Unmanned aerial vehicle control system based on Beidou short message communication

Abstract

The invention discloses an unmanned aerial vehicle control system based on Beidou short message communication, and aims to solve the communication problem of an unmanned aerial vehicle in a remote area or an environment with unstable network signals. By integrating the Beidou satellite short message communication module, the data compression algorithm and the message confirmation mechanism, the unmanned aerial vehicle can still keep a stable and efficient communication link with the ground station under the condition that a conventional communication network fails, and the method is particularly suitable for the unmanned aerial vehicle to execute tasks such as disaster rescue and environment monitoring. The invention provides a multi-mode communication mechanism which comprises a conventional mode, an emergency mode and a mixed mode so as to cope with different task requirements and environment changes.

Description

Technical Field

[0001] The present invention aims to provide a UAV control system based on Beidou short message communication. Background Art

[0002] Existing drone communication systems mostly rely on radio stations to transmit information and control drones. This technology works well in open, unobstructed areas such as cities or plains, but in remote or harsh environments such as mountains, oceans, and deserts, the stability and reliability of communication are seriously affected, causing drones to lose contact with ground stations and be unable to transmit mission data or conduct real-time monitoring in a timely manner.

[0003] To address this problem, some technical solutions have introduced satellite communications, such as using GEO satellites for long-distance communications. However, due to the high orbital altitude of GEO satellites, their signal propagation delay is large and they are easily affected by atmospheric disturbances, resulting in reduced timeliness and stability of communications. The emergence of the Beidou satellite system has provided new possibilities for drone communications, especially its short message function, which can achieve stable point-to-point communications without relying on traditional networks.

[0004] Currently, most drones use radio stations for communication and control. This method has the following problems

[0005] 1) Poor reliability of long-distance communication. Traditional wireless communications are susceptible to interference or signal attenuation at long distances or in complex terrain environments, resulting in communication interruption.

[0006] 2) Communications in emergency situations cannot be guaranteed. When a drone encounters a communication failure or loses contact, traditional radio communication methods may not be able to restore contact in time.

[0007] 3) Poor communication stability in harsh environments. In extreme environments such as deserts, oceans, and mountains, traditional radio wave communications will be seriously interfered with by environmental factors. Summary of the invention

[0008] In view of the above problems in the prior art, the present invention proposes a UAV control system based on Beidou short message communication to overcome the shortcomings of the prior art. Beidou short message communication relies on satellite networks and can achieve stable communication in areas where ground communication signals cannot reach, ensuring that the UAV can maintain contact with the ground control station during long-distance missions and providing stable communication services in extreme climates and complex terrains.

[0009] According to one embodiment of the present invention, the above-mentioned purpose of the present invention is achieved through the development and coordinated use of UAV flight control, airborne Beidou short message terminal, ground Beidou short message terminal, and ground station. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of a UAV control system based on Beidou short message communication according to the present invention.

[0011] Figure 2 It is a working flow chart of the unmanned aerial vehicle control system based on Beidou short message communication according to the present invention.

[0012] Figure 3 Various communication modes of the UAV control system based on Beidou short message communication according to the present invention are shown. DETAILED DESCRIPTION

[0013] The technical solution of the present invention is described below in conjunction with embodiments.

[0014] 1) UAV control system based on Beidou short message communication

[0015] like Figure 1 As shown, the UAV control system according to the present invention includes a UAV flight control 1, an airborne Beidou short message terminal 2, a ground Beidou short message terminal 4, and a ground station 5, wherein the UAV flight control 1 and the airborne Beidou short message terminal 2 are installed on the UAV and are connected to each other; the ground Beidou short message terminal 4 and the ground station 5 are deployed on the ground and are connected to each other.

[0016] The specific workflow of the UAV control system based on Beidou short message communication is as follows: Figure 2 . The airborne Beidou short message terminal 2 equipped with the UAV sends and receives data through short messages; the data information of the UAV flight control 1 is converted into short message frame format data by the airborne Beidou short message terminal 2, and the data is sent to the Beidou satellite 3; the Beidou satellite receives the short message frame format data and sends it to the ground Beidou short message terminal 4; the ground Beidou short message terminal 4 converts the received short message frame format data into UAV data information and sends it to the UAV ground station 5; after receiving the UAV data information, the UAV ground station 5 interprets the data and displays the UAV data information; the UAV ground station 5 can send control instructions, such as landing, returning, etc., to the ground Beidou short message terminal 4; the ground Beidou short message terminal 4 converts the received UAV ground station control instructions into short message frame format data and sends it to the Beidou satellite 3; the Beidou satellite 3 receives the short message frame format data and sends it to the airborne Beidou short message terminal 2; the airborne Beidou short message terminal 2 converts the received short message frame format data into UAV data information and sends it to the UAV flight control 1, and the UAV flight control 1 performs corresponding actions.

[0017] Through the above process, the UAV control system based on Beidou short message communication is realized.

[0018] 2) Data Compression Algorithm

[0019] The drone data information uses a data compression algorithm to compress and simplify all the drone flight control information, greatly reducing the amount of data so that it can be sent by short message terminals and reduce communication delays.

