CN102183768B - Satellite fault rapid positioning system based on bus monitoring - Google Patents
Satellite fault rapid positioning system based on bus monitoring Download PDFInfo
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Abstract
The invention discloses a satellite fault rapid positioning system based on bus monitoring; a bus communication main node is responsible for polling telemetry data, distributing, and broadcasting data scheduling transmission to a bus communication slave node and a bus monitoring module on the bus; the bus communication slave node is responsible for acquiring the telemetry data of the system, and polling, receiving and broadcasting the data in response to the telemetry data of the bus communication main node; the bus monitoring module is mainly responsible for receiving, formatting and storing all communication data on the bus; an order sent from the ground is transferred to the bus monitoring module through a ground order control; the bus monitoring data at an appointed position is sequentially sent to a data transmission system according to the content of the order by the bus monitoring module, and then transmitted to the ground by the data transmission system; or the bus monitoring data polling at the appointed position is performed on the bus through the ground order control, the bus monitoring data is packed and processed to form the satellite telemetry data packet to be sent to a responder which is used for transmitting the satellite telemetry data packet to the ground; and the ground device performs the fault positioning or extracts the concerned satellite telemetry data according to the received bus monitoring data.
Description
Technical field
The present invention relates to a kind of satellite fault rapid positioning system, be applicable to satellite AIT stage and the satellite failure location in stage in orbit.
Background technology
At present, satellite telemetering data is satellite AIT stage and unique foundation of stage localization of fault in orbit.Satellite telemetering data commonly used is by the telemetry parameter that the bus communication host node produces voluntarily and gathers each subsystem by bus on star, and packing to process forms, and passes under answering machine on star.Telemetry is the unique channel that duty on star and health status are understood in ground.
Due to the complicacy of satellite system, during satellite failure, the raw data that is used for the location fault is very important.Owing to lacking relevant direct remote measurement evidence, cause the phenomenon that to carry out for a long time localization of fault and fix a breakdown after breaking down through being everlasting.Main cause has three, one, there is no the information exchanging process record, satellite bus is the main thoroughfare that on star, information is transmitted, the Telemetry Data Acquisition of satellite, remote-control data distribution, programmable data distribution, broadcast data transmission etc. all rely on bus to carry out, the on-board equipment fault generally can be embodied in information transmission or receiving course, often need to know whether information is correctly sent on bus, locates fault with this and appears at transmit leg or take over party.They are two years old, the descending telemetry code speed of Satellite TT answering machine is only 4096bps, be limited, satellite telemetering data only can reflect important telemetry parameter at present, but and the biography frequency down of telemetry parameter is affected, and relevant direct telemetry parameter easily occurs or designed telemetry parameter pass down the low not situation of faults phenomenon of frequency when satellite failure.They are three years old, the constraint of China geographic position and observing and controlling system, for satellite in Sun-synchronous orbit, 6-7 rail ring only arranged through China border every day, the time of at every turn passing by is subjected to descending telemetry code rate limit only about 10 minutes equally, only can transmit on a small quantity telemetry overseas, in case satellite breaks down overseas, the remote measurement that a small amount of delayed telemetry often can not reappear before and after fault changes.
Summary of the invention
Technology of the present invention is dealt with problems and is: when overcoming satellite failure, lack the deficiency that direct telemetry can not be located fast, a kind of satellite fault rapid positioning system based on bus monitoring is provided, all bus monitoring data can be stored and transmitted.The invention provides the positive evidence for the position location satellite fault, a kind of additional descending method of satellite data also is provided, namely dispatch bus communication and send bus broadcast from node, receive and send under answering machine by the bus communication host node and pass.
Technical solution of the present invention is: a kind of satellite fault rapid positioning system based on bus monitoring, the equipment that this system relies on comprise mainly on star that the bus communication node is that bus communication host node and bus communication are from node, bus monitoring module, number biography system and answering machine;
The bus communication host node is responsible for the bus communication on bus from node and bus monitoring module take remote measurement data polling, remote-control data distribution, broadcast data scheduled transmission;
Bus communication is responsible for the telemetry of this system self is gathered from node, and the telemetry poll of response bus communication host node, receives remote-control data and broadcast data;
The bus monitoring module possesses bus communication from the above-mentioned functions of node, and is responsible for communication datas all on bus is received, formats and stores; Control by surface instruction, the bus communication host node is transmitted to the bus monitoring module with the instruction that ground sends, the bus monitoring module sequentially sends on star number biography system according to the content of instruction with the bus monitoring data of assigned address, passes to ground by under several biography system; Or control by surface instruction, carry out the bus monitoring data polling of assigned address on bus, then packing is processed and is formed the satellite telemetering data bag and send to answering machine, passes to ground by under answering machine; Uphole equipment carries out localization of fault or extracts the satellite telemetering data of being concerned about according to the bus monitoring data that receive.
