A smart control method and device for automatically extracting seawater

Abstract

This invention provides an intelligent control method and device for automatically extracting seawater, belonging to the field of automated control technology for mariculture. The method acquires current time, geographical location, and tidal time data; uses a water level sensor to detect whether the current water level has reached a preset threshold; and uses a water quality sensor to detect the water's conductivity to determine if it is seawater. When the water level meets the standard, the water is confirmed to be seawater, and the current time is within the high tide period, the pumping equipment is automatically started. The device includes a water level sensor, a water quality sensor, a communication module, a positioning module, a control module, and a relay control interface. This invention, through a multi-condition verification mechanism, avoids misjudgment due to rainfall and water accumulation and malfunctions caused by tidal fluctuations, achieving fully automated intelligent control of seawater extraction operations. It solves the problems of high labor intensity, high risk of nighttime operations, and frequent malfunctions associated with traditional manual operations, thus improving the production efficiency and safety of mariculture.

Description

Technical Field

[0001] This invention relates to the field of automated control technology for marine aquaculture, specifically to an intelligent control method and device for automatically extracting seawater. Background Technology

[0002] Marine aquaculture is an important economic industry in coastal areas. Its production process requires the regular extraction of seawater from the sea to maintain the normal operation of the aquaculture cycle. The timing of seawater extraction is closely related to tidal changes; pumping operations can only be effectively carried out when the seawater level reaches a certain height during high tide.

[0003] Currently, the conventional method for extracting seawater in mariculture mainly relies on manual observation and operation. Aquaculture workers need to continuously monitor tidal changes and manually start the pumps to store water once the tide has reached its peak. However, this manual operation mode has many drawbacks.

[0004] First, the timing of tides is uncertain. Although tidal movements follow certain patterns, the exact time of each high tide can deviate due to multiple factors such as celestial gravity and geographical environment. Coastal areas in my country typically experience two high tides daily. When high tides occur at night, especially in the early morning, aquaculture workers are required to continuously monitor the tide conditions. This not only seriously impacts their health but also poses a significant safety risk due to working at sea at night.

[0005] Secondly, manual operation is prone to errors. If operators fail to start the pumping equipment in time due to fatigue, negligence, or other reasons, the aquaculture circulation system will not receive enough seawater replenishment, which may lead to large-scale mortality of aquatic products and cause significant economic losses to farmers.

[0006] While some existing technologies involve seawater monitoring, such as the seawater sampling method disclosed in patent document CN114062624A, this solution only addresses seawater sampling and does not involve automatic control of the pumping equipment, making it unsuitable for direct application in aquaculture production. Furthermore, this solution triggers sampling solely based on water level determination, neglecting interference from environmental factors such as rainfall. When rainwater accumulates and causes water levels to rise, the system may misjudge the situation, thus failing to meet the reliability requirements of industrial aquaculture production. Summary of the Invention

[0007] The purpose of this invention is to provide an intelligent control method and device for automatically extracting seawater, which can automatically and accurately determine the timing of high tide and intelligently control the seawater extraction operation, effectively solving the problems of high labor intensity, high risk of misoperation and interference from environmental factors caused by manual operation.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A smart control method for automatically extracting seawater includes: S1: Obtain the current time and current geographical location, and obtain the corresponding tidal time data based on the current geographical location; S2: Detect the current water level using a water level sensor and determine whether the current water level has reached a preset water level threshold; S3: When the current water level reaches a preset water level threshold, the conductivity of the current water body is detected by a water quality sensor, and the current water body is determined to be seawater based on the conductivity. S4: When the current water body is seawater and the current time is within the high tide period indicated by the tidal time data, control the pumping equipment to start pumping operations.

[0010] Further: obtaining the current time includes: connecting to the network via a communication module and accessing a Network Time Protocol (NTP) server to obtain the current time.

[0011] Further: obtaining the corresponding tidal time data based on the current geographical location includes: obtaining the current geographical location through a positioning module; determining the corresponding maritime information service terminal based on the current geographical location; accessing the maritime information service terminal to obtain the tidal time data for the day.

[0012] Furthermore, it also includes: Receive the effective time range configured by the user; S4 further includes determining whether the current time is within the effective time range; When the current time is within the effective time range, the operation of controlling the pumping equipment to start pumping operations is executed.

[0013] Furthermore: following S4, it also includes: S5: Time the pumping operation, and when the time reaches the preset pumping time, control the pumping equipment to stop the pumping operation; S6: When the water level sensor detects that the current water level is lower than the low tide water level threshold, return to execute S2.

[0014] Furthermore, it also includes: receiving remote control commands through the communication module, and intervening in the pumping equipment according to the remote control commands.

