Beidou-3 shipborne intelligent terminal

Abstract

This utility model discloses a Beidou-3 shipborne intelligent terminal, belonging to the field of shipborne terminal technology. It solves the problems of insufficient positioning accuracy, limited communication functions, and limited intelligence of traditional shipborne terminal equipment. The terminal includes a circuit integration module, a power battery module, and an external interface module. The external interface module is electrically connected to the circuit integration module, and the circuit integration module is electrically connected to the power battery module. In this utility model, the Beidou-3 shipborne intelligent terminal adopts Beidou PPP-B2b signal processing technology and integrates high-precision positioning, intelligent communication, edge computing, and safety behavior recognition functions through an integrated "sensing-transmission-computing-application" architecture, achieving centimeter-level positioning accuracy. Simultaneously, the terminal incorporates multiple edge computing algorithms, enabling real-time identification of safety hazards on fishing vessels and providing accurate early warnings. Furthermore, it improves the adaptability and communication performance of traditional equipment.

Description

Technical Field

[0001] This utility model belongs to the field of shipborne terminal technology, specifically relating to the Beidou-3 shipborne intelligent terminal. Background Technology

[0002] In recent years, the rapid development of smart ocean technologies and the deepening digital transformation of the marine industry have placed higher demands on the intelligence level of marine equipment. Against this backdrop, application technologies based on the BeiDou Navigation Satellite System have become a key supporting force for promoting the high-quality and high-efficiency development of the marine economy. With its unique advantages such as global coverage, high-precision positioning, and short message communication, the BeiDou Navigation Satellite System provides strong technical support for ship navigation, safety supervision, and emergency search and rescue.

[0003] As the core carrier of ship information and intelligence, the performance of shipborne terminals directly affects the safety of navigation, operational efficiency, and regulatory level. Especially for the large number of fishing vessels operating in complex and ever-changing environments, highly reliable and multifunctional shipborne intelligent terminals are the foundation for achieving safe production supervision, accurate positioning and navigation, and rapid emergency response.

[0004] However, the traditional shipborne terminal equipment currently in widespread use still faces many bottlenecks that urgently need to be addressed in practical applications: 1) Insufficient positioning accuracy: In complex navigation environments such as near sea, ports, and rivers, the accuracy and stability of traditional positioning technologies (such as GPS single-point positioning or Beidou-2 standard services) are insufficient to meet the requirements of refined supervision and emergency rescue.

[0005] 2) Limited communication functionality: Existing shipborne terminal equipment mainly relies on a single communication method. In sea areas far from base station coverage or when communication links are unstable due to severe weather, it is difficult to ensure the real-time and reliable transmission of fishing vessel safety information, which affects the timely response capability of shore-based monitoring centers.

[0006] 3) Limited level of intelligence: It lacks the ability to provide real-time intelligent perception and early warning of ship operation status and personnel safety. Data processing relies heavily on the cloud, and response delays are significant when network conditions at sea are poor.

[0007] To address the above issues, we proposed the BeiDou-3 shipborne intelligent terminal. Utility Model Content

[0008] The purpose of this utility model is to address the shortcomings of existing technologies by providing a Beidou-3 shipborne intelligent terminal, which solves the problems of insufficient positioning accuracy, limited communication functions, and limited intelligence of traditional shipborne terminal equipment.

[0009] This utility model is implemented as follows: a Beidou-3 shipborne intelligent terminal, which includes: a circuit integration module, a power battery pack module, and an external interface module. The external interface module is electrically connected to the circuit integration module, and the circuit integration module is electrically connected to the power battery pack module. The integrated circuit module includes a power management module, a data communication module, a signal processing module, a circuit protection module, and a step-down module. The signal processing module is used to collect data uploaded by the sensor and the positioning module and process the signal through the main control unit MCU. The data communication module uses a 4G communication module to realize remote data transmission through a SIM card interface. The circuit protection module is used to provide self-resetting fuse protection for modules of different voltage levels to prevent circuit failure. The step-down module is electrically connected to the main control unit MCU, the sensor, and the data communication module respectively, and supplies power to the main control unit MCU, the sensor, and the data communication module. The power battery pack module includes a battery protection module and a power battery pack, and the battery protection module and the power battery pack are electrically connected. The external interface module includes a sensor interface, a data upload interface, and an alarm indication interface, and is used to expand the terminal's functionality.

[0010] Preferably, the SIM card interface has a built-in SIM card module. The SIM card module is used to provide network access functionality for the data communication module. The SIM card module communicates with the main control unit MCU through the SIM_CLK interface, SIM_RST interface, and SIM_DATA interface, and transmits data using standard clock signals, reset signals, and data lines.