Described bus monitoring module also has fault tolerance, namely can automatically recovery record pattern during at the rail exceptional reset in the bus monitoring module and do not cover original record data and cause loss of data; When extremely correctly mapping logic subregion and Physical Extents concern, provide physical region sequentially to send data function in the bus monitoring module, as long as nonvolatile memory can be used, can obtain all record data.
Described bus monitoring module to the course of work that the bus monitoring data receive, format and store is: in the bus monitoring module, the data buffer is set, the bus monitoring module is with the laggard row cache of bus monitoring providing data formatting that monitors, after often being cached to regular length, the data of buffer memory are write in corresponding nonvolatile memory FLASH memory block.
Described bus monitoring module sequentially sends to the process of number biography on star system to be the bus monitoring data of assigned address:
(1) judge whether to receive " beginning logical partition data send " instruction that uphole equipment sends, if receive " beginning logical partition data send " instruction, change step (2) over to; If receive " beginning Physical Extents data send " instruction, change step (6) over to;
(2) send 2048 byte lead codes, change step (3) over to;
(3) according to the address that arranges in " beginning logical partition data send " instruction or the address that last time, sequential playback finished, carry out the data sequential playback, change step (4) over to;
(4) judge whether to receive " stopping sending " instruction or no data send finger and equal data storage pointer, if condition satisfies, change step (5) over to;
(5) preserve these data that sequentially send when finishing and send the address, change step (10) over to;
(6) send 2048 byte lead codes, change step (7) over to;
(7) according to the setting of " Physical Extents sequential playback data block " content, carry out the data sequential playback, change step (8) over to;
(8) judge whether to receive " stopping sending " instruction or the no Physical Extents that sends to the end transmission, if condition satisfies, change step (9) over to;
(9) preserve these data that sequentially send when finishing and send the address, change step (10) over to;
(10) leading code after transmission 2048 bytes, change step (11) over to;
(11) withdraw from this secondary data and send process.
Described bus monitoring module sends to the process of answering machine to be the satellite telemetering data bag:
(1) the bus monitoring module receives " bus is set sends the address date piece " that the bus communication host node sends, and the bus monitoring module is carried out bus data send the address pointer setting;
(2) after the bus monitoring module receives " bus data transmission preparation instruction ", carry out bus and send preparation;
(3) after the bus monitoring module receives " storage data polling instruction " that the bus communication host node sends by bus, address pointer according to current bus data transmission, order sends to the bus communication host node with the storage data of regular length as requested, and the preservation current data sequentially sends the address, use when send next time;
(4) the storage data of bus communication host node regular length that the bus monitoring module is sent and other telemetry are packaged into together the telemetry bag and send to answering machine, send to ground by answering machine.
The present invention compared with prior art beneficial effect is:
(1) the present invention is by introducing the complete bus communication data of bus monitoring module stores, but all playback of procedural information that the Telemetry Data Acquisition of satellite, remote-control data distribution, broadcast data transmission etc. rely on bus to transmit furnish abundant evidence for satellite AIT (general assembly and the test) stage with quick location of the satellite failure in rail stage.
(2) the invention provides two kinds of delivering paths, can pass system transmissions by number, also can transmit by answering machine, sometimes in order to save the satellite energy, pass at number and also can not check in rail bus monitoring data by the data that pass under answering machine when not working.Bus data function for monitoring of the present invention is not affected by the bus data transmission, guarantees the integrality that bus data monitors.
(3) the invention provides two kinds of fault-tolerant means, extremely can automatically recovery record pattern when rail resets in the bus monitoring module and do not cover original record data and cause loss of data; When extremely correctly mapping logic subregion and Physical Extents concern, provide physical region sequentially to send data function in the bus monitoring module, as long as nonvolatile memory can be used, can obtain all record data, be used for analyzing in the rail problem.
Description of drawings
Fig. 1 is system chart of the present invention;
Fig. 2 is the logical partition storage format definition figure of bus monitoring module of the present invention;
Fig. 3 is the transmitted waveform of LVDS interface of the present invention;
Fig. 4 is that the data of bus monitoring module of the present invention send workflow diagram.
