Chinese sturgeon enhancement and release device based on Beidou navigation system and control circuit of Chinese sturgeon enhancement and release device

Abstract

The invention provides a Chinese sturgeon enhancement and release device based on a Beidou navigation system and a control circuit of the Chinese sturgeon enhancement and release device. The Chinese sturgeon enhancement and release device comprises a low-power-consumption control module and a Beidou third-generation communication module, wherein the low-power-consumption control module is arranged on a main control panel and is used for periodically controlling a sensor to collect data related to Chinese sturgeons when departure time is not up; the positioning wave band module, the L wave band module and the S wave band module are arranged on the antenna control panel and are respectively connected with the positioning wave band antenna, the L wave band antenna and the S wave band antenna of the Beidou third generation; wherein a first power switch sub-module, a second power switch sub-module and a third power switch sub-module are arranged in the low-power-consumption control module; the Chinese sturgeon enhancement and release device has the advantages that all materials of the device are localized, the latest Beidou third-generation short message transmission module is arranged in the device, and the completely autonomous and controllable Chinese sturgeon enhancement and release device is achieved by combining the ultra-low power consumption technology, the customized Beidou linear polarization antenna technology and the underwater separation technology.

Description

Technical Field

[0001] The present invention relates to the technical field of Chinese sturgeon proliferation and release devices, and in particular to a Chinese sturgeon proliferation and release device based on a Beidou navigation system and a control circuit thereof. Background Art

[0002] The Chinese sturgeon is a rare and endangered species unique to my country. It is known as the "living fossil in the water" and has extremely high ecological and scientific research value. However, due to factors such as habitat loss, water pollution, overfishing, and water conservancy project construction, the wild population of the Chinese sturgeon has dropped sharply and is on the verge of extinction. In response to this crisis, my country has carried out large-scale artificial reproduction and release since the 1980s. At present, the reproduction and release of the Chinese sturgeon mainly relies on artificial breeding and marked release technology. At present, the main problems with marked release are as follows:

[0003] 1. Dependence on imported equipment and inability to achieve full localization: At present, the release devices used in the reproduction and release of Chinese sturgeon mainly rely on imported products, and the country has not yet achieved full localization of this technology. This reliance on imports has brought about the following problems: 1) Technology is controlled by others: Since the core technology of the release device is in the hands of foreign companies, my country is subject to greater restrictions in equipment selection, upgrading and maintenance, and it is difficult to independently improve or optimize the equipment. 2) High cost: Imported equipment is relatively expensive, not only the procurement cost is high, but also the maintenance and replacement of parts are relatively expensive, which increases the economic burden of Chinese sturgeon protection. 3) Insufficient adaptability: Imported release devices are often designed according to the needs of foreign aquatic species, and may not fully meet the biological characteristics of Chinese sturgeon and the characteristics of my country's water environment. For example, some imported equipment may not be able to effectively adapt to the hydrological conditions of the Yangtze River Basin during the release process, affecting the release effect.

[0004] 2. Serious data security issues and reliance on foreign satellites: The tracking technology used in current imported release devices usually relies on foreign satellites for data transmission. The data needs to be transmitted to foreign servers first and then back to China. This mode brings the following risks: 1) Data privacy leakage: The release data of Chinese sturgeon involves important information on national biodiversity protection, including its movement tracks, ecological habits, and habitat distributions. If this data is first transmitted to foreign servers, it may lead to the leakage of sensitive data, which is not conducive to China's ecological security. 2) Unstable data access: Since data transmission involves international satellite communication and is greatly affected by international political and economic situations, there may be situations where data access is restricted or communication is interrupted, affecting the continuity and stability of Chinese sturgeon release monitoring work. 3) Slow response speed: The data is first transmitted abroad and then back to China, which increases the data processing delay. If real-time activity information of Chinese sturgeon needs to be quickly obtained for evaluating release effects or emergency intervention, the data processing mode of foreign servers may lead to response lags and affect decision-making efficiency.

[0005] 3. Long procurement cycle and difficulty in synchronizing with domestic release plans: The procurement cycle of imported release devices is relatively long, and procurement plans usually need to be arranged well in advance. However, China's release work is affected by various factors (such as hydrological conditions, policy adjustments, fry supply, etc.) and requires a certain degree of flexibility. However, the procurement characteristics of imported equipment make it difficult to synchronize with domestic release plans, as shown below: 1) Complicated approval process: The procurement of imported equipment usually involves multiple links such as customs, foreign exchange payment, and inspection and quarantine. The whole process is relatively complicated, which may lead to the failure of the equipment to be delivered as planned and affect the normal progress of release work. 2) Long delivery cycle: The production cycle of foreign suppliers, logistics transportation, and international customs clearance and other factors will affect the delivery time of the equipment. Release work usually has a strict time window. Once the equipment cannot arrive on time, the best release opportunity may be missed. 3) Inability to replenish equipment in a timely manner: During the release process, equipment may need to be replenished due to damage or loss. However, the re-purchase of imported equipment requires a long waiting time, affecting the continuity of release work. Summary of the Invention

[0006] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a Chinese sturgeon enhancement release device based on the Beidou navigation system and its control circuit, which is used to solve the problems in the prior art of relying on imported equipment and being unable to achieve complete domesticization, serious data security issues, reliance on foreign satellites, and long procurement cycles and difficulty in synchronizing with domestic release plans.

[0007] To achieve the above purpose and other related purposes, the present invention provides the following technical solutions:

[0008] A Chinese sturgeon enhancement release device based on the Beidou navigation system, comprising a protective shell and a protective cover installed on the protective shell. One end of the protective shell away from the protective cover is provided with a detachment member installed on the Chinese sturgeon through a steel wire rope. Among them, a main control panel is provided inside the protective shell, a main control circuit is provided on the main control panel, a micro battery for powering the main control circuit is also provided inside the protective shell, an antenna control panel and three Beidou linear polarization antennas of different frequency bands are provided inside the protective cover, an antenna control circuit connected to the main control circuit and the three Beidou linear polarization antennas is provided on the antenna control panel, and one end of the three Beidou linear polarization antennas away from the antenna control panel passes through the protective cover and extends outside the protective cover.

[0009] In an embodiment of the present invention, the three Beidou linear polarization antennas are respectively a positioning frequency band antenna, an L-band antenna, and an S-band antenna of Beidou-3. The Beidou linear polarization antenna includes an antenna feeder, and a protective layer is provided on the outer surface of the antenna feeder. The protective layer in this technical solution adopts a composite silicone material.

