Tham khảo tài liệu 'contemporary robotics - challenges and solutions part 9', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 13 HUNTER - HYBRID UNIFIED TRACKING ENVIRONMENT Aislan Gomide Foina and Francisco Javier Ramirez-Fernandez Universidade de São Paulo Brazil 1. Introduction Pervasive computing is an emerging paradigm used nowadays for very distinct applications. It is a model of human-computer interaction in which computer devices are embedded in an environment exchanging information between themselves and the human preset as well. It has been called Everyware Greenfied 2006 . Some of its application can go from smart homes for elderly people to automatic toll billing system for vehicles Xu 2008 . In many cases pervasive applications make use of standard technology called Radio Frequency Identification - RFID. RFID is an identification technology similar to barcode but instead of using laser beams and optical cameras to detect a printed code in a label it uses radio waves to communicate with a microchip built-in this same label and gets its identification wirelessly. Its application can vary as much as the pervasive computing application. In this book chapter a case study will be explored using pervasive computing principles and RFID technology to supervise a bulk cargo unloading process in an automated way to reduce fraud attempts and to increase the efficiency of the unloading place. Bulk cargo is a very common transport modality for ship commodities. Large bulk wagons and bulk ships can convey hundreds of thousand tons of loads. Thus this modality is used mostly by railway and port authorities. A regular bulk load process consists of three tasks 1 measurement of the weight without the product - empty weight 2 the load of the product in the transporter and 3 the measurement of the weight with the product loaded - full weight. The unload process is similar to the load processes but in the reverse order as seen in Fig. 1 1 Full weight measurement 2 cargo unload and 3 empty weight measurement. The difference between the first and the last weight measurements is the weight of the .
