CN105897328B - A kind of communication means of microsatellite information processing system - Google Patents
A kind of communication means of microsatellite information processing system Download PDFInfo
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- CN105897328B CN105897328B CN201610266204.9A CN201610266204A CN105897328B CN 105897328 B CN105897328 B CN 105897328B CN 201610266204 A CN201610266204 A CN 201610266204A CN 105897328 B CN105897328 B CN 105897328B
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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
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18519—Operations control, administration or maintenance
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Abstract
The invention discloses a kind of microsatellite information processing system and its communication means, the system includes Star Service control management module, power supply and thermal control module, observing and controlling baseband module, navigation positioning module sum and passes baseband module, a direct current carrier communication unit is embedded with each module, and each module is connected on dc source communication bus, to realize the information exchange between each module by the dc source communication bus.This method includes telemetric data communication flow and telecommand communication process.The standardization of electronic equipment, modularization on star can be improved by the information processing system, reduce the complexity of satellite cable net design, the reliability of information processing system is improved, standardization development, modularization assembling, mass production, the microsatellite development trend of rapid application is met.
Description
Technical field
The present invention relates to microsatellite master-plan field, more particularly to a kind of modular microsatellite information processing system
System and its communication means.
Background technology
The main task of satellite information processing system is to be connected with each other the electronic equipment on satellite, realizes that inside satellite is believed
Collection, processing and the control of breath, its major function include：Comprehensive Star Service management, Attitude and orbit control, power supply and thermistor(-ter)
Reason, TT＆C Management, load data transmission and navigator fix.
The information transfer of current microsatellite information processing system is main based on communication bus, such as CAN, RS485
Bus etc.；Meanwhile, in addition to a variety of exclusive data order wires such as direct instruction line, analog acquisition line, digital data acquisition line.Mesh
There is following defect in this kind of preceding microsatellite information processing system：It is the disunity of communication interface, nonstandard, it will cause on satellite
Electric room there is the risk that interferes, be unfavorable for signal transmission compatible design；Data telecommunication line diversity, is unfavorable for
Fast integration is tested；Communication interface annexation is complicated, is unfavorable for fault location；Data telecommunication line species is more, connection is complicated tight
Ghost image rings the R＆D capability of microsatellite standardization, modularization and mass.
The developing direction of Future Satellite is " good, fast, save ", and microsatellite of new generation is mainly characterized by technology content
It is high, the lead time is short, development cost is low, can networking application., must a kind of satisfaction mark of design to adapt to the growth requirement of microsatellite
Standardization development, modularization assembling, mass production, the microsatellite information processing system of rapid application.
The content of the invention
An object of the present invention is to propose a kind of microsatellite information processing system, and the internal system is carried based on direct current
The mode of wave communication, can solve the problem that the following defect that existing microsatellite information processing system is present：Communication interface disunity,
It is nonstandard, cause the electric room on satellite to there is the risk interfered, be unfavorable for signal transmission compatible design；Data are led to
Believe line diversity, be unfavorable for fast integration test；Communication interface annexation is complicated, is unfavorable for fault location；Data telecommunication line
Species is more, connection complicated and severe influences the R＆D capability of microsatellite standardization, modularization and mass.
The technical scheme of microsatellite information processing system proposed by the present invention is as follows：
A kind of microsatellite information processing system, including Star Service control management module, power supply and thermal control module, observing and controlling base band
Module, navigation positioning module sum pass in baseband module, each module and are embedded with a direct current carrier communication unit, and each mould
Block is connected on dc source communication bus, to realize that the information between each module is handed over by the dc source communication bus
Mutually.
The above- mentioned information processing system that the present invention is provided, by the embedded direct current carrier communication unit in each module of system,
And the information exchange of internal system is realized based on dc source communication bus, not only make it that the communication interface in system is unified, carry
The standardization of electronic equipment, modularization on high star, the complexity of reduction satellite cable net design, also as direct current carrier communication has
There is stronger antijamming capability, improve the reliability of information processing system, meet standardization development, modularization assembling, batch
Metaplasia production, the microsatellite development trend of rapid application.
