Unmanned aerial vehicle signal link intelligent monitoring and fault response system based on ad hoc network

Abstract

The invention relates to an unmanned aerial vehicle communication system based on an ad hoc network, in particular to an intelligent monitoring and automatic response method for unmanned aerial vehicle signal link faults. According to the system, efficient communication between the unmanned aerial vehicles is achieved through the ad hoc network technology, the communication link quality of the unmanned aerial vehicles can be monitored in real time, parameters such as signal strength, the signal-to-noise ratio and the bit error rate can be monitored, and the fault condition of a signal link can be automatically diagnosed. When a communication link is detected to be abnormal (such as antenna loosening or signal strength reduction), the system can intelligently judge and automatically switch channels, close damaged channels, prevent overload or damage of a power amplifier, and ensure the stability of the communication system.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles, and more particularly to an intelligent monitoring and fault response system for the signal link of an unmanned aerial vehicle based on an ad hoc network and an implementation method thereof. Background Art

[0002] With the rapid development of unmanned aerial vehicle technology, unmanned aerial vehicles are increasingly widely used in civilian, military, commercial and other fields. When an unmanned aerial vehicle executes a mission, it usually relies on a ground control system for remote control and data transmission. However, in a complex environment, especially in remote and high-altitude flight missions, the stability and reliability of the wireless communication link face severe challenges. Due to the ever-changing environment during flight, such as weather changes, electromagnetic interference and other factors, the communication link is easily interfered with or interrupted, resulting in the inability of the unmanned aerial vehicle to communicate stably. In severe cases, it may lead to the loss of connection of the unmanned aerial vehicle or a safety accident.

[0003] Most unmanned aerial vehicle communication systems adopt traditional wireless communication technologies such as Wi-Fi, LTE, etc. Although these technologies have certain communication capabilities, in unmanned aerial vehicle communication, especially in remote or complex environments, the stability and reliability of these technologies often cannot meet the requirements of high security and high stability. Therefore, how to achieve real-time monitoring, automatic channel switching and dynamic flight decision-making when a fault occurs in the unmanned aerial vehicle communication link to ensure the continuity of communication and the safety of flight has become an important technical problem faced by current unmanned aerial vehicle systems.

[0004] As an emerging wireless communication technology, ad hoc network communication technology can achieve a reliable network connection through the cooperation between multiple devices, and has strong anti-interference ability and self-healing ability. In an ad hoc network communication system, each node can dynamically select the optimal communication path to improve the reliability and flexibility of the communication system. Therefore, ad hoc network technology provides a new idea and solution for solving the stability problem in unmanned aerial vehicle communication.

[0005] Existing unmanned aerial vehicle communication systems based on ad hoc networks usually only focus on the establishment of communication links and data transmission, lacking an intelligent monitoring and fault response mechanism for link quality. When a fault or abnormality occurs in the communication link, the existing technology lacks an automatic detection and intelligent decision-making mechanism, and often relies on manual intervention or a simple retry mechanism. Such a method cannot guarantee communication stability in real time and effectively. Especially when the link fault is serious, it is unable to make a timely flight decision, resulting in a reduction in flight safety.

[0006] How to intelligently monitor and manage the signal link in an ad hoc network environment, combined with the real-time flight state and environmental factors of the unmanned aerial vehicle, and automatically take emergency measures when a fault occurs has become an urgent problem to be solved in the unmanned aerial vehicle communication system.

[0007] Through an intelligent monitoring and fault response mechanism, the present invention realizes real-time monitoring of the signal link, intelligent fault detection, automatic channel switching, and emergency flight decision-making in the ad-hoc network communication of unmanned aerial vehicles, thereby effectively improving the communication stability and flight safety of unmanned aerial vehicles and filling the gaps in the prior art. Summary of the Invention

[0008] The present invention provides an intelligent monitoring and fault response system for the signal link of unmanned aerial vehicles based on ad-hoc network and its implementation method, aiming to improve the reliability of unmanned aerial vehicle communication and flight safety through ad-hoc network technology and intelligent link monitoring, fault detection, and response mechanisms. The system can monitor the quality of the unmanned aerial vehicle communication link in real time, and when a link anomaly is detected, automatically switch channels and adjust flight strategies, thereby effectively avoiding the impact of communication link failures on the unmanned aerial vehicle flight mission.

