CN113238717B - Software-defined airborne equipment data storage system and storage method - Google Patents
Software-defined airborne equipment data storage system and storage method Download PDFInfo
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Abstract
The invention discloses a software-defined airborne equipment data storage method, which comprises the following steps: exposing the hardware resources to an application management module to realize the resource perception of an application layer to a hardware medium layer; the airborne equipment data to be stored are sent to the application algorithm layer, and the application layer requirements are also sent to the application algorithm layer, so that the application algorithm layer can sense the data to be stored and the application requirements; performing equipment data processing based on application awareness; carrying out file management of equipment data to be stored; implementing a transmission layer algorithm for equipping data to be stored; calling a driving program of an interface in a general interface layer, and writing file data and data to be stored into a hardware medium; and various data storage is completed in the storage medium. According to the invention, the hardware resources are exposed to the application layer, the hardware resources are fully transferred on the software layer to realize the data storage requirements in different applications, and the hardware updating iteration frequency is greatly reduced, so that the equipment application development time is reduced, the cost is reduced, and the technical risk is reduced.
Description
Technical Field
The invention relates to the field of data storage, in particular to a software-defined airborne equipment data storage system and a software-defined airborne equipment data storage method.
Background
The combination of the equipment and the airplane can give full play to the advantages of the equipment and the airplane, not only has the working capacity of the equipment, but also has the advantages of strong platform maneuverability, convenient use and the like, and has great value in numerous national economy and military applications.
The data rate of some airborne equipment is far higher than the data transmission rate of a wireless link, especially under the application scenes of remote work and complex terrain such as mountainous areas. Therefore, on-board data storage will be a main way for data storage of part of the on-board equipment, and becomes one of the hot spots of on-board equipment research.
Currently, the development of the data storage technology of the airborne equipment generally adopts a special hardware system design method aiming at one or more application scenes. Although the method can fully exploit the potential of a hardware system, the method has strong specificity, and has the problems of high development economy, time cost and great technical risk. Because the working mode, the algorithm, the action range and the like of the airborne equipment can be rapidly changed along with the application scene and the requirement, the type, the data rate, the working environment and the data generation time of the data to be stored can be changed along with the change. A single storage system developed by the dedicated model is clearly not able to meet this requirement.
Disclosure of Invention
In order to solve the technical problem, the invention provides a software-defined onboard equipment data storage system and a software-defined onboard equipment data storage method.
The technical scheme for solving the problems is as follows: a software-defined airborne equipment data storage system comprises a host end and an equipment end, wherein the host end consists of Application management software and a controller, the equipment end is a hardware medium, the system is designed in a layered mode and is divided into an Application Layer, an Application Algorithm Layer (AAL), a Common Interface Layer (CIL) and a hardware medium Layer, the Application management software is located in the Application Layer, the controller comprises the Application Algorithm Layer and the Common Interface Layer, and the hardware medium is located in the hardware medium Layer;
the application layer is used as the top layer of user software definition storage and comprises an application management module, the application management module displays exposed hardware resources, and a user loads various software algorithms on the visual application management module according to application requirements, calls the hardware resources to realize corresponding storage functions and realizes dynamic reconstruction of software and hardware;
the application algorithm layer is positioned between the application layer and the universal interface layer, realizes data interaction between the data storage system and external airborne equipment, performs various data processing on received data, and performs file management and data transmission layer algorithm realization on the data to be stored;
the universal interface layer is positioned between the hardware medium layer and the application algorithm layer, and exposes the sensed hardware medium information in the hardware medium layer to the application algorithm layer and the application layer, so that the host end acquires all the hardware medium information; simultaneously, providing a uniform standardized interface and a corresponding driving program;
the hardware medium layer is used for storing or caching data in the storage process, the hardware medium in the hardware medium layer comprises a cache medium and a storage medium, and the cache medium is a DDR3 SDRAM, FIFO or RAM power-down data volatile device and is used as a data cache in the data storage process; the storage medium is a flash memory array that receives and stores data.
The software-defined airborne equipment data storage system is characterized in that the controller comprises an airborne equipment data processing module, a file management module and a data transmission layer algorithm module;
the airborne equipment data processing module is used for receiving various data to be stored of airborne equipment and application demand information sent by the application management module, carrying out airborne data processing based on application perception, generating a data storage method comprising a file management method and a data transmission layer algorithm, and sending a generated result to the application management module, the file management module and the data transmission layer algorithm module;
the file management module executes 5 file management methods of FAT table query, FAT table update, FDT table query, FDT table update and data area write-in according to a file management method result generated by the airborne equipment data processing module, manages generation and write-in of file information of data to be stored, and sends result data and state to the application management module;
the data transmission layer algorithm module adopts different transmission layer algorithm strategies aiming at different applications according to a data transmission layer algorithm determined by the airborne equipment data processing module, relates to cache management, address mapping, garbage recovery, wear leveling and IO (input output) scheduling management operations, and sends result data and states to the application management module.
