An underwater positioning gateway device and a control circuit thereof

Abstract

The utility model provides a kind of underwater positioning gateway device and its control circuit, including being arranged on the low-power control unit of control panel, logic control unit, the wireless radio frequency module for carrying out wireless communication with underwater positioning node device and the voltage stabilizing module for providing stable voltage for the low-power control unit;Wherein, the power switch module for controlling logic control unit and wireless radio frequency module power switch is equipped in the low-power control unit, 4G communication module for communicating with remote server is equipped in the logic control unit;The beneficial effects of the utility model are that: the utility model adopts the mode of double core to realize the low power consumption of dormancy, wherein low-power control unit controls the power switch of logic control unit and wireless radio frequency module by power switch module, when not need to provide positioning service or not need to provide 4G transmission, the power of logic control unit and wireless radio frequency module power can be turned off.

Description

Technical Field

[0001] This utility model relates to the field of positioning device technology, and in particular to an underwater positioning gateway device and its control circuit. Background Technology

[0002] The Chinese sturgeon is a rare aquatic species endemic to China and is listed as critically endangered. As a migratory fish in the Yangtze River basin, its habits and migration routes are of great significance to ecological and environmental research. However, because the Chinese sturgeon lives in an underwater environment, traditional positioning and monitoring methods have many limitations, such as signal attenuation, low positioning accuracy, and high power consumption. Therefore, to address the needs of Chinese sturgeon conservation and ecological research, this patent proposes an underwater positioning gateway device based on wireless radio frequency communication, which can effectively solve these challenges and provide technical support for the conservation and research of the Chinese sturgeon. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide an underwater positioning gateway device and its control circuit to solve the many limitations of traditional positioning and monitoring methods, such as signal attenuation, low positioning accuracy and high power consumption.

[0004] To achieve the above and other related objectives, this utility model provides the following technical solution:

[0005] An underwater positioning gateway device includes a base with several nails on the bottom side for fixing the underwater positioning gateway device. A solar panel is connected to the top side of the base via a support rod. A protective shell is provided on the support rod between the base and the solar panel. A control panel is provided inside the protective shell, and a control circuit is provided on the control panel. A lithium battery for powering the control circuit is also provided inside the protective shell, and the lithium battery is electrically connected to the solar panel via a wire.

[0006] In one embodiment of the present invention, the underwater positioning gateway device is used to parse and transmit relevant data of the Chinese sturgeon collected by the underwater positioning node device worn on the back or fin of the Chinese sturgeon. The underwater positioning gateway device adopts a ring-shaped layout, and several underwater positioning gateway devices are evenly installed on the shore of the pool at circumferential intervals along the area where the Chinese sturgeon are located.

[0007] A control circuit for an underwater positioning gateway device, based on the underwater positioning gateway device, includes a low-power control unit mounted on a control panel for periodically parsing and transmitting relevant data of Chinese sturgeon collected by an underwater positioning node device, a logic control unit for parsing and transmitting relevant data of Chinese sturgeon collected by the underwater positioning node device, a wireless radio frequency module for wireless communication with the underwater positioning node device, and a voltage regulator module for providing a stable voltage to the low-power control unit. The low-power control unit is connected to the logic control unit, and the logic control unit is connected to the wireless radio frequency module. The low-power control unit includes a power switch module for controlling the power switches of the logic control unit and the wireless radio frequency module, and the logic control unit includes a 4G communication module for communicating with a remote server.

[0008] In one embodiment of the present invention, the low-power control unit includes a low-power MCU chip, the model of which is HC32L130F8UA, and seven control terminals of the low-power MCU chip are connected to the logic control unit through several circuit components.

[0009] In one embodiment of this utility model, the logic control unit adopts a Cat1 network-based processor. The logic control unit includes a logic MCU chip, the model of which is EC600U. Four of the control terminals of the logic MCU chip are connected to the low-power control unit, and two of the control terminals of the logic MCU chip are connected to the wireless radio frequency module.

[0010] In one embodiment of the present invention, the wireless radio frequency module includes a wireless radio frequency chip, the model of which is A39C-T400A22S1a, and two of the control terminals of the wireless radio frequency chip are connected to the logic control unit through several circuit components.