[0011] Preferably, the 4G communication module implements data communication based on the core chip U2A and communicates with the main control unit MCU through the UART interface 4G_UART_RX / TX to realize data transmission and reception. The 4G communication module also includes a power management pin 4G_PWRKEY and an antenna interface ANT. The power management pin 4G_PWRKEY is used for the switching control of the 4G communication module.

[0012] Preferably, the battery protection module is used for the discharge management of multiple lithium batteries, which together form a power battery pack. The battery protection module independently controls the charging and discharging path of each lithium battery through MOSFETs and a voltage divider resistor network. The battery protection module integrates an output terminal VBAT_OUT, a voltage divider resistor network VBAT_MON, and a filter capacitor. The output terminal VBAT_OUT is used to provide the total voltage of the power battery pack, the voltage divider resistor network VBAT_MON is used to monitor the voltage status of the power battery pack in real time, and the filter capacitor is used to suppress voltage fluctuations and electromagnetic interference.

[0013] Preferably, the power battery module further includes a backup power module, which is powered by a CR1220 button cell battery BT1. The backup power module is used to switch to backup battery power supply through diode D5 when the main power supply VCC_3.3V is interrupted. The backup power module also includes decoupling capacitors C21 and C22, which are used for filtering to stabilize the voltage output.

[0014] Preferably, the external interface module further includes: The positioning module receives positioning data via a UART interface and transmits the positioning data to the main control unit MCU for navigation and monitoring. The recording module collects ambient sound through a microphone, amplifies and automatically adjusts the gain before outputting it to the main control unit MCU for audio processing. The encryption IC module is used to encrypt transmitted and stored data. The encryption IC module is electrically connected to the positioning module and the recording module, and is also connected to the main control unit MCU for communication.

[0015] Preferably, the recording module includes a MAX9814 chip, a microphone interface MIC_CON, a preamplifier circuit, an automatic gain control (AGC), and a MIC_ADC interface. The MAX9814 chip is electrically connected to the microphone interface MIC_CON, the preamplifier circuit, the AGC, and the MIC_ADC interface, respectively. The MAX9814 chip is used for audio signal acquisition and amplification, the microphone interface MIC_CON is used for receiving sound signals, and the preamplifier circuit and the AGC are used for adjusting the intensity of the audio input signal. The output signal of the recording module is transmitted to the main control unit MCU through the MIC_ADC interface.

[0016] Preferably, the positioning module includes a core chip U1, UART interfaces BD_UART_RX and BD_UART_TX, an antenna interface ANT1, and resistors R8 and R10. Resistors R8 and R10 are used for signal matching and are electrically connected to UART interfaces BD_UART_RX and BD_UART_TX, respectively. Resistors R8 and R10 are also electrically connected to the core chip U1. UART interfaces BD_UART_RX and BD_UART_TX are communicatively connected to the main control unit MCU, respectively.

[0017] Preferably, the encryption IC module includes a chip MODB1D-DMCF-R, an I2C interface SCL, an I2C interface SDA, a decoupling capacitor C42, a pull-up resistor R46, and a pull-up resistor R47. The chip MODB1D-DMCF-R integrates the I2C interface SCL and the I2C interface SDA. The decoupling capacitor C42, the pull-up resistor R46, and the pull-up resistor R47 are electrically connected to the chip MODB1D-DMCF-R. The chip MODB1D-DMCF-R communicates with the main control unit MCU through the I2C interface SCL and the I2C interface SDA.

[0018] Preferably, the Beidou-3 shipborne intelligent terminal further includes: The three-axis attitude sensor module is used to acquire three-axis acceleration data in real time and communicates with the main control unit (MCU). The three-axis attitude sensor module includes a LIS3DH sensor, an I2C interface SCL, and an I2C interface SDA. The LIS3DH sensor is electrically connected to the I2C interface SCL and the I2C interface SDA, respectively, and the three-axis attitude sensor module communicates with the main control unit (MCU) through the I2C interface SCL and the I2C interface SDA.

