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R88D-UP08HA AC200V 200W現(xiàn)有的RFID防碰撞算法都是基于TDMA算法，可劃分為Aloha防碰撞算法和基于二進制搜索BS(Binary search)算法兩大類。Aloha是一種隨機接入算法，這種算法多采取“標簽先發(fā)言”的方式，即標簽一旦進入閱讀器的閱讀區(qū)域就自動向閱讀器發(fā)送其自身的ID，隨即標簽和閱讀器間開始通信。在標簽發(fā)送數(shù)據(jù)的過程中，若有其他標簽也在發(fā)送數(shù)據(jù)，將發(fā)生信號重疊從而導致完全沖突或部分沖突，R88D-UP08HA AC200V 200W閱讀器檢測接收到的信號來判斷有無沖突。如果發(fā)生沖突，閱讀器將發(fā)送命令讓標簽停止發(fā)送，隨機等待一段時間后再重新發(fā)起查詢。該算法特點是：算法簡單、便于實現(xiàn)，適用于低成本RFID系統(tǒng)。但是由于該算法的時隙是隨機分配的，當大量標簽并存時，幀沖突嚴重。而基于BS算法是通過多次比較，不斷篩選出不同的標簽號，時分復用地進行讀寫器和射頻卡之間的信號交換，以一個獨特的序列號識別射頻卡為基礎。R88D-UP08HA AC200V 200W為了從一組射頻卡中選出其中的一個，讀寫器需要發(fā)出一個請求命令，有意識地將射頻卡序列號傳輸時的數(shù)據(jù)碰撞引導到讀寫器上，即讓讀寫器來判斷是否發(fā)生碰撞。如發(fā)生碰撞，則縮小范圍進行進一步搜索。這類算法雖然識別效率高，但是算法比較復雜，識別時間較長。本文在二進制防碰撞算法的基礎上提出一種改進的防碰撞算法。

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 R88D-UP08HA AC200V 200W
R88D-UP08V
R88D-UP12HA AC200V 400W
R88D-UP12LA AC100V 200W
R88D-UP12V
R88D-UP15LA AC100V 300W
R88D-UP20HA AC200V 750W
R88D-UT120H AC200V 5.0KW
R88D-UT24H AC200V 1.0KW
R88D-UT40H AC200V 1.5KW
R88D-UT40V
R88D-UT60V
R88D-UT80H AC200V 3.0KW
R88D-UT80V
R88D-WT01H
R88D-WT01HL
R88D-WT02H
R88D-WT02HL
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R88D-WT05H
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R88D-WT150H
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R88D-WT20H
R88D-WT30H
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R88D-WT60H
R88D-WT75H
R88D-WTA3H
R88D-WTA3HL
R88D-WTA5H
R88D-WTA5HL
R88M-H05030 AC50W
R88M-H10030 AC100W
R88M-H10030-B AC100W
R88M-H1K130 AC1100W
R88M-H1K130-B AC1100W
R88M-H20030 AC200W
R88M-H20030-B AC200W
R88M-H20030-G25BJS1
R88M-H30030 AC300W
R88M-H30030-B AC300W
R88M-H50030-B AC500W
R88M-H75030 AC750W
R88M-H75030-B AC750W
R88M-U03030HA
R88M-U03030HA-B
R88M-U03030HA-BS1
R88M-U03030HA-S1
R88M-U03030LA
R88M-U05030HA
R88M-U05030HA-B
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R88M-U10030HA
R88M-U10030HA-B
R88M-U10030HA-BS1
R88M-U10030HA-S1
R88M-U10030LA

R88D-UP08HA AC200V 200W
R88D-UP08V
R88D-UP12HA AC200V 400W
R88D-UP12LA AC100V 200W
R88D-UP12V
R88D-UP15LA AC100V 300W
R88D-UP20HA AC200V 750W
R88D-UT120H AC200V 5.0KW
R88D-UT24H AC200V 1.0KW
R88D-UT40H AC200V 1.5KW
R88D-UT40V
R88D-UT60V
R88D-UT80H AC200V 3.0KW
R88D-UT80V
R88D-WT01H
R88D-WT01HL
R88D-WT02H
R88D-WT02HL
R88D-WT04H
R88D-WT05H
R88D-WT08H
R88D-WT10H
R88D-WT150H
R88D-WT15H
R88D-WT20H
R88D-WT30H
R88D-WT50H
R88D-WT60H
R88D-WT75H
R88D-WTA3H
R88D-WTA3HL
R88D-WTA5H
R88D-WTA5HL
R88M-H05030 AC50W
R88M-H10030 AC100W
R88M-H10030-B AC100W
R88M-H1K130 AC1100W
R88M-H1K130-B AC1100W
R88M-H20030 AC200W
R88M-H20030-B AC200W
R88M-H20030-G25BJS1
R88M-H30030 AC300W
R88M-H30030-B AC300W
R88M-H50030-B AC500W
R88M-H75030 AC750W
R88M-H75030-B AC750W
R88M-U03030HA
R88M-U03030HA-B
R88M-U03030HA-BS1
R88M-U03030HA-S1
R88M-U03030LA
R88M-U05030HA
R88M-U05030HA-B
R88M-U05030HA-BS1
R88M-U05030HA-S1
R88M-U05030LA
R88M-U10030HA
R88M-U10030HA-B
R88M-U10030HA-BS1
R88M-U10030HA-S1
R88M-U10030LA