CN113741813B - Load data-on-demand playback realization system, method, medium and equipment - Google Patents
Load data-on-demand playback realization system, method, medium and equipment Download PDFInfo
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- CN113741813B CN113741813B CN202110956843.9A CN202110956843A CN113741813B CN 113741813 B CN113741813 B CN 113741813B CN 202110956843 A CN202110956843 A CN 202110956843A CN 113741813 B CN113741813 B CN 113741813B
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000013500 data storage Methods 0.000 claims abstract description 50
- 238000004590 computer program Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
- G06F3/0643—Management of files
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
- G06F3/064—Management of blocks
Abstract
The invention provides a load data-on-demand playback realization system, a method, a medium and equipment, comprising a data multiplexing module and a data storage module; the data multiplexing module periodically broadcasts time information to the data storage module through an internal bus; the data storage module starts self-timekeeping in the period after receiving the broadcasting time information; and when the data storage module writes the load data into the FLASH memory each time, a file attribute table is built in the MRAM memory, and after the data storage module receives a ground load playback instruction, the data storage module automatically reads corresponding load data from the page address of the corresponding load according to a time period index contained in the instruction in the file attribute table and transmits the corresponding load data to the data multiplexing module for downlink. According to the invention, the accurate playback of the payload data is realized according to the accurate time of the payload data storage and the VCID automatic on-demand downlink mode.
Description
Technical Field
The invention relates to the technical field of load data storage and playback, in particular to a load data on demand playback realization system, a method, a medium and equipment.
Background
At present, a data storage module of a near-earth spacecraft commonly adopts sequential recording/playback; according to the mode of continuous playback of file numbers, time and multiple files, the mode has certain limitation under the condition of shortage of data transmission channel resources in deep space, so a method for automatically realizing accurate data play playback according to recording time and load VCID is designed, the problem of insufficient margin of the data transmission channel in deep space is solved, the accurate data play playback of effective load data is improved, and the method has better applicability and popularization.
Patent document CN104253719a (application number: CN 201410461829.1) discloses a telemetry bit error test method based on packet telemetry filling data, mainly describing that observation of real-time telemetry is not affected in the process of bit error rate statistics by using the packet telemetry filling data, but the patent is not related to the aspect of load data filling.
Patent document CN101304408A (application number: CN 200810018359.6) discloses a processing method of remote sensing satellite load data, mainly describing a method of storing and retrieving load data according to address information, however, the patent does not relate to storage implementation according to time information, and does not relate to description of load data filling requirements.
Patent document CN102081158A (application number: CN 200910199671.4) discloses a polar orbit meteorological satellite load data recording system, which uses a bus to transmit internal instructions, and then uses a CPU to operate a load data recording mode control circuit, so as to realize selection when recording load data in different satellite working modes. However, this patent is not directed to the description of the load data filling requirements.
Patent document CN104503305a (application number: CN 201410704590.6) discloses a signal playback method of a signal playback module based on a load floor detector, which comprises the steps of: the FPGA receives a data signal from the main control computer through a PCIe bus and temporarily stores the data signal into the DDR cache; the FPGA receives a trigger signal from the main control computer through a PCIe bus to start signal playback; the FPGA filters and modulates the data signals, and then outputs the filtered and modulated data signals to the digital-to-analog conversion circuit; the digital-to-analog conversion circuit performs digital-to-analog conversion on the data signal to obtain an analog signal, and then outputs the analog signal to the filter circuit; the filtering circuit filters stray signals in the analog signals, and then outputs the analog signals to external equipment through two paths of DA output terminals. However, this patent is not directed to storage implementations in terms of time information, nor is it directed to the description of the payload data population requirements.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a load data-on-demand playback realization system, a method, a medium and equipment.
The load data-on-demand playback realization system provided by the invention comprises: a data multiplexing module and a data storage module;
the data multiplexing module periodically broadcasts time information to the data storage module through an internal bus;
the data storage module starts self-timekeeping in the period after receiving the broadcasting time information;
and when the data storage module writes the load data into the FLASH memory each time, a file attribute table is built in the MRAM memory, and after the data storage module receives a ground load playback instruction, the data storage module automatically reads corresponding load data from the page address of the corresponding load according to a time period index contained in the instruction in the file attribute table and transmits the corresponding load data to the data multiplexing module for downlink.
Preferably, the payload data is classified and stored according to the payload spacecraft identification SCID and the virtual channel identification VCID, and is used as a search index of the file attribute table.
Preferably, the file attribute table includes a FLASH recording time, a payload virtual channel identifier VCID and a FLASH page address.
Preferably, the ground payload playback instruction includes a playback start time, a playback end time, and a payload type.
The method for realizing load data-on-demand playback provided by the invention comprises the following steps:
step 1: periodically broadcasting time information to a data storage module broadcaster through an internal bus on a data multiplexing module, and after the data storage module receives the broadcasting time information, starting to be self-timed in the period, and maintaining the time synchronization of the data storage module and the on-board time;
step 2: respectively opening up different cache spaces for different loads, and carrying out classified storage;
step 3: when the data storage module writes the load data into the FLASH memory each time, a file attribute table is built in the MRAM memory;
step 4: after the data storage module receives the ground load data playback instruction, corresponding load data are read from the page address of the corresponding load according to the time period index contained in the instruction in the file attribute table, and the corresponding load data are sent to the data multiplexing module for descending.
