CN107203399A - A kind of in-orbit program re-injection system of satellite - Google Patents
A kind of in-orbit program re-injection system of satellite Download PDFInfo
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- CN107203399A CN107203399A CN201710403506.0A CN201710403506A CN107203399A CN 107203399 A CN107203399 A CN 107203399A CN 201710403506 A CN201710403506 A CN 201710403506A CN 107203399 A CN107203399 A CN 107203399A
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- reset
- circuit
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- injection procedure
- master controller
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1415—Saving, restoring, recovering or retrying at system level
- G06F11/1438—Restarting or rejuvenating
Abstract
The invention discloses a kind of in-orbit program re-injection system of satellite, including switching signal generative circuit, after the changeover program instruction for receiving ground control centre transmission, the corresponding guiding id signal of output is to master controller；Master controller, reset operation is carried out for receiving control system after reset signal；After reset, the bootstrap read in original program memory is run, and bootstrap is according to operation in the re-injection procedure in the guiding id signal guiding re-injection procedure memory received or original program to the internal memory in original program memory；Reset circuit, after the reset routine instruction for receiving ground control centre transmission, generates reset signal and sends to master controller.The present invention can be avoided due to multiple functions are integrated together into the caused influence to system reset function and program handoff functionality as far as possible, and reliability is high.
Description
Technical field
The present invention relates to satellite program maintenance technology field, more particularly to a kind of in-orbit program re-injection system of satellite.
Background technology
The space payload of satellite refers to directly performing the instrument and equipment of satellite task, and (including master controller is used for
The memory of storage program and the internal memory of configuration processor etc.), due in the embedded software work of space payload
Pivot, if due to the change of in-orbit application environment so that if embedded software partial function fails, space payload can be influenceed
Normal work, now need using in-orbit program re-injection method update or change embedded software program, recover space
The normal work of payload.
The method of in-orbit program re-injection is that re-injection procedure is sent into satellite from ground control centre by world link to put down
Platform, satellite platform is sent to space payload by inside satellite data/address bus again, and space payload receives re-injection procedure,
By being stored after verification, re-injection procedure can cover original program, also can individually store, and then ground control centre sends switching journey
Sequence is instructed, and space payload is switched to guiding re-injection procedure, is then carried out system reset operation, and weight is directly run after reset
Note program.
At present, in space payload, receive changeover program instruction after be converted into corresponding switching signal send to
The part that master controller enters line program switching is FPGA, while FPGA, which also undertakes, receives the reset instruction that ground control centre is sent
Reset signal is generated afterwards and is sent to the function of master controller, and some other functions.Because the function that FPGA undertakes is more,
Program is complicated, is likely to occur and influences each other between distinct program, i.e., may shadow after One function part is broken down in FPGA
The function of program switching part or reset portion is rung, causes handoff failure or resets failure so that space payload can not draw
Re-injection procedure operation is led, i.e., is used as the functional unit of reset portion and program switching part using the FPGA for having a variety of functions concurrently
There is greater risk, reliability is low.
Therefore, how to provide a kind of in-orbit program re-injection system of the high satellite of reliability is that those skilled in the art need at present
The problem of solving.
The content of the invention
It is an object of the invention to provide a kind of in-orbit program re-injection system of satellite, it can avoid as far as possible due to by multiple work(
Influence caused by being integrated together to system reset function and program handoff functionality, reliability is high.
In order to solve the above technical problems, the invention provides a kind of in-orbit program re-injection system of satellite, including master controller
And be connected respectively with the master controller switching signal generative circuit, internal memory, original program memory, re-injection procedure storage
Device and reset circuit；
The original program memory internal memory contains original program and bootstrap；
The switching signal generative circuit, after the changeover program instruction for receiving ground control centre transmission, exports phase
The guiding id signal answered is to the master controller；
The master controller, reset operation is carried out for receiving control system after reset signal；After reset, the original is read
Bootstrap in beginning program storage is run, and the bootstrap is described according to the guiding id signal guiding received
Run in original program to the internal memory in re-injection procedure or the original program memory in re-injection procedure memory；
The reset circuit, for receiving after the reset routine instruction that the ground control centre is sent, is generated described multiple
Position signal is simultaneously sent to the master controller.
