CN112162495A - Inertial navigation simulation system and method based on ARINC429 bus - Google Patents
Inertial navigation simulation system and method based on ARINC429 bus Download PDFInfo
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Abstract
The invention discloses an inertial navigation simulation system and a simulation method based on an ARINC429 bus, which comprise an inertial navigation system simulation controller, a data transmission and control bus, an ARINC429 communication interface, an ARINC429 interface adapter and inertial navigation system simulation software, wherein the inertial navigation system simulation software is installed in the inertial navigation system simulation controller, a plurality of ARINC429 interface adapters are arranged, and each ARINC429 interface adapter is connected to the data transmission and control bus through one ARINC429 communication interface. The system automatically completes the configuration of the simulation environment according to the loaded hardware configuration and coding protocol when the simulation software of the inertial navigation system runs by a method of mapping a data structure and inputting, editing, storing and loading software for the application test environment hardware configuration and the interface control file, so that the simulation system has good maintainability, and the corresponding coding protocol is modified by configuring different interface control files, thereby reducing the maintenance cost of the test system.
Description
Technical Field
The invention belongs to the field of aviation bus testing, and particularly relates to an inertial navigation simulation system and method based on an ARINC429 bus.
Background
The ARINC429 data bus is a data transmission bus commonly used in military and civil avionics systems, and data information is output from a transmission port of a communication device and transmitted to a receiving port of other equipment connected with the data transmission bus and needing the information. In the ARINC429 bus protocol, each message word is specified to contain 32-bit information, and mainly comprises five parts: parity bits (P), symbol/state matrix bits (SSM), DATA area (DATA), source/destination identifier bits (SDI), and information identifier bits (LABEL). In the ARINC429 bus design of the avionics system, determining the specific interface type adopted for information transmission between devices/systems according to various requirements and defining detailed data coding formats are very important design works, and the design contents of the data coding formats finally form interface control files.
The inertial navigation system is an important component system in an airborne avionic system, and can provide important navigation information such as longitude and latitude, altitude, roll, course, pitch angle, intersection angular velocity, barometric altitude and the like necessary for basic flight for an aircraft.
In the test of an ARINC429 bus interface of an inertial navigation system, the test work of the system is often completed through semi-physical simulation, and when the semi-physical simulation is performed currently, because the ARINC429 bus data volume is large, and interactive information in the bus is not easy to change simultaneously, the efficiency influence is brought to the semi-physical simulation work, and the maintenance cost of the test system is increased.
Disclosure of Invention
The invention aims to provide an inertial navigation simulation system and a simulation method based on an ARINC429 bus, which are used for overcoming the problem that the maintenance cost is increased due to the fact that information is not easy to change and the data size is large in the conventional simulation method.
In order to realize the task, the invention adopts the following technical scheme:
an inertial navigation simulation system based on an ARINC429 bus comprises an inertial navigation system simulation controller, a data transmission and control bus, an ARINC429 communication interface, an ARINC429 interface adapter and inertial navigation system simulation software, wherein the inertial navigation system simulation software is installed in the inertial navigation system simulation controller, a plurality of ARINC429 interface adapters are arranged, and each ARINC429 interface adapter is connected to the data transmission and control bus through one ARINC429 communication interface. The inertial navigation simulation system automatically completes the configuration of the simulation environment according to the loaded hardware configuration and coding protocol when the inertial navigation simulation system simulation software runs by a method of carrying out data structure mapping and software entry, editing, storing and loading on the application test environment hardware configuration and interface control files, and modifies the corresponding coding protocol by configuring different interface control files.
Furthermore, the inertial navigation simulation controller is used for realizing the function of the inertial navigation system simulation software, and realizes the receiving and sending of data information between the simulation software and the upper computer through an ARINC429 bus communication interface and an ARINC429 interface adapter; the inertial navigation system simulation software is used for simulating the actual data processing process of the inertial navigation system.
Further, the data transmission and control bus is arranged in a chassis of the test controller and is used for realizing the transmission and exchange of data information between the inertial navigation simulation controller and the ARINC429 interface adapter and the transmission of clock, trigger and synchronous control signals.
