CN106843301A - A kind of fishery cultivating oxygen-increasing control system - Google Patents

Abstract

A kind of aeration control system for fish farming, the system includes a meteorological monitoring module for detecting light, wind speed, air temperature and rainwater meteorological parameters, and also includes a dissolved oxygen/temperature sensor and a pH sensor for detecting water quality, the control system It also includes a single-chip microcomputer, which acquires meteorological parameters and water quality parameters, performs processing and analysis, and controls the start and stop of the aquaculture oxygenation equipment according to the analysis results. The aquaculture aeration equipment is powered by 380v AC, the control system is powered by solar energy, the dissolved oxygen/temperature sensor and PH sensor are connected to the single-chip microcomputer through the sensor mediation circuit, the single-chip microcomputer is connected to the GPRS wireless communication module, and connected to the server of the control system, mobile phone or computer The server is accessible via the network.

Description

A kind of aeration control system for fish farming

technical field

The invention belongs to the technical field of fish farming, and in particular relates to a control system for increasing oxygen in fish farming.

Background technique

At the end of 2014, the total area of freshwater aquaculture in China reached 6.08×10 ⁶ hectares, accounting for more than 72% of the total aquaculture area in the country, of which more than 43% of the freshwater aquaculture was pond aquaculture. High-density, high-efficiency fish farming is an important way to achieve high-yield farming of freshwater resources.

In order to improve the breeding income, high-density farming will inevitably lead to an increase in the "oxygen debt" of the water body. In order to adjust the oxygen content of the water body, oxygen enhancement and various hydrodynamic equipment have also emerged as the times require. At present, the pond mechanical aeration equipment mainly includes impeller type, waterwheel type, jet type, propeller type and blast aeration type aerators, as well as surge machines of different powers, water quality improvement machines and other aquaculture equipment. . For different aquaculture aeration equipment, the hope of fishermen is energy saving and reliability. Yet the shortcoming of existing aeration equipment control system is:

1. Most of them rely solely on human experience to control the opening of the equipment, and there is no corresponding intelligent control system.

2. The reliability of the control system is not high, relying only on a single variable, such as dissolved oxygen, to control aquaculture equipment.

3. The control algorithm of the control system is simple, relying on human experience to time the working mode of the equipment, it cannot automatically judge the weather and other external conditions to adjust the working mode and output power of the equipment, and the system is not self-adaptive.

Contents of the invention

Therefore, in order to solve the above problems, improve the reliability and universal practicability of the aquaculture aeration system, and meet the needs of the development of large-area pond aquaculture, the present invention provides an aeration control system for fishery aquaculture.

A fish farming aeration control system, the system includes a weather monitoring module for detecting light, wind speed, air temperature and rain meteorological parameters,

Also includes dissolved oxygen/temperature sensor and PH sensor for detecting water quality,

The control system also includes a single-chip microcomputer, which acquires meteorological parameters and water quality parameters, performs processing and analysis, and controls the start and stop of the aquaculture oxygenation equipment according to the analysis results.

The aquaculture aeration equipment is powered by 380v AC, the control system is powered by solar energy, the dissolved oxygen/temperature sensor and PH sensor are connected to the single-chip microcomputer through the sensor mediation circuit, the single-chip microcomputer is connected to the GPRS wireless communication module, and connected to the server of the control system, mobile phone or computer The server is accessible via the network.

The control system also includes a floating body that can float on the water surface, and a connecting rod is fixed on the floating body. sensor,

The number of solar panels is at least one, the meteorological monitoring module is set above the waterproof integrated control box, and the dissolved oxygen/temperature sensor and PH sensor are connected to the waterproof integrated control box through cables passing through the center of the buoy.

The waterproof integrated control box is equipped with a DC power supply and a control board assembly box. The single-chip microcomputer chip and GPRS wireless communication module are loaded on the control board. The weather monitoring module is connected to the control board through the connection hole of the waterproof integrated control box.

The connecting rod is provided with a circular pull ring for fixing the position of the floating body.

A method for controlling oxygenation in fish farming, comprising the following steps:

S101, obtaining the dissolved oxygen, pH value and temperature value of the aquaculture water and the meteorological monitoring data including the meteorological parameters of light, wind speed, temperature and rain through the water quality sensor and the meteorological monitoring module;

S102, after data analysis, determine three types of weather, whether it is sunny, cloudy and rainy,

On sunny days, the oxygen supply is sufficient, and the low-speed output of the aquaculture aeration equipment provides sufficient hydropower for the aquaculture water to ensure a balanced oxygen content in the upper and lower water bodies;

In cloudy and rainy days, the oxygen content of the water body is relatively low, so it is necessary to operate the aeration equipment at high speed, and at the same time, it is necessary to monitor in real time whether the dissolved oxygen, temperature and PH value of the water body parameters are within the set optimal value range,

If the judgment is no, it will continue to judge whether it is within the alarm value range. If the dissolved oxygen, temperature and PH value are all within the alarm value range, the buzzer alarm system needs to be turned on;

S103, store and analyze the real-time monitored water quality data, predict in advance and obtain the predicted value of the water quality data of the aquaculture aeration equipment after T min, and compare the predicted value with the optimal set value at the same time to realize the aeration of the aquaculture The speed of the equipment is adjusted and controlled.

