CN112231837A - Distributed thermal control design system based on spacecraft large-area thermal control scheme - Google Patents
Distributed thermal control design system based on spacecraft large-area thermal control scheme Download PDFInfo
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Abstract
The invention provides a distributed thermal control design system of a spacecraft large-area thermal control scheme; having "chain" and "tree" type topologies; the distributed thermal control design scheme comprises a distributed control single machine and a distributed driving single machine; the routing configuration mode of the chain type and tree type structure data communication; the distribution control single machine comprises a power supply and distribution unit, an RS422 interface communication unit and a heater switch control unit; the distributed driving single machine comprises RS422 interface communication, temperature telemetering acquisition and heater driving; the invention provides a distributed thermal control design method, defines the relevant components of a thermal control design scheme, has simple topological structure, flexible layout and convenient expansion, greatly reduces the weight of cables, greatly shortens the system development period, improves the efficiency, has wide applicability, provides reference and design basis for the design of the thermal control scheme of a spacecraft, and has certain technical progress.
Description
Technical Field
The invention relates to the technical field of satellite-borne electronic equipment, in particular to a distributed thermal control design system based on a spacecraft large-area thermal control scheme.
Background
With the application of large-scale SAR antennas and high-precision optical loads on satellites, the requirements of the satellites on thermal control systems increasingly tend to be large in area and distributed in points. Based on the requirement of large heat control quantity, heat control temperature measuring points and heaters are increased, and temperature measuring cables connected with the heaters are increased. The cable wiring and process complexity of large-scale antennas and mechanisms are increased, the weight of the cable is increased, the moment of inertia of load is increased, and the pointing stability of the satellite is reduced, which obviously hinders the light weight development of the satellite.
The distributed thermal control scheme adopts a 2-type standard single machine design scheme, the chain-type and tree-type structures of the distributed thermal control scheme can meet the requirements of large thermal control demand and large-area thermal control layout, and can also meet the requirements of thermal control distribution point dispersion, the distributed thermal control scheme can be flexibly arranged, the high integration level and the localization design adopted by a key circuit improve the effective utilization rate of a thermal control system, and realize the productization, de-modeling and universalization of the thermal control system.
With the progress of the aerospace technology, the bottleneck problem that the single machine cannot be designed uniformly and in a standardized manner due to the change of system requirements aiming at the requirements and characteristics of large-area and distributed thermal control is solved. The antenna with a complex structure designed based on the traditional thermal control system inevitably increases the weight of the whole satellite cable due to the larger thermal control space of the satellite; longer signal transmission will also lead to signal attenuation and heat loss. The distributed thermal control scheme adopts miniaturization, decentralized layout, standardized products and flexible expansion mode to adapt to various topological structures. There is a need in the art to provide a new distributed thermal control design method for spacecraft to improve system development efficiency and product reliability and reduce the overall satellite weight.
In the field of satellite thermal control, researchers in this field have proposed various methods for satellite thermal control design according to the patents that have been retrieved.
The invention patent of CN201711250499.1 discloses a thermal control management system for spacecraft, which includes a plurality of control units to realize thermal control of each region of the spacecraft. The topological structure of a distributed thermal control scheme is not involved, the design scheme and the routing configuration condition of a standardized two-type single machine are not involved, and the requirement for large-area thermal control weight reduction of the spacecraft, which is provided by the scheme, cannot be met.
The patent document CN 201610827985.4 discloses a device for quickly responding to thermal control capability of a space small satellite, which includes a thermal control assembly, a heat pipe, a heat conducting layer, and a space heat sink, mainly from the perspective of thermal control implementation, and does not relate to a distributed thermal design method for large-area thermal control of the spacecraft of this patent.
The patent document CN 201210175554.6 discloses a distributed thermal management system for battery modules, which includes a temperature detection control module, a heating module and a cooling module, and does not relate to a distributed thermal design method for large-area thermal control of a spacecraft in the present patent.
