Plug-and-play avionics remote operation device and method

Abstract

The invention discloses a plug-and-play avionic equipment remote operation device and method, and belongs to the field of avionic equipment. The device is composed of a communication module and a remote operation terminal, the communication module comprises a signal conversion sub-module, a signal selection sub-module and a signal encryption sub-module, a communication mode is selected, data is encrypted, and stable and safe data transmission is ensured; the operation method comprises the following steps: firstly, selecting a main communication mode according to communication stability and distance factors by using the wireless communication connection equipment, then sending a control instruction by means of software of the remote operation terminal, and ensuring secure data transmission and accurate instruction execution through encryption and verification. According to the invention, avionics equipment hardware does not need to be changed, and various defects caused by wired connection and equipment hardware change are overcome; a widely applied serial port is used as a data transmission interface, the plug-and-play application requirement is met, the device is suitable for active service equipment, and the operation and management efficiency in the research, development, test and application process of avionic equipment is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of avionics equipment, and specifically relates to a remote operation device and method for plug-and-play avionics equipment, which aims to solve relevant technical problems such as remote control and data security transmission of avionics equipment during actual use, and ensure that avionics equipment can be conveniently, stably and safely operated, managed and maintained through a remote operation terminal. Background Art

[0002] The current vigorous development of civil and military aviation and safe flight are inseparable from navigation, communication, and surveillance avionics equipment. The effective application and operation and maintenance management of these equipment play a vital role in the safety and efficiency of aviation flight. With the development of the aviation industry and the increase in application needs, the complexity and importance of avionics equipment are increasing day by day, and the need for operations such as status monitoring, program upgrades, and data downloads is becoming increasingly prominent.

[0003] In the process of developing, testing and installing avionics equipment, the traditional method generally uses wired methods to monitor the equipment's operating status, upgrade programs and download data. Although this method can meet basic needs, it has many shortcomings and defects in actual applications. First, the accessibility of wired connections is limited, especially in aircraft with small spaces and dense equipment. The wiring is complicated and maintenance is difficult; second, the wired method is also insufficient in terms of convenience. Operators need to contact the equipment nearby to operate, which is not only inefficient, but also easy to cause equipment damage due to improper operation; finally, in the process of equipment development and testing, it usually undergoes high temperature, low temperature, low pressure, vibration and other test links. The disadvantage of the wired connection method that requires personnel to operate nearby is more prominent.

[0004] In view of the above shortcomings and defects, considering adding wireless communication technology inside avionics equipment to achieve remote operation, although it is feasible in principle design and technical implementation, this method has two important disadvantages. First, it cannot be applied to a large number of existing equipment due to the need to improve the design of the equipment itself; second, adding wireless communication modules inside avionics equipment, especially in order to ensure the stability of communication and adapt to different transmission distances, often requires consideration of multiple sensors, further increasing the complexity and cost of the hardware circuit and reducing the reliability of the equipment. At the same time, if the built-in wireless communication function is not managed properly, there is a risk of information leakage.

[0005] In summary, the traditional wired connection method has been difficult to adapt to the increasingly complex and diverse remote operation requirements in the development, testing and application of avionics equipment; by designing and improving the hardware of avionics equipment and integrating wireless communication functions, it is not applicable to a large number of current equipment, and there are also disadvantages such as increased equipment costs and reduced equipment reliability. Based on the above reasons, the present invention discloses a plug-and-play avionics equipment remote operation device and method, which uses the serial port widely used in traditional avionics equipment as a data interface, converts line data transmission into wireless remote transmission through an external device, and then realizes remote operation of avionics equipment. After the operation is completed, the device can be removed at any time, thereby effectively solving the above-mentioned shortcomings and defects, and providing a flexible, convenient, safe and reliable solution for the remote operation of avionics equipment. At the same time, it does not change the hardware design of the avionics equipment itself, and is suitable for a large number of widely used current equipment.

[0006] Furthermore, as background technology, an introduction to serial ports and three wireless communication technologies is provided.