In preferred scheme, each module includes a host computer, and in each module, direct current carrier communication unit passes through
UART communicates with the host computer in module；
The direct current carrier communication unit includes direct current carrier chip, transistor amplifier, bandwidth-limited circuit, high frequency
Couple magnet ring circuit, switch driving circuit, switch Acquisition Circuit and photoelectric coupling circuit；Wherein：Photoelectric coupling circuit is connected to
Between host computer in direct current carrier chip and module, for by the host computer in direct current carrier communication unit and module carry out every
From, prevent when host computer from powering off train of signal electricity；Switch driving circuit is connected to the I/O pin of direct current carrier chip, for receiving
The powered on and off signal of direct current carrier chip output, and according to height time controllable conduction level, realize and the switch is driven
The powered on and off control of dynamic circuit said module；Switch Acquisition Circuit is used for the powered on and off state for gathering its said module
And feed back to direct current carrier chip；The input and output end of transistor amplifier are respectively connecting to direct current carrier chip, height
Frequency coupling magnet ring circuit；The input and output end of bandwidth-limited circuit are respectively connecting to high-frequency coupling magnet ring circuit, direct current and carried
Ripple chip；Direct current carrier communication unit is connected on dc source communication bus by high-frequency coupling magnet ring circuit；
When the host computer in direct current carrier communication unit slave module receives data signal, data signal is through photoelectric coupling electricity
Road enters direct current carrier chip, and the digital signal modulated is high frequency analog signals by OFDM technology by direct current carrier chip, and
Output to transistor amplifier is amplified, and is then coupled to the dc source communication bus by high-frequency coupling magnet ring circuit
On；
When direct current carrier communication unit receives high frequency analog signals from the dc source communication bus, frequency analog letter
Number it is filtered through high-frequency coupling magnet ring circuit into bandwidth-limited circuit, filtered high frequency analog signals enter direct current carrier
Chip is demodulated, and is converted to after data signal the host computer being sent to by UART in module；If direct current carrier communication unit connects
The direct switch order of remote control is received, then the direct switch order of the remote control is decoded, and export to switch driving circuit.
The centralized management of satellite power supply is changed into distributed management by the present invention, each module host computer of information processing system
It is powered on and off to be controlled by corresponding direct current carrier communication unit, improve the modular water of microsatellite information processing system
It is flat.
In preferred scheme, the dc source communication bus is communicated using mutually redundant dual redundant dc source
Line；The dc source communication bus supply line as the microsatellite information processing system and communication line simultaneously.It is logical
The technical program is crossed, direct current supply line, order wire, direct instruction line, analog acquisition line, digital data acquisition line have been carried out whole
Close, form unified power source communications line and carry out information exchange, reduce the complexity of satellite cable net design.
The present invention separately also proposed a kind of communication means of microsatellite information processing system, wherein the microsatellite is believed
Ceasing processing system includes Star Service control management module, power supply and thermal control module, observing and controlling baseband module, navigation positioning module sum biography
A direct current carrier communication unit is embedded with baseband module, each module, and each module is connected to dc source communication bus
On, to realize the information exchange between each module by the dc source communication bus；Wherein, described information interaction includes distant
Survey data communication and telecommand communication；The communication means includes the telemetric data communication flow and telecommand performed successively
Communication process；
The telemetric data communication flow includes：Star Service controls management module as the main frame of telemetric data communication, passes through
Its direct current carrier communication unit sends telemetry polling order to other modules, and other modules are receiving the telemetry wheel
Ask after order, host computer of its respective direct current carrier communication unit into module obtains telemetry and Star Service control is given in response
Management module；Star Service control management module is transmitted after the telemetry of all module responses is received to observing and controlling base band mould
Block, ground satellite center is sent to by observing and controlling baseband module；
The telecommand communication process comprises the following steps S1~S4：