[0009] To achieve the above object, the intelligent monitoring and fault response system for the signal link of unmanned aerial vehicles based on ad-hoc network provided by the present invention includes the following steps:

[0010] An intelligent monitoring and fault response system for the signal link of unmanned aerial vehicles based on ad-hoc network, characterized by comprising:

[0011] (1) An ad-hoc network communication module. It is used to realize wireless communication between multiple unmanned aerial vehicles through ad-hoc network technology;

[0012] (2) A signal link monitoring module. It is used to monitor parameters such as signal strength, signal-to-noise ratio, and bit error rate of the communication link in real time;

[0013] (3) A fault detection module. It is used to judge whether a communication link fails according to the signal quality data monitored by the signal link monitoring module;

[0014] (4) A channel switching module. It is used to automatically close the faulty channel and switch to a standby channel for communication when a faulty channel is detected;

[0015] (5) A flight decision-making module. It is used to dynamically generate flight emergency decisions, including returning to base, making an emergency landing, etc., according to the severity of the communication link failure and the flight environment (including but not limited to flight altitude, battery power, flight speed, etc.);

[0016] (6) An operator feedback module. It is used to feedback the fault information and flight decisions to the operator through the user interface in real time and provide corresponding operation suggestions.

[0017] Preferably, in the intelligent monitoring and fault response system for the signal link of unmanned aerial vehicles based on ad-hoc network, the fault detection module further includes:

[0018] (1) Signal quality analysis unit. It is used to analyze data such as signal strength, signal-to-noise ratio, and bit error rate provided by the signal link monitoring module, and determine whether the link quality is lower than a preset threshold;

[0019] (2) Fault judgment unit. It is used to judge whether there are faults such as antenna looseness, signal interference, and link instability according to the analysis results of the signal quality analysis unit.

[0020] Preferably, in the intelligent monitoring and fault response system for the UAV signal link based on ad hoc network, the channel switching module further includes:

[0021] (1) Automatic channel selection unit. It is used to automatically select the channel with the best channel quality for communication according to the real-time change of link quality;

[0022] (2) Faulty channel protection unit. It is used to immediately close the faulty channel when a faulty channel is found, and avoid burning out the power amplifier of the channel.

[0023] Preferably, in the intelligent monitoring and fault response system for the UAV signal link based on ad hoc network, the flight decision module automatically selects one or more of the following emergency response strategies according to the type of link fault and the flight environment:

[0024] (1) Automatic return strategy. It is used to automatically return to the take-off point when a minor communication fault is detected;

[0025] (2) Emergency landing strategy. It is used to automatically select a safe area for landing when the communication link is interrupted or the signal quality is completely lost.

[0026] Preferably, in the intelligent monitoring and fault response system for the UAV signal link based on ad hoc network, the operator feedback module interacts with the operator device through wireless communication, transmits fault information in real time, and provides content such as fault reasons, recommended operation steps, and safety warnings.

[0027] Preferably, in the intelligent monitoring and fault response system for the UAV signal link based on ad hoc network, the system further includes:

[0028] (1) Flight environment monitoring module. It is used to monitor flight parameters such as the flight altitude, speed, and battery power of the UAV;

[0029] (2) Fault inference module. It is used to combine the flight parameters provided by the flight environment monitoring module and the link quality data to infer potential communication link faults in advance and provide early warnings.

[0030] Preferably, in the intelligent monitoring and fault response system for UAV signal links based on ad-hoc network, the ad-hoc network communication module includes two or more communication links, and the system can automatically switch to other links for communication when one link fails, ensuring the communication continuity of the UAV.

[0031] 8. An intelligent monitoring and fault response method for UAV signal links based on ad-hoc network, characterized by comprising:

[0032] (1) Establish communication links between multiple UAVs through ad-hoc network technology;

[0033] (2) Real-time monitor the signal quality parameters of the communication links;

[0034] (3) When a link fault is detected, automatically determine the fault type and perform channel switching;

[0035] (4) Generate flight emergency decisions according to the fault type and flight environment, and perform emergency operations such as returning or making an emergency landing;

[0036] (5) Feed back the fault information to the operator through the user interface and provide corresponding operation suggestions.