[0011] In one embodiment of the present invention, the voltage regulator module includes a voltage regulator chip and a voltage regulator diode. The voltage regulator chip is a TPS55340PWPR, and two of its control terminals are connected to the voltage regulator diode through two circuit components.

[0012] In one embodiment of this utility model, the power switch module includes a transistor, a field-effect transistor (FET), and a connector. The base of the transistor is connected to the low-power control unit via a 97th resistor. The collector of the transistor is connected to the gate of the FET. The collector of the transistor is also connected to a voltage source and the source of the FET via a 35th resistor. The drain of the FET is connected to the voltage source. The source of the FET is also connected to one control terminal of the connector. The emitter of the transistor and the other control terminal of the connector are both grounded.

[0013] As described above, the underwater positioning gateway device and its control circuit of this utility model have the following advantages: 1. This utility model uses lithium battery + solar power for power supply, does not rely on external power source, and the positioning gateway can be installed in a portable way, making it easy to move.

[0014] 2. This utility model adopts a dual-core approach to achieve low power consumption during sleep mode. The low-power MCU chip controls the power switch of the logic control unit and the wireless radio frequency module through the power switch module. When it is not necessary to provide location services or 4G transmission, the power supply of the logic control unit and the wireless radio frequency module can be turned off.

[0015] 3. This utility model adopts a regional positioning algorithm. Since the radio frequency signal attenuates greatly underwater, the theoretical transmission distance can only reach about 5 meters. Therefore, the positioning gateway adopts a ring installation scheme and is arranged around the pool to complete the regional positioning function. This not only solves the problem of underwater signal attenuation, but also achieves high positioning accuracy. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the underwater positioning gateway device in the first embodiment of this utility model;

[0017] Figure 2 This is a schematic diagram of data transmission between the underwater positioning node device, the underwater positioning gateway device, and the remote server in this utility model;

[0018] Figure 3 This is an overall structural block diagram of the control circuit of the underwater positioning gateway device in the second embodiment of this utility model;

[0019] Figure 4 This is the overall circuit diagram of the control circuit of the underwater positioning gateway device in the second embodiment of this utility model;

[0020] Figure 5 This is the circuit schematic diagram of the low-power control unit in this utility model;

[0021] Figure 6This is the circuit diagram of the power switch module in this utility model;

[0022] Figure 7 This is the circuit schematic diagram of the logic control unit in this utility model;

[0023] Figure 8 This is the circuit schematic diagram of the wireless radio frequency module in this utility model;

[0024] Figure 9 This is the circuit diagram of the voltage regulator module in this utility model;

[0025] Figure 10 This is a flowchart illustrating the low-power consumption implementation in this utility model;

[0026] Figure 11 This is a flowchart illustrating the implementation of the regional positioning algorithm in this utility model.

[0027] Component designation explanation

[0028] 1. Base; 2. Nails; 3. Support rod; 4. Solar panel; 5. Protective shell; 6. Wires; 7. Ground. Detailed Implementation

[0029] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. It should be noted that, unless otherwise specified, the following embodiments and features described herein can be combined with each other.

[0030] The first embodiment of this utility model relates to an underwater positioning gateway device. Please refer to [link / reference]. Figure 1 The system includes a base 1, with several nails 2 on the bottom side for fixing the underwater positioning gateway device. A solar panel 4 is connected to the top side of the base 1 via a support rod 3. The nails 2 can fix the underwater positioning gateway device at the installation position. After installation, the base 1 is buried underground, and the distance between the base 1 and the ground 7 after burial is about 30 cm. In this embodiment, the base 1 is square with a side length of 225 mm, and the solar panel 4 is 350 mm long and 240 mm wide. A protective shell 5 is provided on the support rod 3 between the base 1 and the solar panel 4. A control panel is provided inside the protective shell 5, and a control circuit is provided on the control panel. A lithium battery for powering the control circuit is also provided inside the protective shell 5. The lithium battery is electrically connected to the solar panel 4 via a wire 6.

[0031] This underwater positioning gateway device is used to analyze and transmit relevant data of the Chinese sturgeon collected by underwater positioning node devices worn on the back or fins of the Chinese sturgeon. The underwater positioning gateway device adopts a ring layout, with several underwater positioning gateway devices evenly installed at intervals around the circumference of the pool area where the Chinese sturgeon are located. The positioning gateway adopts a ring layout, with multiple positioning gateways installed at intervals of 5 meters around the pool. In this way, each pool area is covered by multiple gateways, avoiding the occurrence of signal blind spots and solving the problem of underwater signal attenuation.

