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Aerospace water sublimator hybrid optical fiber sensing monitoring device and monitoring method

A water sublimator and optical fiber sensing technology, which is applied in the field of spacecraft thermal control, can solve problems such as the harsh working environment of aerospace and the inability to monitor the working status of the water sublimator, and achieve the effect of overcoming the inability to monitor

Active Publication Date: 2016-01-27
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the harsh working environment of aerospace, traditional electrical measurement methods cannot monitor the working status of the water sublimator.

Method used

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  • Aerospace water sublimator hybrid optical fiber sensing monitoring device and monitoring method
  • Aerospace water sublimator hybrid optical fiber sensing monitoring device and monitoring method
  • Aerospace water sublimator hybrid optical fiber sensing monitoring device and monitoring method

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Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1: Water sublimator hybrid fiber optic sensing monitoring device

[0031] Such as figure 1 The water sublimator hybrid optical fiber sensing and monitoring device shown includes a hybrid light source module 4 (composed of a 1550nm band tunable light source component 1, a 1310nm band narrowband light source component 2 and a 550nm band broadband light source component 3), an optical power distribution module 5 (composed of three 1×8 beam splitters), multi-core optical cable 6; fiber optic coupler array module 7 (composed of 24 optical fiber couplers), multi-core high airtight optical fiber wall flange 8 (composed of 3 2 ~8-core high airtight fiber optic wall flange), space environment simulator 9, aerospace water sublimator 10, low temperature resistant optical fiber temperature sensor array 11, low temperature resistant optical fiber pressure sensor array 12, low temperature resistant optical fiber vibration sensor array 13, Multi-fiber sensor fixed bracket ...

Embodiment 2

[0032] Embodiment 2: Water sublimator hybrid optical fiber sensing monitoring method

[0033] Such as figure 2As shown, the multi-fiber sensor fixing bracket 14 fixed with the low temperature resistant optical fiber temperature sensor array 11, the low temperature resistant optical fiber pressure sensor array 12 and the low temperature resistant optical fiber vibration sensor array 13 is fixed on the aerospace water sublimator 10 in the space environment simulator 9 near the vent. The light of the three bands of the hybrid light source module 4 passes through the optical power distribution module 5 and enters the fiber coupler module 7, where the outgoing light is respectively sent to the low temperature resistant optical fiber temperature sensor, the low temperature resistant optical fiber pressure sensor and the low temperature resistant optical fiber vibration sensor, carrying temperature , pressure and vibration information are received by the hybrid optical fiber signal...

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Abstract

The invention discloses a hybrid optical fiber sensing monitoring device of a space water sublimator and a monitoring method. The hybrid optical fiber sensing monitoring device of the space water sublimator is sequentially provided with a hybrid light source module, a luminous power distribution module, multi-core cables, an optical fiber coupler array module, multi-core high-airtightness optical fiber wall passing flanges, a low-temperature-resistant optical fiber temperature sensor array, a low-temperature-resistant optical fiber pressure sensor array, a low-temperature-resistant optical fiber vibrating sensor array, a multiple optical fiber sensor fixing support, a spectrum scanning and receiving assembly, a low coherence interference fringe receiving assembly, a hybrid optical fiber signal receiving module and a data collecting and processing unit in a connecting mode from input to output through the multi-core cables. Compared with the prior art, the hybrid optical fiber sensing monitoring device integrates multiple optical fiber sensing technologies, a vibration signal, a temperature signal and a pressure signal are jointly taken as physical quantities for representing working states of the water sublimator, the three signals are demodulated and subjected to data fusion analysis at the same time, and the working states of the water sublimator are accurately analyzed and judged out.

Description

technical field [0001] The invention relates to the technical field of spacecraft thermal control, in particular to a hybrid optical fiber sensing and monitoring device and method for an aerospace water sublimator. Background technique [0002] With the rapid development of manned spaceflight technology, astronauts' on-orbit and out-of-cabin activities are becoming more and more frequent, and the importance of extravehicular spacesuit systems is becoming more and more significant. The extravehicular spacesuit system is an important equipment to ensure that the astronauts complete the task of leaving the cabin safely and effectively. The thermal control system, as an important part of the portable life protection system of the extravehicular spacesuit, provides a cold source for the spacesuit, and at the same time, the low-pressure cycle The moisture contained in the oxygen circuit is condensed to ensure the thermal comfort of the astronauts during extravehicular activities. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D21/02
Inventor 刘铁根江俊峰刘琨王双吴振海宋璐瑶赵鹏尹金德吴凡
Owner TIANJIN UNIV