A software-defined on-board equipment data storage method, comprising the steps of:
the first step is as follows: directly exposing the hardware resources sensed by the universal interface layer to an application management module to realize the sensing of the hardware resources by the application layer;
the second step is that: the data of the airborne equipment to be stored is sent to the application algorithm layer, and meanwhile, the application management module sends the application layer requirements to the application algorithm layer, so that the host computer senses the data to be stored and the application requirements;
the third step: performing equipment data processing based on application awareness; according to the sensing-oriented application requirements, data processing is carried out on data to be stored and hardware resources according to data types, data rates, generation time, access heat data parameters, computing resources, cache resources, interface types, data transmission rates, storage medium characteristics and array hardware resources, storage methods of various data are determined in a classified mode, and occupied hardware resources and generated power consumption are evaluated;
the fourth step: carrying out file management of equipment data to be stored; managing the generation and writing of the file information of the data to be stored based on the storage method determined in the third step;
the fifth step: implementing a transmission layer algorithm for equipping data to be stored; the storage medium transmission layer algorithm is moved to a host computer end to be realized, and is combined with an application layer, the transmission layer algorithm result of the data processing in the third step is received, and corresponding transmission layer strategies are adopted aiming at different applications;
and a sixth step: calling a driving program of an interface in a general interface layer, and writing file data and data to be stored into a hardware medium;
the seventh step: and various data storage is completed in the storage medium.
In the third step, the data storage method comprises a file management method and a data transmission layer algorithm, wherein the file management method comprises 5 types of FAT table query, FAT table update, FDT table query, FDT table update and data area write.
In the third step, the data transmission layer algorithm comprises cache management, address mapping, garbage recovery, wear leveling and IO scheduling management operations;
the cache management realizes the cache of the generated data in the file management time and the medium data erasing time and solves the problem of data loss caused by the mismatching of the data generation rate and the storage rate;
the address mapping maps the logical address of the file management module to the physical address of the storage medium, and the storage medium transmission layer algorithm is moved to a host computer end to realize the address conversion;
the garbage recycling and the wear leveling are related to the reliability, the service life and the performance of the equipment, a global wear leveling and garbage recycling strategy is adopted, the use condition of the equipment is considered when the wear leveling or the garbage recycling is carried out, the condition of the whole storage system comprising a controller and a storage medium and the storage application requirement are comprehensively considered, and the garbage recycling is carried out when the data reading and writing operations are less;
and the IO scheduling schedules the IO interface to realize data transmission according to the interface condition of the general interface layer and the requirement of the application layer.
According to the software-defined airborne equipment data storage method, in the second step, the third step, the fourth step, the fifth step and the sixth step, the generated processing result, the method strategy and the sensed information are all sent to the application management module, and the application management module interacts with the operation of each step according to the application requirements.
In the software-defined airborne equipment data storage method, in order to realize good compatibility and expandability of equipment, the application algorithm layer encapsulates each hardware medium, is compatible with the operating environment of the host end, and displays the hardware medium to the application layer as character equipment, so that the hardware medium is directly exposed to the application layer; the application algorithm layer is independent for the management of each hardware medium, different algorithms are adopted for different applications, and the application algorithm layer works independently.
The invention has the beneficial effects that:
1. the storage method of the invention exposes the hardware resources to the application layer, fully transfers the hardware resources to realize the data storage requirements in different applications on the software level, carries out the standardized design on the CIL layer, can be compatible with various hardware media conforming to the standard interface and products of different manufacturers, and greatly reduces the update iteration frequency of the hardware, thereby reducing the equipment application development time, reducing the cost and reducing the technical risk.
2. In the storage method, the equipment data processing based on application perception not only aims at the data to be stored, but also comprehensively considers the perceived hardware resources and application requirements for data processing, determines the application-oriented file management method and the data transmission layer algorithm in a classification mode, and is high in applicability.
3. In the storage method, the software-defined storage medium transmission layer algorithm is transplanted to the host end for realization, different data storage methods are generated and called facing different applications, the efficiency is high, and the dependency on foreign storage data transmission layer RAID management chips is reduced.