S1, observing and controlling baseband module receive the telecommand querying command that management module is controlled from Star Service, if being properly received
To telecommand querying command, then counter O reset and step S2 is performed；If failing to receive telecommand querying command, count
Number device adds 1 and performs step S3；Wherein described counter is to fail to receive telecommand inquiry for adding up observing and controlling baseband module
The number of times of order；
S2, judge whether observing and controlling baseband module receives the telecommand from ground satellite center, if so, then observing and controlling base band
Module sends effective telecommand and gives Star Service control management module, by Star Service control management module by effective telecommand send to
Corresponding module is performed；If it is not, then observing and controlling baseband module sends invalid remote control and instructed and gives Star Service control management module, this wheel is distant
Control command communication flow terminates；Wherein, the telecommand from ground satellite center includes remote-control data instruction and remote control is direct
Switch order；
S3, judge whether the aggregate-value of counter reaches threshold value set in advance, if so, then performing step S4；If it is not, then
This wheel telecommand communication process terminates；
S4, judge whether observing and controlling baseband module receives the direct switch order of remote control from ground satellite center, if so, then
The direct switch order of the remote control is sent to corresponding module and performed by observing and controlling baseband module；If it is not, then this wheel telecommand is led to
Letter flow journey terminates；
Wherein, the corresponding module in step S2 and step S4 is that index passes baseband module, navigation positioning module, power supply
With one of thermal control module, Star Service control management module.The above-mentioned communication means that the present invention is provided, the direct switch order of remote control
Transmission has both of which, pattern one：Star Service controls management module normal power-up pattern, and the direct switch order of remote control is through observing and controlling base band
After module is received, Star Service control management module is issued, the direct current carrier for controlling management module to be sent to corresponding module by Star Service is led to
Letter unit is performed；Pattern two：Star Service control management module is not powered on or during failure, and the direct switch order of remote control is through observing and controlling base
The direct current carrier communication unit that corresponding module is sent directly to after being received with module is performed.It this method solve and utilize data
Line is remotely controlled direct switch order transmission problem, improves the reliability of information processing system.
In preferred scheme, the telemetric data communication flow is specific as follows：Star Service control management module respectively to
Observing and controlling baseband module, power supply and thermal control module, navigation positioning module, number pass baseband module and send poll telemetry order, and
Monitor whether each module replys telemetry；If there is response, remote measurement valid data are filled, are formed comprising remote measurement valid data
Telemetry data packet；If unresponsive, remote measurement invalid data is filled, the telemetry data packet for including remote measurement invalid data is formed；Star Service
Control management module to obtain the telemetry data packet of all modules, and be packaged as whole star telemetry data packet to send to observing and controlling base band mould
Block, ground satellite center is sent to by observing and controlling baseband module by whole star telemetry data packet.
Brief description of the drawings
Fig. 1 is a kind of intercommunication framework for microsatellite information processing system that the specific embodiment of the invention is provided
Figure；
Fig. 2 is the schematic diagram of the direct current carrier communication unit of the microsatellite information processing system of the present invention；
Fig. 3 is the telemetric data communication flow chart of the microsatellite information processing system of the present invention；
Fig. 4 is the telecommand communication flow diagram of the microsatellite information processing system of the present invention.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings and preferred embodiment.
The embodiment of the present invention provides a kind of microsatellite information processing system (hereinafter referred to as information processing
System), the information processing system is the important component for constituting the whole star system of microsatellite, described in the whole star system
The periphery of information processing system is connected with following ancillary equipment：Observing and controlling radio-frequency module, number transmit frequency module, Attitude and orbit control
Equipment, battery and solar battery array, and payload.Wherein：The Attitude and orbit control equipment includes that star is quick, top
Spiral shell, magnetometer, flywheel, magnetic torquer and propeller etc.；The payload includes optical imagery load and electronic imaging load
Deng.
