A wireless passive temperature control system applied to satellite thermal control system

Abstract

The invention provides a wireless passive temperature control system applied to a satellite thermal control system, including a wireless passive temperature sensor, an intelligent temperature controller, a heater, and a satellite computer. The temperature of various instruments and equipment of the satellite is transmitted to the intelligent temperature controller through wireless means; the temperature and position information of each part of the satellite is collected through the intelligent temperature controller, and the heating temperature of the relevant thermal control heater is used according to the temperature threshold of different parts. The power-off control realizes active temperature control, and at the same time, the temperature telemetry of each instrument and the internal state information of the stand-alone machine are sent to the star computer; by receiving the direct instructions sent by the star computer, the intelligent temperature controller plus power-off control and the main backup of the heater are realized. Switching control; the invention realizes the wireless passive collection of temperature information of various parts of the satellite, has the function of intelligent independent temperature control, and has the characteristics of light weight, simple configuration, and convenient disassembly and assembly.

Description

technical field [0001] The invention relates to the technical field of aerospace systems, in particular to a wireless passive temperature control system applied to a satellite thermal control system. Background technique [0002] The main function of the satellite thermal control system is to adopt thermal control measures to ensure the ambient temperature level of all instruments, equipment and structural parts of the satellite during the entire operation period according to the requirements of the satellite mission and the internal and external thermal load conditions that the satellite must withstand during the orbit. Stay within the specified range. The traditional satellite thermal control system generally realizes the temperature control of various parts of the satellite through the thermistor, remote measurement sampling unit, heater, heater power supply control unit, star computer, cable connection and other units or components. This method has the following problems...

AI Technical Summary

Problems solved by technology

The traditional satellite thermal control system generally realizes the temperature control of various parts of the satellite through the thermistor, remote measurement sampling unit, heater, heater power supply control unit, star computer, cable connection and other units or components. This method has the following problems: (1) The external interface is complex: the thermal control system needs to realize the temperature control system, the overall circuit system, the power system, the measurement and control system and other systems to work together, and the external interface is complex; (2) The connection is complex: the thermal control system needs to collect The temperature of the instruments and equipment in various parts of the whole star is as high as hundreds, and all need to be connected by wired cables. The connection is vertical and horizontal, and the wiring is complicated, which increases the complexity of the whole star cable. (3) Complex control: The traditional thermal control system judges based on the temperature telemetry data of the remote sampling stand-alone unit, and controls the heater by controlling the power distribution stand-alone unit of the overall circuit system through the star computer, and the control process is complicated; (4) Disassembly and assembly Complicated: traditional thermal control system thermistors are pasted on various parts of satellite instruments and equipment. During the satellite electrical test process, there are often disassembly and assembly phenomena. (5) Data acquisition is complex: general thermal control systems use thermistors for temperature measurement, and the remote measurement sampling unit performs temperature collection, and the overall cable network needs to connect the thermistor to the remote measurement sampling unit through wired methods. , the telemetry sampling unit generally needs to set a 5V power supply and a voltage dividing resistor, collect the divided voltage value of the thermistor through the sampling circuit, and then calculate the temperature value inversely through the corresponding formula, the data acquisition system is complex

[0003] The utility model patent document CN201520726600.6 discloses "a wireless passive temperature detection system applied to vacuum temperature measurement", which uses thermocouples and chips to receive signals through computers and mobile phones to achieve temperature detection, which is not suitable for satellite systems ; The patent document is the invention patent of CN201710531331.9, which publicizes "a wireless passive temperature detection system applied to pharmaceutical chain logistics", which is used in the logistics industry, transmits signals through Bluetooth, and realizes monitoring on mobile phones, which is not suitable for spacecraft ; The utility model patent document CN20162106669.1 discloses "a passive wireless temperature measurement system applied to high-voltage cable accessories", which is suitable for road-top connecting pipes and armor, but not for satellite systems

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