Remote satellite wake-up method and system for a sea surface flying buoy

Abstract

This invention discloses a remote satellite wake-up method and system for sea-surface flying buoys, belonging to the technical field of marine observation equipment and unmanned aerial vehicles. It includes a remote wake-up subsystem and a ground-based remote terminal. The remote wake-up subsystem powers a low-power module via an independent standby battery, achieving ultra-low-power, long-cycle standby with the main power battery completely disconnected. It transmits wake-up short messages via BeiDou / communication satellites, enabling remote wake-up in global open ocean areas. A tiered power-on mechanism avoids surge impacts and ensures electrical safety. This invention can achieve year-long low-power standby, remotely controllable wake-up, and fully autonomous flight operations in open ocean areas, making it particularly suitable for routine marine observation and emergency monitoring tasks in remote sea areas.

Description

Technical Field

[0001] This invention relates to the field of marine observation equipment and unmanned aerial vehicle technology. More specifically, this invention relates to a remote satellite wake-up method and system for a sea surface buoy. Background Technology

[0002] Ocean observation is a core and fundamental means for marine resource development, marine environmental protection, and safeguarding maritime rights. Current marine observation equipment mainly consists of fixed-point anchored buoys, which suffer from limited observation range and insufficient mobility. In contrast, surface buoys with flight capabilities can carry various observation payloads to achieve large-scale mobile observation, representing an important development direction for far-sea marine observation.

[0003] However, existing surface buoys have the following key technical challenges: Insufficient long-cycle standby capability: Buoys deployed in the far sea need to achieve standby for several months to a year. In the existing solution, the flight control and communication modules consume a lot of power during long-term standby, and the main power battery is prone to over-discharge, life decay, or even failure to perform subsequent flight missions when powered for a long time. Remote wake-up has poor reliability: There is no public ground network coverage in the far sea area, conventional satellite communication modules have high power consumption and cannot standby for a long time. In addition, the existing wake-up scheme has no encryption verification mechanism, which is prone to false wake-up. At the same time, there is no graded power-on protection, and the surge at the moment of wake-up can easily damage precision components such as flight control. Summary of the Invention

[0004] One object of the present invention is to solve at least the above-mentioned problems and / or defects, and to provide at least the advantages described below.

[0005] To achieve these objectives and other advantages of the present invention, a method for remotely waking up a sea-surface flying buoy is provided, comprising: S1. When the flight buoy is floating at a fixed point on the target sea surface, the low power module is powered by an independent standby battery, and the rest of the flight buoy's equipment is in a power-off state. S2. After the ground remote terminal sends an encrypted wake-up short message to the flying buoy via relay, the receiving and modulation / demodulation unit of the low-power module confirms the legality and validity of the instructions in the short message. After confirming that the wake-up command in the short message is valid, the S3 low-power module outputs a drive signal to the controllable relay, which drives the main contacts of the relay to close, wakes up the battery management system (BMS) of the main power battery, and turns on the low-voltage output terminal to power the flight control unit, thus completing the staged power-on. S4. After the flight control unit is powered on, the flight buoy performs a full hardware self-test and status calibration. After the self-test is successful, it sends a high-voltage output enable command to the BMS to supply power to the power system and mission payload, thus completing the full power-on operation.

[0006] A remote satellite wake-up system for a sea-surface flying buoy includes: a remote wake-up subsystem and a ground-based remote terminal that transmits wake-up signals to the remote wake-up subsystem via a relay. The remote wake-up subsystem includes: A low-power module mounted on a flight buoy for remote wake-up; Standby battery that powers the low-power module; The main power battery that powers the flying buoy has a built-in battery management system (BMS). The standby battery is independently configured and is completely electrically isolated from the main battery. The BMS is equipped with independent low-voltage output terminals and high-voltage output terminals. The low-voltage output terminal is electrically connected to the flight control unit of the unmanned flight unit, and the high-voltage output terminal is electrically connected to the power system and airborne mission payload of the unmanned flight unit.

[0007] Preferably, the low-power module includes: Satellite communication unit; A modulation and demodulation unit that processes wake-up short messages received by the satellite communication module; Controllable relay; Among them, the controllable relay is a magnetic latching relay, which is normally kept in the open state, and the control terminal of the controllable relay is connected to the signal output terminal of the modem unit. The main contacts of the controllable relay are connected in series in the front end of the control circuit and low voltage output terminal of the aircraft battery BMS.

