CN105207870A - Spaceborne integrated electronic self-adaptive data bus system and communication method thereof - Google Patents
Spaceborne integrated electronic self-adaptive data bus system and communication method thereof Download PDFInfo
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Abstract
The invention relates to a spaceborne integrated electronic self-adaptive data bus system and a communication method thereof. A bus communication method is based on a dynamic terminal registry, when the bus system is electrified or during the work period of the bus system, the bus terminals can register self information in the bus control end dynamically, the bus control end identifies the dynamic register information to realize flexible bus data interaction, and the bus control end can automatically identify all terminal devices accessing the data bus, and dynamically identify a terminal node, which is added or reduced at certain time, of the data bus. The dynamic communication method of the bus task period is utilized, the data collection period and instruction control period of the bus terminals can be dynamically adjusted during different work periods of satellites, and requirements for flexible adjustment of remote measurement and collection period and instruction control period are satisfied.
Description
Technical field
The present invention relates to a kind of spaceborne integrated electronics self-adapting data bus system and communication means, belong to bus communication technical field.
Background technology
Because bus has, data transmission efficiency is high, reliability is high, be convenient to the features such as the system integration, and in spaceborne Integrated Electronic System, data bus technology is widely used, and bus has become the crucial middleware of spaceborne Integrated Electronic System transfer of data.Spaceborne computer forms a set of distributed spaceborne data system by data/address bus and each slave computer.By data/address bus, spaceborne computer realizes the distribution of director data and the collection of telemetry parameter, and controls and Stateful Inspection each slave computer.
According to different Bus Speeds, integrated electronics data/address bus is divided into two grades, and high speed data bus, generally as level one data bus, provides the transmission of whole star data flow; Low speed data bus, generally as secondary data bus, provides the transfer of data of unit internal module, or provides the data transport service of low speed to satellite platform or payload segment equipment.
At present, there are following 3 problems in spaceborne integrated electronics data/address bus: 1, bus adaptive ability is not enough, bus versatility is poor, the architecture design of data/address bus towards be an interconnected set communication system, data/address bus is only adapted to the terminal access of fixed qty, if bus increases or reduce the change in design that any one terminal equipment all can cause spaceborne computer software in this case; 2, bus data interaction mechanism underaction, spaceborne computer communicates with slave computer according to the data interactive mode designed in advance, the data content of each slave computer, address data memory and addressing range are all appoint in advance and solidify in the middle of On-board software, instead of dynamic realtime renewal, therefore, current data bus architecture can not be applicable to the application scenarios of slave computer Data Dynamic change; 3, bus data acquisition and control cycle can not on-the-fly modify, and are fixed cycle value, cannot meet the demand of parameter acquisition and instruction closed-loop control periodic time self-adapting adjustment.Under Current bus architecture design state, spaceborne computer can only remove according to the fixing cycle telemetry parameter gathering each slave computer, director data is sent to slave computer according to fixing control cycle, and each slave computer data acquisition and instruction control cycle has different frequency demands in satellite launch and each stage of operation, such as, during satellite transfer orbit and satellite position keep, control to need to realize parameter acquisition and instruction closed-loop control faster with propulsion subsystem; During satellite Orbital detection, transponder, antenna subsystem need to realize parameter acquisition and instruction faster and control; During satellite ground shadow, satellite power supply and distribution subsystem needs to realize parameter acquisition and instruction faster and controls, and Current bus architecture design cannot expire above-mentioned demand for services.
Summary of the invention
The technical problem that the present invention solves is: overcome prior art deficiency, there is provided a kind of spaceborne integrated electronics self-adapting data bus system and communication means, the problems such as solution integrated electronics data/address bus adaptive ability deficiency, poor universality, data interaction mechanism and bus duty cycle are dumb.
The technical scheme that the present invention solves is: a kind of communication means of spaceborne integrated electronics self-adapting data bus system, and step is as follows:
(1) define bus system on star and comprise data/address bus, bus marco end and multiple bus termination; Multiple bus termination is connected to bus marco end by data bus cable; Bus termination inside bookbinding terminal dynamic registry; Bus marco end inside bookbinding terminal access state table;
Bus marco end is the main control end of all tasks in bus, the promoter of all bus data transfer tasks, bus termination equipment (RT1-RTN) mounts network on the data bus from node, set each bus termination equipment and only have a unique physical address, this physical address M Bit data represents, each Bit data is 0 or 1, terminal quantity N=2
m-2, M the Bit data complete " 0 " of physical address retains with the address of complete " 1 ";
(2) setting terminal dynamic registry, comprising: response message, task dynamic marks, remote measurement mark, command identification, instruction buffer mark, telemetry information, director data information; Response message, for shaking hands of bus marco end and bus termination, the response message that bus marco end pre-sets is identical with the response message in bus termination; Task dynamic marks, shows whether present terminal can dynamically update terminal dynamic registry; Remote measurement identifies, and shows that present terminal is the need of telemetry-acquisition, includes telemetry service and without telemetry service two states; Command identification, shows that present terminal is distributed the need of instruction, includes instruction and without instruction two states; Instruction buffer identifies, and shows the maximum instruction strip number that present terminal can once inject, namely maximum instruction buffer quantity; Telemetry information, shows present terminal telemetry parameter physical address, data length; Director data information, shows the physical address of present terminal device directive deposit data;
