CN118012678A - Satellite-borne multi-comprehensive flattened electronic system architecture and design method and medium thereof - Google Patents
Satellite-borne multi-comprehensive flattened electronic system architecture and design method and medium thereof Download PDFInfo
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Abstract
The invention provides a satellite-borne multi-comprehensive flattened electronic system architecture, a design method and a medium thereof, and relates to a small satellite-borne comprehensive electronic system architecture. The invention takes the SOC as a processing core, a software radio IP core is embedded in the SOC, and the functions of star management, measurement and control, data transmission, power supply, storage, navigation, short message communication, thermal control, intelligent calculation and the like are integrated; the invention has A, B double machines which are mutually backed up inside, adopts Wen Bei scheme of measuring and controlling double receipts, and determines the state of A, B machine by the on-duty machine marking device; the A, B machine of the invention is provided with a state monitoring device for monitoring the health state of the SOC, and can realize the functions of resetting, loading, reading back, refreshing, cutting and the like of the SOC. The beneficial effects of the invention are as follows: breaks through the design of heterogeneous computing fault-tolerant system architecture, and supports the intelligent and networking requirements of satellites with high performance, multiple synthesis, small volume and low power consumption.
Description
Technical Field
The invention relates to satellites, in particular to a satellite-borne multi-comprehensive flattened electronic system architecture, a design method and a medium thereof.
Background
The satellite-borne multi-comprehensive flattened electronic system is a control management center of a satellite and is responsible for the functions of satellite management, attitude and orbit control calculation and management, power supply control and management, thermal control management, data processing and transmission, intelligent calculation and storage, high-speed data transmission, satellite-ground communication and the like of the satellite so as to realize safe and reliable operation of the satellite. Therefore, the stability and reliability of the satellite-borne integrated electronics are related to the service life of the whole satellite and the execution degree of the task.
The traditional satellite-borne comprehensive electronic device has the advantages that each functional module is an independent single machine, and is internally provided with a processor chip and a power management chip, and the functional modules are connected together through an internal connector and stacked into the comprehensive electronic device in a wood stacking mode, so that the power consumption is high, the resource waste is high, the size is large and the cost is high. With the development of technology, the satellite and rocket technologies are continuously improved, one rocket with multiple satellites is launched, and a constellation is formed by networking of multiple satellites. This puts higher demands on inter-satellite communication, satellite-to-ground communication, one-arrow-multiple-satellite technology, computing processing power, memory power.
Therefore, the technical problem to be solved by the person skilled in the art is to break through the design of heterogeneous computing fault-tolerant system architecture, and support the satellite intellectualization with high performance, multiple synthesis, small volume and low power consumption.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a satellite-borne multi-integrated flattened electronic system architecture, a design method and a medium thereof.
The invention provides a satellite-borne multi-comprehensive flat electronic system architecture which comprises an A machine and a B machine which are mutually backed up, wherein the A machine and the B machine are in input-output bidirectional connection.
As a further improvement of the invention, a measurement and control dual-receiving scheme is adopted, both the machine A and the machine B can receive ground remote control instructions, both the machine A and the machine B can execute direct instructions, the reliability of the system is improved, the single machine of the machine A and the machine B takes the SOC as a processing core, a software radio IP core is embedded in the machine A, the functions of star management, measurement and control, data transmission, power supply, storage, navigation, short message communication, thermal control and intelligent computing circuits are integrated, the machine A and the machine B can execute all tasks, the machine B can only execute measurement and control and receiving tasks, the machine A and the machine B are provided with state monitoring devices for monitoring the health state of the SOC, and the functions of resetting, loading, reading back, refreshing and cutting of the SOC can be realized.
As a further improvement of the invention, the satellite-borne multi-comprehensive flattened electronic system architecture further comprises a shift marker device, wherein the shift marker device is respectively connected with the A machine and the B machine in an input-output bidirectional manner, and the shift marker device determines the states of the A machine and the B machine.
As a further improvement of the invention, the machine A and the machine B are respectively provided with an SOC chip and a state monitoring device, and the state monitoring devices are used for monitoring the health state of the SOC chip and can realize resetting, loading, readback, refreshing and cutting of the SOC.