[0020] The data compression algorithm is based on the MAVLink2 protocol, which packages and compresses the drone's position, altitude, speed, attitude, and power information. The compression technology based on the MAVLink2 protocol ensures that the amount of data is reduced without losing key data, and adapts to the bandwidth limitations of Beidou short messages.

[0021] 3) Multiple communication modes

[0022] like Figure 3 As shown, the UAV control system based on Beidou short message communication of the present invention supports multi-mode communication to cope with different mission requirements and environmental changes, including:

[0023] Conventional mode 6: In areas without obstructions and with good network coverage, conventional radio networks are used for communication first, with Beidou short messages as a backup;

[0024] Emergency Mode 7: In areas where the radio network is interrupted or the signal is weak, it automatically switches to Beidou short message communication to ensure the continuous transmission of mission data;

[0025] Hybrid Mode 8: Uses both conventional radio networks and BeiDou short messages for data transmission to improve communication reliability and data transmission speed.

[0026] 4) Ground station software development

[0027] The UAV ground station software is designed with special data sending and receiving logic, supports silent flight, and is used in conjunction with the Beidou short message communication system.

[0028] 1. Beneficial effects

[0029] The advantages of the present invention are:

[0030] 1) Solve the communication problem of UAVs in remote areas or in environments with unstable network signals. Through Beidou short messages, UAVs can still maintain a stable and efficient communication link with the ground station when the conventional radio communication network fails, which is particularly suitable for UAVs to perform disaster relief, environmental monitoring and other tasks.

[0031] 2) In order to improve communication efficiency and data transmission reliability, the present invention optimizes the communication process, which is specifically reflected in the data compression algorithm, adjusting the drone flight control data sending logic, and packaging and compressing the drone position, altitude, speed, attitude, and power information, thereby reducing the amount of data that needs to be transmitted and improving the utilization rate of the communication bandwidth.

[0032] 3) The communication method of the present invention supports multi-mode communication to cope with different task requirements and environmental changes:

[0033] Conventional mode: In areas without obstructions and with good network coverage, conventional wireless networks are used for communication first, with Beidou short messages as a backup.

[0034] Emergency mode: In areas of network interruption or weak signal, it automatically switches to Beidou short message communication to ensure continuous transmission of mission data.

[0035] Hybrid mode: Use both regular networks and Beidou short messages for data transmission to improve communication reliability and data transmission speed.

[0036] In order to make the purpose, technical solution and advantages of the present invention more clear, some specific application examples of the present invention are given below. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. Example 1: Application in disaster relief missions

[0037] After natural disasters such as earthquakes, floods or mudslides, traditional communication infrastructure may be damaged, resulting in communication network interruption, affecting the coordination and implementation of rescue work. In this case, drones equipped with Beidou short message communication modules can provide reliable aerial survey data guarantee.

[0038] The specific implementation is as follows:

[0039] Equipment configuration: The drone is integrated with the Beidou short message terminal, which can send the current status information of the drone when the traditional communication network is unavailable.

[0040] Operation process: After the drone arrives at the disaster area, it sends key data to the remote ground station through the Beidou short message terminal. After receiving this data, the ground station can monitor the flight status of the drone, understand the drone's aerial survey trajectory, obtain data through the payload carried by the drone, evaluate the current situation of the disaster area, and pass this information to the rescue team.

[0041] Communication mechanism: Through the message confirmation mechanism, the drone will wait for the confirmation information of each key message. Once the confirmation fails, the system will automatically trigger the retransmission function until the ground station successfully receives all the data. This ensures the reliability of communication and the integrity of the data.

[0042] Example 2: Application in remote environmental monitoring

[0043] In remote environmental monitoring missions, such as climate research, desert ecological monitoring or ocean buoy observation points, drones face complex communication challenges. To ensure the continuity and reliability of data transmission, drones use Beidou short messages as the main data transmission channel.

[0044] The specific implementation is as follows:

[0045] Equipment configuration: Drones operating in these remote areas are equipped with Beidou short message communication modules to collect and transmit environmental data such as temperature, humidity, atmospheric composition and pollutant concentrations.

[0046] Operation process: The drone operates autonomously in extreme environments and continuously collects environmental data. When traditional communication networks are unavailable, Beidou short message communication is used as the main means of communication to ensure that key environmental parameters (such as real-time changes in extreme weather) can be transmitted to the ground station for analysis in a timely manner.

[0047] Communication mechanism: In these remote areas, Beidou short message communication provides stable transmission services, especially for sudden environmental changes. UAVs can use this communication method to ensure accurate data transmission, thereby ensuring the success of monitoring missions.

[0048] To sum up, the UAV control system based on Beidou short message communication of the present invention can communicate through short messages between UAV flight control, airborne Beidou short message terminal, Beidou satellite, ground Beidou short message terminal, and ground station. Communication can also be achieved in network-free environments such as mountainous areas, deserts or seas. It is particularly suitable for UAVs to perform remote monitoring, disaster relief, environmental detection and other tasks.