[0015] The present invention also provides an intelligent control device for automatically extracting seawater, comprising: A water level sensor is used to detect the current water level. Water quality sensors are used to detect the electrical conductivity of a current water body; The communication module is used to connect to the network to obtain current time and tidal time data; The location module is used to obtain the current geographical location; The control module, connected to the water level sensor, the water quality sensor, the communication module and the positioning module, is used to determine whether the pumping conditions are met based on the current water level, the conductivity, the current time, the current geographical location and the tidal time data, and output a pumping control signal when the pumping conditions are met. A relay control interface, connected to the control module, is used to control the power supply of the pumping equipment according to the pumping control signal.

[0016] Furthermore: the communication module includes a Bluetooth communication module, a cellular communication module, and a wireless local area network communication module; the positioning module is a BeiDou positioning unit integrated in the cellular communication module.

[0017] Furthermore, it also includes a power conversion module for converting the input AC voltage into DC voltage to supply power to the control module, the communication module, and the positioning module.

[0018] Compared with the prior art, the present invention has the following advantages: I. This invention uses a water level sensor to detect whether the current water level has reached a preset threshold. Compared with the traditional method that relies on fixed-time triggering, it can accurately determine the pumping time based on the actual tidal conditions, avoiding the problem of invalid start-up or missed pumping time caused by tidal time fluctuations, and effectively reducing the power consumption caused by equipment idling.

[0019] Second, this invention uses a water quality sensor to detect the conductivity of the water body to determine whether the current water body is seawater, effectively eliminating the risk of misjudgment when rainwater accumulates during rainfall, ensuring that the pumping equipment only starts operating when real seawater is detected, and improving the accuracy of the system's judgment.

[0020] Third, this invention combines water level detection, water quality detection, and tidal time data for joint judgment. Pumping operations are only triggered when the current water level meets the standard, the water body is confirmed to be seawater, and the current time is within the high tide period. Through a multi-condition verification mechanism, the false trigger rate is minimized, significantly improving the reliability of system operation.

[0021] Fourth, this invention obtains the current geographical location through the positioning module and automatically matches the tidal time data of the corresponding area, realizing the automatic acquisition and updating of tidal information. There is no need for manual querying and input of tidal timetables, which reduces the complexity and error probability of manual operation.

[0022] Fifth, this invention realizes fully automated control of seawater extraction operations, eliminating the need for aquaculture personnel to monitor tidal changes at night or in the early morning. It solves the problems of high labor intensity and high safety risks of nighttime operations under the traditional manual operation mode, while avoiding the risk of economic losses caused by failure to pump water in time due to human negligence. Attached Figure Description

[0023] Figure 1 This is a flowchart illustrating an intelligent control method for automatically extracting seawater in one embodiment. Figure 2 This is a flowchart illustrating an intelligent control method for automatically extracting seawater in another embodiment. Figure 3 This is a schematic diagram of an intelligent control device for automatically extracting seawater, provided by the present invention. Detailed Implementation

[0024] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] This invention provides an intelligent control method for automatically extracting seawater, applicable to the automatic seawater extraction scenario in mariculture. In mariculture, the aquaculture circulation system needs to periodically extract seawater from the sea to maintain normal operation, and the timing of seawater extraction is closely related to tidal changes. This invention achieves intelligent automatic control of seawater extraction operations through a multi-condition judgment mechanism.

[0026] The intelligent control method provided in the embodiments of the present invention, such as Figure 1 As shown, it includes the following steps: S1: Obtain the current time and current geographical location, and retrieve the corresponding tidal time data based on the current geographical location. Specifically, this can be achieved by connecting to the internet via a communication module and accessing a Network Time Protocol (NTP) server to obtain the accurate current time. The NTP server is a public time synchronization service on the internet, providing high-precision standard time to ensure the accuracy of subsequent time determination. Simultaneously, the current geographical location is obtained via a positioning module, which can be a satellite positioning unit integrated into a cellular communication module, such as a BeiDou positioning unit. After obtaining the current geographical location, the corresponding maritime information service is determined based on this location. For example, when the device is deployed in the coastal area of ​​Fujian, it automatically determines to access the information service corresponding to the Fujian Maritime Safety Administration, and then retrieves the tidal time data for the day from that service, including information such as the high tide and low tide periods.

[0027] S2: The current water level is detected by a water level sensor to determine whether the current water level has reached a preset water level threshold. Specifically, the water level sensor can be a switch output type sensor, which outputs a high-level signal when the tide rises to the sensor's installation position, indicating that the current water level has reached the preset water level threshold. The preset water level threshold should be determined based on the actual geographical conditions of the aquaculture site and the operating requirements of the pumping equipment to ensure that pumping operations can be effectively carried out at that water level.

