پاورپوینت کامل RFID Technology 36 اسلاید در PowerPoint

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پاورپوینت کامل RFID Technology 36 اسلاید در PowerPoint

اسلاید ۴: Three parts to an RFID implementationTag (Transponder)ReaderDatabase & softwareActive RFIDPassive RFIDTag Power SourceInternal to tagEnergy transferred using RF from readerTag BatteryYesNoRequired signal strengthVery LowVery HighRangeUp to 100mUp to 3-5m, usually lessMulti-tag reading1000’s of tags recognized – up to 100mphFew hundred within 3m of readerData StorageUp to 128 Kb or read/ write & search128 bytes of read/writeAn RFID tag is a microchip combined with an antenna in a compact package; the packaging is structured to allow the RFID tag to be attached to an object to be tracked. RFID stands for Radio Frequency Identification.The tags antenna picks up signals from an RFID reader or scanner and then returns the signal, usually with some additional data (like a unique serial number or other customized information).RFID tags can be very small – the size of a large rice grain. Others may be the size of a small paperback book.An RFID reader is a device that is used to interrogate an RFID tag. The reader has an antenna that emits radio waves; the tag responds by sending back its data.A number of factors can affect the distance at which a tag can be read (the read range). The frequency used for identification, the antenna gain, the orientation and polarization of the reader antenna and the transponder antenna, as well as the placement of the tag on the object to be identified will all have an impact on the RFID system’s read range.w ©

اسلاید ۵: Basic Operational PrinciplesNSTAGReaderReaderTAGBackscatterFar field (UHF, microwave): Use backscattering which means reflecting the carrier wave and putting a signal into that reflection. Absorption by non-conductive materials significant problem for microwave frequenciesInductive CouplingNear field (LF, HF): inductive coupling of tag to magnetic field circulating around antenna (like a transformer Varying magnetic flux induces current in tag. Modulate tag load to communicate with readerw ©

اسلاید ۶: RFID Applications w ©

اسلاید ۷: Human Trackingw ©

اسلاید ۸: Animals Trackingw ©

اسلاید ۹: Shops Securityw ©

اسلاید ۱۰: Doors and Garages Securityw ©

اسلاید ۱۱: Product Monitoring and Controlw ©

اسلاید ۱۲: Shoppingw ©

اسلاید ۱۳: w ©

اسلاید ۱۴: Electronic Passportw ©

اسلاید ۱۵: Contactless paymentw ©

اسلاید ۱۶: Civil liberties groups (among others) have become increasingly concerned about the use of RFIDs to track the movements of individuals. For example, passports will soon be required to contain some sort of RFID device to speed border crossings. Scanners placed throughout an airport, for example, could track the location of every passport over time, from the moment you left the parking lot to the moment you got on your plane. There are also concerns about the fact that, even after you leave the store, any RFID devices in the things you buy are still active. This means that a thief could walk past you in the mall and know exactly what you have in your bags, marking you as a potential victim. A thief could even circle your house with an RFID scanner and pull up data on what you have in your house before he robs it. Military hardware and even clothing make use of RFID tags to help track each item through the supply chain. Some analysts are concerned that, if there are particular items associated with high-level officers, roadside bombs could be set to go off when triggered by an RFID scan of cars going by.There was a recent report revealing clandestine tests at a Wal-Mart store where RFID tags wer