[0019] Compared with the prior art, the embodiments of this application have the following main advantages: In this invention, the Beidou-3 shipborne intelligent terminal adopts Beidou PPP-B2b signal processing technology and integrates high-precision positioning, intelligent communication, edge computing, and safety behavior recognition functions through an integrated "sensing-transmission-computing-application" architecture. This achieves centimeter-level positioning accuracy and demonstrates excellent stability and precision in complex navigation environments such as nearshore waters and rivers. Simultaneously, the terminal incorporates multiple edge computing algorithms, enabling real-time identification of safety hazards on fishing vessels and providing precise early warnings. This offers a novel technical solution for fisheries safety production management and enhances the adaptability and communication performance of traditional equipment, ensuring efficient digital management and intelligent operation in practical applications.

[0020] In this invention, the Beidou-3 shipborne intelligent terminal adopts a lithium battery power supply design, avoiding the need for drilling into the equipment cabin as required by traditional charging ports. Compared to traditional waterproof charging interfaces, the lithium battery power supply design significantly improves the sealing of the equipment cabin, effectively preventing the intrusion of seawater, humid air, and salt spray, thereby enhancing the durability and lifespan of the terminal equipment in complex marine environments. Simultaneously, the Beidou-3 shipborne intelligent terminal is also equipped with an intelligent battery protection module. This module provides multiple safety functions for the built-in power battery pack, including overcharge detection, over-discharge detection, overcurrent detection, equalization charging, and high / low temperature protection, while also featuring disconnection detection and adaptive adjustment. Through real-time monitoring and intelligent management of the power battery pack's charging and discharging process, the battery protection module provides a safe and stable power supply environment for the equipment, significantly extending the overall battery lifespan and ensuring the reliability and stability of the equipment during long-term operation. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of the Beidou-3 shipborne intelligent terminal provided by this utility model.

[0022] Figure 2 A schematic diagram of the circuit structure of the step-down module is shown.

[0023] Figure 3 A schematic diagram of the circuit structure of the SIM card module is shown.

[0024] Figure 4 A schematic diagram of the circuit structure of a 4G communication module is shown.

[0025] Figure 5 A schematic diagram of the circuit structure of the battery protection module is shown.

[0026] Figure 6 A schematic diagram of the circuit structure of the backup power module is shown.

[0027] Figure 7 A schematic diagram of the circuit structure of the recording module is shown.

[0028] Figure 8 A schematic diagram of the circuit structure of the positioning module is shown.

[0029] Figure 9 A schematic diagram of the circuit structure of the encryption IC module is shown.

[0030] Figure 10 A schematic diagram of the circuit structure of the three-axis attitude sensor module is shown.

[0031] In the diagram: 110-Circuit Integration Module, 111-Power Management Module, 112-Data Communication Module, 113-Signal Processing Module, 114-Circuit Protection Module, 115-Step-Down Module, 120-Power Battery Pack Module, 121-Power Battery Pack, 122-Battery Protection Module, 123-Backup Power Supply Module, 130-External Interface Module, 131-Positioning Module, 132-Recording Module, 133-Encryption IC Module, 140-Three-Axis Attitude Measurement Module. Detailed Implementation

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0033] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] Traditional shipborne terminal equipment suffers from insufficient positioning accuracy, limited communication functions, and limited intelligence. To address these issues, we propose a BeiDou-3 shipborne intelligent terminal. This terminal comprises a circuit integration module 110, a power battery module 120, and an external interface module 130. The external interface module 130 is electrically connected to the circuit integration module 110, and the circuit integration module 110 is electrically connected to the power battery module 120. This BeiDou-3 shipborne intelligent terminal utilizes BeiDou PPP-B2b signal processing technology and integrates high-precision positioning, intelligent communication, edge computing, and safety behavior recognition functions through a unified "sensing-transmission-computing-application" architecture. This achieves centimeter-level positioning accuracy and demonstrates excellent stability and precision in complex navigation environments such as nearshore waters and rivers. Furthermore, the terminal incorporates multiple edge computing algorithms, enabling real-time identification of safety hazards on fishing vessels and providing precise early warnings. This provides a novel technical solution for fisheries safety production management and enhances the adaptability and communication performance of traditional equipment, ensuring efficient digital management and intelligent operation in practical applications.

