Airplane airborne data acquisition and recording system based on SD card interface

Abstract

The utility model provides an aircraft airborne data acquisition and recording system based on an SD card interface, which relates to the field of aircraft information processing, comprises a data acquisition and transmission module and a portable data cache terminal, and has the beneficial effects that the data acquisition and transmission module replaces a traditional SD card and is used for storing flight parameters; according to the invention, real-time acquisition and automatic transmission of the flight parameters of the airplane are realized without manually plugging and unplugging an SD card, the real-time performance and reliability of flight parameter acquisition are improved, errors possibly caused by manual operation are avoided, and the practical value is very high. Meanwhile, the data caching terminal is portable mobile equipment, special data storage and wireless transmission equipment are not needed, and the system has extremely high economical efficiency and feasibility.

Description

Technical Field

[0001] The utility model relates to the field of aircraft information processing, in particular to an aircraft airborne data acquisition and recording system based on an SD card interface. Background Art

[0002] Flight safety has always been a major issue in the aviation industry. While the civil aviation industry has experienced rapid growth in recent years, the accident rate has continued to rise. Further reducing the accident rate has become a major challenge facing the aviation industry and governments worldwide. Research has shown that flight data analysis can identify safety hazards such as substandard operations, flawed procedures, and aircraft performance degradation at an early stage, providing data and information to support the development and implementation of corrective measures. Furthermore, flight data analysis can be used to assess the flying skills of pilots and flight trainees, helping them improve their skills.

[0003] In existing related technologies, airborne data transmission is mainly achieved by means of high-throughput communication satellites, communication base stations or dedicated data terminals, for example:

[0004] The document with patent application number 202311362407.4 discloses an airborne data acquisition system, which first uses an airborne data acquisition module installed inside the aircraft to collect airborne data generated by the aircraft during flight; then, it uses a high-throughput communication satellite to receive the airborne data; finally, it uses a ground server to receive the airborne data from the high-throughput communication satellite, decodes the airborne data to determine the corresponding engineering value, and associates and stores the aircraft identification information, airborne data, and engineering value corresponding to the airborne data. This method can collect and transmit airborne data in real time based on high-throughput satellites without waiting for the aircraft to land, avoiding the situation where flight record data cannot be obtained due to aircraft accidents. However, this system is very complex and costly, and is not suitable for some small and medium-sized civil aviation companies and flight schools.

[0005] The document with patent application number 202122943727.1 discloses a communication system for monitoring training aircraft, which includes an airborne terminal, a communication base station, an ADS-B module and a management platform. The airborne terminal includes a data acquisition module and a wireless communication module. The data acquisition module is responsible for acquiring the flight data of the training aircraft. The wireless communication module is responsible for sending the flight data to the communication base station, and the communication base station sends the flight data to the management platform. The ADS-B module is used to receive the status monitoring signal output by civil aviation-grade airborne equipment, and transmit the status monitoring signal to the management platform through the communication base station. Although this method can achieve continuous monitoring of the training aircraft during flight and continuous monitoring of factors affecting the flight of the training aircraft, it requires the construction of a communication base station and the use of a high-power wireless communication module, and still has shortcomings in terms of economy.

[0006] The document with patent application number 202021430081.6 discloses a general aviation aircraft black box, including a communication component and a host component. The host component is used for collecting and sending flight data, and the communication component is used to provide network access for the host component through multiple communication channels, and is responsible for transmitting flight data to the management platform. The cloud black box also includes a sound card component and a battery-powered component. This method mainly uploads data to the management platform through a cellular network or satellite communication, and has high data transmission reliability. In fact, the black box and flight data acquisition platform have been integrated on the aircraft. The cloud black box is equivalent to an additional set of flight data acquisition platforms. There is overlap in the functions of the two, resulting in insufficient economy and high subsequent maintenance costs.

[0007] The document with patent application number 202120110725.1 discloses an airborne SD card data wireless transmission device, including a processing control module, an SD card interface module, a wireless transmission module, a display module and a power module. Among them, the SD card interface module includes a card socket for connecting the general aviation aircraft onboard SD card. The operator needs to manually unplug the general aviation aircraft onboard SD card and insert it into the card socket of the SD card interface module to realize the wireless transmission of flight parameters on the specified date. Although this method effectively solves the problems of manual export of airborne SD card flight parameter data, which easily leads to poor timeliness and error in subsequent data processing and analysis, there are still steps that require manual operation. Utility Model Content

[0008] The purpose of this utility model is to solve the problem that the existing airborne data acquisition system is complex and costly. The utility model provides an aircraft airborne data acquisition and recording system based on the SD card interface. The system includes a data acquisition and transmission module and a data buffer terminal.

