RFID Elektronik Lebel Sip Riveal Sikret

Long jenerol, ol ilektronik tag oli gat wan tag spesifik sip mo wan tag antena. oli yusum sip ia blong kipim ol data blong ol samting, mo oli yusum antena blong transmitim mo kasem ol wev blong radio. Sip blong ol ilektronik tag i smol tumas mo jenerol i no bitim 0 35m; Saes blong wan antena i jenerol bigwan bitim hemia blong wan sip, mo sep blong antena i rileit long opereting frikwensi, etc. Saes blong enkapsulet ilektronik lebol i save smol olsem 2mm o i bigwan olsem wan ID kad we i stap long ples ia.

 

Namba wan, i gat sip. Straksa bilong ol ilektronik tag sip long ol narapela narapela frikwensi ben i wankain olsem RF front-en/analog fran-en, CPU o lojik kontrol yunit, memori na ol narapela modules{{3} RF fran-en ol i yusim moa yet long stretim na senisim ol RF signal bilong stretim na senisim ol RF signal; CPU i save yusim moa yet long enkodim/dikoding dijitel signal na prosesim ol anti-kolisen protokol; Memori i save yusim long putim infomesen, olsem RAM, EEPROM, na ol narapela samting{{6}…

 

RF front-end i save kisim karent long tag antena na i wok olsem pawa saplai i go long sip bihain long stretim na stebilisesen. Disain bilong RF front-en i mas tingim gut dispela hevi i wankain wantaim antena, gutpela wok bilong pawa na voltej, na kompatibiliti isu wantaim ol narapela narapela data modulesen i kam long rida na raita{3}} Long oda long apim mak bilong data modulations long rida na raita{3}} Long oda long kisim ol narapela narapela data modulesen. i go antap.

 

Microprocessors are used to process and perform operations on digital signals, such as reading and writing to memory. The program module is written into the ROM in the form of code and has already been written into the chip during the chip production phase. For baseband signal coding (digital modulation), there are several common coding methods as follows: NRZ (reverse non return to zero) coding, Manchester coding, unipolar coding, Miller koding, etc.

 

Ol data namel long tag na rida/raita i kamap long tupela stet: 0 na 1, i makim long skwea wev fom bilong wanpela lektrik puls signal. Frekwensi ben i stap long en em DC o low-frikwensi, ol i kolim beisben signal, we i save kalap long ol hai-frequen long ol hai-frekwensi long ol hai-frekwensi long ol hai-frekwensi long ol hai-frekwensi long ol hai-frekwensi long ol hai-frequen long ol ilektronik tag, dijitel besben signal i mas go insait transmitim, we ol i kolim kari. Wok bilong tanim ol beisben dijitel signal i go long ol hai-frikwensi signal long transmittinging end ol i kolim modulesen{{8}” Long taim bilong kisim, proses bilong tanim ol hai-frikwensi signal i go long besben dijitel signal ol i kolim demodulation' i kolim wanpela redio freeclex' i save kamap olsem wanpela redio freeclement' ol i kolim."

 

Neks em RF front-end bilong ilektronik tag sip, we i save stap olsem hap bilong ilektronik tag sip na konektim ilektronik tag antena long dijitel seket hap bilong sip{{1} Ol data i kam long lojik kontrol yunit insait long sip i ken lodim tasol i go long antena bihain long RF fran-en i bin senisim; Demodulesen yunit i gat wok long brukim dispela mak bilong senis bilong kisim namba wan mak; Voltej regulesen yunit i save yusim moa yet long tanim RF signal ol i kisim long rida i kamap pawa saplai, na mekim gutpela pawa saplai long rot bilong voltej stebilis seket.

 

RF intafes seksen i gat bikpela hap bilong kisim, wanpela seksen bilong transmitim, na wanpela komon seket seksen.