[0010] In an embodiment of the present invention, the protective shell includes a first shell and a second shell integrally formed with the first shell. The main control panel and the micro battery are located inside the first shell. A micro motor is installed below the main control panel inside the second shell. A threaded column is connected to the output shaft of the micro motor. A threaded groove matching the threaded column is provided in the detachment member corresponding to the threaded column. Two limiting members are installed on the detachment member, and limiting grooves matching the limiting members are provided in the second shell corresponding to the limiting members.

[0011] A control circuit of a Chinese sturgeon enhancement release device based on the Beidou navigation system, based on the above-mentioned Chinese sturgeon enhancement release device based on the Beidou navigation system, includes a low-power consumption control module provided on the main control panel for periodically controlling a sensor to collect data related to the Chinese sturgeon when the detachment time has not arrived and a Beidou-3 communication module for wireless communication with a Beidou satellite server; it also includes a positioning frequency band module, an L-band module, and an S-band module respectively connected to the positioning frequency band antenna, the L-band antenna, and the S-band antenna of Beidou-3 provided on the antenna control panel. The low-power consumption control module is connected to the Beidou-3 communication module, and the Beidou-3 communication module is respectively connected to the positioning frequency band module, the L-band module, and the S-band module; among them, a first power switch sub-module for controlling the power switch of the Beidou-3 communication module, a second power switch sub-module for controlling the power switch of the sensor, and a third power switch sub-module for controlling the power switch of the micro motor are provided inside the low-power consumption control module.

[0012] In an embodiment of the present invention, the low-power control module includes a low-power MCU chip and a sensor chip. Two control terminals of the low-power MCU chip are both connected to the Beidou-3 communication module. Two control terminals of the low-power MCU chip are both connected to the sensor chip. Three control terminals of the low-power MCU chip are respectively connected to the first power switch sub-module, the second power switch sub-module, and the third power switch sub-module;

[0013] The first power switch sub-module includes a first field-effect transistor. The gate of the first field-effect transistor is connected to the low-power MCU chip through a plurality of circuit components. The second power switch sub-module includes a second field-effect transistor. The gate of the second field-effect transistor is connected to the low-power MCU chip through a plurality of circuit components. The third power switch sub-module includes a third field-effect transistor and a plug-in. The gate of the third field-effect transistor is connected to the low-power MCU chip through a plurality of circuit components. The drain of the third field-effect transistor is connected to one control terminal of the plug-in.

[0014] In an embodiment of the present invention, the Beidou-3 communication module includes a Beidou-3 communication chip, a first interface connected to the positioning band module, a second interface connected to the L-band module, and a third interface connected to the S-band module. Two control terminals of the Beidou-3 communication chip are respectively connected to the low-power control module through resistors. Two control terminals of the Beidou-3 communication chip are both connected to the first interface through a plurality of circuit components. Two control terminals of the Beidou-3 communication chip are connected to the second interface through two circuit components. One control terminal of the Beidou-3 communication chip is connected to the third interface through a capacitor.

[0015] In an embodiment of the present invention, the positioning band module includes a fourth interface connected to the positioning band antenna of the Beidou-3, a fifth interface connected to the Beidou-3 communication module, and other circuit components. One end of the fourth interface is respectively connected to the positive electrodes of the first capacitor and the second capacitor. One end of the fourth interface is connected to the positive electrode of the third capacitor through a first inductor. One end of the fourth interface is connected to the fourth capacitor through a first inductor and a first resistor. One end of the fourth interface is also connected to the fifth interface through a first inductor and a first resistor. The other end of the fourth interface, and the negative electrodes of the first capacitor to the fourth capacitor are all grounded.

[0016] In an embodiment of the present invention, the L-band module includes a sixth interface connected to the Beidou-3 L-band antenna, a seventh interface connected to the Beidou-3 communication module, and other circuit components. One end of the sixth interface is connected to the positive electrode of the fifth capacitor through a second inductor. One end of the sixth interface is also connected to the positive electrode of the sixth capacitor through a second inductor and a second resistor. One end of the sixth interface is also connected to the seventh interface through a second inductor, a second resistor, and a third inductor. The other end of the sixth interface, the negative electrodes of the fifth capacitor and the sixth capacitor are all grounded.

[0017] In an embodiment of the present invention, the S-band module includes an eighth interface connected to the Beidou-3 S-band antenna, a ninth interface connected to the Beidou-3 communication module, and other circuit components. One end of the eighth interface is connected to the positive electrode of the seventh capacitor through a fourth inductor. One end of the eighth interface is also connected to the positive electrode of the eighth capacitor through a fourth inductor and a third resistor. One end of the eighth interface is also connected to the ninth interface through a fourth inductor, a third resistor, and a fifth inductor. The other end of the eighth interface, the negative electrodes of the seventh capacitor and the eighth capacitor are all grounded.

[0018] In an embodiment of the present invention, it further includes a first voltage stabilizing module, a second voltage stabilizing module, and a third voltage stabilizing module provided on the main control panel. The first voltage stabilizing module is used to provide a stable voltage for the low-power control module, the second voltage stabilizing module is used to provide a stable voltage for the Beidou-3 communication module and the micro-motor, and the third voltage stabilizing module is used to provide a stable voltage for the sensor. The first voltage stabilizing module includes a first voltage stabilizing chip, the second voltage stabilizing module includes a second voltage stabilizing chip, and the third voltage stabilizing module includes a third voltage stabilizing chip.

[0019] As described above, a Chinese sturgeon stocking device based on the Beidou navigation system and its control circuit of the present invention has the following beneficial effects:

[0020] 1. The Beidou linear polarization antenna in the present invention can achieve efficient electromagnetic wave radiation within a smaller size by optimizing the structure and using high-efficiency radiation materials. At the same time, since the smallest Beidou ceramic antenna on the market cannot meet the requirements of volume and weight, a Beidou linear polarization antenna is designed separately to meet the special application scenarios of Chinese sturgeon stocking, with a design of ultra-small volume and weight.

[0021] 2. The present invention has ultra-low power consumption. If the set detachment time has not been reached, the low-power MCU chip will turn on the underwater temperature sensor, record the temperature data, and then enter the sleep state. The low-power MCU chip can turn off the power supplies of the Beidou-3 communication module, the sensor, and the micro-motor through the first power switch sub-module, the second power switch sub-module, and the third power switch sub-module, which maximally reduces the power consumption of the device and thus significantly extends the battery life.

[0022] 3. In the present invention, when the scheduled shedding time arrives, the low-power MCU chip can control the micro motor to rotate, so that the threaded column rotates in the threaded groove. Under the action of the limiter, the main body of the Chinese sturgeon proliferation and release device can be separated from the separation member, thereby solving the problem that the currently imported release device uses the method of separating by fusing the heating wire. This heating separation method has the possibility of failure when being carried out underwater. Secondly, heating requires more battery capacity, which will increase the weight and volume of the device.

