CN106850046A - A kind of spaceborne remote-control romote-sensing terminal, system and method based on FPGA - Google Patents
A kind of spaceborne remote-control romote-sensing terminal, system and method based on FPGA Download PDFInfo
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- CN106850046A CN106850046A CN201710045139.1A CN201710045139A CN106850046A CN 106850046 A CN106850046 A CN 106850046A CN 201710045139 A CN201710045139 A CN 201710045139A CN 106850046 A CN106850046 A CN 106850046A
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- telecommand
- telemetry
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- data cache
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18502—Airborne stations
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
- G06F12/0802—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
- G06F12/0875—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches with dedicated cache, e.g. instruction or stack
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
- G06F2212/45—Caching of specific data in cache memory
- G06F2212/452—Instruction code
Abstract
The present invention relates to a kind of spaceborne remote-control romote-sensing terminal, system and method based on FPGA.The terminal includes：Interface administration module, data processing module receives data cache module and sends data cache module；The interface administration module is suitable to the telecommand and the first telemetry that receive outside first answering machine and the transmission of ADC collectors respectively, and the data processing module is suitable to parse the telecommand and the telecommand is write into the reception data cache module according to the type of the telecommand；The data processing module is further adapted for reading the second telemetry of the transmission data cache module presence and by externally connected second answering machine of the interface administration module.The present invention can improve the Space Vehicle System stability of system and compatibility when processing telecommand and sending telemetry.
Description
Technical field
The present invention relates to space communication technical field, more particularly to a kind of spaceborne remote-control romote-sensing terminal, one based on FPGA
Plant spaceborne remote control telemetering system and a kind of spaceborne remote-control romote-sensing method based on FPGA based on FPGA.
Background technology
With the high speed development of Space Science and Technology, each power of the world starts to accelerate the exploration to space, grabs space resources,
Space technology has become the important indicator of overall national strength.Since last century end, China in space technology and space industry
Through achieving great achievement.Equally, as Space Vehicle System becomes increasingly complex, the stability and compatibility of system can also decline,
The requirement more and more higher of this remote terminal to spacecraft.
It is to apply benchmark with high-performance and high stability that the information processing system of Aerospace Satellite is main, to realize that satellite is being disliked
The stable operation of Control management system and data handling system under bad deep space environment.When spacecraft is in space environment,
Can be influenceed by from various radiation in space.Satellite in orbit when Star Service computer chip it is easily (single by single particle effect
Particle is locked and single-particle inversion) influence, the upset of memory data can be caused, occur during so as to causing spacecraft in orbit
Failure and exception.The telecommand that wherein ground based terminal sends is mostly important with the telemetry for receiving, and prior art lacks one
Plant the terminal device that can improve Space Vehicle System stability when processing telecommand and sending telemetry.
The telecommand of house keeping computer treatment is respectively derived from On-board software receiver and satellite attitude control with telemetry
Unit, but due to house keeping computer with outside communication interface limitation, telecommand and telemetry high speed real-time,
The importance that direct instruction is run to satellite system, house keeping computer can not directly receive treatment telecommand and telemetry,
It is compatible with house keeping computer realization that prior art also lacks a kind of intermediate data processing unit, and take into account the stability of a system with it is flexible
Property.
The content of the invention
The technical problem that technical solution of the present invention is solved is how to improve Space Vehicle System in treatment telecommand and transmission
The stability of system and compatibility during telemetry.
In order to solve the above-mentioned technical problem, technical solution of the present invention provides a kind of spaceborne remote-control romote-sensing end based on FPGA
End, including：Interface administration module, data processing module receives data cache module and sends data cache module；The interface
Management module is suitable to the telecommand and the first telemetry that receive outside first answering machine and the transmission of ADC collectors respectively, and
First telemetry is write into the reception data cache module；The data processing module is suitable to parse the remote control and refers to
Make and the telecommand is write by the reception data cache module according to the type of the telecommand；When the reception number
There is the telecommand according to cache module, then outside house keeping computer receives the first actuating signal and in the described first effect letter
Number for the first useful signal when read it is described reception data cache module exist telecommand；The transmission data cache module
It is suitable to store the second telemetry of the outside house keeping computer transmission, the data processing module is further adapted for reading the hair
Send the second telemetry of data cache module presence and by externally connected second answering machine of the interface administration module.
