Remote control Beidou AIS dual-mode beacon forwarding method and system

Abstract

The invention discloses a remote control Beidou AIS dual-mode forwarding beacon method and system, and the method comprises the steps: receiving a weak downlink signal through a Beidou receiving and transmitting antenna, and outputting the weak downlink signal to a radio frequency chip after the weak downlink signal is amplified and filtered through an S, B3, B1 and B2b frequency band radio frequency switch and a low-noise amplifier of the radio frequency chip; when communication is carried out, the baseband chip generates a corresponding telegraph text according to needs, carries out spectrum spreading on the telegraph text and sends the telegraph text to the radio frequency chip in the form of a baseband signal, the radio frequency chip modulates baseband information to a transmitting carrier wave, amplifies the transmitting signal, and transmits the transmitting signal to the Beidou receiving and transmitting antenna through the power amplifier and the radio frequency switch to be transmitted out; therefore, the remote control Beidou AIS dual-mode forwarding mark can be carried by a person who moves on the water surface, can also be installed on an airplane and a ship for use, can be automatically triggered to send out Beidou and AIS alarm signals when the forwarding mark is in danger and falls into water, can also collect nearby AIS information and forward the AIS information to a receiving station through a Beidou short message, and provides safety guarantee.

Description

Technical Field

[0001] The invention belongs to the technical field of satellite navigation applications, and in particular relates to a method and system for remotely controlling a Beidou AIS dual-mode forwarding beacon. Background Art

[0002] In recent years, with the development and transformation of the transportation industry, transportation equipment has gradually developed in the direction of large-scale, intelligent and high-speed. For the entire transportation industry, the increasingly complex environment, including the natural environment and various sudden man-made events, has made people realize the importance of establishing good communication with transportation equipment and dynamic monitoring and positioning.

[0003] In some areas without network coverage, transport equipment is usually unable to communicate with the dispatching command center in time, and the dispatching center cannot grasp the current status of the transport equipment in time. When an unexpected situation occurs, it cannot get timely rescue, which may cause major safety accidents. It is necessary to propose a remote control Beidou AIS dual-mode forwarding method and system, which uses the existing satellite navigation system to realize the positioning and communication of transport equipment, which can not only obtain high-precision positioning information in real time, but also realize management functions through interactive communication. Summary of the invention

[0004] The present invention provides a method and system for remotely controlling a Beidou AIS dual-mode forwarding beacon, aiming to solve the problems existing in the prior art.

[0005] To solve the above problems, the technical solution provided by the present invention is as follows:

[0006] The embodiment of the present invention provides a method for remotely controlling a Beidou AIS dual-mode forwarding beacon, which comprises the following steps:

[0007] Step 1, Beidou satellite broadcasts S, B3, B1, B2b frequency band downlink signals, Beidou transceiver antenna receives weak downlink signals, and outputs them to the RF chip after amplification and filtering by the S, B3, B1, B2b frequency band RF switch and low noise amplifier of the RF chip; the RF chip amplifies, filters, down-converts and samples the downlink signals, and outputs digital intermediate frequency signals to the baseband chip. The baseband chip includes independent receiving signal channels, demodulates, despreads and analyzes the quantized digital intermediate frequency signals, and outputs the processing results through the serial interface;

[0008] Step 2: Signals need to be transmitted outward. When communicating, the baseband chip generates corresponding telegrams as needed, spreads the telegrams and sends them to the RF chip in the form of baseband signals. The RF chip modulates the baseband information to the transmitting carrier, amplifies the transmitting signal, and transmits it to the Beidou transceiver antenna through the power amplifier and RF switch for transmission.

[0009] According to an optional embodiment of the present invention, step 2 includes: step 21, when the magnetic interface of the forwarding tag is not attracted by the magnet, the water contact of the forwarding tag is immersed in water, or the switch button is pressed to make the forwarding tag enter the working mode; after the forwarding tag enters the working mode, three high-brightness strobe lights start working synchronously, with a flashing frequency of 30 times / min, and at the same time, the red LED light starts flashing, with a flashing frequency of 40 times / min, and the red LED indicator stops flashing after the forwarding tag is positioned; the forwarding tag starts working 1 minute after power-on, and the green LED indicator starts flashing 30 times / min, flashing at an interval of 1s with the high-brightness strobe light, and starts forwarding the AIS distress information to the target ID; when the forwarding tag fails to operate, the red LED indicator flashes quickly, with a flashing frequency of 120 times / min.