Preferably, the payload data is classified and stored according to the payload spacecraft identification SCID and the virtual channel identification VCID, and is used as a search index of the file attribute table.
Preferably, the file attribute table includes a FLASH recording time, a payload virtual channel identifier VCID and a FLASH page address.
Preferably, the ground payload playback instruction includes a playback start time, a playback end time, and a payload type.
According to the present invention there is provided a computer readable storage medium storing a computer program which when executed by a processor implements the steps of the method.
The invention provides a load data-on-demand playback realization device, which comprises: a controller;
the controller comprises the computer readable storage medium storing the computer program which when executed by the processor realizes the steps of the load data play back realizing method; alternatively, the controller includes the load data-on-demand playback implementation system.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention solves the problem of time synchronism through the design of time on the data storage module broadcaster and the self-time conservation of the module by the periodicity of the data multiplexing module;
(2) According to the invention, different buffer spaces are respectively opened up for different loads according to SCID+VCID through the data storage module, so that the problem of classified storage of load data according to SCID+VCID is solved;
(3) According to the invention, the data storage module writes the load data into the FLASH every time, and simultaneously establishes the file attribute table in the MRAM, wherein the file attribute table contains FLASH recording time, load VCID, FLASH page address and other bad block information, and the like, so that the problem of accurate indexing of the subsequent load data is solved;
(4) According to the invention, after the data storage module plays back the instruction (comprising the play back starting time, the play back ending time, the load type and the like) according to the ground load data, the corresponding load data is read from the page address of the corresponding load according to the time period index contained in the instruction in the file attribute table automatically and is sent down to the data multiplexing module, so that the automatic on-demand down of the load data according to the accurate time and the load VCID is realized.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a block diagram of data storage file attributes.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
Examples:
the load data-on-demand playback realization system provided by the invention comprises: a data multiplexing module and a data storage module; the data multiplexing module periodically broadcasts time information to the data storage module through an internal bus; the data storage module starts self-timekeeping in the period after receiving the broadcasting time information; and when the data storage module writes the load data into the FLASH memory each time, a file attribute table is built in the MRAM memory, and after the data storage module receives a ground load playback instruction, the data storage module automatically reads corresponding load data from the page address of the corresponding load according to a time period index contained in the instruction in the file attribute table and transmits the corresponding load data to the data multiplexing module for downlink. And according to the SCID of the load spacecraft and the VCID of the virtual channel, classifying and storing the load data, and taking the load data as a search index of a file attribute table. The file attribute table comprises FLASH recording time, a load virtual channel identifier VCID and a FLASH page address. The ground payload playback instruction includes a playback start time, a playback end time, and a payload type.
The method for realizing load data-on-demand playback provided by the invention comprises the following steps: step 1: periodically broadcasting time information to a data storage module broadcaster through an internal bus on a data multiplexing module, and after the data storage module receives the broadcasting time information, starting to be self-timed in the period, and maintaining the time synchronization of the data storage module and the on-board time; step 2: respectively opening up different cache spaces for different loads, and carrying out classified storage; step 3: when the data storage module writes the load data into the FLASH memory each time, a file attribute table is built in the MRAM memory; step 4: after the data storage module receives the ground load data playback instruction, corresponding load data are read from the page address of the corresponding load according to the time period index contained in the instruction in the file attribute table, and the corresponding load data are sent to the data multiplexing module for descending. And according to the SCID of the load spacecraft and the VCID of the virtual channel, classifying and storing the load data, and taking the load data as a search index of a file attribute table. The file attribute table comprises FLASH recording time, a load virtual channel identifier VCID and a FLASH page address. The ground payload playback instruction includes a playback start time, a playback end time, and a payload type.
According to the present invention there is provided a computer readable storage medium storing a computer program which when executed by a processor implements the steps of the method.
The invention provides a load data-on-demand playback realization device, which comprises: a controller; the controller comprises the computer readable storage medium storing the computer program which when executed by the processor realizes the steps of the load data play back realizing method; alternatively, the controller includes the load data-on-demand playback implementation system.
As shown in fig. 1, during the design of the data storage module, a buffer space is opened up separately according to the VCID, and a write pointer of the buffer space is returned for playback use according to the payload VCID.