Preferably, in addition to：
The fault tolerable circuit of filter operation is carried out for being instructed to reset routine, the input of the fault tolerable circuit is used to receive
The reset routine instruction that the ground control centre is sent, output end connects the input of the reset circuit.
Preferably, the fault tolerable circuit is specially RC circuits.
Preferably, in addition to：
It is connected to the shaping circuit between the RESET input of the output end of the reset circuit and the master controller, institute
Stating shaping circuit is used to carry out shaping operation to the reset signal.
Preferably, the shaping circuit is specially Schmidt trigger.
Preferably, in addition to：
Watchdog circuit for producing redundant reset signal；
For the logic circuit for carrying out or operating；
The output end of the watchdog circuit is connected the two of the logic circuit respectively with the output end of the shaping circuit
Individual input, the output end of the logic circuit connects the RESET input of the master controller.
Preferably, the switching signal generative circuit is specially magnetic latching relay.
Preferably, the reset circuit is electromagnetic relay.
Preferably, the internal memory is specifically included：
Module is run, for running the re-injection procedure or the original program；
Re-injection module, the re-injection procedure packet for receiving the use CCSDS codings that the ground control centre is sent
Verify and store successively, after tail bag is received, the program in each packet of integrating obtains the re-injection procedure and gone forward side by side
Row verification, after verification passes through, the re-injection procedure is write in the re-injection procedure memory.
The invention provides a kind of in-orbit program re-injection system of satellite, including master controller and respectively with the main control
Switching signal generative circuit, internal memory, original program memory, re-injection procedure memory and the reset circuit of device connection；Switching letter
Number generative circuit is received after the changeover program instruction that ground control centre is sent, the corresponding electricity guiding id signal of output to master control
Device processed, master controller after the reset, reads bootstrap and run, in bootstrap running, and meeting basis is received
Re-injection procedure or original program in the guiding mark that id signal is carried, selective guiding re-injection procedure memory is guided to deposit
Run in original program to internal memory in reservoir.It can be seen that, system of the invention divides reset circuit and switching signal generative circuit
Leave and, reset signal is only used for the generation of reset signal from switching signal by different circuit evolvings, and reset circuit, and cuts
The generation that signal generating circuit is only used for switching signal is changed, is avoided as far as possible between switching signal generating portion and reset portion
Influence each other, decrease causes by other work(due to two above funtion part and other functions being integrated together
The influence of energy causes the situation of failure to occur, and improves the reliability of the in-orbit program refill process of satellite.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to institute in prior art and embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
A kind of structural representation for the in-orbit program re-injection system of satellite that Fig. 1 provides for the present invention；
The structural representation for the in-orbit program re-injection system of another satellite that Fig. 2 provides for the present invention；
Fig. 3 encodes re-injection procedure data packet format schematic diagram for a kind of CCSDS that the present invention is provided.
Embodiment
The core of the present invention is to provide a kind of in-orbit program re-injection system of satellite, can avoid as far as possible due to by multiple work(
Influence caused by being integrated together to system reset function and program handoff functionality, reliability is high.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
It is shown in Figure 1 the invention provides a kind of in-orbit program re-injection system of satellite, Fig. 1 for the present invention provide one
Plant the structural representation of the in-orbit program re-injection system of satellite；The system is connected including master controller 1 and respectively with master controller 1
Switching signal generative circuit 5, internal memory 4, original program memory 3, re-injection procedure memory 2 and reset circuit 6；
Original program memory internal memory contains original program and bootstrap；
Wherein, separate between original program memory 3, re-injection procedure memory 2, two storage implement bodies can be used
EEPROM (model can be 3DEE5M40VS5257), it is empty with different addresses using the different chip selection signal of master controller 1
Between.Certainly, the present invention does not limit the concrete model of two memories.
Switching signal generative circuit 5, after the changeover program instruction for receiving ground control centre transmission, exports phase
The guiding id signal answered is to the master controller 1；
Here switching signal generative circuit 5 can use magnetic latching relay 2JB1-910, and the guiding id signal is
Low and high level signal, different guiding marks represent that such as high level represents to guide re-injection procedure, low electricity using different level
It is flat to represent guiding original program, certainly, specific high level guide which kind of program can sets itself, the present invention is not construed as limiting, in addition,
Switching signal generative circuit 5 also can realize the circuit of above-mentioned functions using other.