[0035] This utility model embodiment provides a Beidou-3 shipborne intelligent terminal, such as... Figure 1 As shown, the shipborne intelligent terminal based on Beidou-3 includes: a circuit integration module 110, a power battery pack module 120, and an external interface module 130. The external interface module 130 is electrically connected to the circuit integration module 110, and the circuit integration module 110 is electrically connected to the power battery pack module 120. The circuit integration module 110 includes a power management module 111, a data communication module 112, a signal processing module 113, a circuit protection module 114, and a step-down module 115. The signal processing module 113 collects data uploaded by the sensor and positioning module 131 and processes the signals through the main control unit (MCU). The data communication module 112 uses a 4G communication module to remotely transmit data via a SIM card interface. The circuit protection module 114 provides self-resetting fuse protection for modules of different voltage levels to prevent circuit failures. The step-down module 115 is connected to the main control unit... The MCU, sensor, and data communication module 112 are electrically connected and supply power to the main control unit MCU, sensor, and data communication module 112. In this embodiment, the power management module 111 ensures ultra-low power consumption of the Beidou-3 shipborne intelligent terminal. Furthermore, the power management module 111 employs efficient power management technology, which extends the terminal's runtime, supports long-term offline operation, and meets the continuous use requirements of fishing vessels in harsh marine environments. The function of the power management module 111 is to coordinate the distribution, conversion, and protection of electrical energy, ensuring stable operation of all modules of the device, while extending battery life and improving system reliability. The power management module 111 features buck / boost regulation, multi-voltage rail management, balanced charging, and low-power standby functions. The power battery module 120 includes a battery protection module 122 and a power battery pack 121, which are electrically connected. The external interface module 130 includes a sensor interface, a data upload interface, and an alarm indication interface. The external interface module 130 is used to expand the terminal's functions.

[0036] In this invention, the Beidou-3 shipborne intelligent terminal adopts Beidou PPP-B2b signal processing technology and integrates high-precision positioning, intelligent communication, edge computing, and safety behavior recognition functions through an integrated "sensing-transmission-computing-application" architecture. This achieves centimeter-level positioning accuracy and demonstrates excellent stability and precision in complex navigation environments such as nearshore waters and rivers. Simultaneously, the terminal incorporates multiple edge computing algorithms, enabling real-time identification of safety hazards on fishing vessels and providing precise early warnings. This offers a novel technical solution for fisheries safety production management and enhances the adaptability and communication performance of traditional equipment, ensuring efficient digital management and intelligent operation in practical applications.

[0037] In a further preferred embodiment of this utility model, such as Figure 3 As shown, the SIM card interface has a built-in SIM card module. This module provides network access for the data communication module 112. The SIM card module communicates with the main control unit (MCU) via the SIM_CLK, SIM_RST, and SIM_DATA interfaces, using standard clock signals, reset signals, and data lines to transmit data. Simultaneously, the SIM card module employs power decoupling capacitors C24 and C25 and protection diodes IOT_E3 and IOT_E5 to ensure signal integrity and anti-interference capabilities, while also preventing damage to the circuit from overvoltage and surges. The module's power supply voltage, SIM_VDD, is provided by a voltage regulator circuit and filtered to maintain power stability. The SIM card module is designed to be compatible with conventional SIM card standards, possessing high reliability and stability, and is suitable for data communication and remote networking applications.

[0038] In this embodiment, as Figure 4 As shown, the 4G communication module implements data communication based on the core chip U2A and communicates with the main control unit MCU through the UART interface 4G_UART_RX / TX to realize data transmission and reception. The 4G communication module also includes a power management pin 4G_PWRKEY and an antenna interface ANT. The power management pin 4G_PWRKEY is used for the switching control of the 4G communication module. Figure 3 Data communication is achieved through the core chip (U2A), supporting SIM card interfaces (SIM_VDD, SIM_RST, SIM_CLK, SIM_DATA) and network access functions. The 4G communication module communicates with the main control unit MCU via the UART interface 4G_UART_RX / TX to achieve data transmission and reception. The external power supply VDD_4G is equipped with filtering and ESD protection circuits to ensure stability and anti-interference capabilities, and is also equipped with a power management pin 4G_PWRKEY for module switching control. The module's antenna interface ANT ensures signal transmission quality, and the overall circuit meets the high-speed data transmission requirements of 4G communication. Based on the 4G communication module and SIM card module, the terminal can support high-precision positioning and environmental data monitoring technology during emergency rescue operations, enabling rapid location and feedback of on-site information in emergencies (such as shipwrecks or falls into the water), providing alarm functions, supporting precise rescue, and integrating digital voice, high-throughput satellite broadband, and 4G communication functions to support all-weather remote communication and data transmission, ensuring real-time feedback of fishing vessel safety information.

[0039] In a further preferred embodiment of this utility model, such as Figure 5As shown, the battery protection module 122 is used for the discharge management of multiple lithium batteries. The multiple lithium batteries form a power battery pack 121. The battery protection module 122 independently controls the charging and discharging path of each lithium battery through MOSFETs and a voltage divider resistor network. The battery protection module 122 integrates an output terminal VBAT_OUT, a voltage divider resistor network VBAT_MON, and a filter capacitor. The output terminal VBAT_OUT is used to provide the total voltage to the power battery pack 121. The voltage divider resistor network VBAT_MON is used to monitor the voltage status of the power battery pack 121 in real time. The filter capacitor is used to suppress voltage fluctuations and electromagnetic interference.

