CN105550382A - AFDX (Avionics Full Duplex Switched Ethernet) data sampling rerecording equipment and method - Google Patents
AFDX (Avionics Full Duplex Switched Ethernet) data sampling rerecording equipment and method Download PDFInfo
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Abstract
The invention discloses AFDX (Avionics Full Duplex Switched Ethernet) data sampling rerecording equipment. Through a timing data sampling mechanism, a data acquisition process and a data output process are transferred to acquisition equipment without occupying the processing performance of application software, and data acquisition instantaneity is guaranteed while the resource consumption of a host processor is reduced. In addition, an acquired data store process and a sampling data output process are isolated through a double-buffering mechanism of a first storage module and a second storage module, data integrity is guaranteed, and meanwhile, different sampling points are supported to acquire data on different positions of the same frame. The AFDX data sampling rerecording method can store one flow which contains effective data (sampling data), and is convenient for application analysis. Meanwhile, through the double-buffering mechanism of the first storage module and the second storage module, different sampling points can be supported to acquire the data on different positions of the same data frame, and therefore, the application software can be flexibly designed.
Description
Technical field
The invention belongs to Computer Applied Technology field, relate to a kind of AFDX data sampling recording unit.
Background technology
In traditional collecting device, the acquisition and recording process of target data receives the data segment of data for the collection of trigger point renewal needs, record all bus datas simultaneously, to ensure that choose parameters keeps last state, but the data of diverse location may from different pieces of information frame on the same frame at a time got, and the sampled point of record data is based on inquiry, while ensureing data integrity, also causes consumption of natural resource excessive.
Summary of the invention
Object of the present invention: the invention provides a kind of AFDX data sampling recording unit, in order to solve the technical matters existed in traditional acquisition and recording equipment.
Technical solution of the present invention is:
A kind of AFDX data sampling recording unit, its special character is, comprises configuration module, MAC nucleus module, data sampling module core, timer module and data and exports nucleus module; Wherein, described configuration module, connects outer input interface; For configuration cycle, time migration, message identifier, sampling location, sampling width and outgoing position; Described MAC nucleus module, receives the data from AFDX network, exports to data sampling nucleus module by redundancy management with after filtering; Described data sampling nucleus module, stores the data from MAC nucleus module according to the message identifier of configuration module, and upgrades this storage; Described timer module, starts timer according to cycle interruption, produces Interruption according to the time migration of configuration module, and timing interrupts is exported to data output nucleus module; Described data export nucleus module, receive the timing interrupts from timer module, and with reference to the time migration configuration of Current interrupt, the data of data sampling nucleus module are sent to target terminal.
Above-mentioned MAC nucleus module comprises integrity checking A module, integrity checking B module, redundancy management module and filtering module; Wherein, described redundancy management module, for managing the output of integrity checking A module and integrity checking B module; Described filtering module, is connected to data sampling nucleus module.
Above-mentioned data sampling nucleus module comprises enquiry module, the first memory module and the first update module; Wherein, described enquiry module for receiving the data from described filtering module, and configures according to data search; Described first memory module, filters the data from described filtering module according to the message identifier of described configuration module, and the data after filtering are saved to the first memory module; Described first update module is for upgrading described first memory module.
Above-mentioned timer module comprises cycle interruption module, time block and Interruption module; Wherein, described cycle interruption module, produces the first look-at-me according to the cycle of described configuration module; Described time block, judges startup and the reset of timer according to the first look-at-me; Described Interruption module, produces the second look-at-me according to the time migration of described configuration module, and the second look-at-me is exported to described data output nucleus module.
Above-mentioned data export nucleus module and comprise the second memory module, the second update module and output module; Wherein, described second memory module, filters the data of described first memory module for the sampling location according to described configuration module, sampling width and outgoing position, and the data after filtering are saved to the second memory module; Described second update module, for upgrading described second memory module; Described output module, for exporting to target terminal by data.
Above-mentioned first update module for upgrading described first memory module and the second update module, for upgrading the mapping address that described second memory module is all update module.
The recording method of a kind of AFDX data sampling, comprises the steps:
Step 1: if there is no configuration file, then write configuration module by configuration file;
Step 2: check configuration file, and set up look-up table according to configuration; For message allocate storage, all modules of initialization, make equipment complete initialization and enter normal operating conditions;
Step 3: use AFDX emulator to send the data needing sampling to acquisition and recording device;
Step 4: data are submitted to after " PHY chip ", " MAC core " verification " data sampling core "; Described " MAC core " verification comprises IP fragmentation recombination function;
Step 5: " data sampling core " according to receiving data header information query messages look-up table, and by needing the data of sampling to be stored into corresponding message memory block, upgrades buffer pointer; Described data header information comprises hierarchical information and burst address;
Step 6: when Interruption produces, according to the configuration of current time offset from information storage area copies data to collector output buffer, upgrades buffer zone, is ready to complete signal to application software reported data;
Step 7: when application software receives the interruption of data encasement completion timing, read and storage of collected data from collector output buffer;
Step 8: application software is pressed configuration file and data exported and analysis result.