As a further improvement of the invention, the A machine and the B machine are respectively provided with an intermediate frequency receiving and transmitting channel and a radio frequency receiving and transmitting channel, the intermediate frequency receiving and transmitting channel is in input and output bidirectional connection with the SOC chip, the intermediate frequency receiving and transmitting channel is in input and output bidirectional connection with the radio frequency receiving and transmitting channel, and the radio frequency receiving and transmitting channel is connected with an input antenna and an output antenna
Wherein,
The medium-frequency receiving and transmitting channel is provided with a medium-frequency receiving and transmitting channel,
Receiving channel: the method has the advantages of measuring and controlling data transmission receiving intermediate frequency ADC sampling,
The transmission channel: the device is provided with a measurement and control data transmission transmitting intermediate frequency DAC and is modulated and output;
The radio frequency transceiver channel is provided with a radio frequency transceiver channel,
Receiving channel: after receiving the signal from the antenna network through the input antenna, the signal is subjected to input filtering, low noise amplification and down-conversion to a receiving intermediate frequency signal with fixed frequency,
The transmission channel: up-converting the transmitting intermediate frequency signal into a radio frequency signal with fixed frequency, amplifying the power, filtering the output, and transmitting the signal through an output antenna.
As a further improvement of the invention, the internal logic part of the SOC chip is embedded with a software radio IP core, and can receive and process the remote control information from the medium frequency receiving and transmitting the remote measurement information sent by the star service to the medium frequency receiving and transmitting channel.
As a further improvement of the invention, the machine A and the machine B are both provided with a power management module, so that the split-flow regulation of the solar cell array and the charge and discharge control of the storage battery pack can be realized, and the single storage battery is sampled and balanced; the primary power source is converted to a secondary power source that meets power and quality requirements.
As a further improvement of the invention, the power management module comprises a storage battery management module, a primary power supply power regulation module and a secondary power supply conversion module, the satellite-borne multi-comprehensive flattened electronic system architecture further comprises a storage battery pack and a solar cell array, the output end of the storage battery pack is respectively connected with the storage battery management module of the machine A and the storage battery management module of the machine B, the output end of the solar cell array is respectively connected with the primary power supply power regulation module of the machine A and the primary power supply power regulation module of the machine B, the storage battery management module and the primary power supply power regulation module are respectively connected with the secondary power supply conversion module, and the secondary power supply conversion module is connected with the SOC chip.
As a further improvement of the invention, the configuration of the machine A and the configuration of the machine B are identical.
The invention also provides a design method of the satellite-borne multi-comprehensive flattened electronic system architecture, which comprises the following steps of:
and determining one of the A machine and the B machine as the on-duty machine and the other as the standby machine by the on-duty machine marking device, wherein when the on-duty machine works in a full state mode, the standby machine works in a minimum system mode.
As a further improvement of the invention, the same mark is provided for the machine A and the machine B through the machine on duty mark device, and the machine A is the machine on duty and the machine B is Wen Beiji when the machine on duty mark is at a high level; when the class machine mark is at a low level, the class machine B is the class machine, and the class machine A is the warm standby machine.
As a further improvement of the invention, the star software is divided into a full-state program and a minimum system program, and according to the change of the on-duty machine mark, if the on-duty machine mark is changed from a high level to a low level, the A machine loads the minimum system program, and the B machine loads the full-state program, so that the on-duty machine is changed from the A machine to the B machine; if the on-duty machine mark changes from low level to high level, the A machine can load the full state program, and the B machine can load the minimum system program, so that the on-duty machine is changed from the B machine to the A machine.
As a further improvement of the invention, the data of the A machine and the B machine are recovered by adopting a cross backup mode, the data of the A machine and the B machine are recovered from the own memory preferentially, and the data are recovered from the other memory only when the abnormality occurs.
As a further improvement of the invention, when both the airliner and the Wen Bei are capable of receiving the direct instructions and/or the indirect instructions on the ground, the on-duty machine mark is changed, and the switching between the on-duty machine and the warm-standby machine is realized.
As a further improvement of the invention, the working state of the SOC chip is monitored by the state monitoring device, if the watchdog is abnormal or the data transmission is abnormal, the SOC chip is reset, the software of the SOC chip can be refreshed at fixed time, and the program for updating the SOC chip from the ground through uploading is supported.
As a further improvement of the invention, after the SOCs of the A machine and the B machine are reset each time, the on-duty machine mark is detected, and if the on-duty machine mark is at a high level, the SOC chip of the A machine loads full state software, and the SOC chip of the B machine loads minimum system software; if the on-duty machine flag is low, the SOC chip of the B machine loads the full state software, and the SOC chip of the A machine loads the minimum system software.
As a further improvement of the invention, the full state program and the minimum system program are respectively stored in the machine A and the machine B for four times, the SOC chip is loaded from the next program each time of resetting, the state monitoring device counts the resetting times, and after the resetting times reach four times, the state monitoring device changes the on-duty machine mark so as to realize the switching of the on-duty machine.
As a further improvement of the invention, the internal logic part of the SOC chip is embedded with a software radio IP core, receives, stores and processes remote control information from the intermediate frequency receiving and transmitting channel, and transmits remote measurement information sent by the star service to the intermediate frequency receiving and transmitting channel.