Optionally, the interface administration module includes：First input end, the second input, the first output end and second are defeated
Go out end；The first input end is suitable to receive the serial telecommand of the answering machine transmission of the outside first, first output
End is suitable to transmit parallel telecommand to the data processing module；Second input is suitable to receive the ADC collections
First telemetry of device transmission, second output end is suitable to the first telemetry after sort by type and transmission to institute
State reception data cache module.
Optionally, the reception data cache module includes：First FIFO memory modules and RAM memory modules；Described
One FIFO memory modules are suitable to store the telecommand, and the RAM memory modules are suitable to storage first telemetry, when
The first FIFO memory module non-NULLs, it is first useful signal that first actuating signal presses first frequency triggering.
Optionally, the type of the telecommand includes direct instruction and indirect instruction, and the telecommand is at least by wrapping
The transmission frame for including the leading head of frame and frame data domain is constituted, wherein the direct instruction is at least by the first transmission frame and the second transmission frame
Constitute, the frame data domain of the first transmission frame and the second transmission frame is made up of three direct instruction codes, and the indirect instruction is only
Individually to transmit frame；The data processing module includes：Kind detecting unit, state extraction unit and sending module；The class
Type detection unit is suitable to receive the telecommand of the interface administration module transmission and detect the frame length of the telecommand to sentence
The type of the telecommand of breaking；The state extraction unit is suitable to the first transmission frame or the second transmission frame in a direct instruction
Frame data domain meet its direct instruction code all it is identical when perform the direct instruction；The sending module is suitable to will be described direct
Instruction and indirect instruction are sent to the reception data cache module.
Optionally, the data processing module also includes：Telemetry transmitting element；The transmission data cache module bag
Include：2nd FIFO memory modules；The 2nd FIFO memory modules are suitable to the second telemetry described in storage, when described second
There is second telemetry in FIFO memory modules, then telemetry transmitting element produces the second actuating signal and described the
Two actuating signals read the second telemetry that the 2nd FIFO memory modules are present, the remote measurement when being the second useful signal
The second telemetry that data transmission unit is further adapted for reading is forwarded to the interface administration module.
In order to solve the above-mentioned technical problem, technical solution of the present invention additionally provides a kind of spaceborne remote-control romote-sensing based on FPGA
System, including：First answering machine, ADC collectors, the second answering machine, spaceborne remote-control romote-sensing terminal as described above and Star Service meter
Calculation machine.
Optionally, the house keeping computer is connected by EMIF buses with the spaceborne remote-control romote-sensing terminal.
Optionally, the EMIF buses are implemented based on following agreement：
Address choice EMIF action types according to EMIF buses, wherein：
If the address of EMIF buses is the first address, the house keeping computer is suitable to receive the reception data buffer storage mould
There is the quantity of telecommand in block；
If the address of EMIF buses is the second address, the house keeping computer is suitable to read the transmission data buffer storage mould
Full state in block；
If the address of EMIF buses is three address, the house keeping computer is suitable to read the reception data buffer storage mould
Telecommand in block；
If the address of EMIF buses is four address, the house keeping computer is suitable to read the reception data buffer storage mould
The first telemetry in block；
If the address of EMIF buses is four address, the house keeping computer is suitable to the transmission data cache module
Middle write-in second telemetry.
Optionally, the ADC collectors are suitable to be acquired the analog telemetering data of each peripheral hardware unit of satellite produce
First telemetry.
In order to solve the above-mentioned technical problem, technical solution of the present invention additionally provides a kind of spaceborne remote-control romote-sensing based on FPGA
Method, based on spaceborne remote-control romote-sensing terminal as described above, including：
Receive the telecommand and the first telemetry of outside first answering machine and the transmission of ADC collectors, and by described the
One telemetry writes the reception data cache module；
Parse the telecommand and the telecommand is write by the reception number according to the type of the telecommand
According to cache module, the type of the telecommand includes direct instruction and indirect instruction；
When the reception data cache module has the telecommand, then outside house keeping computer receives the first effect letter
Number and read when first actuating signal is the first useful signal it is described reception data cache module exist telecommand；
Second telemetry of the storage outside house keeping computer transmission simultaneously sends.
The beneficial effect of technical solution of the present invention at least includes：
Technical solution of the present invention realizes spaceborne remote-control romote-sensing terminal using based on the hardware structure of FPGA, because its it is abundant can
The pin resource of programming, improves the autgmentability and compatibility of technical solution of the present invention external interface；Due to hard inside FPGA
Part circuit structure, makes technical solution of the present invention in complicated space environment, can be efficiently treated through, and transmission remote control in real time refers to
Order, moreover it is possible to take into account the stability of satellite system.
