射频识别RFID毕业论文中英文资料对照外文中英文翻译文献综述.doc

射频识别RFID毕业论文 中英文资料对照外文翻译文献综述 Shrouds of Time The history of RFID Introduction Many things are hidden in the shrouds of time. The task of tracing history and genealogy is arduous and challenging, but, ultimately, rewarding. Our past can open doors to our future. Whether we realize it or not, RFID (radio frequency identification) is an integral part of our life. RFID increases productivity and convenience. RFID is used for hundreds, if not thousands, of applications such as preventing theft of automobiles, collecting tolls without stopping, managing traffic, gaining entrance to buildings, automating parking, controlling access of vehicles to gated communities, corporate campuses and airports, dispensing goods, providing ski lift access, tracking library books, buying hamburgers, and the growing opportunity to track a wealth of assets in supply chain management. One can trace the ancestry of RFID back to the beginning of time. Science and religion agree that in the first few moments of creation there was electromagnetic energy. And God said, Let there be light, and there was light (Genesis 1). Before light, everything was formless and empty. Before anything else, there was electromagnetic energy. Scientific thinking summarizes the universe was created in an instant with a Big Bang. Scientists deduce all the four fundamental forces - gravity, electromagnetism, and the strong and weak nuclear forces - were unified. The first form in the universe was electromagnetic energy. During the first few seconds or so of the universe, protons, neutrons and electrons began formation when photons (the quantum element of electromagnetic energy) collided converting energy into mass. The electromagnetic remnant of the Big Bang survives today as a background microwave hiss. Why is this important, you might wonder? This energy is the source of RFID. It would take more than 14 billion years or so before we came along, discovered how to harness electromagnetic energy in the radio region