CN104394029A - An AFDX bus detecting method based on a hybrid channel - Google Patents
An AFDX bus detecting method based on a hybrid channel Download PDFInfo
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Abstract
The invention provides an AFDX bus detecting method based on a hybrid channel, the method comprising: firstly determining a model of a detected device and counting the number of the AFDX physical channels of the detected device; then opening an AFDX terminal port of each physical simulation card in accordance with a generated configuration table file; selecting a test option of the AFDX bus physical channels, performing a sample comparison or a validity judgment on received return test data of one or more channels to obtain a final test report and generate a final test report. The method can perform real-time and high-efficient distributed detection on the function and the performance of multiple avionic devices by only one independent AFDX bus comprehensive testing platform, implements much more efficient and simpler AFDX bus testing, and saves greatly financial resources and manpower.
Description
Technical field
The invention belongs to avionics bus test technical field, the multiple terminal and the multiple passage real-time bus that relate to avionic full-duplex switched-type Ethernet (AvionicsFull Duplex Switched Ethernet) are monitored and method of testing.
Background technology
AFDX full name is avionic full-duplex switched-type Ethernet (Avionics Full Duplex SwitchedEthernet), it is for carrying out exchanges data and a kind of consensus standard defined between avionics system, be based on ARINC429 and 1553B basis on a kind of bus communication protocol specification (ARINC 664 Part7).AFDX network is by improving traditional ethernet technology, and by means of its virtual link technology, two Redundancy Management, the network service performance that the confirmability that communication network postpones etc. are superior, has become avionics system data transmission network of new generation.It is the switching Ethernet of core that AFDX network comes from switch, it and typical Ethernet have similar composition and communication pattern, but owing to rising with regard to Aviation electronic equipment when its birth, so AFDX bus has high security, certainty and reliability, and define the relevant criterion of ARINGC 664 series.
Along with domestic large Aircraft Project is introduced domestic, the various equipment development based on AFDX bussing technique is just accelerating to launch, although have measuring technology that is comparatively ripe and system to AFDX bussing technique abroad, but be only limitted to physical layer and link layer, how realize carrying out to the function of airborne equipment and performance the major domain that distributed testing becomes domestic current AFDX research based on multiple hybrid channel technology.
Summary of the invention
The data capture of physical layer and link layer is only confined in order to overcome commercial board and its software kit in prior art, to upper level network layers and the unlapped deficiency of application layer, the invention provides the total line detecting method of a kind of AFDX based on hybrid channel, by using single channel and multichannel hybrid channel detection technique, realize the real-time distributed remote detection to multiple AFDX terminal equipment, according to function and the performance characteristics of these terminal equipments, the functional simulation that emphasis has customized, Performance Assessment, real-time detection, result gathers and the functions such as analysis, reach the Distributed Detection that need not be realized multiple avionic device AFDX terminal by AFDX switch.
The technical solution adopted for the present invention to solve the technical problems comprises the following steps:
1) model of clear and definite equipment under test, the AFDX physical channel quantity of statistics equipment under test;
2) configure according to the interface ICD of each AFDX physical channel, the quantity according to AFDX artificial card generates the AFDX allocation list file of same quantity automatically, one piece of AFDX artificial card correspondence configuration AFDX allocation list; According to the data content of AFDX LI(link interface), edit the virtual link number of the port one of every 1 AFDX terminal and port 2, source port number, destination slogan, UDP port number and MTU, generate allocation list file;
3) call the api function of AFDX artificial card driver encapsulation according to AFDX allocation list respectively, open the AFDX terminal prot of each physical simulation card respectively;
4) according to the testing requirement of different avionic device, the test option of AFDX bus physical passage is selected, comprise single channel, multichannel and hybrid channel and select; The test process of often kind of passage is as follows:
A) single channel test process: 1 terminal passageway completing 1 AFDX artificial card is arranged, and first selects the test item quantity of this passage, next calls and configures and the single channel test case of generation according to interface ICD; Then these test cases sorted, event or periodicity are sent to tested equipment by AFDX bus single channel, collect the passback test result of tested equipment simultaneously;
B) multiple channel test process: 2 terminal passageway of 1 AFDX artificial card are arranged, first test item kind and the quantity of terminal A and terminal channel B is selected respectively, if terminal A is identical with the kind of terminal channel B, use the test item of one species just can complete test, if kind is different, need the test item quantity selecting terminal A and terminal channel B respectively; Next calls and configures and the multiple channel test use-case of generation according to interface ICD; Then these test cases are sent to tested equipment by AFDX bus termination A and terminal channel B according to testing sequence event or periodicity, collect the passback test result of tested equipment in these passages simultaneously;
C) hybrid channel test process: multiple terminal passageway of multiple AFDX artificial card are arranged, configure test item kind and the quantity of each terminal passageway of each block artificial card respectively, call respectively and configure and the test case of each test channel of generation according to interface ICD; Then these test cases sorted according to different test channel, event or periodicity are sent to tested equipment by multiple hybrid channel, collect the passback test result of tested equipment in these passages simultaneously;
5) the passback test data of one or more passages received is carried out sample comparison or Effective judgement, draw final test result, generate final test report.