Embodiment
System chart of the present invention as shown in Figure 1.In Fig. 1, slave computer 1 is each subsystem equipment (bus communication is from node) that is articulated on platform bus to slave computer N, slave computer M is each subsystem equipment (bus communication is from node) that is articulated on the load bus to slave computer M+N, and these slave computers produce telemetry parameter.In Fig. 1, the bus communication host node is as the host node of platform bus and load bus, be responsible for platform bus and load bus are carried out management and running work, each bus communication of poll is from the telemetry of node, and sends to each bus communication to carry out from node instruction or data block.In Fig. 1, number biography system mainly is responsible for setting up a satellite and passes link under the high-speed data on ground, and the data based requirement of bus monitoring module stores is sent to ground.
In Fig. 1, answering machine mainly is responsible for setting up a satellite to remote control, the Telemetry Data link on ground, and the data based requirement of satellite telemetering data and bus monitoring module stores is sent to ground.
The bus communication host node carries out telemetry poll, remote-control data distribution, broadcast data scheduled transmission etc. on bus; The bus communication host node in the course of work in each cycle is:
Gather each bus communication of whole star from the telemetry of node by bus; By bus broadcast bus communication host node telemetry to specifying the bus monitoring address; As required by the bus scheduling bus communication from the telemetry of node to specifying the bus monitoring address; Distribute remote-control data to each bus communication from node by bus; Send broadcast data to the designated broadcast address by the bus scheduling bus communication from node.The bus communication host node can adopt existing common technology means to realize, is known to the skilled person general knowledge, does not need to be elaborated.
In Fig. 1, Star Service bus monitoring module mainly is responsible for the various data of transmitting on bus are carried out Storage and Processing by certain form, and emphasis of the present invention is namely bus monitoring module workflow design.
Bus monitoring module and Functional Design thereof, workflow design are keys of the present invention, and the Functional Design of bus monitoring module is as follows:
(1) receive the bus monitoring data
The bus monitoring module begins by all bus datas that send (not containing the storage data that send regular length) and monitor of form sequential storage after receiving " carry out bus monitoring and storage " instruction, stops after receiving " not carrying out bus monitoring stores " instruction.
All bus datas are by the bag storage, and data packet format (16 byte) is as follows:
The multi-disc memory buffer is set in the bus monitoring module, all transmissions and the bus data that monitors is buffered in the data buffer by data packet format, after a data buffer stores is full, in the data write non-volatile memory in this buffer zone.
(2) data that receive are stored
The bus monitoring module provides 6000 logic regions for the user, each logic region 128K byte.Logic region and physical region be mapped in bus monitoring module software erasure error or write error the time independently complete or receive dependent instruction and carry out.Storage format such as Fig. 2 in logical partition:
A memory block form (16 byte) is as follows:
Corresponding nonvolatile memory write address pointer is set in software, and software writes data in corresponding data storage area according to write pointer, and write pointer is upgraded.The write operation sequential loop of data is carried out, and after writing the respective stored space, write pointer is turned back to No. 0 logical partition first address and proceeds data and write.
(3) data of storage sent
When the bus monitoring module passes system boot at number, according to instruction, the data of storage are sent to several biography system by special-purpose LVDS interface.Process of transmitting as shown in Figure 4, concrete steps are as follows:
After the bus monitoring module receives " beginning LVDS sends instruction ", at first send the lead code of 2048 bytes, lead code is fixed as 55H.Then carrying out data according to the address of order last time transmission end address or instruction appointment sequentially sends, until receive " stop LVDS and send instruction ", or when judging the data send finger more than or equal to data storages pointer, stop this secondary data order process of transmitting, and the preservation current data sequentially sends the address.After receiving " stop LVDS and send instruction ", if the bus monitoring module is sending data, after these group data are sent completely, stop sending and the transmission data pointer of this moment is sequentially increased rear preservation; If the bus monitoring module does not send data, the data that will preserve before sequentially send the address and store, and as the start address that sends data, send afterwards the rear leading code of 2048 bytes when send data next time, and rear leading code is fixed as AAH.
The bus monitoring module is carried out data by the LVDS interface with several biography system and is sent, and the transmission form of data is that three line lockings send, and comprises gate-control signal, clock signal and data-signal.The bus monitoring module has the function that the LVDS interface with several biography system is enabled to control, before receiving " beginning LVDS sends instruction " instruction, or after " stop LVDS and send instruction ", utilization enables to control, and makes its interface with number biography system comprise clock signal and data, gate-control signal output invalid (high resistant) state.The transmitted waveform of LVDS as shown in Figure 3.
(4) erase feature of data memory area
Characteristic according to the FLASH memory device, carry out to wipe the device appointed area before write operation at every turn, under normal circumstances, because the erase operation of FLASH needs the regular hour, therefore the bus monitoring module certain logic region being write when full, is wiped lower a slice logic region automatically.Owing to can't FLASH be carried out write operation in the erase operation process, reserve enough data buffers according to the erasing time during bus monitoring modular design and preserve the various packets that send on bus simultaneously, satisfy the requirement that data are not lost.