[0007] Serial port: It is the abbreviation of universal serial communication interface, which is a communication method for sending and receiving byte data in bits. In the early development stage of computers, serial port was one of the main ways for computers to communicate with external devices. It uses fewer lines and has relatively low costs. It is widely used in traditional avionics equipment that are currently widely used. For example, the signal processing module of a certain high-level near-ground equipment uses RS232 serial port to achieve external communication. Serial communication requires an underlying communication protocol. A widely used communication protocol is UART (Universal Asynchronous Receiver / Transmitter. With the underlying communication protocol, in conjunction with the provisions of the signal physical layer (electrical effects, mechanical characteristics, functional characteristics, etc.), some specific serial communication interface standards have been formed, such as RS232, RS422, RS485, etc. The above serial communication interface standards are knowledge that professionals can master through public information, and will not be introduced in detail here; the present invention does not limit which specific communication standard is adopted.

[0008] Three wireless communication methods used: WIFI: It is a wireless LAN technology based on the IEEE 802.11 standard. It uses the 2.4GHz or 5GHz frequency band and can provide a high data transmission rate. It is suitable for high-speed Internet access and device interconnection in indoor or limited areas, such as homes and offices. The application scenario is that mobile phones, computers, smart appliances and other devices connect to wireless routers through WIFI to access the network. The typical communication distance is tens of meters to 100 meters. Bluetooth: is a short-range wireless communication technology that operates in the 2.4GHz frequency band. It is mainly used for short-range data transmission between devices, with the characteristics of low power consumption and high security. Application scenarios: commonly used to connect mobile phones with wireless headphones, keyboards, mice and other peripherals, and can also transmit data between smart watches and mobile phones; the typical communication distance is 10 meters to tens of meters; LORA: A low-power wide area network (LPWAN) technology, the frequency band used varies from region to region. It has a low data transmission rate, but a long communication distance, and can achieve long-distance transmission, such as several kilometers or even more than ten kilometers, and has very low power consumption. It is widely used in the field of Internet of Things, such as smart meter reading, environmental monitoring, etc., to facilitate the connection of multiple low-power devices in a large area. Summary of the invention

[0009] The present invention provides a plug-and-play avionics device remote operation device and a corresponding remote operation method, which realizes efficient, stable and secure wireless data transmission between the avionics device and the remote operation terminal through a communication mode selection mechanism and a targeted data encryption method, so that the operator can remotely execute control instructions such as startup, shutdown, data upload, data loading, system upgrade and fault diagnosis, thereby improving the overall efficiency and safety of remote operation management of the avionics device.

[0010] The plug-and-play avionics remote control device of the present invention comprises two components: a remote control terminal and a communication module.

[0011] Component 1: Remote Operation Terminal The remote operation terminal is a PC, laptop or tablet computer with user interface software, which is connected to the avionics equipment by wireless communication through an external communication module. The optional wireless communication mode is one of WIFI, Bluetooth and LORA, which is determined by the signal selection submodule in the communication module and switched as needed. The user interface software can conveniently send various control instructions such as startup, shutdown, data upload, data loading, system upgrade and fault diagnosis, and can also clearly display the data received from the avionics equipment, so that the operator can grasp the operation status of the equipment in real time.

[0012] Component 2: Communication module There are two communication modules, which are located in the data transmission link between the avionics equipment and the remote operation terminal. Their function is to safely and reliably realize data conversion and data transmission between the avionics equipment and the remote operation device; one communication module is connected to the avionics equipment, and the other communication module is connected to the remote communication terminal. For specific connections, please refer to the attached figure of the present invention. Figure 1 .

[0013] Furthermore, the communication module includes the following three sub-modules.

[0014] Signal conversion submodule: This submodule can convert serial port format data into one of the WIFI, Bluetooth or LORA wireless communication formats as the main communication mode. The specific format to be converted is determined by the signal selection submodule according to the actual situation to meet the data transmission requirements in different wireless communication scenarios.

