CN109240161B - Controller and control method for space station environment control and life support system - Google Patents
Controller and control method for space station environment control and life support system Download PDFInfo
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- CN109240161B CN109240161B CN201811097453.5A CN201811097453A CN109240161B CN 109240161 B CN109240161 B CN 109240161B CN 201811097453 A CN201811097453 A CN 201811097453A CN 109240161 B CN109240161 B CN 109240161B
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- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24024—Safety, surveillance
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Abstract
A space station environment control and life support system controller and a control method thereof are provided, the system controller comprises a plurality of redundantly arranged power supply units and a plurality of redundantly arranged environment control and life support system units, and the environment control and life support system units are connected through an interaction channel; the environment control and life support system unit comprises a processor module and a power supply conversion module, wherein the processor module is connected with the subsystem management module, the data uploading module, the state telemetry module, the reset circuit, the clock circuit, the data memory and the program memory, and the power supply conversion module converts secondary direct current voltage provided by the power supply unit into working voltage required by the subsystem management module, the data uploading module and the state telemetry module respectively. The control method comprises the steps of collecting environment monitoring data of all the subsystems, and then analyzing and processing the collected environment monitoring data through a system controller. The invention can provide reliable real-time data of the life environment parameters for astronauts.
Description
Technical Field
The invention belongs to the field of automatic control, and relates to a space station environment control and life support system controller and a control method.
Background
At present, an environment control and life support system applied to manned spacecrafts in China mainly ensures short-term on-orbit stop of spacemen and can not be replaced and maintained on orbit. The space station needs to carry out huge data transmission, regeneration and non-regeneration subsystem management, on-orbit maintenance and the like when being attended for a long time (15 years), and the traditional environment control and life support system cannot meet the requirement of on-orbit residence of space station astronauts, so that a novel in-cabin environment control and life support device needs to be developed for realizing a water treatment subsystem, a urine treatment subsystem, a CO (carbon monoxide) subsystem and the like2The removal subsystem, the electrolysis oxygen generation subsystem and the micro removal subsystem are managed, the regeneration and non-regeneration subsystems in the space living environment are monitored and controlled in real time, and the system has the characteristics of high reliability and strong real-time propertyAnd (4) point.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a space station environment control and life support system controller and a control method, which realize real-time monitoring and control of the space living environment of a regenerative subsystem and a non-regenerative subsystem through technologies such as high-speed data transmission, regenerative and non-regenerative subsystem management, single-machine on-orbit replacement and the like, provide reliable real-time data of the parameters of the living environment for astronauts, ensure the safety of the space living environment and meet the requirement of long-term on-orbit residence of the astronauts.
In order to achieve the above object, the space station environmental control and life support system controller of the present invention structurally comprises:
the system comprises a plurality of redundant power supply units and a plurality of redundant environment control and life support system units, wherein the power supply units can convert voltage on a primary bus into secondary direct current voltage to be supplied to the environment control and life support system units, and the environment control and life support system units are connected through an interaction channel; the environment control and life support system unit comprises a processor module and a power supply conversion module, wherein the processor module is connected with a subsystem management module, a data uploading module, a state remote sensing module, a reset circuit, a clock circuit, a data memory and a program memory, the subsystem management module performs centralized management on data of each subsystem through a system management bus, the data uploading module uploads the data processed by the subsystem management module to the data management system through an external bus, the state remote sensing module sends the working state of the processor module to the test and control system, the reset circuit provides a power-on initial reset signal for the processor module, and the clock circuit provides a working clock signal for the processor module; the power supply conversion module converts the secondary direct current voltage provided by the power supply unit into working voltages required by the subsystem management module, the data uploading module and the state telemetry module respectively through the low dropout regulator (LDO).
The interaction channel comprises an open collector gate level signal circuit for state interaction and data processingAn interactive RS422 bus. The processor module adopts a domestic BM3803 processor, and the capacities of a data memory and a program memory are both 2 Mbytes. The subsystem management module works in a BC mode, and the data uploading module works in an RT mode; the system management bus and the external bus adopt 1553B buses. The secondary direct current voltage supplied by the power supply unit to the environment control and life support system unit is +5V, and the secondary direct current voltage supplied by the power supply unit is converted into +3.3V and +1.8V voltage by the power supply conversion module respectively. The subsystem comprises a water treatment subsystem, a urine treatment subsystem and CO2A removal subsystem, an electrolysis oxygen generation subsystem and a trace removal subsystem.