As a further improvement of the invention, the radio frequency receiving and transmitting channel, the receiving channel receives the signal from the antenna network, then filters, amplifies with low noise, down-converts the signal into the receiving intermediate frequency signal with fixed frequency, the transmitting channel up-converts the transmitting intermediate frequency signal into the radio frequency signal with fixed frequency, and then transmits the signal from the antenna after power amplification and filtering.
As a further improvement of the invention, the comprehensive electronics transmits the telemetry data to the software radio IP of the SOC chip for recording, playback, framing, scrambling, encoding and modulation, the data is transmitted to the transmitting channel of the radio frequency receiving and transmitting channel after DAC conversion and modulation by the intermediate frequency receiving and transmitting channel, the transmitting channel of the radio frequency receiving and transmitting channel carries out up-conversion, power amplification and output filtering, the downlink modulation signal is transmitted to the comprehensive electronic data transmission antenna, after the power amplification by the comprehensive electronic data transmission antenna, the data is output in a pointing way by the comprehensive electronic data transmission antenna, and a satellite-to-ground unidirectional transmission link is established jointly with the ground data transmission station, thus completing the task of transmitting the ground wireless data.
As a further improvement of the invention, the power management realizes the shunt regulation of the solar cell array and the charge and discharge control of the storage battery pack, and the sampling and balance control of the storage battery cells; the primary power source is converted to a secondary power source that meets power and quality requirements.
As a further improvement of the invention, the storage battery management module, the primary power supply power regulation module and the secondary power supply conversion module all have backup circuits.
As a further improvement of the invention, the star management comprises a remote control task, a remote control instruction and injection data are transmitted to the SOC chip through an uplink channel, the SOC chip demodulates and checks the data, processes the data after the data are checked correctly, the SOC chip directly executes the direct instruction, and the SOC chip checks the indirect instruction and the injection data block and then recognizes and executes the indirect instruction and the injection data block according to the packet of the instruction or the data block.
As a further improvement of the invention, the star management comprises data acquisition and telemetering data transmission, wherein the acquired telemetering data comprises telemetering data of each lower computer, control component data, temperature information and load data; telemetry data is sent to the surface via the satellite-to-ground link.
As a further improvement of the invention, the star management also comprises a program control function, a time management function, an autonomous safety management function, an autonomous task management function, an important data management function, an on-orbit software modification and uploading function, a posture sensor data acquisition function, a posture control executing mechanism data acquisition and control function and a control software algorithm processing function.
The invention also provides a readable storage medium having stored therein execution instructions which when executed by a processor are to implement the method
The beneficial effects of the invention are as follows: by the scheme, the problem that the small satellite-borne comprehensive electronic has high integration level, high performance, high reliability, low power consumption, small volume and low cost is difficult to be compatible is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other solutions may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a satellite-borne multi-integrated flattened electronic system architecture in accordance with the present invention.
FIG. 2 is a schematic diagram of the shift register conversion
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention is further described with reference to the following description of the drawings and detailed description.
As shown in fig. 1 and 2, the satellite-borne multi-synthesis flattened electronic system architecture comprises an a machine and a B machine which are mutually backup, wherein the a machine and the B machine are in input-output bidirectional connection.
By adopting the scheme of measurement and control dual-reception, the machine A and the machine B can both receive ground remote control instructions and can both execute direct instructions, the reliability of the system is improved, the single machines of the machine A and the machine B take the SOC as a processing core, the software radio IP core is embedded in the machine A, the functions of star management, measurement and control, data transmission, power supply, storage, navigation, short message communication, thermal control and intelligent computing circuits are integrated, the machine A and the machine B can only execute measurement and control receiving tasks, the machine A and the machine B are provided with state monitoring devices, the health state of the SOC is monitored, and the functions of resetting, loading, reading back, refreshing and cutting of the SOC can be realized.
The satellite-borne multi-integrated flattened electronic system architecture further comprises an on-duty machine marking device, wherein the on-duty machine marking device is respectively connected with the A machine and the B machine in an input-output bidirectional manner, and the on-duty machine marking device determines the states of the A machine and the B machine.
And the machine A and the machine B are respectively provided with an SOC (system-on-a-chip) chip and a state monitoring device, and the state monitoring devices are used for monitoring the health state of the SOC chip and can realize resetting, loading, readback, refreshing and cutting of the SOC.