[0023] Therefore, all the materials constituting the present invention are all domestically produced. Secondly, the device is equipped with the latest Beidou-3 short message transmission module, combined with ultra-low power consumption technology, customized Beidou linear polarization antenna technology and underwater detachment technology, to realize a completely autonomous and controllable Chinese sturgeon proliferation and release device, thereby solving the problems of reliance on imported equipment, inability to achieve full localization, serious data security issues, reliance on foreign satellites and long procurement cycle, and difficulty in synchronizing with domestic release plans. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Shown is a three-dimensional schematic diagram of a Chinese sturgeon proliferation and release device based on the Beidou navigation system in the first embodiment of the present invention;

[0025] Figure 2 It is a front view schematic diagram of a Chinese sturgeon proliferation and release device based on the Beidou navigation system in the first embodiment of the present invention;

[0026] Figure 3 It is a front cross-sectional schematic diagram of a Chinese sturgeon proliferation and release device based on the Beidou navigation system in the first embodiment of the present invention;

[0027] Figure 4 It is a bottom-up stereoscopic schematic diagram of a protective cover and a protective shell in a Chinese sturgeon proliferation and release device based on the Beidou navigation system in the first embodiment of the present invention;

[0028] Figure 5 Shown is a three-dimensional schematic diagram of a detachment member in a Chinese sturgeon proliferation and release device based on the Beidou navigation system in the first embodiment of the present invention;

[0029] Figure 6 Shown is a schematic diagram of the overall dimensions of the Chinese sturgeon proliferation and release device based on the Beidou navigation system in the present invention;

[0030] Figure 7 Shown is a schematic diagram of the overall dimensions of the PCB board of the antenna control panel of the present invention;

[0031] Figure 8 Shown is a physical schematic diagram of a PCB board of an antenna control panel in the present invention;

[0032] Figure 9 Shown as a schematic cross-sectional view between the protective shell and the detachment member in the present invention;

[0033] Figure 10 Shown as a schematic diagram of the physical object of the protective shell and the detachment member in the present invention;

[0034] Figure 11 Shown as the overall structural block diagram of the control circuit of the Chinese sturgeon proliferation and release device based on the Beidou navigation system in the second embodiment of the present invention;

[0035] Figure 12 Shown as the overall circuit schematic diagram of the control circuit of the Chinese sturgeon proliferation and release device based on the Beidou navigation system in the second embodiment of the present invention;

[0036] Figure 13 Shown as the circuit schematic diagram of the low-power consumption control module in the present invention;

[0037] Figure 14 Shown as the circuit schematic diagram of the first power switch sub-module in the present invention;

[0038] Figure 15 Shown as the circuit schematic diagram of the second power switch sub-module in the present invention;

[0039] Figure 16 Shown as the circuit schematic diagram of the third power switch sub-module in the present invention;

[0040] Figure 17 Shown as the circuit schematic diagram of the Beidou generation-3 communication module in the present invention;

[0041] Figure 18 Shown as the circuit schematic diagram of the positioning band module in the present invention;

[0042] Figure 19 Shown as the circuit schematic diagram of the L-band module in the present invention;

[0043] Figure 20 Shown as the circuit schematic diagram of the S-band module in the present invention;

[0044] Figure 21 Shown as the circuit schematic diagram of the first voltage stabilizing module in the present invention;

[0045] Figure 22 Shown as the circuit schematic diagram of the second voltage stabilizing module in the present invention;

[0046] Figure 23 Shown as the circuit schematic diagram of the third voltage stabilizing module in the present invention;

[0047] Figure 24 Shown as the schematic diagram of the input power consumption of the low-power consumption MCU in the present invention;

[0048] Figure 25 It shows the working flowchart of the Chinese sturgeon proliferation and release device in the present invention.

[0049] Description of component labels

[0050] 1. Protective shell; 101. First shell; 102. Second shell; 2. Protective cover; 3. Detachment part; 4. Positioning band antenna; 5. L-band antenna; 6. S-band antenna; 7. First through hole; 8. Thread groove; 9. Limiting part; 10. Limiting groove; 11. Second through hole. Specific embodiments

[0051] The following uses specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0052] The first embodiment of the present invention relates to a Chinese sturgeon proliferation and release device based on the Beidou navigation system. Please refer to Figures 1 to 5 , which includes a protective shell 1 and a protective cover 2 threadedly connected to the protective shell 1. A detachment part 3 installed on the Chinese sturgeon through a steel wire rope is provided at the end of the protective shell 1 away from the protective cover 2. A first through hole 7 is opened in the detachment part 3, and the steel wire rope passes through the first through hole 7 and is installed on the Chinese sturgeon; wherein, a main control panel is provided inside the protective shell 1, a main control circuit is provided on the main control panel, and a micro battery for supplying power to the main control circuit is also provided inside the protective shell 1. Ultra-low power consumption design is a very important function of the Chinese sturgeon proliferation and release device. Due to volume and weight limitations, the battery of the Chinese sturgeon proliferation and release device must be a micro battery. Therefore, the power of the entire device is limited;

[0053] The protective shell 1 includes a first shell 101 and a second shell 102 integrally formed with the first shell 101. The main control panel and the micro battery are located inside the first shell 101. A micro motor is installed inside the second shell 102 below the main control panel. A threaded column is connected to the output shaft of the micro motor. A thread groove 8 matching the threaded column is opened in the detachment part 3 corresponding to the threaded column. A second through hole 11 is opened in the second shell 102, and the threaded column passes through the second through hole 11 and is threadedly connected to the thread groove 8. Two limiting parts 9 are installed on the detachment part 3, and a limiting groove 10 matching the limiting parts 9 is opened in the second shell 102 corresponding to the limiting parts 9;

[0054] An antenna control panel and three Beidou linear polarization antennas of different bands are arranged in the protective cover 2. The three Beidou linear polarization antennas are respectively the Beidou-III positioning band antenna 4, the L-band antenna 5 and the S-band antenna 6. The Beidou linear polarization antenna includes an antenna feeder. A protective layer is arranged on the outer surface of the antenna feeder. The protective layer is made of composite silicone material. An antenna control circuit connected to the main control circuit and the three Beidou linear polarization antennas is arranged on the antenna control panel. The ends of the three Beidou linear polarization antennas away from the antenna control panel pass through the protective cover 2 and extend outside the protective cover 2.

