CN110706372A - Recording and processing method of Harvard data, airborne equipment and ground processing station - Google Patents
Recording and processing method of Harvard data, airborne equipment and ground processing station Download PDFInfo
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- CN110706372A CN110706372A CN201910868077.3A CN201910868077A CN110706372A CN 110706372 A CN110706372 A CN 110706372A CN 201910868077 A CN201910868077 A CN 201910868077A CN 110706372 A CN110706372 A CN 110706372A
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0841—Registering performance data
Abstract
The invention belongs to the technical field of avionics, and relates to a method for recording and processing Harvard data, airborne equipment and a ground processing station. The method is applied to an onboard device and comprises the following steps: receiving harvard code data; adding identification information into the harvard data to form identification data; the identification data is recorded.
Description
Technical Field
The invention belongs to the technical field of avionics, and relates to a method for recording and processing Harvard data, airborne equipment and a ground processing station.
Background
An ARINC717 bus (Harvard code) is a main data transmission bus for communication among products of a civil aviation passenger plane flight parameter recording system, and supports various transmission rates and subframe sizes. The flight parameter recording system can transmit data of all systems on the aircraft to the flight data recorder for recording through an ARINC717 bus, and the recorded data is downloaded, processed, analyzed and played back, so that the working condition of the equipment on the aircraft can be effectively reflected in time, single-machine monitoring or fault positioning can be rapidly completed, and the monitoring, diagnosis and work efficiency guarantee of the whole aircraft are comprehensively improved. The cross-linking system of the on-board flight parameter recording system is complex, the types, types and quantity of collected signals are large, and the change of the demand causes frequent change of data processing software, so that the research and development efficiency is low, the period is long, the cost is high, and the use of a user is influenced.
Disclosure of Invention
The purpose of the invention is as follows: the data recording and processing method based on the Harvard code is provided, and the Harvard code data can be rapidly processed and analyzed through a configuration method and visually displayed. The system development period can be shortened, the maintenance cost can be reduced, and the use by a user is facilitated.
The technical scheme of the invention is as follows:
in a first aspect, a method for recording and processing harvard data is provided, and is characterized in that the method is applied to an airborne device and comprises the following steps:
receiving harvard code data;
adding identification information into the harvard data to form identification data;
the identification data is recorded.
Optionally, the identification information includes: elapsed time, frame count word, frame length, and fault word.
In a second aspect, a method for recording and processing harvard data is provided, which is applied to a ground processing station and includes:
forming a parameter configuration file by configuring parameter types, parameter names, initial bytes, parameter lengths and sampling rates;
reading identification data recorded in airborne equipment;
preprocessing the identification data to form a temporary data file;
reading a parameter configuration file;
analyzing the temporary data file according to the parameter configuration file to obtain an engineering value file;
and outputting the engineering value in the engineering value file.
Optionally, preprocessing the identification data to form a temporary data file, specifically including:
judging the frame mark of the identification data and the length of the identification data;
in the case where the frame flag is present and the length satisfies a predetermined value, the identification data is written to the temporary data file.
Optionally, preprocessing the identification data to form a temporary data file, specifically including:
and preprocessing the identification data frame by frame to form a temporary data file.
Optionally, the analyzing the temporary data file according to the parameter configuration file to obtain an engineering value file specifically includes:
and analyzing the temporary data file frame by frame according to the parameter configuration file to obtain an engineering value file.
Optionally, outputting the engineering values in the engineering values file comprises: and outputting the engineering value in the engineering value file in the forms of a report and a curve.
In a third aspect, an onboard apparatus is provided, which includes:
the receiving module is used for receiving the harvard data;
the loading module is used for adding identification information into the Harvard data to form identification data;
and the storage module is used for recording the identification data.