If terminal is the terminal of non-dynamic task, terminal dynamic registry is fixed data and binds in advance in the terminal, and after data/address bus powers on, bus marco end reading terminals dynamic registry, no longer upgrades; If terminal is the terminal of dynamic task, terminal dynamic registry is variable content, in bus communication process, before each access terminal of bus marco end, all can again obtain terminal dynamic registry;
During each access terminal of bus marco end, when remote measurement mark shows that present terminal needs telemetry-acquisition, bus marco end, according to the present terminal telemetry parameter physical address, the data length that define in telemetry information in terminal dynamic registry, obtains telemetry; When remote measurement mark shows that present terminal does not need telemetry-acquisition, bus marco end does not obtain telemetry;
When command identification shows that present terminal needs instruction to distribute, the physical address that bus marco end is deposited according to the present terminal director data defined in director data information, sends instruction to Current bus terminal; The maximum instruction strip number that the present terminal equipment that instruction strip number to the transmission of Current bus terminal is no more than the definition of instruction buffer mark can once inject; When command identification shows that present terminal does not need instruction to distribute, bus marco end does not send director data to Current bus terminal;
For the terminal of dynamic task, in terminal dynamic registry, remote measurement mark, command identification, instruction buffer mark, telemetry information, director data information can change according to setting,
(3) setting terminal access state table, comprises terminal number, access state, instruction task, remote measurement task, dynamic task, instruction cycle, remote measurement cycle;
Access state comprise access, do not access, illegal access three state altogether;
After bus marco end powers on, all bus terminations are all defaulted as non-access state;
Instruction task in terminal access state table, comprise command identification, instruction buffer mark and director data information, read from the command identification in the terminal dynamic registry step (2), instruction buffer mark, director data information by bus marco end is dynamic after the power-up;
Remote measurement task in terminal access state table, comprises remote measurement mark, telemetry information, reads from the remote measurement mark in the terminal dynamic registry step (2), telemetry information by bus marco end is dynamic after the power-up;
Dynamic task in terminal access state table, comprises task dynamic marks, obtains from the task dynamic marks in the terminal dynamic registry step (2) by bus marco end is dynamic after the power-up;
After bus marco end powers on, the instruction task of the terminal in all terminal access state tables, remote measurement task is defaulted as that to be defaulted as without instruction traffic, dynamic task without telemetry service, instruction task be non-dynamic;
Instruction cycle is that bus marco end sends the cycle of instruction to each bus termination;
The remote measurement cycle represents that bus marco end gathers the cycle of telemetry to each bus termination;
There is the highest control on ground in the face of terminal access state table, namely revises terminal access state table by surface instruction, by surface instruction, ground also can forbid that bus marco end obtains the information in terminal dynamic registry from trend bus termination;
(4) bus marco end is on the data bus after electricity, the bus termination all to RT1-RTN in bus carries out poll detection, namely bus marco end obtains terminal dynamic registry to each bus termination successively from RT1 to RTN, when the non-feedback terminal dynamic registry of bus termination, RT address corresponding for bus termination is expressed as and does not access, be i.e. the non-access data bus of this bus termination; When after bus termination feedback terminal dynamic registry, if bus marco end judges that the response message in the terminal dynamic registry of feedback is consistent with the response message that bus marco end prestores, then RT address corresponding for bus termination is expressed as and accesses, namely confirm present terminal equipment access data bus, bus marco end is known currently accessed telemetry service required for bus termination and instruction traffic according to being accessed dynamic registry that bus termination feeds back immediately;
Bus marco end is after reading terminals dynamic registry data, by the information updating of bus termination dynamic registry in the terminal access state table of bus marco end, and the telemetry service of this bus termination and instruction traffic are added in the bus task queue of setting, bus marco end performs telemetry service and instruction traffic according to bus task queue;
If bus marco end judges that the response message whether response message in the terminal dynamic registry fed back prestores with bus marco end is inconsistent, then RT address corresponding for this bus termination is expressed as illegal access by bus marco end, when after the complete all N number of bus terminations of bus marco end poll, the poll of bus termination detects and terminates, and the terminal access state table initial condition in bus marco end is set up complete;
Bus marco end performs telemetry service and the instruction traffic of respective bus terminal according to bus task queue, is expressed as the illegal terminal equipment got involved, the communication that bus marco end will stop this terminal for RT address;
Bus marco end is periodically again expressed as to RT address the bus termination do not accessed and detects, when having detected that new terminal accesses, the then access state of this bus termination that bus marco end amendment terminal access state table is corresponding, and the telemetry service of this terminal equipment and instruction traffic are joined in bus task queue automatically simultaneously;
When bus marco end and some be expressed as the terminal equipment accessed occur that transmitting data interrupts time, then RT address corresponding for this terminal changes to and does not access by bus marco end, and periodically again detects this terminal address.
Each terminal equipment has different instruction control cycles and telemetry-acquisition cycle, and data/address bus completes once command and to send or minimum period of telemetry-acquisition is that the value of T0, T0 can be self-defined, and the value bookbinding of T0 is inner at bus marco end;
The instruction duty cycle of terminal equipment and the periodic regime of remote measurement task are: the scope of T0-nT0, n is: 1 < n≤1024, and n is integer.After bus marco end powers on, the instruction duty cycle of all bus terminations and remote measurement duty cycle are implied value T 1, T0 < T1 < nT0, and the value of T1 can be self-defined.
