CN103048984A - Multi-channel ARINC(aeronautical radio incorporated) 700 bus monitoring device and realizing method thereof - Google Patents

Abstract

The present invention relates to the technical field of avionics, in particular to a multi-channel ARINC700 bus monitoring device and its implementation method. The device is composed of an industrial computer, a bus adapter and a bus access device; the industrial computer includes a multi-channel ARINC429 bus module; the bus adapter consists of Main board, self-test module, power management module and switch matrix module, the bus access device includes aviation bus distribution frame and ZIF connector; through the bus adapter, the control data and bus data are exchanged between the industrial computer and the bus access device ;Through the ZIF connector, the industrial computer transmits the instruction package to the bus adapter to complete the instruction loading, and the monitoring circuit is mounted on the aviation bus to complete the reading of the bus data. When it is necessary to monitor other buses, only need to update the loading instruction, The channel switching can be completed, which is convenient and fast, fully meets the speed requirements in the automatic measurement and control system, greatly reduces the test time, and solves the problem of consuming a large number of bus channels in complex avionics systems.

Description

Multi-channel ARINC700 bus monitoring device and its realization method

technical field

The present invention relates to the field of avionics technology, in particular to a multi-channel ARINC700 bus monitoring device and its implementation method, which are mainly used to realize the automatic monitoring of multi-channel ARINC700 bus data.

Background technique

The ARINC700 series specifications are formulated by the American Aeronautical Radio Corporation (ARINC). The specifications put forward the design requirements for equipment manufacturers. They are the basic specifications of the avionics system. The specifications define the interface characteristics of each avionics system and are the standards for the design of avionics system components. The purpose of this specification is to standardize, as far as possible, the physical and electrical characteristics that affect the interchangeability of equipment. ARINC700 series specifications mainly include: ARINC707-LRA, 708-WXR, 709-DME, 710-ILS, 711-VOR, 712-ADF, 716-VHF, 718-ATC/S, 719-HF, 723-GPWS, 724- ACARS, 727-MLS, 735-TCAS, 750-VDR, 753-HFDU/HFDR, etc. These avionics systems communicate with each other through the aviation bus. The monitoring technology of aviation bus is very important for the development and simulation of avionics system.

At present, there are mainly two problems in bus monitoring technology. First of all, the traditional "end-to-end" bus connection method is mainly used in the current bus monitoring simulation system. This connection method needs to consume a large number of physical bus channels and cannot meet the requirements of dynamic monitoring of complex system bus data. In addition, the system only monitors and collects the data transmitted on the bus, without the functions of data decoding, storage and playback.

Contents of the invention

In order to solve the above problems, the purpose of the present invention is to provide a design scheme and implementation method of a multi-channel ARINC700 bus monitoring device. The automatic monitoring program set is run by the industrial computer, and a good human-computer interaction interface and channel configuration interface are provided. The instruction package is transmitted to the bus adapter through the industrial computer to complete the instruction loading, and the monitoring circuit is mounted on the aviation bus to complete the reading of the bus data. When it is necessary to monitor other buses, the industrial computer only needs to update the loading instruction to complete. Channel switching. In order to achieve convenient and fast testing, reduce the time required for testing, and solve the problem of consuming a large number of bus channels in complex avionics systems.

In order to achieve the above object, the present invention is achieved through such a technical solution: a multi-channel ARINC700 bus monitoring device, characterized in that the device is composed of an industrial computer, a bus adapter and a bus access device;

The industrial computer includes a dedicated communication board, and the dedicated communication board is composed of a multi-channel ARINC429 bus module;

The bus adapter is composed of a main board, a self-test module, a power management module and a switch matrix module, and the bus access device includes an aviation bus distribution frame and a ZIF (zero insertion force) connector;

The industrial computer is used to run the self-developed bus monitoring program set, which is connected to the bus adapter through a serial port and a dedicated communication board, and sends an adaptation to the bus adapter through the interface of the board card and API (Application Programming Interface, application programming interface). Command, call the switch matrix module and self-test module inside the bus adapter, connect the data monitoring circuit to the bus to be tested, complete the bus data collection, and combine the collected bus data with the ICD database (interface control document ICD, interfacecontroldocument) Display or store directly after content comparison; the meaning of each aviation bus, the data of the start and end of the bus are stored in the ICD database, and the 429 data analysis database contains the physical meaning of all data transmitted on the bus;

The bus adapter is connected to the interface of the industrial computer through the serial port and the switch matrix module, and the switch matrix module is connected to the bus access device through the ZIF (zero insertion force) connector. Exchange between bus access devices;

The bus access device connects the aviation bus with the bus adapter, and is used to connect the data monitoring circuit to the aviation bus to be tested. It contains a ZIF (zero insertion force) connector inside, and is connected to the aviation bus through the ZIF connector. When the bus is on When there is data transmission, the data indicating module in the monitoring circuit will emit lights and flicker.

