CN110989975A - Avionics system functional requirement generation method, system and storage medium - Google Patents
Avionics system functional requirement generation method, system and storage medium Download PDFInfo
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Abstract
The invention discloses a method, a system and a storage medium for generating functional requirements of an avionics system, wherein the method for generating the functional requirements of the avionics system comprises the following steps: acquiring function information corresponding to a function module of an aircraft electronic system; constructing a functional architecture model of the aircraft electronic system according to the functional information; and performing iterative update on the functional architecture model and the function corresponding to the model to generate a corresponding functional requirement. The method not only improves the system design efficiency, reduces the system complexity, can effectively support the comprehensive design of the avionics system, but also can shorten the development period and save the development cost.
Description
Technical Field
The invention belongs to the technical field of avionics systems, and particularly relates to an avionics system functional requirement generation method, an avionics system functional requirement generation system, a storage medium and a terminal.
Background
The new generation of airplanes puts higher demands on the design capability of avionics systems, the avionics systems at the present stage have higher and higher integration degree along with the increasing complexity of the structure, and the traditional design method based on documents and codes can not meet the research and development requirements of the current avionics systems. Model-based system engineers apply formalization of modeling to support activities of system requirements, design, analysis, validation, and validation that start at the conceptual design phase and continue through to design development and all life cycle phases that follow. Demand capture, an important part of model-based system engineering, is an information gathering process, i.e., determining what a user needs.
Conventional demand capture methods include: interviewing, questionnaires, monographs, observational methods, which are suitable for simple, low risk systems, are not adequate in high risk, complex systems. Modern demand capture methods provide a deeper understanding of demand, one of which is a run-time scenario based approach.
The technology of scene analysis as demand capture refers to a method of putting a product to be developed in an operation scene and analyzing the expected behavior of the product in the scene so as to obtain a demand. The primary goal of capturing functional requirements is to define the activities of a target under a specific scenario, and each described activity can be regarded as a Function of the target under the specific scenario (Service Function), and the activity graph in the camels systems Modeler can help us to identify the related functions well so as to capture the related functional requirements. The activity graph comprises the elements of modules (action state and activity state), action flow, start node, end node, swim lane, information flow and the like.
However, with the increasing complexity of the system, it becomes more difficult to artificially write the functional requirements in the presence of a large number of elements such as identified functions (service functions) and a complex function tree structure for the existing method of capturing the functional requirements. In the process of completing the functional requirements from the function tree, a relevant technician needs to consider a large amount of interaction and control information of each service function, and the technician may not accurately and clearly write the corresponding functional requirements because the associated information interaction is too numerous and complicated. The problems of ambiguity or incapability of tracing the demand and the like can be caused by unclear or irregular expression of functional demand, so that potential negative influence is caused to a later system design stage; also, in the face of such a large number of inputs, it is difficult to artificially write the full functional requirements of the target system in a significant amount of time.
Disclosure of Invention
Objects of the invention
The invention aims to provide a method, a system, a storage medium and a terminal for generating functional requirements of an avionic system so as to solve the problems that the prior art cannot accurately and clearly write corresponding functional requirements, ambiguous or requirement-traceable problems may be caused by unclear or irregular expression of the functional requirements and the like.
(II) technical scheme
To solve the above problem, a first aspect of the present invention provides an avionics system functional requirement generation method, including: acquiring function information corresponding to a function module of an aircraft electronic system; constructing a functional architecture model of the aircraft electronic system according to the functional information; and carrying out iterative updating on the functional architecture model to generate corresponding functional requirements.
Further, the acquiring a functional module of an aircraft electronic system and functional information corresponding to the functional module specifically includes: establishing an activity diagram of an aircraft electronic system through operation scene analysis modeling; traversing the activity graph, and identifying different types of functional information in the activity graph; and extracting the function information corresponding to the function module from the activity diagram.
Further, the constructing a functional model of the aircraft electronic system according to the functional information specifically includes: converting the functional information into a functional description of an aircraft electronic system; and constructing a functional architecture model of the aircraft electronic system according to the functional description.