A kind of spaceborne integrated electronics self-adapting data bus system, comprises data/address bus, bus marco end and multiple bus termination; Multiple bus termination is connected to bus marco end by data bus cable; Bus termination inside bookbinding terminal dynamic registry; Bus marco end comprises terminal access state table;
Bus marco end is the main control end of all tasks in bus, the promoter of all bus data transfer tasks, bus termination equipment (RT1-RTN) mounts network on the data bus from node, set each bus termination equipment and only have a unique physical address, this physical address M Bit data represents, each Bit data is 0 or 1, terminal quantity N=2
m-2, M the Bit data complete " 0 " of physical address retains with the address of complete " 1 ";
Setting terminal dynamic registry, comprising: response message, task dynamic marks, remote measurement mark, command identification, instruction buffer mark, telemetry information, director data information; Response message, for shaking hands of bus marco end and bus termination, the response message that bus marco end pre-sets is identical with the response message in bus termination; Task dynamic marks, shows whether present terminal can dynamically update terminal dynamic registry; Remote measurement identifies, and shows that present terminal is the need of telemetry-acquisition, includes telemetry service and without telemetry service two states; Command identification, shows that present terminal is distributed the need of instruction, includes instruction and without instruction two states; Instruction buffer identifies, and shows the maximum instruction strip number that present terminal can once inject, namely maximum instruction buffer quantity; Telemetry information, shows present terminal telemetry parameter physical address, data length; Director data information, shows the physical address of present terminal device directive deposit data;
If terminal is the terminal of non-dynamic task, terminal dynamic registry is fixed data and binds in advance in the terminal, and after data/address bus powers on, bus marco end reading terminals dynamic registry, no longer upgrades; If terminal is the terminal of dynamic task, terminal dynamic registry is variable content, in bus communication process, before each access terminal of bus marco end, all can again obtain terminal dynamic registry;
During each access terminal of bus marco end, when remote measurement mark shows that present terminal needs telemetry-acquisition, bus marco end, according to the present terminal telemetry parameter physical address, the data length that define in telemetry information in terminal dynamic registry, obtains telemetry; When remote measurement mark shows that present terminal does not need telemetry-acquisition, bus marco end does not obtain telemetry;
When command identification shows that present terminal needs instruction to distribute, the physical address that bus marco end is deposited according to the present terminal director data defined in director data information, sends instruction to Current bus terminal; The maximum instruction strip number that the present terminal equipment that instruction strip number to the transmission of Current bus terminal is no more than the definition of instruction buffer mark can once inject; When command identification shows that present terminal does not need instruction to distribute, bus marco end does not send director data to Current bus terminal;
For the terminal of dynamic task, in terminal dynamic registry, remote measurement mark, command identification, instruction buffer mark, telemetry information, director data information can change according to setting,
Setting terminal access state table, comprises terminal number, access state, instruction task, remote measurement task, dynamic task, instruction cycle, remote measurement cycle;
Access state comprise access, do not access, illegal access three state altogether;
After bus marco end powers on, all bus terminations are all defaulted as non-access state;
Instruction task in terminal access state table, comprises command identification, instruction buffer mark and director data information, reads from the command identification terminal dynamic registry, instruction buffer mark, director data information by bus marco end is dynamic after the power-up,
Remote measurement task in terminal access state table, comprises remote measurement mark, telemetry information, reads from the remote measurement mark terminal dynamic registry, telemetry information by bus marco end is dynamic after the power-up;
Dynamic task in terminal access state table, comprises task dynamic marks, obtains from the task dynamic marks terminal dynamic registry by bus marco end is dynamic after the power-up;
After bus marco end powers on, the instruction task of the terminal in all terminal access state tables, remote measurement task is defaulted as that to be defaulted as without telemetry service, dynamic task without instruction, remote measurement task be non-dynamic;
Instruction cycle is that bus marco end sends the cycle of instruction to each bus termination;
The remote measurement cycle represents that bus marco end gathers the cycle of telemetry to each bus termination;
There is the highest control on ground in the face of terminal access state table, namely revises terminal access state table by surface instruction, by surface instruction, ground also can forbid that bus marco end obtains the information in terminal dynamic registry from trend bus termination;
Bus marco end is on the data bus after electricity, the bus termination all to RT1-RTN in bus carries out poll detection, namely bus marco end obtains terminal dynamic registry to each bus termination successively from RT1 to RTN, when the non-feedback terminal dynamic registry of bus termination, RT address corresponding for bus termination is expressed as and does not access, be i.e. the non-access data bus of this bus termination; When after bus termination feedback terminal dynamic registry, if bus marco end judges that whether the response message in the terminal dynamic registry fed back is consistent with the response message that bus marco end prestores, then RT address corresponding for bus termination is expressed as and accesses, namely confirm present terminal equipment access data bus, bus marco end is known currently accessed telemetry service required for bus termination and instruction traffic according to being accessed dynamic registry that bus termination feeds back immediately;
Bus marco end is after reading terminals dynamic registry data, by the information updating of bus termination dynamic registry in the terminal access state table of bus marco end, and the telemetry service of this bus termination and instruction traffic are added in the bus task queue of setting, bus marco end performs telemetry service and instruction traffic according to bus task queue;
If bus marco end judges that the response message whether response message in the terminal dynamic registry fed back prestores with bus marco end is inconsistent, then RT address corresponding for this bus termination is expressed as illegal access by bus marco end, when after the complete all N number of bus terminations of bus marco end poll, the poll of bus termination detects and terminates, and the terminal access state table initial condition in bus marco end is set up complete;
Bus marco end performs telemetry service and the instruction traffic of respective bus terminal according to bus task queue, is expressed as the illegal terminal equipment got involved, the communication that bus marco end will stop this terminal for RT address;
Bus marco end is periodically again expressed as to RT address the bus termination do not accessed and detects, when having detected that new terminal accesses, the then access state of this bus termination that bus marco end amendment terminal access state table is corresponding, and the telemetry service of this terminal equipment and instruction traffic are joined in bus task queue automatically simultaneously;
When bus marco end and some be expressed as the terminal equipment accessed occur that transmitting data interrupts time, then RT address corresponding for this terminal changes to and does not access by bus marco end, and periodically again detects this terminal address.
The present invention's advantage is compared with prior art:
(1) the present invention adopts adaptive bus communication, bus system after the power-up, bus marco end can identify the terminal equipment of all access data buses automatically, and can in bus duration of work dynamic identification data bus the terminal node that increases newly or reduce of a certain moment.
(2) the present invention adopts the bus communication based on terminal dynamic registry, bus termination can after bus system powers on or bus system duration of work, dynamically self information is registered to bus marco end, bus marco end, by identifying dynamic registration information, realizes bus data flexibly mutual.
(3) the present invention adopts dynamic bus duty cycle communication means, the dynamic conditioning of bus termination data collection cycle and instruction control cycle can be realized, with the demand meeting the telemetry-acquisition cycle, instruction control cycle adjusts flexibly at the different times of satellite operation.