With reference to Fig. 1, described information processing system 100 include Star Service control management module 101, power supply and thermal control module 102,
Observing and controlling baseband module 103, the sum of navigation positioning module 104 pass baseband module 105, and a direct current carrier is embedded in each module
Communication unit DCPLCU, also, each module is connected in a direct current power source communications bus and (Fig. 1 referred to, particular by it
Direct current carrier communication cells D CPLCU be connected on dc source communication bus), can be real by the dc source communication bus
Information exchange between existing modules.Wherein：Star Service control management module 101 is responsible for the task management and scheduling of satellite, appearance
Communication and control algolithm of the state with orbits controlling equipment；Power supply is responsible for satellite battery and solar cell with thermal control module 102
Battle array management, Power convert and outgoing management and equipment computer heating control；Observing and controlling baseband module 103 is responsible for satellite telemetering data processing
Lower biography and telecommand reception processing；Navigation positioning module 104 is responsible for tracks positioned and the time service of satellite；Number passes baseband module
105 processing, storage, playback for being responsible for payload data are passed with.As shown in figure 1, each module include one it is corresponding on
Direct current carrier communication cells D CPLCU in position machine, each module can pass through UART (universal asynchronous receiving-transmitting transmitter) and its institute
Host computer in module is communicated.
With reference to Fig. 2, direct current carrier communication cells D CPLCU includes direct current carrier chip, and (model for example can be
BSC6825), transistor amplifier, bandwidth-limited circuit, high-frequency coupling magnet ring circuit, switch driving circuit, switch collection electricity
Road and photoelectric coupling circuit.As shown in Figure 2：
(host computer is in fig. 2 not for the host computer that photoelectric coupling circuit is connected in direct current carrier chip BSC6825 and module
Show) between, for direct current carrier communication unit to be isolated with the host computer in module, prevent letter when host computer is powered off
Number string electricity, when direct current carrier communication unit is communicated with the host computer in module, UART In are represented will be upper by UART
The data input of machine is to corresponding direct current carrier communication unit, and UART Out are represented direct current carrier communication unit by UART
Host computer in data output to module；
Switch driving circuit is connected to direct current carrier chip BSC6825 I/O pin, defeated for receiving direct current carrier chip
The powered on and off signal gone out, and according to height time controllable (control is in 160ms) conduction level, realize to the switch drive
The powered on and off control of circuit said module；Switch Acquisition Circuit is for gathering the powered on and off state of its said module simultaneously
Feed back to direct current carrier chip BSC6825；The input and output end of transistor amplifier are respectively connecting to direct current carrier core
Piece BSC6825, high-frequency coupling magnet ring circuit；The input and output end of bandwidth-limited circuit are respectively connecting to high-frequency coupling magnet ring
Circuit, direct current carrier chip BSC6825；Direct current carrier communication unit is connected to dc source by high-frequency coupling magnet ring circuit and led to
Believe in bus.
When the host computer in the direct current carrier communication unit slave module of a certain module receives data signal, data signal warp
Photoelectric coupling circuit enters direct current carrier chip, and the digital signal modulated is high frequency mould by OFDM technology by direct current carrier chip
Intend signal, and output to transistor amplifier is amplified, and is then coupled to the direct current by high-frequency coupling magnet ring circuit
In sources traffic bus.
When the direct current carrier communication unit of a certain module receives high frequency analog signals from the dc source communication bus,
High frequency analog signals are filtered through high-frequency coupling magnet ring circuit into bandwidth-limited circuit, and filtered high frequency analog signals are entered
Enter direct current carrier chip to be demodulated, be converted to after data signal the host computer being sent to by UART in module.
If direct current carrier communication unit receives the direct switch order of remote control, the direct switch order of the remote control is solved
Code, and export to switch driving circuit.
The dc source communication bus (uses x2 using mutually redundant dual redundant dc source order wire in such as Fig. 1
Represent two link redundancy backups)；The dc source communication bus is simultaneously as the supply lines of the microsatellite information processing system
Road and communication line.That is, the power supply and power management and conversion output equipment of the thermal control module as whole star system,
Being powered by the dc source communication bus to the modules of described information processing system, (i.e. dc source communication bus is
Supply line), specifically, there is dc source converting unit DC/DC, by the power supply of supply line through direct current in modules
Other parts (such as direct current carrier communication unit and upper in power conversion unit DC/DC treatment and supplieds module where it
Machine) use；Meanwhile, it is also to be communicated by the dc source that information exchange is carried out between described information processing system modules
Bus (i.e. dc source communication bus is communication line).