Further, the ARINC429 bus communication interface is used for transmitting ARINC429 data information of the inertial navigation system, which is sent by the upper computer, to the inertial navigation simulation controller, receiving ARINC429 bus data sent by the inertial navigation simulation controller, and sending the ARINC429 bus data to the upper computer.
Further, the ARINC429 interface adapter is used for realizing the physical connection between the ARINC429 communication interface and an ARINC429 data bus, and ensuring the smoothness of an ARINC429 data information transmission channel.
Further, the inertial navigation system simulation software includes a simulation control module, an interface control file coding management module, a channel configuration management module, a channel selection module, a protocol coding module, and a data simulation module, wherein:
and the simulation control module is used for receiving the inertial navigation system operation data of the user and finishing the setting and editing of the inertial navigation parameters according to the input data.
The interface control file coding management module is used for converting an interface control file of the inertial navigation system into a message format file which can be identified by the interface control file coding management module so as to be convenient to call, the message format file is composed of protocol information, the protocol information in the message format file adopts a file storage mode, and the protocol information is an example of a protocol coding data structure;
the channel configuration management module is used for configuring the characteristics of an ARINC429 communication interface of the inertial navigation system, including the association of an ARINC429 board card number, a communication interface communication rate, a parity check mode and a message format file, and forming a channel configuration management file;
the channel selection module is used for selecting an ARINC429 communication interface required by the simulation system;
the data simulation module is used for storing the inertial navigation system operation data of the user into a data to-be-coded area;
the protocol coding module is used for coding data in a data to-be-coded area according to a message format file associated with the ARINC429 communication interface and sending the coded data to the corresponding ARINC429 communication interface according to the channel selection module.
Further, the inertial navigation system simulation software further comprises a display module and an initialization module, wherein:
the display module is used for transmitting the inertial navigation system operation data of the user to a man-machine interface for displaying the man-machine interface;
the initialization module is used for initializing the interface control file coding management module, the channel configuration management module, the protocol coding module and the data simulation module.
Further, the protocol encoding data structure includes a signal index, a start bit, an end bit, a signal name, a scale factor, a sign bit, a data unit, or a signal description, wherein:
signal labels are signal identifiers in the ARINC429 word; the start bit and the end bit are valid start and end positions of ARINC429 data; the signal name is a physical name in a data domain in the interface control file; the scale factor is used for converting the actual physical quantity into an actual transmission signal of the ARINC429 bus in a proportional mode, the sign bit indicates that data is a positive value or a negative value, and the data unit or signal description is used for describing the unit of data or signal-related information.
A simulation method of an inertial navigation simulation system based on an ARINC429 bus comprises the following steps:
firstly, a user extracts information in an interface control file of an inertial navigation system through a protocol coding module, and carries out editing, modifying and storing operations, and converts the extracted information into a message format file;
secondly, the user converts the set information into a channel configuration management file through the editing, modifying and storing operations of the channel configuration management module;
and thirdly, the user operates simulation software through the ARINC429 communication interface selected by the channel selection module, the simulation software automatically calls the initialization module and the protocol coding module, and the user performs simulation transmission through corresponding data of the simulation control module of the software.
Compared with the prior art, the invention has the following technical characteristics:
the simulation system provided by the invention adopts the method of mapping the data structure of the hardware configuration of the application test environment which changes frequently and needs to be changed, and the configuration of the test environment is automatically completed according to the loaded hardware configuration and the coding protocol when the simulation software runs, so that the problem that the bus information is not easy to modify in the existing method can be effectively solved, and the inertial navigation simulation system based on the ARINC429 digital bus is not required to be re-developed and modified and maintained, so that the simulation system has good maintainability, the repeated development of the simulation system caused by the ARINC429 bus interface change of the inertial navigation system in the comprehensive test of the avionic system is avoided, the labor cost of the development of the test system is reduced, and the maintenance cost of the test system is reduced.