[0015] Signal selection submodule: Its function is to select and switch the appropriate communication mode in time according to the preset automatic selection rules based on the real-time signal strength, communication stability and distance between the avionics equipment and the remote operation terminal. The details are as follows: the two communication modules transmit fixed command information to each other, and calculate the communication accuracy when the accumulation reaches the set threshold, and select the communication mode with the highest accuracy; when the accuracy is the same, the selection is made in combination with the transmission distance. If it is in the short range, Bluetooth is selected, the medium range is selected for WIFI, and the long range is selected for LORA; through the above method, a communication mode is finally determined as the main communication mode; the short range is 0~10 meters, the medium range is 10~50 meters, and the long range is greater than 50 meters. During implementation, it is adjusted according to the effect in the actual application environment.

[0016] Encryption submodule: It is implemented by hardware encryption chip or software programming, and the transmitted data is encrypted in real time based on the AES algorithm that integrates aviation identification information; the integrated aviation identification information specifically includes: aircraft registration number, ICAO address, avionics equipment serial number and current time, a total of four items, and the implementation steps are as follows: S1: concatenate the aircraft registration number, ICAO address, avionics serial number and current time into a string in a given order; S2: Use a suitable hash function (such as SHA-256 and other common hash functions, which are selected based on security requirements and performance requirements) to perform a hash operation on the concatenated string to generate a binary hash value; S3: The generated binary hash value is truncated from front to back into a key of a length that meets the requirements of the AES algorithm.

[0017] By integrating specific identification information in the aviation field, dynamic keys that change over time are generated. The key generation complies with the requirements of "one key per machine, one key per time", has strong dynamism and security, and can effectively resist security threats during data transmission.

[0018] Remote operation method: The present invention also provides a method for realizing wireless data transmission between avionics equipment and a remote operation terminal using the above-mentioned device. The operation method includes a series of steps such as establishing a communication connection, selecting a communication mode, sending commands and receiving data, executing commands and returning data, and ensuring data encryption. The working principle of each step is described as follows.

[0019] Establishing a communication connection Wirelessly connect the avionics equipment to the remote operation terminal via WIFI, Bluetooth and / or LORA wireless communication. The connection method is as follows: WIFI communication mode: When the remote operation terminal is connected to the avionics equipment via WIFI wireless communication mode, the following steps are adopted: a. The WIFI module of the remote operation terminal searches and connects to the WIFI hotspot of the avionics equipment. b. Once the connection is established, data transmission between the remote operation terminal and the avionics equipment can be carried out via TCP / IP protocol.

[0020] Bluetooth communication mode: When the remote operation terminal is connected to the avionics equipment via Bluetooth wireless communication mode, the following steps are adopted: a. The Bluetooth module of the remote operation terminal is paired with the Bluetooth module of the avionics equipment. b. After the pairing is successful, the remote operation terminal and the avionics equipment can transmit data via the Bluetooth protocol.

[0021] LORA communication mode: When the remote operation terminal is connected to the avionics equipment via LORA wireless communication mode, the following steps are adopted: a. The LORA module of the remote operation terminal is configured to communicate with the LORA module of the avionics equipment, including setting the same frequency, bandwidth, encoding method and other parameters. b. After the configuration is completed, the remote operation terminal and the avionics equipment can transmit data via the LORA protocol.

[0022] After the connection is established, communication is initialized. The device pre-scans each communication method, collects and records basic parameter information such as the initial signal strength, and provides a reference for the reasonable selection of subsequent communication methods. The transmission distance information is set according to the actual distance in the specific application environment.

[0023] Select communication method Working principle of communication mode selection: According to the communication stability between devices and the distance between the avionics equipment and the remote operation terminal, one of the three communication modes (WIFI, Bluetooth or LORA wireless communication) is automatically selected as the main communication mode through preset rules.