The invention relates to a control method of a space station environment control and life support system controller, which comprises the following steps:
a. collecting water treatment subsystem controller, urine treatment subsystem controller, CO2The removal subsystem controller, the electrolysis oxygen generation subsystem controller and the micro removal subsystem controller are used for monitoring the environment of each subsystem;
b. analyzing and processing the collected environment monitoring data through a system controller:
b-1, sending a water supply valve opening instruction when the system is lack of water, and sending a liquid full alarm instruction when the system is full of water;
b-2, sending an instruction to discharge and process the urine of the astronaut according to the requirement;
b-3. according to CO in space station2Concentration of high-low opening CO2Removal operation to ensure CO2The content is in a normal range;
b-4, opening or closing an oxygen making valve according to the oxygen concentration in the space station to ensure the oxygen content and the safety of astronauts;
and b-5, removing the trace elements according to the detection result of the trace elements, and ensuring that the trace elements are in a normal range.
Compared with the prior art, the invention has the following beneficial effects: by arranging the power supply unit and the environment control and life support system unit which are arranged in a complete redundancy mode, the upstream power supply system independently controls the switch of the power supply unit according to the working state of the system controller, and the reliability of the product power supply system is improved. The environmental control and life support system unit is mainly used for managing each subsystem in the cabin, realizing the real-time monitoring and control of the regenerative and non-regenerative subsystems and providing reliable environmental parameter real-time data. The invention adopts a centralized management mode to monitor and control the living environment in the cabin of the astronaut in real time, overcomes the defects of data dispersion, complex management and the like in the prior distributed management of an environment control and life support system, improves the efficiency of system management, solves the problem of environment control under the condition that people stay in orbit for a long time in a space station, and provides a comfortable in-orbit working living environment for the astronaut.
Drawings
FIG. 1 is a functional block diagram of an implementation of the system controller of the present invention;
FIG. 2 is a schematic block diagram of an implementation of the power supply unit of the present invention;
FIG. 3 is a block diagram of the environmental control and life support system elements of the present invention;
FIG. 4 is a block diagram of an embodiment of a system controller according to the present invention;
in the drawings: 1-a processor module; 2-subsystem management module; 3-a data uploading module; 4-state telemetry module; 5-a reset circuit; 6-a clock circuit; 7-a data memory; 8-program memory; 9-power conversion module.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the space station environmental control and life support system controller includes two completely redundant power supply units and two completely redundant environmental control and life support system units, the two completely redundant environmental control and life support system units perform state interaction through an open collector gate level signal circuit, and perform data interaction through an RS422 bus.
Referring to fig. 2, the power supply unit of the present invention mainly provides a power supply for the environmental monitoring and life support system unit, and can convert the voltage on the primary bus into a secondary dc voltage to be supplied to the environmental control and life support system unit.
Referring to fig. 3, the environmental control and life support system unit in the system controller of the present invention includes a processor module 1 and a power conversion module 9, wherein the processor module 1 is connected to a subsystem management module 2, a data uploading module 3, a state telemetry module 4, a reset circuit 5, a clock circuit 6, a data memory 7 and a program memory 8. The processor module 1 adopts a domestic BM3803 processor, and the capacities of the data memory 7 and the program memory 8 are both 2 Mbytes. The subsystem management module 2 carries out centralized management on the data of each subsystem through a system management bus, and the subsystems comprise a water treatment subsystem, a urine treatment subsystem, a CO2 removal subsystem, an electrolysis oxygen generation subsystem and a trace removal subsystem. The data uploading module 3 uploads the data processed by the subsystem management module 2 to a data management system through an external bus, the state telemetry module 4 sends the working state of the processor module 1 to a measurement and control system, the subsystem management module 2 works in a BC mode, the data uploading module 3 works in an RT mode, and the system management bus and the external bus adopt a 1553B bus. The reset circuit 5 provides a power-on initial reset signal for the processor module 1, and the clock circuit 6 provides a working clock signal for the processor module 1. The power conversion module 9 converts the +5V secondary dc voltage provided by the power supply unit into +3.3V and +1.8V voltages required by the subsystem management module 2, the data uploading module 3 and the state telemetry module 4, respectively, through the low dropout regulator LDO.
The invention relates to a control method of a space station environment control and life support system controller, which comprises the following steps:
a. collecting water treatment subsystem controller, urine treatment subsystem controller, CO2The removal subsystem controller, the electrolysis oxygen generation subsystem controller and the micro removal subsystem controller are used for monitoring the environment of each subsystem;
b. analyzing and processing the collected environment monitoring data through a system controller:
b-1, sending a water supply valve opening instruction when the system is lack of water, and sending a liquid full alarm instruction when the system is full of water;
b-2, sending an instruction to discharge and process the urine of the astronaut according to the requirement;
b-3. according to CO in space station2Concentration of high-low opening CO2Removal operation to ensure CO2The content is in a normal range;
b-4, opening or closing an oxygen making valve according to the oxygen concentration in the space station to ensure the oxygen content and the safety of astronauts;
and b-5, removing the trace elements according to the detection result of the trace elements, and ensuring that the trace elements are in a normal range.