The frequency conversion speed regulation is adopted for the speed adjustment of the aquaculture aeration equipment, and the control strategy adopts the PID algorithm.

The invention takes the high-voltage aquaculture aeration equipment as the control object and realizes the multi-objective closed-loop dual control of the pond aquaculture aeration by means of a multi-objective intelligent predictive control method.

Description of drawings

Fig. 1 is a structural diagram of the control system of the present invention.

Fig. 2 is a layout diagram of the control box of the present invention.

FIG. 3 is a partially enlarged schematic diagram of FIG. 2 .

Fig. 4 is a bottom view of the interior of the waterproof control box in the embodiment of the present invention.

Fig. 5 is a flow chart of multi-objective coordinated predictive control aeration equipment in an embodiment of the present invention.

Among them, 1—solar panel, 2—meteorological monitoring module, 3—waterproof integrated control box, 4—pull ring, 5—floating body, 6—sensor, 7—power supply, 8—assembly box , 9——connecting rod, 10——connecting hole.

detailed description

As shown in Figure 1, the control system of the present invention comprises illumination, wind speed, air temperature and rainwater with meteorological conditions, and water quality data comprises dissolved oxygen, temperature and PH value as control input variable, and input single-chip microcomputer STM32F427 is processed and analyzed, and then controls 3 Single-phase relays are used to control high-voltage aquaculture aeration equipment. These include:

1. The control system consists of two parts: the terminal and the control terminal. The terminal components include dissolved oxygen/temperature sensors, pH sensors, and aquaculture aeration equipment. The components of the control end include a single-chip microcomputer core board, a GPRS wireless communication module, and a mobile phone or computer access device.

2. The working process of the terminal is: through the dissolved oxygen/temperature sensor, the data of the PH sensor and the meteorological parameters obtained by the meteorological module and other multi-objective control variables are input to the host of the single-chip microcomputer STM32F427, and the single-chip microcomputer controls the terminal after data processing of various parameters Automatic switching on and off of equipment and alarm states triggered by certain conditions.

3. Its working process is: the sensor value obtained by the single-chip microcomputer from the sensor is processed and analyzed, and the meteorological parameters obtained by the meteorological module are stored in the SIM card of the GPRS wireless communication module. Oxygen equipment works normally and reliably.

The GPRS wireless communication module is a SIM900A module, which uses the GPRS module and uploads data to the server, which is displayed and operated by the computer software of the monitoring equipment, or consults the data and configuration parameters using the mobile app software.

4. The aquaculture aeration equipment is powered by 380v AC and adopts three-phase four-wire connection mode, which belongs to high-power electrical appliances and is dangerous to operate. The device can control the 3 phases of the motor through 3 relays, control the start and stop of the motor by controlling the phase wires, and simultaneously cut off the power and start at the same time to ensure its safety and reliability.

The control board in the above control system is placed in the control box 3 in Fig. 2, and the control box 3 is assembled on the control floating body 5 to ensure that the circuit is not corroded and the reliability of the control system works. The tightness and corrosion resistance of the control box 3 in Fig. 2 should be guaranteed to be relatively high. At the same time, the power supply of the control board is powered by three solar panels 1, and a 24V power supply battery and a 24v spare battery.

The water quality detection sensor 6 passes through the control box 3, and is immersed in water to detect dissolved oxygen, temperature and pH value.

In Fig. 2, the weather detection module 2 is placed on the control box 3, and the bottom opening of the weather detection module 2 is connected to the upper opening of the control box 3 for data transmission. Assemble the control box 3, place the floating body 5 on the water surface of the pond, and fix it through the pull ring 4 that fixes the position of the floating body in Figure 3, and each of the three linkage mechanisms 9 has a fixing hole.

The floating body 5 is annular, and it is formed by connecting three parts of hollow pipes. Before installation, the same quality of filling can be injected into the three hollow pipes to change the buoyancy of the floating body, and use connecting parts for interval connection. Compared with the design of adopting an integrated floating body, it is easier to control the sinking or floating volume of the floating body, thereby changing the height of the control box 3 from the water surface.

The connecting wires of the solar cell panel are arranged in the connecting rod 9, and the connecting rod mechanism is made of hollow stainless steel. The connection line passes through the hollow connecting rod and connects with the solar panel to prevent the line from being corroded and ensure the normal operation of the power supply line.

The pull ring is designed as a circle. Compared with other triangle or quadrilateral pull rings, the advantage is that during long-term use, the rope will not be worn due to the floating body being placed in the pond for a long time, and the control device will float up and down. durability. In addition, while using a circular pull ring to fix the device on the shore, it also has the flexibility of relatively floating.

The advantage of the control box being assembled on the floating body is that the control box is easy to move and can conduct all-round water quality testing. At the same time, the water quality sensor is convenient to connect and can be freely changed according to the test depth.

Fig. 4 is the internal structure diagram of the control box 3, which has a 24V battery power supply 7, a control board assembly box 8, and a connection hole 10 for the control board of the meteorological module.