[0024] Further, the selection rules preset for the signal selection submodule are described in detail as follows; first, the communication stability of each communication mode (WIFI, Bluetooth and LORA) is detected, and the method is that the two communication modules mutually transmit fixed command information, and when the information accumulates to a certain threshold, the communication accuracy is calculated, and the communication mode with the highest accuracy is selected; if the accuracy is the same, the distance factor is combined, if the distance is in the short range, Bluetooth is selected, if it is in the medium range, WIFI is selected, and LORA is selected for the long distance; through the above method, a communication mode is finally determined as the main communication mode; the short range is 0-10 meters, the medium range is 10-50 meters, and the long range is greater than 50 meters, and appropriate adjustments are made according to the application environment during specific implementation.

[0025] Sending commands and receiving data The user interface software is run on the remote operation terminal. The software uses the communication method selected in step S2 to send control instructions such as startup, shutdown, data upload, data loading, system upgrade and fault diagnosis to the avionics equipment through the external communication module, and receives data from the avionics equipment. When sending instructions, the software will first perform format verification and necessary preprocessing on the instructions to ensure that the instructions are accurate and can be safely transmitted to the avionics equipment; when receiving data, the software will also perform decryption operations and integrity verification first. If the verification process finds that the data does not meet the requirements, the operator will be prompted to re-acquire the data or check whether there is an abnormality in the communication link.

[0026] Instruction execution and data return After receiving the control command from the remote operation terminal, the avionics equipment transmits the command to the corresponding internal processing module through the external communication module. The internal command parsing module accurately parses the received control command and performs the corresponding operation in strict accordance with the command requirements. At the same time, the avionics equipment will also transmit its controlled status and operating status data back to the remote operation terminal through the external communication module. When transmitting data back, the data to be transmitted will be classified and packaged according to factors such as the importance and urgency of the data, and the transmission priority of each part of the data will be reasonably determined to ensure that the key operating status data can be transmitted back to the remote operation terminal in a priority and accurate manner, so that the operator can keep abreast of the latest situation of the equipment in a timely manner.

[0027] Data encryption protection During the entire two-way communication process between avionics equipment and the remote operation terminal, all data is transmitted through the communication module. The encryption submodule in the communication module uses the AES encryption algorithm that integrates aviation identification information to encrypt and decrypt the transmitted data, thereby ensuring the security of data during transmission, preventing data from being illegally stolen or tampered with, and effectively maintaining the confidentiality and integrity of avionics equipment-related data.

[0028] Further, based on the above working principle, the present invention discloses a remote operation method of plug-and-play avionics equipment, which is as follows: S1: Establish a wireless connection between the avionics equipment and the remote operation terminal through WIFI, Bluetooth and / or LORA wireless communication.

[0029] S2: Select the communication mode: Select one of the three communication modes of WIFI, Bluetooth and LORA described in step S1 as the main communication mode; the specific method shall be implemented in accordance with the provisions of paragraph 0024 of this manual.

[0030] S3: running the user interface software on the remote operation terminal, wherein the user interface software sends control instructions for startup, shutdown, data upload, data loading, system upgrade and / or fault diagnosis to the avionics equipment through the communication module in the communication mode selected in step S2; specifically comprising the following sub-steps: S31: The control instruction is encrypted in the encryption processing submodule of the communication module to obtain an AES key; S32: attach the AES key in S31 to the control instruction to form a key-carrying instruction; S33: Sending a keyed instruction to the avionics equipment according to the communication method selected in step S2.

[0031] S4: The communication module connected to the avionics equipment receives the key instruction sent in step S33 and processes it according to the following specific steps: S41: performing a key consistency check in the encryption submodule by removing the AES key from the key-carrying instruction, obtaining the original control instruction, recalculating the AES key, and comparing it with the AES key carried by the key-carrying instruction. If they are the same, the check passes and the process proceeds to step S42; otherwise, the check fails and the process proceeds to step S43; S42: sending the original control instruction obtained in step S41 to the avionics system for processing; S43: The communication module records the verification failure information and transmits it back to the remote control terminal.

