A ship positioning alarm system and a control method thereof

Abstract

This invention discloses a ship positioning alarm system and its control method, relating to the field of ship positioning alarm technology. The system includes a mounting bracket, a main unit housing, a control board, cables, an external speaker assembly, a fixing mechanism, a covering mechanism, and a plug-in mechanism. The mounting bracket is an integrated structure, simultaneously providing mounting positions for the main unit housing, solar panels, and the external speaker assembly. The fixing mechanism ensures stable cable clamping, resisting ship vibration, preventing loosening, wear, and short circuits, improving wiring reliability, and ensuring continuous and stable alarm operation. The covering mechanism automatically covers and protects the control board, preventing salt spray and moisture intrusion, maintaining interface cleanliness, and improving equipment durability and operational stability. The plug-in mechanism enables quick locking and disassembly of the main unit housing and mounting bracket, providing shock resistance, anti-loosening, and tamper-proof safety, making it suitable for use in harsh ship environments.

Description

Technical Field

[0001] This invention relates to the field of ship positioning alarm technology, specifically a ship positioning alarm system and its control method. Background Technology

[0002] Most existing outdoor target positioning devices, such as those for fishing boats, containers, trailers, and base stations, only have basic positioning and timed data transmission functions. They typically rely on a single built-in battery or external power supply. When these devices are located far from mains power, exposed to prolonged sun and rain, or in scattered locations with inconvenient maintenance, they are prone to problems such as insufficient battery life, limited alerting methods, abnormal conditions that are only visible on the platform without any noticeable audible warnings on-site, and difficulty in timely detection after disassembly. Meanwhile, although some existing traditional positioning devices have been equipped with solar power replenishment structures, external horn structures, or mounting bracket structures, their overall structural reliability and ease of maintenance are still insufficient. For example, related components are prone to damage when exposed to outdoor environments for extended periods, and after a malfunction, the entire device often needs to be disassembled for repair or replacement, which is not conducive to rapid on-site maintenance. In addition, the sound pressure of the external horn of some devices is low, and the on-site warning effect is not obvious in ship, dock, or open-air operation environments, making it difficult to play an effective warning role in a timely manner. Furthermore, the external speaker cables of existing ship positioning alarm systems are mostly freely laid out. They are easily pulled loose, worn, and short-circuited due to long-term exposure to ship vibration and seawater corrosion. Moreover, there is no dedicated clamping and fixing structure, making maintenance cumbersome and prone to alarm failure and equipment malfunction, affecting the safety of use. The control boards of existing ship positioning alarm systems are exposed to the outside for a long time, making them susceptible to corrosion from salt spray, water vapor, and oil, which can cause button malfunctions and interface contamination. In addition, there is no automatic cover structure, which cannot effectively protect the panel in harsh maritime environments, reducing the service life of the equipment. In conclusion, most existing ship positioning alarm systems are fixed with bolts, which are cumbersome to install and disassemble and are prone to loosening. Anti-tamper detection relies on a single sensor, which is easily cracked by force. They also have poor reliability in ship vibration environments and cannot meet the requirements for rapid installation and safety protection. Summary of the Invention

[0003] Therefore, in order to overcome the above-mentioned shortcomings, the present invention provides a ship positioning alarm system and its control method.