[0037] Preferably, in the intelligent monitoring and fault response method for UAV signal links based on ad-hoc network, the method further comprises:

[0038] (1) Analyze data such as signal strength, signal-to-noise ratio, and bit error rate to determine whether the communication link is below a preset quality threshold;

[0039] (2) Select the communication channel with the best signal quality through the channel switching module to ensure the stability of the communication link.

[0040] The present invention has the following beneficial effects: Through a multi-level signal link protection mechanism and combining the communication advantages of ad-hoc network, when a UAV communication link fails, the present invention can achieve automatic fault diagnosis, intelligent channel switching, and flight decision-making, ensuring that the UAV can communicate stably and fly safely in a complex environment. The technical solution of the present invention not only solves the problems of slow link fault response and untimely processing in traditional UAV communication systems, but also significantly improves the safety of UAVs and the reliability of task completion through intelligent fault detection and emergency response. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] For a better understanding of the technical solution of the present invention, the accompanying drawings include the following 5 sheets.

[0042] Figure 1 : Schematic diagram of the structure of the intelligent monitoring and fault response system for UAV signal links based on ad-hoc network

[0043] Figure 2 : Flowchart of UAV Signal Link Quality Monitoring and Fault Detection

[0044] Figure 3 : Flowchart of Ad Hoc Network Channel Switching and Flight Decision Response

[0045] Figure 4 : Schematic Diagram of Operator Feedback and Decision Support Interface

[0046] Figure 5 : Flowchart of Flight Environment Monitoring and Fault Inference Specific Implementation Manner

[0047] The present invention provides an intelligent monitoring and fault response system for UAV signal links based on an ad hoc network and an implementation method thereof, aiming to improve the reliability of UAV communication and flight safety through ad hoc network technology and intelligent link monitoring, fault detection and response mechanisms. The system can monitor the quality of the UAV communication link in real time, and when a link anomaly is detected, automatically perform channel switching and flight strategy adjustment, thereby effectively avoiding the impact of communication link failures on UAV flight missions.

[0048] To achieve the above object, the intelligent monitoring and fault response system for UAV signal links based on an ad hoc network provided by the present invention includes the following steps:

[0049] An intelligent monitoring and fault response system for UAV signal links based on an ad hoc network, characterized by including:

[0050] (1) An ad hoc network communication module. It is used to realize wireless communication between multiple UAVs through ad hoc network technology;

[0051] (2) A signal link monitoring module. It is used to monitor parameters such as signal strength, signal-to-noise ratio, and bit error rate of the communication link in real time;

[0052] (3) A fault detection module. It is used to judge whether a communication link fails according to the signal quality data monitored by the signal link monitoring module;

[0053] (4) A channel switching module. It is used to automatically close the faulty channel and switch to a standby channel for communication when a faulty channel is detected;

[0054] (5) A flight decision module. It is used to dynamically generate flight emergency decisions, including returning to base, making an emergency landing, etc., according to the severity of the communication link failure and the flight environment (including but not limited to flight altitude, battery power, flight speed, etc.);

[0055] (6) An operator feedback module. It is used to real-time feedback the fault information and flight decisions to the operator through the user interface and provide corresponding operation suggestions.

[0056] Preferably, in the intelligent monitoring and fault response system for the UAV signal link based on ad hoc network, the fault detection module further includes:

[0057] (1) Signal quality analysis unit. It is used to analyze data such as signal strength, signal-to-noise ratio, and bit error rate provided by the signal link monitoring module, and judge whether the link quality is lower than a preset threshold;

[0058] (2) Fault judgment unit. It is used to judge whether there are faults such as antenna looseness, signal interference, and link instability according to the analysis results of the signal quality analysis unit.

[0059] Preferably, in the intelligent monitoring and fault response system for the UAV signal link based on ad hoc network, the channel switching module further includes:

[0060] (1) Automatic channel selection unit. It is used to automatically select the channel with the best channel quality for communication according to the real-time change of link quality;

[0061] (2) Faulty channel protection unit. It is used to immediately close the faulty channel when a faulty channel is found, and prevent the power amplifier of this channel from being burned out.