[0032] Beneficial technical effects of the technical solution of the present invention: The technical solution disclosed in the present invention can overcome the shortcomings of the prior art and has the following beneficial effects: First, it solves the problems of poor accessibility, low convenience and difficult operation in special environments of traditional wired connections, reduces the workload of cable laying, improves operational efficiency and convenience, and at the same time reduces the risk of equipment damage caused by improper connector plugging and unplugging operations. Second, there is no change in the design of avionics equipment, and the integration of wireless communication modules in avionics equipment will not cause reduced reliability, increased costs and hidden dangers of information leakage. Through the communication mode selection mechanism, combined with the AES algorithm encryption that integrates aviation identification information, efficient, stable and secure wireless data transmission between avionics equipment and remote operation terminals is achieved, facilitating the remote execution of various control instructions; dynamically adjust the communication mode according to signals, distances, etc. to ensure operation continuity and data transmission security, and improve the overall efficiency of avionics equipment operation and management. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 The present invention is a working principle diagram of a remote operation device for plug-and-play avionics equipment.

[0035] Figure 2 The invention discloses a communication module principle block diagram of a remote operation device for plug-and-play avionics equipment.

[0036] Figure 3 The invention discloses a working flow chart of a remote operation method of a plug-and-play avionics device. DETAILED DESCRIPTION

[0037] It should be emphasized that the provided embodiment is merely a feasible example given to facilitate understanding of the present invention. In actual application scenarios, professionals in this field can flexibly adjust and change the embodiments according to factors such as different types of avionics equipment, specific interface communication methods, specific distance ranges, actual environmental conditions, and operational requirements without paying any creative work, thereby obtaining many other embodiments, which should also be covered within the scope of protection of the present invention.

[0038] Example 1 Embodiment 1 is a specific design and implementation of a plug-and-play avionics equipment remote control device.

[0039] The technical solution provided by the present invention includes two components.

[0040] Component 1: remote operation terminal. The remote operation terminal of this embodiment is a laptop computer equipped with an RS232 serial port, the interface is a universal DB9 connector, and uses serial port communication software (XCOM 2.6) as the user interface software for communication control.

[0041] Component 2: Communication module. The principle block diagram of the communication module is shown in the attached diagram of the present invention. Figure 2 ,First, there are the encryption submodule and the signal selection submodule. These two modules are implemented using STM32 microcontroller software programming. The specific methods are as follows: Step 1: According to the method provided by the present invention, the data from RS232 is encrypted by software programming to form a control instruction with a key; Step 2: According to the method provided by the present invention, the main communication mode is selected, and the required distance between the avionics equipment and the remote communication terminal is manually sent through the serial communication software; the stability information of various communication modes required needs to be scanned and obtained in the form of information sending and receipt. The specific method is that the communication module connected to the remote control terminal sends preset fixed instructions to the avionics equipment through WIFI, Bluetooth, and LORA respectively, which is defined as binary "01010011" here. Each communication mode sends a total of 100 such instructions, and the communication module connected to the avionics equipment returns the fixed instructions upon receiving them; the correctness and success rate of the returned data of the 100 pieces of information are counted as the communication stability criterion; and then a communication mode is selected as the main communication mode in combination with the distance information; Step 3: The control instruction with the key in step 1 is sent to the main communication method determined in step 2.

[0042] Then there is the signal conversion submodule, which includes three communication modes: WIFI, Bluetooth and LORA. The widely used module design is selected and implemented. This embodiment selects the following: Yutai UT-9061: supports RS232 / 485 / 422 to WIFI, which can realize the connection between serial port devices and wireless networks; Lanqi WF610PRO: A RS232 wireless serial port Bluetooth adapter, using SPP / BLE dual-mode Bluetooth module to meet different Bluetooth communication needs; Huilidedite RS232 to lora wireless serial port transceiver module: the communication distance can reach 1000 meters, supports RS232 / 485 / 422 to wireless LORA serial port, suitable for wireless data transmission with certain requirements on transmission distance.