Further, the function information includes: control flow information and information flow; the control flow information is a condition for triggering a function of a function module and a condition for triggering a next function associated with the function;
an information flow is the information passed over all functional modules associated with the current functional module.
Further, the constructing a functional architecture model of the aircraft electronic system according to the functional information is specifically: predefining a functional requirement template of a functional requirement generation tool; and the functional requirement generating tool is combined with the functional information to generate functional requirements under an operation scene.
Further, the iteratively updating the functional architecture model specifically includes: and iteratively updating the functional architecture model and the function corresponding to the model from three aspects of grammar, semantics and pragmatics.
Further, still include: and performing simulation verification on the function architecture model and the functional requirement which are subjected to iterative updating.
According to another aspect of the invention, there is provided an avionics system functional requirements automatic generation system comprising: the acquisition module is used for acquiring the function information corresponding to the function module of the aircraft electronic system; the model construction module is used for constructing a functional architecture model of the aircraft electronic system according to the functional information; and the iteration updating module is used for performing iteration updating on the functional architecture model and the functional requirements corresponding to the model.
Further, the acquiring module specifically includes: the activity diagram generation unit is used for building an activity diagram of the aircraft electronic system through operation scene analysis modeling; the activity map traversing unit is used for traversing the activity map of the aircraft electronic system; and the extracting unit is used for extracting the function information corresponding to the function module from the activity diagram.
Further, the model building module specifically includes: the information conversion unit is used for converting the function information into function description of an aircraft electronic system; and the model construction unit is used for constructing a functional model of the aircraft electronic system according to the functional description.
Further, the function information includes: control flow information and information flow; the control flow information is a condition for triggering a function of a function module and a condition for triggering a next function associated with the function; the information flow is the information passed over all functional modules associated with the current functional module.
Further, the functional requirement automatic generation module specifically includes: the requirement predefining unit can self-define the functional requirement template according to the requirement; and the functional requirement editing unit can modify and edit the completed functional requirements.
Further, the iterative update module is specifically configured to: and iteratively updating the functional architecture model and the function corresponding to the model from three aspects of grammar, semantics and pragmatics.
Further, still include: and the verification module is used for performing simulation verification on the function architecture model which completes the iterative update and the functional requirement.
According to a further aspect of the present invention, there is provided a computer storage medium having a computer program stored thereon, which when executed by a processor, performs the steps of the method of any one of the above schemes.
According to a further aspect of the present invention there is provided a terminal comprising a memory, a display, a processor and a computer program stored on the memory and executable on the processor, the processor when executing the program implementing the steps of the method of any one of the above aspects.
The invention aims to provide an avionics system functional requirement automatic generation method, which comprises the following steps: starting from the top layer requirement of a top layer interest relevant party of the airplane, analyzing and carding according to the requirement of the relevant party to form airplane-level requirements; performing rationalization distribution according to the aircraft-level requirements to realize generation of traceable requirements of an avionics system; constructing the avionic system in a mode of modeling an operation scene by adopting a model-based system design method, and establishing an avionic system functional architecture model by identifying and converting the constructed model into related avionic system functional description; according to the functional architecture model and the relevant information, the functional requirements of the avionic system are automatically generated by utilizing an avionic system functional requirement automatic generation tool; and repeatedly iterating the avionic system functional architecture model and the avionic system functional requirements from three aspects of grammar, semantics and pragmatics, and performing simulation verification on the avionic system functional architecture model and the functional requirements.
(III) advantageous effects
The technical scheme of the invention has the following beneficial technical effects:
the method and the system not only improve the system design efficiency, reduce the system complexity, effectively support the comprehensive design of the avionics system, but also shorten the development period and save the development cost.
Drawings
Fig. 1 is a flow chart of an avionics system functional requirement generation method according to a first embodiment of the invention;
fig. 2 is a schematic diagram of an avionics system functional requirement automatic generation method according to an alternative embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, in a first aspect of the embodiments of the present invention, there is provided an avionics system functional requirement generation method, including:
s1: acquiring function information corresponding to a function module of an aircraft electronic system;
s2: constructing a functional architecture model of the aircraft electronic system according to the functional information;
s3: and carrying out iterative updating on the functional architecture model to generate corresponding functional requirements.
