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Sustainable rfid solutions Part 3

Tham khảo tài liệu 'sustainable rfid solutions part 3', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Monitoring Cold Chain Logistics by Means of RFID 39 - Frozen is -25 C for ice cream -18 C for other foods and food ingredients. - Cold chill is 0 C to 1 C for fresh meat and poultry most dairy and meat-based provisions most vegetables and some fruit. - Medium chill is 5 C for some pastry-based products butters fats and cheeses. - Exotic chill is 10-15 C for potatoes eggs exotic fruit and bananas. EN 12380 1999 legislation demands class one temperature measurement for refrigerated food transport. Measurement has to be feasible in the range between -25 C up to 15 C with an accuracy 1 C and resolution 0.5 C CEN 1999 . It is not easy to maintain appropriate conditions over the whole chain negligence or mishandling in the logistic of perishable food products is very common including goods poorly or excessive cooled. Roy et al. 2006 analyzed the supply of fresh tomato in Japan and quantified product losses of 5 during transportation and distribution Roy et al. 2006 . Tanner and Amos 2003a and 2003b studied thermal variations during long distance transportation of fruits from New Zealand to Europe. The results showed that the products were out of the set-point more than 30 of the time with a significant variability both spatially across the width of the container as well as temporally along the trip. In those experiments monitoring was achieved by means of the installation of hundreds of wired sensors in a single container which makes this system architecture commercially unfeasible Tanner Amos 2003 . Global food safety policies concerning the cold chain have been stipulated by Governmental authorities with the aim of protecting the safety and quality of food. In the European Union Manufacturers distributors and other supply chain partners must follow the ATP Agreement on the international carriage of perishable foodstuff and on the special equipment to be used for such carriage UNECE 2003 . In the United States of America the HACCP Hazard Analysis and Critical Control .