[0062] Preferably, in the intelligent monitoring and fault response system for the UAV signal link based on ad hoc network, the flight decision module automatically selects one or more of the following emergency response strategies according to the type of link fault and the flight environment:

[0063] (1) Automatic return strategy. It is used to automatically return to the take-off point when a minor communication fault is detected;

[0064] (2) Emergency landing strategy. It is used to automatically select a safe area for landing when the communication link is interrupted or the signal quality is completely lost.

[0065] Preferably, in the intelligent monitoring and fault response system for the UAV signal link based on ad hoc network, the operator feedback module interacts with the operator device through wireless communication, transmits fault information in real time, and provides content such as fault reasons, recommended operation steps, and safety warnings.

[0066] Preferably, in the intelligent monitoring and fault response system for the UAV signal link based on ad hoc network, the system further includes:

[0067] (1) Flight environment monitoring module. It is used to monitor flight parameters such as the flight altitude, speed, and battery power of the UAV;

[0068] (2) Fault inference module. It is used to combine the flight parameters and link quality data provided by the flight environment monitoring module, infer potential communication link faults in advance, and provide early warnings.

[0069] Preferably, in the intelligent monitoring and fault response system for UAV signal links based on ad hoc network, the ad hoc network communication module includes more than two communication links, and the system can automatically switch to other links for communication when one of the links fails, ensuring the communication continuity of the UAV.

[0070] 8. An intelligent monitoring and fault response method for UAV signal links based on ad hoc network, characterized by comprising:

[0071] (1) Establish communication links between multiple UAVs through ad hoc network technology;

[0072] (2) Real-time monitor the signal quality parameters of the communication link;

[0073] (3) When a link fault is detected, automatically judge the fault type and perform channel switching;

[0074] (4) Generate flight emergency decisions according to the fault type and flight environment, and perform emergency operations such as returning or forced landing;

[0075] (5) Feed back the fault information to the operator through the user interface and provide corresponding operation suggestions.

[0076] Preferably, in the intelligent monitoring and fault response method for UAV signal links based on ad hoc network, the method further includes:

[0077] (1) Analyze data such as signal strength, signal-to-noise ratio, and bit error rate to judge whether the communication link is lower than a preset quality threshold;

[0078] (2) Select the communication channel with the best signal quality through the channel switching module to ensure the stability of the communication link.

[0079] The present invention has the following beneficial effects: Through a multi-level signal link protection mechanism and combining the communication advantages of ad hoc network, when a communication link fault of the UAV occurs, the present invention can achieve automatic fault diagnosis, intelligent channel switching and flight decision-making, ensuring that the UAV can communicate stably and fly safely in a complex environment. The technical solution of the present invention not only solves the problems of slow link fault response and untimely processing in the traditional UAV communication system, but also significantly improves the safety of the UAV and the reliability of task completion through intelligent fault detection and emergency response.

[0080] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. The embodiments are only used to illustrate the technical solutions of the present invention and do not limit the scope of the present invention.

[0081] This embodiment provides a single UAV signal link intelligent monitoring and fault response system based on an ad hoc network, aiming to solve how to intelligently respond and ensure the flight safety of the UAV when a communication link fails. The system includes an ad hoc network communication module, a signal link monitoring module, a fault detection module, a channel switching module, a flight decision-making module, an operator feedback module, and a flight environment monitoring module. Through ad hoc network communication technology, the system can ensure the stability of communication during the flight of the UAV and provide intelligent switching and flight decisions in case of communication link failures.

[0082] 1. System architecture

[0083] As Figure 1 shown, the system structure of the present invention includes the following main modules:

[0084] (1) Ad hoc network communication module. This module realizes the communication between the UAV and external networks (such as ground control stations, other devices, etc.) through ad hoc network technology. Although the present invention mainly focuses on a single UAV, the ad hoc network communication module can ensure an efficient and reliable communication link between the UAV and multiple devices (such as ground stations or other flying devices). In case of failures or interferences, the system ensures communication stability by selecting the optimal channel.