(1) Risivim pat. Bikpela wok bilong seksen bilong kisim em long daunim mak bilong amplitude modulet signal ol i kisim long antena, kisim bek dijitel besben signal long en, na bihain salim i go long kontrol seksen bilong dikoding prosesing{{2} Hap wok bilong envelop i gat envelop long en, em i mekim wok bilong envelop long envelop na wanpela diteksen seket i seket i seket i bilong mekim wok bilong painim seket bilong envelop na wanpela deteksen seket i seket bilong . Ol hai-frikwensi signal, muvim ol i go long frikwensi ben i go long besben{{5} Envelop jeneresen seket i gat bikpela komposed long ol nonlinear komponen na ol low-pass filta{{7} Dispela diteksen seket i gat bikpela hap bilong wanpela bandpas filta na wanpela volteji kompereta i go aut long . karia wev, i mekem se signal kev i "smut". Afta, signal we oli filterem i pas tru long wan voltej kompereta blong putumbak orijinol dijitol signal.

 

(2) Send seksen. Bikpela wok bilong transmisin seksen em long mekim ASK amplitude modulesen long dijitel enkodim signal we kontrol seksen i prosesim, amplifaim em, salim i go long antena end, na bihain salim i go long rida/raita{2}} Em i bikpela samting bilong ASK modulesen seket na amplifaia bilong .

When an electronic tag transmits information to a reading and writing device, its encoding/decoding circuit sends the encoded data to the RF interface, and the modulation circuit then performs ASK modulation on it. The reverse modulation of ASK adopts load modulation, which changes the amplitude of the transmitted signal by changing the size of the antenna load. The digital signal is connected to a nonlinear component circuit, and ol senis senis bilong ol bikpela na daunbilo level bilong en inap long kontrolim koneksen o katim koneksen bilong ol paralel lod insait long seket, na long dispela rot senisim sais bilong antena lod long senisim amplitude bilong enkoded data{{2} Tasol, bikos long liklik pawa bilong moduleted ASK signal, em i no inap inapim ol transmisin rikwaemen pastaim long ol i salim i go long ol transmisin rikwaemen bipo, ASK signal i mas salim i go long ol transmisin rikwaemen pastaim long ol i salim i go long ASK i go long ASK i go long ASK i go long ASK i go long en. rida/raita.

 

(3) Komon seket pat. komon seket pat i gat pawa jeneresen seket, limitim seket, na reset seket, na ol narapela samting.

Due to the induction of an alternating signal (alternating voltage source) from the RF field at both ends of the antenna, a rectification and filtering circuit is needed to convert it into a DC power supply. Due to the requirement that the circuit inside the electronic tag not only requires the power supply voltage to be a DC source, but also requires that the working voltage must not exceed the breakdown voltage of MOS ol transistor, ol transistor, na ol narapela divais, sapos nogat em i ken kamapim bagarap long divais. Bilong dipen tasol long rektifikesen na filtering seket i no inap senisim voltej long tupela arere bilong antena i go long voltej veliu ol i nidim, olsem na em i mas kamapim wanpela limiting modul.

 

The functions of the reset signal generation circuit are divided into two types: power on reset and power off reset. Firstly, a reference value should be set for the voltage, which is usually the voltage value for stable operation of the circuit. When the power supply voltage rises, if it is still less than the reference value, the reset signal will still be at a low level; If the power supply voltage rises above the reference value, the reset signal jumps to a high level. This is the power on reset signal, which sets the initial value for the digital circuit to avoid logical confusion. At the same time, it can also give the entire system a stable time to ensure that the energy coupled to both ends of the antenna has reached relative stability. When the power supply voltage decreases, if it is greater than the refrens veliu, reset signal i antap; Sapos em i go daun long liklik mak bilong refrens veliu, pawa signal i kalap i go daun, we em i pawa-of reset signal. Em i wanpela protektiv meja ol i kisim agensim ol situesen ol i no tingim we inap kamap insait long sistem (olsem pawa i feil wantu tasol long taim bilong operesen).

 

Wantaim bikpela na stebiliti bilong RFID teknoloji, ol RFID prodak i wok long kamap nating, na RFID maket i wok long pulap isi isi. RFID sip tag bilong ol long ritel, indastriel, medikel, ami ikwipmen, hotel linen, wasim ol diwai na ol narapela fil. RFID chip i gat kain kain aplikesen senario olsem? Inap tru, prais bilong ol RFID chips i save senis bihainim wanem kain na aplikesen bilong lebol. Las tru, em i gutpela long toktok long spesifik prais bilong prodak wantaim kampani bilong wokim "Sintek".