FAT32-format data file managing system
A technology for managing systems and data files, applied in file systems, file system management, electrical digital data processing, etc., can solve the problem that it is difficult to fully meet the requirements of airborne/missile application technical indicators, the system bandwidth is limited, and it is impossible to achieve multiple Data stream format file management and other issues, to achieve the effect of solving high-speed storage problems, improving efficiency, and reducing the number of times of direct access to disk media
Inactive Publication Date: 2015-01-21
凯迈(洛阳)测控有限公司
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Problems solved by technology
This type of image acquisition system has two obvious defects: (1) It is large in size and difficult to effectively guarantee its reliability.
(2) It is impossible to manage files in multiple data stream formats, and the system bandwidth is limited, so it is difficult to fully meet the requirements of airborne / missile application technical indicators
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[0025] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0026] This embodiment is illustrated with the data management in the large area array high-resolution aerial camera system. Under the special application conditions of airborne or missile-borne high-speed and large-capacity data management and storage, on the hardware platform based on the TMS320C6414DSP processor, the image The data is stored and managed as disk files in FAT32 format, such as figure 1 As shown, the system includes a digital camera connected in sequence, a Camera Link interface, an embedded image acquisition platform, a high-speed IDE interface and an electronic hard disk, and the present invention applies the data file system of the FAT32 format to the above-mentioned embedded image acquisition based on the TMA320C6414 processor The platform adopts the solid-state electronic disk with IDE interface to complete the storage ...
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The invention relates to a FAT32-format data file managing system, and belongs to the technical field of airborne / missile-borne surveillance cameras. According to the FAT32-format data file managing system, a TMS320C6414 processor, an FPGA and electronic hardware serve as hardware platforms, a layered structure is adopted, the FAT32-format data file managing system comprises a physical implementation layer, a data buffering layer and a file implementation layer module, wherein data of multiple sectors of the electronic hardware are read and written through the physical implementation layer by means of a standard ATA / ATAPI-6 UDMA4 data reading and writing mode, the currently-accessed data of the disk sectors are buffered through the data buffering layer by means of a bidirectional access chain list by developing a plurality of data buffering areas in a TMS320C6414 processor memory so that the data of the electronic disk sectors can be buffered and managed, and FAT32-format files are read and written through the file implementation layer according to the FAT32 file standard by calling an interface function of the data buffering layer. Due to the design, the number of times for directly having access to a disk medium can be reduced, the disk access efficiency is improved, and the purpose of storing mass data at a high speed is achieved.
Description
technical field [0001] The invention relates to a data file management system in FAT32 format, which belongs to the technical field of airborne / missile-borne reconnaissance cameras. Background technique [0002] In the application fields of embedded image acquisition systems such as aerospace reconnaissance, photography, and surveillance, large area array high-resolution aerial photography cameras have begun to be widely used, and the amount of image data has increased rapidly, and even multiple image data formats need to be processed in the same system . However, with the miniaturization of airborne / missile-borne imaging systems, system resources are extremely limited, and efficient file management of massive data has become a technical problem that embedded systems are currently facing. [0003] In order to realize the high-speed data acquisition and mass storage system of the camera, the ETX hardware platform based on the X86 architecture and the Linux or Windows operati...
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IPC IPC(8): G06F17/30
CPCG06F16/11
Inventor 张帆方喜波肖佑平王春江刘洋
Owner 凯迈(洛阳)测控有限公司