Claims

1. UAV control system based on Beidou short message communication, characterized by include: UAV flight control(1) Airborne Beidou short message terminal (2), Ground-based Beidou short message terminal (4), Ground Station (5), in: The UAV flight control (1) and the airborne Beidou short message terminal (2) are installed on the UAV and connected to each other. The ground Beidou short message terminal (4) and the ground station (5) are deployed on the ground and connected to each other. The airborne BeiDou short message terminal (2) sends and receives data via short messages. The flight control data stream of the UAV flight control (1) is converted into short message frame format data through the airborne Beidou short message terminal (2), and the flight control data stream of the short message frame format data is sent to the Beidou satellite (3). The BeiDou satellite sends the received flight control data stream to the BeiDou short message terminal (4) on the ground. The ground Beidou short message terminal (4) converts the received flight control data stream in the form of short message frame format data into a flight control data stream in the form of unmanned aerial vehicle data information, and sends the flight control data stream in the form of unmanned aerial vehicle data information to the unmanned aerial vehicle ground station (5). The UAV ground station (5) interprets the flight control data stream in the form of UAV data information. The UAV ground station (5) is used to send control instructions to the ground Beidou short message terminal (4). The ground Beidou short message terminal (4) converts the received control command into short message frame format data and sends it to the Beidou satellite (3). The BeiDou satellite (3) sends the received control instruction in the form of short message frame format data to the airborne BeiDou short message terminal (2). The airborne Beidou short message terminal (2) converts the control instruction received in the form of short message frame format data into the form of UAV data information, and sends the control instruction in the form of UAV data information to the UAV flight control (1). The UAV flight control (1) performs corresponding actions according to the control instructions.

2. The unmanned aerial vehicle control system based on Beidou short message communication according to claim 1 is characterized in that: The drone data information uses a data compression algorithm based on the MAVLink2 protocol to package and compress information including the drone's position, altitude, speed, attitude, and power.

3. The unmanned aerial vehicle control system based on Beidou short message communication according to claim 1 is characterized in that: The drone control system supports multi-mode communications, including: Normal mode, in which conventional radio networks are used for communication in areas with good network coverage and without obstructions. Emergency mode, in which it automatically switches to Beidou short message communication in areas of radio network interruption and / or weak signal, Hybrid mode, where both normal mode and emergency mode are used for data transmission.

4. The unmanned aerial vehicle control system based on Beidou short message communication according to claim 1 is characterized in that: A message confirmation mechanism is adopted, in which the drone waits for confirmation information of each key message. When the confirmation fails, the UAV control system automatically triggers the retransmission function until the ground station successfully receives all the data.

5. The UAV control method based on Beidou short message communication is characterized by include: Using the airborne Beidou short message terminal (2) to send and receive data via short messages, The flight control data stream of the UAV flight control (1) is converted into short message frame format data through the airborne Beidou short message terminal (2), and the flight control data stream of the short message frame format data is sent to the Beidou satellite (3). The received flight control data stream is sent to the ground Beidou short message terminal (4) via the Beidou satellite. The received flight control data stream in the form of short message frame format data is converted into a flight control data stream in the form of unmanned aerial vehicle data information through the ground Beidou short message terminal (4), and the flight control data stream in the form of unmanned aerial vehicle data information is sent to the unmanned aerial vehicle ground station (5). The UAV ground station (5) interprets the flight control data stream in the form of UAV data information. The control command is sent to the ground Beidou short message terminal (4) through the UAV ground station (5). The ground-based Beidou short message terminal (4) converts the received control command into short message frame format data and sends it to the Beidou satellite (3). The control instruction received in the form of short message frame format data is sent to the airborne Beidou short message terminal (2) via the Beidou satellite (3). The airborne Beidou short message terminal (2) converts the control instruction received in the form of short message frame format data into the form of UAV data information, and sends the control instruction in the form of UAV data information to the UAV flight control (1). The UAV flight control (1) performs corresponding actions according to the control instructions. in: The UAV flight control (1) and the airborne Beidou short message terminal (2) are installed on the UAV and connected to each other. The ground Beidou short message terminal (4) and the ground station (5) are deployed on the ground and connected to each other.

6. The method for controlling a UAV based on Beidou short message communication according to claim 5, characterized in that: The drone data information uses a data compression algorithm based on the MAVLink2 protocol to package and compress information including the drone's position, altitude, speed, attitude, and power.

7. The method for controlling a UAV based on Beidou short message communication according to claim 5, characterized in that: The drone control method supports multi-mode communications, including: Normal mode, in which conventional radio networks are used for communication in areas with good network coverage and without obstructions. Emergency mode, in which it automatically switches to Beidou short message communication in areas of radio network interruption and / or weak signal, Hybrid mode, where both normal mode and emergency mode are used for data transmission.

8. The method for controlling a UAV based on Beidou short message communication according to claim 5, characterized in that: A message confirmation mechanism is adopted, in which the drone waits for confirmation information of each key message. When the confirmation fails, the UAV control system automatically triggers the retransmission function until the ground station successfully receives all the data.

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