[0055] Specifically, Beidou linear polarization antenna: Beidou linear polarization antenna radiates and receives electromagnetic waves through the principle of linear polarization. The characteristic of linear polarization antenna is that the vibration direction of the electric field radiated by the antenna is fixed. This type of antenna is usually simpler and can be adjusted in different directions as needed. Compared with traditional circular polarization antennas (such as ceramic antennas), linear polarization antennas have simpler structures, smaller volumes, and lighter weights. In addition, since the Chinese sturgeon reproduction and release device needs to be used in water for a long time, the waterproof performance of the antenna is crucial. Beidou linear polarization antenna adopts a sealed design to ensure that the antenna can be immersed in water for a long time without being damaged. The antenna shell is made of waterproof material and has a high waterproof grade, which can effectively prevent moisture and dirt from entering the antenna, thereby ensuring the long-term and stable operation of the equipment:

[0056] 1. Antenna size: The size optimization of Beidou linear polarization antenna is the key to its lightweight. Traditional ceramic antennas usually require a larger surface area to achieve better gain and coverage, while linear polarization antennas can achieve efficient electromagnetic wave radiation in a smaller size by optimizing the structure and using efficient radiation materials. The length of the antenna is usually controlled between tens of millimeters and 100 millimeters, and the width is narrow, which can effectively reduce weight. Figure 7 This is the dimension diagram of the linear polarized antenna PCB. The final diameter of the control PCB is 23mm. This dimension is the minimum area obtained by combining the shell size of the discharge device and the area requirement of the antenna signal on the reflection surface. Figure 8 In the experiment, three antenna feed lines are welded on the antenna PCB, which are the Beidou III positioning band, L band and S band. Composite silicone material is used to protect the outside of the feed line. The feed line and silicone protective material can make the final antenna lighter in weight and volume.

[0057] 2. Anti-interference design: The linear polarization antenna is carefully designed with polarization direction and antenna array. The distance and length of the three antennas of the positioning band, L band and S band are strictly designed and tested, so that the antenna can effectively suppress interference from other signal sources and ensure that the release equipment can still transmit data stably in complex water environments. For details, please refer to Figure 6 and Figure 7 ;

[0058] 3. Gain Optimization: Although the antenna volume is reduced, the transmit power of the BeiDou-3 communication module in the following text is improved, increasing from 3W at the beginning to 5W, enabling its gain performance to reach the optimal state. By changing the transmit power amplifier inside the BeiDou-3 communication module, the default transmit power amplifier of the BeiDou-3 communication module is 3W. Through customization, the transmit power amplifier inside BeiDou is adjusted to 5W. Appropriate gain ensures that the antenna can work stably in the underwater environment and within a relatively long distance range, ensuring that the positioning and information transmission of the release device on the sea surface are not affected. In addition, before the linear polarization antenna of each release device is finalized, frequency matching and testing are required because there are slight differences in the materials of the outer shells of each device, and the BeiDou antenna is sensitive to such differences. Before assembly, with the assistance of a spectrum analyzer, the impedance value on the antenna PCB is adjusted to ensure that the frequencies of the three antennas in the positioning band, L-band, and S-band are appropriate.

[0059] More specifically, the motor detachment mode: The micro waterproof motor in the present invention drives the detachment action of the device through the rotation or linear movement of the motor; different from the traditional fusing device, the micro motor adopts an electrical control method and can precisely control the switch or movement of the release device at a predetermined time or condition, thereby achieving stable detachment. Before the final assembly of the Chinese sturgeon release device, the motor is reversed by -3.3V. Through the reverse rotation of the motor, the detachment part 3 is pulled into the release device. The two-sided limit parts 9 will also be inserted into the release device synchronously. It can achieve that when the motor rotates, the detachment part 3 remains stationary instead of rotating with the motor. Thus, the motor can slowly pull the detachment part 3 closer to itself through reverse rotation until it can no longer be pulled. When separation is required, the internal PCB provides +5V to drive the motor to rotate forward, and then the detachment part 3 will slowly withdraw from the release device. The reason why the separation voltage is higher than the transfer voltage is to ensure that the separation torque is much greater than the transfer torque, thereby ensuring the stability of separation. Considering that the device will be immersed in seawater for a long time, grease is applied to the contact areas between the detachment part 3 and the release device. On the one hand, it prevents the corrosion of seawater and the adhesion between the detachment part 3 and the release device. On the other hand, it enhances the waterproof effect of the motor.

[0060] The micro motor adopts a highly waterproof design to ensure its long-term stable operation in an underwater environment. The power supply of the micro motor is provided by the PCB inside the discharging device. The micro motor is installed in the second housing 102, and this part is completely potted with epoxy resin. The part of the micro motor in contact with the outside uses a high-strength sealing ring to ensure its complete waterproofness. Compared with the traditional fusing method, the micro waterproof motor method of the present invention can more precisely control the detachment process. For example, the triggering of the detachment action can be at a predetermined time. Through the detachment mechanism driven by the motor, it can ensure that each discharging device is separated from the device at an appropriate moment, avoiding the problems of premature or delayed detachment that may occur during the fusing process, thus ensuring the discharging effect. The detachment method driven by the motor is relatively stable, reducing the risks that may be brought by the traditional fusing device. For example, the fusing device may malfunction due to overheating or other factors, while the motor-driven method has higher controllability and stability and can maintain stable performance for a long time. For details, please refer to Figure 9 and Figure 10 。

[0061] Furthermore, the design of ultra-small volume and weight: When designing the artificial fish release device, one of the most important goals is to minimize the volume and weight of the device as much as possible. The device needs to be fixed on the back of the Chinese sturgeon. Any device that is too heavy or too large will affect the swimming ability of the Chinese sturgeon. An overly large volume will cause excessive resistance during swimming, thus increasing the swimming difficulty of the Chinese sturgeon. An overly heavy device will increase the pressure on the back of the Chinese sturgeon, resulting in unnecessary pulling force at the connection between the device and the Chinese sturgeon, and further affecting the swimming freedom and health of the Chinese sturgeon;

[0062] Therefore, when designing the release device, it is necessary to precisely control the volume and weight of the device while ensuring its functions. To achieve this goal, the present invention adopts lightweight and high-strength composite materials and optimizes the structural design, significantly reducing the overall weight of the device and effectively controlling its volume. Especially in the design of the Beidou linear polarization antenna, the weight and volume of the antenna are optimized by innovatively introducing the linear polarization antenna, ensuring that the overall volume and weight of the device meet the requirements during the swimming process of Chinese sturgeon. In addition to volume and weight, the buoyancy design of the release device is also crucial. In the design, the buoyancy of the release device needs to be slightly greater than its gravity, which can ensure that the device can float freely after detaching from the Chinese sturgeon and smoothly separate from the back of the Chinese sturgeon. However, if the buoyancy is too large, the Chinese sturgeon needs to overcome more buoyancy when swimming, which will increase its swimming resistance and affect its free swimming. Therefore, the balance between buoyancy and gravity is particularly important. Through precise calculation and simulation experiments, the present invention adopts appropriate materials and structural designs to make the buoyancy of the release device slightly greater than its gravity. It should be noted that the density of the antenna material, the shape of the device, and the buoyancy characteristics of other selected components are precisely calculated to ensure that the buoyancy and gravity of the overall device are within the ideal range, thus achieving the optimal detachment effect. The final weight of the device is about 82 g, and the buoyancy is about 95 g. Due to individual differences, when finalizing each device, the weight of the device is controlled at about 82 g by filling epoxy resin. Table 1 lists the weights of each component of the release device.