[0010] According to an optional embodiment of the present invention, step 2 includes: step 22, when the forwarding tag is working, the AIS receiving module continues to work, and the forwarding period of the distress information is set to 10 minutes, wherein the Beidou core board and the radio frequency box module work for 1 minute every 10 minutes, and the relevant modules need to be powered for 1 minute before forwarding the distress information, update the location information and forward the distress information regularly, and then sleep for 9 minutes, which is a normal working cycle; the forwarding tag automatically turns off the power of the Bluetooth module 10 minutes after being powered on. If the forwarding tag parameter information needs to be configured through the Bluetooth connection, the Bluetooth module can be made to work by restarting the power of the forwarding tag. The Bluetooth module will not be powered off during pairing and connection, and the Bluetooth module will automatically power off after the parameter configuration is completed.

[0011] The embodiment of the present invention provides a remote control Beidou AIS dual-mode forwarding beacon system, which is used to implement a remote control Beidou AIS dual-mode forwarding beacon method as described in the above embodiment, wherein the system includes an antenna unit, a radio frequency front-end module processing board, a core data processing board, a power processing board and a battery pack;

[0012] The antenna unit includes a Beidou transceiver antenna, which is used to receive and transmit Beidou third-generation radio frequency signals. The outbound signal broadcast by the Beidou satellite first reaches the antenna of the forwarding host, and the collected weak signal is processed and sent to the receiving signal channel. The signal of the forwarding host transmission channel is processed by the Beidou transceiver antenna and transmitted to the satellite;

[0013] The RF front-end module processing board is used to perform low-noise amplification on the weak signal received by the antenna, provide a pure in-band signal for back-end signal processing, and filter out interference signals; perform power amplification on the RF signal carrying information, and provide a signal with sufficient power for satellite reception;

[0014] The core data processing board includes a Beidou core unit, which has a radio frequency chip and a baseband chip. The radio frequency chip is used to complete the signal amplification, down-conversion, filtering, and analog-to-digital conversion of the radio frequency signal processed by the low noise amplifier to the digital signal processed by the baseband; the baseband chip is used to complete the analysis and processing of the digital signal output by the radio frequency chip, and complete the communication information extraction, solution, processing and operation output Beidou information;

[0015] The power processing board is used to realize the power supply management function of the forwarding tag, and performs corresponding power output management operations by detecting the water contact point or button status;

[0016] The battery pack is used to provide working power for the antenna unit, the RF front-end module processing board, the core data processing board and the power processing board. The battery pack can report data information such as power through the communication interface to provide parameters for the forwarding tag system master control.

[0017] According to an optional embodiment of the present invention, the antenna unit further includes an AIS antenna, and the AIS antenna is used to receive signals in the AIS frequency band and process the collected weak signals and send them to the receiving signal channel.

[0018] According to an optional embodiment of the present invention, the RF front-end module processing board includes a power amplifier unit, a low noise amplifier unit, a switch unit and an indicator light unit; the indicator light unit is composed of a high-brightness indicator light and a designed circuit, and is used to indicate the working status of the forwarding tag.

[0019] According to an optional embodiment of the present invention, the core data processing board further includes a data processing unit, an RS232 serial port module, a DC / DC module, an LDO module, a water switch, a magnetic switch and an IC card;

[0020] The data processing module is used to perform protocol processing on the data of each module, monitor the power information and power supply status of the battery pack, control the indicator light unit to display the operating status of the equipment, and perform interactive control functions for external interactive processing of data information; the RS232 serial port module includes physical buttons, water contacts, magnetic suction interfaces and external data interfaces, providing necessary interface units for the work and testing of the forwarding tag.

[0021] According to an optional embodiment of the present invention, the power processing board includes a battery processing module, an AIS module, a Bluetooth module and an external interface data power interface. The AIS module is used to automatically receive AIS information, and send it to the forwarding beacon system main control for analysis through the data processing unit and the RS232 serial port module, and send distress information; the Bluetooth module is used to realize the Beidou AIS forwarding beacon data wireless transparent transmission function, and realize data interaction with the mobile terminal.