The embodiment of the present invention also discloses the communication means of aforementioned information processing system, described information processing system
Information exchange between each module of uniting includes telemetric data communication and telecommand communicates, and the communication means includes performing successively
Telemetric data communication flow and telecommand communication process, the communication means of the information processing system, be to first carry out remote measurement number
According to communication process, then telecommand communication process is performed, two communication processes have been performed as a cycle, the communication means cycle
Operate to property.
The telemetric data communication flow includes：Star Service controls management module as the main frame of telemetric data communication, passes through
Its direct current carrier communication unit sends telemetry polling order to other modules；Other modules are receiving the telemetry wheel
Ask after order, host computer of its respective direct current carrier communication unit into module obtains telemetry and Star Service control is given in response
Management module；Star Service control management module is transmitted after the telemetry of all module responses is received to observing and controlling base band mould
Block, ground satellite center is sent to by observing and controlling baseband module.
A kind of specific embodiment of telemetric data communication flow is as shown in figure 3, including following process step：By Star Service control
Management module starts telemetric data communication flow, and telemetry polling order, other four modules are sent to other four modules
After telemetry polling order is received, host computer of the respective direct current carrier communication unit into module obtains telemetry
And response controls management module to Star Service.Whether Star Service control management each module of module monitors has response telemetry, should if having
Answer, then Star Service control management module filling remote measurement valid data, what is included in the telemetry data packet of such a situation formation is remote measurement
Valid data；If unresponsive, Star Service control management module filling remote measurement invalid data, the telemetry data packet of such a situation formation
In include is remote measurement invalid data.Star Service controls management module by all modules of formation (also including Star Service control management mould
Block is in itself) telemetry data packet carry out being packaged into whole star telemetry data packet again, observing and controlling baseband module is subsequently sent to, by observing and controlling base
The whole star telemetry data packet is sent to ground satellite center by band module.So far complete one and take turns telemetric data communication.
The telecommand communication process, refers to Fig. 4, comprises the following steps S1~S4：
S1, observing and controlling baseband module receive the telecommand querying command that management module is controlled from Star Service, if being properly received
To telecommand querying command (explanation Star Service control management module is in normal power-up pattern), then counter O reset and step is performed
Rapid S2；If failing to receive telecommand querying command (explanation Star Service control management module may be not powered on or fault mode),
Then counter adds 1 and performs step S3；Wherein described counter is to fail to receive telecommand for adding up observing and controlling baseband module
The number of times of querying command；
S2, judge whether observing and controlling baseband module receives the telecommand from ground satellite center, if so, then observing and controlling base band
Module sends effective telecommand and gives Star Service control management module, by Star Service control management module by effective telecommand send to
Corresponding module is performed；If it is not, then observing and controlling baseband module sends invalid remote control and instructed and gives Star Service control management module, this wheel is distant
Control command communication flow terminates；Wherein, the telecommand from ground satellite center includes remote-control data instruction and remote control is direct
Switch order；
S3, judge whether the aggregate-value of counter reaches threshold value set in advance, if so, then performing step S4；If it is not, then
This wheel telecommand communication process terminates；
S4, judge whether observing and controlling baseband module receives the direct switch order of remote control from ground satellite center, if so, then
The direct switch order of the remote control is sent to corresponding module and performed by observing and controlling baseband module, is solved and is carried out using data wire
The problem of direct switch order of remote control is transmitted；If it is not, then this wheel telecommand communication process terminates；
Wherein, the corresponding module in step S2 and step S4 is that index passes baseband module, navigation positioning module, power supply
With one of thermal control module, Star Service control management module.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to assert
The specific implementation of the present invention is confined to these explanations.For those skilled in the art, do not taking off
On the premise of from present inventive concept, some equivalent substitutes or obvious modification can also be made, and performance or purposes are identical, all should
When being considered as belonging to protection scope of the present invention.