[0040] It should be noted that, since the circuit board integrates multiple step-down modules 115 and other functional modules, the voltage and current values ​​provided by different modules are different. According to the voltage level of different modules, self-resetting fuses will be added between modules with different voltage levels to prevent the current in the circuit from exceeding the rated current of the self-resetting fuse. The self-resetting fuse will quickly cut off the circuit and stop the current flow, thereby cutting off the connection between modules and preventing further damage to the circuit.

[0041] In this embodiment, the battery protection module 122 is designed for the discharge management of multiple lithium batteries. It independently controls the charging and discharging path of each battery through MOSFETs and a voltage divider resistor network. The MOSFETs can be AO3401A, ensuring the safe operation of the power battery pack 121. Each lithium battery implements multiple safety functions such as overcurrent protection, overvoltage protection, and over-discharge protection through an independent MOSFET, preventing damage to a single battery due to overcharging or discharging. The output terminal VBAT_OUT of the battery protection module 122 provides the total voltage of the battery pack and monitors the voltage status of the battery pack in real time through the voltage divider resistor network VBAT_MON, providing a safe and stable input voltage for the subsequent power management module 111. The battery protection module 122 is also equipped with filter capacitors C43-C53, which effectively suppress voltage fluctuations and electromagnetic interference, further improving the stability and reliability of the circuit. Furthermore, the battery protection module 122 has a compact structure and efficient battery protection functions, providing strong protection for the overall power supply safety and battery pack lifespan.

[0042] In this embodiment, the Beidou-3 shipborne intelligent terminal adopts a lithium battery power supply design, avoiding the need for drilling into the equipment cabin as required by traditional charging ports. Compared to traditional waterproof charging interfaces, the lithium battery power supply design significantly improves the sealing of the equipment cabin, effectively preventing the intrusion of seawater, humid air, and salt spray, thereby enhancing the durability and lifespan of the terminal equipment in complex marine environments. Simultaneously, the Beidou-3 shipborne intelligent terminal is also equipped with an intelligent battery protection module 122. This module provides multiple safety functions for the built-in power battery pack 121, including overcharge detection, over-discharge detection, overcurrent detection, equalization charging, and high / low temperature protection. It also features disconnection detection and adaptive adjustment functions. Through real-time monitoring and intelligent management of the charging and discharging process of the power battery pack 121, the battery protection module 122 provides a safe and stable power supply environment for the equipment, significantly extending the overall battery lifespan and ensuring the reliability and stability of the equipment during long-term operation.

[0043] Meanwhile, the Beidou-3 shipborne intelligent terminal improves system integration by optimizing its internal space layout. The circuit integration module 110 centrally integrates functions such as lithium battery input, step-down module 115, voltage output module, circuit protection module 114, and power management module 111, forming a highly integrated power supply and distribution system. By rationally allocating the step-down circuit output, it powers devices such as the data communication module 112 and sensor modules with different voltage requirements, while significantly reducing the number of cables inside the cabin. This design not only saves cabin space but also reduces the possibility of cable tangling and malfunctions, improving equipment maintainability and installation convenience.

[0044] In a further preferred embodiment of this utility model, such as Figure 6 As shown, the power battery module 120 also includes a backup power module 123. The backup power module 123 is powered by a CR1220 button cell battery BT1. When the main power supply VCC_3.3V is interrupted, the backup power module 123 switches to backup battery power supply through diode D5 to ensure that the VBAT_IN terminal continues to provide power. Diode D5 can be a BAT54C. The backup power module 123 also includes decoupling capacitors C21 and C22 (100pF and 10uF). The decoupling capacitors C21 and C22 are used for filtering to stabilize the voltage output and prevent power fluctuations from affecting the operation of key functional modules. The backup power module 123 is also communicatively connected to the power management module 111. The backup power module 123 is suitable for scenarios such as data storage and low-power standby of the system to ensure the reliability and stability of the system in the event of a power outage.

[0045] In this embodiment, the BeiDou-3 shipborne intelligent terminal adopts an enhanced modular design, separating the positioning, communication, power supply, and algorithm modules. This allows the terminal to be flexibly expanded and its functions adjusted according to actual needs. The modular design not only improves the maintainability and development efficiency of the terminal system but also provides a foundation for future upgrades and expansions, effectively meeting the diverse needs of smart ocean applications.

