CN103135465A - Method for removing on-track latch faults of spread spectrum responder of spacecraft - Google Patents
Method for removing on-track latch faults of spread spectrum responder of spacecraft Download PDFInfo
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- CN103135465A CN103135465A CN2013100298340A CN201310029834A CN103135465A CN 103135465 A CN103135465 A CN 103135465A CN 2013100298340 A CN2013100298340 A CN 2013100298340A CN 201310029834 A CN201310029834 A CN 201310029834A CN 103135465 A CN103135465 A CN 103135465A
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Abstract
The invention provides a method for removing an on-track latch fault of a spread spectrum responder of a spacecraft. The method includes a first step of establishing a spread spectrum responder state relational table which is used for fixedly storing the corresponding relation between a current state of the spread spectrum responder and a next expectation state of the spread spectrum responder, and a second step of enabling a central processing unit (CPU) of a satellite data management subsystem to obtain the state of the spread spectrum responder during each acquisition cycle, and judging whether the acquired state of the spread spectrum responder accords with the corresponding expectation state recorded in the spread spectrum responder state relational table during the acquisition cycle through searching to the spread spectrum responder state relational table and judging whether the spread spectrum responder works properly. When continuous working abnormal states of the spread spectrum responder last the fixed quantity of state cycles, the CPU can judge that the on-track latch fault happens to the spread spectrum responder. At the moment, the CPU sends a spread spectrum responder power-off instruction and then resends a spread spectrum responder power-on instruction after ensuring that the spread spectrum responder is powered off in a delayed time interval. The one-time removal work of the latch fault of the spread spectrum responder is completed.
Description
Technical field
The present invention relates to a kind of fault handling method of spacecraft spread spectrum answering machine, be mainly used in the spread spectrum answering machine and occur in and carry out fault after the rail breech lock and independently remove.
Background technology
The spread spectrum answering machine is the visual plant of spacecraft tracking-telemetry and command subsystem, and the reception of the up remote-control data of spacecraft and the transmission of descending telemetry all will be completed through the spread spectrum answering machine.If the spread spectrum answering machine is at rail generation operation irregularity, the up-downgoing observing and controlling passage of spacecraft will disconnect so, thereby has influence on the normal operation of spacecraft.
Data handling subsystem is the duty of Real-time Obtaining spread spectrum answering machine, and real-time judge spread spectrum answering machine operation irregularity whether, in case determine spread spectrum answering machine operation irregularity independently send unlock command, makes it recover normal.
At present be mainly to adopt the method for regularly closing, open the spread spectrum answering machine to avoid spread spectrum answering machine abnormal breech lock, and there is no whether operation irregularity of real-time judge spread spectrum answering machine, though namely the spread spectrum answering machine whether operation irregularity all can be closed answering machine again opens.Therefore adopt this method, also the spread spectrum answering machine can be closed when the spread spectrum answering machine works, be closed to just to exist during opening in the spread spectrum answering machine and do not receive the risk of annotating instruction on ground.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, the release method of a kind of spacecraft spread spectrum answering machine in rail breech lock fault is provided, duty by digital quantity remote measurement Real-time Obtaining spread spectrum answering machine, and compare with corresponding answering machine operation irregularity criterion, thereby judge whether operation irregularity of spread spectrum answering machine, if abnormal independently send the breech lock that answering machine is removed in indirect instruction, strengthened spread spectrum answering machine reliability in orbit.
Technical solution of the present invention is: a kind of spacecraft spread spectrum answering machine is at the release method of rail breech lock fault, and step is as follows:
(1) set up spread spectrum answering machine state relation table, be used for the current state of fixed storage spread spectrum answering machine and the corresponding relation of next expectation state; Wherein the spread spectrum answering machine has 3 states at each period of state T, use respectively parameter 1, parameter 2 and parameter 3 expressions, the expectation state of parameter 1 state is parameter 2 states, the expectation state of parameter 2 states is parameter 3 states, and the expectation state of parameter 3 states is parameter 1 state;
(2) CPU (central processing unit) of satellite data handling subsystem is obtained the state of spread spectrum answering machine at each collection period Tc, by searching spread spectrum answering machine state relation table, the state of the spread spectrum answering machine that collects of judgement whether with spread spectrum answering machine state relation table in record whether consistent with expectation state corresponding to this collection period, if unanimously judge that the spread spectrum answering machine is working properly, return and re-execute this step; If inconsistent, judge spread spectrum answering machine operation irregularity, no longer the residual state of this period of state is differentiated and re-executed this step after the new period of state of the next one arrives, wherein T=3Tc;
(3) in the process of execution in step (2), record the number N of the abnormal period of state of spread spectrum answering machine continuous working, if after N surpasses preset value, judgement spread spectrum answering machine generation breech lock fault; Send spread spectrum answering machine cut-offing instruction this moment, after guaranteeing the shutdown of spread spectrum answering machine at time-delay certain hour interval, resends the spread spectrum answering machine and power up instruction, a clear-latch end-of-job of spread spectrum answering machine.