[0032] Specifically, the underwater positioning device consists of multiple underwater positioning node devices and multiple underwater positioning gateway devices installed around the perimeter of the pool. The underwater node devices are attached to the Chinese sturgeon and communicate with the shore-based gateway via low-frequency radio frequency signals. The gateway is responsible for receiving the node signals, processing the data, and performing positioning calculations. For details, please refer to [link to details]. Figure 2 .

[0033] More specifically, the underwater positioning gateway device employs a power supply design combining lithium batteries and solar energy. The main purpose is to ensure long-term stable operation of the system through an independent energy supply method and to provide a portable installation method. 1. Lithium battery power supply: Due to its high energy density, long lifespan, and low self-discharge rate, lithium batteries have become a common battery choice for underwater positioning systems. The lithium batteries used in the positioning gateway not only provide high voltage and sufficient power support but also maintain normal operation of the device for a long time. Furthermore, lithium batteries are lightweight and compact, making them ideal for portable and compact underwater positioning devices. 2. Solar energy supply: To enhance the independence of the positioning gateway and reduce dependence on external power sources, this invention adds a solar panel 4 to the lithium battery. The solar module automatically converts sunlight into electrical energy during the day to charge the lithium battery in real time, thus achieving continuous power supply for the device. Around the pool, the solar panels maximize the use of natural resources, reducing dependence on external power sources, making it highly applicable, especially in remote areas or waters lacking power infrastructure.

[0034] By combining solar power and lithium batteries for power supply, the positioning gateway can effectively extend its working time and ensure long-term stable operation in environments without external power supply. This design enables the underwater positioning gateway to be portable, facilitating movement and deployment in different pools and environments, and eliminating the need for frequent battery replacements.

[0035] The second embodiment of this utility model relates to a control circuit for an underwater positioning gateway device. Please refer to [link / reference needed]. Figures 3 to 4It includes: a low-power control unit, a logic control unit, a wireless radio frequency module, and a voltage regulator module; wherein, the low-power control unit is equipped with a power switch module, and the logic control unit is equipped with a 4G communication module.

[0036] Please see Figure 5 and Figure 6 The low-power control unit includes a low-power MCU chip and other circuit components. The power switch module includes transistors, field-effect transistors, pins and other circuit components. In this embodiment, the low-power MCU chip is model HC32L130F8UA and the field-effect transistor is model SK2307A. The following description uses the low-power MCU chip U6, transistor Q15, field-effect transistor Q8 and pin P3 as examples.

[0037] The third, fourth, seventh to ninth, twenty-first, and twenty-second pins of the low-power MCU chip U6 are seven control terminals. These pins are connected to the logic control unit via several circuit components. The low-power MCU chip U6 is responsible for the power management of the entire system. When in sleep mode, the low-power MCU shuts down all power to the RF module and the logic MCU. When sleep mode is required, the low-power MCU shuts down the power supply to the RF module and the logic MCU via a power switch module to achieve minimum power consumption. This invention uses a dual-core approach to achieve low-power sleep mode. The low-power control unit manages all power switches of the device. When location services or 4G transmission are not required, the RF power supply and the logic MCU power supply can be shut down.

[0038] The base of transistor Q15 is connected to the low-power control unit via resistor R97 (97th resistor). The collector of transistor Q15 is connected to the gate of field-effect transistor Q8. The collector of transistor Q15 is also connected to the voltage source and the source of field-effect transistor Q8 via resistor R35 (35th resistor). The drain of field-effect transistor Q8 is connected to the voltage source. The source of field-effect transistor Q8 is also connected to one control terminal of connector P3. The emitter of transistor Q15 and the other control terminal of connector P3 are both grounded. The low-power MCU controls the power switch of the logic MCU and the RF module through field-effect transistor Q8. When a module needs to work, the corresponding MOSFET is turned on; otherwise, the corresponding MOSFET is turned off.

[0039] Please see Figure 7 The logic control unit includes a logic MCU chip and other circuit components. In this embodiment, the logic MCU chip is Quectel EC600U. The following explanation will use logic MCU chip U1 as an example.

