T. Ohtani, S. Tanaka, Y. Narita, S. Ariyoshi, S. Suzuki
언어
영어(ENG)
URL
https://www.earticle.net/Article/A261113
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4,000원
원문정보
초록
영어
In terms of food safety,mixture of contaminants in food is a serious problem for not only consumers but also manufacturers. In general, the target size of the metallic contaminant to be removed is 0.5 mm. However, it is a difficult task for manufacturers to achieve this target, because of lower system sensitivity. Therefore, we developed a food contaminant detection system based on high-Tc RF superconducting quantum interference devices (SQUIDs), which are highly sensitive magnetic sensors. This study aims to improve the signal to noise ratio (SNR) of the system and detect a 0.5 mmdiameter steel ball. Using a real time digital signal processing technique along with analog band-pass filters, we improved the SNR of the system. Owing to the improved SNR, a steel ball with a diameter as small as 0.3 mm, with stand-off distance of 117 mm was successfully detected. These results suggest that the proposed system is a promising candidate for the detection of metallic contaminants in food products.
목차
Abstract 1. INTRODUCTION 2. PROPOSED SYSTEM 2.1. Configuration and Specifications of Equipment 2.2. Considerations for Filters 3. EVALUTION 3.1. Effect of Digital Filter 3.2. Performances 3. CONCLUSIONS ACKNOWLEDGMENT REFERENCES