[0063] Table 1

[0064] Core component Weight (unit: gram) Outer shell 41.3 Antenna 2.5 Hardware PCB 9 Battery 9.9 Motor 7.8 Release device 5.7 Auxiliary material 5 Total weight 81.2

[0065] The second embodiment of the present invention relates to a control circuit of a Chinese sturgeon enhancement release device based on the Beidou navigation system. Please refer to Figure 11 and Figure 12 , which includes: a low-power control module, a Beidou-3 communication module provided on the main control panel, and a positioning band module, an L-band module, and an S-band module provided on the antenna control panel. The Beidou-3 communication module can also be called the Beidou-3 short message module. Among them, the low-power control module is provided with a first power switch sub-module, a second power switch sub-module, and a third power switch sub-module.

[0066] Please refer to Figures 13 to 16, the low-power control module includes a low-power MCU chip, a sensor chip, and other circuit components. The first power switch sub-module includes a first transistor, a first field-effect transistor, and other circuit components. The second power switch sub-module includes a second transistor, a second field-effect transistor, and other circuit components. The third power switch sub-module includes a third transistor, a third field-effect transistor, a plug connector, and other circuit components. In this embodiment, the low-power MCU chip used is the Xiaohua HC32L130F8UA under China Electronics, the model of the sensor chip is SHT30, and the models of the first to third field-effect transistors are all SK2307A. Here, the low-power MCU chip U8, the sensor chip U4, the first transistor Q17, the first field-effect transistor Q9, the second transistor Q15, the second field-effect transistor Q8, the third transistor Q19, the third field-effect transistor Q11, and the plug connector P8 are selected as examples for illustration;

[0067] The eighth and ninth pins of the low-power MCU chip U8 are two of its control terminals, and both the eighth and ninth pins of the low-power MCU chip U8 are connected to the Beidou-3 communication module; the nineteenth and twentieth pins of the low-power MCU chip U8 are two of its control terminals, and both the nineteenth and twentieth pins of the low-power MCU chip U8 are connected to the sensor chip U4; the eleventh, fourteenth, and twenty-fourth pins of the low-power MCU chip are three of its control terminals, and the eleventh, fourteenth, and twenty-fourth pins of the low-power MCU chip are respectively connected to the first power switch sub-module, the second power switch sub-module, and the third power switch sub-module; among them, the sensor chip U4 in this embodiment is a temperature and humidity sensor;

[0068] The base of the first transistor Q17 is connected to the low-power control module through the eleventh resistor R11. The collector of the first transistor Q17 is connected to the gate of the first field-effect transistor Q9. The collector of the first transistor Q17 is also connected to the voltage source and the source of the first field-effect transistor Q9 through the second resistor R2 respectively. The emitter of the first transistor Q17 is grounded, and the drain of the first field-effect transistor Q9 is connected to the voltage source. Among them, the low-power MCU chip U8 controls the power switch of the Beidou-3 communication module by controlling the on and off of the first field-effect transistor Q9;

[0069] The base of the second transistor Q15 is connected to the low-power control module through the twenty-first resistor R21. The collector of the second transistor Q15 is connected to the gate of the second field-effect transistor Q8. The collector of the second transistor Q15 is also connected to the voltage source and the source of the second field-effect transistor Q8 through the twentieth resistor R20 respectively. The emitter of the second transistor Q15 is grounded, and the drain of the second field-effect transistor Q8 is connected to the voltage source. Among them, the low-power MCU chip U8 controls the power switch of the temperature and humidity sensor by controlling the on and off of the second field-effect transistor Q8;

[0070] The base of the third transistor Q19 is connected to the low-power control module through the eighteenth resistor R18. The collector of the third transistor Q19 is connected to the gate of the third field-effect transistor Q11. The collector of the third transistor Q19 is also connected to the voltage source and the source of the third field-effect transistor Q11 through the nineteenth resistor R19 respectively. The emitter of the third transistor Q19 is grounded. The drain of the third field-effect transistor Q11 is connected to one of the control terminals of the connector P8. The other control terminal of the connector P8 is grounded. The connector P8 is used to connect to a micro-motor. Among them, the low-power MCU chip U8 controls the power switch of the micro-motor by controlling the on and off of the third field-effect transistor Q11.

[0071] Please refer to Figure 17 For the Beidou-3 communication module, it includes a Beidou-3 communication chip, a first interface, a second interface, a third interface and other circuit components. In this embodiment, the Beidou-3 communication chip used is the XM1305E of Guangdong Hailiao. Here, the Beidou-3 communication chip U1, the first interface J2, the second interface J3 and the third interface J4 are selected as examples for illustration;

[0072] The tenth and eleventh pins of the Beidou-3 communication chip U1 are two of its control terminals. The tenth and eleventh pins of the Beidou-3 communication chip U1 are respectively connected to the low-power control module through the tenth resistor R10 and the ninth resistor R9. The tenth pin of the Beidou-3 communication chip U1 is connected to the second pin of the positioning chip U2 through the tenth resistor R10 and the sixth resistor R6. The eleventh pin of the Beidou-3 communication chip U1 is connected to the third pin of the positioning chip U2 through the ninth resistor R9 and the twenty-fifth resistor R25. The eleventh pin of the positioning chip U2 is connected to the first interface J2 through the third resistor R3. The first interface J2 is used to connect to the positioning band antenna 4 of Beidou-3; The seventeenth and eighteenth pins of the Beidou-3 communication chip U1 are two of its control terminals. The seventeenth and eighteenth pins of the Beidou-3 communication chip U1 are both connected to the control chip P6. The sixth pin of the control chip P6 is connected to the second interface J3 through the ninth capacitor C9. The second interface J3 is used to connect to the Beidou-3 L-band antenna 5; The twenty-third pin of the Beidou-3 communication chip U1 is one of its control terminals. The twenty-third pin of the Beidou-3 communication chip U1 is connected to the third interface J4 through the tenth capacitor C10. The third interface J4 is used to connect to the Beidou-3 S-band antenna 6.