[0043] Embodiment 1 above provides a description of the specific implementation of the plug-and-play avionics equipment remote control device. In order to more clearly illustrate the method of the present invention when applied, embodiment 2 is given below.

[0044] Embodiment 2:

[0045] When the invented plug-and-play avionics equipment remote operation method is actually applied, the following steps need to be followed to perform settings and preparations before the operation.

[0046] First, make hardware connections. Physically connect the two communication modules to the avionics equipment and the selected remote operation terminal (taking a laptop as an example). During the connection process, carefully check whether each connection interface is stable to ensure that the connection is firm and reliable to avoid problems such as loose connection and poor contact that affect subsequent data transmission and operation.

[0047] Secondly, after completing the physical connection, turn on the avionics equipment, remote operation terminal and communication module in turn. After each device is turned on, it will automatically enter the self-test and initialization process. The avionics equipment will detect its own hardware components and software systems to ensure that each functional module is in a normal standby state. For example: the flight management system equipment will check whether its navigation calculation module, sensor interface module, etc. are working properly; the remote operation terminal (laptop) will start the operating system and load the relevant driver and the user interface software required by the present invention, that is, the serial communication software (XCOM 2.6); the communication module will also self-check its internal signal conversion submodule, signal selection submodule, encryption submodule, etc. to ensure that each submodule can operate normally.

[0048] The workflow of this method is shown in the Appendix Figure 3 ,In order to explain this method more clearly, a specific avionics equipment remote ,operation scenario is taken as an example to elaborate the complete implementation ,process of this method.

[0049] Suppose an aircraft is parked on a large apron and needs to perform a system upgrade on some of its avionics equipment (such as flight management system equipment) and obtain the operating status data of the current equipment. The operator is located in a control room about 30 meters away from the aircraft and uses a laptop computer with the corresponding user interface software installed as a remote operation terminal.

[0050] Communication mode scanning and parameter acquisition: The operator starts the user interface software on the laptop, and the software automatically triggers the communication module to start scanning the surrounding connectable communication modes (WIFI, Bluetooth and LORA). Through the scanning method, it is obtained that the communication stability of the three communication modes is 100%, and the comprehensive transmission distance is 30 meters. WIF is selected as the main communication mode.

[0051] Remote operation command sending and data interaction process: The operator first sets the aircraft registration number, ICAO address and avionics equipment serial number of the current aircraft through the serial communication software on the laptop. After the setting is completed, click "System Upgrade" to send the above information to the communication module through the RS232 serial port; after receiving it, the communication module encrypts it (the current time is acquired in real time) and forms a key control command. Assuming that the aircraft registration number is "ABC123", the ICAO address is "780621" (octal), the avionics equipment serial number is "789DEF" and the current time is "2024-12-1810:00:00", according to the key generation steps described above, first splice this information into a string "ABC12378062189DEF2024-12-18 10:00:00" in the established order; then use SHA-256 The hash function performs a hash operation on the concatenated string to obtain a binary hash value; finally, the generated binary hash value is truncated from front to back to a length that meets the requirements of the AES algorithm (128 bits are selected here, and the length is determined according to the actual security requirements and the AES algorithm configuration), and the key-carrying instruction is sent to the communication module connected to the avionics equipment through the main communication mode WIFI;

[0052] Finally, after receiving the command, the student module connected to the avionics equipment will perform a verification. If the verification passes, the original control command will be sent to the avionics equipment. Otherwise, fault processing will be performed, the fault will be recorded and sent back to the remote control terminal.

[0053] Through the above detailed description of the implementation process, under different types of avionics equipment and different distance ranges, the basic process and method of this embodiment can be referred to, and the device and method of the present invention can be flexibly used to realize the remote operation function of avionics equipment, and the relevant parameters and rules (distance range division, stability judgment index of communication mode switching, etc.) can be reasonably adjusted according to actual conditions to achieve the best operation effect and data transmission stability.

