On-line Detection of Gas Concentration during Weapon Firing Based on Tunable Diode Laser Absorption Spectroscopy

doi:10.3969/j.issn.1000-1093.2018.07.018

Abstract

Abstract: Electrochemical gas concentration detecting system can not meet the composition and concentration detection requirements of the harmful gas generated by weapon system during firing due to its low response speed and small dynamic range. An on-line detection method of CO concentration based on tunable diode laser absorption spectroscopy (TDLAS) which is suitable for weapon launch site is presented. The detection model of the weapon emission gas concentration based on TDLAS technology is introduced, an on-line detection system of CO concentration is built. The interference of gas jet and liquid water in tank to the CO concentration measurement is avoided by selecting and controlling CO absorption peak. A method is proposed to verify the on-line dynamic detection performance of TDLAS on CO experimentally, in which less dissipation of CO gas produced by a single soldier rocket in a limited space is made use of. The test and analyzed results show that the response rate of TDLAS gas concentration detecting system is 5-15 s faster than that of electrochemical sensor, and TDLAS effective range is up to 100% (volume ratio), which can take a rapid detection for continuous shooting. In addition, non-invasive detection overcomes the influence of impact vibration on the detecting system during launching of weapon system. Key

Key words: tunablediodelaserabsorptionspectroscopy, weaponfiring, gasconcentration, on-lineinspection, finitespace

CLC Number:

TJ06

PENG Peng, DI Chang-an, ZHANG Yong-jian, CHEN Hao-fei, SONG Wei, YIN Qiang. On-line Detection of Gas Concentration during Weapon Firing Based on Tunable Diode Laser Absorption Spectroscopy[J]. Acta Armamentarii, 2018, 39(7): 1397-1403.

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第39卷
第7期2018 年7月兵工学报ACTA
ARMAMENTARIIVol.39No.7Jul.2018