CN114415626A - Modular aviation data test system and test method thereof - Google Patents
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Abstract
The invention provides a modularized aviation data test system and a test method thereof. The system of the invention isolates the specific physical communication interfaces, and can simultaneously use a plurality of interfaces for communication. The invention separates ICD change, and can modify ICD data at any time without modifying software code. The invention analyzes the received data and displays the data through the interface, so that various devices can be conveniently tested. The modular aviation data testing method comprises the steps of generating data values by using a data generator, endowing the data values with variables in ICD configuration, sending the variables to an unpacking group for packing, sending out data through data communication, storing the data after receiving the data sent by the data communication, and displaying the data.
Description
Technical Field
The invention relates to the technical field of civil aviation, in particular to a modular aviation data testing system and a testing method thereof.
Background
Integrated avionics systems are an important component of modern aircraft. Early aircraft systems, including aeronautical instruments, radios, radar, navigation, etc., were independent and were largely mechanical. In recent decades, under the promotion of demand guidance and technical development, the integrated avionics system gradually replaces various mechanical devices and develops towards integration, modularization and intellectualization. With the development of the integrated avionics system, the cross-linking relationship of Interface Control Document (ICD) of various devices in the system is increasingly compact and complex, and how to accurately and efficiently test each ICD in the system becomes an urgent problem to be solved.
Traditional ICD data testing is divided into two categories: the first mode is a universal test tool, which can transmit and receive data on a byte stream layer aiming at a serial port or a network port and can communicate with various types of equipment, but the transmitted and received data are all in a byte stream form, so that the data are difficult to modify and read, and can only communicate with one equipment at the same time, so that the test requirements of multiple equipment cannot be met; the second mode is to develop a corresponding upper computer for specific equipment, and the mode provides a human-computer interaction interface and logically analyzes the received and transmitted data, so that the received and transmitted data is convenient to observe and modify. But since it is developed for each device individually, modifications to the software are required as soon as an ICD changes or a new ICD is accessed. This greatly reduces the scope and flexibility of the software, and also increases the project development cycle and increases the project cost.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the modularized aviation data testing system which is wide in application range, high in flexibility, accurate in testing and high in efficiency. The modular aviation data test system is more visual in data observation and result, can observe test data in multiple dimensions, has multiple communication interfaces and visual interfaces, and can be simultaneously communicated with equipment with different interfaces.
In order to achieve the purpose, the invention provides the following technical scheme: a modularized aviation data test system comprises a communication module, a data receiving module, an unpacking and packaging module, a data excitation module and an ICD configuration module;
the communication module is used for providing a uniform data receiving and sending interface;
the data receiving module is used for receiving the data unpacked by the unpacking and packing module and displaying and storing the unpacked data;
the unpacking and packing module is used for completing the conversion from the byte stream to an ICD variable value or from the ICD variable value to the byte stream;
the data excitation module is used for generating excitation data, simulating real equipment to send data and driving the aviation data test system to operate;
the ICD configuration module is used for inputting and configuring ICD data.
According to the preferable technical scheme, the communication module comprises a physical communication channel, and the physical communication channel comprises an ARINC429 communication board card, a serial port and a network port; the ARINC429 communication board card is used for carrying out data communication with equipment adopting an ARINC429 protocol; the serial port is used for communication by adopting equipment of the serial port; the network port is used for communication by adopting equipment of the network port.
In an optimal technical scheme, the communication module receives and sends data in a byte stream format, and has a configuration interface for binding a corresponding ICD and a corresponding physical communication channel.
In the preferred technical scheme, the communication module adopts a plug-in architecture, and the plug-in architecture adopts a dynamic link library mode to manage all plug-in interfaces through an XML configuration file.
In a preferred technical scheme, the ICD configuration module comprises a table configuration data module, a text configuration data module, an ICD management tree, a data import module and a data export module; the table configuration data module is used for adding or deleting ICD data in a table form, and the text configuration data module is used for adding or deleting ICD data in a text form; the ICD data comprises variable names, variable types, byte offsets, byte lengths, variable display formats, upper limits and lower limits, wherein the variable types comprise signed integers, unsigned integers, floating point numbers, character strings, enumeration, packet headers, packet lengths, verification and CRC; the ICD management tree is used for managing ICD data in a tree structure; the data export module is used for exporting data, and the exported data format is an XML format text file; the data import module can be used for importing the data exported by the data export module.
