Data storage method and device
A data storage and data technology, applied in the field of data processing, can solve the problems of scrapped micro-nano satellites, unreadable data, poor protection ability of space high-energy particles, etc.
Inactive Publication Date: 2017-10-20
NAT UNIV OF DEFENSE TECH
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Problems solved by technology
Devices with space environment protection capabilities are significantly different from ordinary devices in design. Usually, the cost of devices with space environment protection capabilities is hundreds of times the cost of ordinary devices, so COTS devices have better protection against space high-energy particles and radiation. Poor, especially the memory on the micro-nano-satellite usually uses a commercial-grade FLASH chip for centralized data management. This memory chip has a high probability of failure under the impact and radiation of high-energy particles in space. If the memory chip fails, the data stored in it will not be readable, which will lead to the scrapping of the micro-nano satellite as a whole.
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[0056] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0057] figure 1 It is a schematic structural diagram of a satellite system provided in the embodiment of the present application.
[0058] Such as figure 1 As shown, the satellite system includes: backup memory 1, multiple payloads and multiple payload storages, wherein, see figure 1 , figure 1 Take three loads as an example, respectively...
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The invention relates to a data storage method and device. The method comprises the steps that a first load and a first load memory corresponding to the first load are controlled to be powered on to work, and a backup storage device is controlled not to be powered on; data generated by the first load is stored into the first load memory; whether the first load memory breaks down is judged; when the first load memory breaks down, a storage address of the first load is updated to be a storage address of the backup storage device; and the backup storage device is controlled to be powered on, and the data generated by the first load is stored into the backup storage device. By use of the method, data generated by a satellite system can be effectively stored, data security is high, the service life of the memory can be prolonged, and the overall service life of the satellite system is prolonged.
Description
technical field [0001] The present application relates to the technical field of data processing, and in particular to a data storage method and device. Background technique [0002] There are many ways to classify satellites, one of which is to classify them by weight, for example: 10-100 kg satellites are called micro-satellites, and 1-10 kg satellites are called nano-satellites. Micro-nano-satellite, a small satellite technology, has developed rapidly in recent years, and has rapidly changed from a simple university research and exploration field to a research field with obvious practical capabilities and huge commercial value. [0003] No matter what type of satellite, its basic task is to obtain on-orbit data, so on-board data storage and management is an important part of satellite design. Large satellites usually adopt a centralized data management method. There is a dedicated data management unit on the satellite. Each subsystem and payload transmits telemetry data ...
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IPC IPC(8): G06F3/06G06F11/14
CPCG06F3/0616G06F3/062G06F3/0638G06F11/1402
Inventor 陈小前陈利虎杨磊樊程广李松亭姚雯宋新
Owner NAT UNIV OF DEFENSE TECH