Master controller 1, for carrying out reset operation for receiving control system after reset signal；After reset, read described
Bootstrap in original program memory is run, and the bootstrap is according to the guiding id signal guiding institute received
State and transported in original program to the internal memory 4 in the re-injection procedure or the original program memory 3 in re-injection procedure memory 2
OK；
Wherein, master controller 1 can use BM3803 processors, wherein, the PI07 pins of BM3803 processors are as cutting
The input for changing signal (the first level signal and second electrical level signal) is connected with the output end of switching signal generative circuit 5.Wherein,
The internal memory 4 of master controller 1 contains bootstrap, bootstrap automatic running after the power-up, and its function is the different application journeys of guiding
Sequence is loaded onto internal memory 4 and run, after master controller 1 is initialized, and reads the data of the switching signal of PI07 pins input, when switching letter
Number be low level signal when, read data be 0, now, bootstrap guide re-injection procedure into internal memory 4, when switching signal is
During high level signal, it is 1 to read data, now, and bootstrap guides original program into internal memory 4；It is of course also possible to high level
Re-injection procedure is guided during signal, on the contrary guiding original program, specifically it is not especially limited using which kind of mode present invention.
Reset circuit 6, after the reset routine instruction for receiving ground control centre transmission, generates reset signal and sends
To master controller 1.
Wherein, reset circuit 6 here can also use magnetic latching relay 2JB1-910, for receiving low level
Resetted during signal (80ms ± 10ms), certainly, may be alternatively provided as high level signal triggering reset, in addition reset circuit 6
Other kinds of circuit can be used, the present invention is not especially limited to this.
In addition, internal memory 4 here is SRAM, it is specifically as follows model 3DSR20M40VS6507, the present invention is not limited certainly
The model of internal memory 4.
It should be noted that bootstrap is located at the 0 of PROM, the program is run first after upper electricity or reset every time, it
Determine that guiding original program or re-injection procedure are run to internal memory according to the guiding of reception mark.Because re-injection procedure may be sent out
The situation of raw multi-fold, therefore in order to avoid bootstrap is capped, bootstrap is stored in original program memory.
The invention provides a kind of in-orbit program re-injection system of satellite, including master controller and respectively with the main control
Switching signal generative circuit, internal memory, original program memory, re-injection procedure memory and the reset circuit of device connection；Switching letter
Number generative circuit is received after the changeover program instruction that ground control centre is sent, the corresponding electricity guiding id signal of output to master control
Device processed, master controller after the reset, reads bootstrap and run, in bootstrap running, and meeting basis is received
Re-injection procedure or original program in the guiding mark that id signal is carried, selective guiding re-injection procedure memory is guided to deposit
Run in original program to internal memory in reservoir.It can be seen that, system of the invention divides reset circuit and switching signal generative circuit
Leave and, reset signal is only used for the generation of reset signal from switching signal by different circuit evolvings, and reset circuit, and cuts
The generation that signal generating circuit is only used for switching signal is changed, is avoided as far as possible between switching signal generating portion and reset portion
Influence each other, decrease causes by other work(due to two above funtion part and other functions being integrated together
The influence of energy causes the situation of failure to occur, and improves the reliability of the in-orbit program refill process of satellite.
For convenience of understanding, the workflow of said system is described below：
Step s101：Ground control centre is sent re-injection procedure to satellite platform by world link, and satellite platform is again
Sent in the re-injection procedure memory 2 into space payload and verified by inside satellite 1553B buses or CAN
And store；
Step s102：Switching signal generative circuit 5 is received after the re-injection changeover program instruction that ground control centre is sent, raw
Into the first level signal to master controller 1；
Step s103：Reset circuit 6 is received after the reset routine instruction that ground control centre is sent, and generation reset signal is simultaneously
Send to master controller 1；
Here guiding is copy function.
Step s104：After internal memory 4 is initialized, the bootstrap that the operation of master controller 1 is read, bootstrap is according to receiving
The first level signal guiding re-injection procedure memory 2 in re-injection procedure to internal memory 4；
Step s105：Re-injection procedure automatic running in internal memory 4, completes re-injection operation.