[0004] This invention is implemented as follows: a ship positioning alarm system and its control method are constructed. The device includes a mounting bracket, which is an integrated structure and includes a main unit housing, a solar panel mounting position, and an external speaker assembly mounting position, all three integrated together. The main unit housing has an IP protection rating and is equipped with an external interface. Inside the main unit housing are a control board, a positioning module, a communication module, a charging management module, and a battery. A solar panel assembly is located between the mounting bracket and the main unit housing. This solar panel assembly charges the battery of the main unit housing via a waterproof charging interface through the charging management module of the main unit housing. An anti-tamper detection component is located at the bottom of the main unit housing. The magnetic block and the housing work together to form the external speaker assembly. The external speaker assembly is connected to the control board via a cable, and the cable is plugged into the external interface of the main unit housing. In abnormal conditions, the control board drives the sound alarm and simultaneously uploads data to the monitoring platform through the communication module of the main unit housing. The front end of the main unit housing is fixedly connected to a fixing mechanism, the front and rear sides of the top left end of the main unit housing are fixedly connected to a covering mechanism, and the bottom right end of the main unit housing is fixedly connected to a plug-in mechanism. The upper and lower shells of the main unit housing are joined by a sealing ring. The solar panel assembly adopts a laminated encapsulation structure. The external interface adopts an aviation plug-in waterproof connector. The speaker assembly body has heat resistance, cold resistance, moisture resistance and drop resistance to meet the needs of long-term outdoor operation. The fixing mechanism includes a mounting shell, which is fixedly connected to the front end of the main housing. A limiting plate is fixedly connected to the bottom inside the mounting shell. A cylinder is fixedly connected to the top right end of the limiting plate. A gear tooth plate is fixedly connected to the bottom push rod of the cylinder. A turntable is fixedly connected to the front end of the gear tooth plate via a gear rod. The upper and lower sides of the front end of the turntable are rotatably connected to one end of a rotating rod. A clamping plate is rotatably connected to the other end of the rotating rod.

[0005] Preferably, the covering mechanism includes a connecting seat. The front and rear sides of the top left end of the main unit housing are fixedly connected to the connecting seat. A rotating roller is provided between the two sets of connecting seats. A torsion spring is fixedly connected to the connection between the rotating roller and the connecting seat. A cloth is wound around the outer wall of the rotating roller. A metal plate is fixedly connected to the right end of the cloth. The bottom of the metal plate is slidably connected to the slide groove. Sixteen sets of electromagnetic blocks are fixedly connected in the slide groove.

[0006] Preferably, the insertion mechanism includes a socket plate, which is fixedly connected to the bottom right end of the main housing. A micro motor is fixedly connected to the bottom left side of the mounting bracket. A gear set is fixedly connected to the top output shaft of the micro motor, and the gear set consists of two sets of meshing gears. A cam is fixedly connected to the bottom of the right gear of the gear set through a gear rod. The right end of the cam contacts the insertion rod. A spring is sleeved on the outer wall of the insertion rod, and a limit block is fixedly connected to the right end of the spring.

[0007] Preferably, the gear tooth plate component consists of a tooth plate and a gear meshing with the tooth plate. The back of the tooth plate of the gear tooth plate component is slidably connected to the rear end of the inner side of the limiting plate, and the back of the gear of the gear tooth plate component is rotatably connected to the rear end of the inner side of the limiting plate.

[0008] Preferably, the gear tooth plate is fixedly connected to the bottom push rod of the cylinder, and the outer wall of the clamping plate is slidably connected to the front end of the limiting plate and the left end of the mounting shell.

[0009] Preferably, the electromagnetic block is electrically connected to an external current output device, and the electromagnetic block is magnetically attracted to the metal plate.

[0010] Preferably, the bottom of the limiting block is fixedly connected to the bottom of the mounting bracket, and the outer wall of the insertion rod is slidably connected to the limiting block.

[0011] Preferably, a control method based on a ship positioning alarm system includes the following steps: Step 1: Positioning Detection; The positioning module on the main unit casing receives satellite signals from BeiDou, GPS, Galileo, GLONASS, and QZSS to complete the position calculation; Step 2: Installation status detection; the anti-tamper detection component between the mounting bracket and the main unit housing is used to identify whether the main unit has been illegally disassembled; Step 3: Power supply status detection; The battery voltage, power level, and solar power status of the main unit are collected through the charging management module on the main unit casing. Step 4: Protection and Installation Testing; The control board is covered by a cloth by energizing the electromagnetic blocks in stages, and the system is locked by the electromagnetic blocks of the anti-tamper detection component through the plug-in mechanism, and the cables are fixed by the fixing mechanism. Step 5: Anomaly Detection; The control board determines whether the alarm conditions are met based on the location, anti-tampering, power level, and distress signal. Step Six: Alarm Execution; The control board drives the external speaker assembly to emit an alarm sound and uploads the data to the monitoring platform through the communication module in the main unit casing; Step 7: Mode switching; switch between high-frequency positioning mode and static power-saving mode according to vibration and motion status to maintain a balance between continuous battery life and real-time performance.