The method of the embodiment not only improves the system design efficiency, reduces the system complexity, can effectively support the comprehensive design of the avionics system, but also can shorten the development period and save the development cost.
Optionally, the obtaining of the functional module of the aircraft electronic system and the functional information corresponding to the functional module specifically includes: establishing an activity diagram of an aircraft electronic system through operation scene analysis modeling; traversing the activity graph, and identifying different types of functional information in the activity graph; and extracting the function information corresponding to the function module from the activity diagram.
Optionally, the building of the functional model of the aircraft electronic system according to the functional information specifically includes: converting the functional information into a functional description of the aircraft electronic system; and constructing a functional architecture model of the aircraft electronic system according to the functional description.
Optionally, the function information includes: control flow information and information flow;
control flow information is a condition that triggers a function of a functional module and a condition that triggers a next function associated with the function;
an information flow is the information passed over all functional modules associated with the current functional module.
Optionally, the step of constructing a functional architecture model of the aircraft electronic system according to the functional information specifically includes: predefining a functional requirement template of a functional requirement generation tool; and the functional requirement generating tool is combined with the functional information to generate functional requirements under the operation scene. The generation tool can be a modeling tool such as a Cameo Systems Modeler.
Optionally, the iteratively updating the functional architecture model specifically includes: and iteratively updating the functional architecture model and the function corresponding to the model from three aspects of grammar, semantics and pragmatics.
Optionally, the method further includes: and performing simulation verification on the function architecture model and the functional requirement which are subjected to iterative updating.
In another aspect of an embodiment of the present invention, there is provided an avionics system functionality demand automatic generation system, including: the acquisition module is used for acquiring the function information corresponding to the function module of the aircraft electronic system; the model construction module is used for constructing a functional architecture model of the aircraft electronic system according to the functional information; and the iteration updating module is used for performing iteration updating on the functional architecture model and the functional requirements corresponding to the model.
Optionally, the obtaining module specifically includes: the activity diagram generation unit is used for building an activity diagram of the aircraft electronic system through operation scene analysis modeling; the activity map traversing unit is used for traversing the activity map of the aircraft electronic system; and the extracting unit is used for extracting the function information corresponding to the function module from the activity diagram.
Optionally, the model building module specifically includes: the information conversion unit is used for converting the functional information into functional description of the aircraft electronic system; and the model building unit is used for building a functional model of the aircraft electronic system according to the functional description.
Optionally, the function information includes: control flow information and information flow; control flow information is a condition that triggers a function of a functional module and a condition that triggers a next function associated with the function; an information flow is the information passed over all functional modules associated with the current functional module.
Optionally, the functional requirement automatic generation module specifically includes: the requirement predefining unit can self-define the functional requirement template according to the requirement; and the functional requirement editing unit can modify and edit the completed functional requirements.
Optionally, the iterative update module is specifically configured to: and iteratively updating the functional architecture model and the function corresponding to the model from three aspects of grammar, semantics and pragmatics.
Optionally, the method further includes: and the verification module is used for performing simulation verification on the function architecture model which completes the iterative update and the functional requirement.
In a further aspect of embodiments of the present invention, there is provided a computer storage medium having a computer program stored thereon, the program, when executed by a processor, implementing the steps of any one of the methods described above.
In a further aspect of embodiments of the present invention, there is provided a terminal comprising a memory, a display, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of any one of the above methods when executing the program.
In an optional embodiment of the invention, a method for automatically generating functional requirements of an avionics system based on an operating scenario is provided, so as to realize early design support in a system requirement capture stage.
(1) To accomplish functional demand capture first the technician needs to model all the scenarios for the target system based on the Activity diagrams (Activity Diagram) in the memory Systems Modeler. Extracting all modules to obtain a series of functions (Service Function) through all the ergodic activity graphs; extracting all swim lane information in all activity maps may capture relevant user and interaction environments; all action flows (Control flows) and information flows (informationflows) can be extracted by traversing relevant branch merging, bifurcation merging and other structural information in the activity graph and interaction information among different modules. The elements are extracted, generalized and integrated, and the construction of a target system Function Tree (Function Tree) can be completed. The function tree can be used as an aid, and its defined function and structure information can help capture the functional requirements.