When the payload generates data of n (n > 1) page data amount (vcid=0x7d51) in a certain job, the on-board time 0 xabccdd and the corresponding page address 0x00112233 are automatically written into MRAM storage at the time when the 1 st page payload data is written into the FLASH storage medium; when the 2 nd page load data is written into the FLASH storage medium, the on-device time 0 XAABCCEE and the corresponding page address 0x00112236 are automatically written into the MRAM storage; when the 3 rd page load data is written into the FLASH storage medium, the on-device time 0 XAABCCFF and the corresponding page address 0x00112238 are automatically written into the MRAM storage; when the N-th page load data is written into the FLASH storage medium, the on-device time 0XAABB55DD and the corresponding page address 0x00112253 are automatically written into the MRAM storage;
at this time, the data storage module has established corresponding file attribute information, and when the ground sends a playback command of the payload data 7D51 from 0XAABBCC00 to 0XAABB55EE, the data storage module finds that only the data written with the payload in the time period 0XAABBCCDD to 0XAABB55DD, and automatically reads the payload data according to the corresponding page addresses 0x00112233, 0x00112236, 0x00112238, 0x0011224xx and 0x001122530 for multiplexing and downlink.
Those skilled in the art will appreciate that the systems, apparatus, and their respective modules provided herein may be implemented entirely by logic programming of method steps such that the systems, apparatus, and their respective modules are implemented as logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers, etc., in addition to the systems, apparatus, and their respective modules being implemented as pure computer readable program code. Therefore, the system, the apparatus, and the respective modules thereof provided by the present invention may be regarded as one hardware component, and the modules included therein for implementing various programs may also be regarded as structures within the hardware component; modules for implementing various functions may also be regarded as being either software programs for implementing the methods or structures within hardware components.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.
Claims (6)
1. A method for implementing load data-on-demand playback, characterized in that it is applied to a load data-on-demand playback implementing system, said system comprising: a data multiplexing module and a data storage module;
the data multiplexing module periodically broadcasts time information to the data storage module through an internal bus;
the data storage module starts self-timekeeping in the period after receiving the broadcasting time information;
when the data storage module writes the load data into the FLASH memory each time, a file attribute table is built in the MRAM memory, and after the data storage module receives a ground load playback instruction, the data storage module automatically reads corresponding load data from the page address of the corresponding load according to a time period index contained in the instruction in the file attribute table and sends the corresponding load data to the data multiplexing module for descending;
according to the SCID of the load spacecraft and the VCID of the virtual channel, classifying and storing the load data, and taking the load data as a search index of a file attribute table;
the file attribute table comprises FLASH recording time, a load virtual channel identifier VCID and a FLASH page address;
the load data-on-demand playback implementation method comprises the following steps:
step 1: periodically broadcasting time information to a data storage module broadcaster through an internal bus on a data multiplexing module, and after the data storage module receives the broadcasting time information, starting to be self-timed in the period, and maintaining the time synchronization of the data storage module and the on-board time;
step 2: respectively opening up different cache spaces for different loads, and carrying out classified storage;
step 3: when the data storage module writes the load data into the FLASH memory each time, a file attribute table is built in the MRAM memory;
step 4: after the data storage module receives the ground load data playback instruction, corresponding load data are read from the page address of the corresponding load according to the time period index contained in the instruction in the file attribute table, and the corresponding load data are sent to the data multiplexing module for descending.
2. The payload data on-demand playback implementation of claim 1, wherein the ground payload playback instructions include a playback start time, a playback end time, and a payload type.
3. The method for realizing the video-on-demand playback according to claim 1, wherein the payload data is classified and stored according to the payload spacecraft identification SCID and the virtual channel identification VCID and is used as a search index of a file attribute table.
4. The method of claim 1, wherein the file attribute table includes a FLASH recording time, a payload virtual channel identification VCID, and a FLASH page address.
5. A computer readable storage medium storing a computer program, which when executed by a processor implements the steps of the method as claimed in claim 1.
6. A load on-demand playback enabling device, comprising: a controller;
the controller comprises a computer readable storage medium of claim 5 storing a computer program which, when executed by a processor, implements the steps of the load on demand playback implementation method of claim 1.
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| CN102136005A (en) * | 2011-03-29 | 2011-07-27 | 北京航空航天大学 | Data searching method and device |
| CN109981162A (en) * | 2019-03-27 | 2019-07-05 | 北京空间飞行器总体设计部 | Data processing and Transmission system suitable for inertial space pointing space astronomical satellite |
| CN110109872A (en) * | 2019-04-29 | 2019-08-09 | 北京空间飞行器总体设计部 | A kind of remote sensing satellite isomeric data unifies memory management unit |
| CN110334040A (en) * | 2019-07-09 | 2019-10-15 | 中国科学院国家空间科学中心 | A kind of spaceborne solid-state memory system |
| CN113220639A (en) * | 2021-03-15 | 2021-08-06 | 上海航天测控通信研究所 | File storage system control device for space application |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136005A (en) * | 2011-03-29 | 2011-07-27 | 北京航空航天大学 | Data searching method and device |
| CN109981162A (en) * | 2019-03-27 | 2019-07-05 | 北京空间飞行器总体设计部 | Data processing and Transmission system suitable for inertial space pointing space astronomical satellite |
| CN110109872A (en) * | 2019-04-29 | 2019-08-09 | 北京空间飞行器总体设计部 | A kind of remote sensing satellite isomeric data unifies memory management unit |
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