[0012] The present invention has the following advantages: The present invention provides an improved ship positioning alarm system and its control method, which, compared with similar equipment, has the following improvements: The present invention discloses a ship positioning alarm system and its control method, which includes a fixing mechanism to stably clamp the cable, resist ship vibration, avoid loosening, wear and short circuits, improve wiring reliability, and ensure continuous and stable operation of the alarm function; a covering mechanism to automatically cover and protect the control board, prevent salt spray and water vapor intrusion, keep the interface clean, and improve the durability and operational stability of the equipment; and a plug-in mechanism to enable quick locking and disassembly of the main unit housing and the mounting bracket, which is shockproof, anti-loosening and tamper-proof, and suitable for use in harsh ship environments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the process flow of the present invention; Figure 2 This is a schematic diagram of the axial structure of the present invention; Figure 3 This is a three-dimensional exploded view of the fixing mechanism of the present invention; Figure 4 This is a three-dimensional structural diagram of the covering mechanism of the present invention; Figure 5 This is the present invention. Figure 4 Enlarged structural diagram at point A; Figure 6 This is a three-dimensional exploded view of the insertion mechanism of the present invention; Figure 7 This is the present invention. Figure 6 A magnified structural diagram at point B in the middle.

[0014] The components include: mounting bracket-1, main unit housing-2, control board-3, cable-4, external speaker assembly-5, fixing mechanism-6, mounting shell-61, limit plate-62, cylinder-63, gear tooth plate-64, turntable-65, rotating rod-66, clamping plate-67, covering mechanism-7, connecting seat-71, rotating roller-72, torsion spring-73, cloth pull-out-74, metal plate-75, slide groove-76, electromagnetic block-77, plug-in mechanism-8, socket plate-81, micro motor-82, gear set-83, cam-84, plug rod-85, spring-86, and limit block-87. Detailed Implementation

[0015] The following is in conjunction with the appendix Figures 1-7 The principles and features of the present invention are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0016] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The embodiments of this invention will now be described according to its overall structure.

[0018] Example 1:

[0019] Please see Figures 1-3 The present invention discloses a ship positioning alarm system and its control method, including a mounting bracket 1. The mounting bracket 1 is an integrated structure, and is provided with a main unit housing 2, a solar panel mounting position and an external speaker assembly 5 mounting position. The three are integrated and arranged so that the main unit and the speaker maintain a relatively stable spatial position. The mounting bracket is used to fix the main unit housing 2, the solar panel assembly and the external speaker assembly to the hull, wall, box or other monitored object. The mounting bracket can be set as a plate-shaped or frame-shaped structure, and space is reserved for the arrangement of wires and waterproof connectors.

[0020] The main housing 2 has an IP68 protection rating and is equipped with an external interface. The main housing 2 contains a control board 3, a positioning module, a communication module, a charging management module, and a battery. Waterproof sealing measures are preferably adopted for the main housing, solar panel assembly, and interface connections. The upper and lower shells of the main housing 2 can be sealed with a sealing ring. The solar panel assembly adopts a laminated encapsulation structure. The external interface adopts an aviation plug-in waterproof connector. The speaker assembly body has heat resistance, cold resistance, moisture resistance, and drop resistance to meet the needs of long-term outdoor operation.

[0021] A solar panel assembly is installed between the mounting bracket 1 and the main unit housing 2. This solar panel assembly charges the battery of the main unit housing 2 through a waterproof charging interface via the charging management module of the main unit housing 2. An anti-tamper detection component is installed at the bottom of the main unit housing 2. The anti-tamper detection component consists of an anti-tamper magnetic block that cooperates with the housing. The anti-tamper detection component maintains a predetermined position relationship when the main unit is normally installed. When the main unit is forcibly removed from the mounting base or the anti-tamper magnetic block is removed from the predetermined position, the control board recognizes the change in anti-tamper status and triggers the anti-tamper alarm. This structure can be linked with the platform alarm and the horn alarm.