Drawings
FIG. 1 is a block diagram of a memory system according to the present invention.
FIG. 2 is a flow chart of a storage method of the present invention.
Fig. 3 is a schematic diagram of a high-concurrency software-defined airborne equipment data storage structure.
Detailed Description
The invention is further described below with reference to the figures and examples.
The software definition method for storing the onboard equipment data is embodied as follows:
firstly, the data storage method of the airborne equipment is diversified and selectable. The signals acquired by the airborne equipment are of a wide variety including radar, communication, electronic reconnaissance, optical, etc. signals received even for loads of the same type are diverse, e.g. radar signals including synthetic aperture radar signals, warning radar signals, array radar signals. Different file management methods and data transmission layer algorithms are needed for storing different types of signals, so that the data storage method needs to be diversified and can be selected;
second, the hardware resources of the data store call are configurable. Under the condition of not changing a hardware resource architecture, allocating hardware resources on a software layer to realize a storage method determined according to storage application requirements and data processing, so that a set of hardware system can adapt to a plurality of data storage application requirements of onboard equipment;
thirdly, means for updating the data storage method are diversified. The program of the storage module can be remotely updated through an offline debugger.
As shown in fig. 1, a software-defined airborne equipment data storage system includes a host end and a device end, the host end is composed of application management software and a controller, and the device end is a hardware medium. The system is designed in a layered mode and is divided into an application layer, an application algorithm layer, a general interface layer and a hardware medium layer. The application management software is positioned in an application layer, the controller comprises an application algorithm layer and a general interface layer, and the hardware medium is positioned in a hardware medium layer.
The application layer is used as the top layer of the user software definition storage, and comprises an application management module which displays the exposed hardware resources. And a user loads various software algorithms on the visual application management module according to application requirements, calls hardware resources to realize corresponding storage functions, and realizes dynamic reconstruction of software and hardware.
The application algorithm layer is positioned between the application layer and the general interface layer, integrates and obtains hardware information of the equipment, encapsulates different hardware media, and receives and interprets upper-layer application end information through the specific application interface. Aiming at different applications, different equipment data storage methods are adopted according to the working states of the controller and the hardware medium, and the hardware resources are scheduled and used for realization. The application algorithm layer realizes data interaction between the data storage system and external airborne equipment, performs various data processing on received data, and realizes file management of data to be stored and transmission layer algorithm realization.
The controller comprises an airborne equipment data processing module, a file management module and a data transmission layer algorithm module.
The airborne equipment data processing module is used for receiving various data to be stored of airborne equipment and application demand information sent by the application management module, carrying out airborne data processing based on application perception, generating a data storage method comprising a file management method and a data transmission layer algorithm, and sending a generated result to the application management module, the file management module and the data transmission layer algorithm module.
The file management module executes 5 file management methods of FAT table query, FAT table update, FDT table query, FDT table update and data area write-in according to a file management method result generated by the airborne equipment data processing module, manages generation and write-in of file information of data to be stored, and sends result data and states to the application management module.
The data transmission layer algorithm module adopts different transmission layer algorithm strategies aiming at different applications according to a data transmission layer algorithm determined by the airborne equipment data processing module, relates to cache management, address mapping, garbage recovery, wear leveling and IO (input output) scheduling management operations, and sends result data and states to the application management module.
The universal interface layer is positioned between the hardware medium layer and the application algorithm layer, and exposes the sensed hardware medium information in the hardware medium layer to the application algorithm layer and the application layer, so that the host end acquires all the hardware medium information; and simultaneously provides a uniform standardized interface and a corresponding driver.
The hardware medium layer is used for storing or caching data in the storage process, the hardware medium in the hardware medium layer comprises a cache medium and a storage medium, and the cache medium is a DDR3 SDRAM, FIFO or RAM power-down data volatile device and is used as a data cache in the data storage process; the storage medium is a flash memory array that receives and stores data.
As shown in fig. 2, a software-defined on-board equipment data storage method includes the following steps:
the first step is as follows: hardware resources such as flash memory particles, cache, calculation and the like sensed by the universal interface layer are directly exposed to the application management module, so that the application layer senses the hardware resources.
The second step is that: the data of the airborne equipment to be stored are sent to the application algorithm layer, and meanwhile, the application management module sends the application layer requirements to the application algorithm layer, so that the host computer senses the data to be stored and the application requirements.