[0009] Furthermore, the data acquisition and transmission module has the same appearance as a standard airborne SD card and is inserted into the SD card holder of the airborne navigation map device when in use to obtain airborne data and power supply for the data acquisition and transmission module.

[0010] Furthermore, the data acquisition and transmission module consists of an SD NAND storage circuit, an isolation circuit, an FPGA circuit, and a data transmission circuit;

[0011] SD NAND storage circuit is used for onboard data storage;

[0012] The isolation circuit is set between the SD card bus and the FPGA circuit to block the interference of the FPGA circuit on the SD bus;

[0013] The FPGA circuit is used to collect and analyze the onboard data on the SD card bus in real time;

[0014] The data transmission circuit is connected to the FPGA circuit and is used for transmitting the airborne data collected by the FPGA circuit in real time to the data cache terminal.

[0015] Furthermore, the SD card bus is composed of the SD card interface and the SD NAND storage circuit and the connection between the two.

[0016] Furthermore, the FPGA circuit is an SD card slave circuit, supports SDIO and SPI communication protocols and can automatically determine the protocol of the SD card interface.

[0017] Furthermore, the sending circuit is any one or a combination of three communication modes: USB, Bluetooth and WIFI communication.

[0018] Furthermore, the data cache terminal is a portable mobile device, which is provided with USB, Bluetooth and WIFI communication terminals for establishing a connection with the data acquisition and transmission module and receiving data from the data acquisition and transmission module.

[0019] Furthermore, the data cache terminal is installed with data processing and analysis software for receiving, decoding, storing and automatically uploading airborne data, and the air traffic control automation system or the aircraft data processing subsystem can be selected.

[0020] Furthermore, the specific steps of the system are:

[0021] S1. When the aircraft starts, the data acquisition and transmission module is powered and initialized, and begins to collect and process airborne data in real time. Specifically:

[0022] The airborne data is stored through the SD NAND storage circuit. At the same time, the FPGA circuit collects the airborne data on the SD card bus in real time and analyzes the real-time recorded data according to the protocol of the SD card interface. The analyzed real-time airborne data is transmitted to the sending circuit.

[0023] S2. The data cache terminal carried by the aircraft pilot establishes a connection with the data acquisition and transmission module. After the connection is established, the data cache terminal receives and processes the recorded data from the data acquisition and transmission module in real time. The specific process is as follows:

[0024] When establishing a connection, the data cache terminal and the data acquisition and transmission module establish a connection through the communication terminal.

[0025] After the connection is established, the sending circuit in the data acquisition and transmission module sends the parsed real-time airborne data to the data cache terminal. The data processing and analysis software in the data cache terminal receives and decodes the parsed real-time airborne data from the data acquisition and transmission module in real time, obtains visual airborne data, and stores it in the local memory of the data cache terminal.

[0026] S3. After the aircraft lands, the data cache terminal automatically establishes a connection with the remote server after connecting to the Internet, and uploads the locally recorded visualized airborne data to the remote server.

[0027] Furthermore, the decoded real-time airborne data uploaded to the remote server will be stored by the remote server in association with the aircraft identification information, airborne data, flight time, flight location and pilot corresponding to the aircraft.

[0028] The technical solution provided by this utility model has the following beneficial effects: It proposes an aircraft onboard data acquisition and recording system based on an SD card interface. The data acquisition and transmission module replaces the traditional SD card for flight parameter storage, enabling real-time acquisition and automated transmission of aircraft flight parameters without the need for manual insertion and removal of the SD card. This improves the real-time and reliability of flight parameter acquisition, avoids errors that may occur during manual operation, and has high practical value. Furthermore, the data cache terminal is a portable mobile device that does not require dedicated data storage and wireless transmission equipment, making it highly economical and feasible. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0030] Figure 1 This is a schematic diagram of an aircraft airborne data acquisition and recording system based on an SD card interface in an embodiment of the present utility model;

[0031] Figure 2 It is a schematic diagram of the circuit principle of the data acquisition module in the embodiment of the utility model;

[0032] Figure 3 This is a schematic diagram of the circuit appearance of the acquisition module in the embodiment of the utility model;

[0033] Figure 4 This is a schematic diagram of the operation of an aircraft onboard data acquisition and recording system based on an SD card interface in an embodiment of the present utility model. DETAILED DESCRIPTION

[0034] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings.