[0046] In a further preferred embodiment of this utility model, such as Figure 1 As shown, the external interface module 130 further includes: The positioning module 131 receives positioning data through the UART interface and transmits the positioning data to the main control unit MCU for navigation and monitoring. like Figure 8 As shown, the positioning module 131 includes a core chip U1, UART interfaces BD_UART_RX and BD_UART_TX, an antenna interface ANT1, and resistors R8 and R10. Resistors R8 and R10 are used for signal matching and are electrically connected to UART interfaces BD_UART_RX and BD_UART_TX, respectively. Resistors R8 and R10 are also electrically connected to the core chip U1. UART interfaces BD_UART_RX and BD_UART_TX are communicatively connected to the main control unit (MCU). In this embodiment, the positioning module 131 supports multiple data transmission methods such as I2C and SPI. The positioning module 131 can receive a stable 3.3V power supply (GPS_VCC) and receive satellite signals through the antenna interface ANT1, providing high-precision positioning information. Capacitors C3 and C4 are used for decoupling filtering, and resistors R8 and R10 are used for signal matching to ensure stable signal transmission. The module is suitable for navigation and positioning applications and meets the requirements of high precision and low power consumption. In this embodiment, the high-precision BeiDou positioning technology of the positioning module 131 is based on the BeiDou-3 PPP-B2b signal processing technology, achieving centimeter-level positioning accuracy (horizontal error ≤ 0.3 meters, elevation error ≤ 0.6 meters), which is particularly suitable for complex nearshore, port, and river environments. Furthermore, the terminal's built-in intelligent recognition algorithm for fishing vessel safety behavior and emergency alarm function can monitor the fishing vessel's operating status in real time (such as yaw, overspeed, falling overboard, etc.) and quickly feed back on-site information, providing precise response support for emergencies and significantly improving emergency rescue efficiency.

[0047] The recording module 132 collects ambient sound through a microphone, amplifies and automatically adjusts the gain before outputting it to the main control unit MCU for audio processing. like Figure 7As shown, the recording module 132 includes a MAX9814 chip, a microphone interface MIC_CON, a preamplifier circuit, an automatic gain control (AGC) circuit, and a MIC_ADC interface. The MAX9814 chip is electrically connected to the microphone interface MIC_CON, the preamplifier circuit, the AGC circuit, and the MIC_ADC interface. The MAX9814 chip is used for audio signal acquisition and amplification, the microphone interface MIC_CON is used to receive sound signals, and the preamplifier circuit and AGC circuit are used to adjust the intensity of the audio input signal. The output signal of the recording module 132 is transmitted to the main control unit (MCU) through the MIC_ADC interface. The recording module 132 realizes audio signal acquisition and amplification based on the MAX9814 chip. It receives sound signals through the microphone interface MIC_CON and adjusts the intensity of the audio input signal through the preamplifier circuit and the AGC circuit to ensure the quality and stability of the audio signal. The automatic gain control function inside the MAX9814 chip supports dynamic gain adjustment to adapt to different audio input environments. The output signal of the recording module 132 is transmitted to the subsequent processing unit through the MIC_ADC interface for digital processing, used for speech recognition or environmental sound monitoring. The module is powered by a stable 3.3V voltage VCC_MIC and is equipped with multiple filter capacitors C26 and C27 to eliminate high-frequency interference in the circuit and ensure clear and reliable recording quality.

[0048] The encryption IC module 133 is used to encrypt the transmitted and stored data. The encryption IC module 133 is electrically connected to the positioning module 131 and the recording module 132, and is also connected to the main control unit MCU for communication.

[0049] like Figure 9 As shown, the encryption IC module 133 includes a chip MODB1D-DMCF-R, an I2C interface SCL, an I2C interface SDA, a decoupling capacitor C42, a pull-up resistor R46, and a pull-up resistor R47. The chip MODB1D-DMCF-R integrates the I2C interface SCL and the I2C interface SDA. The decoupling capacitor C42, pull-up resistor R46, and pull-up resistor R47 are electrically connected to the chip MODB1D-DMCF-R. The chip MODB1D-DMCF-R communicates with the main control unit MCU through the I2C interface SCL and the I2C interface SDA, thereby realizing data encryption and decryption functions. The encryption IC module 133 is powered by 3.3V and equipped with decoupling capacitor C42 and pull-up resistors R46 and R47 to ensure stable power supply and reliable communication. Its main functions include data encryption protection, anti-tampering, device authentication, and anti-counterfeiting verification, making it suitable for scenarios with high security requirements and effectively ensuring the security of device data transmission and storage.