The third step: and carrying out equipment data processing based on application perception. And (3) for the perceived application requirements, according to the data type, the data rate, the generation time, the access heat data parameters, the computing resources, the cache resources, the interface type and the data transmission rate, the storage medium characteristics and the array hardware resources, performing data processing on the data to be stored and the hardware resources, determining storage methods of various data in a classified manner, and evaluating the occupied hardware resources and the generated power consumption.
The data storage method comprises a file management method and a data transmission layer algorithm, wherein the file management method comprises 5 types of FAT table query, FAT table update, FDT table query, FDT table update and data area write-in.
The data transmission layer algorithm comprises cache management, address mapping, garbage recovery, wear leveling and IO scheduling management operation.
The cache management realizes the cache of the generated data in the file management time and the medium data erasing time, and solves the problem of data loss caused by the mismatching of the data generation rate and the storage rate.
The address mapping maps the logical address of the file management module to the physical address of the storage medium, and the storage medium transmission layer algorithm is moved to the host end to realize the address conversion.
The garbage recycling and the wear leveling are related to the reliability, the service life and the performance of the equipment, a global wear leveling and garbage recycling strategy is adopted, the service condition of the equipment is considered when the wear leveling or the garbage recycling is carried out, the condition of the whole storage system comprising a controller and a storage medium and the storage application requirement are comprehensively considered, and the garbage recycling is carried out when the data reading and writing operations are less.
And the IO scheduling schedules the IO interface to realize data transmission according to the interface condition of the general interface layer and the requirement of the application layer.
The fourth step: carrying out file management of equipment data to be stored; and managing the generation and writing of the file information of the data to be stored based on the storage method determined in the third step.
The fifth step: implementing a transmission layer algorithm for equipping data to be stored; and the storage medium transmission layer algorithm is moved to a host end to be realized, is combined with an application layer, receives the transmission layer algorithm result of the data processing in the third step, and adopts corresponding transmission layer strategies aiming at different applications.
And a sixth step: and calling a driving program of an interface in the general interface layer, and writing the file data and the data to be stored into the hardware medium.
The seventh step: and various data storage is completed in the storage medium.
And in the second step, the third step, the fourth step, the fifth step and the sixth step, the generated processing result, the method strategy and the sensed information are all sent to an application management module. And the application management module interacts with each step of operation according to application requirements.
The storage requirements of the onboard equipment are complex and various, and the data storage inevitably has the performance requirements of high performance and low delay, so that the software defined data storage works in a highly concurrent mode, and the overall structural schematic diagram is shown in fig. 3. In order to realize good compatibility and expandability of the equipment, each hardware medium is encapsulated by the application algorithm layer and is compatible with the operating environment of the host, and the application layer is displayed as character equipment by the hardware medium, so that the hardware medium is directly exposed to the application layer. The application algorithm layer is independent for the management of each hardware medium, different algorithms are adopted for different applications, and the application algorithm layer works independently.
Claims (6)
1. A software-defined airborne equipment data storage system is characterized by comprising a host end and an equipment end, wherein the host end is composed of application management software and a controller, the equipment end is a hardware medium, the system is designed in a layered mode and is divided into an application layer, an application algorithm layer, a universal interface layer and a hardware medium layer, the application management software is located in the application layer, the controller comprises the application algorithm layer and the universal interface layer, and the hardware medium is located in the hardware medium layer;
the application layer is used as the top layer of user software definition storage and comprises an application management module, the application management module displays exposed hardware resources, and a user loads various software algorithms on the visual application management module according to application requirements, calls the hardware resources to realize corresponding storage functions and realizes dynamic reconstruction of software and hardware;
the application algorithm layer is positioned between the application layer and the universal interface layer, realizes data interaction between the data storage system and external airborne equipment, performs various data processing on received data, and performs file management and data transmission layer algorithm realization;
the universal interface layer is positioned between the hardware medium layer and the application algorithm layer, and exposes the sensed hardware medium information in the hardware medium layer to the application layer and the application algorithm layer, so that the host end acquires all the hardware medium information; simultaneously, providing a uniform standardized interface and a corresponding driving program;
the hardware medium layer is used for storing or caching data in the storage process, the hardware medium in the hardware medium layer comprises a cache medium and a storage medium, and the cache medium is a DDR3 SDRAM, FIFO or RAM power-down data volatile device and is used as a data cache in the data storage process; the storage medium is a flash memory array and receives and stores data;
the controller comprises an airborne equipment data processing module, a file management module and a data transmission layer algorithm module;
the airborne equipment data processing module is used for receiving various data to be stored of airborne equipment and application demand information sent by the application management module, carrying out airborne data processing based on application perception, generating a data storage method comprising a file management method and a data transmission layer algorithm, and sending a generated result to the application management module, the file management module and the data transmission layer algorithm module;
the file management module executes 5 file management methods of FAT table query, FAT table update, FDT table query, FDT table update and data area write-in according to a file management method result generated by the airborne equipment data processing module, manages generation and write-in of file information of data to be stored, and sends result data and state to the application management module;
the data transmission layer algorithm module adopts different transmission layer algorithm strategies aiming at different applications according to a data transmission layer algorithm determined by the airborne equipment data processing module, relates to cache management, address mapping, garbage recovery, wear leveling and IO (input output) scheduling management operations, and sends result data and states to the application management module.