According to the preferred technical scheme, the data receiving module comprises a table display module, a graphical interface display module and a historical data storage module; the table display module is used for displaying the analyzed data in a table form; and the graphical interface display module is used for displaying the analyzed data in a control form.
In a preferred technical scheme, the historical data storage module is used for storing received original byte stream data or analyzed data; the data format stored by the historical data storage module is a text format or a binary format.
In the preferred technical scheme, the data excitation module is further used for providing data forwarding and fault injection by the module; the data stimulus module comprises a data generator module; the data generator module is used for generating data, endowing the generated data with variables in the ICD data, packing the data by the unpacking and packing module, and sending the packed data through the communication module.
According to the preferable technical scheme, the data generator module comprises a sine curve change data generator, a cosine curve change data generator, a straight line change data generator, a longitude and latitude position change data generator and a flight attitude change data generator; the sine curve change data generator adopts an X axis as time and a Y axis as a value of given amplitude, and the generated data is subjected to sine curve change along with the time; the cosine curve change data generator adopts an X axis as time and a Y axis as a value of given amplitude, and the generated data changes a cosine curve along with the time; the linear change data generator adopts an X axis as time, generates a Y value according to a given linear equation, and generates data which linearly changes along with the time; the latitude and longitude position change data generator adopts an X axis as time, the generated data changes along with a given airway, and a latitude and longitude value of the current airplane is output; the flight attitude change data generator adopts an X axis as time, the generated data changes according to a given route, and the pitch, roll and yaw values of the current airplane are output.
Still another object of the present invention is to provide a modular airborne data testing method, which includes the following steps:
data excitation, namely generating a data value by using a data generator, endowing the data value with a variable in ICD configuration, sending the variable to an unpacking group for packing, then sending out data through data communication, and storing and displaying the data after receiving the data sent by the data communication;
the data excitation is to simulate ICD protocols of various real devices to perform packet transmission, forward data and perform fault injection at the same time;
the ICD is configured to input and configure ICD data in a text or table mode;
data communication is to abstract and isolate a physical communication interface, and to receive data or transmit data from a uniform interface in a byte stream format;
unpacking and packing are to convert the byte stream data into ICD variable values or convert the ICD variable values into byte stream data.
Compared with the prior art, the invention has the beneficial effects that:
the invention can isolate the specific physical communication interfaces and can simultaneously use a plurality of interfaces for communication. The invention separates ICD change, and can modify ICD data at any time without modifying software code. The invention analyzes the received data and displays the data through the interface, so that various devices can be conveniently tested.
In the invention, the communication module provides a uniform data receiving and data sending interface through the configuration interface, and the communication module adopts a plug-in architecture, so that different physical interface protocol plug-ins can be conveniently and rapidly expanded. The plug-in adopts a dynamic link library mode, manages all interface plug-ins through an XML configuration file, can be identified by the communication module as long as the specified interface is realized, and then adds the relevant information of the dynamic link library into the configuration file, thereby achieving the purpose of isolating the specific communication mode. The ICD configuration module provides two data configuration modes of form configuration and text configuration, the form configuration provides a prefabricated ICD editing interface, ICD data are input according to interface rules, the text configuration mode provides a mode similar to a code editor to input the ICD data, and the ICD data can be conveniently modified in any mode so as to be adapted to different devices. The data receiving module provides two modes of table display and interface control display to display data. The table display can conveniently observe the value of each variable in the received ICD data, the interface control display can bind the received data with the corresponding control, the change of the data can be more vividly displayed, and the two modes are combined, so that the effect of observing ICD test data in multiple directions can be achieved.
Drawings
FIG. 1 is a schematic structural diagram of a modular airborne data testing system of the present invention;
FIG. 2 is a schematic structural diagram of a communication module according to the present invention;
FIG. 3 is a schematic structural diagram of an ICD configuration module according to the present invention;
FIG. 4 is a schematic structural diagram of a data receiving module according to the present invention;
FIG. 5 is a schematic diagram of a data excitation module according to the present invention.