[0073] Please refer to Figure 18 and Figure 20, the positioning band module includes a fourth interface connected to the positioning band antenna 4 of Beidou-3, a fifth interface connected to the Beidou-3 communication module, and other circuit components. The L-band module includes a sixth interface connected to the Beidou-3 L-band antenna 5, a seventh interface connected to the Beidou-3 communication module, and other circuit components. The S-band module includes an eighth interface connected to the Beidou-3 S-band antenna 6, a ninth interface connected to the Beidou-3 communication module, and other circuit components. Here, the fourth interface P3, the sixth interface P1, and the eighth interface P2 are selected as examples for illustration;

[0074] One end of the fourth interface P3 is respectively connected to the positive electrodes of the first capacitor C9 and the second capacitor C8. One end of the fourth interface P3 is connected to the positive electrode of the third capacitor C3 through the first inductor L1. One end of the fourth interface P3 is connected to the fourth capacitor C2 through the first inductor L1 and the first resistor R1. One end of the fourth interface P3 is also connected to the fifth interface through the first inductor L1 and the first resistor R1. The other end of the fourth interface P3 and the negative electrodes of the first capacitor C9 to the fourth capacitor C2 are all grounded. Among them, L1 is an inductor, R1 is a resistor, and C9, C8, C3, and C2 are capacitors, and they form a π-type circuit of the Beidou positioning band;

[0075] One end of the sixth interface P1 is connected to the positive electrode of the fifth capacitor C5 through the second inductor L4. One end of the sixth interface P1 is also connected to the positive electrode of the sixth capacitor C4 through the second inductor L4 and the second resistor R2. One end of the sixth interface P1 is also connected to the seventh interface through the second inductor L4, the second resistor R2, and the third inductor L2. The other end of the sixth interface P1 and the negative electrodes of the fifth capacitor C5 and the sixth capacitor C4 are all grounded. Among them, L4 and L2 are inductors, C4 and C5 are capacitors, and R2 is a resistor, and they form a matching circuit of the L-band. By adjusting the values of the inductors and capacitors, the matching resistance is maintained at 50 ohms;

[0076] One end of the eighth interface P2 is connected to the positive electrode of the seventh capacitor C6 through the fourth inductor L5. One end of the eighth interface P2 is also connected to the positive electrode of the eighth capacitor C7 through the fourth inductor L5 and the third resistor R3. One end of the eighth interface P2 is also connected to the ninth interface through the fourth inductor L5, the third resistor R3, and the fifth inductor L3. The other end of the eighth interface P2 and the negative electrodes of the seventh capacitor C6 and the eighth capacitor C7 are all grounded. Among them, L5 and L3 are inductors, C6 and C7 are capacitors, and R3 is a resistor, and they form a matching circuit of the S-band.

[0077] Please refer to Figure 11 , and also includes a first voltage stabilization module, a second voltage stabilization module, and a third voltage stabilization module provided on the main control panel.

[0078] Please refer to Figures 21 to 23, the first voltage stabilization module includes a first voltage stabilization chip and other circuit components, the second voltage stabilization module includes a second voltage stabilization chip and other circuit components, and the third voltage stabilization module includes a third voltage stabilization chip and other circuit components. In this embodiment, the model of the first voltage stabilization chip is HT7333-7, the model of the second voltage stabilization chip is TLV62130RGTR, and the model of the third voltage stabilization chip is HT7133-1. Also, in this embodiment, the first voltage stabilization chip is U12, the second voltage stabilization chip is U3, and the third voltage stabilization chip is U5.

[0079] Specifically, for the low-power hardware design: In the hardware architecture of this system, the power supply system is the core, which supplies power to the Beidou-3 communication module and the low-power MCU. Since there are different supply voltages in the entire hardware circuit and there are multiple DC-DC circuits in the design process, to achieve better low-power performance, the conversion rate of the DC-DC circuits should be increased as much as possible. When the device starts Beidou, a current of nearly 2A will be generated. Therefore, when designing the main power supply, the situation of instantaneous large current needs to be considered, and it is necessary to prevent the external input voltage from being pulled down due to the instantaneous large current, which may cause the low-power MCU to malfunction. Large current and low power consumption are contradictory in this power supply system. Therefore, when dealing with the power supply, these two points need to be balanced. Eventually, the power supply system can provide both a relatively large instantaneous current and good low-power performance. The low-power MCU and the Beidou-3 circuit are connected through a serial port. The power supply of the Beidou-3 communication module is controlled by the low-power MCU. Specifically, when to enter the sleep state and how long to sleep are obtained after the low-power MCU runs tasks.

[0080] Regarding the description of the first voltage stabilization chip U12: The power management system design is part of the system hardware structure. Since the low-power MCU needs to be powered continuously, the supply voltage of the low-power MCU is generally 2V to 3.6V, while the power supply input is generally 7V or 12V. Therefore, here it is necessary to step down the high input power supply to 3.3V to supply power to the low-power MCU, and the static power consumption of the voltage stabilization chip should be very low, otherwise the battery power will be consumed quickly. Here, the voltage stabilization chip U12, that is, the first voltage stabilization chip U12, is selected as HT7333-7. Figure 24 This is the operating current situation of HT7333-7, and the static power consumption can be within 2uA. This is the power consumption continuously generated by the entire hardware system. When the entire system enters the low-power state, the low-power single-chip microcomputer is actually still running, but the power consumption is extremely low.

[0081] The description of the second voltage regulator chip U3 is as follows: The voltages required by the Beidou-3 communication module and the micro-motor are ultimately 3.3V to 4V, and there is a current of nearly 2A generated during networking. Therefore, when designing a circuit to regulate the voltage from 12V to 4V, it is necessary to ensure that the circuit can provide a discharge current of more than 2A while providing a 4V voltage. Otherwise, when the Beidou is networking, it is very likely to pull down the voltage at the front end, resulting in the abnormality of the entire system. Figure 22 It is a voltage regulator circuit from DC12V to DC4V, using TLV62130RGTR. Its output voltage range is 0.9V to 5.5V, and the current it can provide is 3A, which can well adapt to the design of this device.