[0022] The external speaker assembly 5 is connected to the control board 3 via cable 4, and cable 4 is plugged into the external interface of the main unit housing 2. The external speaker assembly is used to receive the drive signal output by the control board 3 and emit on-site prompts or warning sounds. The external speaker can be a speaker body with a diameter of about 61.5mm and a height of about 29mm. Its nominal impedance can be 4Ω, the rated input power is about 3W, the maximum input power is about 5W, and the sound pressure level is about 83±3dB (under the condition of 0.5W / 0.5m). The main unit can be equipped with a 2PIN aviation plug-in speaker interface. The solar panel assembly is preferably connected to the bracket through frame holes, screws or other fasteners. The speaker assembly is preferably connected to the bracket through screws, brackets or housing mounting ears.

[0023] In abnormal conditions, the control board 3 activates an audible alarm and simultaneously uploads data to the monitoring platform via the communication module of the main unit housing 2. A fixing mechanism 6 is fixedly connected to the front of the main unit housing 2, and covering mechanisms 7 are fixedly connected to both the front and rear sides of the top left end of the main unit housing 2. A plug-in mechanism 8 is fixedly connected to the bottom right end of the main unit housing 2. The preferred dimensions of the main unit housing 2 are approximately 189mm × 90mm × 49.5mm. The main unit has a built-in industrial-grade battery with a preferred capacity of approximately 20000mAh to meet the continuous operation requirements of the device under conditions without mains power. The control board 3 is electrically connected to the positioning module, communication module, charging management module, anti-tamper detection component, and speaker interface. The positioning module is used to receive satellite positioning signals from Beidou, GPS, Galileo, GLONASS, QZSS, etc. The communication module... The module is used to upload location and status data to the monitoring platform via the 4G network. The control board 3 outputs corresponding control signals according to the location results, removal status, SOS trigger status, low battery status, or other preset trigger conditions. The solar panel module is used to convert light energy into electrical energy and replenish the battery of the main unit housing 2 through the charging management module of the main unit housing 2. The solar panel module adopts monocrystalline silicon solar panels, and its external dimensions can be approximately 263mm×173mm×17mm, rated power of approximately 8W, operating voltage of approximately 6V, open circuit voltage of approximately 7.2V to 7.27V, maximum operating current of approximately 1.31A, and short circuit current of approximately 1.39A. The solar panel module can adopt EVA encapsulation, aluminum frame structure, and tempered glass surface to improve mechanical strength and environmental adaptability when used outdoors.

[0024] The fixing mechanism 6 includes a mounting shell 61, which is mounted on the front end of the main housing 2 to protect the internal parts. A limiting plate 62 is located inside the mounting shell 61 and below to limit the movement path of the parts. A cylinder 63 is mounted on the upper right side of the limiting plate 62 to provide clamping power. A gear plate 64 converts the thrust of the cylinder 63 into rotational force. A turntable 65 is used to drive the components on both sides to move synchronously. A rotating rod 66 transmits power. A clamping plate 67 directly clamps the cable 4 to prevent loosening and wear.