Detailed Description
As shown in fig. 1 to 5, a modular aviation data testing system includes a communication module, a data receiving module, an unpacking and packaging module, a data excitation module, and an ICD configuration module;
the communication module is used for providing a uniform data receiving and sending interface. The communication module comprises a physical communication channel, and the physical communication channel comprises an ARINC429 communication board card, a serial port and a network port; the ARINC429 communication board card is used for carrying out data communication with equipment adopting an ARINC429 protocol; the serial port is used for communication by adopting equipment of the serial port; the network port is used for communication by adopting equipment of the network port. The communication module receives and transmits the data in a byte stream format, and is provided with a configuration interface for binding the corresponding ICD and the corresponding physical communication channel. The communication module adopts a plug-in framework, the plug-in framework adopts a dynamic link library mode, and all plug-in interfaces are managed through an XML configuration file.
And the data receiving module is used for receiving the data unpacked by the unpacking and packing module and displaying and storing the unpacked data. The data receiving module comprises a table display module, a graphical interface display module and a historical data storage module; the table display module is used for displaying the analyzed data in a table form; and the graphical interface display module is used for displaying the analyzed data in a control form. The historical data storage module is used for storing received original byte stream data or analyzed data; the data format stored by the historical data storage module is a text format or a binary format.
And the unpacking and packing module is used for completing the conversion from the byte stream to the ICD variable value or from the ICD variable value to the byte stream.
The data excitation module is used for generating excitation data, simulating real equipment to send data and driving the aviation data testing system to operate. The data excitation module is also used for providing data forwarding and fault injection by the module; the data stimulus module comprises a data generator module; the data generator module is used for generating data, endowing the generated data with variables in the ICD data, packing the data by the unpacking and packing module, and sending the packed data through the communication module. The data generator module comprises a sine curve change data generator, a cosine curve change data generator, a straight line change data generator, a longitude and latitude position change data generator and a flight attitude change data generator; the sine curve change data generator adopts an X axis as time and a Y axis as a value of given amplitude, and the generated data is subjected to sine curve change along with the time; the cosine curve change data generator adopts an X axis as time and a Y axis as a value of given amplitude, and the generated data changes a cosine curve along with the time; the linear change data generator adopts an X axis as time, generates a Y value according to a given linear equation, and generates data which linearly changes along with the time; the latitude and longitude position change data generator adopts an X axis as time, the generated data changes along with a given airway, and a latitude and longitude value of the current airplane is output; the flight attitude change data generator adopts an X axis as time, the generated data changes according to a given route, and the pitch, roll and yaw values of the current airplane are output.
The ICD configuration module is used for inputting and configuring ICD data. The ICD configuration module comprises a table configuration data module, a text configuration data module, an ICD management tree, a data import module and a data export module; the table configuration data module is used for adding or deleting ICD data in a table form, and the text configuration data module is used for adding or deleting ICD data in a text form; the ICD data comprises variable names, variable types, byte offsets, byte lengths, variable display formats, upper limits and lower limits, wherein the variable types comprise signed integers, unsigned integers, floating point numbers, character strings, enumeration, packet headers, packet lengths, verification and CRC; the ICD management tree is used for managing ICD data in a tree structure; the data export module is used for exporting data, and the exported data format is an XML format text file; the data import module can be used for importing the data exported by the data export module.
The data excitation module generates a data value by using the data generator, the data value is endowed with a variable in the ICD configuration module, the variable is sent to the unpacking and packing module for packing, then the data is sent out through the communication module, and the data receiving module receives the data sent by the communication module, stores the data and displays the data.
The working principle and the testing method of the modular aviation data testing system are as follows:
as shown in fig. 1, in this embodiment, the modular aviation data testing system of the present invention includes a communication module, a data receiving module, an unpacking and packaging module, a data excitation module, and an ICD (Interface Control Document) configuration module. The communication module is responsible for isolating a specific physical communication interface and providing a uniform data receiving and sending interface; the data receiving module receives the unpacked data and then displays and stores the data; the unpacking and packing module completes the conversion from the byte stream to the ICD variable value and from the ICD variable value to the byte stream; the data excitation module generates excitation data according to a formulated rule so as to simulate real equipment to send data to drive the system to operate; the ICD configuration module inputs ICD data and provides the ICD data for other modules to use.