In a fourth aspect, there is provided a ground treatment station comprising:
the configuration module is used for forming a parameter configuration file by configuring the parameter type, the parameter name, the starting byte, the parameter length and the sampling rate;
the reading module is used for reading the identification data recorded in the airborne equipment and reading the parameter configuration file;
the processing module is used for preprocessing the identification data to form a temporary data file and analyzing the temporary data file according to the parameter configuration file to obtain an engineering value file;
and the output module is used for outputting the project values in the project value file.
Optionally, the processing module is specifically configured to:
judging the frame mark of the identification data and the length of the identification data frame by frame;
writing the identification data into the temporary data file frame by frame under the condition that a frame mark exists and the length meets a preset value;
and analyzing the temporary data file frame by frame according to the parameter configuration file to obtain an engineering value file.
The invention has the beneficial effects that: the invention provides a recording and processing method based on Harvard code bus data, which can be used for processing and analyzing the data quickly only by changing software configuration on a flight parameter recorder with a Harvard code bus interface under the conditions that the states of airplanes are different and ICDs of users frequently change, can improve the working efficiency in the whole development process, reduce the maintenance cost, is extremely simple and convenient to use and maintain, can be widely popularized in the aspect of application of civil aviation recording systems, and has higher economic value.
Drawings
FIG. 1 is a schematic block diagram of a Harvard code bus data recording and processing method of the present invention;
FIG. 2 is a functional block diagram of a flight parameter recorder;
FIG. 3 is a Harvard code bus data recording method;
FIG. 4 is a harvard bus data processing method.
Detailed Description
A data recording and processing method based on a Harvard code bus comprises a flight parameter recorder [1] and a ground data processing device [2 ].
When the system works, firstly, the flight parameter recorder [1] receives and records Harvard data sent by the comprehensive display control system according to an agreed ARINC717 communication protocol (comprising a communication period, a data format, a data word, a frame format and the like), and meanwhile, the flight parameter recorder [1] sends self working state information to the comprehensive display control system periodically; the ground data processing device downloads data to the flight parameter recorder [1] through the Ethernet, and after the data are downloaded, the ground data processing device [2] reads the Harvard data to judge validity and then processes the Harvard data.
After reading the harvard code data file, firstly, judging the validity of each frame of harvard code data according to the harvard code synchronous word identification, wherein the length of each frame of data of the harvard code is a fixed value, and performing file storage on the data passing frame check. The harvard code synchronization words are identified as "0X 247", "0X 5B 8", "0 XA 47", "0 XDB 8". The Harvard code resolving information is configured in an EXCEL mode, a conversion tool is used for generating a parameter resolving configuration file, the parameter resolving configuration file comprises information such as parameter names, initial words, initial bits, lengths, end words, sampling rates, sign bits, a reduction mode and a display mode, and the parameters can be rapidly acquired and analyzed from frame data streams according to the parameter configuration information.
The harvard data is stored in a 12-bit format, and is considered to be stored byte by byte in the parameter calculation configuration for byte access, so that the 12 bits are subjected to byte completion to form 16 bits during data preprocessing, and the data fetching is convenient.
The present invention is described in further detail below with reference to the attached drawings.
Referring to fig. 1, the recording and processing method based on harvard code bus data of the present invention includes a flight parameter recorder [1] and a ground data processing device [2], where the flight parameter recorder [1] completes receiving and recording of airborne harvard data, and downloads the ground data processing device [2] through an ethernet interface, and the ground data processing device [2] performs fast data processing on the downloaded data.
Referring to fig. 2, the harvard code bus flight parameter recorder [1] of the invention comprises a power module [201], a data management module [202] and a storage module [203], wherein the power module [201] supplies power to the data management module [202], the storage module [203] is arranged in a protection component and is connected with the data management module [202] through a parallel interface, and the data management module [202] is connected with an onboard navigation system through a harvard code bus and is connected with a ground data processing device [2] through an ethernet.