Due to satellite in orbit when Star Service computer chip easily by single particle effect, (locking single particle and single-particle are turned over
Turn) influence, the upset of memory data can be caused, broken down during so as to causing spacecraft in orbit and abnormal, wherein
The telecommand that face terminal sends is mostly important with the telemetry for receiving.Technical solution of the present invention is spaceborne using FPGA architecture
Remote-control romote-sensing terminal, substantially increases stability of the Space Vehicle System when processing telecommand and sending telemetry；In addition,
By FPGA integrated terminals as house keeping computer intermediate data processing system, be the telecommand and remote measurement number of house keeping computer
According to the halfpace as data communication, flexibility and high efficiency, the stability of system and compatibility of design greatly improved.
In technical solution of the present invention, data processing module can be remotely controlled data parsing, and by telecommand frame master
The detection of top guide may determine that instruction type and frame length：Wherein, the frame length of indirect instruction is indefinite, and indirect instruction transmission frame only sends
Once, frame data tail end has the CRC check position of 4 bytes；Direct instruction frame length is fixed as 14 bytes, compared to indirect instruction, directly
The switch of each peripheral hardware unit on instruction control star is connect, the normal operation of whole satellite system is directly affected, so direct instruction bag
The two frame same instructions transmission frame data for continuously transmitting have been included, and the frame data domain part of every transmission frame is straight by three identicals
Instruction composition is connect, the above-mentioned communication data of technical solution of the present invention sets and can ensure that the accurate of direct instruction transmission, and
Direct instruction is directly performed after being confirmed by FPGA parsings, it is ensured that the normal work of each peripheral hardware unit of satellite, enhancing satellite system
Stability.
In technical solution of the present invention, the data that telemetry receiver module will also be received according to telemetry type according to
In the reception RAM of permanent order write-in order caching module, house keeping computer voluntarily reads telemetry at any time；Remote measurement
Data are updated in reception RAM according to the frequency for making such as 1K hertz of frequency by oneself, to ensure the real-time of telemetry.
Brief description of the drawings
The detailed description made to non-limiting example with reference to the following drawings by reading, other features of the invention,
Objects and advantages will become more apparent upon：
A kind of structural representation of spaceborne remote-control romote-sensing terminal based on FPGA that Fig. 1 is provided for technical solution of the present invention；
A kind of schematic diagram of direct instruction transformat that Fig. 2 is provided for technical solution of the present invention；
A kind of schematic diagram of indirect instruction transformat that Fig. 3 is provided for technical solution of the present invention；
A kind of schematic flow sheet of spaceborne remote-control romote-sensing method based on FPGA that Fig. 4 is provided for technical solution of the present invention；
A kind of structural representation of spaceborne remote control telemetering system based on FPGA that Fig. 5 is provided for technical solution of the present invention；
A kind of structural representation of data buffer storage mechanism that Fig. 6 is provided for technical solution of the present invention；
A kind of remote-control data handling process schematic diagram that Fig. 7 is provided for technical solution of the present invention；
A kind of Telemetering Data Processing schematic flow sheet that Fig. 8 is provided for technical solution of the present invention.
Specific embodiment
In order to preferably make technical scheme clearly show, the present invention is made into one below in conjunction with the accompanying drawings
Step explanation.
According to the one side of technical solution of the present invention, a kind of spaceborne remote-control romote-sensing based on FPGA is present embodiments provided
Terminal, as shown in figure 1, including：Interface administration module, data processing module receives data cache module and sends data buffer storage
Module.
The interface administration module be suitable to receive respectively outside first answering machine and the transmission of ADC collectors telecommand and
First telemetry, and first telemetry is write into the reception data cache module.
Specifically, the interface administration module includes：First input end, the second input, the first output end and second are defeated
Go out end；The first input end is suitable to receive the serial telecommand of the answering machine transmission of the outside first, first output
End is suitable to transmit parallel telecommand to the data processing module；Second input is suitable to receive the ADC collections
First telemetry of device transmission, second output end is suitable to the first telemetry after sort by type and transmission to institute
State reception data cache module.Interface administration module has the data processing mechanism of transformation from serial to parallel, and the first remote measurement number
According to being data signal.