Drawings
FIG. 1 is a schematic diagram of a simulation system according to the present invention;
FIG. 2 is a schematic structural diagram of one embodiment of the present invention;
FIG. 3 is a diagram of an editing operation interface for protocol coding management according to the present invention;
FIG. 4 is an interface diagram of an editing operation for managing the configuration of the simulation channel of the inertial navigation system according to the present invention.
Detailed Description
In the test of an ARINC429 bus interface of an inertial navigation system, the test work of the system is often completed through semi-physical simulation, so that an inertial navigation simulation system based on an ARINC429 digital bus must be developed, the main function of the system is to input data required by the inertial navigation system in a human-computer interface of the system, the system packs the input data according to an interface control file of the system to form an ARINC429 data original code, and the original code data is sent to a tested system on a configuration channel through a built-in ARINC429 bus board card.
Referring to fig. 1, the inertial navigation simulation system based on the ARINC429 bus provided by the invention comprises an inertial navigation system simulation controller, a data transmission and control bus, an ARINC429 communication interface, an ARINC429 interface adapter and inertial navigation system simulation software, wherein the inertial navigation system simulation software is installed in the inertial navigation system simulation controller, a plurality of ARINC429 interface adapters are arranged, and each ARINC429 interface adapter is connected to the data transmission and control bus through one ARINC429 communication interface. The inertial navigation simulation system automatically completes the configuration of the simulation environment according to the loaded hardware configuration and coding protocol when the inertial navigation simulation system simulation software runs by a method of carrying out data structure mapping and software entry, editing, storing and loading on the application test environment hardware configuration and interface control files, so that the simulation system has good maintainability, and the corresponding coding protocol is modified by configuring different interface control files, thereby reducing the maintenance cost of the test system.
In the inertial navigation simulation system provided by the invention:
the inertial navigation simulation controller is used for realizing the function of the inertial navigation system simulation software and realizing the receiving and sending of data information between the simulation software and an upper computer through an ARINC429 bus communication interface and an ARINC429 interface adapter; the inertial navigation system simulation software is used for simulating the actual data processing process of the inertial navigation system;
the data transmission and control bus is arranged in a case of the test controller and is used for realizing the transmission and exchange of data information of the inertial navigation simulation controller and the ARINC429 interface adapter and the transmission of control signals such as clock, trigger, synchronization and the like;
the ARINC429 bus communication interface is used for transmitting ARINC429 data information of the inertial navigation system, which is sent by the upper computer, to the inertial navigation simulation controller, receiving ARINC429 bus data sent by the inertial navigation simulation controller and sending the ARINC429 bus data to the upper computer;
the ARINC429 interface adapter is used for realizing the physical connection between an ARINC429 communication interface and an ARINC429 data bus and ensuring the smoothness of an ARINC429 data information transmission channel.
The inertial navigation system simulation software comprises a simulation control module, an interface control file coding management module, a channel configuration management module, a channel selection module, an initialization module, a protocol coding module, a data simulation module and a display module, wherein:
and the simulation control module is used for receiving the inertial navigation system operation data of the user and finishing the setting and editing of the inertial navigation parameters according to the input data.
The interface control file coding management module is used for converting an interface control file of the inertial navigation system into a message format file which can be identified by the inertial navigation system so as to be convenient to call, the message format file is composed of protocol information, the protocol information in the message format file adopts a file storage mode, and the protocol information is an example of a protocol coding data structure, wherein:
the protocol encoded data structure includes a signal label, a start bit, an end bit, a signal name, a scale factor, a sign bit, a data unit, or a signal description, wherein:
signal LABEL is signal identifier (LABEL) in ARINC429 word; the start bit and the end bit are valid start and end positions of ARINC429 data; the signal name is a physical name in a data domain in the interface control file; the scale factor is used for converting the actual physical quantity into an actual transmission signal of the ARINC429 bus in a proportional mode, the sign bit indicates that data is a positive value or a negative value, and the data unit or signal description is used for describing the unit of data or signal-related information.