The A machine and the B machine are respectively provided with an intermediate frequency receiving and transmitting channel and a radio frequency receiving and transmitting channel, the intermediate frequency receiving and transmitting channel is in input and output bidirectional connection with the SOC chip, the intermediate frequency receiving and transmitting channel is in input and output bidirectional connection with the radio frequency receiving and transmitting channel, and the radio frequency receiving and transmitting channel is connected with an input antenna and an output antenna
Wherein,
The medium-frequency receiving and transmitting channel is provided with a medium-frequency receiving and transmitting channel,
Receiving channel: the method has the advantages of measuring and controlling data transmission receiving intermediate frequency ADC sampling,
The transmission channel: the device is provided with a measurement and control data transmission transmitting intermediate frequency DAC and is modulated and output;
The radio frequency transceiver channel is provided with a radio frequency transceiver channel,
Receiving channel: after receiving the signal from the antenna network through the input antenna, the signal is subjected to input filtering, low noise amplification and down-conversion to a receiving intermediate frequency signal with fixed frequency,
The transmission channel: up-converting the transmitting intermediate frequency signal into a radio frequency signal with fixed frequency, amplifying the power, filtering the output, and transmitting the signal through an output antenna.
The software radio IP core is embedded in the internal logic part of the SOC chip, and can receive and process remote control information from the intermediate frequency receiving and transmitting channel and transmit remote measurement information sent by the star service to the intermediate frequency receiving and transmitting channel.
The machine A and the machine B are both provided with power management modules, so that the shunt regulation of the solar cell array and the charge and discharge control of the storage battery pack can be realized, and the single storage battery is sampled and balanced; the primary power source is converted to a secondary power source that meets power and quality requirements.
The power management module comprises a storage battery management module, a primary power supply power regulation module and a secondary power supply conversion module, the satellite-borne multi-integrated flattened electronic system architecture further comprises a storage battery pack and a solar cell array, the output end of the storage battery pack is respectively connected with the storage battery management module of the machine A and the storage battery management module of the machine B, the output end of the solar cell array is respectively connected with the primary power supply power regulation module of the machine A and the primary power supply power regulation module of the machine B, the storage battery management module and the primary power supply power regulation module are respectively connected with the secondary power supply conversion module, and the secondary power supply conversion module is connected with the SOC chip.
The configuration of the machine A and the configuration of the machine B are identical.
In order to improve reliability, A, B double machines which are mutually backed up are designed in a redundancy way; A. the configuration of the IO port of the SOC of the B machine is identical, and meanwhile, in order to ensure the performance consistency of the A, B machine, the schematic diagram and the PCB design of the interface circuit and the peripheral circuit are kept consistent.
Dividing the whole star structure, facing the external connector, wherein the left side is the machine A, and the right side is the machine B; electrically, the GPIO1 is at a high level, and the GPIO1 is at a low level, and the GPIO1 is at a B level.
The invention provides a satellite-borne multi-comprehensive flattened electronic system architecture, which takes an SOC as a processing core, wherein a software radio IP core is embedded in the SOC, and functions of satellite management, measurement and control, data transmission, power supply, storage, navigation, short message communication, thermal control, intelligent calculation and the like are integrated; the interior of the machine is provided with A, B machines which are mutually backed up, a Wen Bei scheme for measuring and controlling the double receipts is adopted, and the state of the A, B machine is determined by a shift machine marking device; A. the machine B is provided with a state monitoring device for monitoring the health state of the SOC and can realize the functions of resetting, loading, refreshing, cutting and the like of the SOC; the flat design is adopted, and the functions are integrated and designed on one PCB, so that the testing, the experiment and the whole star design are convenient.
The satellite-borne multi-comprehensive flat electronic system architecture provided by the invention integrates the functions of satellite management, measurement and control, data transmission, power supply, storage, navigation, short message communication, thermal control, intelligent calculation and the like on one PCB board, so that the whole satellite structure design is more convenient. The flat satellites are installed in the rocket launching bin in a building block stacking mode, so that more satellites can be installed in a limited space, and the rocket launching bin is convenient for launching one rocket with multiple satellites.
A design method of a satellite-borne multi-integrated flattened electronic system architecture is characterized in that one of an A machine and a B machine is determined to be a shift machine by a shift machine marking device, and the other is a standby machine, wherein when the shift machine works in a full-state mode, the standby machine works in a minimum system mode.
Preferably, the SOC internal logic is embedded with a software radio IP core, receives and processes remote control information from the intermediate frequency transceiver channel, and transmits telemetry information sent by the star service to the intermediate frequency transceiver channel.
Preferably, the intermediate frequency receiving and transmitting channel is provided with a measurement and control data transmission receiving intermediate frequency ADC sampling and measurement and control data transmission transmitting intermediate frequency DAC modulation output.
Preferably, the radio frequency transceiver channel receives the signal from the antenna network, then filters, amplifies with low noise, down-converts the signal into a receiving intermediate frequency signal with fixed frequency, and the transmitting channel up-converts the transmitting intermediate frequency signal into a radio frequency signal with fixed frequency, amplifies with power, filters and then transmits the signal from the antenna.