With continued reference to Fig. 1, the data processing module is suitable to parse the telecommand and according to the telecommand
The telecommand is write the reception data cache module by type；When the reception data cache module has the remote control
Instruction, then outside house keeping computer the first actuating signal of reception and the reading when first actuating signal is the first useful signal
It is described to receive the telecommand that data cache module is present.On the other hand, the first actuating signal of outside house keeping computer
Can be that it is obtained to receiving the detection of data cache module, outside house keeping computer has benefited from constantly to data cache module
Detection, and produce and receive first actuating signal.Specifically, the reception data cache module includes：First FIFO is deposited
Storage module and RAM memory modules；The first FIFO memory modules are suitable to store the telecommand, the RAM memory modules
It is suitable to storage first telemetry, when the FIFO memory module non-NULLs, first actuating signal is by the first frequency
Rate triggering is first useful signal.
That is, the detection object of outside house keeping computer is a FIFO memory modules, and mould is stored for RAM
Block, it then sets according to common reading frequency and is automatically directly read.
More specifically, specifically, the type of the telecommand includes direct instruction and indirect instruction, the remote control refers to
Order is at least made up of the transmission frame including the leading head of frame and frame data domain, wherein the direct instruction at least by the first transmission frame and
Second transmits frame is constituted, and the frame data domain of the first transmission frame and the second transmission frame is made up of three direct instructions codes, described indirect
Instruction is only individually to transmit frame.
Fig. 2 and Fig. 3 sets forth the legend that a kind of type of telecommand is direct instruction and indirect instruction, wherein,
The direct instruction of Fig. 2 includes：Directly transmission frame 1 and directly transmission frame 2, the two is two continuous transmission frames, its transmission frame bag
Frame leading head and frame data domain are included, wherein frame data domain is made up of three identical direct instruction codes.And the indirect instruction of Fig. 3
Head and frame data domain are dominated including frame, wherein frame data domain includes indirect instruction code, and indirect instruction also includes：CRC check.
For the data processing module sets according to function, be may include in first example：Kind detecting unit, state
Extraction unit and sending module；The kind detecting unit is suitable to receive the telecommand of the interface administration module transmission and examine
The frame length of the telecommand is surveyed to judge the type of the telecommand；The state extraction unit is suitable in a direct instruction
First transmission frame or second transmission frame frame data domain meet its direct instruction code all it is identical when perform the direct instruction；Institute
Sending module is stated to be suitable to send the direct instruction and indirect instruction to the reception data cache module.
In other instances, it can be arbitrary that data processing module is divided, and not limited by the structure of above-mentioned modular unit
It is fixed, the function of above-mentioned functions module can part it is integrated, do not limited to by above-mentioned technical examples herein.Further, since of the invention
Technical scheme sets two transmission frames and constitutes a data transfer mode for direct instruction, to improve direct instruction transfer check
The degree of accuracy and high efficiency, and ensure that data transmission stability, it should be noted however that technical solution of the present invention is not
Limited by composition telecommand transmission frame number, that is to say, that multiple transmission frame constitutes a telecommand or transmission frame
In have multiple instruction code verification be all to fall into the range of the verification means of technical solution of the present invention.
With continued reference to Fig. 1, the transmission data cache module is suitable to store the second of the outside house keeping computer transmission
Telemetry, the data processing module is further adapted for reading the second telemetry of the transmission data cache module presence and leading to
Cross externally connected second answering machine of the interface administration module.
Specifically, the data processing module also includes：Telemetry transmitting element；The transmission data cache module bag
Include：2nd FIFO memory modules；The 2nd FIFO memory modules are suitable to the second telemetry described in storage, when described second
There is second telemetry in FIFO memory modules, then telemetry transmitting element produces the second actuating signal and described the
Two actuating signals read the second telemetry that the 2nd FIFO memory modules are present, the remote measurement when being the second useful signal
The second telemetry that data transmission unit is further adapted for reading is forwarded to the interface administration module.
Based on the spaceborne remote-control romote-sensing terminal based on FPGA described in technical solution of the present invention, the present embodiment additionally provides one
The spaceborne remote-control romote-sensing method based on FPGA is planted, based on the spaceborne remote-control romote-sensing terminal described in Fig. 1, as shown in figure 4, including step
Suddenly：
Step S100, receives the telecommand and the first telemetry of outside first answering machine and the transmission of ADC collectors, and
First telemetry is write into the reception data cache module；
Step S101, parses the telecommand and the telecommand is write into institute according to the type of the telecommand
Reception data cache module is stated, the type of the telecommand includes direct instruction and indirect instruction；
Step S102, when the reception data cache module has the telecommand, then outside house keeping computer is received
First actuating signal simultaneously reads the reception data cache module presence when first actuating signal is the first useful signal
Telecommand；
Step S103, stores the second telemetry of the outside house keeping computer transmission and sends.