The channel configuration management module is used for configuring the characteristics of an ARINC429 communication interface of the inertial navigation system, including the association of an ARINC429 board card number, a communication interface communication rate, a parity check mode and a message format file, and forming a channel configuration management file;
the channel selection module is used for selecting an ARINC429 communication interface required by the simulation system;
the data simulation module is used for storing the inertial navigation system operation data of the user into a data to-be-coded area;
the protocol coding module is used for coding data in a data to-be-coded area according to a message format file associated with the ARINC429 communication interface and sending the coded data to the corresponding ARINC429 communication interface according to the channel selection module.
The display module is used for transmitting the inertial navigation system operation data of the user to a man-machine interface for displaying the man-machine interface;
the initialization module is used for initializing the interface control file coding management module, the channel configuration management module, the protocol coding module and the data simulation module.
On the basis of the technical scheme, the invention further provides a simulation method of the inertial navigation simulation system based on the ARINC429 bus, which comprises the following steps:
firstly, a user extracts information in an interface control file of an inertial navigation system through a protocol coding module, and carries out operations such as editing, modifying, storing and the like, and converts the extracted information into a message format file;
secondly, the user converts the set information into a channel configuration management file through editing, modifying, storing and other operations of the channel configuration management module;
and thirdly, the user operates simulation software through the ARINC429 communication interface selected by the channel selection module, the simulation software automatically calls the initialization module and the protocol coding module, and the user performs simulation transmission through corresponding data of the simulation control module of the software.
Based on the technical scheme, the test system automatically completes the configuration of the test environment according to the loaded hardware configuration and the coding protocol when simulation software runs by adopting a method for mapping the data structure of the application test environment hardware configuration which is changed frequently and needs to be changed, and the inertial navigation simulation system based on the ARINC429 digital bus is not required to be re-developed and modified and maintained any more, so that the simulation system has good maintainability, the repeated development of the simulation system caused by the ARINC429 bus interface change of the inertial navigation system in the comprehensive test of the avionics system is avoided, the labor cost of the development of the test system is reduced, and the maintenance cost of the test system is reduced.
Referring to fig. 2, in an embodiment of the present invention, the emulation controller is a GETAC portable industrial personal computer X500 model with a PCI bus, the data transmission and control bus is a PCI bus, the ARINC429 communication interface is a GE company CEI520 communication interface card, the card has 8 transmission ports and can complete multi-port data transmission, the ARINC429 interface adapter selects an adapter matched with the CEI520 communication interface card, and the test software module is developed by QT 5.5.1. Fig. 3 and 4 are related operation interfaces of the simulation software.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equally replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application, and are intended to be included within the scope of the present application.
Claims (9)
1. An inertial navigation simulation system based on an ARINC429 bus is characterized by comprising an inertial navigation system simulation controller, a data transmission and control bus, an ARINC429 communication interface, an ARINC429 interface adapter and inertial navigation system simulation software, wherein the inertial navigation system simulation software is installed in the inertial navigation system simulation controller, a plurality of ARINC429 interface adapters are arranged, and each ARINC429 interface adapter is connected to the data transmission and control bus through one ARINC429 communication interface; the inertial navigation simulation system automatically completes the configuration of the simulation environment according to the loaded hardware configuration and coding protocol when the inertial navigation simulation system simulation software runs by a method of carrying out data structure mapping and software entry, editing, storage and loading on the application test environment hardware configuration and interface control files, and modifies the corresponding coding protocol by configuring different interface control files.
2. The ARINC429 bus-based inertial navigation simulation system of claim 1, wherein the inertial navigation simulation controller is used for realizing functions of inertial navigation simulation software, and realizes the receiving and sending of data information between the simulation software and an upper computer through an ARINC429 bus communication interface and an ARINC429 interface adapter; the inertial navigation system simulation software is used for simulating the actual data processing process of the inertial navigation system.
3. The ARINC429 bus-based inertial navigation simulation system of claim 1, wherein the data transmission and control bus is arranged in a chassis of the test controller and is used for realizing the transmission and exchange of data information of the inertial navigation simulation controller and the ARINC429 interface adapter and the transmission of clock, trigger and synchronous control signals.