The invention has the beneficial effects as follows: achieve the AFDX bus comprehensive test platform only using a platform independent, do not need by connecting and configuring AFDX switch, just can by the hybrid channel technology of polylith AFDX board, use application software to call network configuration and the test data option of multiple avionic device, thus realization carry out the Distributed Detection of real-time high-efficiency to the function of multiple stage avionic device and performance.Based on the AFDX bus test technology of hybrid channel in the present invention, solve previous AFDX bus test and only concentrate on physical layer and link layer and the distributed parallel of the multiple avionic device needing configuration complicated switch could realize is tested, be improved to and not only can test AFDX bus test physical layer and link layer, the different avionics data configured to test network layer of software transfer and application layer can also be passed through, realize more efficient and easy AFDX bus test, save financial resources and manpower greatly.
Accompanying drawing explanation
Fig. 1 is AFDX virtual link principle schematic;
Fig. 2 is traditional AFDX bus testing system composition schematic diagram;
Fig. 3 is AFDX bus comprehensive test platform composition schematic diagram;
Fig. 4 is AFDX bus comprehensive test platform test flow chart.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described, the present invention includes but be not limited only to following embodiment.
The present invention is that distributed the test with synthesization of large Airplane Avionics provides a measuring technique in real time, efficiently and accurately.This total line detecting method realizes based on the AFDX bussing technique of the avionic device of large aircraft, emphasis customized the repertoire of some avionic devices and main performance dynamic monitoring, detect in real time, the function such as fault statistics and analysis.
Be embedded in AFDX bus comprehensive test platform by using the AFDX artificial card of more than two pieces Based PC PCI interface, by loading different AFDX network configuration list files, call the application software processing module developed, use AFDX bus hybrid channel measuring technology, realize the Distributed Detection to multiple avionic device.
The major function that the present invention realizes is as follows:
1. realize AFDX artificial card single channel, multichannel or hybrid channel configuration;
2. realize general purpose single passage physical layer data test item to select and monitoring;
3. realize universal multi-channel physical layer data test item to select and monitoring;
4. realize multiple avionic device hybrid channels data test item to select and monitoring;
5. pair multiple channel data test result analysis and assessment;
Concrete testing process of the present invention is as follows:
1. generate allocation list file according to testing requirement, realize the initialization of AFDX board;
According to the function of avionic device and performance test demand, application testing software can be used to configure according to the interface ICD of each test channel, automatically generate the AFDX allocation list file of same quantity according to the quantity of AFDX artificial card.Corresponding AFDX terminal prot can be opened according to allocation list file, complete the initialization of AFDX board.
2. call tested equipment hybrid channel test item option
The function of different avionic devices is different from Performance Detection demand, and test module and the physics AFDX terminal of the corresponding avionic device editted by the application software dynamic call of independent research carry out Software match.Application software can be called the handling process of carrying out corresponding software module according to the difference of test option.Mainly comprise single channel physical layer data test option, multichannel physical layer data test option and hybrid channel physics and application layer and test option.
3. complete the automatic detection to tested functions of the equipments and performance, generate test report.