[0022] Compared with the prior art, the embodiments of the present invention provide a method and system for remotely controlling a Beidou AIS dual-mode forwarding beacon, which has the following beneficial effects: the remotely controlled Beidou AIS dual-mode forwarding beacon can be carried by personnel on the water surface, and can also be installed on aircraft and ships for use. When a person falls into the water in distress, the forwarding beacon can automatically trigger the issuance of Beidou and AIS alarm signals, and can also collect nearby AIS information and forward it to a receiving site through Beidou short messages, thereby providing safety protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A flowchart of a method for remotely controlling a Beidou AIS dual-mode forwarding beacon is provided for an embodiment of the present application.

[0025] Figure 2 A schematic diagram of a remotely controlled Beidou AIS dual-mode forwarding beacon system is provided for an embodiment of the present application.

[0026] Figure 3 A principle design diagram of a remote-controlled Beidou AIS dual-mode forwarding beacon system is provided for an embodiment of the present application.

[0027] Figure 4 and Figure 5 A schematic diagram of the radio frequency channel principle of a remotely controlled Beidou AIS dual-mode forwarding beacon system is provided for an embodiment of the present application.

[0028] Figure 6 A schematic diagram of the principle of a radio frequency front-end processing board for a remotely controlled Beidou AIS dual-mode forwarding beacon system is provided for an embodiment of the present application.

[0029] Figure 7 A schematic diagram of the low noise amplification principle of a remotely controlled Beidou AIS dual-mode forwarding beacon system is provided for an embodiment of the present application.

[0030] Figure 8 A schematic diagram of the core data processing board of a remotely controlled Beidou AIS dual-mode forwarding beacon system is provided for an embodiment of the present application.

[0031] Fig. 9 A schematic diagram of the composition of a data processing module for a remotely controlled Beidou AIS dual-mode forwarding beacon system is provided for an embodiment of the present application.

[0032] Fig.10A block diagram of a power processing board for a remotely controlled Beidou AIS dual-mode forwarding beacon system is provided for an embodiment of the present application.

[0033] Fig.11 A schematic diagram of the design of a power management module for a remotely controlled Beidou AIS dual-mode forwarding beacon system is provided for an embodiment of the present application.

[0034] Fig.12 A schematic diagram of the interface design of a power processing board for a remotely controlled Beidou AIS dual-mode forwarding beacon system is provided for an embodiment of the present application. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0036] like Figure 1 As shown, an embodiment of the present invention provides a method for remotely controlling a Beidou AIS dual-mode forwarding beacon, comprising the following steps:

[0037] Step 1, Beidou satellite broadcasts S, B3, B1, B2b frequency band downlink signals, Beidou transceiver antenna receives weak downlink signals, and outputs them to the RF chip after amplification and filtering by the S, B3, B1, B2b frequency band RF switch and low noise amplifier of the RF chip; the RF chip amplifies, filters, down-converts and samples the downlink signals, and outputs digital intermediate frequency signals to the baseband chip. The baseband chip includes independent receiving signal channels, demodulates, despreads and analyzes the quantized digital intermediate frequency signals, and outputs the processing results through the serial interface;

[0038] Step 2: Signals need to be transmitted outward. When communicating, the baseband chip generates corresponding telegrams as needed, spreads the telegrams and sends them to the RF chip in the form of baseband signals. The RF chip modulates the baseband information to the transmitting carrier, amplifies the transmitting signal, and transmits it to the Beidou transceiver antenna through the power amplifier and RF switch for transmission.

[0039] Step 2 includes: step 21, when the magnetic interface of the forwarding tag is not attracted by the magnet, the water contact of the forwarding tag is immersed in water, or the switch button is pressed to make the forwarding tag enter the working mode; after the forwarding tag enters the working mode, three high-brightness strobe lights start to work synchronously, with a flashing frequency of 30 times / min, and the red LED light starts to flash at a flashing frequency of 40 times / min, and the red LED indicator stops flashing after the forwarding tag is positioned; the forwarding tag starts to work 1 minute after power-on, and the green LED indicator starts to flash 30 times / min, flashing at an interval of 1s with the high-brightness strobe light, and starts to forward the AIS distress information to the target ID; when the forwarding tag fails to operate, the red LED indicator flashes quickly, with a flashing frequency of 120 times / min.

[0040] Step 2 includes: Step 22, when the forwarding tag is working, the AIS receiving module continues to work, and the forwarding period of the distress information is set to 10 minutes, wherein the Beidou core board and the radio frequency box module work for 1 minute every 10 minutes, and the relevant modules need to be powered for 1 minute before forwarding the distress information, update the location information and forward the distress information regularly, and then sleep for 9 minutes, which is a normal working cycle; the forwarding tag automatically turns off the power of the Bluetooth module 10 minutes after being powered on. If the forwarding tag parameter information needs to be configured through the Bluetooth connection, the Bluetooth module can be made to work by restarting the power of the forwarding tag. The Bluetooth module will not be powered off during pairing and connection, and the Bluetooth module will automatically power off after the parameter configuration is completed.