Therefore, at present, the problems that the weight of the whole satellite is increased due to large-area thermal control of a spacecraft, single machines cannot be unified due to change of system requirements and the like do not exist, signal attenuation and heat loss are caused due to long signal transmission, and a distributed thermal control scheme adopts miniaturization, dispersive layout and standardized products and a flexible expansion mode to adapt to various topological structures.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a distributed thermal control design system based on a spacecraft large-area thermal control scheme.
The distributed thermal control design system based on the spacecraft large-area thermal control scheme provided by the invention comprises a chain-type topological structure and a tree-type topological structure;
the chain type topological structure comprises a structure of connecting 1 distributed control single machine and a plurality of distributed drive single machines in series, or a structure of connecting a plurality of distributed control single machines and a plurality of distributed drive single machines in series;
the tree-type topological structure comprises a parallel structure of 1 distributed control single machine and a plurality of distributed drive single machines, or a parallel or series structure of 1 distributed control single machine and a plurality of distributed drive single machines.
Preferably, the distributed control unit and the distributed driving unit are connected in series or in parallel through the power supply loop and the communication link.
Preferably, the distribution control stand-alone includes a power supply and distribution unit, an RS422 interface communication unit, and a heater switch control unit, wherein:
the power supply and distribution unit receives the external primary power supply input of the single machine and realizes the control of the output of the multi-path primary power supply according to the OC instruction input from the outside;
the RS422 interface communication unit receives an instruction input by a stand-alone external RS422 and forwards the instruction to a corresponding RS422 interface according to a routing configuration requirement;
the RS422 interface communication unit receives the telemetering information of the distributed drive single machine, and performs telemetering packet combination according to the routing configuration information, wherein the routing configuration is static network configuration, and the network configuration information is determined by the network connection state;
and the heater switch control unit receives the temperature remote measurement acquisition result, judges that the temperature is lower than the lower limit of the temperature threshold value to control the heater to be switched on, and judges that the temperature is higher than the upper limit of the temperature threshold value to control the heater to be switched off.
Preferably, the routing configuration includes a hierarchy setting and a port setting.
Preferably, the distributed drive stand-alone comprises RS422 interface communication, temperature telemetry acquisition and heater drive, wherein:
the RS422 interface of the distributed driving single machine receives the instruction input by the distributed control single machine, analyzes the instruction and completes the on-off instruction of the heater driving control according to the instruction;
the distribution driving single machine RS422 interface communication temperature telemetering acquisition result is sent to a distribution control single machine;
the RS422 interface of the distributed driving single machine is used for receiving the telemetering information of the subsequent distributed control single machine or distributed driving single machine and directly transmitting the telemetering information to the preceding distributed control single machine or distributed driving single machine;
the thermometry telemeters a thermosensitive device that collects external input.
Preferably, in both "chain" and "tree" topologies, the messages are counted starting from the first distributed control standalone transmission, and the number of distributed control standalone to the very end of the topology is noted as the current distributed driven standalone level setting Xi.
Preferably, in both "chain" and "tree" topologies, the port arrangement includes a horizontal port arrangement and a vertical port arrangement;
the longitudinal port is provided with a position number to which a current distribution control single machine parallel-connected distribution driving single machine belongs, and is recorded as a position number Yj of the longitudinal port to which the current level belongs;
and the transverse port sets the sequence number of the distributed driving single machine which is connected with the current distributed control single machine in series, and records the sequence number as the sequence number Zk of the transverse port which the current level belongs to.
Preferably, the location of the topology network to which the distributed driving single machine belongs needs to be specifically located by setting the hierarchy Xi, the vertical port Yj and the horizontal port Zk.