[0082] The description of the third voltage regulator chip U5 is as follows: The third voltage regulator chip U5 is used to provide a stable voltage for the temperature and humidity sensor. When in the normal operation mode, peripheral sensors and other devices need external power supply. Since the external power supply of this system is a battery and its characteristic is unstable voltage, it is necessary to perform voltage regulation on the battery voltage before connecting to the external power supply. Here, the voltage is stabilized through HT7133-1. The output voltage of this circuit is about 3.3V. For details, please refer to Figure 23 ;

[0083] It should be noted that the micro-battery supplies power to the low-power MCU through the first voltage regulation module. When the main switch (the second field effect transistor Q8) is turned on, the second voltage regulation module and the third voltage regulation module are powered on. The micro-battery supplies power to the temperature and humidity sensor through the third voltage regulation module. When (the first field effect transistor Q9 and the third field effect transistor Q11) are turned on, the micro-battery will supply power to the Beidou-3 communication module and the micro-motor respectively through the second voltage regulation module; among them, when the low-power MCU needs to execute low-power sleep, first of all, it will turn off all the power supplies of the Beidou-3 communication module and other peripheral circuits. The second power switch sub-module in the present invention is a main power switch controlled by a MOS transistor. After turning off the main power supply, its static power consumption is within 1uA, and its static power consumption is within the range designed for this system.

[0084] More specifically, low-power software design: The software for deep sleep consists of two main parts. The first part is which logic will enter deep sleep, and the second part is how to enter deep sleep:

[0085] 1. Conditions for deep sleep: The system enters the deep sleep state in the following 4 situations: 1) When low battery is continuously detected multiple times. Each time the system wakes up, it will collect a low voltage signal. If a low battery alarm is detected, the low battery count will be incremented. Once there are multiple consecutive low battery alarms, the system will immediately enter the sleep state to prevent the battery from being damaged due to over-discharge. If the number of low battery occurrences does not exceed the limit value, the system will not enter the sleep state, mainly to prevent misjudgment of the voltage caused by a short-term voltage drop during Beidou dialing; 2) After the system wakes up and finds that it is not yet time to detach, in this case, the device does not need to wake up the acquisition device and directly sleeps for a fixed period of time to save power; 3) When the device is floating on the sea surface but fails to connect to the satellite successfully due to weather conditions after turning on Beidou, it needs to enter the sleep state and wait to reconnect to Beidou next time.

[0086] 2. Logic of deep sleep: Before entering deep sleep, all external power supplies need to be turned off, and all I / O pins of the low-power MCU need to be set to the pull-down mode. Deep sleep is awakened by the RTC, so the RTC interrupt needs to be set before going to sleep. The entire logic of deep sleep has a strict sequence definition. First, all external communication serial ports need to be closed, then the core configuration data in the memory is written to the EEPROM (programmable read-only memory) for easy loading and use during the next wake-up, and then the low-power mode is set through software.

[0087] Furthermore, the working process of the release device (please refer to Figure 25 ): When the device is initialized, a predetermined detachment time will be set, which can be 3 months, 6 months, or 1 year. This is a critical moment for the device to detach from the Chinese sturgeon; when the device is running on the body of the Chinese sturgeon, it will be periodically awakened to check whether the set detachment time has been reached; if the set detachment time has not been reached, the device will turn on the underwater temperature sensor, record the temperature data, and then continue to sleep; if the detachment time has been reached, the device will also record the current temperature data, turn on the power of the motor for motor detachment, and after detachment, the device will sleep for a fixed 4 hours to reserve enough time for the device to float. After 4 hours, the device will wake up, turn on the power of the Beidou-3 communication module, and try to search for Beidou satellites. On the premise that the satellite signal meets the conditions for positioning and sending short messages, the device will try to send the sensor data and positioning data to the Beidou satellite server. If the Beidou satellite signal does not meet the conditions for positioning and sending short messages due to weather or other reasons, the device will put itself to sleep for a period of time and continue to try to search for the satellite signal and send data when it wakes up next time.

[0088] In summary, 1. The Beidou linear polarization antenna with ultra-small volume is adopted in the present invention: Generally, ceramic antennas are used for the short message antennas of the third-generation Beidou. According to different application scenarios, the sizes and weights of ceramic antennas are different, but generally the volume and weight are relatively large. The Chinese sturgeon enhancement release device is worn on the back of the Chinese sturgeon during release, so the weight and volume of the product itself should be minimized as much as possible. Based on this special application scenario, the smallest Beidou ceramic antenna on the market cannot meet the requirements of volume and weight. Therefore, a Beidou linear polarization antenna is designed separately to meet the special application scenario of the Chinese sturgeon enhancement release.

[0089] 2. The present invention adopts an ultra-low power consumption design: The shedding time of the enhancement release device will be configured before release. After the configuration is completed, the release device will be installed on the body of the Chinese sturgeon. Due to the limitations of the device volume and weight, the battery capacity built into the device is only 3.7V / 300mA. Therefore, the enhancement release device requires extremely low power consumption during the dormancy process before shedding, so as to save more power for the final detachment and Beidou message sending as much as possible. An ultra-low power consumption MCU and hardware circuit are adopted in the design of the device, so that the device has extremely low power consumption during dormancy.

[0090] 3. The present invention adopts a motor detachment mode: Currently, the imported release devices adopt the method of electric heating wire fusing for detachment. This heating detachment method may fail when carried out underwater. Secondly, heating requires more battery capacity, which will increase the weight and volume of the device. The detachment method of this invention adopts a micro motor for detachment. When the scheduled detachment time arrives, the low-power processor will be awakened, and then it will control the motor to rotate, so that the main body of the release device is separated from the detachment device. Since the buoyancy of the release device is slightly greater than the gravity during design, the release device will start to float after detachment, thus further realizing the transmission of Beidou messages.

[0091] 4. The present invention adopts a design with ultra-small volume and weight: The enhancement release device has very strict requirements for volume and weight. The placement device is fixed on the back of the Chinese sturgeon during release. Therefore, the weight and volume of the release device should be reduced as much as possible during design to reduce the pulling force generated during the swimming process of the Chinese sturgeon. In design, the overall buoyancy of the release device should be slightly greater than the gravity, otherwise the release device cannot float normally after detachment. However, the buoyancy cannot be much greater than the gravity either, otherwise the Chinese sturgeon needs to overcome more buoyancy during the swimming process. Due to the strict requirements for volume and weight, the present invention has studied the solution of the Beidou linear polarization antenna, because the volume and weight of the Beidou antenna will directly determine the final size and weight of the entire release device.

[0092] The above embodiments are only illustrative of the principles and effects of the present invention and are not intended to limit the present invention. All equivalent modifications or changes made by those of ordinary skill in the art without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A Chinese sturgeon enhancement release device based on the Beidou navigation system, characterized in that: It includes a protective shell (1) and a protective cover (2) installed on the protective shell (1). At one end of the protective shell (1) away from the protective cover (2), there is a detachment member (3) installed on the Chinese sturgeon through a steel wire rope. Among them, a main control panel is provided inside the protective shell (1), a main control circuit is provided on the main control panel, a micro battery for supplying power to the main control circuit is also provided inside the protective shell (1), an antenna control panel and three Beidou linear polarization antennas of different frequency bands are provided inside the protective cover (2), an antenna control circuit connected to the main control circuit and the three Beidou linear polarization antennas is provided on the antenna control panel, and the ends of the three Beidou linear polarization antennas away from the antenna control panel pass through the protective cover (2) and extend outside the protective cover (2).