[0035] The embodiment of the utility model provides an aircraft airborne data acquisition and recording system based on an SD card interface.

[0036] See Figure 1 , Figure 14 is a schematic diagram of an aircraft airborne data acquisition and recording system based on an SD card interface according to an embodiment of the present invention. The system includes a data acquisition module 401 and a portable data buffer terminal 402 .

[0037] The data acquisition module 401 mainly collects airborne data from the aircraft's airborne data SD card holder through the SD card interface, and transmits the airborne data to the portable data buffer terminal 402 through the Bluetooth / WIFI / USB communication interface.

[0038] The data acquisition and transmission module has the same appearance as a standard airborne SD card. When in use, it is inserted into the SD card holder of the airborne navigation map device to obtain airborne data and supply power to the data acquisition and transmission module.

[0039] The portable data caching terminal 402 mainly realizes the functions of receiving, processing, caching and uploading the onboard data to the remote server. The portable data caching terminal 402 does not require a dedicated device and can be realized by using a mobile phone, tablet computer or notebook used in daily life.

[0040] The data processing and analysis software is installed on the portable data caching terminal, and is mainly used to receive, analyze, process, store and forward airborne data to a remote server. The data processing and analysis software also has the functions of automatically searching for and connecting to the designated data acquisition module 401 via Bluetooth / WIFI / USB, automatically connecting to the airport server via the Internet and automatically uploading data.

[0041] Please refer to Figure 2 , Figure 2 20 is a schematic diagram of the circuit principle of the data acquisition module in the embodiment of the present invention. The data acquisition and transmission module is composed of an SD NAND storage circuit 201, an isolation circuit 202, an FPGA circuit 203 and a data transmission circuit 204.

[0042] The data storage function of the SD card interface of the SD NAND storage circuit 201 provides a way for the normal storage of aircraft onboard parameters and is used for the storage of onboard data.

[0043] The isolation circuit 202 is set between the SD card bus and the FPGA circuit to block the interference of the FPGA circuit on the SD bus and realize the one-way reading of the SD bus data. The SD card interface and the SD NAND storage circuit and the connection between the two together constitute the SD card bus.

[0044] The FPGA circuit 203 is used to collect and analyze the airborne data on the SD card bus in real time. It is an SD card slave circuit that supports SDIO and SPI communication protocols and can automatically determine the protocol of the SD card interface.

[0045] The data transmission circuit 204 is connected to the FPGA circuit 203 and is used to transmit the onboard data collected by the FPGA circuit in real time to the data cache terminal, using any one or a combination of the three communication modes of USB, Bluetooth and WIFI.

[0046] Please refer to Figure 3 , Figure 3 This is a schematic diagram of the data acquisition module in an embodiment of the present invention. The module's appearance is consistent with a standard onboard SD card, making it a convenient replacement for a standard onboard SD card to acquire onboard data and power the data acquisition and transmission module. The components are numbered and labeled as follows: SD NAND circuit 301, isolation and FPGA circuit 302, data transmission circuit 303, standard SD card housing 304, and SD card interface gold finger 305.

[0047] The data cache terminal is a portable mobile device equipped with a communication terminal with a corresponding sending circuit. It is used to establish a connection with the data acquisition and transmission module and receive data from the data acquisition and transmission module. It can be a portable mobile phone, tablet computer or laptop computer, and there is no need to develop dedicated data storage and data transmission equipment.

[0048] Please refer to Figure 4 , Figure 4 This is a schematic diagram of the operation of an aircraft airborne data acquisition and recording system based on an SD card interface in an embodiment of the present invention. The specific steps of the system operation are:

[0049] ,Step 1, when the aircraft starts, the data acquisition and transmission module is powered on and ,initialized, and begins to collect and process airborne data in real time, ,specifically:

[0050] The airborne data is stored through the SD NAND storage circuit. At the same time, the FPGA circuit collects the airborne data on the SD card bus in real time and analyzes the real-time recorded data according to the protocol of the SD card interface. The analyzed real-time airborne data is transmitted to the sending circuit.