It is understood that the present invention can switch the program source in internal memory 4 repeatedly, and multiple re-injection can be realized
Operation.
In a preferred embodiment, internal memory 4 is specifically included：
Module is run, for running re-injection procedure or original program；
Re-injection module, is carried out for receiving the re-injection procedure packet of use CCSDS codings of ground control centre transmission
Verify and store successively, after tail bag is received, integrate the program in each packet and obtain re-injection procedure and verified, school
Test by rear, re-injection procedure is write in re-injection procedure memory 2.
It is understood that during re-injection procedure is sent to space payload and storage in step s101, needing
Re-injection procedure is decomposed into multiple re-injection procedure packets.
Wherein, the size of re-injection procedure packet is often wraps 64 bytes, and CCSDS codings are one kind based on CCSDS standards
Coding, Fig. 3 encodes re-injection procedure data packet format schematic diagram for a kind of CCSDS that the present invention is provided.
Version number：3 binary systems, are fixed as b " 000 "；
Packet type：1 binary system, is fixed as b " 0 ", represents re-injection bag；
Secondary top guide mark：1 binary system, b " 0 " is represented without secondary top guide；B " 1 ", which is represented, secondary top guide；
Application process ID：11 binary systems, identify each rear end equipment；
Sequence flag：Program is noted in 2 binary systems, mark
B " 00 " represents the tundish for program of noting；
B " 01 " represents the starting bag for program of noting；
B " 10 " represents the end packet for program of noting；
B " 11 " represents the independent bag of note program.
Packet sequence is counted：14 binary systems, are currently to wrap the order in full sequence, are started counting up from 0, maximum is
16383(b”11111111111111”)；
Bag data length：16 binary systems, unit is byte, and value is equal to bag data length (comprising secondary top guide and significant figure
According to area) -1；
Valid data area：Hexadecimal data content, data length should be even number, for the upper byte of note program+2 verification and；
CRC check：4 bytes, verification scope is wrapped including whole source, i.e., leading head and bag data area are verified.
It is further known that, re-injection procedure is sent to space payload in step s101 and the process of storage is specific such as
Under：
Step s201：SRAM receives the re-injection procedure packet of transmission simultaneously by inside satellite 1553B buses or CAN
Carry out first to verify, it is qualified to verify, and receives, and read the valid data in re-injection procedure packet then by re-injection procedure number
According to the sequential storage of bag sequence number in re-injection module, verification failure then abandons and returns to error message to satellite platform, notifies to defend
Star platform is retransmitted；
Step s202：Re-injection module, which is detected, to be received after tail bag, integrates the significant figure in each packet received
According to, obtain after complete re-injection procedure and carry out second verifying, verify it is qualified after, the re-injection procedure in SRAM is write into re-injection
In program storage 2；
Step s203：The re-injection procedure of 2 pairs of storages of re-injection procedure memory carries out the 3rd and verified, and after verification is qualified, notifies
Ground control centre re-injection procedure is finished receiving, and can carry out the switching and booting operation operation of follow-up re-injection procedure.
It is understood that the first verification is that the re-injection procedure packet of transmission is verified, it is therefore an objective to judge whole bag
Qualification；Second verification be that the content of re-injection procedure is verified, it is therefore an objective to judge whether valid data reading or
Occurs mistake in integration process；3rd verification is verified to transmitting to the re-injection procedure in re-injection procedure memory 2, mesh
Be to judge whether re-injection procedure mistake occurs during entering re-injection procedure memory 2 from SRAM write.Pass through above-mentioned three schools
Test, the situation of re-injection procedure error of transmission can be avoided to occur substantially, reduce because re-injection is lost caused by re-injection procedure mistake
Situation about losing occurs, and improves the reliability of re-injection operation.
Preferably, the system also includes：
The fault tolerable circuit of filter operation is carried out for being instructed to reset routine, the input of fault tolerable circuit is used to receive ground
The reset routine instruction that control centre sends, output end connects the input of reset circuit 6.
It is understood that the function of fault tolerable circuit here is for filtering the noise in reset routine instruction, preventing
Operation is resetted caused by noise by mistake, the reliability of system is improved.
Preferably, fault tolerable circuit here is specially RC circuits, can filter the low-level noise less than 20ms.