(5) management of bad piece of data memory area
The function that the bus monitoring module has automatic identification and picks out bad piece of memory block, and set up the piece mapping table, if the bus monitoring module monitors is to certain bad piece, automatically this block address is indicated and picks out, utilize simultaneously the address data area in spare space to shine upon this defect block addresses, thereby substitute this bad piece, guarantee simultaneously the continuous of memory space address.
To the memory block mapping table, have three and get two safeguard measures, and reflect that in telemetry bad piece accounts for the quantity of whole data storage area.
(6) data of storage pass by under answering machine
The bus monitoring module arranges bus data and sends address pointer, and this pointer is defaulted as the data storage area first address when the bus monitoring module powers up; Receive that the bus communication host node sends bus be set send the address date piece time, be updated to the address be set; During every transmission one frame bus monitoring module stores data, be updated to the memory address that send data next time.
The bus monitoring module is after being set to " memory data bus sends and prepares " mode, receive the storage data polling that the bus communication host node sends by bus, send address pointer according to current bus data, send in order the storage data of regular length, and the preservation current data sequentially sends the address, use when send next time.
Table 1 bus monitoring module arranges bus and sends the address date block format
Table 2 bus monitoring module stores data telemetry transformat
(7) self remote measuring and controlling design
Mainly complete and the bus communication host node between communication, specifically comprise following several process:
A. the bus communication host node is by the telemetry poll of bus to the transmission of bus monitoring module, and the bus monitoring module sends telemetry or storage data to the bus communication host node as requested.
B. the bus communication host node carries out the remote-control data distribution by bus to the bus monitoring module.The bus monitoring module receives the remote-control data of bus communication host node transmission and does and reply.The bus monitoring module also receives the broadcast data of bus communication host node transmission or receives the broadcast scheduling of bus communication host node, sends the data of appropriate address to bus.。
C. receive all bus monitoring data by bus.
The bus monitoring module receive instruction with and execution requirements as shown in table 3.
The indirect instruction of table 3 bus monitoring module data arranges
Table 4 bus monitoring module Physical Extents sequential playback data block format
Bus monitoring module self telemetry with and define as shown in table 5.
Table 5 bus monitoring module telemetry (example)
(8) the bus monitoring template pattern recovers design automatically
The bus monitoring module is shown information such as (are file allocation table, are used for recording the detailed data of storage file) to the different subregion of FLASH, for automatic recovery mode of operation after outage or hot reset by storing three parts of FAT.The bus monitoring module power on or hot reset after, the information such as FAT table are carried out three get two comparisons, if three get two and compare successfully, recover the mode of operation before outage or hot reset; Otherwise enter the acquiescence duty, do not monitor and the memory bus data, do not carry out memory data bus and send to prepare, do not send to several biography system by LVDS.The bus monitoring module power on or hot reset after, the bus monitoring module is not carried out bad piece inspection to the FLASH storer automatically, keeps the data in former FLASH.
Although disclose for the purpose of illustration most preferred embodiment of the present invention and accompanying drawing, it will be appreciated by those skilled in the art that: without departing from the spirit and scope of the invention and the appended claims, various replacements, variation and modification are all possible.Therefore, the present invention should not be limited to most preferred embodiment and the disclosed content of accompanying drawing.
The content that is not described in detail in instructions of the present invention belongs to the known prior art of this area professional and technical personnel.
Claims (4)
1. satellite fault rapid positioning system based on bus monitoring is characterized in that: the equipment that this system relies on comprises mainly on star that the bus communication node is that bus communication host node and bus communication are from node, bus monitoring module, number biography system and answering machine;
The bus communication host node is responsible for the bus communication on bus from node and bus monitoring module take remote measurement data polling, remote-control data distribution, broadcast data scheduled transmission;
Bus communication is responsible for the telemetry of this system self is gathered from node, and the telemetry poll of response bus communication host node, receives remote-control data and broadcast data;
The bus monitoring module possesses bus communication from the above-mentioned functions of node, and is responsible for communication datas all on bus is received, formats and stores; Control by surface instruction, the bus communication host node is transmitted to the bus monitoring module with the instruction that ground sends, the bus monitoring module sequentially sends on star number biography system according to the content of instruction with the bus monitoring data of assigned address, passes to ground by under several biography system; Or control by surface instruction, carry out the bus monitoring data polling of assigned address on bus, then packing is processed and is formed the satellite telemetering data bag and send to answering machine, passes to ground by under answering machine; Uphole equipment carries out localization of fault or extracts the satellite telemetering data of being concerned about according to the bus monitoring data that receive;
Described bus monitoring module sends to the process of answering machine to be the satellite telemetering data bag:
(1) the bus monitoring module receives " bus is set sends the address date piece " that the bus communication host node sends, and the bus monitoring module is carried out bus data send the address pointer setting;
(2) after the bus monitoring module receives " bus data transmission preparation instruction ", carry out bus and send preparation;
(3) after the bus monitoring module receives " storage data polling instruction " that the bus communication host node sends by bus, address pointer according to current bus data transmission, order sends to the bus communication host node with the storage data of regular length as requested, and the preservation current data sequentially sends the address, use when send next time;
(4) the storage data of bus communication host node regular length that the bus monitoring module is sent and other telemetry are packaged into together the telemetry bag and send to answering machine, send to ground by answering machine.