[0040] Pins 31 to 33 and 120 of the logic MCU chip U1 are four control terminals, all of which are connected to a low-power control unit. Pins 103 and 104 of the logic MCU chip U1 are two control terminals, both of which are connected to a wireless radio frequency module. The logic MCU unit receives positioning data from the underwater positioning node device via the wireless radio frequency module and transmits it to a remote server via its internal 4G communication module. This invention uses a Cat1 module as the logic MCU, achieving communication with the radio frequency module based on the Cat1 module's baseband function to realize the positioning function. Furthermore, the Cat1 module enables data synchronization between the positioning data and the server.

[0041] It should be noted that in this utility model, the Cat1 module, as a logic MCU (microcontroller unit), is responsible for the core computing tasks of the underwater positioning gateway, including radio frequency communication, positioning data processing, and remote server data synchronization. 1. Advantages of the Cat1 module: The Cat1 module is a low-power communication module based on cellular networks, widely used in Internet of Things (IoT) devices. Compared with traditional communication modules, the Cat1 module has lower power consumption and better coverage, making it very suitable for data transmission requirements in underwater positioning systems. It supports wide area network (WAN) communication and can achieve remote data synchronization via 4G networks. In the positioning gateway, the Cat1 module realizes communication and positioning functions with the radio frequency module, and also undertakes the synchronization work between data and the remote server. Through the Cat1 module, the positioning gateway can upload the collected positioning data, RSSI values, and water quality data to the remote server in real time for researchers to analyze and process.

[0042] 2. Positioning Data Synchronization and Remote Communication: In underwater positioning systems, real-time data synchronization is crucial for ensuring positioning accuracy and system stability. The Cat1 module provides stable 4G communication capabilities, enabling the positioning gateway to transmit collected positioning and sensor data to a remote server in a timely manner. Through data interaction with the server, this invention can provide real-time feedback on the location and status of the Chinese sturgeon, ensuring rapid response from researchers. Furthermore, the Cat1 module possesses strong anti-interference capabilities and a long transmission distance, adapting to complex underwater environments and ensuring stable system operation even when far from an external power source, thus facilitating its promotion and use.

[0043] Please see Figure 8The wireless radio frequency module includes a wireless radio frequency chip and other circuit components. In this embodiment, the model of the wireless radio frequency chip is A39C-T400A22S1a. The following description uses the wireless radio frequency chip U3 as an example. The third and fourth pins of the wireless radio frequency chip U3 are two of its control terminals. The third and fourth pins of the wireless radio frequency chip U3 are connected to the low-power control unit through several circuit components. The wireless radio frequency module is responsible for wireless radio frequency communication with the positioning node. The power supply of this module is controlled by the low-power control unit, and it is connected to the logic control unit through a serial port.

[0044] Please see Figure 9 The voltage regulator module includes a voltage regulator chip, a Zener diode, and other circuit components. In this embodiment, the voltage regulator chip is a TPS55340PWPR. The following description uses voltage regulator chip U7 and Zener diode D7 as examples. The first and second pins of voltage regulator chip U7 are two control terminals. The first and second pins of voltage regulator chip U7 are connected to Zener diode D7 through two circuit components. The voltage regulator module provides a stable power supply to the low-power control unit. The voltage regulator module is connected to the lithium battery and stabilizes the power supply to 4V to power the low-power control unit.

[0045] Specifically, the underwater positioning gateway device consists of a power supply module, a wireless radio frequency module, a low-power management unit, and a Logitech control unit. The underwater positioning system is a novel technology based on wireless radio frequency (RF) communication and positioning algorithms, which can acquire the location information of aquatic organisms in the underwater environment. This invention proposes an underwater positioning gateway technology solution suitable for monitoring Chinese sturgeon, based on the deployment of a positioning gateway in a pool, the transmission of heartbeat data by positioning nodes, and the data analysis and positioning algorithm calculation by a remote server.

[0046] More specifically, battery life is crucial in outdoor environments. To maximize the lifespan of the positioning gateway, this invention employs a dual-core low-power processor solution. 1. Dual-core processor architecture: The low-power MCU in the device manages the power switch of the positioning gateway. When the device enters sleep mode, the low-power MCU controls the power switches of each module, shutting down unnecessary functions and devices to reduce power consumption. When the device is in standby mode, only the low-power processor continues to work, monitoring the system status. The logic MCU is used to handle positioning and communication tasks. The logic MCU is only woken up when positioning data transmission is required. Through the collaborative work of the logic MCU and the low-power MCU, the system can achieve ultra-low power operation without sacrificing performance.

