Selectivity and Sensitivity of Newly Developed Sensors for offgas Products from Heated Space Use Materials

摘要

The safety for manned space systems is fundamental technology that should be secured. The purpose of this investigation is to ensure and improve the safety of manned space systems by developing off-gas monitoring techniques for quickly and precisely detecting both unexpected toxic gases and abnormally elevated temperature conditions in a manned space system. To achieve the best compromise between low cost and high performance, we developed the new off-gas monitoring sensors using commercial off the shelf (COTS) gas sensors and an application technique enabling the commercial gas sensors to be used in a space environment. The developed sensors were tested on the ground in order to verify whether they could detect off-gas products when organic material for space use was heated. The developed sensors could detect the off-gas products selectivity with high sensitivity.