As shown in fig. 2, the communication module includes an ARINC429 communication board, a serial port, a network port, and other physical communication channels. The communication module further abstracts the physical communication channel and provides a uniform data receiving and data sending interface, so that the purpose of isolating a specific communication mode is achieved. The communication module is provided with a configuration interface to realize the binding of a specific ICD and a specific physical channel. The ARINC429 communication board submodule can be used for carrying out data communication with equipment adopting an ARINC429 protocol. And the device can communicate with the equipment adopting the serial port through the serial port. The network port can be used for communicating with equipment adopting the network port. The communication module is realized by adopting a plug-in structure, and different physical interface protocol plug-ins can be conveniently and rapidly expanded. The plug-in adopts a dynamic link library mode, manages all interface plug-ins through an XML configuration file, and can be identified by the communication module as long as the specified interface is realized and then the relevant information of the dynamic link library is added into the configuration file.
The invention realizes the isolation of the ICD and the physical channel by adopting a common data pool. That is, all the data received from the physical channel are transmitted to the data pool, and the ICD parsing module acquires the data from the data pool. When data received from the corresponding physical channel enters the public data pool, the data are provided with data identification of the corresponding physical channel ID; each data in the public data pool is also endowed with a corresponding ICD identification; namely, information configuration is carried out according to the data identification rule in the binding process of the physical channel. For example, first, an ICD structure used for data analysis is selected, then a physical channel used for this test is created, such as which serial ports and which internet ports are used, and then parameters required for communication of each channel are configured. The ICD is then associated with a physical channel, selecting from which physical channel the ICD structured data originates. After the configuration is completed, the unpacking and packing module extracts the data received by the corresponding channel from the public data pool according to the configuration information.
As shown in fig. 3, the ICD configuration module includes a table configuration data module, a text configuration data module, an ICD management tree, a data import module, and a data export module. The ICD configuration module provides two ICD configuration modes. The first configuration is to configure data in a table manner. The interface is provided with a display form and an adding button, a deleting button and a data adding window by clicking the adding button, and ICD data including variable names, variable types, byte offsets, byte lengths, variable display formats, upper limits and lower limits are input through preset input boxes. The variable types comprise signed integers, unsigned integers, floating point numbers, character strings, enumeration, packet headers, packet lengths, checksums and CRC. The second configuration mode is a text mode configuration data. This approach is similar to the way header files are written in programs, and constructs are directly entered in text format in edit boxes in C + + code format, in addition to which some special syntax provisions are made, such as special types of configurable variables in variable annotations, including header, packet length, checksum, CRC. And then the built-in analyzer judges whether the input is legal or not, analyzes information such as variable names, variable types, byte offsets, byte lengths and the like from the input, stores the input ICD data into a database in an internal format after the analysis is passed, and displays different parts in different colors in an input interface, so that the data composition of the ICD can be visually seen. Compared with two ICD input modes, the first mode provides a formatted interface, so that a user can understand and operate the ICD more easily, and the input is not easy to make mistakes, and the defects that the input speed is low, the input is not flexible enough, and the data type in an array form is inconvenient to process. The second mode has the disadvantages of high input speed, flexibility and variability and needs a certain learning time. Regardless of the input method, the final ICD data is stored in the database in the same format, that is, the two input methods are equivalent, the data input by the configuration data in the form can be viewed by the configuration data in the text mode, and the data input by the configuration data in the text mode can be viewed by the configuration data in the form. The ICD management tree manages ICD data in a tree structure. The root node takes a project as a unit, a grouping node can be freely added below the project node without depth limitation, and the final leaf node is an ICD node. The flexible tree organization form can meet the ICD structure requirements of various items. The data import module can import ICD data exported by the data export module, the imported data is an XML format text file, and the import and export functions facilitate the input work of the ICD data cooperatively performed by multiple people.