[0085] (2) Signal link monitoring module. The signal link monitoring module is used to monitor the communication link quality between the UAV and external devices in real time. This module tracks the status of the communication link in real time through indicators such as signal strength, signal-to-noise ratio (SNR), and bit error rate (BER). When the link quality is lower than the set threshold, this module provides signal quality data to the fault detection module to help determine whether there is a problem with the communication link.

[0086] (3) Fault detection module. The fault detection module receives data from the signal link monitoring module and analyzes whether the link has failed. The fault detection module can judge whether the link is in an unstable state based on real-time signal data (such as signal strength, bit error rate, etc.) and determine the type of fault (such as signal interference, link packet loss, antenna loosening, etc.). If a link anomaly is found, the fault detection module will initiate an emergency response mechanism.

[0087] (4) Channel switching module. When a channel fails, the channel switching module will automatically close the current faulty channel and switch to a backup channel to continue communication according to the real-time change of the link quality. The channel switching module can ensure that communication is not interrupted and prevent the faulty channel from having an adverse impact on the flight of the UAV, such as avoiding overload or burnout of the power amplifier due to continuous operation.

[0088] (5) Flight decision-making module. After receiving the information fed back by the fault detection module, the flight decision-making module will generate appropriate emergency flight decisions by combining flight environment data (such as flight altitude, battery power, flight speed, etc.). When the link fault is relatively minor, the flight decision-making module may execute the automatic return strategy; while when the link fault is relatively serious, it will automatically execute safety strategies such as emergency landing to ensure the safe landing of the UAV.

[0089] (6) Operator feedback module. The operator feedback module feeds back the system's fault information, flight status, and flight decisions to the operator through the interface. The operator can view the health status of the signal link in real time through this module, obtain the emergency response strategies recommended by the system, and decide whether to intervene in flight control based on the feedback information. This module provides the operator with an intuitive information display to ensure the transparency of flight decisions.

[0090] (7) Flight environment monitoring module. The flight environment monitoring module monitors the flight status of the UAV in real time, such as flight altitude, flight speed, battery power, etc. This module obtains flight data through sensors and provides support to the flight decision-making module. The flight environment monitoring module can also infer potential communication link faults in advance by combining flight status data and signal link quality data to avoid unnecessary risks.

[0091] 2. Workflow

[0092] (1) Signal link monitoring. During the flight of the UAV, the signal link monitoring module monitors the signal quality in real time. When indicators such as signal strength, signal-to-noise ratio, or bit error rate are lower than the set thresholds, the system will activate the fault detection module to analyze the link status.

[0093] (2) Fault detection and judgment. The fault detection module analyzes the signal link data in real time to determine whether a link fault has occurred. If a fault is detected (for example, signal attenuation, high bit error rate), the fault detection module will report the problem to the flight decision-making module and activate the channel switching module.

[0094] (3) Channel switching. When a channel fault is detected, the channel switching module will immediately close the faulty channel and automatically switch to the backup channel for communication. The switching operation of the channel switching module ensures uninterrupted communication and avoids damage to the power amplifier.

[0095] (4) Flight decision response. According to the type of link fault and flight environment parameters, the flight decision-making module will automatically generate emergency flight decisions. If the link problem is relatively minor, the flight decision-making module may recommend that the UAV execute the return operation; if the link fault is relatively serious, the system will automatically generate an emergency landing strategy to ensure the safe landing of the UAV.

[0096] (5) Operator feedback. The operator can view the fault information and flight status data in real time through the feedback module and make further decisions based on the system's suggestions. The operator can also choose to intervene in flight control to help the system adjust the flight route or perform other emergency operations.

[0097] 3. System advantages

[0098] (1) Simplified single - aircraft communication solution. This system is only applicable to a single unmanned aerial vehicle (UAV), but still has the advantages of self - organizing network technology, capable of dynamically adjusting the communication link to ensure communication stability.

[0099] (2) Intelligent fault response. The system can monitor the link quality in real time, intelligently detect faults and automatically switch channels or adjust flight strategies to improve the UAV's adaptability in complex environments.

[0100] (3) Safety guarantee. The flight decision - making module combines flight environment data and can automatically take measures such as returning or making an emergency landing when a link failure occurs to ensure the flight safety of the UAV.