Other particular contents of the above method refer to the other guide of the present embodiment, and here is omitted.
According to the other side of technical solution of the present invention, the present embodiment additionally provides a kind of spaceborne remote control based on FPGA
Telemetry system, as shown in figure 5, including：Answering machine 1, ADC collections, answering machine 2, spaceborne remote-control romote-sensing terminal and house keeping computer；
The spaceborne remote-control romote-sensing terminal includes：Interface administration module, data processing module receives data cache module and sends data
Cache module；Described data processing module includes：Remote-control data parsing module, telemetry receiver module, telemetry data packet
Sending module (note in the present embodiment, the functional structure of data processing module is different from above-described embodiment, it should be pointed out that, for
For functional module, its function is divided and can be arbitrarily integrated in a module, therefore the present embodiment is not by relevant Module Division
Limit).
Specifically, the output end of described answering machine 1 is connected with interface administration module input；Described ADC collections are defeated
Go out end to be connected with interface administration module input；The described input of answering machine 2 is connected with interface administration module output end；It is described
The output end of interface administration module be connected with remote-control data parsing module input；Described interface administration module output end with
Telemetry receiver module input is connected；Described interface administration module input and telemetry data packet sending module output end
Connection；Described remote-control data parsing module output end is connected with data cache module input is received；Described telemetry
Receiver module output end is connected with data buffer storage input is received；Described telemetry data packet sending module input and transmission number
Connected according to cache module output end；Described reception data cache module output end is connected with house keeping computer input；It is described
Transmission data cache module be connected with house keeping computer output end.
Telecommand handling process is：Answering machine 1 sends serial telecommand to interface administration module, interface administration module
Receive and be converted into parallel telecommand to send to remote-control data parsing module, remote-control data parsing module carries out telecommand
Parsing, judges the correctness of telecommand and does respective handling according to telecommand type, then writes telecommand and receives
Data cache module, house keeping computer reads the telecommand for receiving data cache module by EMIF buses.
Telemetering Data Processing flow is：ADC gathers telemetry and sends to interface administration module, and interface administration module is pressed
Telemetry is sent to telemetry receiver module according to telemetry type, telemetry receiver module by telemetry according to
The write-in of telemetry type receives data cache module, and house keeping computer reads the remote measurement for receiving data module by EMIF buses
Data；House keeping computer is write by EMIF buses after telemetry packing is processed and sends data buffer storage, telemetry data packet hair
Send module to read the telemetry data packet sent in data buffer storage, and telemetry data packet is sent to interface administration module, mouthpiece
Reason module sends to answering machine 2 telemetry data packet.
When telecommand type is direct instruction, telecommand transmits data according to direct instruction transformat；If distant
Control data resolution module is properly received the first frame direct instruction, then perform direct instruction, abandons the second frame direct instruction；If remote control
Data resolution module garbled-reception the first frame direct instruction, program is received into the second frame is received, and rejudges the correct of instruction
Property and selection instruction perform operation；When telecommand is indirect instruction type, does not do instruction and perform operation.
With reference to Fig. 6, receive data buffer storage and be made up of FIFO and RAM, telecommand, RAM storage remote measurement numbers are stored in FIFO
According to；When FIFO is non-NULL, the terminal signaling (i.e. above-mentioned first actuating signal) in house keeping computer, terminal letter will be acted
Number can be the square-wave signal (setting of useful signal can arbitrarily without being limited by example herein herein) that the cycle is 10 milliseconds,
House keeping computer by after EMIF bus protocols detect terminal signaling read FIFO in telecommand, when FIFO be space-time not
Terminal signaling is produced again；Telemetry storage mode is the arrangement of the telemetry of permanent order in RAM, and telemetry receives mould
By the telemetry in real-time update RAM, house keeping computer voluntarily reads current telemetry data to block at any time.
With continued reference to Fig. 6, send data cache module and be made up of FIFO, telemetry data packet is stored in FIFO；When FIFO is
During non-NULL, it is allowed to which (telemetry data packet sending module belongs to the self-defined mould in data processing module to telemetry data packet sending module
Block structure) read FIFO in telemetry data packet and send to interface administration module to launch to answering machine 2, when FIFO be space-time taboo
Only its reading.