Preferably, the system also includes：
It is connected to the shaping circuit between the RESET input of the output end of reset circuit 6 and master controller 1, shaping circuit
For carrying out shaping operation to reset signal.
Specifically, shaping circuit here is specially Schmidt trigger, its model can be SNJ54AHC14W, when
So, the present invention does not limit the particular type of shaping circuit.
Preferably, the system also includes：
Watchdog circuit for producing redundant reset signal；
For the logic circuit for carrying out or operating；
The output end of watchdog circuit and the output end of shaping circuit connect two inputs of logic circuit, logic respectively
The output end of circuit connects the RESET input of master controller 1.
It is understood that the input of watchdog circuit also receives the reset routine instruction of ground control centre transmission,
So as to control watchdog circuit to generate reset signal, the input signal and the reset signal of the output of reset circuit 6 of watchdog circuit
Seek or connect afterwards the RESET input of master controller 1.The watchdog circuit is redundant circuit, for producing redundant reset signal,
Ensure to reset the successful execution operated, improve the reliability of system.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.For device disclosed in embodiment
For, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is said referring to method part
It is bright.
It should also be noted that, in this manual, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include that
A little key elements, but also other key elements including being not expressly set out, or also include be this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except also there is other identical element in the process including the key element, method, article or equipment.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (9)
1. a kind of in-orbit program re-injection system of satellite, it is characterised in that including master controller and respectively with the master controller
Switching signal generative circuit, internal memory, original program memory, re-injection procedure memory and the reset circuit of connection；
The original program memory internal memory contains original program and bootstrap；
The switching signal generative circuit, after the changeover program instruction for receiving ground control centre transmission, output is corresponding
Id signal is guided to the extremely master controller；
The master controller, reset operation is carried out for receiving control system after reset signal；After reset, the original journey is read
Bootstrap in sequence memory is run, and the bootstrap guides the re-injection according to the guiding id signal received
Run in original program to the internal memory in re-injection procedure or the original program memory in program storage；
The reset circuit, for receiving after the reset routine instruction that the ground control centre is sent, generates described reset and believes
Number and send to the master controller.
2. system according to claim 1, it is characterised in that also include：
The fault tolerable circuit of filter operation is carried out for being instructed to reset routine, the input of the fault tolerable circuit is used to receive described
The reset routine instruction that ground control centre is sent, output end connects the input of the reset circuit.
3. system according to claim 2, it is characterised in that the fault tolerable circuit is specially RC circuits.
4. system according to claim 2, it is characterised in that also include：
The shaping circuit between the RESET input of the output end of the reset circuit and the master controller is connected to, it is described whole
Shape circuit is used to carry out shaping operation to the reset signal.
5. system according to claim 4, it is characterised in that the shaping circuit is specially Schmidt trigger.
6. system according to claim 4, it is characterised in that also include：
Watchdog circuit for producing redundant reset signal；
For the logic circuit for carrying out or operating；
The output end of the watchdog circuit with the output end of the shaping circuit is connected the logic circuit respectively two it is defeated
Enter end, the output end of the logic circuit connects the RESET input of the master controller.
7. the system according to claim any one of 1-6, it is characterised in that the switching signal generative circuit is specially magnetic
Guard relay.
8. system according to claim 1, it is characterised in that the reset circuit is electromagnetic relay.
9. system according to claim 1, it is characterised in that the internal memory is specifically included：
Module is run, for running the re-injection procedure or the original program；
Re-injection module, the re-injection procedure packet for receiving the use CCSDS codings that the ground control centre is sent is carried out
Verify and store successively, after tail bag is received, the program in each packet of integrating obtains the re-injection procedure and carries out school
Test, after verification passes through, the re-injection procedure is write in the re-injection procedure memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710403506.0A CN107203399B (en) | 2017-06-01 | 2017-06-01 | Satellite in-orbit program reinjection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710403506.0A CN107203399B (en) | 2017-06-01 | 2017-06-01 | Satellite in-orbit program reinjection system |
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| CN107203399A true CN107203399A (en) | 2017-09-26 |
| CN107203399B CN107203399B (en) | 2020-08-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112579333A (en) * | 2020-11-30 | 2021-03-30 | 上海航天控制技术研究所 | High-reliability self-repairing on-orbit programmable system and method controlled by solar wing of space station |
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