Compared with the prior art, the invention has the following beneficial effects:
1. the system of the invention provides a distributed thermal control design method, and the related components of the thermal control design scheme are defined;
2. the invention greatly reduces the weight of the cable, greatly shortens the system development period, improves the efficiency, has wide applicability, provides reference and design basis for the design of the thermal control scheme of the spacecraft, and has certain technical progress.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of a "chain" type distributed thermal control system architecture;
FIG. 2 is a schematic diagram of a tree-type distributed thermal control system.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1 and fig. 2, in the present embodiment, the present invention relates to a design scheme based on large-area distributed thermal control, and the design scheme has "chain" type and "tree" type topologies;
the distributed thermal control design scheme comprises a distributed control single machine and a distributed driving single machine;
the distribution control single machine comprises a power supply and distribution unit, an RS422 interface communication unit and a heater switch control unit;
the power supply and distribution unit receives the external primary power supply input of the single machine and realizes the control of the output of the N paths of primary power supplies according to the OC instruction input externally;
the RS422 interface communication unit receives an instruction input by a stand-alone external RS422 and forwards the instruction to a corresponding RS422 interface according to a routing configuration requirement;
the RS422 interface communication unit receives the telemetering information of the distributed drive single machine, and performs telemetering packet combination according to the routing configuration information, wherein the routing configuration is static network configuration, and the network configuration information is determined by the network connection state;
the distribution control single machine receives the remote measuring information of the distribution driving single machine periodically, and combines the remote measuring information according to the remote measuring information of the local machine, and arranges the remote measuring information according to the local machine of the distribution control unit and the sequence ports of the distribution control single machine.
The packet formats of the distribution driving single machine and the distribution control single machine adopt a telemetering packet scheme which accords with CCSDS, if the distribution driving single machine can not communicate due to failure, the distribution control single machine sets a flag information bit to identify the abnormal working state or the shutdown state of the corresponding distribution driving single machine.
The routing configuration comprises a hierarchy setting and a port setting;
the heater switch control unit receives the temperature remote measurement acquisition result, judges that the temperature is lower than the lower limit of a temperature threshold value to control the heater to be switched on, and judges that the temperature is higher than the upper limit of the temperature threshold value to control the heater to be switched off;
the distributed driving single machine comprises RS422 interface communication, temperature telemetering acquisition and heater driving;
the RS422 interface of the distributed driving single machine receives the instruction input by the distributed control single machine, analyzes the instruction and completes the on-off instruction of the heater driving control according to the instruction;
the distribution driving single machine RS422 interface communication temperature telemetering acquisition result is sent to a distribution control single machine;
the RS422 interface of the distributed driving single machine is used for receiving the telemetering information of the subsequent distributed control single machine or distributed driving single machine and directly transmitting the telemetering information to the preceding distributed control single machine or distributed driving single machine;
the temperature measurement telemeters and acquires a thermosensitive device input from the outside;
the chain type topological structure comprises a scheme of connecting 1 distribution control single machine and N distribution driving single machines in series, or comprises a scheme of connecting X distribution control single machines and N distribution driving single machines in series. The tree-type topological structure comprises a parallel scheme of 1 distributed control single machine and N distributed drive single machines, or comprises a parallel or series scheme of X distributed control single machines and N distributed drive single machines. The chain-type and tree-type topological structures connect the distributed control single machine and the distributed drive single machine in series or in parallel through a power supply loop and a communication link;
the routing configuration comprises hierarchy setting and port setting, in a chain type topology structure and a tree type topology structure, messages are calculated from the transmission of a first distribution control single machine, and the number of the distribution control single machines to the tail end of the topology is recorded as current distribution drive single machine hierarchy setting Xi;
the routing configuration comprises hierarchical setting and port setting, and the port setting comprises transverse port setting and longitudinal port setting in a chain topology structure and a tree topology structure;
the longitudinal port is provided with a position number to which a current distribution control single machine parallel-connected distribution driving single machine belongs, and is recorded as a position number Yj of the longitudinal port to which the current level belongs;
the transverse port sets the sequence number of the distributed driving single machine which is connected with the current distributed control single machine in series, and records the sequence number as the sequence number Zk of the transverse port which the current level belongs to;
the routing configuration comprises hierarchical setting and port setting, and is characterized in that the position of a topological network to which the distributed driving single machine belongs is positioned, and comprehensive positioning is carried out by needing hierarchical setting Xi, longitudinal port setting Yj and transverse port setting Zk.