More specifically, from the point of view of the realization of telecommand part-structure, with reference to Fig. 7, and the data of Fig. 2 and Fig. 3 are combined
Structure, the system of technical solution of the present invention includes the correspondence of following remote-control data：
(1) the enable signal of the interface administration module that interface administration module detection is connected with answering machine 1, when it is drawn high and holds
Continue for it is high when, start to receive serial telecommand.
(2) interface administration module recognizes the frame head of serial telecommand, carries out data syn-chronization, such as set telecommand
Frame head length is 2 bytes, and data are 16 ' hE14D, and the serioparallel exchange of data, parallel remote-control data are started after the completion of data syn-chronization
Length is 1 byte, then sends to remote-control data parsing module parallel telecommand.
(3) remote-control data parsing module starts to solve telecommand transmission frame data according to telecommand transformat
Analysis.
(4) remote-control data parsing module may determine that instruction type and frame length by the detection to the leading head of frame：Refer to indirectly
The frame length of order is indefinite, and indirect instruction transmission frame only sends once, and frame data tail end has the CRC check position of 4 bytes；Direct instruction frame
Length is fixed as 14 bytes, and compared to indirect instruction, the switch of each peripheral hardware unit, directly affects and entirely defend on direct instruction control star
The normal operation of star system, so direct instruction continuously transmits 2 frame same instructions transmission frame data, and every frame number of transmission frame
It is made up of 3 identical direct instructions according to domain part, it is ensured that it is accurate that direct instruction is transmitted, and direct instruction is by FPGA
Directly performed after parsing, it is ensured that the normal work of each peripheral hardware unit of satellite, strengthen the stability of satellite system.
(5) parsing of the remote-control data parsing module to telecommand transmission frame is completed by state machine, first by inspection
Survey the leading head of frame and judge telecommand type；If the leading header mistake of frame will abandon present instruction frame data, find ground again
Location synchronization character, telecommand data is parsed again；If the leading header of frame receives correct, remote-control data parsing module judgment frame master
Instruction type and entrance director data extraction state in top guide information.
(6) when instruction type is indirect instruction, remote-control data parsing module writes indirect instruction transmission frame according to frame length
Enter and receive data cache module, do not perform indirect instruction；When instruction type be direct instruction when, data processing module also according to
Direct instruction transmission frame write-in is received data cache module by frame length, while by the way of triplication redundancy, judging direct instruction
Whether 3 direct instructions of code part meet at least two identical conditions, if it is satisfied, then the direct instruction is performed, and
And no longer the second frame of reception processing direct instruction transmits frame data, if be unsatisfactory for, shows that the first frame direct instruction sends out
Mistake, remote-control data parsing module will carry out the reception and parsing that the second frame direct instruction transmits frame, the transmission of the second frame direct instruction
The resolving of frame is identical with the first frame, only meets condition and just performs this instruction, otherwise abandons this direct instruction.
(7) execution of direct instruction is completed by the corresponding triode switch of control instruction, in idle condition, three
Pole pipe is output as high level, when direct instruction is performed, 160ms will be dragged down, to ensure opening or closing for each peripheral hardware unit.
(8) sent to after receiving data cache module in direct instruction and indirect instruction frame data, data are stored into receiving
FIFO, reception data cache module acts the interruption in house keeping computer according to the dummy status for receiving FIFO, works as reception
The periodic interruptions that the cycle is 10 milliseconds are produced when FIFO is non-NULL, is space-time when FIFO is received, interrupt signal often sets to 0.
(9) house keeping computer is detected by after the read-write operation of EMIF buses when receiving data cache module, according to
FPGA arranges with house keeping computer EMIF command protocols, the different choice EMIF action types of the address according to EMIF buses：
If the address of EMIF buses is the first address, the house keeping computer is suitable to receive the reception data buffer storage mould
There is the quantity of telecommand in block；
If the address of EMIF buses is the second address, the house keeping computer is suitable to read the transmission data buffer storage mould
Full state in block；
If the address of EMIF buses is three address, the house keeping computer is suitable to read the reception data buffer storage mould
Telecommand in block；
If the address of EMIF buses is four address, the house keeping computer is suitable to read the reception data buffer storage mould
The first telemetry in block；
If the address of EMIF buses is four address, the house keeping computer is suitable to the transmission data cache module
Middle write-in second telemetry.