Fig. 5 is a flow chart of the entire intelligent predictive control method. First, through the analysis and processing of the data monitored by the water quality sensor and the weather monitoring module, it is judged whether the three types of weather are sunny, cloudy and rainy. In sunny days, the oxygen supply is sufficient, just adjust the frequency converter, output a lower speed to provide sufficient water power for pond farming, and ensure the balance of oxygen content in the upper and lower water bodies.

On cloudy and rainy days, the oxygen content of the pond water is relatively low, and a high-speed operation of oxygenation equipment is required. At the same time, it is necessary to monitor the water parameter values in real time: whether the dissolved oxygen, temperature and PH value are within the set optimal value range, determine When it is "No", it will continue to determine whether it is within the alarm value range. If the dissolved oxygen, temperature, and PH are all within the alarm value range, it is necessary to turn on the buzzer alarm system and notify fishermen to take corresponding measures in time. Prevent accidents in the oxygenation equipment and bring harm to the breeding.

At the same time, the real-time monitoring of water quality data needs to be stored and predicted. Through the analysis of a large amount of data, a prediction model is established to predict the predicted value of the water quality data after T min of the aeration equipment in advance. At the same time, the predicted data and the optimal set value For comparison, the oxygenation equipment can be controlled in advance T min to ensure the reliability and real-time performance of intelligent control. T is preferably less than or equal to 60.

In the present invention, the dual functions of real-time monitoring control and predictive control ensure the reliability and stability of the control system. At the same time, the speed of the aeration equipment is classified and output through water quality data combined with meteorological conditions, which saves electric energy and reduces the cost of breeding.

Claims (6)

1. a kind of fishery cultivating oxygen-increasing control system, it is characterised in that the system include for detection light photograph, wind speed, temperature and The weather monitoring module of rainwater meteorologic parameter,

Also include the dissolved oxygen/temperature sensor and PH sensors for detecting water quality,

Described control system also includes single-chip microcomputer, and single-chip microcomputer obtains meteorologic parameter and water quality parameter, carries out Treatment Analysis, according to The start and stop of analysis result control cultivation oxygen increasing equipment.

2. fishery cultivating oxygen-increasing control system as claimed in claim 1, it is characterised in that cultivation oxygen increasing equipment is 380v exchanges Power supply, the control system uses solar powered, and dissolved oxygen/temperature sensor and PH sensors are reconciled circuit and connected by sensor Single-chip microcomputer, single-chip microcomputer connection GPRS wireless communication modules are connect, and is connected with the server of control system, mobile phone or computer pass through net Network accessible services device.

3. fishery cultivating oxygen-increasing control system as claimed in claim 1, it is characterised in that the control system also includes The floating body that can be bubbled through the water column, the floating body is annular, and connecting rod is equiped with floating body, and the connecting rod is used to carry solar panel, prevents Dissolved oxygen/the temperature sensor and PH sensors of the integrated control cabinet of water, weather monitoring module and monitoring water quality,

The quantity of solar panel is at least one piece, and weather monitoring module is arranged on the top of the integrated control cabinet of waterproof, and dissolved oxygen/ Temperature sensor and PH sensors access the integrated control cabinet of waterproof by the cable through floating body center,

The integrated control cabinet of waterproof is built with dc source and Control card assembling box, singlechip chip, GPRS wireless communication modules It is loaded on Control card, weather monitoring module is connected by the connecting hole of the integrated control cabinet of waterproof with Control card.

4. fishery cultivating oxygen-increasing control system as claimed in claim 3, it is characterised in that connecting rod is provided with for fixing floating body The circular draw ring of position.

5. a kind of fishery cultivating oxygenation control method, it is characterised in that comprise the following steps：

S101, by water quality sensor and meteorological monitoring modular obtain breeding water dissolved oxygen, pH value and temperature value and including The weather data of illumination, wind speed, temperature and rainwater meteorologic parameter；

Whether S102, be respectively fine day by judging three kinds of weather patterns after data analysis, the cloudy and rainy day,

In the case of fine day, oxygen supply is sufficient, the cultivation oxygen increasing equipment output slow-speed of revolution sufficient hydrodynamic force for breeding water is provided, it is ensured that on Lower oxygen content of water is balanced；

Cloudy day and rainy day, then oxygen content of water was relatively fewer, it is necessary to the cultivation oxygen increasing equipment that runs at high speed, while needing real-time monitoring In water body parameter value dissolved oxygen, temperature and pH value whether setting optimum value in the range of,

When being judged to no, will continue to determine whether in the range of alarming value, if dissolved oxygen, temperature and pH value are all in alarming value scope It is interior, then need to open buzzer warning system；

S103, the water quality data to real-time monitoring carries out data storage and analysis, and look-ahead obtains cultivation oxygen increasing equipment in T The predicted value of the water quality data after min, while predicted value and optimum setting value are compared, realizes turning cultivation oxygen increasing equipment Speed is adjusted control.

6. fishery cultivating oxygenation control method as claimed in claim 5, it is characterised in that to cultivation oxygen increasing equipment rotational speed regulation Using frequency control, control strategy uses pid algorithm.