After the test item completing hybrid channel calls, by software Automatically invoked test data, the function of tested avionic device and performance are tested item by item.The detection data difference that the detection data that application software is estimated according to comparison return with reality, generates the test report to each tested avionic device item by item, and carries out gathering display.
The method is that distributed the test with synthesization of large Airplane Avionics provides a measuring technique in real time, efficiently and accurately.This total line detecting method is the AFDX bus realizing the multiple avionic device of large aircraft based on AFDX bus hybrid channel measuring technology, emphasis customized the repertoire of some avionic devices and main performance dynamic monitoring, detect in real time, the function such as fault statistics and analysis.Reach the Distributed Detection that need not be realized multiple avionic device AFDX terminal by AFDX switch.
As seen from Figure 1, necessarily need in avionics system AFDX terminal the exchange being carried out Frame by a VL, can say that VL is the communication basis of AFDX.Virtual Link (virtual link) is a notional communication channel, and each VL both defines a connection unidirectional in logic, namely from a source end system to one or more destination system.Each VL is logically isolation mutually, and each VL has special Bandwidth guaranteed, and the transfer of data of multiple VL is independent of each other mutually in effective bandwidth.Between a typical AFDX end system, two independently physical pathway and port A and port B must be had, these two ES terminals constitute the transfer of data approach of AFDX bus, every frame data all can be transferred to object ES terminal by two-way physical pathway while the ES terminal of source as shown in Figure 1, object ES terminal can be uploaded to application program process after receiving first effective frame at once; When after object ES terminal on receipt to a valid data frame, the frame of the same hereinafter serial number will be dropped.
As seen from Figure 2, traditional AFDX bus testing system is formed primarily of aobvious control main frame, single commercial AFDX artificial card, commercial testing software, AFDX switch.First in aobvious control main frame, 1 piece of commercial AFDX artificial card only can be installed, so when will test multiple avionic device, the matching used commercial AFDX switch with artificial card must be connected, could realize testing multiple passages of multiple avionic device by the AFDX switch configuration of complexity, when tested object changes, also must again be configured AFDX switch.Secondly the testing software of this system generally selects the commercial testing software of developer's maturation, only can realize simple AFDX bus physical layer and link layer monitoring, the customization of network layer and application layer cannot be carried out for avionic device, and also cannot support single channel and multichannel strategy used in combination when carrying out secondary software exploitation, larger limits test flexibility.
As seen from Figure 3, AFDX bus comprehensive test platform of the present invention is formed primarily of three parts: aobvious control main frame, application testing software and AFDX artificial card.Wherein application testing running software is controlled on main frame with aobvious, and AFDX artificial card is inserted in aobvious control main frame by pci bus.In this test platform, use two pieces of AFDX artificial cards to test at present, every block AFDX artificial card comprises ES1 and ES2 two terminal interfaces.Concrete composition and related request as follows.
1. aobvious control main frame
The configuration of aobvious control host hardware should be selected to be not less than following configuration: more than 1Ghz processor, more than 512Mb internal memory, more than 100Gb hard disk.The AFDX simulation card of more than two pieces pci interfaces should be installed.
Aobvious control host operating system should configure the one in windows2000 or windows xp or windows vista, and successful installation of the above version of Visual C++6.0.
The related driver programs of AFDX artificial card selected by installation answered by aobvious control main frame, normally can open the function software of AFDX artificial card.
2. application testing software
Under running on the windows operating system of aobvious control main frame, adopt OO programming framework, main finishing man-machine interaction, AFDX artificial card single channel or multichannel configuration, general purpose single channel data test item is selected, general purpose single channel data item is monitored, general purpose single channel data item test statistics is analyzed, each avionic device dedicated program hybrid channel test item is selected, the data item monitoring of dedicated program hybrid channel, dedicated program hybrid channel sends data item and selects, the receiving data item display of dedicated program hybrid channel and dedicated program hybrid channel test result analysis.
3.AFDX artificial card
The AFDX simulation card that current AFDX bus comprehensive test platform uses is the simulation card of certain research institute's independent research domestic, the sharpest edges of this board are strictly meeting under ARINC 664 PART 7 standard prerequisite exactly, can realize polylith board is integrated on a comprehensive test platform, upper application software parallel calling can be supported simultaneously, thus the AFDX bus test technology based on hybrid channel can be supported.