Such as, setting address information is 5, then the data bulk for receiving FIFO is read in address 0, and address 1 is sent out to read
The full state of FIFO is sent, address 2 receives the telecommand of FIFO to read, and address 3 receives the telemetry of RAM, ground to read
Location 4 is transmission FIFO telemetry data packets.
(10) after house keeping computer detects rising edge interrupt signal, by receive EMIF buses read receive FIFO in
The register of data bulk, then read back the telecommand transmission frame data for being stored in and receiving in FIFO, until reading empty reception FIFO
Shi Buzai produces interruption, i.e. house keeping computer to receive single frames telecommand transmission frame data and completes.
(11) house keeping computer identification instruction type, performs indirect instruction, abandons direct instruction, and telecommand has been processed
Into.
More specifically, from the point of view of the realization of telemetry part, with reference to Fig. 8, the system of technical solution of the present invention includes
The correspondence of following telemetry：
(1) ADC collections are acquired to the analog telemetering data of each peripheral hardware unit of satellite, and the mode of collection is periodically to connect
Continuous collection, frequency is 1K hertz, and the analog telemetering data that ADC acquisition modules will be collected are converted to data signal, and transmission is to connecing
Mouth management module.
(2) interface administration module sends to telemetry after telemetry order is arranged according to telemetry type and receives
Module.
(3) data that telemetry receiver module will be received write reception in a fixed order according to telemetry type
In the reception RAM of cache module, house keeping computer voluntarily reads telemetry at any time；Telemetry is according to 1K hertz
Frequency is updated in reception RAM, to ensure the real-time of telemetry.
(4) house keeping computer reads back telemetry, and treatment telemetry is simultaneously wrapped into sending to sending data buffer storage mould
Transmission FIFO in block, judges to send the full state of FIFO when write-in sends FIFO, and transmission can be write under non-full state
FIFO, otherwise waits for non-full state.
(5) telemetry data packet sending module detection sends the full state of sky of FIFO, shows to send when it is non-null states
There is telemetry bag data in FIFO, now read the data in transmission FIFO and be forwarded to interface administration module；When it is empty
Show there is no telemetry bag data in transmission FIFO during state, no longer read and send FIFO until sending FIFO for non-NULL shape
State.
(6) to answering machine 2, telemetry data packet issues completion to the data is activation that interface administration module will be received.
Specific embodiment of the invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, the description on concrete numerical value is only to illustrate example in the above, above-mentioned concrete numerical value and uses class
Not merely to the specific implementation process of description technical solution of the present invention, those skilled in the art can be in the scope of claim
Various deformations or amendments are inside made, this has no effect on substance of the invention.
Claims (10)
1. a kind of spaceborne remote-control romote-sensing terminal based on FPGA, it is characterised in that including：Interface administration module, data processing mould
Block, receives data cache module and sends data cache module；The interface administration module is suitable to receive respectively outside first should
The telecommand and the first telemetry of machine and the transmission of ADC collectors are answered, and first telemetry is write into the reception
Data cache module；The data processing module is suitable to parse the telecommand and according to the type of the telecommand by institute
State telecommand and write the reception data cache module；When the reception data cache module has the telecommand, then
Outside house keeping computer receives the first actuating signal and is connect described in reading when first actuating signal is the first useful signal
Receive the telecommand that data cache module is present；The transmission data cache module is suitable to store the outside house keeping computer biography
The second telemetry passed, the data processing module is further adapted for reading the second remote measurement that the transmission data cache module is present
Data and by externally connected second answering machine of the interface administration module.
2. spaceborne remote-control romote-sensing terminal as claimed in claim 1, it is characterised in that the interface administration module includes：First
Input, the second input, the first output end and the second output end；The first input end is suitable to receive the outside first should
The serial telecommand of machine transmission is answered, first output end is suitable to transmit parallel telecommand to the data processing mould
Block；Second input is suitable to receive the first telemetry of the ADC collectors transmission, second output end be suitable to by
The first telemetry after sort by type is simultaneously sent to the reception data cache module.
3. spaceborne remote-control romote-sensing terminal as claimed in claim 1, it is characterised in that the reception data cache module includes：
First FIFO memory modules and RAM memory modules；The first FIFO memory modules are suitable to store the telecommand, described
RAM memory modules are suitable to storage first telemetry, when the FIFO memory module non-NULLs, the first effect letter
It is first useful signal number to press first frequency triggering.