[0041] like Figure 2 As shown, an embodiment of the present invention also provides a remote control Beidou AIS dual-mode forwarding beacon system, which is used to implement a remote control Beidou AIS dual-mode forwarding beacon method of the above embodiment, which includes an antenna unit, a radio frequency front-end module processing board, a core data processing board, a power processing board and a battery pack.

[0042] The antenna unit includes a Beidou transceiver antenna, which is used to receive and transmit Beidou's third-generation radio frequency signals. The outbound signal broadcast by the Beidou satellite first reaches the antenna of the forwarding host, and the collected weak signal is processed and sent to the receiving signal channel. The signal of the forwarding host's transmitting channel is processed by the Beidou transceiver antenna and transmitted to the satellite.

[0043] The RF front-end module processing board is used to perform low-noise amplification on weak signals received by the antenna, provide pure in-band signals for back-end signal processing, and filter out interference signals; it amplifies the power of RF signals carrying information and provides signals with sufficient power for satellite reception.

[0044] The core data processing board includes a Beidou core unit, which has a radio frequency chip and a baseband chip. The radio frequency chip is used to amplify, down-convert, filter, and convert the radio frequency signal processed by the low-noise amplifier into a digital signal for baseband processing; the baseband chip is used to parse and process the digital signal output by the radio frequency chip, and complete the communication information extraction, solution, processing and operation to output Beidou information.

[0045] The power processing board is used to realize the power supply management function of the forwarding tag, and performs corresponding power output management operations by detecting the water contact or button status.

[0046] The battery pack is used to provide working power for the antenna unit, the RF front-end module processing board, the core data processing board and the power processing board. The battery pack can report data information such as power through the communication interface to provide parameters for the forwarding tag system master control.

[0047] The antenna unit also includes an AIS antenna, which is used to receive signals in the AIS frequency band and send the collected weak signals to a receiving signal channel after processing.

[0048] The RF front-end module processing board includes a power amplifier unit, a low noise amplifier unit, a switch unit and an indicator light unit; the indicator light unit is composed of a high-brightness indicator light and a designed circuit, and is used to indicate the working status of the forwarding tag.

[0049] The core data processing board also includes a data processing unit, an RS232 serial port module, a DC / DC module, an LDO module, a water switch, a magnetic switch and an IC card. The data processing module is used to perform protocol processing on the data of each module, monitor the power information and power supply status of the battery pack, control the indicator light unit to display the operating status of the device, and perform interactive control functions for external interactive processing of data information; the RS232 serial port module includes physical buttons, water contacts, magnetic interfaces and external data interfaces, providing necessary interface units for the work and testing of the forwarding tag.

[0050] Water contact: When the water contact of the forwarding tag is immersed in water (even if the forwarding tag is not turned on by the switch button), the forwarding tag is activated and enters the working mode, the high-brightness strobe light starts to work, and the red LED light starts to flash. After the forwarding tag is located, the red LED indicator stops flashing. One minute after the power is turned on, the forwarding tag starts to work, the green LED indicator starts to flash, and it starts to forward the distress information to the target ID. However, when the magnetic interface of the forwarding tag is adsorbed by a magnet, it cannot be activated even if the water contact of the forwarding tag is immersed in water.

[0051] The magnetic interface of the forwarding tag controls the working state of the device by closing or disconnecting the reed switch. When the magnetic interface of the forwarding tag is adsorbed by a magnet, the forwarding tag cannot be activated and is in a power-off state. The reed switch is an electric switch controlled by a magnetic field. Its interior consists of two soft magnetic metal reeds sealed in a glass tube. The interval between the two reeds is very small. When the external magnetic field approaches, the two reeds are magnetized to produce magnetic fields of different polarities. When the magnetic field is sufficient, the two reeds are attracted together, so that the switch is turned on; when the external magnetic field is far away, the reed gradually demagnetizes and disconnects, and the switch is disconnected. External data interface: The device supports 1 RS232 serial data interface externally, and the test interface is multiplexed with the filling port.