(2) After the Function tree architecture is established, a method for capturing functional requirements at the present stage is that people are needed to further analyze, and a document with clear structure and normalized text-type functional requirements is written according to the generated Function tree Function and structure based on each recognition Function (Service Function) and associated action Flow (ControlFlow), Information Flow (Information Flow), participants and interaction environment as input.
(3) The support tool is a plug-in residing on the memory Systems Modeler software platform, and can read all Information in the activity diagram, including Service Function, Control Flow, Information Flow, lane Information, and the like. The tool can effectively integrate the relevant information of the model, thereby completing the writing of the functional requirements. The tool can automatically write the normalized functional requirements of the target system based on the structural information of the Function tree and a series of recognized elements such as the Service Function, the Control Flow and the like obtained in the early stage as input. The functional requirements are output in textual form and automatically classified under each corresponding identified function. Implementing automated generation of identified functional to functional requirements
At present, the way of processing functional requirements is mainly manual writing, no complete system is provided for automatically writing the functional requirements, the processing efficiency of manual writing is low, writing habits of everyone are different, the written text content format is not uniform, and management is difficult, but the embodiment has the advantages that,
(1) target information is automatically collected without manual participation, the labor intensity of technicians is reduced, and the recorded target information is uniform in format, so that reliable basis is provided for subsequent automatic generation;
(2) according to the captured target information, the standardized functional requirements of the target system are automatically compiled, the labor intensity of technical personnel is reduced, the formats of the functional requirements written by the system are uniform, grammatical or writing errors cannot be generated, the error rate is reduced, and later-stage searching and the like are facilitated;
(3) the tool can also classify the generated functional requirement items according to the function tree, so that the output functional requirements are more concise and clear, and the tool is more orderly compared with manual writing.
A schematic diagram of a method for automatically generating functional requirements of an avionics system based on a model is shown in fig. 2;
the Service Function is read, and the interaction information associated with the Service Function is read. These pieces of information include: control flow information, i.e., the conditions that trigger the function and the conditions that trigger the next function associated with the function; information flow, i.e., information delivered at all Service functions associated with the current Service Function. Lane information, including participants for each function, the system itself, and the interaction environment.
The tool processes and integrates the information, and automatically edits the functional requirements corresponding to all Service functions according to the grammar specification for generating the functional requirements, wherein the output approximate grammar format of the functional requirements is as follows:
"When bed ____ (obtained by identifying and analyzing action flow and information flow), the SOI hall ____ (extracting functional content and lane information of service function). "
The functional demand output is roughly composed of two parts:
precondition: the tool can extract the associated action flow and information flow of the current Service Function, and before extracting the action flow and information flow flowing to the identification Function and editing the action flow and information flow into the subject, the action flow and information flow are defined as the trigger condition of the Service Function, and the content of the trigger condition includes the action and information flowing to the identification Function. If the Service Function has no prepositive correlation information, no prepositive condition exists.
A main body part: the content information of the Service Function and the lane information of the Service Function are extracted and integrated into a main body character part of the normalized functional requirement.
And classifying the generated functional requirement items according to the function tree, and generating a target system functional requirement document.
The invention aims to protect an avionics system functional requirement generation method, which comprises the following steps: acquiring function information corresponding to a function module of an aircraft electronic system; constructing a functional architecture model of the aircraft electronic system according to the functional information; and identifying the function information to realize the automatic generation of the functional requirements and the iterative update of the functional architecture model and the function corresponding to the model. The method not only improves the system design efficiency, reduces the system complexity, can effectively support the comprehensive design of the avionics system, but also can shorten the development period and save the development cost.