Utilize the described multi-channel ARINC700 bus monitoring device to realize the method for monitoring, comprising the following sequential steps:

(1) Equipment self-inspection: connect the industrial computer to the bus adapter, connect the bus access device to the adapter, and then power on the system for self-inspection;

(2) Judging whether the equipment self-test is passed;

(3) Device initialization: configure hardware resources and software resources;

(4) Loading of monitoring instructions: firstly judge whether the channel number of monitoring needs to be changed, and then the bus adapter mounts the bus monitoring circuit to the corresponding bus channel according to the instructions of the industrial computer;

(5) Bus data acquisition: When there is data transmission on the bus, the special communication board can read the data and transmit it to the industrial computer through the bus adapter;

(6) Data processing stage: The bus data read by the board is processed in two aspects:

a. Decode bus data and translate it into actual physical meaning; physical meaning includes frequency word, relative azimuth, flight number, fault information;

b. The data is directly stored in the support database for processing and analysis after monitoring; the support database is an overall database, including ICD database, 429 data analysis database, and storage database;

(7) Display of bus data: Compared with the ICD database of the corresponding model, the physical meaning of the collected data will be displayed in real time; the physical meaning of the data includes frequency words, relative azimuth angles, flight numbers, and fault information;

(8) Analysis and playback of stored data: call the stored data file for offline playback;

(9) Determine whether the monitoring channel needs to be modified; when it needs to be modified, send a new loading command;

(10) Monitoring ends.

The main board of the bus adapter includes a main control circuit using a single-chip microcomputer as the core and an asynchronous serial communication module; the self-test module includes a main control circuit using a single-chip microcomputer as the core, a channel integrity testing module, an ARINC429 data sampling module and an asynchronous serial communication module; The switch matrix module is composed of a relay control module based on a single chip microcomputer, a relay drive circuit, a relay module and an asynchronous serial communication module. the

The multi-channel ARINC700 bus monitoring device provided by the present invention and its implementation method are automatic monitoring programs run by an industrial computer, providing a good human-computer interaction interface and a channel configuration interface; the industrial computer transmits the instruction packet to the bus adapter, completes instruction loading, and monitors the circuit Mount it on the aviation bus to complete the reading of the bus data. When it is necessary to monitor other buses, the industrial computer only needs to update the loading command to complete the channel switching. Convenient and fast, it can fully meet the speed requirements in the automatic measurement and control system, greatly reducing the time required for testing, and on the other hand, it also solves the problem of consuming a large number of bus channels in complex avionics systems.

Description of drawings

Fig. 1 constitutes a block diagram of multi-channel ARINC700 bus monitoring device provided by the present invention;

Fig. 2 is the multi-channel ARINC700 bus monitoring realization method software functional module division figure provided by the present invention;

Fig. 3 is a flow chart of the multi-channel ARINC700 bus monitoring implementation method provided by the present invention.

In the figure: 1. Industrial computer, 2. Bus adapter, 3. Bus access device, 11. Industrial computer serial port, 12. Special communication board, 21. Main board, 22. Self-test module, 23. Power management module, 24 . Switch matrix module, 31. ZIF (Zero Insertion Force) connector.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in detail.

As shown in Figure 1, the multi-channel ARINC700 bus monitoring device consists of an industrial computer 1, a bus adapter 2 and a bus access device 3.

The industrial computer 1 includes a dedicated communication board 12, and the dedicated communication board 12 is composed of a multi-channel ARINC429 module;

The bus adapter 2 is composed of a main board, a self-check module, a power management module and a switch matrix module. the

The bus access device 3 includes an aviation bus distribution frame and a ZIF (zero insertion force) connector 31.