4. The inertial navigation simulation system based on the ARINC429 bus of claim 1, wherein the ARINC429 bus communication interface is used for transmitting ARINC429 data information of the inertial navigation system, which is sent by the upper computer, to the inertial navigation simulation controller, and is also used for receiving ARINC429 bus data, which is sent by the inertial navigation simulation controller, and sending the data to the upper computer.
5. The inertial navigation simulation system based on the ARINC429 bus of claim 1, wherein the ARINC429 interface adapter is used for realizing the physical connection between an ARINC429 communication interface and an ARINC429 data bus and ensuring the smoothness of an ARINC429 data information transmission channel.
6. The ARINC429 bus-based inertial navigation simulation system according to claim 1, wherein the inertial navigation system simulation software comprises a simulation control module, an interface control file coding management module, a channel configuration management module, a channel selection module, a protocol coding module and a data simulation module, wherein:
and the simulation control module is used for receiving the inertial navigation system operation data of the user and finishing the setting and editing of the inertial navigation parameters according to the input data.
The interface control file coding management module is used for converting an interface control file of the inertial navigation system into a message format file which can be identified by the interface control file coding management module so as to be convenient to call, the message format file is composed of protocol information, the protocol information in the message format file adopts a file storage mode, and the protocol information is an example of a protocol coding data structure;
the channel configuration management module is used for configuring the characteristics of an ARINC429 communication interface of the inertial navigation system, including the association of an ARINC429 board card number, a communication interface communication rate, a parity check mode and a message format file, and forming a channel configuration management file;
the channel selection module is used for selecting an ARINC429 communication interface required by the simulation system;
the data simulation module is used for storing the inertial navigation system operation data of the user into a data to-be-coded area;
the protocol coding module is used for coding data in a data to-be-coded area according to a message format file associated with the ARINC429 communication interface and sending the coded data to the corresponding ARINC429 communication interface according to the channel selection module.
7. The ARINC429 bus-based inertial navigation simulation system of claim 1 wherein the inertial navigation system simulation software further comprises a display module and an initialization module wherein:
the display module is used for transmitting the inertial navigation system operation data of the user to a man-machine interface for displaying the man-machine interface;
the initialization module is used for initializing the interface control file coding management module, the channel configuration management module, the protocol coding module and the data simulation module.
8. The ARINC429 bus-based inertial navigation simulation system according to claim 1, wherein the protocol encoding data structure comprises a signal index, start bit, end bit, signal name, scale factor, sign bit, data unit or signal description, wherein:
signal labels are signal identifiers in the ARINC429 word; the start bit and the end bit are valid start and end positions of ARINC429 data; the signal name is a physical name in a data domain in the interface control file; the scale factor is used for converting the actual physical quantity into an actual transmission signal of the ARINC429 bus in a proportional mode, the sign bit indicates that data is a positive value or a negative value, and the data unit or signal description is used for describing the unit of data or signal-related information.
9. A simulation method of an inertial navigation simulation system based on an ARINC429 bus is characterized by comprising the following steps:
firstly, a user extracts information in an interface control file of an inertial navigation system through a protocol coding module, and carries out editing, modifying and storing operations, and converts the extracted information into a message format file;
secondly, the user converts the set information into a channel configuration management file through the editing, modifying and storing operations of the channel configuration management module;
and thirdly, the user operates simulation software through the ARINC429 communication interface selected by the channel selection module, the simulation software automatically calls the initialization module and the protocol coding module, and the user performs simulation transmission through corresponding data of the simulation control module of the software.
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| CN112540890A (en) * | 2021-01-27 | 2021-03-23 | 中国民航大学 | Application layer verification method and device of avionic bus test equipment |
| CN113534680A (en) * | 2021-07-20 | 2021-10-22 | 中航机载系统共性技术有限公司 | Adapter and hybrid test system based on ED-247 standard |
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Application publication date: 20210101 |
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