As seen from Figure 4, the step of concrete detection method of the present invention is as follows:
1) clear and definite testing equipment model and required port quantity;
Because the present invention can carry out function and performance distributed and concurrent testing by AFDX bus to multiple avionic device, the AFDX content that bus run passes of each equipment and form are not quite similar, so need the AFDX physical channel quantity of adding up tested equipment, make it to be connected with AFDX bus comprehensive test platform by dedicated connection.
2) AFDX allocation list is generated as required;
After the AFDX physical channel quantity tentatively determining required test, interface ICD according to each test channel configures, quantity according to AFDX artificial card generates the AFDX allocation list file of same quantity automatically, i.e. one piece of AFDX artificial card correspondence configuration AFDX allocation list.According to the data content of AFDX LI(link interface), edit the virtual link number of the port one of every 1 AFDX terminal and port 2, source port number, destination slogan, UDP port number and MTU, generate allocation list file.
3) corresponding AFDX port is opened;
According to the relevant configuration information in AFDX allocation list, call the api function of AFDX artificial card driver encapsulation respectively, open the AFDX terminal prot of each physical simulation card respectively, complete test preparation.
4) tested equipment hybrid channel test item option is called;
According to the testing requirement of different avionic device, select the test option of AFDX bus physical passage, current AFDX bus comprehensive test platform supports three kinds of selections: single channel, multichannel and hybrid channel are selected.The test process of often kind of passage is as follows:
A) single channel test process:
Single pass method of testing flow process is relatively simple, and 1 terminal passageway that only need complete 1 AFDX artificial card is arranged.First select the test item quantity of this passage, namely will be completed the detection of how many by this passage to detected equipment; Next calls and configures and the single channel test case of generation according to interface ICD; Then these test cases sorted, event or periodicity are sent to tested equipment by AFDX bus single channel, collect the passback test result of tested equipment simultaneously, complete single channel and automatically detect.
B) multiple channel test process:
Multichannel method of testing needs to arrange 2 terminal passageway of 1 AFDX artificial card.First test item kind and the quantity of terminal A and terminal channel B is selected respectively, if terminal A is identical with the kind of terminal channel B, use the test item of one species just can complete test, if kind is different, need the test item quantity selecting terminal A and terminal channel B respectively; Next calls and configures and the multiple channel test use-case of generation according to interface ICD; Then these test cases are sent to tested equipment by AFDX bus termination A and terminal channel B according to testing sequence event or periodicity, collect the passback test result of tested equipment in these passages simultaneously, complete multicenter auto-inspected.
C) hybrid channel test process:
The method of testing of hybrid channel needs to arrange multiple terminal passageway of multiple AFDX artificial card.The present invention, for two AFDX artificial cards, configures the terminal A of first piece of artificial card and the test item kind of terminal channel B and quantity first respectively, and then configures the terminal A of second piece of artificial card and the test item kind of terminal channel B and quantity; Owing to being select hybrid channel, the kind of adjacency channel is not identical, needs test item kind and the quantity of selecting each test channel respectively; Secondly call respectively and configure and the test case of each test channel of generation according to interface ICD; Then these test cases sorted according to different test channel, event or periodicity are sent to tested equipment by multiple hybrid channel, collect the passback test result of tested equipment in these passages simultaneously, complete hybrid channel and automatically detect.
5) test report is generated;
Realizing after the automatic test of tested equipment by calling no software module, receiving the passback test data of one or more passages, by these data are carried out sample comparison or Effective judgement, thus drawing final test result.Whether pass through according to the testability of different tested equipment and generate final test report.
This technology can be applied in multiple Aerial Electronic Equipment integrated test system, can save the flexibility ratio and complexity of testing multiple Aerial Electronic Equipment to greatest extent.
A kind of above-described AFDX bus detection technique method based on hybrid channel, does not form the restriction to this technical protection scope.The amendment done within any novel spirit in this technology and principle is equivalent replaces and improvement etc., all should be included within the novel claims of this technology.