[0050] In a further preferred embodiment of this utility model, such as Figure 10 As shown, the Beidou-3 shipborne intelligent terminal also includes: A three-axis attitude sensor module 140 is used to acquire three-axis acceleration data in real time and communicates with the main control unit (MCU). The three-axis attitude sensor module 140 includes a LIS3DH sensor, an I2C interface SCL, and an I2C interface SDA. The LIS3DH sensor is electrically connected to both I2C interfaces SCL and SDA. The three-axis attitude sensor module 140 communicates with the MCU through the I2C interfaces SCL and SDA. The three-axis attitude sensor module 140 uses the LIS3DH sensor as its core to acquire three-axis acceleration data. The three-axis attitude sensor module 140 also integrates VDD_IO, which provides the sensor's operating voltage and is filtered by capacitors C40 and C41 for stable power supply. The three-axis attitude sensor module 140 supports two interrupt outputs (LIS_INT1 and LIS_INT2), which can be used to trigger responses to specific events, such as motion detection or attitude changes. In addition, it integrates a high-precision ADC channel, which can collect and transmit acceleration information in real time, providing data support for navigation, attitude monitoring and motion analysis.

[0051] In this embodiment, as Figure 2 As shown, the step-down module 115 uses the high-efficiency step-down chip TPS63070, and performs voltage conversion and filtering through inductor L2 and external capacitors and RC networks. The input voltage of the step-down module 115 is VBAT_OUT. After step-down processing, it outputs a stable 3.3V voltage (VCC_3.3V) to power low-voltage devices in the terminal, such as the central control unit MCU, sensors, and data communication module 112. Furthermore, the step-down module 115 has overcurrent protection and stability control functions to ensure normal operation of the equipment within a variety of input voltage ranges.

[0052] It should be noted that the internal PCB design of the Beidou-3 shipborne intelligent terminal is optimized, employing perforations and internal copper plating for heat dissipation. Additionally, heat sinks are added to areas with high current flow, effectively improving the circuit board's heat dissipation performance. This design reduces the risk of overheating during high-power operation, significantly improving the equipment's safety and stability, and ensuring the reliability of the shipborne terminal during prolonged high-load operation.

[0053] In summary, this utility model provides a BeiDou-3 shipborne intelligent terminal. This terminal utilizes BeiDou PPP-B2b signal processing technology and integrates high-precision positioning, intelligent communication, edge computing, and safety behavior recognition functions through a unified "sensing-transmission-computing-application" architecture. This achieves centimeter-level positioning accuracy and demonstrates excellent stability and precision in complex navigation environments such as nearshore waters and rivers. Furthermore, the terminal incorporates multiple edge computing algorithms, enabling real-time identification of safety hazards on fishing vessels and providing precise early warnings. This provides a novel technical solution for fisheries safety production management and enhances the adaptability and communication performance of traditional equipment, ensuring efficient digital management and intelligent operation in practical applications.

[0054] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0055] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A Beidou-3 shipborne intelligent terminal, characterized in that: The Beidou-3 shipborne intelligent terminal includes: a circuit integration module, a power battery pack module, and an external interface module. The external interface module is electrically connected to the circuit integration module, and the circuit integration module is electrically connected to the power battery pack module. The integrated circuit module includes a power management module, a data communication module, a signal processing module, a circuit protection module, and a step-down module. The signal processing module is used to collect data uploaded by the sensor and the positioning module and process the signal through the main control unit MCU. The data communication module uses a 4G communication module to realize remote data transmission through a SIM card interface. The circuit protection module is used to provide self-resetting fuse protection for modules of different voltage levels to prevent circuit failure. The step-down module is electrically connected to the main control unit MCU, the sensor, and the data communication module respectively, and supplies power to the main control unit MCU, the sensor, and the data communication module. The power battery pack module includes a battery protection module and a power battery pack, and the battery protection module and the power battery pack are electrically connected. The external interface module includes a sensor interface, a data upload interface, and an alarm indication interface, and is used to expand the terminal's functionality.

2. The Beidou-3 shipborne intelligent terminal as described in claim 1, characterized in that: The SIM card interface has a built-in SIM card module, which provides network access functionality for the data communication module. The SIM card module communicates with the main control unit MCU through the SIM_CLK interface, SIM_RST interface, and SIM_DATA interface, and transmits data using standard clock signals, reset signals, and data lines.