Accompanying drawing explanation
Fig. 1 is data bus architecture schematic diagram of the present invention;
Fig. 2 is self-adapting data bus communication flow chart of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, as shown in Figure 1, a kind of spaceborne integrated electronics self-adapting data bus system, this bus system comprises data/address bus, bus marco end and multiple bus termination; Multiple bus termination is connected to bus marco end by data bus cable; Bus termination inside bookbinding terminal dynamic registry; Bus marco end inside bookbinding terminal access state table;
Bus marco end is the main control end of all tasks in bus, the promoter of all bus data transfer tasks, bus termination equipment (RT1-RTN) mounts network on the data bus from node, set each bus termination equipment and only have a unique physical address, this physical address M Bit data represents, each Bit data is 0 or 1, terminal quantity N=2
m-2, M the Bit data complete " 0 " of physical address retains with the address of complete " 1 ", and such as: when M is 5, then terminal quantity is 30;
Setting terminal dynamic registry is as shown in the table, comprising: response message, task dynamic marks, remote measurement mark, command identification, instruction buffer mark, telemetry information, director data information; Response message, for shaking hands of bus marco end and bus termination, the response message that bus marco end pre-sets is identical with the response message in bus termination; Task dynamic marks, shows whether present terminal can dynamically update terminal dynamic registry; Remote measurement identifies, and shows that present terminal is the need of telemetry-acquisition, includes telemetry service and without telemetry service two states; Command identification, shows that present terminal is distributed the need of instruction, includes instruction and without instruction two states; Instruction buffer identifies, and shows the maximum instruction strip number that present terminal can once inject, namely maximum instruction buffer quantity; Telemetry information, shows present terminal telemetry parameter physical address, data length; Director data information, shows the physical address of present terminal device directive deposit data;
| Project | Lexical or textual analysis |
| Response message | For shaking hands of bus marco end and terminal data, such as: 0xA5A5 |
| Task dynamic marks | Show whether present terminal can dynamically update terminal dynamic registry |
| Remote measurement identifies | Show that present terminal is the need of telemetry-acquisition |
| Command identification | Show that present terminal is distributed the need of instruction |
| Instruction buffer identifies | Show the maximum instruction strip number that present terminal can once inject |
| Telemetry information | Show present terminal telemetry parameter physical address, data length |
| Director data information | Show the physical address of present terminal device directive deposit data |
If terminal is the terminal of non-dynamic task, terminal dynamic registry is fixed data and binds in advance in the terminal, and after data/address bus powers on, bus marco end reading terminals dynamic registry, no longer upgrades; If terminal is the terminal of dynamic task, terminal dynamic registry is variable content, in bus communication process, before each access terminal of bus marco end, all can again obtain terminal dynamic registry;
During each access terminal of bus marco end, when remote measurement mark shows that present terminal needs telemetry-acquisition, bus marco end, according to the present terminal telemetry parameter physical address, the data length that define in telemetry information in terminal dynamic registry, obtains telemetry; When remote measurement mark shows that present terminal does not need telemetry-acquisition, bus marco end does not obtain telemetry;
When command identification shows that present terminal needs instruction to distribute, the physical address that bus marco end is deposited according to the present terminal director data defined in director data information, sends instruction to Current bus terminal; The maximum instruction strip number that the present terminal equipment that instruction strip number to the transmission of Current bus terminal is no more than the definition of instruction buffer mark can once inject; When command identification shows that present terminal does not need instruction to distribute, bus marco end does not send director data to Current bus terminal;
For the terminal of dynamic task, in terminal dynamic registry, remote measurement mark, command identification, instruction buffer mark, telemetry information, director data information can change according to setting;
Setting terminal access state table, comprises terminal number, access state, instruction task, remote measurement task, dynamic task, instruction cycle, remote measurement cycle; Terminal access state table is as shown in the table:
Access state comprise access, do not access, illegal access three state altogether;
After bus marco end powers on, all bus terminations are all defaulted as non-access state;
Instruction task in terminal access state table, comprises command identification, instruction buffer mark and director data information, reads from the command identification terminal dynamic registry, instruction buffer mark, director data information by bus marco end is dynamic after the power-up;
Remote measurement task in terminal access state table, comprises remote measurement mark, telemetry information, reads from the remote measurement mark terminal dynamic registry, telemetry information by bus marco end is dynamic after the power-up;
Dynamic task in terminal access state table, comprises task dynamic marks, obtains from the task dynamic marks terminal dynamic registry by bus marco end is dynamic after the power-up;
After bus marco end powers on, the instruction task of the terminal in all terminal access state tables, remote measurement task is defaulted as that to be defaulted as without telemetry service, dynamic task without instruction, remote measurement task be non-dynamic;
Instruction cycle is that bus marco end sends the cycle of instruction to each bus termination;
The remote measurement cycle represents that bus marco end gathers the cycle of telemetry to each bus termination;
Instruction cycle and remote measurement cycle can adjust according to the different demands in satellite transit process, and the minimum duty cycle of bus is that the value of T0, T0 can be carried out self-defined according to the application scenarios of bus, and the value bookbinding of T0 is inner at bus marco end.The duty cycle scope of terminal equipment is: the scope of T0-nT0, n: 1 < n≤1024.After bus marco end powers on, the instruction duty cycle of all bus terminations and remote measurement duty cycle are implied value T 1, T0 < T1 < nT0, and the value of T1 can be carried out self-defined according to the application scenarios of bus.Such as definition of T 0 is 64ms, definition of T I is 256ms.