[0025] The working principle of a ship positioning alarm system and its control method based on Embodiment 1 is as follows: First, when using this device, place it in the work area, and then connect it to an external power source to provide the power required for its operation. Secondly, when using the equipment, the integrated structure of the mounting bracket 1 integrates the main unit housing 2, solar panels, and external speaker assembly 5, maintaining a stable spatial position and fixing them to the monitoring object such as the ship hull. Space is reserved for wiring and waterproof connectors. The main unit housing 2 adopts an IP68 protection rating and internally houses a control board 3, positioning module, communication module, charging management module, and battery. The joint between the upper and lower housings is sealed with a sealing ring or adhesive sealant. Combined with the laminated encapsulation structure of the solar panel assembly and the aviation-grade waterproof connector, it achieves waterproof, dustproof, and salt spray protection. The external speaker assembly 5 is heat-resistant, cold-resistant, moisture-resistant, and drop-resistant, meeting the requirements for long-term outdoor operation. The solar panel assembly converts light energy into electrical energy. The 20000mAh battery is continuously powered by the waterproof charging interface and charging management module to ensure stable operation in environments without mains power. The control board 3 is connected to the positioning module, communication module, anti-tamper detection component and speaker interface respectively. The positioning module receives multi-mode satellite signals such as Beidou and GPS to complete the position calculation. The communication module uploads positioning and status data through the 4G network. The anti-tamper magnetic block at the bottom of the main unit housing 2 maintains the predetermined position during normal installation. Once the device is forcibly disassembled, the anti-tamper magnetic block is removed from the preset position. The control board 3 immediately recognizes the change in anti-tamper status, triggers the external speaker component 5 to emit a high-decibel warning sound, and simultaneously uploads the alarm information and positioning data to the monitoring platform to realize the linkage between on-site alarm and remote reporting. Third, when it is necessary to clamp the cable 4, the cylinder 63 is activated, which drives the gear plate 64 to move linearly. The gear plate 64 drives the turntable 65 to rotate through the gear meshing with it. The turntable 65 synchronously drives the rotating rods 66 on both sides to open and close. The rotating rods 66 drive the clamping plate 67 to move along the limited trajectory, so as to achieve stable clamping and release of the cable 4, effectively resisting ship vibration and preventing the cable from loosening, wearing or short-circuiting.

[0026] Example 2:

[0027] Please see Figures 4-5 The present invention provides a ship positioning alarm system and its control method. Compared with Embodiment 1, this embodiment further includes: a covering mechanism 7, which includes a connecting seat 71, which is fixed to the top of the main housing 2 and supports a rotating roller 72. The rotating roller 72 is used to retract and extend the cloth 74. A torsion spring 73 provides rotational tension so that the cloth 74 can be automatically retracted. The cloth 74 covers the control plate 3 and blocks salt spray and water vapor. A metal plate 75 drives the cloth 74 to move. A slide groove 76 provides a sliding track for the metal plate 75. Sixteen sets of electromagnetic blocks 77 are energized to generate attraction and pull the metal plate 75 to slide. The electromagnetic blocks 77 are electrically connected to an external current output device.

[0028] In this embodiment: When protection of the control board 3 is required, the sixteen sets of electromagnetic blocks 77 are energized step by step through an external current output device. The electromagnetic attraction drives the metal plate 75 to slide along the slide groove 76. The metal plate 75 pulls the cloth 74 to gradually unfold and completely cover the control board 3, blocking the intrusion of salt spray, water vapor and oil. After the electromagnetic blocks 77 are de-energized, the magnetic force disappears, and the torsion spring 73 drives the rotating roller 72 to rotate automatically, smoothly retracting the cloth 74, realizing the automatic protection and reset of the control board 3.

[0029] Example 3:

[0030] Please see Figures 6-7 The present invention provides a ship positioning alarm system and its control method. Compared with Embodiment 1, this embodiment further includes: a plug-in mechanism 8, which includes a plug-in plate 81 located below the main housing 2 for inserting and locking a plug rod 85. A micro motor 82 provides power, a gear set 83 transmits rotational speed and torque, a cam 84 pushes the plug rod 85 to move, and the plug rod 85 achieves plug-in locking. A spring 86 provides a restoring force to allow the plug rod 85 to automatically retract, and a limit block 87 limits the sliding direction of the plug rod 85 to ensure accurate plugging.

[0031] In this embodiment: When it is necessary to install the mounting bracket 1 and the main unit housing 2, start the micro motor 82. The micro motor 82 drives the gear set 83 to mesh and rotate. The gear set 83 drives the cam 84 to rotate synchronously. The cam 84 pushes the insertion rod 85 to slide along the limit block 87 and compress the spring 86, so that the insertion rod 85 is accurately inserted into the insertion plate 81 to complete the secure locking. When the micro motor 82 reverses, the cam 84 releases the insertion rod 85, and the spring 86 pushes the insertion rod 85 to automatically retract, realizing quick disassembly and assembly as well as shock resistance and anti-loosening.