[0052] The power processing board includes a battery processing module, an AIS module, a Bluetooth module and an external interface data power interface. The AIS module is used to automatically receive AIS information, and send it to the forwarding system main control for analysis through the data processing unit and the RS232 serial port module, and send distress information; the Bluetooth module is used to realize the Beidou / AIS forwarding data wireless transparent transmission function and realize data interaction with the mobile terminal.

[0053] Specifically, the RF front-end module processing board in this embodiment is mainly composed of two parts: a low noise amplifier unit and a power amplifier unit. The power amplifier unit adopts the Innoson YHMB1640H6 power amplifier module. Among them, the low noise amplifier unit is mainly divided into 4-channel low noise amplifiers, including S frequency low noise amplifier, B1 frequency low noise amplifier, B2 frequency low noise amplifier and B3 frequency low noise amplifier, and the power amplifier unit is composed of L power amplifier. The RF front-end module processing board plays a key role in forwarding Beidou communication. It mainly completes the low-noise amplification of the weak signal received by the antenna, provides a pure in-band signal for the back-end signal processing, and filters out the interference signal; it performs power amplification on the RF signal carrying information to provide a signal with sufficient power for satellite reception. The specific principle block diagram is as follows Figure 3 , Figure 4 , Figure 5 and Figure 6 shown. Figure 4 The right side of Figure 5 The left side corresponds to the connection.

[0054] like Figure 7As shown, the low noise amplifier unit is a special type of electronic amplifier, which is mainly used to amplify the received wireless signal in the communication system for processing by the back-end RF channel unit. The low noise amplifier unit of this device is mainly divided into 4 channels of low noise amplifiers, including S frequency low noise amplifier, B1 frequency low noise amplifier, B2 frequency low noise amplifier and B3 frequency low noise amplifier. According to the intensity of the signal broadcast by Beidou satellite reaching the earth's surface, it is about -90dBm to 130dBm, and the ability of the RF channel unit to sample the signal is -40dBm to -110dBm. In order to ensure that the terminal can stably receive the signal, the amplification gain of the low noise amplifier is designed to be above 40dB. The 4-channel low noise amplifiers are composed of a first-stage dielectric filter, a two-stage surface acoustic wave filter, a three-stage low noise amplifier, and a π-type attenuator. Since the frequency of each low noise amplifier is different, the frequency of the filter and amplifier will be different.

[0055] The core data processing board is mainly composed of Beidou core board (DA204), data processing unit (MCU), and interface unit. The principle block diagram of the core data processing board is as follows: Figure 8 The Beidou core board uses the Changsha Haige DA204 module.

[0056] The data processing unit is the main control unit of the product. It integrates the data of each module unit through the serial port and controls the output. At the same time, it detects / controls the operating status of the device through the GPIO interface. The data processing unit includes: button detection, battery power detection, strobe indication control, working status indication control, external data interface interaction, Beidou core module data protocol processing, AIS module data protocol processing, and Bluetooth module data protocol processing functions. The data unit mainly completes the communication control with the Beidou core module, AIS module, Bluetooth module, and external interface; controls the strobe indication unit and the working status indication unit to indicate the working status; detects the button unit to control the device to complete the power on / off, test and other status inputs; detects the battery power information and indicates it through the self-test function; and realizes the data interaction function through the external data interface. The data processing module is the main control part of the entire device and plays a central processing role in the operation of the device. The block diagram of the data processing unit is as follows Fig. 9 shown.

[0057] The power processing board is mainly composed of a power management module, a Bluetooth module, an AIS module, and an interface unit. The power module converts the output voltage of the lithium battery pack into the voltage required for the operation of each module of the device; the Bluetooth module mainly realizes the data transparent transmission function; the AIS module mainly realizes the function of obtaining search and rescue information. The principle block diagram of the power processing board is shown in the figure. Fig.10 shown.

[0058] The power management module is a necessary condition for the operation of the equipment. The quality of the power design determines the workability and stability of each module. Reasonable power design can reduce the power consumption of the equipment, reduce the volume and space of the equipment, and reduce costs. In the design of the forwarding power supply, the high current design processing part uses DC-DC power management to improve efficiency. The noise-sensitive low-noise amplifier RF circuit clock circuit uses LDO power supply to reduce the interference of power supply noise on the signal. The principle design of the power module is as follows Fig.11 shown.