There is the highest control on ground in the face of terminal access state table, namely revises terminal access state table by surface instruction, by surface instruction, ground also can forbid that bus marco end obtains the information in terminal dynamic registry from trend bus termination;
Bus marco end is on the data bus after electricity, the bus termination all to RT1-RTN in bus carries out poll detection, namely bus marco end obtains terminal dynamic registry to each bus termination successively from RT1 to RTN, when the non-feedback terminal dynamic registry of bus termination, RT address corresponding for bus termination is expressed as and does not access, be i.e. the non-access data bus of this bus termination; When after bus termination feedback terminal dynamic registry, if bus marco end judges that whether the response message in the terminal dynamic registry fed back is consistent with the response message that bus marco end prestores, then RT address corresponding for bus termination is expressed as and accesses, namely confirm present terminal equipment access data bus, bus marco end is known currently accessed telemetry service required for bus termination and instruction traffic according to being accessed dynamic registry that bus termination feeds back immediately;
Bus marco end is after reading terminals dynamic registry data, by the information updating of bus termination dynamic registry in the terminal access state table of bus marco end, and the telemetry service of this bus termination and instruction traffic are added in the bus task queue of setting, bus marco end performs telemetry service and instruction traffic according to bus task queue;
If bus marco end judges that the response message whether response message in the terminal dynamic registry fed back prestores with bus marco end is inconsistent, then RT address corresponding for this bus termination is expressed as illegal access by bus marco end, when after the complete all N number of bus terminations of bus marco end poll, the poll of bus termination detects and terminates, and the terminal access state table initial condition in bus marco end is set up complete.
Bus termination access state table process of establishing as shown in Figure 2;
Bus marco end performs telemetry service and the instruction traffic of respective bus terminal according to bus task queue, is expressed as the illegal terminal equipment got involved, the communication that bus marco end will stop this terminal for RT address;
Bus marco end is periodically again expressed as to RT address the bus termination do not accessed and detects, when having detected that new terminal accesses, the then access state of this bus termination that bus marco end amendment terminal access state table is corresponding, and the telemetry service of this terminal equipment and instruction traffic are joined in bus task queue automatically simultaneously;
When bus marco end and some be expressed as the terminal equipment accessed occur that transmitting data interrupts time, then RT address corresponding for this terminal changes to and does not access by bus marco end, and periodically again detects this terminal address.
A communication means for spaceborne integrated electronics self-adapting data bus system, step is as follows:
(1) define bus system on star and comprise data/address bus, bus marco end and multiple bus termination; Multiple bus termination is connected to bus marco end by data bus cable; Bus termination inside bookbinding terminal dynamic registry; Bus marco end inside bookbinding terminal access state table;
Bus marco end is the main control end of all tasks in bus, the promoter of all bus data transfer tasks, bus termination equipment (RT1-RTN) mounts network on the data bus from node, set each bus termination equipment and only have a unique physical address, this physical address M Bit data represents, each Bit data is 0 or 1, terminal quantity N=2
m-2, M the Bit data complete " 0 " of physical address retains with the address of complete " 1 ", and such as: when M is 5, then terminal quantity is 30;
(2) for realizing the dynamic registration of terminal self task, at bus termination inner setting terminal dynamic registry, comprising: response message, task dynamic marks, remote measurement mark, command identification, instruction buffer mark, telemetry information, director data information; Response message, for shaking hands of bus marco end and bus termination, the response message that bus marco end pre-sets is identical with the response message in bus termination, such as the response message of bus marco end and bus termination is set to 0xA5A5, only has and correctly response message is bound for 0xA5A5 bus termination equipment could by the identification of bus marco end; Task dynamic marks, shows whether present terminal can dynamically update terminal dynamic registry; Remote measurement identifies, show that present terminal is the need of telemetry-acquisition, include telemetry service and without telemetry service two states, the telemetry service of bus termination refers generally to bus termination for other equipment of satellite provides telemetry parameter collection, and telemetry parameter type comprises analog quantity remote measurement, Temperature Quantity remote measurement, digital quantity remote measurement etc.; Command identification, show that present terminal is distributed the need of instruction, include instruction and without instruction two states, the instruction of bus termination equipment be generally used for change bus termination oneself state or by bus termination device forwards to other equipment of satellite, and control the state of other equipment of satellite; Instruction buffer identifies, and shows the maximum instruction strip number that present terminal can once inject, namely maximum instruction buffer quantity, and such as defined instruction buffering quantity is 10, then represent that bus marco end once can only send 10 instructions to this bus termination equipment at most; Telemetry information, shows present terminal telemetry parameter physical address, data length, and such as defining telemetry parameter physical address is 0x1000, data length 0x0100; Director data information, shows the physical address of present terminal device directive deposit data, and such as defined instruction data physical address is 0x5000, then bus marco end is the space transmission director data of 0x5000 to present terminal device address;
If terminal is the terminal of non-dynamic task, terminal dynamic registry is fixed data and binds in advance in the terminal, after data/address bus powers on, bus marco end reading terminals dynamic registry, in consecutive Bus lines communication process, bus marco end no longer upgrades the terminal dynamic registry of this terminal equipment; If terminal is the terminal of dynamic task, terminal dynamic registry is variable content, in bus communication process, before each access terminal of bus marco end, all can again obtain terminal dynamic registry;
During each access terminal of bus marco end, when remote measurement mark shows that present terminal needs telemetry-acquisition, bus marco end is according to the present terminal telemetry parameter physical address, the data length that define in telemetry information in terminal dynamic registry, obtain telemetry, the telemetry parameter that telemetry gathers for Current bus terminal; When remote measurement mark shows that present terminal does not need telemetry-acquisition, bus marco end does not obtain telemetry;
When command identification shows that present terminal needs instruction to distribute, the physical address that bus marco end is deposited according to the present terminal director data defined in director data information, sends instruction to Current bus terminal; The maximum instruction strip number that the present terminal equipment that instruction strip number to the transmission of Current bus terminal is no more than the definition of instruction buffer mark can once inject; When command identification shows that present terminal does not need instruction to distribute, bus marco end does not send director data to Current bus terminal;
For the terminal of dynamic task, in terminal dynamic registry, remote measurement mark, command identification, instruction buffer mark, telemetry information, director data information can change according to setting, such as remote measurement mark has been changed to remote measurement from without remote measurement, and the remote measurement physical address in telemetry information and data length change.