[0051] Step 2: The data cache terminal carried by the aircraft pilot establishes a connection with the data acquisition and transmission module. After the connection is established, the data cache terminal receives and processes the recorded data from the data acquisition and transmission module in real time. The specific process is as follows:

[0052] When establishing a connection, the data cache terminal and the data acquisition and transmission module establish a connection through the communication terminal.

[0053] After the connection is established, the sending circuit in the data acquisition and transmission module sends the parsed real-time airborne data to the data cache terminal. The data processing and analysis software in the data cache terminal receives and decodes the parsed real-time airborne data from the data acquisition and transmission module in real time, obtains visual airborne data, and stores it in the local memory of the data cache terminal.

[0054] Optionally, the data caching terminal and the data acquisition and transmission module communicate via a USB interface, with the operator manually connecting the USB cable. The data acquisition and transmission module supports configuration of a unique device name or MAC address associated with the aircraft serial number. The data processing and analysis software running on the data caching terminal supports specifying the name or MAC address of the connected data acquisition and transmission module, automatically and accurately pairing and connecting the two.

[0055] Step 3: After the plane lands, the data cache terminal automatically establishes a connection with the remote server after connecting to the Internet, and uploads the locally recorded visual airborne data to the remote server.

[0056] The remote server associates and stores the visualized airborne data with the aircraft identification information, airborne data, flight time, flight location and pilot corresponding to the aircraft.

[0057] The beneficial effects of this utility model are as follows: It proposes an aircraft onboard data acquisition and recording system based on an SD card interface. The data acquisition and transmission module replaces the traditional SD card for flight parameter storage, achieving real-time acquisition and automated transmission of aircraft flight parameters without the need for manual insertion and removal of the SD card. This improves the real-time and reliability of flight parameter acquisition, avoids errors that may occur during manual operation, and has high practical value. Furthermore, the data cache terminal is a portable mobile device that does not require dedicated data storage and wireless transmission equipment, making it extremely economical and feasible.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An aircraft airborne data acquisition and recording system based on an SD card interface, characterized in that: It includes a data acquisition and transmission module and a portable data cache terminal.

2. The aircraft airborne data acquisition and recording system based on the SD card interface according to claim 1, characterized in that: The data acquisition and transmission module has the same appearance as a standard airborne SD card and is inserted into the SD card holder of the airborne navigation map device when in use to obtain airborne data and power supply for the data acquisition and transmission module.

3. The aircraft airborne data acquisition and recording system based on the SD card interface according to claim 2, characterized in that: The data acquisition and transmission module consists of an SD NAND storage circuit, an isolation circuit, an FPGA circuit and a data transmission circuit; The SD NAND storage circuit is used for storing onboard data; The isolation circuit is arranged between the SD card bus and the FPGA circuit to block the interference of the FPGA circuit on the SD bus; The FPGA circuit is used to collect and analyze the airborne data on the SD card bus in real time; The data transmission circuit is connected to the FPGA circuit and is used to transmit the airborne data collected by the FPGA circuit in real time to the data cache terminal.

4. The aircraft airborne data acquisition and recording system based on the SD card interface according to claim 3, characterized in that: The SD card bus is composed of an SD card interface, an SD NAND storage circuit, and the connection between the two.

5. The aircraft airborne data acquisition and recording system based on the SD card interface according to claim 4, characterized in that: The FPGA circuit is an SD card slave circuit, supports SDIO and SPI communication protocols and can automatically determine the protocol of the SD card interface.

6. The aircraft airborne data acquisition and recording system based on the SD card interface according to claim 5, characterized in that: The sending circuit adopts any one or combination of three communication modes: USB, Bluetooth and WIFI communication.

7. The aircraft airborne data acquisition and recording system based on the SD card interface according to claim 6, characterized in that: The data cache terminal is a portable mobile device, provided with a communication terminal corresponding to the sending circuit, and is used to establish a connection with the data acquisition and transmission module and receive data from the data acquisition and transmission module.

8. The aircraft airborne data acquisition and recording system based on the SD card interface according to claim 7, characterized in that: The data cache terminal is installed with data processing and analysis software.

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