氣調櫃環境監測系統之研製

Abstract

本研究研製一個氣調櫃環境監測系統，其中監測裝置特色包含有充足量測範圍(氧氣: 0-25%; 二氧化碳: 0-20%) 、低成本(約新台幣7300 元) 、易攜帶(體積約18×14×10 cm3, 重量約1 kg) 及長時間續航(最大續航約59 天)，這些性能相較組裝市售產品在佈置環境監測系統更有優勢。而在監測資料分析系統上，提供使用者彈性選擇想觀察環境量測時間區段、特定監測裝置環境量測結果及計算環境量測平均值及標準差。對於快速瞭解氣調櫃內各處氣體濃度的變化相當方便。本研究也把研發的系統應用在番荔枝氣調貯藏實驗中，我們不僅示範如何應用研製的監測系統，也對於氣調櫃環境裡不同包裝箱擺設下氣體變化情形有所觀察。實驗結果顯示在氣調櫃中間以一般包裝箱交錯堆疊的情況下，二氧化碳累積最為嚴重；而以在包裝箱及堆放為增加五個通氣通道的設計情況下，二氧化碳累積最為輕微，在包裝箱內與外的二氧化碳濃度已沒有明顯差異。

This study aim to develop an environmental monitoring system for controlled Atmosphere Container. Our monitoring device features a sufficient measurement range (oxygen range from 0-25%; carbon dioxide range from 0-20%), low cost (about NT$7,300), easy to carry (the volume of it is about 18×14×10 cm3, the weight of it is about 1 kg) and long operation time (up to 59 days), which are more beneficial compared to commercially available products. Our system for monitoring system data analysis offer flexibility to support user in comparing measurement results. For example, one can adjust the time period to display, choose a set of specific monitoring devices’measurements to display, and use the system to calculate the average and standard deviation of the measurements. These features make it convenient for tracing the container's dynamics in controlling atmosphere. Finally, this developed environmental monitoring system was applied to support the real monitoring controlled atmosphere storages on sugar-apple. We not only demonstrate how to apply our system, but also make observations on how cargo placement can influence controlling atmosphere efficiency of the container. From experimental results, the “usual box design with interleaved stacking” in the middle region of the container accumulated CO2 inside the box most seriously; while the “five holes box design with upright stacking” released CO2 the most, making gas concentration inside the box no significant different from outside the box.