[0032] Example 4:

[0033] Please see Figures 1-7 The present invention provides a ship positioning alarm system and its control method, which, compared to Embodiment 1, includes the following steps: Step 1: Positioning detection; The positioning module in the main unit housing 2 receives signals from BeiDou, GPS, Galileo, GLONASS, and QZSS satellites to complete the position calculation; Step 2: Installation status detection; The anti-tamper detection component between the mounting bracket 1 and the main unit housing 2 is used to identify whether the main unit has been illegally disassembled; Step 3: Power supply status detection; The battery voltage, power level, and solar power status of the main unit housing 2 are collected through the charging management module of the main unit housing 2. Step 4: Protection and Installation Inspection; The control board 3 is covered by the cloth 74 by the electromagnetic block 77 through the step-by-step power supply, and the system is locked by the electromagnetic block of the anti-tamper detection component through the plug-in mechanism 8, and the cable 4 is fixed by the fixing mechanism 6. Step 5: Anomaly detection; Control board 3 determines whether the alarm conditions are met based on positioning, anti-tampering, power level, and distress signal. Step Six: Alarm Execution; Control board 3 drives external speaker assembly 5 to emit an alarm sound, and uploads the data to the monitoring platform through the communication module of the main unit housing 2; Step 7: Mode switching; switch between high-frequency positioning mode and static power-saving mode according to vibration and motion status to maintain a balance between continuous battery life and real-time performance.

[0034] This invention provides an improved ship positioning alarm system and its control method. A fixing mechanism 6 is provided to stably clamp the cable 4, resisting ship vibration, preventing loosening, wear, and short circuits, improving wiring reliability, and ensuring continuous and stable alarm operation. A covering mechanism 7 is provided to automatically cover and protect the control board 3, preventing salt spray and water vapor intrusion, keeping the interface clean, and improving equipment durability and operational stability. A plug-in mechanism 8 is provided to enable quick locking and disassembly of the main unit housing 2 and the mounting bracket 1, providing shock resistance, anti-loosening, and anti-disassembly safety, making it suitable for use in harsh ship environments.

[0035] The above description shows and illustrates the basic principles, main features, and advantages of the present invention. Standard parts used in the present invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ship positioning alarm system, comprising a mounting bracket (1), the mounting bracket (1) being an integrated structure, and having a main unit housing (2), a solar panel mounting position, and an external speaker assembly (5) mounting position, the three being integrated together. The main unit housing (2) has an IP68 protection rating and an external interface is provided on the main unit housing (2). The main unit housing (2) contains a control board (3), a positioning module, a communication module, a charging management module, and a battery. A solar panel assembly is provided between the mounting bracket (1) and the main unit housing (2). The solar panel assembly stores electricity for the main unit housing (2) through a waterproof charging interface via the charging management module of the main unit housing (2). The main unit housing (2) is equipped with an anti-tamper detection component at the bottom. The anti-tamper detection component is composed of an anti-tamper magnetic block and the housing. The external speaker assembly (5) is connected to the control board (3) via a cable (4), and the cable (4) is plugged into the external interface of the main unit housing (2). In abnormal conditions, the control board (3) drives the sound alarm and simultaneously uploads data to the monitoring platform through the communication module of the main unit housing (2). The front end of the main unit housing (2) is fixedly connected to a fixing mechanism (6). The front and rear sides of the top left end of the main unit housing (2) are fixedly connected to a covering mechanism (7). The bottom right end of the main unit housing (2) is fixedly connected to a plugging mechanism (8). The upper and lower shells of the main unit housing (2) are sealed with a sealing ring. The solar panel assembly adopts a laminated encapsulation structure. The external interface adopts an aviation plug-in waterproof connector. The speaker assembly body has heat resistance, cold resistance, moisture resistance and drop adaptability to meet the needs of long-term outdoor operation. The fixed mechanism (6) is characterized in that: the fixed mechanism (6) includes a mounting shell (61), the front end of the main housing (2) is fixedly connected to the mounting shell (61), the bottom end of the mounting shell (61) is fixedly connected to a limiting plate (62), the top right end of the limiting plate (62) is fixedly connected to a cylinder (63), the bottom push rod of the cylinder (63) is fixedly connected to a gear tooth plate (64), the front end of the gear tooth plate (64) is fixedly connected to a turntable (65) through a gear rod, the upper and lower sides of the front end of the turntable (65) are rotatably connected to one end of a rotating rod (66), and the other end of the rotating rod (66) is rotatably connected to a clamping plate (67).