[0047] 2. Low-Power Management Strategy: The key to this low-power design is dynamically adjusting the power switch according to task requirements. When the device does not need to provide a positioning server or 4G data transmission, the low-power MCU selectively shuts down the RF power supply or the 4G module power supply to reduce power consumption. Furthermore, when the device needs to collect water quality data, the low-power MCU activates the logic MCU and the wireless RF module to begin data parsing and transmission. After parsing and transmission are complete, the low-power MCU automatically shuts down the logic MCU and the wireless RF module power supply, awaiting the next task execution. This intelligent power management scheme, through periodic control of the power switch, ensures that battery life is extended as much as possible when the device is in low-power mode, while providing sufficient computing and communication capabilities when high-performance processing is required, ensuring stable system operation.

[0048] 3. Low-power implementation process: In the first step of the system, the underwater positioning node (such as the positioning device worn on the Chinese sturgeon) continuously collects relevant data through a heartbeat sensor. This data includes the physiological parameters and activity status of the Chinese sturgeon, and is transmitted to the positioning gateway on the shore via a wireless radio frequency module. The goal of this process is to maintain communication between the node and the gateway and to obtain the node status through radio frequency data; 1) The system first checks whether it is within the scheduled positioning service time. This judgment is based on the scheduling time of the positioning task to ensure that the device works within the specified time window. If it is not within the service time range, the system will enter a sleep mode to avoid unnecessary... 1) Reduce energy consumption; 2) If the system determines that it is not currently in the location service period, the system will automatically enter the sleep state. At this time, the logic MCU, radio frequency module and other unnecessary hardware devices will be turned off to reduce power consumption; the sleep mode ensures that the device will not waste power when it is not performing location services, thus extending battery life; 3) If the system determines that it is currently in the location service period, the system will further check whether the predetermined time point for stopping the location service has been reached. This time point is set according to the system's task scheduling. Once the location service period ends, the device will stop data collection and enter the sleep state. This process ensures that the device works on demand and will not operate excessively for a long time.

[0049] 4) When the device is within the positioning service period and determines to continue, the low-power MCU activates the wireless radio frequency module and begins receiving heartbeat data. The received data is immediately processed and analyzed. After analysis, the heartbeat data is stored in the device's local data storage module to ensure no data loss. The stored data includes heartbeat signal strength information, which is closely related to the status of the Chinese sturgeon. 5) After data acquisition and storage, the logic MCU retrieves a data record from the local database. This record contains heartbeat data and other information, ready for further transmission. 6) The system determines whether data can be successfully sent to the remote server. This step ensures that data transmission is problem-free and guarantees real-time performance and accuracy. If the data is successfully sent, the system proceeds to the next step. If the transmission fails, the system records the error and retryes to ensure that the data is ultimately successfully transmitted. 7) To transmit location data to the remote server, the logic MCU activates the 4G communication module. This step is crucial for transmitting data from the shore-based gateway to the remote server via a wireless network, ensuring researchers can monitor the Chinese sturgeon's dynamic behavior in real time. 8) After successfully transmitting data, the logic MCU automatically deletes the currently collected data to make room for subsequent data acquisition. This deletion operation ensures efficient use of the device's data storage space and avoids data backlog. Deleted data is automatically archived and saved to the server for later analysis by researchers. 9) After data transmission and deletion operations are completed, the low-power MCU returns to sleep mode, shutting down irrelevant modules and awaiting the next task. This wake-up and sleep mode minimizes system power consumption. (See above for further details.) Figure 10 .

[0050] Furthermore, regarding the area positioning algorithm: In underwater environments, due to the influence of water, the attenuation of radio frequency signals is very significant. Traditional positioning methods may not meet the requirements for underwater positioning accuracy. Therefore, this invention adopts an area positioning algorithm, which improves positioning accuracy by rationally deploying positioning gateways and cleverly utilizing the signal attenuation law. 1. Characteristics of underwater radio frequency signals: The propagation of underwater radio frequency signals is affected by water absorption and reflection, and the signal attenuates rapidly. Based on experiments and actual tests, this invention believes that the maximum theoretical propagation distance of underwater radio frequency signals is about 5 meters. Beyond this range, the signal will rapidly attenuate to the point of being unreceiveable. Therefore, the positioning gateways in the pool need to be installed in a ring-like manner to ensure that each pool area is covered by multiple gateways, thereby improving the stability and accuracy of the positioning system.