Claims

1. A plug-and-play avionics remote control device, characterized in that: Includes the following components: Component 1: 1 remote operation terminal, which is a PC, laptop or tablet computer with user interface software, connected to the avionics equipment by wireless communication through an external communication module, wherein the wireless communication mode is one of the three communication modes of WIFI, Bluetooth and LORA, and is selected by the signal selection submodule in the communication module; Component 2: 2 communication modules, located in the data transmission link between the avionic equipment and the remote operation terminal, whose function is to realize the data transmission between the avionic equipment and the remote operation device safely and reliably; one communication module is connected to the avionic equipment, and the other communication module is connected to the remote communication terminal; the communication module includes a signal conversion submodule, a signal selection submodule and an encryption submodule, wherein the signal conversion submodule converts the data in the serial port format into one of the wireless communication modes of WIFI, Bluetooth or LORA, and uses the wireless communication mode as the main communication mode; the signal selection submodule makes a selection according to the signal strength, communication stability and distance between the avionic equipment and the remote operation terminal, according to the preset automatic selection rules; the encryption submodule is implemented by a hardware encryption chip or software programming, and encrypts the transmission data in real time based on the AES algorithm integrating the aviation identification information.

2. The device according to claim 1, characterized in that The preset automatic selection rule is specifically as follows: first, the communication stability of each communication mode (WIFI, Bluetooth and LORA) is detected, and the method is that the two communication modules mutually transmit fixed command information, and when the information accumulates to a set threshold, the communication accuracy is calculated, and the communication mode with the highest accuracy is selected; when the accuracy is the same, the selection is made in combination with the transmission distance, if it is in a short distance range, Bluetooth is selected, WIFI is selected for a medium distance range, and LORA is selected for a long distance range; through the above method, a communication mode is finally determined as the main communication mode; the short distance range is 0-10 meters, the medium distance range is 10-50 meters, and the long distance range is greater than 50 meters, and the implementation is adjusted according to the effect in the actual application environment.

3. The device according to claim 1, characterized in that The AES algorithm based on the integration of aviation identification information uses the aircraft registration number, ICAO address, avionics serial number and current time to generate the key. The specific steps are as follows: S1: concatenate the above information aircraft registration number, ICAO address, avionics serial number and current time into a string; S2: Use a hash function to perform a hash operation on the concatenated string to generate a binary hash value; S3: The generated binary hash value is truncated into an AES key in a front-to-back manner.

4. A plug-and-play avionics remote operation method, using the device described in any one of claims 1 to 3 to realize wireless data transmission between the avionics and the remote operation terminal, characterized in that: The following steps are involved: S1: Establish a wireless connection between the avionics equipment and the remote operation terminal through WIFI, Bluetooth and / or LORA wireless communication; S2: The device according to claim 2 selects one of the three communication modes of WIFI, Bluetooth and LORA described in step S1 as the main communication mode according to the preset automatic selection rule; S3: running the user interface software on the remote operation terminal, wherein the user interface software sends control instructions for startup, shutdown, data upload, data loading, system upgrade and / or fault diagnosis to the avionics equipment through the communication module in the communication mode selected in step S2; specifically comprising the following sub-steps: S31: The control instruction is encrypted in the encryption processing submodule of the communication module to obtain an AES key; S32: attach the AES key in S31 to the control instruction to form a key-carrying instruction; S33: sending a key-carrying instruction to the avionics equipment according to the communication method selected in step S2; S4: The communication module connected to the avionics equipment receives the key instruction sent in step S33 and processes it according to the following specific steps: S41: performing a key consistency check in the encryption submodule by removing the AES key from the key-carrying instruction, obtaining the original control instruction, recalculating the AES key, and comparing it with the AES key carried by the key-carrying instruction. If they are the same, the check passes and the process proceeds to step S42; otherwise, the check fails and the process proceeds to step S43; S42: sending the original control instruction obtained in step S41 to the avionics system for processing; S43: The communication module records the verification failure information and transmits it back to the remote control terminal.

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