As shown in fig. 4, the data receiving module is composed of a table display module, a graphical interface display module, and a historical data storage module. The data receiving module receives the analyzed data from the unpacking and packing module and transmits the data to other functional modules. The table display module displays the analyzed data in a table form, and can drag one ICD data from the ICD management tree in a dragging mode for display, and can also drag a single variable of different ICD data for display. The columns shown in the table include variable names, variable types, variable lengths, received raw data, and parsed data. The data can be displayed in binary, hexadecimal, decimal format. The columns in the table can be hidden or dragged, and the modified interface format can be stored, so that the interface can be restored when software is started next time. And the graphical interface display module displays the analyzed data in a control form. The system provides a plurality of basic controls and common controls in the field of aviation for data Display, the basic controls and the common controls in the field of aviation comprise an attitude table, an airspeed table, an altimeter, a PFD (Primary Flight Display) and the like, and specific variables are bound to the controls in a dragging mode from an ICD management tree, namely the controls can be driven to operate through data. The graphical interface display module has the advantages of better display effect and more visual data observation compared with the form display module, and has the defects of more complicated data binding operation, need of customizing different display controls and reduced flexibility. The two display modes are combined, so that the aim of multi-dimensional data observation can be achieved. The historical data storage module stores the received data in various formats, and can store the received original byte stream data and the analyzed value of each variable. The file can be stored in a text format or a binary format. The stored text format file can be read by an operator, and the stored binary file can be used for data analysis and data playback.
As shown in fig. 5, the data excitation module includes a data generator, and the data generator is composed of a sine curve change data generator, a cosine curve change data generator, a straight line change data generator, a longitude and latitude position change data generator, and a flight attitude change data generator. The data excitation module uses the value generated by the data generator to endow the value to the variable in the ICD, the variable is sent to the unpacking and packing module for packing, and then the data is sent out through the communication module. The data excitation module is an important component in data testing, and can simulate ICD protocols of various real devices to perform package sending, so that the whole system is driven to operate. And the module provides data forwarding and fault injection functions. The data forwarding is to receive data through a certain physical interface, then forward the data through another physical interface, and simultaneously view the received data through a data receiving module. The function is mainly used for monitoring data on the one-to-one physical communication interfaces under the condition of not influencing the work of equipment. The fault injection is to receive data through a certain physical interface, modify the data and forward the data through another physical interface, and the function is mainly used for simulating the data when the equipment has a fault. The data generator functions to generate values for the data stimulus. The module forms a base class of the data generator through abstracting the data generation operation, and the data excitation module only depends on the base class of the data generator, so that different data generators can be conveniently and rapidly expanded. The base class of the data producer provides a unified input-output interface. The input interface receives input in the form of a character string, and the specific meaning of the input is interpreted by each specific data generator differently. The output interface provides variable names and variable types in a character string mode, and the data excitation module can bind the data generator and the ICD variables through the variable names. The generator of the sinusoidal variation data is to perform sinusoidal variation with time using the X-axis as time and the Y-axis as a value of a given amplitude. The cosine curve change data generator is used for changing the cosine curve along with time by taking the X axis as time and taking the Y axis as a value of given amplitude. The X-axis of the linear variation data generator is time, and a Y value is generated according to a given linear equation. The latitude and longitude position change data generator outputs the current latitude and longitude values according to the change of the given route by taking the X axis as time. The flight attitude change data generator takes the X axis as time, and outputs the pitch, roll and yaw values of the current airplane according to the change of a given route. The types of data generators are rich, and different data generators can be provided according to different requirements, so that rich incentive data can be provided for the data incentive module.
The present invention should be considered as limited only by the preferred embodiments of the invention, and not limited to the above embodiments, and it should be understood that any modifications, equivalents and improvements made within the spirit and principle of the invention are included in the scope of the invention.
Claims (10)
1. A modular airborne data testing system characterized by: the system comprises a communication module, a data receiving module, an unpacking and packing module, a data excitation module and an ICD configuration module;
the communication module is used for providing a uniform data receiving and sending interface;
the data receiving module is used for receiving the data unpacked by the unpacking and packing module and displaying and storing the unpacked data;
the unpacking and packing module is used for completing the conversion from the byte stream to an ICD variable value or from the ICD variable value to the byte stream;
the data excitation module is used for generating excitation data, simulating real equipment to send data and driving the aviation data test system to operate;
the ICD configuration module is used for inputting and configuring ICD data.
