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RFID and Wireless Sensor Networks
- 1. Presented By: Devika RoyChoudhury (20165009) Dinesh Gosavi (20165010) Jui Shah (20165015) Kartik Kachhadiya (20165018) Twinkle Mehta (20165042)
- 2. RFID (RadioFrequency IDentification) and Wireless sensor network (WSN) are two important wireless technologies that have wide variety of applications and provide unlimited future potentials RFID is used to detect presence and location of objects while WSN is used to sense and monitor the environment. The basic idea of integration of RFID with WSN is to connect the RFID reader to an RF transceiver, which has routing function and can forward information to and from other readers. Users are able to read tags from distance 100-200m that is well beyond normal range of readers.
- 3. Radio-frequency identification(RFID) uses electro- magnetic fields to automatically identify and track tags attached to objects. The tags contain electronically stored information. Passive tags collect energy from a nearby RFID reader’s interrogating radio waves. Active tags have a local power source such as a battery and may operate at hundreds of meters from the RFID reader. RFID tags are used in many industries, for example, an RFID tag attached to an automobile during production can be used to track its progress through the assembly line; RFID-tagged pharmaceuticals can be tracked through warehouses; and implanting RFID microchips in livestock and pets allows positive identification of animals.
- 4. A RFIDsystem is made up of two parts: a tag or label and a reader. RFID tags or labels are embedded with a transmitter and a receiver. The RFID component on the tags have two parts: a microchip that stores and processes information, and an antenna to receive and transmit a signal. The tag contains the specific serial number for one specific object.
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- 12. RFID Barcode Read Rate Multiple(>100) tags can be read simultaneously. Tags can only be read manually, one at a time. Line of Sight Items can be oriented in any direction, as long as it is in the read range, and direct line of sight is never required. Scanner must physically see each item directly to scan, and items must be oriented in a very specific manner. Human Capital Virtually none. Once up and running, the system is completely automated. Large requirements. Labourers must scan each tag. Read/Write Capability More than just reading. Ability to read, write, modify, and update. Read only. Ability to read items and nothing else. Durability High. Much better protected, and can even be internally attached, so it can be read in very harsh environments. Low. Easily damaged or removed; cannot be read if dirty or greasy. Security High. Difficult to replicate. Data can be encrypted, password protected, or include a “kill” feature to remove data permanently, so information stored is much more secure. Low. Much easier to reproduce or counterfeit.
- 13. The consumersare looking for the systems that are cheap, consume less power, and having high level of security and safety features. The use of semi-passive or active RFID technology in combination with WSN has a promising future since reading range becomes much larger. RFID and WSN technology are the measures for the future of Ubiquitous Computing. The field is still in its infancy and along with the demand of the applications, we are definitely to see the allround improvement in the sensing, transmission and detection, networking, control theory, software, and middleware.