2. A software-defined on-board equipment data storage method based on the data storage system of claim 1, characterized by comprising the steps of:
the first step is as follows: directly exposing the hardware resources sensed by the universal interface layer to an application management module to realize the sensing of the hardware resources by the application layer;
the second step is that: the airborne equipment data to be stored are sent to the application algorithm layer, and meanwhile, the application management module sends the application layer requirements to the application algorithm layer, so that the application algorithm layer senses the data to be stored and the application requirements;
the third step: performing equipment data processing based on application awareness; according to the sensing-oriented application requirements, data processing is carried out on data to be stored and hardware resources according to data types, data rates, generation time, access heat data parameters, computing resources, cache resources, interface types, data transmission rates, storage medium characteristics and array hardware resources, storage methods of various data are determined in a classified mode, and occupied hardware resources and generated power consumption are evaluated;
the fourth step: carrying out file management of equipment data to be stored; managing the generation and writing of the file information of the data to be stored based on the storage method determined in the third step;
the fifth step: implementing a transmission layer algorithm for equipping data to be stored; the storage medium transmission layer algorithm is moved to a host computer end to be realized, and is combined with an application layer, the transmission layer algorithm result of the data processing in the third step is received, and corresponding transmission layer strategies are adopted aiming at different applications;
and a sixth step: calling a driving program of an interface in a general interface layer, and writing file data and data to be stored into a hardware medium;
the seventh step: and various data storage is completed in the storage medium.
3. The software-defined airborne equipment data storage method of claim 2, wherein in the third step, the data storage method comprises a file management method and a data transmission layer algorithm, and the file management method comprises 5 of FAT table query, FAT table update, FDT table query, FDT table update and data area write.
4. The software-defined airborne equipment data storage method of claim 3, wherein in the third step, the data transmission layer algorithm comprises cache management, address mapping, garbage collection, wear leveling, IO scheduling management operations;
the cache management realizes the cache of the generated data in the file management time and the medium data erasing time and solves the problem of data loss caused by the mismatching of the data generation rate and the storage rate;
the address mapping maps the logical address of the file management module to the physical address of the storage medium, and the storage medium transmission layer algorithm is moved to a host computer end to realize the address conversion;
the garbage recycling and the wear leveling are related to the reliability, the service life and the performance of the equipment, a global wear leveling and garbage recycling strategy is adopted, the use condition of the equipment is considered when the wear leveling or the garbage recycling is carried out, the condition of the whole storage system comprising a controller and a storage medium and the storage application requirement are comprehensively considered, and the garbage recycling is carried out when the data reading and writing operations are less;
and the IO scheduling schedules the IO interface to realize data transmission according to the interface condition of the general interface layer and the requirement of the application layer.
5. The software-defined airborne equipment data storage method of claim 2, wherein in the second step, the third step, the fourth step, the fifth step and the sixth step, the generated processing results, the method policies and the sensed information are all sent to the application management module, and the application management module interacts with each step according to application requirements.
6. The software-defined airborne equipment data storage method of claim 2, wherein, in order to achieve good compatibility and expandability of the device, the application algorithm layer encapsulates each hardware medium, is compatible with the host-side operating environment, displays the hardware medium to the application layer as a character device, and thereby directly exposes the hardware medium to the application layer; the application algorithm layer is independent for the management of each hardware medium, different algorithms are adopted for different applications, and the application algorithm layer works independently.
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| 基于软件定义存储的小文件性能优化研究;徐敏等;《信息技术》;20210425(第2021年第4期);全文 * |
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| CN113238717A (en) | 2021-08-10 |
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Application publication date: 20210810 Assignee: Hunan Jingrui Photoelectric Technology Co.,Ltd. Assignor: HUNAN NORMAL University Contract record no.: X2023980033663 Denomination of invention: Software defined airborne equipment data storage system and storage method Granted publication date: 20220315 License type: Common License Record date: 20230316 |
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