2. A modular airborne data testing system according to claim 1, characterised in that: the communication module comprises a physical communication channel, and the physical communication channel comprises an ARINC429 communication board card, a serial port and a network port; the ARINC429 communication board card is used for carrying out data communication with equipment adopting an ARINC429 protocol; the serial port is used for communication by adopting equipment of the serial port; the network port is used for communication by adopting equipment of the network port.
3. A modular airborne data testing system according to claim 2, characterised in that: the communication module receives and transmits the data in a byte stream format, and is provided with a configuration interface for binding the corresponding ICD and the corresponding physical communication channel.
4. A modular airborne data testing system according to claim 3, characterised in that: the communication module adopts a plug-in framework, the plug-in framework adopts a dynamic link library mode, and all plug-in interfaces are managed through an XML configuration file.
5. A modular airborne data testing system according to claim 4, characterised in that: the ICD configuration module comprises a table configuration data module, a text configuration data module, an ICD management tree, a data import module and a data export module; the table configuration data module is used for adding or deleting ICD data in a table form, and the text configuration data module is used for adding or deleting ICD data in a text form; the ICD data comprises variable names, variable types, byte offsets, byte lengths, variable display formats, upper limits and lower limits, wherein the variable types comprise signed integers, unsigned integers, floating point numbers, character strings, enumeration, packet headers, packet lengths, verification and CRC; the ICD management tree is used for managing ICD data in a tree structure; the data export module is used for exporting data, and the exported data format is an XML format text file; the data import module can be used for importing the data exported by the data export module.
6. A modular airborne data testing system according to claim 5, characterised in that: the data receiving module comprises a table display module, a graphical interface display module and a historical data storage module; the table display module is used for displaying the analyzed data in a table form; and the graphical interface display module is used for displaying the analyzed data in a control form.
7. A modular airborne data testing system according to claim 6, characterised in that: the historical data storage module is used for storing received original byte stream data or analyzed data; the data format stored by the historical data storage module is a text format or a binary format.
8. A modular airborne data testing system in accordance with claim 7, wherein: the data excitation module is also used for providing data forwarding and fault injection; the data stimulus module comprises a data generator module; the data generator module is used for generating data, endowing the generated data with variables in the ICD data, packing the data by the unpacking and packing module, and sending the packed data through the communication module.
9. A modular airborne data testing system in accordance with claim 8, wherein: the data generator module comprises a sine curve change data generator, a cosine curve change data generator, a straight line change data generator, a longitude and latitude position change data generator and a flight attitude change data generator; the sine curve change data generator adopts an X axis as time and a Y axis as a value of given amplitude, and the generated data is subjected to sine curve change along with the time; the cosine curve change data generator adopts an X axis as time and a Y axis as a value of given amplitude, and the generated data changes a cosine curve along with the time; the linear change data generator adopts an X axis as time, generates a Y value according to a given linear equation, and generates data which linearly changes along with the time; the latitude and longitude position change data generator adopts an X axis as time, the generated data changes along with a given airway, and a latitude and longitude value of the current airplane is output; the flight attitude change data generator adopts an X axis as time, the generated data changes according to a given route, and the pitch, roll and yaw values of the current airplane are output.
10. A modular aviation data testing method is characterized in that: which comprises the following steps:
data excitation, namely generating a data value by using a data generator, endowing the data value with a variable in ICD configuration, sending the variable to an unpacking group for packing, then sending out data through data communication, and storing and displaying the data after receiving the data sent by the data communication;
the data excitation is to simulate ICD protocols of various real devices to perform packet transmission, forward data and perform fault injection at the same time;
the ICD is configured to input and configure ICD data in a text or table mode;
data communication is to abstract and isolate a physical communication interface, and to receive data or transmit data from a uniform interface in a byte stream format;
unpacking and packing are to convert the byte stream data into ICD variable values or convert the ICD variable values into byte stream data.
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