CN112214498A - Method for generating airborne maintenance configuration database - Google Patents
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- CN112214498A CN112214498A CN202011213016.2A CN202011213016A CN112214498A CN 112214498 A CN112214498 A CN 112214498A CN 202011213016 A CN202011213016 A CN 202011213016A CN 112214498 A CN112214498 A CN 112214498A
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Abstract
The application provides a method for generating an onboard maintenance configuration database, which comprises the following steps: acquiring a data source file of an airplane airborne maintenance system; respectively writing the data source files into corresponding database tables according to data types to serve as initial values; according to the database table, a system tree structure, a variable tree structure and an equation tree structure are established according to the incidence relation of each data source file; acquiring parameter data in each data source file of a system tree structure, and mapping out corresponding variables of the parameter data in a variable tree structure according to the association relation; constructing a fault equation in an equation tree structure according to the corresponding variables in the variable tree structure and the logical relationship between the variables in the variable tree structure, wherein the fault equation is used for diagnosing system faults; and exporting the data information in the configured system tree structure, variable tree structure and equation tree structure to an airborne maintenance configuration database for use by each airborne function module of the airborne maintenance system.
Description
Technical Field
The invention belongs to the technical field of civil aircraft airborne maintenance systems, and particularly relates to a method for generating an airborne maintenance configuration database.
Background
The civil aircraft airborne maintenance system collects and monitors BIT data and state parameter data of aircraft systems, subsystems and member equipment by using a digital information means, maps the data into variables, constructs a fault equation through the variables and fault logic, performs fault location and fault diagnosis, implements fault isolation, and provides maintenance suggestions and reports. Because of the wide variety of airplane systems, subsystems and member devices, complex cross-linking relationship and various data types, the formed data source file has various formats (such as the formats of XML, BIN, XLS, DB, etc.).
Therefore, the conventional method for maintaining and configuring the database cannot realize the retrospective management of the data source and the parameter data; the burden of manpower is increased.
Disclosure of Invention
In order to solve the technical problem, the application provides a method for generating an airborne maintenance configuration database, which can facilitate the management of a data source; various cross-linking relationships between data sources are solved.
The application provides a method for generating an onboard maintenance configuration database, which comprises the following steps:
acquiring a data source file of an airplane airborne maintenance system, wherein the data source file comprises data source files in various formats;
respectively writing the data source files into corresponding database tables according to data types to serve as initial values;
according to the database table, a system tree structure, a variable tree structure and an equation tree structure are established according to the incidence relation of each data source file;
acquiring parameter data in each data source file of a system tree structure, and mapping out corresponding variables of the parameter data in a variable tree structure according to the association relation;
constructing a fault equation in an equation tree structure according to the corresponding variables in the variable tree structure and the logical relationship between the variables in the variable tree structure, wherein the fault equation is used for diagnosing system faults;
and exporting the data information in the configured system tree structure, variable tree structure and equation tree structure to an airborne maintenance configuration database for use by each airborne function module of the airborne maintenance system.
Preferably, after the data information is exported to the onboard maintenance configuration database, the method further comprises:
and each airborne functional module of the airborne maintenance system obtains the required data information by reading the airborne maintenance configuration database, so as to realize the function of each airborne functional module.
Preferably, the database table includes an SQL database table and an ACCESS database table.
Preferably, the onboard maintenance configuration database includes a SQLITE database and an ACCESS database.
Preferably, the database tables include an aircraft system information table, a subsystem information table, a linear replaceable unit information table, and a bus information table.
Preferably, the format of the data source file includes an XML format file, an XLS format file, a BIN format file, and an MDB format file.
Preferably, the logical relationship between the database tables is established by using the foreign key access technology in the database tables.
Preferably, the parameters on the system tree structure are compared with a preset threshold value to generate a boolean expression, and variables in the variable tree structure are formed.
In summary, the present application provides a method for generating an airborne maintenance configuration database, which supports complex data types and data structures; the data sources are uniformly managed through the tree structure of the special tool software, the specific sources and the hierarchical relation of the parameter data are determined, and the management of the data sources is facilitated; various cross-linking relations among data sources are solved; the retrospective management of data sources and parameter data is realized; the data import and data export functions of the special tool software replace a large amount of manual input operation, so that the labor burden is reduced, and the automatic labor of the machine is realized; and finally, generating an airborne maintenance configuration database for each airborne functional module of the airborne maintenance system.
Drawings
Fig. 1 is a schematic diagram of a method for generating an onboard maintenance configuration database according to the present invention.
Detailed Description
The application provides a flexible and controllable method for generating an airborne maintenance configuration database, which is used for solving the problems of importing, storing, configuring, associating, managing and exporting of a plurality of formats of data sources at the front end of civil aircraft airborne maintenance system software and finally generating an airborne configuration database file with a uniform data format. The use of the method requires specialized tool software. The user uses the data import function in the special tool software to write all the data into the SQL database table as an initial value, manages all the data sources in a layering way through the tree structure of the special tool software, and establishes the incidence relation among all the data sources. And acquiring parameter data in each data source by special tool software, mapping variables corresponding to the parameters, and constructing a fault equation according to the logic relationship among the variables. All information such as data sources, parameters, fault equations and the like is stored in the SQLITE configuration database through the export function of the tool software, each airborne functional module of the airborne maintenance system accesses a specific table in the SQLITE configuration database by using SQL language to acquire required information, the required information is used by an analysis program of the airborne functional module to carry out fault positioning and fault diagnosis, implement fault isolation and give maintenance suggestions and reports.