[0059] By pairing and connecting the forwarding Bluetooth tag, the device parameter information can be configured, such as forwarding frequency, target ID and other parameter information. The Bluetooth module uses the FSC-BT618 model module of Shenzhen Feiyitong Technology Co., Ltd. FSC-BT618 is a wireless microcontroller for Bluetooth 5.2 low-power applications. The extremely low active RF and MCU current and the current consumption in low-power mode can provide excellent battery life. The FSC-BT618 Bluetooth module supports UART interface and Bluetooth serial port transparent transmission. It has the advantages of low cost, small size, low power consumption, high transceiver sensitivity, etc. It only needs to be equipped with a few peripheral components, as shown in Table 1.

[0060] Table 1 Bluetooth module parameters

[0061] project Technical Parameters Bluetooth Protocol Bluetooth V5.2 BLE Working frequency band 2.402-2.480GHz Modulation GFSK UART Interface Default 115200, N, 8, 1 Baud rate Support from 1200 to 921600 Power supply 1.8V~3.8V Maximum peak current 9.6mA (TX power @+5dBmTX) Standby current 0.94uA Transmit power +5dBm(max) Dimensions 26.9mm(L)×13mm(W)×2.0mm(H) Operating / Storage Temperature -40℃～+85℃

[0062] The AIS module uses the DY421 module of Deyi Technology to realize the function of automatically receiving AIS information. The DY421 module has ultra-high sensitivity and small size, which is easy to embed into mobile devices. The key features of the DY421 module are shown in Table 2.

[0063] Table 2 Key features of AIS module

[0064]

[0065]

[0066] The AIS antenna uses a high-performance omnidirectional rubber stick antenna, the frequency band has no clutter interference, and has the characteristics of long transmission distance and anti-interference. Features of the AIS antenna: The vibrator is made of springs, with anti-interference design; high sensitivity, good consistency, high gain; corrosion resistance, aging resistance, and vibration resistance; the frequency range is adjustable, as shown in Table 3.

[0067] Table 3 AIS antenna indicators

[0068] Frequency range 162MHz Gain 1.5dbi VSWR ＜2 impedance 50Ω Directionality Omnidirectional Polarization Vertical polarization Antenna size 400mm Connector method SMA Operating temperature -40～+70℃ Maximum Power 1～5W

[0069] like Fig.12As shown in the figure, the power processing board interface unit mainly includes two interface units, namely, the battery pack power input interface (8-12V) and the power data interface. The battery pack interface provides input power to the power processing board, which is processed by the power module of the power processing board and provides the power required for the work of other module units of the forwarding tag through the power data interface. At the same time, the Bluetooth and AIS modules on the power processing board exchange data with the core data processing board through the power data interface.

[0070] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention should be covered within the protection scope of the present invention. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be based on the scope defined by the claims.

Claims

1. A method for remotely controlling Beidou AIS dual-mode forwarding beacon, characterized in that: The following steps are involved: Step 1, Beidou satellite broadcasts S, B3, B1, B2b frequency band downlink signals, Beidou transceiver antenna receives weak downlink signals, and outputs them to the RF chip after amplification and filtering by the S, B3, B1, B2b frequency band RF switch and low noise amplifier of the RF chip; the RF chip amplifies, filters, down-converts and samples the downlink signals, and outputs digital intermediate frequency signals to the baseband chip. The baseband chip includes independent receiving signal channels, demodulates, despreads and analyzes the quantized digital intermediate frequency signals, and outputs the processing results through the serial interface; Step 2: Signals need to be transmitted outward. When communicating, the baseband chip generates corresponding telegrams as needed, spreads the telegrams and sends them to the RF chip in the form of baseband signals. The RF chip modulates the baseband information to the transmitting carrier, amplifies the transmitting signal, and transmits it to the Beidou transceiver antenna through the power amplifier and RF switch for transmission.

2. A method for remotely controlling Beidou AIS dual-mode forwarding mark according to claim 1, characterized in that: Step 2 includes: step 21, when the magnetic interface of the forwarding tag is not attracted by the magnet, the water contact of the forwarding tag is immersed in water, or the switch button is pressed to make the forwarding tag enter the working mode; after the forwarding tag enters the working mode, three high-brightness strobe lights start to work synchronously, with a flashing frequency of 30 times / min, and the red LED light starts to flash at a flashing frequency of 40 times / min, and the red LED indicator stops flashing after the forwarding tag is positioned; the forwarding tag starts to work 1 minute after power-on, and the green LED indicator starts to flash 30 times / min, flashing at an interval of 1s with the high-brightness strobe light, and starts to forward the AIS distress information to the target ID; when the forwarding tag fails to operate, the red LED indicator flashes quickly, with a flashing frequency of 120 times / min.

