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, the wireless passive temperature control system comprises a plurality of wireless passive temperature sensors, an intelligent temperature controller, a heater and a satellite computer, and is characterized in that the temperature quantity of parts such as instruments and equipment ofa satellite is acquired through the plurality of wireless passive temperature sensors and is transmitted to the intelligent temperature controller in a wireless manner; the temperature and position information of each part of the satellite is collected through the intelligent temperature controller, the active temperature control is realized through power-on and power-off control of the related thermal control heater according to temperature thresholds of different parts, and meanwhile, the temperature remote measurement of each instrument and equipment and internal state information of a single machine are sent to the satellite computer; direct instructions sent by the satellite computer are received to achieve the switching control over power-on and power-off of the intelligent temperature controller and main backup and backup of the heater. The wireless passive acquisition of temperature information of all parts of the satellite is realized, and the wireless passive temperature control system has an intelligent autonomous temperature control function and has the characteristics of light weight, simple configuration, convenient disassembly and assembly and the like.

Description

Technical field [0001] The present invention relates to space system technology, and in particular, to a wireless passive temperature control system applied to satellite thermal control systems. Background technique [0002] The main function of the satellite thermal control system is based on the requirements of satellite flight task, as well as the inside of the satellite to be subjected to, using thermal control measures to ensure the ambient temperature of all instrumentation and structural parts during the entire operation period. Maintains within the specified range. Traditional satellite thermal control systems typically achieve the temperature control of the satellite parts by thermal resistance, telemetry sampling single machine, heater, heater power control stand-alone, star computer, cable connection, etc., this approach exists as follows: (1) Complex external interface: The thermal control system should achieve temperature control requires the synergy of the Star syst...

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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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