(3) for realizing the dynamic management of bus marco end to each bus termination, at bus marco end inner setting terminal access state table, terminal number, access state, instruction task, remote measurement task, dynamic task, instruction cycle, remote measurement cycle is comprised;
Access state comprise access, do not access, illegal access three state altogether;
After bus marco end powers on, all bus terminations are all defaulted as non-access state;
Instruction task in terminal access state table, comprise command identification, instruction buffer mark and director data information, read from the command identification in the terminal dynamic registry step (2), instruction buffer mark, director data information by bus marco end is dynamic after the power-up;
Remote measurement task in terminal access state table, comprises remote measurement mark, telemetry information, reads from the remote measurement mark in the terminal dynamic registry step (2), telemetry information by bus marco end is dynamic after the power-up;
Dynamic task in terminal access state table, comprises task dynamic marks, obtains from the task dynamic marks in the terminal dynamic registry step (2) by bus marco end is dynamic after the power-up;
After bus marco end powers on, the instruction task of the terminal in all terminal access state tables, remote measurement task is defaulted as that to be defaulted as without instruction traffic, dynamic task without telemetry service, instruction task be non-dynamic;
Instruction cycle is that bus marco end sends the cycle of instruction to each bus termination;
The remote measurement cycle represents that bus marco end gathers the cycle of telemetry to each bus termination;
Faced by ground, terminal access state table has the highest control, namely by the arbitrary content in surface instruction amendment terminal access state table, such as by surface instruction, the dynamic task of RT01 in terminal access state table mark is revised as dynamically from non-dynamic, when then bus marco end accesses RT01 at every turn, all again can obtain the terminal dynamic registry of RT01.By surface instruction, ground also can forbid that bus marco end obtains the information in terminal dynamic registry from trend bus termination;
(4) bus marco end is on the data bus after electricity, the bus termination all to RT1-RTN in bus carries out poll detection, namely bus marco end obtains terminal dynamic registry to each bus termination successively from RT1 to RTN, when the non-feedback terminal dynamic registry of bus termination, RT address corresponding for bus termination is expressed as and does not access, be i.e. the non-access data bus of this bus termination; When after bus termination feedback terminal dynamic registry, if bus marco end judges that the response message in the terminal dynamic registry of feedback is consistent with the response message that bus marco end prestores, then RT address corresponding for bus termination is expressed as and accesses, namely confirm present terminal equipment access data bus, bus marco end is known currently accessed telemetry service required for bus termination and instruction traffic according to being accessed dynamic registry that bus termination feeds back immediately;
Bus marco end is after reading terminals dynamic registry data, by the information updating of bus termination dynamic registry in the terminal access state table of bus marco end, and the telemetry service of this bus termination and instruction traffic are added in the bus task queue of setting, bus marco end performs telemetry service needed for each terminal equipment and instruction traffic according to bus task queue;
If the response message that the response message in the terminal dynamic registry of bus marco end judgement feedback and bus marco end prestore is inconsistent, then RT address corresponding for this bus termination is expressed as illegal access by bus marco end, when after the complete all N number of bus terminations of bus marco end poll, the poll of bus termination detects and terminates, terminal access state table initial condition in bus marco end is set up complete, and terminal access state table initial state Establishing process as shown in Figure 2;
Bus marco end performs telemetry service and the instruction traffic of respective bus terminal according to bus task queue, the illegal terminal equipment got involved is expressed as RT address, the communication that bus marco end will stop this terminal, if wish again to attempt recommunicating with this terminal equipment illegally got involved in ground, can ground remote control instruction modification terminal access state table be passed through, the access state of this terminal is revised as from illegal access and not access;
Bus marco end is periodically again expressed as to RT address the bus termination do not accessed and detects, when having detected that new terminal accesses, the then access state of this bus termination that bus marco end amendment terminal access state table is corresponding, and the telemetry service of this terminal equipment and instruction traffic are joined in bus task queue automatically simultaneously;
When bus marco end and some be expressed as the terminal equipment accessed occur that transmitting data interrupts time, then RT address corresponding for this terminal changes to and does not access by bus marco end, and periodically again detects this terminal address.
The present invention is applied in satellite Integrated Electronic System data bus communication, self-adapting data bus communication efficiently solves the problems such as bus versatility is poor, bus data interaction mechanism is dumb, bus duty cycle can not on-the-fly modify, and effectively improves adaptivity and the flexibility of satellite data bus communication.
Non-elaborated part of the present invention belongs to techniques well known.