Claims (2)
1. a kind of communication means of microsatellite information processing system, it is characterised in that：The microsatellite information processing system
Baseband module is passed including Star Service control management module, power supply and thermal control module, observing and controlling baseband module, navigation positioning module sum,
A direct current carrier communication unit is embedded with each module, and each module is connected on dc source communication bus, to pass through
The dc source communication bus realizes the information exchange between each module；Wherein, described information interaction include telemetry lead to
Letter and telecommand communication；
The communication means includes telemetric data communication flow and the telecommand communication process performed successively；The telemetry
Communication process includes：Star Service controls management module as the main frame of telemetric data communication, is sent out by its direct current carrier communication unit
Telemetry polling order is sent to other modules；Other modules are after the telemetry polling order is received, and its is respective straight
Host computer of the stream carrier communication unit into module obtains telemetry and response controls management module to Star Service；Star Service control pipe
Reason module is transmitted to observing and controlling baseband module after the telemetry of all module responses is received, and is sent by observing and controlling baseband module
To ground satellite center；
The telecommand communication process comprises the following steps S1~S4：S1, observing and controlling baseband module, which are received, comes from Star Service control pipe
The telecommand querying command of module is managed, if success
Telecommand querying command is received, then counter O reset and performs step S2；If failing to receive telecommand inquiry
Order, then counter adds 1 and performs step S3；Wherein described counter is to fail to receive remote control for adding up observing and controlling baseband module
The number of times of instructions query order；
S2, judge whether observing and controlling baseband module receives the telecommand from ground satellite center, if so, then observing and controlling baseband module
Send effective telecommand and control management module to Star Service, sent effective telecommand to corresponding by Star Service control management module
Module is performed；If it is not, then observing and controlling baseband module send invalid remote control instruct give Star Service control management module, this wheel remote control refer to
Communication process is made to terminate；Wherein, the telecommand from ground satellite center includes remote-control data instruction and remote control is directly switched
Instruction；
S3, judge whether the aggregate-value of counter reaches threshold value set in advance, if so, then performing step S4；If it is not, then this takes turns
Telecommand communication process terminates；
S4, judge whether observing and controlling baseband module receives the direct switch order of remote control from ground satellite center, if so, then observing and controlling
The direct switch order of the remote control is sent to corresponding module and performed by baseband module；If it is not, then this takes turns telecommand communication stream
Journey terminates；
Wherein, the corresponding module in step S2 and step S4 is that index passes baseband module, navigation positioning module, power supply and heat
Control one of module, Star Service control management module.
2. the communication means of microsatellite information processing system as claimed in claim 1, it is characterised in that：
The telemetric data communication flow is specific as follows：Star Service control management module is respectively to observing and controlling baseband module, power supply and heat
Control module, navigation positioning module,
Number passes baseband module and sends poll telemetry order, and monitors whether each module replys telemetry；If there is response,
Remote measurement valid data are filled, the telemetry data packet for including remote measurement valid data is formed；If unresponsive, remote measurement invalid number is filled
According to formation includes the telemetry data packet of remote measurement invalid data；Star Service control management module obtains the telemetry data packet of all modules,
And it is packaged as whole star telemetry data packet hair
Observing and controlling baseband module is delivered to, whole star telemetry data packet is sent to ground satellite center by observing and controlling baseband module.
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| CN108111192A (en) * | 2017-12-29 | 2018-06-01 | 北京航天飞腾装备技术有限责任公司 | A kind of carrier communication electronic system based on missile power supply line |
| JP7130776B2 (en) * | 2018-05-04 | 2022-09-05 | ザ・ボーイング・カンパニー | Hosted payload operations |
| CN112578720B (en) * | 2019-09-27 | 2022-02-25 | 陕西星邑空间技术有限公司 | Equipment monitoring method, system and device |
| CN113364489B (en) * | 2019-12-06 | 2022-07-29 | 长沙天仪空间科技研究院有限公司 | Communication transmitting device and receiving device based on direct current power supply line |
| CN113242166B (en) * | 2021-04-01 | 2023-07-14 | Oppo广东移动通信有限公司 | Bus communication system, electronic device, and bus communication method |
| CN113556146B (en) * | 2021-07-22 | 2022-07-05 | 北京微纳星空科技有限公司 | Measurement and control transponder and measurement and control response system loaded on controlled satellite |
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