3. A method for remotely controlling Beidou AIS dual-mode forwarding mark according to claim 1, characterized in that: Step 2 includes: Step 22, when the forwarding tag is working, the AIS receiving module continues to work, and the forwarding period of the distress information is set to 10 minutes, wherein the Beidou core board and the radio frequency box module work for 1 minute every 10 minutes, and the relevant modules need to be powered for 1 minute before forwarding the distress information, update the location information and forward the distress information regularly, and then sleep for 9 minutes, which is a normal working cycle; the forwarding tag automatically turns off the power of the Bluetooth module 10 minutes after being powered on. If the forwarding tag parameter information needs to be configured through the Bluetooth connection, the Bluetooth module can be made to work by restarting the power of the forwarding tag. The Bluetooth module will not be powered off during pairing and connection, and the Bluetooth module will automatically power off after the parameter configuration is completed.

4. A remote control Beidou AIS dual-mode forwarding beacon system, used to implement a remote control Beidou AIS dual-mode forwarding beacon method as described in any one of claims 1-3, characterized in that: Including antenna unit, RF front-end module processing board, core data processing board, power processing board and battery pack; The antenna unit includes a Beidou transceiver antenna, which is used to receive and transmit Beidou third-generation radio frequency signals. The outbound signal broadcast by the Beidou satellite first reaches the antenna of the forwarding host, and the collected weak signal is processed and sent to the receiving signal channel. The signal of the forwarding host transmission channel is processed by the Beidou transceiver antenna and transmitted to the satellite; The RF front-end module processing board is used to perform low-noise amplification on the weak signal received by the antenna, provide a pure in-band signal for back-end signal processing, and filter out interference signals; perform power amplification on the RF signal carrying information, and provide a signal with sufficient power for satellite reception; The core data processing board includes a Beidou core unit, which has a radio frequency chip and a baseband chip. The radio frequency chip is used to complete the signal amplification, down-conversion, filtering, and analog-to-digital conversion of the radio frequency signal processed by the low noise amplifier to the digital signal processed by the baseband; the baseband chip is used to complete the analysis and processing of the digital signal output by the radio frequency chip, and complete the communication information extraction, solution, processing and operation output Beidou information; The power processing board is used to realize the power supply management function of the forwarding tag, and performs corresponding power output management operations by detecting the water contact point or button status; The battery pack is used to provide working power for the antenna unit, the RF front-end module processing board, the core data processing board and the power processing board. The battery pack can report data information such as power through the communication interface to provide parameters for the forwarding tag system master control.

5. A remote-controlled Beidou AIS dual-mode forwarding beacon system according to claim 4, characterized in that: The antenna unit also includes an AIS antenna, which is used to receive signals in the AIS frequency band and send the collected weak signals to a receiving signal channel after processing.

6. A remote-controlled Beidou AIS dual-mode forwarding beacon system according to claim 5, characterized in that: The RF front-end module processing board includes a power amplifier unit, a low noise amplifier unit, a switch unit and an indicator light unit; the indicator light unit is composed of a high-brightness indicator light and a designed circuit, and is used to indicate the working status of the forwarding tag.

7. A remote-controlled Beidou AIS dual-mode forwarding beacon system according to claim 6, characterized in that: The core data processing board also includes a data processing unit, an RS232 serial port module, a DC / DC module, an LDO module, a water switch, a magnetic switch and an IC card; The data processing module is used to perform protocol processing on the data of each module, monitor the power information and power supply status of the battery pack, control the indicator light unit to display the operating status of the equipment, and perform interactive control functions for external interactive processing of data information; the RS232 serial port module includes physical buttons, water contacts, magnetic suction interfaces and external data interfaces, providing necessary interface units for the work and testing of the forwarding tag.

8. A remote-controlled Beidou AIS dual-mode forwarding beacon system according to claim 7, characterized in that: The power processing board includes a battery processing module, an AIS module, a Bluetooth module and an external interface data power interface. The AIS module is used to automatically receive AIS information, and send it to the forwarding system main control for analysis through the data processing unit and the RS232 serial port module, and send distress information; the Bluetooth module is used to realize the Beidou AIS forwarding data wireless transparent transmission function and realize data interaction with the mobile terminal.

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