基于FBAR的便携式电子鼻冷链香蕉货架时间实时检测

IF 3.5 3区 工程技术 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Chen Wu, Jiuyan Li
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引用次数: 1

摘要

气体传感器价格低廉、无损且易于使用,在食品工业中发挥着重要作用。然而,大多数气体传感器更适合实验室质量快速测试,而不是冷链连续和累积测试。此外,冷链中理想的电子鼻(E-nose)应该对周围环境稳定,并保持高度准确和便携。在这项工作中,建立了一个基于便携式薄膜体声波谐振器(FBAR)的电子鼻,用于实时测量香蕉货架时间。容纳E鼻便携式电路的传感器室和智能手机一样小,通过引入气密FBAR作为参考,E鼻可以避免大部分由周围环境引起的漂移。在FBAR的多孔逐层(LBL)涂层的帮助下,E鼻对乙烯的灵敏度为5ppm,对乙酸异戊酯和丁酸异戊酯的灵敏度为0.5ppm,而检测范围足够大,可以覆盖0.8的相对湿度。在这方面,E鼻可以很容易地区分有绿色脖子的黄色香蕉和完全黄色的香蕉,同时允许香蕉在正常储存状态下保持其生物活性,从而显示出实时保质期检测的可能性。这种基于FBAR的便携式电子鼻测试规模大、灵敏度高、耐湿性好、对周围环境的漂移频率低,从而满足冷链使用的需求。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Portable FBAR based E-nose for cold chain real-time bananas shelf time detection
Being cheap, nondestructive, and easy to use, gas sensors play important roles in the food industry. However, most gas sensors are suitable more for laboratory-quality fast testing rather than for cold-chain continuous and cumulative testing. Also, an ideal electronic nose (E-nose) in a cold chain should be stable to its surroundings and remain highly accurate and portable. In this work, a portable film bulk acoustic resonator (FBAR)-based E-nose was built for real-time measurement of banana shelf time. The sensor chamber to contain the portable circuit of the E-nose is as small as a smartphone, and by introducing an air-tight FBAR as a reference, the E-nose can avoid most of the drift caused by surroundings. With the help of porous layer by layer (LBL) coating of the FBAR, the sensitivity of the E-nose is 5 ppm to ethylene and 0.5 ppm to isoamyl acetate and isoamyl butyrate, while the detection range is large enough to cover a relative humidity of 0.8. In this regard, the E-nose can easily discriminate between yellow bananas with green necks and entirely yellow bananas while allowing the bananas to maintain their biological activities in their normal storage state, thereby showing the possibility of real-time shelf time detection. This portable FBAR-based E-nose has a large testing scale, high sensitivity, good humidity tolerance, and low frequency drift to its surroundings, thereby meeting the needs of cold-chain usage.
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来源期刊
Nami Jishu yu Jingmi Gongcheng/Nanotechnology and Precision Engineering
Nami Jishu yu Jingmi Gongcheng/Nanotechnology and Precision Engineering Engineering-Industrial and Manufacturing Engineering
CiteScore
6.50
自引率
0.00%
发文量
1379
审稿时长
14 weeks
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