[0008] The present invention has at least the following beneficial effects: Firstly, this invention has an ultra-long standby capability: by using an independent small battery to power only the low-power wake-up module, the main battery is completely disconnected, and the standby power consumption of the whole device is reduced to the microampere level, which can achieve long-term standby on the sea surface and solve the core pain point of insufficient standby endurance of existing flying buoys. Secondly, this invention features highly reliable global remote wake-up: based on short message wake-up from BeiDou or communication satellites, it has no public network dependency, can cover global ocean areas, and at the same time avoids false wake-up through encryption and verification mechanisms, thus improving wake-up reliability. Third, the present invention has full-link electrical safety protection: it adopts a graded power-on mechanism that first supplies low voltage to the flight controller for self-testing and then turns on high voltage power output, which avoids the surge impact at the moment of wake-up from damaging the flight controller, sensors and other precision components, and greatly improves the system life and operational safety. Fourth, this invention enables fully autonomous, unmanned operation: after being awakened, it can complete the entire process of self-check, power-on, takeoff, and mission execution autonomously, without the need for on-site human intervention, significantly reducing the operational costs of far-sea ocean observation. Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0009] Figure 1 This is a block diagram of the remote wake-up subsystem of the present invention. Detailed Implementation

[0010] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0011] A remotely wakeable sea surface buoy system includes: a remote wake-up subsystem and a ground-based remote terminal that sends a wake-up signal to the remote wake-up subsystem via a relay; Among them, such as Figure 1 As shown, the remote wake-up subsystem includes: A low-power module, mounted on a flight buoy and designed for remote wake-up, is configured as follows: Satellite communication unit 1, compatible with BeiDou satellites or other communication satellites, has a built-in encryption and verification subunit (it should be noted that the built-in encryption and verification subunit in satellite communication units is existing technology, so its working principle will not be described in detail). It only responds to legally encrypted wake-up short messages (it should be noted that legal encryption here means that the wake-up short message is encrypted at three levels: the first level is used to verify whether the identity ID matches, the second level is used to verify the password, and the third level is used to verify whether the short message format is compliant to prevent accidental triggering of erroneous short messages). It is used to receive wake-up short messages forwarded by ground remote terminals through communication satellites / BeiDou satellites and transmit the wake-up short messages to the modulation and demodulation unit. Modulation and demodulation unit 2 demodulates, verifies and decrypts the wake-up short message received by the satellite communication module to confirm that the instruction is legal and valid (it should be noted that the legality and validity of the instruction here refers to the process of decrypting the three-level encryption hierarchy in the wake-up short message to confirm that each level is legal and valid). Both the satellite communication unit and the modulation and demodulation unit are low-power devices. Controllable relay 3, in practical applications, the controllable relay is a magnetic latching relay, which is normally kept in the open state and operates continuously with static low power consumption. The control terminal of the controllable relay is connected to the signal output terminal of the modem unit, and the main contacts of the controllable relay are connected in series in the front end of the control circuit and low voltage output terminal of the aircraft battery BMS. The independent standby battery 4 uses a low-discharge-rate battery that can support long-term standby power supply without frequent maintenance. In practical applications, the standby battery only supplies power to the satellite communication unit, modem unit, and controllable relay control terminals, and is completely electrically isolated from the main battery of the flight buoy. The main power battery 5 supplies power to the flight buoy. The main power battery has a built-in battery management system (BMS) 6. The BMS has independent low-voltage output terminals and high-voltage output terminals. The low-voltage output terminal is electrically connected to the flight control unit of the flight buoy, and the high-voltage output terminal is connected to the flight buoy's power system and other power-consuming units (such as airborne mission payloads). In actual applications, after the BMS is woken up, the low-voltage output terminal is turned on first. After receiving the enable command from the flight control unit, the high-voltage output terminal is turned on, realizing graded power-on and avoiding damage to precision components.

[0012] Through the above settings, the sea surface flying buoy system of the present invention can combine the advantages of long-cycle low-power standby, global remote wake-up, hierarchical power-on safety management and control, and high wave resistance stability, thus solving the industry pain points of existing sea surface flying buoys in terms of long-endurance standby, remote controllability, and insufficient wave resistance performance.