Preferentially, the power management realizes the shunt regulation of the solar cell array and the charge and discharge control of the storage battery pack, and the sampling and balance control of the storage battery cells; the primary power supply is converted into a secondary power supply meeting the power and quality requirements, and power supply of each module, the control part, cast off, the antenna unfolding mechanism and the like is completed.
Preferably, the on-duty machine marking device is a reliable and stable device, and provides the same marking for A, B double machines, and the A machine and the B machine determine on-duty or warm standby according to the on-duty machine marking. When the airliner runs the full-state program, the warm standby runs the minimum system state. When the airlines and Wen Bei are both capable of receiving the direct instructions on the ground, the on-duty machine mark is changed, the switching between the on-duty machine and the warm-standby machine is realized, and the robustness of the system is improved.
Preferably, the state monitoring device is a reliable monitoring device for monitoring the working state of the SOC, resetting the SOC if the watchdog is abnormal or the data transmission is abnormal, and enabling the timing refresh of part of software in the SOC. While supporting a program of updating the SOC by uploading from the ground.
Preferably, A, B machines are operated in warm standby mode, and when the airliner is operated in full mode, the standby machine is operated in minimum system mode. The main machine and the standby machine have measurement and control receiving functions and can receive and execute ground direct instructions.
Preferentially, the on-duty machine marking device is a reliable and stable device, ensures that only one machine of the A, B machines is on the on-duty machine, does not have A, B machine robbery problem, and improves the reliability of the system.
Preferentially, the on-duty machine marking device provides the same mark for A, B double machines, the on-duty machine marking is high level, the A machine is on duty, and the B machine Wen Bei; the on-duty machine mark is low level, the on-duty machine B is on duty, and the on-duty machine A Wen Bei;
preferentially, the star software is divided into a full-state program and a minimum system program, and if the identity of the on-duty machine changes from a high level to a low level according to the change of the identity of the on-duty machine, the A machine loads the minimum system program, and the B machine loads the full-state program, so that the on-duty machine changes from the A machine to the B machine; if the on-duty machine identification is changed from low level to high level, the A machine can load the full state program, and the B machine can load the minimum system program, so that the on-duty machine is changed from the B machine to the A machine.
Preferably, the on-duty machine and the Wen Bei machine can receive the direct instruction and the indirect instruction on the ground to change the mark of the on-duty machine, so that the switching between the on-duty machine and the warm-standby machine is realized.
Preferentially, the important data of A, B machines adopts a cross backup mode, the communication mode is RS422 and a CAN bus, the important data of A machines are backed up in the memories of A machines and B machines, and the important data of B machines are backed up in the memories of A machines and B machines.
Preferably, the A, B machine's important data is recovered, preferably from its own memory, and only when an exception occurs, the data is fetched from the other memory.
Preferably, the state monitoring device is a reliable monitoring device for monitoring the working state of the SOC, resetting the SOC if a watchdog is abnormal or data transmission is abnormal, and timing refreshing of part of software in the SOC can be performed while supporting a program for updating the SOC from the ground by uploading.
Preferentially, after the SOC of A, B machines is reset each time, the on-duty machine mark is detected first, if the on-duty machine mark is at a high level, the A machine SOC loads full state software, and the B machine SOC loads minimum system software; if the on-duty machine mark is at a low level, loading full-state software by the B machine SOC, and loading minimum system software by the A machine SOC;
Preferably, the full state program and the minimum system program are respectively stored in A, B machines for four times, each time the program is reset, the SOC is loaded from the next program, the state monitoring device counts the reset times, and after the reset times reach four times, the state monitoring device changes the on-duty machine mark so as to realize the switching of the on-duty machine.
Preferably, the SOC internal logic part is embedded with a software radio IP core, receives, stores and processes remote control information from the intermediate frequency channel, and transmits the remote control information sent by the star service to the intermediate frequency channel;
Preferentially, the intermediate frequency receiving and transmitting channel is provided with a measurement and control data transmission receiving intermediate frequency ADC sampling, a measurement and control data transmission transmitting intermediate frequency DAC modulation output, and the intermediate frequency is adjustable so as to be adapted to the radio frequency circuit;
preferably, the radio frequency transceiver channel receives the signal from the antenna network, then filters, amplifies with low noise, down-converts the signal into a receiving intermediate frequency signal with fixed frequency, and the transmitting channel up-converts the transmitting intermediate frequency signal into a radio frequency signal with fixed frequency, amplifies with power, filters and then transmits the signal from the antenna.