In above-mentioned steps 2, set up look-up table according to configuration, be specially:
Step 2.1: locate full message according to " message look-up table " that " virtual link ", " IP address ", " UDP port number " information are set up;
Step 2.2: " the fragmental messages look-up table location IP fragmentation and reassembly message " set up according to " virtual link ", " IP address ", " IP fragmentation mark " information.
The advantage that the present invention has:
1, the invention provides a kind of AFDX data sampling recording unit, by a kind of timing data sampling mechanism, make data acquisition, data output process is transferred to collecting device, no longer take application software handling property, while reducing host processor resources consumption, ensure the real-time of image data; Acquired data storage and sampled data output procedure are isolated by the double buffers of the first memory module and the second memory module by another the present invention, ensure that the integrality of data, support that different sampled point gathers the data of same Frame diverse location simultaneously.
2, AFDX data sampling of the present invention recording method, can store the stream that portion only comprises valid data (sampled data), be convenient to applied analysis; Can support that different sampled point gathers the data of same Frame diverse location by the double buffers of the first memory module and the second memory module simultaneously, and make the design of application software more flexible.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Embodiment
As shown in Figure 1, the invention provides a kind of AFDX data acquisition equipment, comprise configuration module, MAC nucleus module, data sampling module, timer module and data and export nucleus module; Wherein:
Configuration module, connects outer input interface; For configuration cycle, time migration, message identifier, sampling location, sampling width and outgoing position;
MAC nucleus module, connects AFDX network interface, receives the data from AFDX network, and data are exported to data sampling nucleus module; MAC nucleus module, comprises integrity checking A module, integrity checking B module, redundancy management module and filtering module; Wherein, redundancy management module, for managing the output of integrity checking A module and integrity checking B module; Filtering module, is connected to data sampling nucleus module.
Data core sampling module, receives the data from MAC nucleus module, and according to the message identifier filtering data of configuration module, and the data after filtering are carried out preserving and upgrading; Data sampling nucleus module, comprises enquiry module, the first memory module, the first update module; Enquiry module, for receiving the data from filtering module, and configures according to data search; First memory module, filters the data from filtering module according to the message identifier of configuration module, and the data after filtering are saved to the first memory module; First update module, for upgrading the first memory module.
Timer module, exports to data and exports nucleus module by look-at-me; Comprise cycle interruption module, time block and Interruption module; Wherein, cycle interruption module, produces the first look-at-me according to the cycle of configuration module; Time block, judges startup and the reset of timer according to the first look-at-me; Interruption module, produces the second look-at-me according to the time migration of configuration module, and the second look-at-me is exported to data output nucleus module.
Data export nucleus module, receive the timing interrupts from timer module, and send the data to target terminal.Data export nucleus module, comprise the second memory module, the second update module and output module; Wherein, the second memory module, filters the data of the first memory module for the sampling location according to configuration module, sampling width and outgoing position, and the data after filtering are saved to the second memory module; Second update module, for upgrading the second memory module; Output module, for exporting to target terminal by data.
In practical application, AFDX data sampling recording unit provided by the invention: " MAC nucleus module " is submitted to " data sampling core " after carrying out integrity checking, redundancy management, filtration to AFDX data; " data sampling core " checks sampling configuration, samples to the Frame meeting sampling request, and stores Data Data frame for " data output core " reading, and memory block adopts double buffers to damage to avoid sampled data; When the sampling time point arrive time, " data output core " according to configuration by data encasement to output buffer and notify application software read sampled data, output buffer adopt equally double buffers with guarantee application software read data integrity; When application software receives sampled data signal, data are stored to sampled data stream.
The invention provides a kind of AFDX data sampling recording unit, treatment step is as follows:
Step 1: if there is no configuration file, then should write configuration module by configuration file;
Step 2: check configuration file, and set up look-up table according to configuration; For message allocate storage, all modules of initialization, so that equipment completes initialization enter normal operating conditions;
In step 2, set up look-up table according to configuration, be specially:
Step 2.1: for locating " the message look-up table " set up according to " virtual link ", " IP address ", " UDP port number " information of full message;
Step 2.2: for locating " the fragmental messages look-up table " set up according to " virtual link ", " IP address ", " IP fragmentation mark " information of IP fragmentation and reassembly message;
Step 3: use AFDX emulator to send data (needing the data of sampling) to acquisition and recording device;
Step 4: data through " PHY chip (physical chip) ", " MAC core (medium access core) " verification (comprising IP fragmentation recombination function) after submit to " data sampling core ";
Step 5: " data sampling core " according to receiving data header information query messages look-up table, and by needing the data of sampling to be stored into corresponding message memory block, upgrades buffer pointer;
Step 6: when Interruption produces, according to the configuration of current time offset from information storage area copies data to output buffer, upgrades buffer zone, is ready to complete signal to application software reported data;
Step 7: when application software receive data encasement complete interruption time, from collector output buffer read and storage of collected data;
Step 8: application software is pressed configuration file and data exported and analysis result.
