include: Multiple signal input terminals are used to receive signals from the dissolved oxygen probe and the power monitoring module, respectively. Multiple drive output terminals are used to drive each aerator; The control panel includes a start button, a stop button, and a manual force button. An encrypted communication module interface is used for pluggable installation of intelligent control modules to enable network communication with external devices; When the intelligent control module is inserted, the controller automatically enters intelligent mode; when the intelligent control module is removed, the controller automatically switches to independent operation mode, and the local graded control and power monitoring functions are unaffected.

10. The controller according to claim 9, characterized in that, It also includes a wide-voltage power management circuit, a lightning surge protection circuit, and a fully sealed waterproof structure integrated inside the controller; the wide-voltage power management circuit supports wide-voltage DC input and has overvoltage, overcurrent, and reverse connection protection functions; the lightning surge protection circuit is connected to the power input port; the fully sealed waterproof structure is achieved by potting waterproof adhesive, and the control chip and core circuit are all covered and sealed by the waterproof adhesive.

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