Preferably, the integrated electronics transmit telemetry data to a software radio IP of the SOC chip, perform baseband signal processing such as recording, playback, framing, scrambling, encoding, modulation and the like, transmit the telemetry data to a radio frequency transmitting channel after being converted by an intermediate frequency DAC, perform up-conversion, filtering and the like on the radio frequency transmitting channel, transmit downlink modulation signals to a data transmission antenna, and after the power of the data transmission antenna is amplified, the data transmission antenna is pointed and output by the antenna, and jointly establish a satellite-to-ground unidirectional transmission link with a ground data transmission station to complete a ground wireless data transmission task.
Preferentially, the power management realizes the shunt regulation of the solar cell array and the charge and discharge control of the storage battery pack, and the sampling and balance control of the storage battery cells; the primary power supply is converted into a secondary power supply meeting the power and quality requirements, and power supply of each module, the control part, cast off, the antenna unfolding mechanism and the like is completed.
Preferably, the storage battery management, the primary power supply power adjustment and the secondary power supply conversion are all provided with backup circuits, so that the reliability of the system is improved.
Preferably, the star management comprises a remote control task, a remote control instruction and injection data are transmitted to the integrated electronic SOC through an uplink channel, the integrated electronic SOC demodulates and checks the data, and the data are processed after the data are checked to be correct. For direct instruction, the integrated electronic SOC executes directly. For indirect instructions and injection data, the integrated electronic SOC firstly checks the indirect instructions and the injection data blocks, and then performs corresponding operations according to packet identification of the instructions or the data blocks.
The star management also includes data acquisition and telemetry data transmission. The telemetry data collected by the comprehensive electronics comprises telemetry data of each lower computer, control component data, temperature information, load data and the like; the integrated electronics transmit telemetry data to the surface via the satellite-to-ground link.
The star management also comprises a program control function, a time management function, an autonomous safety management function, an autonomous task management function, an important data management function, an on-orbit software modification and uploading function, a posture sensor data acquisition function, a posture control executing mechanism data acquisition and control function, a control software algorithm processing function and the like.
Preferably, the storage comprises a low-speed memory NANDFLASH, is based on a triple-modular redundancy design, and is added with a bad block management function and an ECC (error correction and detection) function, so that the reliability of the low-speed storage is improved.
Preferably, the storage further comprises a large-capacity high-speed memory Msata module, and a plurality of Msata modules are designed in parallel, so that the fault tolerance of the system is improved. Msata receives big data from the load, and can also play back to the intelligent computing unit, and receives and stores the processed data returned by the intelligent computing unit.
Msata has file system management function, bad block management function, ECC error correction and detection function, power-off protection function and intelligent destruction function.
Preferentially, in order to improve the effectiveness of downloading the load data, intelligent calculation is completed on track. The method comprises the steps of supporting on-orbit geometric correction, internally arranging a plurality of AI target detection algorithms, carrying out intelligent specific target detection based on SAR image data generated by an imaging algorithm, supporting intelligent detection of different targets such as ships, planes and the like, and realizing target detection in different scenes through instruction control on the on-orbit. The detected target support is downloaded in various forms such as slices or key targets (target coordinates, types and the like).
Preferably, the navigation function consists of a baseband processing unit, a receiving pre-amplifying unit, a cavity filter and a receiving antenna.
Preferably, the Beidou transmitting function consists of a baseband processing unit, a transmitting pre-amplifying unit, a cavity filter and a transmitting antenna.
Preferably, the navigation module has an RNSS navigation function, realizes accurate positioning, orbit determination and accurate time synchronization of satellite positions, provides GPS/BDS positioning data and UTC time for the platform, and outputs original measurement data to the platform for ground post-hoc accurate orbit determination.
There are three navigation positioning modes: GPS, BDS joint location mode (defaults), 2.BDS single system single frequency location mode, 3.GPS single system location mode.
Preferably, the integrated electronics have a high-precision temperature acquisition function, can acquire temperature information of the satellite equipment and the structure, and perform closed-loop and open-loop temperature control of the heater according to the temperature control requirements of the satellite equipment and the structure. The thermal management adopts a double-machine cold standby management mode.
Preferably, the flat integrated electronic system is designed integrally with heat dissipation, shielding, reinforcement, etc. during the whole star design process.