[0051] 2. Surround Installation Scheme: To address the issue of underwater signal attenuation, the positioning gateways adopt a surround layout. Multiple positioning gateways are installed around the pool at 5-meter intervals, ensuring that each pool area is covered by multiple gateways and avoiding signal blind spots. Since the radio frequency coverage of each gateway is limited to approximately 5 meters, through the collaboration between multiple gateways, the remote server can estimate the distance between the node and each gateway based on the received signal strength (RSSI), and then use positioning algorithms to calculate the approximate location of the positioning node in the pool. This area positioning method has strong adaptability in complex underwater environments, effectively improving positioning accuracy and meeting the needs for precise tracking of underwater objects.

[0052] 3. Implementation process of the area positioning algorithm (please refer to [link / reference] for details) Figure 11 1) Multi-gateway coverage: The collaborative work of multiple gateways can effectively avoid signal blind spots, especially when underwater signal propagation is affected by environmental interference. Through the alternating coverage of multiple gateways, the system can ensure that even if the signal of one gateway is severely attenuated, other gateways can still provide supplementary coverage; 2) Optimized location distribution: Each location in the pool can be covered by multiple gateways, thereby achieving accurate positioning. When a node (such as an underwater positioning device) transmits a signal via radio frequency, multiple gateways can receive these signals and calculate the relative distance between the node and the gateway based on the signal strength (RSSI); (RSSI) data: The remote server can calculate the relative distance between the underwater node and each gateway. There is usually a certain relationship between the RSSI value and the distance, but due to the complexity of the underwater environment, this relationship may be affected by factors such as water temperature and current. Therefore, the system needs to be corrected by certain algorithms. 3) RSSI data analysis: Each positioning gateway receives a signal from the underwater node and records the strength of the signal. By measuring the RSSI value, the remote server can make a preliminary estimate of the distance between the node and the gateway. The stronger the signal strength, the closer the node is to the gateway; the weaker the signal strength, the farther the node is from the gateway.

[0053] 4) Positioning Algorithm: To accurately calculate the node's location, this invention employs an RSSI-based positioning algorithm. With the cooperation of multiple gateways, the remote server combines the signal strength information received by multiple gateways to estimate the node's precise location. Using algorithms such as trilateration and weighted average, the remote server can comprehensively analyze and process the information from multiple gateways to estimate the node's approximate location. After the gateway receives the node's signal and performs preliminary processing, the positioning data is transmitted to the remote server via a wireless network (such as 4G). The remote server further analyzes and processes this data. 5) Data Decoding and Processing: After receiving the data transmitted from the gateway, the remote server first decodes the RSSI information and other related data. Based on the signal strength received by different gateways and combined with the positioning algorithm, the server further improves the positioning accuracy. 6) Precise Positioning and Calculation: The remote server performs position calculations using the received data, employing suitable positioning algorithms such as TDOA (Time Difference of Origin) or RSSI positioning methods to estimate the node's location. With the cooperation of multiple gateways, the server can accurately determine the area where the underwater node is located and provide real-time feedback to the user.

[0054] 7) Storage and Analysis: Location data is stored in a database on a remote server, allowing researchers to view the activity trajectory and location data of the Chinese sturgeon at any time. Furthermore, this invention can analyze historical data to help researchers understand the behavioral patterns and ecological environment of the Chinese sturgeon. This surround-layout positioning method is particularly suitable for complex underwater environments and has the following advantages: Comprehensive Signal Coverage: Through the cooperation of multiple positioning gateways, the system can achieve comprehensive signal coverage within the pool area, avoiding blind spots caused by insufficient coverage of a single gateway; Precise Positioning: The system utilizes RSSI data received from multiple gateways and combines it with positioning algorithms to accurately calculate the location of underwater nodes. This method not only solves the problem of underwater signal attenuation but also maintains high positioning accuracy in complex underwater environments; Adaptability to Complex Underwater Environments: Underwater environments vary greatly, including water flow, temperature, and turbidity, all of which affect the propagation of radio frequency signals. The surround-layout layout, through the cooperation of multiple gateways, reduces the impact of environmental changes and improves the system's adaptability; Strong Scalability: The layout design of this positioning method has good scalability. If the pool area is large or higher positioning accuracy is required, the accuracy and coverage of the system can be further improved by increasing the number of gateways.