Referring to fig. 3, the method for recording harvard data by the flight parameter recorder [1] is as follows: completing initialization of an ARINC717 bus interface; initializing an ARINC717 bus communication task; harvard data synchronization and communication period judgment supports 64-1024 words/second, if data synchronization is correct, file header information is added according to the length of a judged data frame to complete data recording, each parameter in each frame of data is completely stored into 16 bits according to 12 bits, and if data synchronization is wrong, a fault state word is reported to a comprehensive display control system through an ARINC429 bus, so that a user can complete fault positioning and analysis conveniently.
Referring to fig. 4, the method for processing the harvard code bus data is as follows: reading an original harvard code data file for preprocessing, performing frame validity check and data splitting according to harvard code synchronous word identifiers, counting, and storing the checked data as a temporary file, wherein the number of valid frames represents the number of seconds of harvard code data; selecting parameters to be displayed, reading the temporary data file according to frames, and reading parameter resolving configuration; resolving the original code value of the selected parameter into an engineering value and a visual data file according to the parameter resolving configuration for storage; and finally, playing back and displaying the selected parameter values in a curve and report mode according to the user requirements.
Claims (10)
1. A recording and processing method of Harvard data is characterized in that the recording and processing method is applied to an airborne device and comprises the following steps:
receiving harvard code data;
adding identification information into the harvard data to form identification data;
the identification data is recorded.
2. The method of claim 1, wherein the identification information comprises: elapsed time, frame count word, frame length, and fault word.
3. A recording and processing method of Harvard data is characterized in that the method is applied to a ground processing station and comprises the following steps:
forming a parameter configuration file by configuring parameter types, parameter names, initial bytes, parameter lengths and sampling rates;
reading identification data recorded in airborne equipment;
preprocessing the identification data to form a temporary data file;
reading a parameter configuration file;
analyzing the temporary data file according to the parameter configuration file to obtain an engineering value file;
and outputting the engineering value in the engineering value file.
4. The method according to claim 3, wherein preprocessing the identification data to form a temporary data file specifically comprises:
judging the frame mark of the identification data and the length of the identification data;
in the case where the frame flag is present and the length satisfies a predetermined value, the identification data is written to the temporary data file.
5. The method according to claim 3, wherein preprocessing the identification data to form a temporary data file specifically comprises:
and preprocessing the identification data frame by frame to form a temporary data file.
6. The method according to claim 3, wherein the analyzing the temporary data file according to the parameter configuration file to obtain the engineering value file specifically comprises:
and analyzing the temporary data file frame by frame according to the parameter configuration file to obtain an engineering value file.
7. The method of claim 3, wherein outputting the engineering values in the engineering values file comprises: and outputting the engineering value in the engineering value file in the forms of a report and a curve.
8. An airborne apparatus, comprising:
the receiving module is used for receiving the harvard data;
the loading module is used for adding identification information into the Harvard data to form identification data;
and the storage module is used for recording the identification data.
9. A ground treatment station, comprising:
the configuration module is used for forming a parameter configuration file by configuring the parameter type, the parameter name, the starting byte, the parameter length and the sampling rate;
the reading module is used for reading the identification data recorded in the airborne equipment and reading the parameter configuration file;
the processing module is used for preprocessing the identification data to form a temporary data file and analyzing the temporary data file according to the parameter configuration file to obtain an engineering value file;
and the output module is used for outputting the project values in the project value file.
10. The ground processing station of claim 9, wherein the processing module is specifically configured to:
judging the frame mark of the identification data and the length of the identification data frame by frame;
writing the identification data into the temporary data file frame by frame under the condition that a frame mark exists and the length meets a preset value;
and analyzing the temporary data file frame by frame according to the parameter configuration file to obtain an engineering value file.
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| US8005581B2 (en) * | 2007-09-28 | 2011-08-23 | United Technologies Corp. | Systems and methods for communicating aircraft data |
| CN103235782A (en) * | 2013-03-28 | 2013-08-07 | 北京空间飞行器总体设计部 | Data processing method used for two-device joint test |
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