Through practical application verification, the device realizes centralized management of each regenerative subsystem and each non-regenerative subsystem in the system. When the system is used, the controller is powered through the power supply and distribution system, automatically runs after being powered on, collects the living environment parameter data collected by each subsystem controller in the cabin in real time, can perform centralized processing and analysis on the data, gives an evaluation result of the living environment in the cabin, distributes a control command to each subsystem controller, and adjusts the environmental parameters of each subsystem through the subsystem controller, so that the safety and long-term on-orbit residence of the on-orbit space living environment of a spacecraft are ensured. The controller is developed and delivered to a user for ground joint test, various functional performance indexes meet the requirements of the user, and the controller works normally.
Claims (7)
1. A space station environmental control and life support system controller which characterized in that: the system comprises a plurality of redundant power supply units and a plurality of redundant environment control and life support system units, wherein the power supply units can convert voltage on a primary bus into secondary direct current voltage to be supplied to the environment control and life support system units, and the environment control and life support system units are connected through an interaction channel; the environment control and life support system unit comprises a processor module (1) and a power supply conversion module (9), wherein the processor module (1) is connected with a subsystem management module (2), a data uploading module (3), a state telemetering module (4), a reset circuit (5), a clock circuit (6), a data memory (7) and a program memory (8), the system comprises a subsystem management module (2), a data uploading module (3), a state telemetry module (4), a reset circuit (5), a clock circuit (6) and a data processing module (1), wherein the subsystem management module (2) performs centralized management on data of each subsystem through a system management bus, the data uploading module (3) uploads the data processed by the subsystem management module (2) to the data management system through an external bus, the state telemetry module (4) transmits the working state of the processor module (1) to the measurement and control system, the reset circuit provides a power-on initial reset signal for the processor module (1), and the clock circuit (6) provides a working clock signal for the processor module (; and the power supply conversion module (9) converts the secondary direct current voltage provided by the power supply unit into working voltages required by the subsystem management module (2), the data uploading module (3) and the state telemetry module (4) respectively through the low dropout regulator (LDO).
2. The space station environmental control and life support system controller of claim 1, wherein: the interaction channel comprises an open collector gate level signal circuit for state interaction and an RS422 bus for data interaction.
3. The space station environmental control and life support system controller of claim 1, wherein: the processor module (1) adopts a domestic BM3803 processor, and the capacities of the data memory (7) and the program memory (8) are both 2 Mbytes.
4. The space station environmental control and life support system controller of claim 1, wherein: the subsystem management module (2) works in a BC mode, and the data uploading module (3) works in an RT mode;
the system management bus and the external bus adopt 1553B buses.
5. The space station environmental control and life support system controller of claim 1, wherein: the secondary direct-current voltage supplied to the environment control and life support system unit by the power supply unit is +5V, and the secondary direct-current voltage supplied by the power supply unit is converted into +3.3V and +1.8V by the power supply conversion module (9) respectively.
6. The space station environmental control of claim 1With life support system controller, its characterized in that: the subsystem comprises a water treatment subsystem, a urine treatment subsystem and CO2A removal subsystem, an electrolysis oxygen generation subsystem and a trace removal subsystem.
7. A control method using the space station environmental control and life support system controller according to any one of claims 1 to 6, comprising the steps of:
a. collecting water treatment subsystem controller, urine treatment subsystem controller, CO2The removal subsystem controller, the electrolysis oxygen generation subsystem controller and the micro removal subsystem controller are used for monitoring the environment of each subsystem;
b. analyzing and processing the collected environment monitoring data through a system controller:
b-1, sending a water supply valve opening instruction when the system is lack of water, and sending a liquid full alarm instruction when the system is full of water;
b-2, sending an instruction to discharge and process the urine of the astronaut according to the requirement;
b-3. according to CO in space station2Concentration of high-low opening CO2Removal operation to ensure CO2The content is in a normal range;
b-4, opening or closing an oxygen making valve according to the oxygen concentration in the space station to ensure the oxygen content and the safety of astronauts;
and b-5, removing the trace elements according to the detection result of the trace elements, and ensuring that the trace elements are in a normal range.
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| CN110304281B (en) * | 2019-05-24 | 2020-09-25 | 北京天问空间科技有限公司 | Automatic control method for preventing experimental data of space station from being lost |
| CN115013432B (en) * | 2022-06-02 | 2023-09-01 | 中国人民解放军国防科技大学 | On-orbit harmful gas removal unit storage device |
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