The invention provides a satellite-borne multi-comprehensive flattened electronic system architecture, a design method and a medium thereof, and relates to a small satellite-borne comprehensive electronic system architecture. The method solves the problem that the satellite-borne comprehensive electrons of the small satellites are difficult to be compatible with low power consumption, small volume and low cost, and have high integration level, high performance and high reliability. The invention takes the SOC as a processing core, a software radio IP core is embedded in the SOC, and the functions of star management, measurement and control, data transmission, power supply, storage, navigation, short message communication, thermal control, intelligent calculation and the like are integrated; the invention has A, B double machines which are mutually backed up inside, adopts Wen Bei scheme of measuring and controlling double receipts, and determines the state of A, B machine by the on-duty machine marking device; the A, B machine of the invention is provided with a state monitoring device for monitoring the health state of the SOC, and can realize the functions of resetting, loading, refreshing, cutting and the like of the SOC.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (10)
1. The utility model provides a satellite-borne multi-synthesis flattening electronic system framework which characterized in that: the system comprises a satellite-borne multi-integrated flat electronic system architecture, wherein the satellite-borne multi-integrated flat electronic system architecture comprises an A machine and a B machine which are mutually backed up, the A machine and the B machine are in input and output bidirectional connection, a measurement and control double-receiving scheme is adopted, the A machine and the B machine can both receive ground remote control instructions and can both execute direct instructions, the reliability of the system is improved, an SOC (system on chip) is used as a processing core in the single machine of the A machine and the B machine, a software radio IP (Internet protocol) core is embedded in the single machine of the A machine and the B machine, functions of satellite management, measurement and control, data transmission, power supply, storage, navigation, short message communication, thermal control and intelligent computing circuit are integrated, the on-duty machine can execute all tasks, the temperature standby machine can only execute measurement and control and receiving tasks, the A machine and the B machine are provided with state monitoring devices for monitoring the health state of the SOC, and the functions of resetting, loading, reading back, refreshing and switching of the SOC can be realized.
2. The on-board multi-synthesis flattened electronic system architecture of claim 1, wherein: and the machine A and the machine B are respectively provided with an SOC chip and a state monitoring device, and the state monitoring devices are used for monitoring the health state of the SOC chips and can realize reset, loading, readback, refreshing and cutting of the SOC.
3. The on-board multi-synthesis flattened electronic system architecture of claim 2, wherein: the A machine and the B machine are respectively provided with an intermediate frequency receiving and transmitting channel and a radio frequency receiving and transmitting channel, the intermediate frequency receiving and transmitting channel is in input and output bidirectional connection with the SOC chip, the intermediate frequency receiving and transmitting channel is in input and output bidirectional connection with the radio frequency receiving and transmitting channel, and the radio frequency receiving and transmitting channel is connected with an input antenna and an output antenna
Wherein,
The medium-frequency receiving and transmitting channel is provided with a medium-frequency receiving and transmitting channel,
Receiving channel: the method has the advantages of measuring and controlling data transmission receiving intermediate frequency ADC sampling,
The transmission channel: the device is provided with a measurement and control data transmission transmitting intermediate frequency DAC and is modulated and output;
The radio frequency transceiver channel is provided with a radio frequency transceiver channel,
Receiving channel: after receiving the signal from the antenna network through the input antenna, the signal is subjected to input filtering, low noise amplification and down-conversion to a receiving intermediate frequency signal with fixed frequency,
The transmission channel: up-converting the transmitting intermediate frequency signal into a radio frequency signal with fixed frequency, amplifying the power, filtering the output, and transmitting the signal through an output antenna.
4. The on-board multi-synthesis flattened electronic system architecture of claim 3, wherein: the software radio IP core is embedded in the internal logic part of the SOC chip, and can receive and process remote control information from the intermediate frequency receiving and transmitting channel and transmit remote measurement information sent by the star service to the intermediate frequency receiving and transmitting channel.
5. The on-board multi-synthesis flattened electronic system architecture of claim 2, wherein: the machine A and the machine B are both provided with power management modules, so that the shunt regulation of the solar cell array and the charge and discharge control of the storage battery pack can be realized, and the single storage battery is sampled and balanced; the primary power source is converted to a secondary power source that meets power and quality requirements.
6. The on-board multi-synthesis flattened electronic system architecture of claim 5, wherein: the power management module comprises a storage battery management module, a primary power supply power regulation module and a secondary power supply conversion module, the satellite-borne multi-integrated flattened electronic system architecture further comprises a storage battery pack and a solar cell array, the output end of the storage battery pack is respectively connected with the storage battery management module of the machine A and the storage battery management module of the machine B, the output end of the solar cell array is respectively connected with the primary power supply power regulation module of the machine A and the primary power supply power regulation module of the machine B, the storage battery management module and the primary power supply power regulation module are respectively connected with the secondary power supply conversion module, and the secondary power supply conversion module is connected with the SOC chip.
7. The on-board multi-synthesis flattened electronic system architecture of claim 5, wherein: the configuration of the machine A and the configuration of the machine B are identical.
8. A design method of a satellite-borne multi-comprehensive flattened electronic system architecture is characterized by comprising the following steps: the on-board multi-synthesis flattened electronic system architecture of any one of claims 1 to 7 comprising:
And determining one of the A machine and the B machine as the on-duty machine and the other as the standby machine by the on-duty machine marking device, wherein the on-duty machine works in a full state mode and the standby machine works in a minimum system mode.