Claims (3)
1. a communication means for spaceborne integrated electronics self-adapting data bus system, is characterized in that step is as follows:
(1) define bus system on star and comprise data/address bus, bus marco end and multiple bus termination; Multiple bus termination is connected to bus marco end by data bus cable; Bus termination inside bookbinding terminal dynamic registry; Bus marco end inside bookbinding terminal access state table;
Bus marco end is the main control end of all tasks in bus, the promoter of all bus data transfer tasks, bus termination equipment (RT1-RTN) mounts network on the data bus from node, set each bus termination equipment and only have a unique physical address, this physical address M Bit data represents, each Bit data is 0 or 1, terminal quantity N=2
m-2, M the Bit data complete " 0 " of physical address retains with the address of complete " 1 ";
(2) setting terminal dynamic registry, comprising: response message, task dynamic marks, remote measurement mark, command identification, instruction buffer mark, telemetry information, director data information; Response message, for shaking hands of bus marco end and bus termination, the response message that bus marco end pre-sets is identical with the response message in bus termination; Task dynamic marks, shows whether present terminal can dynamically update terminal dynamic registry; Remote measurement identifies, and shows that present terminal is the need of telemetry-acquisition, includes telemetry service and without telemetry service two states; Command identification, shows that present terminal is distributed the need of instruction, includes instruction and without instruction two states; Instruction buffer identifies, and shows the maximum instruction strip number that present terminal can once inject, namely maximum instruction buffer quantity; Telemetry information, shows present terminal telemetry parameter physical address, data length; Director data information, shows the physical address of present terminal device directive deposit data;
If terminal is the terminal of non-dynamic task, terminal dynamic registry is fixed data and binds in advance in the terminal, and after data/address bus powers on, bus marco end reading terminals dynamic registry, no longer upgrades; If terminal is the terminal of dynamic task, terminal dynamic registry is variable content, in bus communication process, before each access terminal of bus marco end, all can again obtain terminal dynamic registry;
During each access terminal of bus marco end, when remote measurement mark shows that present terminal needs telemetry-acquisition, bus marco end, according to the present terminal telemetry parameter physical address, the data length that define in telemetry information in terminal dynamic registry, obtains telemetry; When remote measurement mark shows that present terminal does not need telemetry-acquisition, bus marco end does not obtain telemetry;
When command identification shows that present terminal needs instruction to distribute, the physical address that bus marco end is deposited according to the present terminal director data defined in director data information, sends instruction to Current bus terminal; The maximum instruction strip number that the present terminal equipment that instruction strip number to the transmission of Current bus terminal is no more than the definition of instruction buffer mark can once inject; When command identification shows that present terminal does not need instruction to distribute, bus marco end does not send director data to Current bus terminal;
For the terminal of dynamic task, in terminal dynamic registry, remote measurement mark, command identification, instruction buffer mark, telemetry information, director data information can change according to setting,
(3) setting terminal access state table, comprises terminal number, access state, instruction task, remote measurement task, dynamic task, instruction cycle, remote measurement cycle;
Access state comprise access, do not access, illegal access three state altogether;
After bus marco end powers on, all bus terminations are all defaulted as non-access state;
Instruction task in terminal access state table, comprise command identification, instruction buffer mark and director data information, read from the command identification in the terminal dynamic registry step (2), instruction buffer mark, director data information by bus marco end is dynamic after the power-up;
Remote measurement task in terminal access state table, comprises remote measurement mark, telemetry information, reads from the remote measurement mark in the terminal dynamic registry step (2), telemetry information by bus marco end is dynamic after the power-up;
Dynamic task in terminal access state table, comprises task dynamic marks, obtains from the task dynamic marks in the terminal dynamic registry step (2) by bus marco end is dynamic after the power-up;
After bus marco end powers on, the instruction task of the terminal in all terminal access state tables, remote measurement task is defaulted as that to be defaulted as without instruction traffic, dynamic task without telemetry service, instruction task be non-dynamic;
Instruction cycle is that bus marco end sends the cycle of instruction to each bus termination;
The remote measurement cycle represents that bus marco end gathers the cycle of telemetry to each bus termination;
There is the highest control on ground in the face of terminal access state table, namely revises terminal access state table by surface instruction, by surface instruction, ground also can forbid that bus marco end obtains the information in terminal dynamic registry from trend bus termination;
(4) bus marco end is on the data bus after electricity, the bus termination all to RT1-RTN in bus carries out poll detection, namely bus marco end obtains terminal dynamic registry to each bus termination successively from RT1 to RTN, when the non-feedback terminal dynamic registry of bus termination, RT address corresponding for bus termination is expressed as and does not access, be i.e. the non-access data bus of this bus termination; When after bus termination feedback terminal dynamic registry, if bus marco end judges that the response message in the terminal dynamic registry of feedback is consistent with the response message that bus marco end prestores, then RT address corresponding for bus termination is expressed as and accesses, namely confirm present terminal equipment access data bus, bus marco end is known currently accessed telemetry service required for bus termination and instruction traffic according to being accessed dynamic registry that bus termination feeds back immediately;
Bus marco end is after reading terminals dynamic registry data, by the information updating of bus termination dynamic registry in the terminal access state table of bus marco end, and the telemetry service of this bus termination and instruction traffic are added in the bus task queue of setting, bus marco end performs telemetry service and instruction traffic according to bus task queue;
If bus marco end judges that the response message whether response message in the terminal dynamic registry fed back prestores with bus marco end is inconsistent, then RT address corresponding for this bus termination is expressed as illegal access by bus marco end, when after the complete all N number of bus terminations of bus marco end poll, the poll of bus termination detects and terminates, and the terminal access state table initial condition in bus marco end is set up complete;
Bus marco end performs telemetry service and the instruction traffic of respective bus terminal according to bus task queue, is expressed as the illegal terminal equipment got involved, the communication that bus marco end will stop this terminal for RT address;
Bus marco end is periodically again expressed as to RT address the bus termination do not accessed and detects, when having detected that new terminal accesses, the then access state of this bus termination that bus marco end amendment terminal access state table is corresponding, and the telemetry service of this terminal equipment and instruction traffic are joined in bus task queue automatically simultaneously;
When bus marco end and some be expressed as the terminal equipment accessed occur that transmitting data interrupts time, then RT address corresponding for this terminal changes to and does not access by bus marco end, and periodically again detects this terminal address.
2. the communication means of a kind of spaceborne integrated electronics self-adapting data bus system according to claim 1, it is characterized in that: each terminal equipment has different instruction control cycles and telemetry-acquisition cycle, the minimum period that data/address bus completes once command transmission or telemetry-acquisition is T0, the value of T0 can be self-defined, and the value bookbinding of T0 is inner at bus marco end;
The instruction duty cycle of terminal equipment and the periodic regime of remote measurement task are: T0-nT0, the scope of n is: 1 < n≤1024, after bus marco end powers on, instruction duty cycle and the remote measurement duty cycle of all bus terminations are implied value T 1, T0 < T1 < nT0, the value of T1 can be self-defined.