Claims (8)
1. an AFDX data sampling recording unit, is characterized in that: comprise configuration module, MAC nucleus module, data sampling module core, timer module and data and export nucleus module; Wherein, described configuration module, connects outer input interface; For configuration cycle, time migration, message identifier, sampling location, sampling width and outgoing position; Described MAC nucleus module, receives the data from AFDX network, exports to data sampling nucleus module by redundancy management with after filtering; Described data sampling nucleus module, stores the data from MAC nucleus module according to the message identifier of configuration module, and upgrades this storage; Described timer module, starts timer according to cycle interruption, produces Interruption according to the time migration of configuration module, and timing interrupts is exported to data output nucleus module; Described data export nucleus module, receive the timing interrupts from timer module, and with reference to the time migration configuration of Current interrupt, the data of data sampling nucleus module are sent to target terminal.
2. AFDX data sampling recording unit according to claim 1, is characterized in that: described MAC nucleus module comprises integrity checking A module, integrity checking B module, redundancy management module and filtering module; Wherein, described redundancy management module, for managing the output of integrity checking A module and integrity checking B module; Described filtering module, is connected to data sampling nucleus module.
3. AFDX data sampling recording unit according to claim 1, is characterized in that: described data sampling nucleus module, comprises enquiry module, the first memory module and the first update module; Wherein, described enquiry module for receiving the data from described filtering module, and configures according to data search; Described first memory module, filters the data from described filtering module according to the message identifier of described configuration module, and the data after filtering are saved to the first memory module; Described first update module is for upgrading described first memory module.
4. AFDX data sampling recording unit according to claim 1, is characterized in that: described timer module, comprises cycle interruption module, time block and Interruption module; Wherein, described cycle interruption module, produces the first look-at-me according to the cycle of described configuration module; Described time block, judges startup and the reset of timer according to the first look-at-me; Described Interruption module, produces the second look-at-me according to the time migration of described configuration module, and the second look-at-me is exported to described data output nucleus module.
5. AFDX data sampling recording unit according to claim 1, is characterized in that: described data export nucleus module, comprise the second memory module, the second update module and output module; Wherein, described second memory module, filters the data of described first memory module for the sampling location according to described configuration module, sampling width and outgoing position, and the data after filtering are saved to the second memory module; Described second update module, for upgrading described second memory module; Described output module, for exporting to target terminal by data.
6. the AFDX data sampling recording unit according to claim 3 or 5, it is characterized in that: described first update module for upgrading described first memory module and the second update module, for upgrading the mapping address that described second memory module is all update module.
7. an AFDX data sampling recording method, is characterized in that: comprise the steps:
Step 1: if there is no configuration file, then write configuration module by configuration file;
Step 2: check configuration file, and set up look-up table according to configuration; For message allocate storage, all modules of initialization, make equipment complete initialization and enter normal operating conditions;
Step 3: use AFDX emulator to send the data needing sampling to acquisition and recording device;
Step 4: data are submitted to after " PHY chip ", " MAC core " verification " data sampling core "; Described " MAC core " verification comprises IP fragmentation recombination function;
Step 5: " data sampling core " according to receiving data header information query messages look-up table, and by needing the data of sampling to be stored into corresponding message memory block, upgrades buffer pointer; Described data header information comprises hierarchical information and burst address;
Step 6: when Interruption produces, according to the configuration of current time offset from information storage area copies data to collector output buffer, upgrades buffer zone, is ready to complete signal to application software reported data;
Step 7: when application software receives the interruption of data encasement completion timing, read and storage of collected data from collector output buffer;
Step 8: application software is pressed configuration file and data exported and analysis result.
8. AFDX data sampling recording method according to claim 7, is characterized in that: in described step 2, set up look-up table according to configuration, be specially:
Step 2.1: locate full message according to " message look-up table " that " virtual link ", " IP address ", " UDP port number " information are set up;
Step 2.2: " the fragmental messages look-up table location IP fragmentation and reassembly message " set up according to " virtual link ", " IP address ", " IP fragmentation mark " information.
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Effective date of registration: 20221010 Address after: Room S303, Innovation Building, No. 25, Gaoxin 1st Road, Xi'an, Shaanxi 710075 Patentee after: XI'AN XIANGTENG MICROELECTRONICS TECHNOLOGY Co.,Ltd. Address before: No. 15, Jinye Second Road, Xi'an, Shaanxi 710065 Patentee before: AVIC XI''AN AERONAUTICS COMPUTING TECHNIQUE RESEARCH INSTITUTE |