[0028] S3: When the current water level reaches a preset water level threshold, the conductivity of the current water body is detected by a water quality sensor, and the conductivity is used to determine whether the current water body is seawater. Specifically, seawater contains a large amount of dissolved salt, so its conductivity is significantly higher than that of freshwater and rainwater. By setting a conductivity threshold, when the detected conductivity is higher than the threshold, the current water body is determined to be seawater; when the conductivity is lower than the threshold, the current water body is determined to be rainwater or other freshwater, and pumping operations are not triggered. This judgment mechanism effectively solves the problem of misjudging water levels caused by rainfall but not actually high tide, ensuring that the pumping equipment only starts operating when there is a real high tide.

[0029] S4: When the current water body is seawater and the current time is within the high tide period indicated by the tidal time data, control the pumping equipment to start pumping operations. Through triple verification of water level detection, water quality detection, and tidal time, the possibility of false triggering is minimized, significantly improving the reliability of the system.

[0030] In some embodiments, users can also configure an effective time range for the device via a communication module. The effective time range is a time window set by the user to allow automatic water pumping operations based on actual aquaculture needs. When determining whether to initiate water pumping, in addition to the three conditions mentioned above, it is also necessary to determine whether the current time falls within the user-configured effective time range. Water pumping is only executed when all conditions are met simultaneously. This mechanism provides users with additional control measures, allowing them to flexibly adjust the effective time period of automatic water pumping based on factors such as the aquaculture cycle and electricity usage arrangements.

[0031] like Figure 2As shown, in some other embodiments, step S4 is followed by step S5: timing the pumping operation, and controlling the pumping equipment to stop pumping when the timing reaches a preset pumping time. The preset pumping time can be set by the user based on the reservoir capacity and the pumping equipment flow rate. After pumping stops, the device enters an idle waiting state. S6: When the water level sensor detects that the current water level is lower than the low tide threshold, it indicates that the tide has receded, and the device returns to the water level detection state, reverting to step S2, waiting for the next high tide, thus forming a complete automated control cycle.

[0032] like Figure 3 As shown, the communication modules in this embodiment of the invention include a Bluetooth communication module, a cellular communication module, and a wireless LAN communication module. The Bluetooth communication module can be used for short-range operation of the device, facilitating on-site debugging and parameter configuration. The cellular communication module is used for remote operation and data acquisition from a remote server, supporting remote communication in environments without local network coverage, such as near a seaside. The wireless LAN communication module provides an alternative remote communication method when the user does not wish to use a cellular network, for example, to reduce communication costs or due to poor cellular network signal. The configuration of these three communication modules gives the device flexible communication capabilities, adapting to different application scenarios.

[0033] In addition, the device supports receiving remote control commands via a communication module and intervening in the pumping equipment according to these commands. This function preserves the user's ability to intervene manually; in case of emergencies or special needs, users can remotely control the start and stop of the pumping equipment via a mobile application or other terminals, ensuring the system's flexibility and controllability.

[0034] The present invention also provides an intelligent control device for automatically extracting seawater, used to implement the above-mentioned intelligent control method. The device includes a water level sensor, a water quality sensor, a communication module, a positioning module, a control module, and a relay control interface.

[0035] The water level sensor is used to detect the current water level. It is installed at a preset water level detection location and outputs a corresponding detection signal when the tide rises to that position. The water quality sensor is used to detect the conductivity of the current water body and determines whether the water body is seawater based on the conductivity value. The communication module is used to connect to the network to obtain current time and tidal time data, and also supports receiving user configuration commands and remote control commands. The positioning module is used to obtain the current geographical location in order to determine the maritime information service to be accessed.

[0036] The control module is the core processing unit of the device, connected to the water level sensor, water quality sensor, communication module, and positioning module. The control module receives detection data from each sensor and time and tidal data acquired by the communication module, and determines whether pumping conditions are met based on preset logic. When pumping conditions are met, the control module outputs a pumping control signal. The relay control interface connects to the control module and controls the power supply to the pumping equipment based on the pumping control signal, thereby realizing the pumping function. The relay control interface can be configured with multiple outputs to meet the needs of controlling multiple pumping devices.

[0037] In this embodiment of the invention, the communication module includes a Bluetooth communication module, a cellular communication module, and a wireless local area network communication module, and the positioning module is a BeiDou positioning unit integrated into the cellular communication module. Integrating the positioning function into the cellular communication module can reduce the hardware cost and size of a separate positioning module and simplify the device structure.