The industrial computer 1 is used to run the bus monitoring program set and is connected to the bus adapter 2. It sends an adaptation command to the bus adapter 2 by calling internal hardware resources and software resources, calls the internal resources of the bus adapter 2, and the system transfers the data monitoring circuit Connect to the bus that needs to be tested, complete the data collection, and then compare the collected bus data with the content of the ICD database and display or store it directly; the ICD database is a database established according to the ICD files of different models. The meaning represented by each ARINC429 bus solves the problem of where this bus comes from and where it goes.

The bus adapter 2 is connected to the interface of the industrial computer 1 and connected to the bus access device 3. Through the bus adapter 2, the control data and bus data transmitted in the system are exchanged between the industrial computer 1 and the bus access device 3.

The bus access device 3 connects the 256-way aviation bus with the bus adapter 2, and is used to connect the data monitoring circuit to the aviation bus to be tested. The bus access device 3 contains the aviation bus distribution frame and ZIF (zero insertion force) connector 31, and the distribution frame connects all the aviation buses to the ZIF connector 31 test line. When there is data transmission on the bus, the data indicating module in the monitoring circuit will emit lights and flash.

The bus adapter 2 includes: a main board 21 for the main control adapter, a self-check module 22 for the adapter self-check, a power management module 23 for supplying power to each module inside the adapter; a switch for bus channel switching For the matrix module 24, in order to distinguish different monitoring levels and save costs, the switch matrix module 24 is divided into three types: A, B, and C.

Among them, type A is the highest level, it is a full-featured 16×256-way switch, which can completely monitor 256-way buses, and each monitoring circuit can be connected to any 256-way aviation bus.

Type B is a semi-functional 8×128-way switch, which can complete the monitoring of 128 aviation buses, and cascading another one can complete the monitoring of all 256-way buses, but each switch matrix board can only monitor and connect to this board On the 128-way, the other cascaded board cannot be monitored.

Type C is the basic type of 1×16 switch, and its function is similar to that of Type B. The above three types of boards can meet different monitoring requirements, and users can configure different switch matrix boards according to their test tasks.

 As shown in Figure 2, it is a division diagram of the software function modules of the multi-channel ARINC700 bus monitoring implementation method provided by the present invention. When the user needs to monitor the bus of the ARINC700 series components connected to the aviation bus, first connect the aviation bus access device to the bus to be tested, and connect the bus access device and the industrial computer at both ends of the bus adapter to give the entire system Power on, and then turn on the industrial computer to run the bus data monitoring program.

First, the system enters the self-test program, mainly checking whether the multi-channel ARINC700 bus monitoring device provided by the present invention is fully functional and available, and whether there is a fault in itself, mainly including the self-loop and outer-loop tests of the special communication board, and the functions of each module in the bus adapter. Test, wiring harness connection test of distribution frame in bus access equipment. Only when the self-test is passed can the following process be entered.

After the self-test is passed, the system's bus data monitoring program configures the system's software resources and hardware resources, and completes the initialization work required for data monitoring. The initialization work here mainly completes the channel configuration of the dedicated general-purpose board, the transmission rate, the setting of the monitoring interval and other steps.

After the control command is transmitted to the bus adapter device, the command word is analyzed, the switch matrix board is controlled, the test circuit of the special communication board is mounted on the bus to be tested, and the data acquisition module is called to complete the data acquisition of the bus. monitor.

The collected bus data are respectively transmitted to the display module and the storage module for processing. The display module analyzes the data against the ICD database of the corresponding model, and completes the real-time analysis and display of the ARINC700 component data word to the actual physical meaning. The storage module directly stores the data into the support database for offline playback and post-event analysis after monitoring.

The establishment method of ICD database: because the civil aviation airliner of different models, it is all different for ICD file, in order to make the present invention analyze the bus data of ARINC700 series assembly as much as possible, isolate ICD database and the special-purpose data communication card of bottom layer , develop several relatively independent ICD databases, and store the data transmitted in the series of components in the database. The data includes data physical meaning, transmission rate, control logic, encoding analysis form, symbol bit and other main contents. After the bus data is read, it directly corresponds to the ICD database, and the industrial computer automatically searches for relevant information, which reduces the event overhead and completes the timely processing of the data. When you need to monitor different bus devices, you only need to import the corresponding ICD database to complete the monitoring switch.

