IC697MEM717
IC697MEM717
1.3RFID技術(shù)的工作原理
RFID技術(shù)的基本工作原理并不復(fù)雜：標(biāo)簽進入磁場后，射頻前端發(fā)出的射頻信號，憑借感應(yīng)電流所獲得的能量發(fā)送出存儲在芯片中的產(chǎn)品信息（PassiveTag，無源標(biāo)簽或被動標(biāo)簽），或者主動發(fā)送某一頻率的信號（ActiveTag，有源標(biāo)簽或主動標(biāo)簽）;讀取信息并解碼后，送至RFID射頻識別控制單元進行有關(guān)數(shù)據(jù)處理。
2射頻識別節(jié)點的硬件設(shè)計
2.1射頻識別節(jié)點的結(jié)構(gòu)
如圖1為射頻識別節(jié)點的結(jié)構(gòu)：它包括：1）USB轉(zhuǎn)串口單元;2）RFID射頻識別控制單元;3）RFID讀頭前端單元;4）和無線射頻收發(fā)單元。射頻前端和標(biāo)簽間一般采用半雙工通信方式進行信息交換，同時通過耦合給無源應(yīng)答器提供能量和時序。在實際應(yīng)用中，可進一步通過Eth-ernet或WLAN等實現(xiàn)對物體識別信息的采集、處理及遠程傳送等管理功能。
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Extension base with 8 I/O slots and 1 power supply slot
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Mitsubishi: A1S68B-S1 (A1S68BS1)
Extension base with 8 I/O slots and 1 power supply slot
Enquire
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Mitsubishi: A1S68B-S1 (A1S68BS1)
Extension base with 8 I/O slots and 1 power supply slot
Enquire
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Mitsubishi: A1S68DAI (A1S68DAI)
D/A output module 8 channels 0-12000 0-20mA
Enquire