9. The method for designing a satellite-borne multi-synthesis flattened electronic system architecture of claim 8, wherein:
The same mark is provided for the machine A and the machine B through the on-duty mark device, and the on-duty mark is at a high level, so that the machine A is the on-duty machine, and the machine B is Wen Beiji; when the class machine mark is at a low level, the class machine B is the class machine, and the class machine A is Wen Beiji;
The star software is divided into a full-state program and a minimum system program, and according to the change of the on-duty machine mark, if the on-duty machine mark is changed from a high level to a low level, the A machine loads the minimum system program, and the B machine loads the full-state program, so that the on-duty machine is changed from the A machine to the B machine; if the on-duty machine mark is changed from low level to high level, the A machine can load the full state program, and the B machine can load the minimum system program, so that the on-duty machine is changed from the B machine to the A machine;
the data of the machine A and the machine B are recovered by adopting a cross backup mode, the data of the machine A and the machine B are recovered from the own memory preferentially, and the data are recovered from the other memory only when the abnormality occurs;
When the airliner and the Wen Bei are both capable of receiving a direct instruction and/or an indirect instruction on the ground to change the mark of the airliner, the switching between the airliner and the warm-standby airliner is realized;
the working state of the SOC chip is monitored through the state monitoring device, if the watchdog is abnormal or the data transmission is abnormal, the SOC chip is reset, the software of the SOC chip can be refreshed at regular time, and meanwhile, the program for updating the SOC chip through uploading from the ground is supported;
After the SOCs of the machine A and the machine B are reset each time, detecting a machine on duty mark, and if the machine on duty mark is at a high level, loading full state software on an SOC chip of the machine A, and loading minimum system software on an SOC chip of the machine B; if the on-duty machine mark is at a low level, loading full-state software on the SOC chip of the B machine, and loading minimum system software on the SOC chip of the A machine;
The full-state program and the minimum system program are respectively stored in the machine A and the machine B, reset is carried out each time, the SOC chip is loaded from the next program, the state monitoring device counts the reset times, and after the reset times reach four times, the state monitoring device changes the on-duty machine mark so as to realize the switching of the on-duty machine;
The internal logic part of the SOC chip is embedded with a software radio IP core, receives, stores and processes remote control information from the intermediate frequency receiving and transmitting channel, and transmits the remote control information sent by the star service to the intermediate frequency receiving and transmitting channel;
The receiving channel receives signals from the antenna network, then filters, amplifies and downconverts the signals into receiving intermediate frequency signals with fixed frequency, and the transmitting channel up-converts the transmitting intermediate frequency signals into radio frequency signals with fixed frequency, amplifies and filters the power and then transmits the signals from the antenna;
The comprehensive electronics transmits the telemetering data to the software radio IP of the SOC chip for recording, playback, framing, scrambling, encoding and modulation, the telemetering data is transmitted to the transmitting channel of the radio frequency receiving and transmitting channel after DAC conversion and modulation by the intermediate frequency receiving and transmitting channel, the transmitting channel of the radio frequency receiving and transmitting channel carries out up-conversion, power amplification and output filtering, the downlink modulation signal is transmitted to the comprehensive electronic data transmission antenna, after the power amplification by the comprehensive electronic data transmission antenna, the comprehensive electronic data transmission antenna directs to output, and a satellite-to-ground unidirectional transmission link is established jointly with the ground data transmission station, so that the ground wireless data transmission task is completed;
The power management realizes the shunt regulation of the solar cell array and the charge and discharge control of the storage battery pack, and the sampling and balance control of the storage battery cells; converting the primary power supply into a secondary power supply meeting the power and quality requirements;
The storage battery management module, the primary power supply power regulation module and the secondary power supply conversion module are all provided with backup circuits;
The star management comprises a remote control task, a remote control instruction and injection data are transmitted to an SOC chip through an uplink channel, the SOC chip demodulates and verifies the data, the data are processed after verification is correct, the SOC chip directly executes direct instructions, and the SOC chip verifies indirect instructions and injection data blocks firstly and then carries out identification execution according to the instructions or packets of the data blocks;
The star management comprises data acquisition and telemetering data transmission, wherein the acquired telemetering data comprises telemetering data of each lower computer, control component data, temperature information and load data; transmitting telemetry data to the surface via a satellite-to-ground link;
The star management also comprises a program control function, a time management function, an autonomous safety management function, an autonomous task management function, an important data management function, an on-orbit software modification and uploading function, a posture sensor data acquisition function, a posture control executing mechanism data acquisition and control function and a control software algorithm processing function.
10. A readable storage medium, characterized by: stored in the readable storage medium are execution instructions which, when executed by a processor, are adapted to carry out the method of any one of claims 8 to 9.
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