RFID ne NFC gyinapɛn ne dwumadie a wɔtaa de di dwuma .

RFID ne NFC wɔ nsɛdi pii. Wɔ application ne frequency bands akyi no, wɔn nso wɔ nnwuma gyinapɛn pii. Ɛnnɛ, mede gyinapɛn protocol ahorow abien a wɔtaa yɛ no bɛba.

RFID: .

Nnipa pii nya wɔn RFID ho adwene fi IBM dawurubɔ bi mu: ɔbabun bi a ɔretotɔ nneɛma wɔ aguadidan kɛse bi mu hyɛ ne trench coat no ma na ɔkɔ checkout counter kɔgye ne sika a ɛho nhia sɛ otua. Saa dawurubɔ yi kyerɛ nkurɔfo sɛnea wɔde RFID di dwuma wɔ da biara da asetra mu pefee.

RFID (radio frequency identification) yɛ mfiridwuma a ɛyɛ adwuma ankasa a ɛde radio asorɔkye di dwuma ma nkitahodi. Nnyinasosɛm titiriw ne sɛ wobenya nneɛma a wɔde agyiraehyɛde ahyɛ mu no ho nkyerɛkyerɛmu a ɛyɛ adwuma ara kwa denam data nkitahodi a ɛda akenkan ti no ne tag a ɛbata ade no ho denam electromagnetic coupling anaasɛ inductive coupling ntam no so. Automatic recognition kyerɛ sɛ wɔde afiri pɔtee bi a ɛma wohu ade di dwuma, denam nneɛma a wɔakyerɛ ne afiri a wɔde hu ade no ntam a ɛbɛn so, nya nneɛma a wɔakyerɛ no ho nsɛm a ɛfa ho no ankasa, na ɛma kɔmputa a wɔde di dwuma wɔ akyi no ho nhyehyɛe a wɔde bewie akyi a ɛfa ho-a wɔde di dwuma wɔ mfiridwuma mu no.

RFID frequency bands titiriw ne: 125kHz, 134.2kHz, 13.56MHz, 860-960MHz, 2.45GHz ne 5.8GHz. RFID nhyehyeɛ a ɛwɔ adwumayɛ frequencies ahodoɔ no wɔ adwumayɛ kwan ahodoɔ ne application field ahodoɔ. Wɔde low frequency band (LF, 125KHz, 134.2kHz) RFID nhyehyɛe no di dwuma titiriw ma mmoa a wɔde hu ne adwumayɛbea ho nsɛm a wonya. RFID nhyehyɛe mfiridwuma a ɛwɔ frequency a ɛkorɔn (HF, 13.56MHz) no ayɛ nea ɛho akokwaw kakra, a wɔde di dwuma kɛse wɔ akwan a wɔfa so kɔ hɔ, akwantu a nyansa wom ne nneɛma afoforo mu. LF ne HF frequency band yɛ adwuma wɔ inductively coupled mode mu, mpɛn pii no ɛwɔ adwumayɛ kwan ketewaa bi. Adwumayɛ kwan a etu mpɔn a ɛlɛtrɔnik tags wɔ ultra-high frequency band (UHF, 860-960 MHz) RFID nhyehyɛe no betumi adu mita 3-6, a ɛfata ma nneɛma a wɔde kɔ, nneɛma a wɔde ma ne afuw afoforo. Wɔde microwave frequency bands (2.45GHz ne 5.8GHz) di dwuma wɔ ahina no sohwɛ ne akwan akɛse so tow a wɔboaboa ano. UHF ne microwave frequency bands yɛ adwuma wɔ electromagnetic coupling mode mu, a ɛyɛ adwuma tenten kakra.

NFC: .

NFC gyina hɔ ma nea ɛbɛn afuw mu nkitahodi mfiridwuma. Philips ne Sony na wɔyɛɛ NFC, na ɛyɛ nkitahodi a enni nkitahodi ne nkitahodi mfiridwuma a ɛma wotumi di nkitaho wɔ abɔnten so wireless ntam wɔ mobile mfiri, consumer electronics, PCs ne smart control nnwinnade ntam. NFC de ano aduru a ɛyɛ mmerɛw, a wɔde ka wɔn ho-a ɛma adetɔfo tumi sesa nsɛm, nya nsɛm ne nnwuma wɔ ɔkwan a ɛyɛ mmerɛw na ɛyɛ mmerɛw so. NFC no gyina RFID so, NFC nyɛ soronko koraa wɔ RFID ho wɔ ne su mu, egyina sɛnkyerɛnne a ɛkɔ nneɛma abien ntam a ɛbɛn asase ho beae no so.