2. a kind of satellite fault rapid positioning system based on bus monitoring according to claim 1, it is characterized in that: described bus monitoring module also has fault tolerance, namely can automatically recovery record pattern during at the rail exceptional reset in the bus monitoring module and do not cover original record data and cause loss of data; When extremely correctly mapping logic subregion and Physical Extents concern, provide physical region sequentially to send data function in the bus monitoring module, as long as nonvolatile memory can be used, can obtain all record data.
3. a kind of satellite fault rapid positioning system based on bus monitoring according to claim 1 and 2, it is characterized in that: described bus monitoring module to the course of work that the bus monitoring data receive, format and store is: in the bus monitoring module, the data buffer is set, the bus monitoring module is with the laggard row cache of bus monitoring providing data formatting that monitors, after often being cached to regular length, the data of buffer memory are write in corresponding nonvolatile memory FLASH memory block.
4. a kind of satellite fault rapid positioning system based on bus monitoring according to claim 1 and 2 is characterized in that: described bus monitoring module sequentially sends to the process of number biography on star system to be the bus monitoring data of assigned address:
(1) judge whether to receive " beginning logical partition data send " instruction that uphole equipment sends, if receive " beginning logical partition data send " instruction, change step (2) over to; If receive " beginning Physical Extents data send " instruction, change step (6) over to;
(2) send 2048 byte lead codes, change step (3) over to;
(3) according to the address that arranges in " beginning logical partition data send " instruction or the address that last time, sequential playback finished, carry out the data sequential playback, change step (4) over to;
(4) judge whether to receive " stopping sending " instruction or no data send finger and equal data storage pointer, if condition satisfies, change step (5) over to;
(5) preserve these data that sequentially send when finishing and send the address, change step (10) over to;
(6) send 2048 byte lead codes, change step (7) over to;
(7) according to the setting of " Physical Extents sequential playback data block " content, carry out the data sequential playback, change step (8) over to;
(8) judge whether to receive " stopping sending " instruction or the no Physical Extents that sends to the end transmission, if condition satisfies, change step (9) over to;
(9) preserve these data that sequentially send when finishing and send the address, change step (10) over to;
(10) leading code after transmission 2048 bytes, change step (11) over to;
(11) withdraw from this secondary data and send process.
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| CN102521953B (en) * | 2011-11-15 | 2013-05-01 | 北京空间飞行器总体设计部 | Method for recording and downloading satellite measured and controlled telemetry parameters of invisible arc section |
| CN103248675A (en) * | 2013-04-23 | 2013-08-14 | 浪潮电子信息产业股份有限公司 | Polling method for monitoring state of server hardware |
| CN103472446A (en) * | 2013-09-09 | 2013-12-25 | 成都市未来合力科技有限责任公司 | Channel intelligent switching control management method of secondary surveillance radar test responder |
| CN105137214B (en) * | 2015-06-23 | 2018-05-22 | 中国空间技术研究院 | A kind of satellite bus data analysis system |
| CN107273043A (en) * | 2017-04-28 | 2017-10-20 | 中国人民解放军国防科学技术大学 | Date storage method and device |
| CN109188471B (en) * | 2018-06-19 | 2020-09-08 | 上海卫星工程研究所 | Satellite fault diagnosis method based on software implementation |
| CN114442057B (en) * | 2022-01-25 | 2022-08-26 | 国家卫星海洋应用中心 | Microwave scatterometer load fault positioning method and system based on HY2 satellite |
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| CN101788817B (en) * | 2010-01-29 | 2011-11-16 | 航天东方红卫星有限公司 | Fault recognition and processing method based on satellite-bone bus |
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