Claims (1)
1., based on the total line detecting method of AFDX of hybrid channel, it is characterized in that comprising the steps:
1) model of clear and definite equipment under test, the AFDX physical channel quantity of statistics equipment under test;
2) configure according to the interface ICD of each AFDX physical channel, the quantity according to AFDX artificial card generates the AFDX allocation list file of same quantity automatically, one piece of AFDX artificial card correspondence configuration AFDX allocation list; According to the data content of AFDX LI(link interface), edit the virtual link number of the port one of every 1 AFDX terminal and port 2, source port number, destination slogan, UDP port number and MTU, generate allocation list file;
3) call the api function of AFDX artificial card driver encapsulation according to AFDX allocation list respectively, open the AFDX terminal prot of each physical simulation card respectively;
4) according to the testing requirement of different avionic device, the test option of AFDX bus physical passage is selected, comprise single channel, multichannel and hybrid channel and select; The test process of often kind of passage is as follows:
A) single channel test process: 1 terminal passageway completing 1 AFDX artificial card is arranged, and first selects the test item quantity of this passage, next calls and configures and the single channel test case of generation according to interface ICD; Then these test cases sorted, event or periodicity are sent to tested equipment by AFDX bus single channel, collect the passback test result of tested equipment simultaneously;
B) multiple channel test process: 2 terminal passageway of 1 AFDX artificial card are arranged, first test item kind and the quantity of terminal A and terminal channel B is selected respectively, if terminal A is identical with the kind of terminal channel B, use the test item of one species just can complete test, if kind is different, need the test item quantity selecting terminal A and terminal channel B respectively; Next calls and configures and the multiple channel test use-case of generation according to interface ICD; Then these test cases are sent to tested equipment by AFDX bus termination A and terminal channel B according to testing sequence event or periodicity, collect the passback test result of tested equipment in these passages simultaneously;
C) hybrid channel test process: multiple terminal passageway of multiple AFDX artificial card are arranged, configure test item kind and the quantity of each terminal passageway of each block artificial card respectively, call respectively and configure and the test case of each test channel of generation according to interface ICD; Then these test cases sorted according to different test channel, event or periodicity are sent to tested equipment by multiple hybrid channel, collect the passback test result of tested equipment in these passages simultaneously;
5) the passback test data of one or more passages received is carried out sample comparison or Effective judgement, draw final test result, generate final test report.
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| CN107968722A (en) * | 2017-11-10 | 2018-04-27 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of conversion method of Interface Control File to AFDX network equipments configuration files |
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| CN105188077A (en) * | 2015-08-12 | 2015-12-23 | 深圳市广和通无线股份有限公司 | Communication module test method and system |
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| CN107968722B (en) * | 2017-11-10 | 2020-11-13 | 中国航空工业集团公司西安航空计算技术研究所 | Method for converting interface control file into AFDX (avionics full Duplex switched Ethernet) network equipment configuration file |
| CN109218005B (en) * | 2018-11-15 | 2021-03-23 | 苏州裕太微电子有限公司 | Parallel detection method of Ethernet equipment without auto-negotiation signal |
| CN109218005A (en) * | 2018-11-15 | 2019-01-15 | 苏州裕太车通电子科技有限公司 | A kind of parallel detecting method of the ethernet device of no auto-negotiation signal |
| CN110166316A (en) * | 2019-05-09 | 2019-08-23 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of test method of AFDX network selection module |
| CN111770001A (en) * | 2020-06-11 | 2020-10-13 | 中国民航大学 | AFDX (avionics full Duplex switched Ethernet) bus transmission characteristic detection system and method |
| CN112256512A (en) * | 2020-10-27 | 2021-01-22 | 重庆航天工业有限公司 | General verification and test system based on GLINK bus |
| CN112181850B (en) * | 2020-10-27 | 2023-07-07 | 中航雷华柯林斯(无锡)航空电子设备有限公司 | Comprehensive monitoring system software test platform |
| CN112181850A (en) * | 2020-10-27 | 2021-01-05 | 中航雷华柯林斯(无锡)航空电子设备有限公司 | Comprehensive monitoring system software test platform |
| CN112737872A (en) * | 2020-12-11 | 2021-04-30 | 中国航空工业集团公司西安航空计算技术研究所 | ARINC664P7 end system cross-network testing system and method |
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