The invention establishes a set of flexible and controllable method for generating an airborne maintenance configuration database aiming at a civil aircraft airborne maintenance system, and a user completes configuration activities of data sources in various formats by means of special tool software and generates database files used by airborne functional software of the airborne maintenance system. As shown in fig. 1, the specific implementation of the present invention is as follows:
a. acquiring an external data source file required by an airborne maintenance system;
b. aiming at external data source files in various forms, different data import modes are selected from special tool software, different data configuration structures are established, the configuration structures comprise data sources and various parameter data (for example, the data come from a certain aircraft system, a subsystem, a linear replaceable unit, a bus, a Label and a Label domain, or come from a certain aircraft system, a subsystem, a linear replaceable unit, a message and a message domain), and the configuration data serve as important basis for use of airborne maintenance system software. Writing the configuration data into a SQLITE database;
c. setting specific attributes (including attributes belonging to a certain data source, parameter name, parameter description, parameter data type, parameter unit, parameter threshold, parameter maximum range, parameter minimum range, parameter sampling frequency, parameter use mode, trigger mode and the like) of each parameter by using special tool software, creating a tree structure of parameter membership, and solving the association relationship between parameter data;
d. mapping the parameter data into parameter variables complying with naming rules according to the parameter data types;
e. constructing a fault equation consisting of parameter variables according to the fault logic;
f. setting fault equation attributes (such as fault types, fault information, maintenance information, troubleshooting criteria, cockpit effects and the like);
g. writing the generated and configured data information into an SQLITE database which can be identified by onboard maintenance system software by utilizing a data export function of special tool software;
h. the method comprises the following steps that airborne maintenance system software accesses an SQLITE database in a specified uniform format, reads contents in the database table by using an SQL language, and applies read data information and parameter data to analysis programs of all functional modules of the airborne software;
i. according to the read fault equation and the relevant data information, a functional module in the airborne maintenance system software makes judgment, positions the fault, judges the fault and gives a fault isolation measure;
j. the onboard maintenance system software feeds the fault information back to the special tool software, and the special tool software generates fault maintenance reports in various formats.
In summary, in order to unify these various types of data information together and output the data information into a database file in the same data storage format, the invention provides a method for flexibly and controllably generating an airborne maintenance configuration database, and a configuration generation process is completed by adopting special tool software.
Claims (8)
1. A method of generating an on-board maintenance configuration database, the method comprising:
acquiring a data source file of an airplane airborne maintenance system, wherein the data source file comprises data source files in various formats;
respectively writing the data source files into corresponding database tables according to data types to serve as initial values;
according to the database table, a system tree structure, a variable tree structure and an equation tree structure are established according to the incidence relation of each data source file;
acquiring parameter data in each data source file of a system tree structure, and mapping out corresponding variables of the parameter data in a variable tree structure according to the association relation;
constructing a fault equation in an equation tree structure according to the corresponding variables in the variable tree structure and the logical relationship between the variables in the variable tree structure, wherein the fault equation is used for diagnosing system faults;
and exporting the data information in the configured system tree structure, variable tree structure and equation tree structure to an airborne maintenance configuration database for use by each airborne function module of the airborne maintenance system.
2. The method of claim 1, wherein after the data information is exported to an onboard maintenance configuration database, the method further comprises:
and each airborne functional module of the airborne maintenance system obtains the required data information by reading the airborne maintenance configuration database, so as to realize the function of each airborne functional module.
3. The method of claim 2, wherein the database table comprises a SQL database table, an ACCESS database table.
4. The method of claim 1, wherein the onboard maintenance configuration database comprises a SQLITE database and an ACCESS database.
5. The method of claim 1, wherein the database tables include an aircraft system information table, a subsystem information table, a linear replaceable unit information table, and a bus information table.
6. The method of claim 1, wherein the format of the data source file includes an XML format file, an XLS format file, a BIN format file, and an MDB format file.
7. The method of claim 1, wherein the logical relationship between database tables is established using a foreign key access technique in the database tables.
8. The method of claim 1, wherein the parameters on the system tree structure are compared to a preset threshold to generate a boolean expression to form the variables in the variable tree structure.
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| CN202011213016.2A CN112214498B (en) | 2020-11-03 | 2020-11-03 | Method for generating airborne maintenance configuration database |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112800283A (en) * | 2021-01-29 | 2021-05-14 | 重庆恒真维实医药科技有限公司 | Method for establishing medical database based on pharmacokinetics |
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| CN112800283B (en) * | 2021-01-29 | 2023-03-14 | 重庆恒真维实医药科技有限公司 | Method for establishing medical database based on pharmacokinetics |
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