The present invention's advantage compared with prior art is:
(1) in the inventive method, the working status parameter of CTU Real-time Obtaining spread spectrum answering machine, think that the current state cycle is abnormal if the state parameter of the working status parameter that gets and expectation is inconsistent, if continuous 3 period of state operation irregularity judge spread spectrum answering machine operation irregularity all.Only just processing is closed, opened to the spread spectrum answering machine after the real abnormal of spread spectrum answering machine, so just can remove and lose the risk of annotating instruction on ground;
(2) CTU after determining answering machine abnormal breech lock, independently sends the instruction of answering machine clear-latch, does not need to annotate on ground instruction, and answering machine just can in time be recovered normally to have improved the reliability of answering machine operation on orbit.
Description of drawings
Fig. 1 is the cycle of states figure of spread spectrum answering machine;
Fig. 2 is the graph of a relation of the period of state of CTU collection period and spread spectrum answering machine;
Fig. 3 is the graph of a relation of the expectation state of spread spectrum answering machine current state and next collection period;
Fig. 4 differentiates in spread spectrum answering machine normal condition cycle and abnormality cycle and the processing example;
Fig. 5 is the process flow diagram of the inventive method.
Embodiment
At this, at first several concepts are described:
Status_cycle: the period of state of spread spectrum answering machine.Each period of state of spread spectrum answering machine has 3 state parameters, respectively parameter 1, parameter 2 and parameter 3, the sequential loop according to " parameter 1 → parameter 2 → parameter 3 " during the normal operation of spread spectrum answering machine changes, it is once a period of state that these 3 state parameters change successively, as shown in Figure 1.If the spread spectrum answering machine works all the time, will change according to the sequential loop of " parameter 1 → parameter 2 → parameter 3 " so.Whether normal 3 duties of 3 corresponding spread spectrum answering machines of state parameter are used for characterizing the work of spread spectrum answering machine, and these 3 state parameter values of the spread spectrum answering machine of different model may be different.
Collect_cycle: the collection period of CPU (central processing unit) (CTU).The CPU (central processing unit) of data handling subsystem (CTU) gathers the duty of spread spectrum answering machine take 1s as the cycle, the duty of spread spectrum answering machine changes after CTU gathers.Because each period of state of spread spectrum answering machine has 3 state parameters, CTU continuous acquisition 3 times (i.e. 3 collection period) is completed the collection of a period of state of answering machine so, as shown in Figure 2.
Current_status: the current state of spread spectrum answering machine.This state is the state that each collection period of CTU gets from the spread spectrum answering machine.
Expect_status: the expectation state of spread spectrum answering machine.This state be each collection period of CTU according to the current state that gets from the spread spectrum answering machine after, the expectation state of the next collection period that obtains of tabling look-up, as shown in Figure 3.
Status_cnt: Count of Status.Be used for recording the status number in the spread spectrum answering machine period of state that CTU judged.The Count of Status value is 0,1,2, respectively the state parameter of corresponding states in the cycle.Count of Status becomes at 2 o'clock and shows that the judgement of current state cycle is complete.
Fault_cycle_cnt: abnormal period counting.Be used for recording the period of state number of spread spectrum answering machine continuous abnormal.
Wait_new_cycle_flag: wait for new cycle status sign.Because period of state of spread spectrum answering machine has 3 state parameters, remaining state parameter has not judged with regard to not needing to remake if the current state cycle occurs extremely, and put this and be masked as very this moment, waits for after next period of state arrives and restarts judgement.
Rsp_fault_flag: spread spectrum answering machine abnormality mark.Be set to very if continuous 3 period of state of spread spectrum answering machine all extremely judge that the spread spectrum answering machine is abnormal, are about to this sign, CTU carries out the answering machine unlocking operation after this indicates determining.
The inventive method mainly comprises the judgement of spread spectrum answering machine breech lock and two chief components of clear-latch.