3. one according to claim 1 spaceborne integrated electronics self-adapting data bus system, is characterized in that: comprise data/address bus, bus marco end and multiple bus termination; Multiple bus termination is connected to bus marco end by data bus cable; Bus termination inside bookbinding terminal dynamic registry; Bus marco end comprises terminal access state table;
Bus marco end is the main control end of all tasks in bus, the promoter of all bus data transfer tasks, bus termination equipment RT, i.e. RT1 to RTN, be mount network on the data bus from node, set each bus termination equipment and only have a unique physical address, this physical address M Bit data represents, each Bit data is 0 or 1, terminal quantity N=2
m-2, M the Bit data complete " 0 " of physical address retains with the address of complete " 1 "; N is positive integer;
Setting terminal dynamic registry, comprising: response message, task dynamic marks, remote measurement mark, command identification, instruction buffer mark, telemetry information, director data information; Response message, for shaking hands of bus marco end and bus termination, the response message that bus marco end pre-sets is identical with the response message in bus termination; Task dynamic marks, shows whether present terminal can dynamically update terminal dynamic registry; Remote measurement identifies, and shows that present terminal is the need of telemetry-acquisition, includes telemetry service and without telemetry service two states; Command identification, shows that present terminal is distributed the need of instruction, includes instruction and without instruction two states; Instruction buffer identifies, and shows the maximum instruction strip number that present terminal can once inject, namely maximum instruction buffer quantity; Telemetry information, shows present terminal telemetry parameter physical address, data length; Director data information, shows the physical address of present terminal device directive deposit data;
If terminal is the terminal of non-dynamic task, terminal dynamic registry is fixed data and binds in advance in the terminal, and after data/address bus powers on, bus marco end reading terminals dynamic registry, no longer upgrades; If terminal is the terminal of dynamic task, terminal dynamic registry is variable content, in bus communication process, before each access terminal of bus marco end, all can again obtain terminal dynamic registry;
During each access terminal of bus marco end, when remote measurement mark shows that present terminal needs telemetry-acquisition, bus marco end, according to the present terminal telemetry parameter physical address, the data length that define in telemetry information in terminal dynamic registry, obtains telemetry; When remote measurement mark shows that present terminal does not need telemetry-acquisition, bus marco end does not obtain telemetry;
When command identification shows that present terminal needs instruction to distribute, the physical address that bus marco end is deposited according to the present terminal director data defined in director data information, sends instruction to Current bus terminal; The maximum instruction strip number that the present terminal equipment that instruction strip number to the transmission of Current bus terminal is no more than the definition of instruction buffer mark can once inject; When command identification shows that present terminal does not need instruction to distribute, bus marco end does not send director data to Current bus terminal;
For the terminal of dynamic task, in terminal dynamic registry, remote measurement mark, command identification, instruction buffer mark, telemetry information, director data information can change according to setting,
Setting terminal access state table, comprises terminal number, access state, instruction task, remote measurement task, dynamic task, instruction cycle, remote measurement cycle;
Access state comprise access, do not access, illegal access three state altogether;
After bus marco end powers on, all bus terminations are all defaulted as non-access state;
Instruction task in terminal access state table, comprises command identification, instruction buffer mark and director data information, reads from the command identification terminal dynamic registry, instruction buffer mark, director data information by bus marco end is dynamic after the power-up,
Remote measurement task in terminal access state table, comprises remote measurement mark, telemetry information, reads from the remote measurement mark terminal dynamic registry, telemetry information by bus marco end is dynamic after the power-up;
Dynamic task in terminal access state table, comprises task dynamic marks, obtains from the task dynamic marks terminal dynamic registry by bus marco end is dynamic after the power-up;
After bus marco end powers on, the instruction task of the terminal in all terminal access state tables, remote measurement task is defaulted as that to be defaulted as without telemetry service, dynamic task without instruction, remote measurement task be non-dynamic;
Instruction cycle is that bus marco end sends the cycle of instruction to each bus termination;
The remote measurement cycle represents that bus marco end gathers the cycle of telemetry to each bus termination;
There is the highest control on ground in the face of terminal access state table, namely revises terminal access state table by surface instruction, by surface instruction, ground also can forbid that bus marco end obtains the information in terminal dynamic registry from trend bus termination;
Bus marco end is on the data bus after electricity, the bus termination all to RT1-RTN in bus carries out poll detection, namely bus marco end obtains terminal dynamic registry to each bus termination successively from RT1 to RTN, when the non-feedback terminal dynamic registry of bus termination, RT address corresponding for bus termination is expressed as and does not access, be i.e. the non-access data bus of this bus termination; When after bus termination feedback terminal dynamic registry, if bus marco end judges that whether the response message in the terminal dynamic registry fed back is consistent with the response message that bus marco end prestores, then RT address corresponding for bus termination is expressed as and accesses, namely confirm present terminal equipment access data bus, bus marco end is known currently accessed telemetry service required for bus termination and instruction traffic according to being accessed dynamic registry that bus termination feeds back immediately;
Bus marco end is after reading terminals dynamic registry data, by the information updating of bus termination dynamic registry in the terminal access state table of bus marco end, and the telemetry service of this bus termination and instruction traffic are added in the bus task queue of setting, bus marco end performs telemetry service and instruction traffic according to bus task queue;
If bus marco end judges that the response message whether response message in the terminal dynamic registry fed back prestores with bus marco end is inconsistent, then RT address corresponding for this bus termination is expressed as illegal access by bus marco end, when after the complete all N number of bus terminations of bus marco end poll, the poll of bus termination detects and terminates, and the terminal access state table initial condition in bus marco end is set up complete;
Bus marco end performs telemetry service and the instruction traffic of respective bus terminal according to bus task queue, is expressed as the illegal terminal equipment got involved, the communication that bus marco end will stop this terminal for RT address;
Bus marco end is periodically again expressed as to RT address the bus termination do not accessed and detects, when having detected that new terminal accesses, the then access state of this bus termination that bus marco end amendment terminal access state table is corresponding, and the telemetry service of this terminal equipment and instruction traffic are joined in bus task queue automatically simultaneously;
When bus marco end and some be expressed as the terminal equipment accessed occur that transmitting data interrupts time, then RT address corresponding for this terminal changes to and does not access by bus marco end, and periodically again detects this terminal address.
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