[0013] In practical implementation, the remote wake-up process of the sea surface flying buoy system of the present invention is as follows: S1. Standby Deployment: The flight buoy floats at a fixed point on the water surface, the controllable relay remains disconnected, and the low-voltage and high-voltage output terminals of the main power battery are both turned off. Except for the low-power satellite communication unit, modem unit, and controllable relay, all other power-consuming units of the entire machine are powered off. The independent standby battery maintains the standby power supply for the low-power modules. S2. Wake-up command issuance and command demodulation and drive: The ground remote terminal transmits a wake-up short message, which is sent to the satellite communication unit of the sea surface buoy via a relay satellite; After receiving a short message via the satellite communication unit, the fixed-point floating buoy further uses the modulation and demodulation unit to demodulate, verify and decrypt the short message. After confirming that the command is legal and valid, it sends a drive signal to close the controllable relay in the aircraft battery. S3, graded power-on wake-up: After the controllable relay is closed, the BMS of the main power battery is woken up. The BMS will first open the low voltage output terminal to power the flight control unit, while the high voltage output terminal remains closed. S4. Powering on the entire aircraft: After the flight control unit is powered on and started, it autonomously completes the self-test and status calibration of the entire aircraft hardware (the self-test includes checking the working status of GPS signal, flight control accelerometer, motors, ESC, battery voltage, etc.). After the self-test is successful, it autonomously sends an enable command to discharge the high-voltage output terminal to the BMS. The BMS opens the high-voltage output terminal, and the entire aircraft power system and airborne mission payload are powered, thus realizing the powering on of the entire aircraft. The above solution is merely an illustration of a preferred example and is not limited thereto. When implementing this invention, appropriate substitutions and / or modifications can be made according to the user's needs.

[0014] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Other modifications can be readily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and examples shown and described herein.

Claims

1. A method for remotely waking up a sea-surface flying buoy using satellites, characterized in that, include: S1. When the flight buoy is floating at a fixed point on the target sea surface, the low power module is powered by an independent standby battery, and the rest of the flight buoy's equipment is in a power-off state. S2. After the ground remote terminal sends an encrypted wake-up short message to the flying buoy via relay, the receiving and modulation / demodulation unit of the low-power module confirms the legality and validity of the instructions in the short message. After confirming that the wake-up command in the short message is valid, the S3 low-power module outputs a drive signal to the controllable relay, which drives the main contacts of the relay to close, wakes up the battery management system (BMS) of the main power battery, and turns on the low-voltage output terminal to power the flight control unit, thus completing the staged power-on. S4. After the flight control unit is powered on, the flight buoy performs a full hardware self-test and status calibration. After the self-test is successful, it sends a high-voltage output enable command to the BMS to supply power to the power system and mission payload, thus completing the full power-on operation.

2. A remote satellite wake-up system for a sea surface buoy, applied in the remote satellite wake-up method for a sea surface buoy as described in claim 1, characterized in that, include: A remote wake-up subsystem and a ground remote terminal that sends a wake-up signal to the remote wake-up subsystem via a relay, wherein the remote wake-up subsystem includes: A low-power module mounted on a flight buoy for remote wake-up; Standby battery that powers the low-power module; The main power battery that powers the flying buoy has a built-in battery management system (BMS). The standby battery is independently configured and is completely electrically isolated from the main battery. The BMS is equipped with independent low-voltage output terminals and high-voltage output terminals. The low-voltage output terminal is electrically connected to the flight control unit of the unmanned flight unit, and the high-voltage output terminal is electrically connected to the power system and airborne mission payload of the unmanned flight unit.

3. The remote satellite wake-up method for a sea surface buoy as described in claim 1, characterized in that, The low-power module includes: Satellite communication unit; A modulation and demodulation unit that processes the wake-up short messages received by the satellite communication module; Controllable relay; Among them, the controllable relay is a magnetic latching relay, which is normally kept in the open state, and the control terminal of the controllable relay is connected to the signal output terminal of the modem unit. The main contacts of the controllable relay are connected in series in the front end of the control circuit and low voltage output terminal of the aircraft battery BMS.

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