[0055] In summary, this invention uses a lithium battery and solar power supply, eliminating reliance on an external power source. The positioning gateway can be installed in a portable manner, facilitating easy relocation. This invention employs a dual-core architecture to achieve low power consumption during sleep mode. The low-power MCU manages all power switches of the device, and can shut down the power to the logic MCU and wireless RF module when positioning services or 4G transmission are not required. This invention uses a regional positioning algorithm. Due to the significant attenuation of RF signals underwater, the theoretical transmission distance is only about 5 meters. Therefore, the positioning gateway is installed in a ring around the perimeter of the pool to facilitate regional positioning.

[0056] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. All equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An underwater positioning gateway device, comprising a base (1), characterized in that: The base (1) has several nails (2) on its bottom side for fixing the underwater positioning gateway device. The top side of the base (1) is connected to a solar panel (4) via a support rod (3). The support rod (3) has a protective shell (5) located between the base (1) and the solar panel (4). The protective shell (5) has a control panel inside. The control panel has a control circuit. The protective shell (5) also has a lithium battery for powering the control circuit. The lithium battery is electrically connected to the solar panel (4) via a wire (6).

2. The underwater positioning gateway device according to claim 1, characterized in that: The underwater positioning gateway device is used to analyze and transmit relevant data of the Chinese sturgeon collected by the underwater positioning node device worn on the back or fin of the Chinese sturgeon. The underwater positioning gateway device adopts a ring layout, and several underwater positioning gateway devices are evenly installed on the shore of the pool area where the Chinese sturgeon are located.

3. A control circuit for an underwater positioning gateway device, characterized in that: The underwater positioning gateway device according to any one of claims 1-2 includes a low-power control unit disposed on the control panel for periodically parsing and transmitting relevant data of Chinese sturgeon collected by the underwater positioning node device, a logic control unit for parsing and transmitting relevant data of Chinese sturgeon collected by the underwater positioning node device, a wireless radio frequency module for wirelessly communicating with the underwater positioning node device, and a voltage regulator module for providing a stable voltage to the low-power control unit. The low-power control unit is connected to the logic control unit, and the logic control unit is connected to the wireless radio frequency module. The low-power control unit includes a power switch module for controlling the power switches of the logic control unit and the wireless radio frequency module, and the logic control unit includes a 4G communication module for communicating with a remote server.

4. The control circuit of the underwater positioning gateway device according to claim 3, characterized in that: The low-power control unit includes a low-power MCU chip, model HC32L130F8UA, and seven control terminals of the low-power MCU chip are connected to the logic control unit through several circuit components.

5. The control circuit of an underwater positioning gateway device according to claim 3, characterized in that: The logic control unit uses a Cat1 network-based processor and includes a logic MCU chip, model EC600U. Four control terminals of the logic MCU chip are connected to the low-power control unit, and two control terminals of the logic MCU chip are connected to the wireless radio frequency module.

6. The control circuit of an underwater positioning gateway device according to claim 3, characterized in that: The wireless radio frequency module includes a wireless radio frequency chip, the model of which is A39C-T400A22S1a. Two of the control terminals of the wireless radio frequency chip are connected to the logic control unit through several circuit components.

7. The control circuit of an underwater positioning gateway device according to claim 3, characterized in that: The voltage regulator module includes a voltage regulator chip and a voltage regulator diode. The voltage regulator chip is a TPS55340PWPR, and two of its control terminals are connected to the voltage regulator diode through two circuit components.

8. The control circuit of an underwater positioning gateway device according to claim 3, characterized in that: The power switch module includes a transistor, a field-effect transistor (FET), and a connector. The base of the transistor is connected to the low-power control unit via a 97th resistor. The collector of the transistor is connected to the gate of the FET. The collector of the transistor is also connected to a voltage source and the source of the FET via a 35th resistor. The drain of the FET is connected to the voltage source. The source of the FET is also connected to one control terminal of the connector. The emitter of the transistor and the other control terminal of the connector are both grounded.

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