3. The Beidou-3 shipborne intelligent terminal as described in claim 2, characterized in that: The 4G communication module realizes data communication based on the core chip U2A and communicates with the main control unit MCU through the UART interface 4G_UART_RX / TX to realize data transmission and reception. The 4G communication module also includes a power management pin 4G_PWRKEY and an antenna interface ANT. The power management pin 4G_PWRKEY is used for the switching control of the 4G communication module.

4. The Beidou-3 shipborne intelligent terminal as described in claim 2, characterized in that: The battery protection module is used for the discharge management of multiple lithium batteries, which together form a power battery pack. The battery protection module independently controls the charging and discharging path of each lithium battery through MOSFETs and a voltage divider resistor network. The battery protection module integrates an output terminal VBAT_OUT, a voltage divider resistor network VBAT_MON, and a filter capacitor. The output terminal VBAT_OUT is used to provide the total voltage of the power battery pack, the voltage divider resistor network VBAT_MON is used to monitor the voltage status of the power battery pack in real time, and the filter capacitor is used to suppress voltage fluctuations and electromagnetic interference.

5. The Beidou-3 shipborne intelligent terminal as described in claim 4, characterized in that: The power battery module also includes a backup power module, which is powered by a CR1220 button cell battery BT1. The backup power module is used to switch to backup battery power supply through diode D5 when the main power supply VCC_3.3V is interrupted. The backup power module also includes decoupling capacitors C21 and C22, which are used for filtering to stabilize the voltage output.

6. The Beidou-3 shipborne intelligent terminal as described in claim 1, characterized in that: The external interface module also includes: The positioning module receives positioning data via a UART interface and transmits the positioning data to the main control unit MCU for navigation and monitoring. The recording module collects ambient sound through a microphone, amplifies and automatically adjusts the gain before outputting it to the main control unit MCU for audio processing. The encryption IC module is used to encrypt transmitted and stored data. The encryption IC module is electrically connected to the positioning module and the recording module, and is also connected to the main control unit MCU for communication.

7. The Beidou-3 shipborne intelligent terminal as described in claim 6, characterized in that: The recording module includes a MAX9814 chip, a microphone interface MIC_CON, a preamplifier circuit, an automatic gain control (AGC), and a MIC_ADC interface. The MAX9814 chip is electrically connected to the microphone interface MIC_CON, the preamplifier circuit, the AGC, and the MIC_ADC interface. The MAX9814 chip is used for audio signal acquisition and amplification, the microphone interface MIC_CON is used to receive sound signals, and the preamplifier circuit and AGC are used to adjust the intensity of the audio input signal. The output signal of the recording module is transmitted to the main control unit MCU through the MIC_ADC interface.

8. The Beidou-3 shipborne intelligent terminal as described in claim 6, characterized in that: The positioning module includes a core chip U1, UART interfaces BD_UART_RX and BD_UART_TX, an antenna interface ANT1, and resistors R8 and R10. Resistors R8 and R10 are used for signal matching and are electrically connected to UART interfaces BD_UART_RX and BD_UART_TX, respectively. Resistors R8 and R10 are also electrically connected to the core chip U1. UART interfaces BD_UART_RX and BD_UART_TX are respectively connected to the main control unit MCU for communication.

9. The Beidou-3 shipborne intelligent terminal as described in claim 7, characterized in that: The encryption IC module includes a chip MODB1D-DMCF-R, an I2C interface SCL, an I2C interface SDA, a decoupling capacitor C42, a pull-up resistor R46, and a pull-up resistor R47. The chip MODB1D-DMCF-R integrates the I2C interface SCL and the I2C interface SDA. The decoupling capacitor C42, the pull-up resistor R46, and the pull-up resistor R47 are electrically connected to the chip MODB1D-DMCF-R. The chip MODB1D-DMCF-R communicates with the main control unit MCU through the I2C interface SCL and the I2C interface SDA.

10. The Beidou-3 shipborne intelligent terminal as described in claim 8, characterized in that: Also includes: The three-axis attitude sensor module is used to acquire three-axis acceleration data in real time and communicates with the main control unit (MCU). The three-axis attitude sensor module includes a LIS3DH sensor, an I2C interface SCL, and an I2C interface SDA. The LIS3DH sensor is electrically connected to the I2C interface SCL and the I2C interface SDA, respectively, and the three-axis attitude sensor module communicates with the main control unit (MCU) through the I2C interface SCL and the I2C interface SDA.

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