As shown in Figure 3, utilize the multi-channel ARINC700 bus monitoring implementation method provided by the present invention to include the following steps carried out in order:

(1) Equipment self-inspection: connect the industrial computer to the bus adapter, connect the bus access device to the adapter, and then power on the system for self-inspection;

(2) Judging whether the equipment self-test is passed;

(3) Device initialization: configure hardware resources and software resources;

(4) Loading of monitoring instructions: firstly judge whether the channel number of monitoring needs to be changed, and then the bus adapter mounts the bus monitoring circuit to the corresponding bus channel according to the instructions of the industrial computer;

(5) Bus data acquisition: When there is data transmission on the bus, the special communication board can read the data and transmit it to the industrial computer through the bus adapter;

(6) Data processing stage: The bus data read by the board is processed in two aspects:

a. Decode bus data and translate it into actual physical meaning;

b. The data is directly stored in the supporting database for processing and analysis after monitoring;

(7) Display of bus data: compare the ICD database of the corresponding model, and display the physical meaning of the collected data in real time;

(8) Analysis and playback of stored data: call the stored data file for offline playback;

(9) Determine whether the monitoring channel needs to be modified; when it needs to be modified, send a new loading command;

(10) Monitoring ends.

According to the above description, the present invention can be realized in combination with professionally known technologies.

Claims (3)

1. The multi-channel ARINC700 bus monitoring device is characterized in that the device is composed of an industrial computer, a bus adapter and a bus access device; Include special-purpose communication board in described industrial computer, and special-purpose communication board is made of multi-channel ARINC429 bus module; Described bus adapter is made of main board, self-test module, power supply management module and switch matrix module; Described bus access device Contains aviation bus distribution frame and ZIF connector; The industrial computer is used to run the self-developed bus monitoring program set, which is connected to the bus adapter through a serial port and a dedicated communication board, and through the adjustment board and API interface, it sends an adaptation command to the bus adapter and calls the switch matrix module inside the bus adapter , Self-inspection module, connect the data monitoring circuit to the bus that needs to be tested, complete the collection of bus data, compare the collected bus data with the ICD database and 429 data analysis database content and display or directly store; save in the ICD database The meaning of each aviation bus, the start and end data of the bus, the 429 data analysis database contains the physical meaning of all data transmitted on the bus; The bus adapter is connected to the interface of the industrial computer through the serial port and the switch matrix module, and the switch matrix module is connected to the bus access device through the ZIF (zero insertion force) connector. Exchange between bus access devices; The bus access device connects the aviation bus to the bus adapter, and is used to connect the data monitoring circuit to the aviation bus to be tested. It contains a ZIF connector inside and is connected to the aviation bus through the ZIF connector. When there is data transmission on the bus, The data indication module in the monitoring circuit will emit light flashing. 2. utilize the multi-channel ARINC700 bus monitoring device described in claim 1 to realize the method for monitoring, it is characterized in that, comprise following sequence step: (1) Equipment self-inspection: connect the industrial computer to the bus adapter, connect the bus access device to the adapter, and then power on the system for self-inspection; (2) Judging whether the equipment self-test is passed; (3) Device initialization: configure hardware resources and software resources; (4) Loading of monitoring instructions: firstly judge whether the channel number of monitoring needs to be changed, and then the bus adapter mounts the bus monitoring circuit to the corresponding bus channel according to the instructions of the industrial computer; (5) Bus data acquisition: When there is data transmission on the bus, the special communication board can read the data and transmit it to the industrial computer through the bus adapter; (6) Data processing stage: The bus data read by the board is processed in two aspects: a. Decode bus data and translate it into actual physical meaning; physical meaning includes frequency word, relative azimuth, flight number, fault information; b. The data is directly stored in the support database for processing and analysis after monitoring; the support database is an overall database, including ICD database, 429 data analysis database, and storage database; (7) Display of bus data: Compared with the ICD database of the corresponding model, the physical meaning of the collected data will be displayed in real time; the physical meaning of the data includes frequency words, relative azimuth angles, flight numbers, and fault information; (8) Analysis and playback of stored data: call the stored data file for offline playback; (9) Determine whether the monitoring channel needs to be modified; when it needs to be modified, send a new loading command; (10) Monitoring ends. 3. multi-channel ARINC700 bus monitoring device as claimed in claim 1, is characterized in that, the mainboard of bus adapter comprises the main control circuit and the asynchronous serial communication module that use single-chip microcomputer as core; control circuit, channel integrity test module, ARINC429 data sampling module and asynchronous serial communication module; the switch matrix module is composed of relay control module based on microcontroller, relay drive circuit, relay module and asynchronous serial communication module.

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