RADIO FREQUENCY IDENTIFICATION (RFID)
How RFID works.
- RFID is sytems provide the powerful technology for tracking the movement of goods through out the supply chain.
- RFID system use tiny tags with embedded microchips containing data about an item and its location to transmit radio signal over short distance to RFID readers.
- The reader unit consists of an antenna and radio transmitter with a decoding capability attached to a stationary or handhend device.
- The reader emits radio waves in ranges anywhere from one inch to hundred feet, depending on its power output, the radio frequency employed, and surrounding environmental condition.
- The reader captures data, decodes them, and sends them back over a wired or wireless network to a host computer for further processing.
WIRELESS SENSOR NETWORK
A WIRELESS SENSOR NETWORK
- Wireless sensor networks (WSNs) are ntwork of interconnected wireless devices that are embedded into the physical environment to provide measurements of many points over large spaces.
- These devices have built-in processing storage, and radio frequency sensors and antennas.
- They are linked into an interconnected network that routes the data they capture to a computer for analysis.
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