4. spaceborne remote-control romote-sensing terminal as claimed in claim 1, it is characterised in that the type of the telecommand includes direct
Instruction and indirect instruction, the telecommand are at least made up of the transmission frame including the leading head of frame and frame data domain, wherein described
Direct instruction is at least made up of the first transmission frame and the second transmission frame, and the frame data domain of the first transmission frame and the second transmission frame is by three
Bar direct instruction code is constituted, and the indirect instruction is only individually to transmit frame；The data processing module includes：Type detection
Unit, state extraction unit and sending module；The kind detecting unit is suitable to receive the distant of the interface administration module transmission
Control is instructed and detects the frame length of the telecommand to judge the type of the telecommand；The state extraction unit is suitable to
One direct instruction first transmission frame or second transmission frame frame data domain meet its direct instruction code all it is identical when perform should
Direct instruction；The sending module is suitable to send the direct instruction and indirect instruction to the reception data cache module.
5. spaceborne remote-control romote-sensing terminal as claimed in claim 1, it is characterised in that the data processing module also includes：It is distant
Survey data transmission unit；The transmission data cache module includes：2nd FIFO memory modules；The 2nd FIFO memory modules
It is suitable to the second telemetry described in storage, when the 2nd FIFO memory modules have second telemetry, then remote measurement
Data transmission unit produces the second actuating signal and reads described second when second actuating signal is the second useful signal
The second telemetry that FIFO memory modules are present, the telemetry transmitting element is further adapted for the second remote measurement number that will be read
According to being forwarded to the interface administration module.
6. a kind of spaceborne remote control telemetering system based on FPGA, it is characterised in that including：First answering machine, ADC collectors,
Two answering machines, the spaceborne remote-control romote-sensing terminal as described in any one of claim 1 to 5 and house keeping computer.
7. spaceborne remote control telemetering system as claimed in claim 6, it is characterised in that the house keeping computer passes through EMIF buses
It is connected with the spaceborne remote-control romote-sensing terminal.
8. spaceborne remote control telemetering system as claimed in claim 7, it is characterised in that the EMIF buses are based on following agreement quilt
Realize：
Address choice EMIF action types according to EMIF buses, wherein：
If the address of EMIF buses is the first address, the house keeping computer is suitable to receive in the reception data cache module
There is the quantity of telecommand；
If the address of EMIF buses is the second address, the house keeping computer is suitable to read in the transmission data cache module
Full state；
If the address of EMIF buses is three address, the house keeping computer is suitable to read in the reception data cache module
Telecommand；
If the address of EMIF buses is four address, the house keeping computer is suitable to read in the reception data cache module
The first telemetry；
If the address of EMIF buses is four address, the house keeping computer is suitable to be write in the transmission data cache module
Enter second telemetry.
9. spaceborne remote control telemetering system as claimed in claim 6, it is characterised in that the ADC collectors are suitable to each to satellite
The analog telemetering data of peripheral hardware unit are acquired to produce first telemetry.
10. a kind of spaceborne remote-control romote-sensing method based on FPGA, based on the spaceborne remote control as described in any one of claim 1 to 5
Telemetry terminal system, it is characterised in that including：
The telecommand and the first telemetry of outside first answering machine and the transmission of ADC collectors are received, and it is distant by described first
Survey data and write the reception data cache module；
Parse the telecommand and delayed the telecommand write-in reception data according to the type of the telecommand
Storing module, the type of the telecommand includes direct instruction and indirect instruction；
When the reception data cache module has the telecommand, then outside house keeping computer receives the first actuating signal simultaneously
The telecommand that the reception data cache module is present is read when first actuating signal is the first useful signal；
Second telemetry of the storage outside house keeping computer transmission simultaneously sends.
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| CN113794498A (en) * | 2021-08-30 | 2021-12-14 | 上海卫星工程研究所 | Serial communication system, method and medium for deep space exploration two-device multi-timing constraint |
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| CN114257645A (en) * | 2021-11-23 | 2022-03-29 | 北京谊安医疗系统股份有限公司 | Embedded modular communication system and communication method thereof |
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| CN116996448A (en) * | 2023-09-27 | 2023-11-03 | 空间液态金属科技发展(江苏)有限公司 | Multi-type multi-channel dynamic rate load data scheduling device and scheduling method thereof |
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