Another aspect of the present invention is directed to an avionics system functionality requirements generation system, comprising:
the acquisition module is used for acquiring the function information corresponding to the function module of the aircraft electronic system; the model construction module is used for constructing a functional architecture model of the aircraft electronic system according to the functional information;
the functional requirement automatic generation module is used for customizing the template according to the requirement and generating corresponding functional requirements by combining the information of the functional module; and the iteration updating module is used for performing iteration updating on the functional architecture model and the functional requirements corresponding to the model.
The system not only improves the system design efficiency, reduces the system complexity, can effectively support the comprehensive design of the avionics system, but also can shorten the development period and save the development cost.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (16)
1. An avionics system functional requirement generation method, comprising:
acquiring function information corresponding to a function module of an aircraft electronic system;
constructing a functional architecture model of the aircraft electronic system according to the functional information;
and carrying out iterative updating on the functional architecture model to generate corresponding functional requirements.
2. The method according to claim 1, wherein the obtaining of the functional modules of the aircraft electronic system and the functional information corresponding to the functional modules specifically comprises:
establishing an activity diagram of an aircraft electronic system through operation scene analysis modeling;
traversing the activity graph, and identifying different types of functional information in the activity graph;
and extracting the function information corresponding to the function module from the activity diagram.
3. The method according to claim 1, characterized in that the building of the functional model of the aircraft electronic system from the functional information comprises in particular:
converting the functional information into a functional description of an aircraft electronic system;
and constructing a functional architecture model of the aircraft electronic system according to the functional description.
4. The method of claim 1, wherein the functional information comprises: control flow information and information flow;
the control flow information is a condition for triggering a function of a function module and a condition for triggering a next function associated with the function;
an information flow is the information passed over all functional modules associated with the current functional module.
5. Method according to claim 1, characterized in that the building of the functional architecture model of the aircraft electronic system from the functional information is in particular:
predefining a functional requirement template of a functional requirement generation tool;
and the functional requirement generating tool is combined with the functional information to generate functional requirements under an operation scene.
6. The method according to claim 1, wherein the iteratively updating the functional architecture model specifically comprises:
and iteratively updating the functional architecture model and the function corresponding to the model from three aspects of grammar, semantics and pragmatics.
7. The method of any one of claims 1-6, further comprising:
and performing simulation verification on the function architecture model and the functional requirement which are subjected to iterative updating.
8. An avionics system functional requirement automatic generation system, comprising:
the acquisition module is used for acquiring the function information corresponding to the function module of the aircraft electronic system;
the model construction module is used for constructing a functional architecture model of the aircraft electronic system according to the functional information;
and the iteration updating module is used for performing iteration updating on the functional architecture model and the functional requirements corresponding to the model.
9. The system of claim 8, wherein the obtaining module specifically comprises:
the activity diagram generation unit is used for building an activity diagram of the aircraft electronic system through operation scene analysis modeling;
the activity map traversing unit is used for traversing the activity map of the aircraft electronic system;
and the extracting unit is used for extracting the function information corresponding to the function module from the activity diagram.
10. The system according to claim 8, wherein the model building module comprises in particular:
the information conversion unit is used for converting the function information into function description of an aircraft electronic system;
and the model construction unit is used for constructing a functional model of the aircraft electronic system according to the functional description.
11. The system of claim 8, wherein the functional information comprises: control flow information and information flow;
the control flow information is a condition for triggering a function of a function module and a condition for triggering a next function associated with the function;
the information flow is the information passed over all functional modules associated with the current functional module.
12. The system according to claim 7, wherein the functional requirement automatic generation module specifically comprises:
a requirement predefining unit for self-defining the functional requirement template according to the requirement
And the functional requirement editing unit can modify and edit the completed functional requirements.
13. The system of claim 8, wherein the iterative update module is specifically configured to:
and iteratively updating the functional architecture model and the function corresponding to the model from three aspects of grammar, semantics and pragmatics.
14. The system of any one of claims 8-13, further comprising:
and the verification module is used for performing simulation verification on the function architecture model which completes the iterative update and the functional requirement.
15. A computer storage medium, characterized in that the storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the method according to any one of claims 1-7.
16. A terminal comprising a memory, a display, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method of any one of claims 1 to 7 when executing the program.
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