High-speed display-delayed planar X-ray inspection system for the fast detection of small fishbones

The fast detection of native hazardous material (fishbones) and foreign material contamination (metals, stones, pen caps, etc.) have limited mass production and good sale of fish fillets in aquatic product processing plant. In this work, we developed a high speed display-delayed planar X-ray inspection system, which could be applied to rapidly and efficiently distinguish small fishbones in fish fillets and foreign material contamination with fish fillets. It had a high resolution of short metal lines (at least 2 mm in length and 0.2 mm in diameter) and small fishbones (4 mm in length and 0.6 mm in diameter). Moreover, it could be applied to efficiently distinguish small fishbones in frozen fish fillets. The theoretical and practical basis of high speed high resolution display-delayed X-ray inspection system is also discussed in this work. All the results confirmed that this system was efficient, fast, and convenient for the detection of small fishbones. This work provides a useful way for fast detection of small fishbones in fish fillets in aquatic product processing plant. Practical applicationsThe practical application of this article is to identify the native hazardous material (fishbones) and foreign material contamination (metals, stones, pen caps, etc.) in mass production of fish fillets in aquatic product processing plant by high-speed display-delayed X-ray system. Compared with traditional finger touching and eye observing method, high-speed display-delayed X-ray system can be applied to identify fishbones and foreign materials quickly and conveniently. Moreover, this system had a high resolution of small fishbones (4 mm in length and 0.6 mm in diameter), which could satisfied the international food standard of standard for quick frozen fish fillets. Especially, it could be applied to efficiently distinguish small fishbones in frozen fish fillets.