2. The Chinese sturgeon enhancement release device based on the Beidou navigation system according to claim 1, characterized in that: The three Beidou linear polarization antennas are respectively a positioning frequency band antenna (4) of Beidou-3, an L-band antenna (5), and an S-band antenna (6). The Beidou linear polarization antenna includes an antenna feeder, and a protective layer is provided on the outer surface of the antenna feeder.

3. The Chinese sturgeon breeding and releasing device based on the Beidou navigation system according to claim 1, characterized in that: The protective shell (1) includes a first shell (101) and a second shell (102) integrally formed with the first shell (101). The main control panel and the micro battery are located inside the first shell (101). A micro motor is installed inside the second shell (102) below the main control panel. A threaded column is connected to the output shaft of the micro motor. A threaded groove (8) matching the threaded column is provided in the detachment member (3) correspondingly. Two limiting members (9) are installed on the detachment member (3), and a limiting groove (10) matching the limiting member (9) is provided in the second shell (102) correspondingly.

4. A control circuit for a Chinese sturgeon proliferation and release device based on the Beidou navigation system, characterized in that: The Chinese sturgeon enhancement and release device based on the Beidou navigation system according to claims 1-3 includes a low-power consumption control module provided on the main control panel for periodically controlling a sensor to collect data related to the Chinese sturgeon when the detachment time has not arrived and a Beidou-3 communication module for wireless communication with the Beidou satellite server; it also includes a positioning frequency band module, an L-band module, and an S-band module provided on the antenna control panel and respectively connected to the positioning frequency band antenna (4), the L-band antenna (5), and the S-band antenna (6) of Beidou-3. The low-power consumption control module is connected to the Beidou-3 communication module, and the Beidou-3 communication module is respectively connected to the positioning frequency band module, the L-band module, and the S-band module; Among them, a first power switch sub-module for controlling the power switch of the Beidou-3 communication module, a second power switch sub-module for controlling the power switch of the sensor, and a third power switch sub-module for controlling the power switch of the micro motor are provided inside the low-power consumption control module.

5. The control circuit of the Chinese sturgeon enhancement release device based on the Beidou navigation system according to claim 4, characterized in that: The low-power control module includes a low-power MCU chip and a sensor chip. Two control terminals of the low-power MCU chip are both connected to the Beidou-3 communication module. Two control terminals of the low-power MCU chip are both connected to the sensor chip. Three control terminals of the low-power MCU chip are respectively connected to the first power switch sub-module, the second power switch sub-module, and the third power switch sub-module; The first power switch sub-module includes a first field-effect transistor. The gate of the first field-effect transistor is connected to the low-power MCU chip through a plurality of circuit components. The second power switch sub-module includes a second field-effect transistor. The gate of the second field-effect transistor is connected to the low-power MCU chip through a plurality of circuit components. The third power switch sub-module includes a third field-effect transistor and a plug-in connector. The gate of the third field-effect transistor is connected to the low-power MCU chip through a plurality of circuit components. The drain of the third field-effect transistor is connected to one control terminal of the plug-in connector.

6. The control circuit of the Chinese sturgeon enhancement release device based on the Beidou navigation system according to claim 4, characterized in that: The Beidou-3 communication module includes a Beidou-3 communication chip, a first interface connected to the positioning band module, a second interface connected to the L-band module, and a third interface connected to the S-band module. Two control terminals of the Beidou-3 communication chip are respectively connected to the low-power control module through resistors. Two control terminals of the Beidou-3 communication chip are both connected to the first interface through a plurality of circuit components. Two control terminals of the Beidou-3 communication chip are connected to the second interface through two circuit components. One control terminal of the Beidou-3 communication chip is connected to the third interface through a capacitor.

7. The control circuit of the Chinese sturgeon enhancement release device based on the Beidou navigation system according to claim 4, characterized in that: The positioning band module includes a fourth interface connected to the positioning band antenna (4) of the Beidou-3, a fifth interface connected to the Beidou-3 communication module, and other circuit components. One end of the fourth interface is respectively connected to the positive electrodes of the first capacitor and the second capacitor. One end of the fourth interface is connected to the positive electrode of the third capacitor through a first inductor. One end of the fourth interface is connected to the fourth capacitor through a first inductor and a first resistor. One end of the fourth interface is also connected to the fifth interface through a first inductor and a first resistor. The other end of the fourth interface, and the negative electrodes of the first capacitor to the fourth capacitor are all grounded.

8. The control circuit of the Chinese sturgeon enhancement release device based on the Beidou navigation system according to claim 4, wherein: The L-band module includes a sixth interface connected to the Beidou-3 L-band antenna (5), a seventh interface connected to the Beidou-3 communication module, and other circuit components. One end of the sixth interface is connected to the positive electrode of the fifth capacitor through a second inductor. One end of the sixth interface is also connected to the positive electrode of the sixth capacitor through a second inductor and a second resistor. One end of the sixth interface is also connected to the seventh interface through a second inductor, a second resistor, and a third inductor. The other end of the sixth interface, and the negative electrodes of the fifth capacitor and the sixth capacitor are all grounded.

9. The control circuit of the Chinese sturgeon breeding and releasing device based on the Beidou navigation system according to claim 4, wherein: The S-band module includes an eighth interface connected to the S-band antenna (6) of the third-generation Beidou, a ninth interface connected to the third-generation Beidou communication module, and other circuit components. One end of the eighth interface is connected to the positive electrode of the seventh capacitor through a fourth inductor. One end of the eighth interface is also connected to the positive electrode of the eighth capacitor through a fourth inductor and a third resistor. One end of the eighth interface is also connected to the ninth interface through a fourth inductor, a third resistor, and a fifth inductor. The other end of the eighth interface, the negative electrodes of the seventh capacitor and the eighth capacitor are all grounded.

10. The control circuit of the Chinese sturgeon enhancement and release device based on the Beidou navigation system according to claim 4, characterized in that: It further includes a first voltage stabilizing module arranged on the main control panel for providing a stable voltage to the low-power control module, a second voltage stabilizing module for providing a stable voltage to the third-generation Beidou communication module and the micro-motor, and a third voltage stabilizing module for providing a stable voltage to the sensor. The first voltage stabilizing module includes a first voltage stabilizing chip, the second voltage stabilizing module includes a second voltage stabilizing chip, and the third voltage stabilizing module includes a third voltage stabilizing chip.

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