The process prescription that breech lock is judged is as follows:
CTU obtains its state parameter at each collection period from the spread spectrum answering machine, then judges whether it is the state parameter of expectation, if not, show that the current state cycle of spread spectrum answering machine is abnormal.If spread spectrum answering machine several (as 3) period of state continuously is all abnormal, judge spread spectrum answering machine breech lock.
If the spread spectrum answering machine is always working properly, CTU need to complete following work at each collection period:
(1) obtain the current state of spread spectrum answering machine.
(2) relatively whether current state and expectation state (this expectation state be last collection period table look-up obtain) be consistent.
(3) table look-up and obtain the expectation state of next collection period, record this expectation state, compare after next collection period.
If the state parameter that CTU determines in the period of state of spread spectrum answering machine is not the state parameter of expectation, show that this period of state is abnormal, the residual state parameter of this period of state no longer needs judgement so, directly waits for after next period of state arrives and restarts judgement.The state parameter of supposing first expectation of current state cycle is parameter 1, but the virtual condition parameter that CTU collects is not parameter 1, show that this period of state is abnormal, remaining two state parameters of this period of state just do not need judgement, directly wait for after next period of state arrives and restart judgement, as shown in Figure 4.The state parameter of supposing first expectation of current state cycle is correct, and second state parameter is abnormal, show that this period of state is abnormal, the remaining state parameter of this period of state does not just need judgement, directly waits for after next period of state arrives and restarts judgement.Suppose that the current state cycle state parameter of the first two expectation is correct, and the 3rd state parameter is abnormal, shows that this period of state is abnormal, waits for after next period of state arrives and restarts judgement.
CTU completes following work at first collection period in new state cycle:
(1) obtain the current state of spread spectrum answering machine.
(2) table look-up and obtain the expectation state of next collection period, record this expectation state, compare after next collection period.
The current state of spread spectrum answering machine and the corresponding relation of next expectation state see Table 1.
The expectation state mapping table of table 1 spread spectrum answering machine
| CTU collection period sequence number | Spread spectrum answering machine current state | Spread spectrum answering machine expectation state next time |
| 1 | Parameter 1 | Parameter 2 |
| 2 | Parameter 2 | Parameter 3 |
| 3 | Parameter 3 | Parameter 1 |
The process prescription of clear-latch is as follows:
CTU first sends spread spectrum answering machine cut-offing instruction after judging spread spectrum answering machine breech lock, (5s herein is engineering numerical value to interval 5s, that the spread spectrum answering machine is completed the needed time of outage, actual can the adjustment according to the model of concrete spread spectrum answering machine) send the spread spectrum answering machine after and power up instruction, thereby realize the breech lock trouble shooting of spread spectrum answering machine.The spread spectrum answering machine that CTU sends is cut off the power supply and is powered up instruction and is all the indirect switching instruction, does not need the ground intervening surface, belongs to the discretionary security control measure.
Spread spectrum answering machine breech lock of the present invention judge with the realization flow of removing as shown in Figure 5, concrete steps are described below:
(1) spread spectrum answering machine abnormality mark is initialized as vacation (expression spread spectrum answering machine is working properly), will waits for that new state cycle sign is initialized as true, Count of Status is initialized as 0, the abnormal period counting is initialized as 0, then enter next step;
(2) CTU obtains the current state of spread spectrum answering machine by the digital quantity remote measurement, then enters next step;
(3) judgement waits for whether new state cycle sign is true, if not for very turn step (4), if for very turn step (11);
Whether the current state that (4) judges the spread spectrum answering machine that remote measurement is obtained and expectation state (last collection period table look-up obtain) be consistent, if unanimously turn step (5), if the inconsistent step (13) that turns;
(5) according to current state table look-up (seeing Table 1) obtain the expectation state of next collection period spread spectrum answering machine, record this expectation state, for next collection period relatively, then enter next step;
(6) judge whether Count of Status equals 2, judge namely whether 3 state parameters in current state cycle are more complete.If equal 2, show that 3 state parameters in current state cycle are more complete, turn step (7); If be not equal to 2, show that 3 state parameters in current state cycle are not yet more complete, turn step (8);
(7) abnormal period counting is clear 0, then enters next step;
(8) Count of Status adds 1, then enters next step;
(9) judge whether Count of Status equals 3, if equal 3 turn step (10), if be not equal to 3 turn step (2);
(10) Count of Status is clear 0, then turn step (2).Count of Status changes according to the order of " 0 → 1 → 2 ", if be added to 3 restart counting after needs clear 0.