[0038] The device also includes a power conversion module for converting the input AC voltage into DC voltage to power the control module, communication module, and positioning module. In this embodiment, the power conversion module receives a 220V AC voltage input and converts it into the low-voltage DC voltage required by the device through an internal AC-to-DC voltage conversion circuit. This design allows the device to be directly connected to the AC power supply in the field without the need for an additional DC power supply, reducing the complexity of field wiring and improving the ease of device deployment.

[0039] The principle block diagram of the device of the present invention will be described with reference to the accompanying drawings. The device inputs include a power input, a water level sensor input, and a water quality sensor input. The power input is 220V AC, which is converted by the power conversion module to power the internal circuitry. The water level sensor and the water quality sensor provide water level detection signals and conductivity detection signals to the control module, respectively. The device output is a relay control interface used to control the power supply to external pumping equipment. The communication module is a bidirectional input / output interface, capable of receiving external configuration and control commands, and also actively accessing external networks to obtain time and tidal data.

[0040] The sensor control algorithm flow of this invention embodiment is as follows: After the device is powered on, it first determines whether the current time is within the effective time range configured by the user. If it is not within the effective time range, it continues to wait. When it enters the effective time range, the device reads the detection signal of the water level sensor and determines whether the current water level has reached the preset water level threshold. If the water level has not reached the threshold, it continues to detect and wait. When the water level reaches the threshold, the device reads the conductivity data of the water quality sensor and determines whether the current water body is seawater. If the conductivity is lower than the seawater threshold, it is determined to be non-seawater, and it returns to continue detecting the water level. If the conductivity reaches the seawater threshold, it further determines whether the current time is within the high tide period obtained from the maritime information service. If it is not within the high tide period, it returns to continue detecting the water level. If it is within the high tide period, it controls the relay to close and starts the pumping equipment to perform pumping operations. Timing is performed during the pumping process. When the preset pumping time is reached, the relay is controlled to open and the pumping operation is stopped. Subsequently, the device detects whether the water level is lower than the low tide water level threshold. When low tide is detected, the device returns to the initial state and waits for the next high tide cycle.

[0041] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent transformations or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A smart control method for automatically extracting seawater, characterized in that, Includes the following steps: S1: Obtain the current time and current geographical location, and obtain the corresponding tidal time data based on the current geographical location; S2: Detect the current water level using a water level sensor and determine whether the current water level has reached a preset water level threshold; S3: When the current water level reaches a preset water level threshold, the conductivity of the current water body is detected by a water quality sensor, and the current water body is determined to be seawater based on the conductivity. S4: When the current water body is seawater and the current time is within the high tide period indicated by the tidal time data, control the pumping equipment to start pumping operations.

2. The intelligent control method according to claim 1, characterized in that, The process of obtaining the current time includes: connecting to the network via a communication module and accessing a Network Time Protocol (NTP) server to obtain the current time.

3. The intelligent control method according to claim 1, characterized in that, The step of obtaining the corresponding tidal time data based on the current geographical location includes: obtaining the current geographical location through a positioning module; determining the corresponding maritime information service terminal based on the current geographical location; accessing the maritime information service terminal to obtain the tidal time data for the day.

4. The intelligent control method according to claim 1, characterized in that, Also includes: Receive the effective time range configured by the user; S4 further includes determining whether the current time is within the effective time range; When the current time is within the effective time range, the operation of controlling the pumping equipment to start pumping operations is executed.

5. The intelligent control method according to claim 1, characterized in that, Following S4, it also includes: S5: Time the pumping operation, and when the time reaches the preset pumping time, control the pumping equipment to stop the pumping operation; S6: When the water level sensor detects that the current water level is lower than the low tide water level threshold, return to execute S2.

6. The intelligent control method according to claim 2, characterized in that, Also includes: The communication module receives remote control commands and intervenes in the pumping equipment according to the remote control commands.

7. An intelligent control device capable of automatically extracting seawater, characterized in that, include: A water level sensor is used to detect the current water level. Water quality sensors are used to detect the electrical conductivity of a current water body; The communication module is used to connect to the network to obtain current time and tidal time data; The location module is used to obtain the current geographical location; The control module, connected to the water level sensor, the water quality sensor, the communication module and the positioning module, is used to determine whether the pumping conditions are met based on the current water level, the conductivity, the current time, the current geographical location and the tidal time data, and output a pumping control signal when the pumping conditions are met. A relay control interface, connected to the control module, is used to control the power supply of the pumping equipment according to the pumping control signal.

8. The intelligent control device according to claim 7, characterized in that, The communication module includes a Bluetooth communication module, a cellular communication module, and a wireless local area network communication module; the positioning module is a BeiDou positioning unit integrated in the cellular communication module.

9. The intelligent control device according to claim 7, characterized in that, Also includes: A power conversion module is used to convert the input AC voltage into DC voltage to supply power to the control module, the communication module, and the positioning module.

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