2. A ship positioning alarm system according to claim 1, wherein: The covering mechanism (7) includes a connecting seat (71). The front and rear sides of the top left end of the main body housing (2) are fixedly connected to the connecting seat (71). A rotating roller (72) is provided between the two sets of connecting seats (71). A torsion spring (73) is fixedly connected at the connection between the rotating roller (72) and the connecting seat (71). A cloth (74) is wrapped around the outer wall of the rotating roller (72). A metal plate (75) is fixedly connected to the right end of the cloth (74). The bottom of the metal plate (75) is slidably connected to the slide groove (76). Sixteen sets of electromagnetic blocks (77) are fixedly connected in the slide groove (76).

3. A ship positioning alarm system according to claim 2, wherein: The insertion mechanism (8) includes a socket plate (81). The socket plate (81) is fixedly connected to the bottom right end of the main housing (2). A micro motor (82) is fixedly connected to the bottom left side of the mounting bracket (1). A gear set (83) is fixedly connected to the top output shaft of the micro motor (82). The gear set (83) consists of two sets of gears meshing left and right. A cam (84) is fixedly connected to the bottom of the right gear of the gear set (83) through a gear rod. The right end of the cam (84) is in contact with the insertion rod (85). A spring (86) is sleeved on the outer wall of the insertion rod (85). A limit block (87) is fixedly connected to the right end of the spring (86).

4. A ship positioning alarm system according to claim 3, wherein: The gear plate component (64) consists of a gear plate and a gear meshing with the gear plate. The back of the gear plate of the gear plate component (64) is slidably connected to the rear end of the inner side of the limiting plate (62), and the back of the gear of the gear plate component (64) is rotatably connected to the rear end of the inner side of the limiting plate (62).

5. A ship positioning alarm system according to claim 4, wherein: The gear tooth plate (64) is fixedly connected to the bottom push rod of the cylinder (63), and the outer wall of the clamping plate (67) is slidably connected to the front end of the limiting plate (62) and the left end of the mounting shell (61).

6. A ship positioning alarm system according to claim 5, wherein: The electromagnetic block (77) is electrically connected to an external current output device, and the electromagnetic block (77) is magnetically attracted to the metal plate (75).

7. A ship positioning alarm system according to claim 6, wherein: The bottom of the limiting block (87) is fixedly connected to the bottom of the mounting bracket (1), and the outer wall of the insertion rod (85) is slidably connected to the limiting block (87).

8. A control method based on a ship positioning alarm system, used to implement the ship positioning alarm system as described in claim 7, characterized in that: Includes the following steps: Step 1: Positioning detection; The positioning module of the main unit housing (2) receives Beidou, GPS, Galileo, GLONASS and QZSS satellite signals to complete the position calculation; Step 2: Installation status detection; Identify whether the host has been illegally disassembled by using the anti-tamper detection component between the mounting bracket (1) and the host housing (2); Step 3: Power supply status detection; The battery voltage, power and solar power status of the main unit housing (2) are collected through the charging management module of the main unit housing (2); Step 4: Protection and installation testing; The control board (3) is covered by the electromagnetic block (77) through the step-by-step power supply, and the electromagnetic block of the anti-tamper detection component is used to lock the system through the plug-in mechanism (8), and the cable (4) is fixed through the fixing mechanism (6). Step 5: Anomaly detection; The control board (3) determines whether the alarm conditions are met based on the location, anti-tampering, power, and distress signal. Step 6: Alarm execution; The control board (3) drives the external speaker assembly (5) to emit an alarm sound, and uploads the data to the monitoring platform through the communication module of the host housing (2); Step 7: Mode switching; switch between high-frequency positioning mode and static power-saving mode according to vibration and motion status to maintain a balance between continuous battery life and real-time performance.

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