(11) judge whether Count of Status equals 0, if equal 0 turn step (12), if be not equal to 0 turn step (8);
(12) will wait for that new state cycle sign changes to vacation, carry out and show that to this step the new state cycle of spread spectrum answering machine arrives, and the 1st collection period (corresponding states is counted as 0) in new state cycle do not need comparison current state and expectation state, only need to table look-up according to current state (seeing Table 1) obtain the expectation state of next collection period and record this expectation state, for next collection period relatively, then turn step (8);
(13) the abnormal period counting adds 1, and it is true to wait for that new state cycle sign changes to, and then turns step (14).Carry out this step, show current state cycle abnormal, the abnormal period counting adds 1, and remaining state parameter of current state cycle no longer needs comparison simultaneously, thereby it is true to wait for that new state cycle sign is set to, and waits for that the new cycle reopens the beginning after arriving and judge;
(14) judge that whether the abnormal period counting is more than or equal to 3, if satisfy condition turn step (15), if do not satisfy condition turn step (8);
(15) spread spectrum answering machine abnormality mark is changed to very, then turn step (16).So far, spread spectrum answering machine breech lock judgement work is carried out and is finished, and judges spread spectrum answering machine operation irregularity, waits pending clear-latch;
(16) send spread spectrum answering machine cut-offing instruction, behind time-delay certain hour interval (should equal or be slightly larger than the unused time of spread spectrum answering machine, as 5s), resend the spread spectrum answering machine and power up instruction, so far, the work of spread spectrum answering machine clear-latch is carried out and is finished.
The content that is not described in detail in instructions of the present invention belongs to those skilled in the art's known technology.
Claims (1)
1. a spacecraft spread spectrum answering machine at the release method of rail breech lock fault, is characterized in that step is as follows:
(1) set up spread spectrum answering machine state relation table, be used for the current state of fixed storage spread spectrum answering machine and the corresponding relation of next expectation state; Wherein the spread spectrum answering machine has 3 states at each period of state T, use respectively parameter 1, parameter 2 and parameter 3 expressions, the expectation state of parameter 1 state is parameter 2 states, the expectation state of parameter 2 states is parameter 3 states, and the expectation state of parameter 3 states is parameter 1 state;
(2) CPU (central processing unit) of satellite data handling subsystem is obtained the state of spread spectrum answering machine at each collection period Tc, by searching spread spectrum answering machine state relation table, the state of the spread spectrum answering machine that collects of judgement whether with spread spectrum answering machine state relation table in record whether consistent with expectation state corresponding to this collection period, if unanimously judge that the spread spectrum answering machine is working properly, return and re-execute this step; If inconsistent, judge spread spectrum answering machine operation irregularity, no longer the residual state of this period of state is differentiated and re-executed this step after the new period of state of the next one arrives, wherein T=3Tc;
(3) in the process of execution in step (2), record the number N of the abnormal period of state of spread spectrum answering machine continuous working, if after N surpasses preset value, judgement spread spectrum answering machine generation breech lock fault; Send spread spectrum answering machine cut-offing instruction this moment, after guaranteeing the shutdown of spread spectrum answering machine at time-delay certain hour interval, resends the spread spectrum answering machine and power up instruction, a clear-latch end-of-job of spread spectrum answering machine.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105320014A (en) * | 2014-05-28 | 2016-02-10 | 中国人民解放军理工大学 | FPGA space application radiation hardening method based on inspection self-healing |
| CN109831242A (en) * | 2019-01-23 | 2019-05-31 | 上海卫星工程研究所 | The restoration methods and system of the spaceborne in-orbit latch of answering machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788817A (en) * | 2010-01-29 | 2010-07-28 | 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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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788817A (en) * | 2010-01-29 | 2010-07-28 | 航天东方红卫星有限公司 | Fault recognition and processing method based on satellite-bone bus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105320014A (en) * | 2014-05-28 | 2016-02-10 | 中国人民解放军理工大学 | FPGA space application radiation hardening method based on inspection self-healing |
| CN105320014B (en) * | 2014-05-28 | 2017-11-14 | 中国人民解放军理工大学 | FPGA space application radiation hardening methods based on inspection self-healing |
| CN109831242A (en) * | 2019-01-23 | 2019-05-31 | 上海卫星工程研究所 | The restoration methods and system of the spaceborne in-orbit latch of answering machine |
| CN109831242B (en) * | 2019-01-23 | 2021-05-11 | 上海卫星工程研究所 | Recovery method and system for on-orbit latch of satellite-borne transponder |
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