In conclusion, the system of the invention provides a distributed thermal control design method, relevant components of a thermal control design scheme are defined, the topological structure is simple, the layout is flexible, the expansion is convenient, the weight of cables is greatly reduced, the system development period is greatly shortened, the efficiency is improved, the applicability is wide, reference and design basis is provided for the design of the thermal control scheme of the spacecraft, and certain technical progress is achieved.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (8)
1. A distributed thermal control design system based on a spacecraft large-area thermal control scheme is characterized by comprising chain-type and tree-type topological structures;
the chain type topological structure comprises a structure of connecting 1 distributed control single machine and a plurality of distributed drive single machines in series, or a structure of connecting a plurality of distributed control single machines and a plurality of distributed drive single machines in series;
the tree-type topological structure comprises a parallel structure of 1 distributed control single machine and a plurality of distributed drive single machines, or a parallel or series structure of 1 distributed control single machine and a plurality of distributed drive single machines.
2. The distributed thermal control design system based on the spacecraft large area thermal control scheme of claim 1, wherein the distributed control units and the distributed drive units are connected in series or in parallel through power supply loops and communication links.
3. The distributed thermal control design system based on spacecraft large area thermal control scheme of claim 1, wherein the distributed control standalone comprises a power supply and distribution unit, an RS422 interface communication unit and a heater switch control unit, wherein:
the power supply and distribution unit receives the external primary power supply input of the single machine and realizes the control of the output of the multi-path primary power supply according to the OC instruction input from the outside;
the RS422 interface communication unit receives an instruction input by a stand-alone external RS422 and forwards the instruction to a corresponding RS422 interface according to a routing configuration requirement;
the RS422 interface communication unit receives the telemetering information of the distributed drive single machine, and performs telemetering packet combination according to the routing configuration information, wherein the routing configuration is static network configuration, and the network configuration information is determined by the network connection state;
and the heater switch control unit receives the temperature remote measurement acquisition result, judges that the temperature is lower than the lower limit of the temperature threshold value to control the heater to be switched on, and judges that the temperature is higher than the upper limit of the temperature threshold value to control the heater to be switched off.
4. The distributed thermal control design system of claim 3 based on a spacecraft large area thermal control scheme, wherein the routing configuration comprises a hierarchy setting and a port setting.
5. The distributed thermal control design system based on spacecraft large area thermal control scheme of claim 1, wherein the distributed drive standalone comprises RS422 interface communication, temperature telemetry acquisition, and heater drive, wherein:
the RS422 interface of the distributed driving single machine receives the instruction input by the distributed control single machine, analyzes the instruction and completes the on-off instruction of the heater driving control according to the instruction;
the distribution driving single machine RS422 interface communication temperature telemetering acquisition result is sent to a distribution control single machine;
the RS422 interface of the distributed driving single machine is used for receiving the telemetering information of the subsequent distributed control single machine or distributed driving single machine and directly transmitting the telemetering information to the preceding distributed control single machine or distributed driving single machine;
the thermometry telemeters a thermosensitive device that collects external input.
6. The distributed thermal control design system based on spacecraft large area thermal control scheme of claim 3, characterized in that in "chain" and "tree" type topologies, messages are calculated from the transmission of the first distributed control unit, and the number of distributed control units to the end of the topology is recorded as current distributed drive unit level setting Xi.
7. The distributed thermal control design system based on a spacecraft large area thermal control scheme of claim 4, wherein in both "chain" and "tree" topologies, port setups comprise lateral port setups and longitudinal port setups;
the longitudinal port is provided with a position number to which a current distribution control single machine parallel-connected distribution driving single machine belongs, and is recorded as a position number Yj of the longitudinal port to which the current level belongs;
and the transverse port sets the sequence number of the distributed driving single machine which is connected with the current distributed control single machine in series, and records the sequence number as the sequence number Zk of the transverse port which the current level belongs to.
8. The distributed thermal control design system based on the spacecraft large-area thermal control scheme of claim 5, wherein the location of the topology network to which the distributed driving single machine belongs is located, and specific location needs to be performed by hierarchical setting Xi, longitudinal port setting Yj, and transverse port setting Zk.
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| CN113900460A (en) * | 2021-10-25 | 2022-01-07 | 哈尔滨工大卫星技术有限公司 | Temperature control method, system and medium for satellite platform |
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