Claims

1. An intelligent monitoring and fault response system for the UAV signal link based on an ad hoc network, characterized in that It includes: (1) An ad-hoc network communication module. It is used to achieve wireless communication between multiple drones through ad-hoc network technology; (2) A signal link monitoring module. It is used to monitor in real time parameters such as the signal strength, signal-to-noise ratio, and bit error rate of the communication link; (3) A fault detection module. It is used to judge whether the communication link has a fault according to the signal quality data monitored by the signal link monitoring module; (4) A channel switching module. It is used to automatically close the faulty channel and switch to the standby channel for communication when a faulty channel is detected; (5) A flight decision-making module. It is used to dynamically generate flight emergency decisions according to the severity of the communication link fault and the flight environment (including but not limited to flight altitude, battery power, flight speed, etc.), including returning to base, making an emergency landing, etc.; (6) An operator feedback module. It is used to feedback the fault information and flight decisions to the operator through the user interface in real time and provide corresponding operation suggestions.

2. The intelligent monitoring and fault response system for the UAV signal link based on the ad hoc network according to claim 1, wherein, The fault detection module further includes: (1) A signal quality analysis unit. It is used to analyze data such as the signal strength, signal-to-noise ratio, and bit error rate provided by the signal link monitoring module to judge whether the link quality is lower than the preset threshold; (2) A fault judgment unit. It is used to judge whether there are faults such as antenna looseness, signal interference, and link instability according to the analysis results of the signal quality analysis unit.

3. The intelligent monitoring and fault response system for the UAV signal link based on the ad hoc network according to claim 1, wherein, The channel switching module further includes: (1) An automatic channel selection unit. It is used to automatically select the channel with the best channel quality for communication according to the real-time change of the link quality; (2) A faulty channel protection unit. It is used to immediately close the faulty channel when a faulty channel is found and prevent the power amplifier of this channel from burning out.

4. The intelligent monitoring and fault response system for the UAV signal link based on the ad hoc network according to claim 1, wherein, The flight decision-making module automatically selects one or more of the following emergency response strategies according to the type of link fault and the flight environment: (1) An automatic return-to-base strategy. It is used to automatically return to the take-off point when a minor communication fault is detected; (2) An emergency landing strategy. It is used to automatically select a safe area for landing when the communication link is interrupted or the signal quality is completely lost.

5. The intelligent monitoring and fault response system for the UAV signal link based on the ad-hoc network according to claim 1, wherein, The operator feedback module interacts with the operator's device through wireless communication, transmits the fault information in real time, and provides content such as the cause of the fault, recommended operation steps, and safety warnings.

6. The intelligent monitoring and fault response system for the UAV signal link based on the ad hoc network according to claim 1, wherein, The system further includes: (1) A flight environment monitoring module. It is used to monitor flight parameters such as the flight altitude, speed, and battery power of the drone; (2) A fault inference module. It is used to infer potential communication link faults in advance by combining the flight parameters provided by the flight environment monitoring module and the link quality data and provide early warnings.

7. The intelligent monitoring and fault response system for the UAV signal link based on the ad hoc network according to claim 1, wherein, The ad-hoc network communication module includes more than two communication links, and the system can automatically switch to other links for communication when one of the links fails, ensuring the communication continuity of the drone.

8. An intelligent monitoring and fault response method for the UAV signal link based on ad hoc network, characterized in that It includes: (1) Establish a communication link between multiple drones through ad-hoc network technology; (2) Monitor the signal quality parameters of the communication link in real time; (3) When a link fault is detected, automatically judge the type of the fault and perform channel switching; (4) Generate flight emergency decisions according to the type of the fault and the flight environment, and perform emergency operations such as returning to base or making an emergency landing; (5) Feedback the fault information to the operator through the user interface and provide corresponding operation suggestions.

9. The method for intelligent monitoring and fault response of an unmanned aerial vehicle signal link based on an ad hoc network according to claim 8, wherein, The method further includes: (1) Analyze data such as signal strength, signal-to-noise ratio, and bit error rate to determine whether the communication link is below a preset quality threshold; (2) Select the communication channel with the best signal quality through the channel switching module to ensure the stability of the communication link.

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