飞机座舱空气质量检测气压补偿方法

doi:10.3969/j.issn.1000-1158.2020.11.21

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Abstract The larger aircraft cabin air pressure range had great influence on the gas sensor, resulting in inaccurate air quality detect results, RBF neural network was proposed to compensate air pressure. Firstly, the experimental system was designed. Then positive and negative pressure experiments were carried out on four typical gas sensors for cabin air quality detection including HCHO, CO, CO2 and NO2. The test data were collected and the characteristic curves of each gas were drawn. Finally, a three-layer RBF neural network model with 12 pressure points and measured values as inputs and expected values as outputs was established, and the error correction compensation was made to the experimental data. The results showed that the RBF neural network compensation algorithm can reduce the maximum relative error of HCHO, CO, CO2 and NO2 gas sensors from 32.85%, 28.42%, 52.87%, 87.18% to 2.001%, 3.668%, 2.392%, 12.68% respectively, achieve a better compensation effect.

Key words： metrology air quality detection air pressure compensation aircraft cabin gas sensor RBF neural network

Received: 19 January 2020 Published: 02 November 2020

PACS:	TB99
	X851

Fund:Project supported by the Science and Technology Program of Civil Aviation Administration ,China：Study on airworthiness certification technology of cockpit air environment of large passenger aircraft

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	Articles by authors
	HE Yong-bo
	TIAN Ji-lei
	HUANG Lü-lin
	LI Ming-wei

Cite this article:

HE Yong-bo,TIAN Ji-lei,HUANG Lü-lin, et al. Pressure Compensation Method on Aircraft Cabin Air Quality Detection[J]. Acta Metrologica Sinica, 2020, 41(11): 1443-1448.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2020.11.21 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2020/V41/I11/1443

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