最近很好奇,想知道各种公交卡的工作原理是什么呢,是根据特定代码或是公式记录在芯片卡内,以实现和各种

2025年02月27日 11:53
有2个网友回答
网友(1):

说的应该时公交IC卡吧

IC卡工作的基本原理是:射频读写器向IC卡发一组固定频率的电磁波,卡片内有一个LC串联谐振电路,其频率与读写器发射的频率相同,这样在电磁波激励下,LC谐振电路产生共振,从而使电容内有了电荷;在这个电容的另一端,接有一个单向导通的电子泵,将电容内的电荷送到另一个电容内存储,当所积累的电荷达到2V时,此电容可作为电源为其它电路提供工作电压,将卡内数据发射出去或接受读写器的数据。

(百度百科:http://baike.baidu.com/link?url=-nJexKZDz7N-LO5XR5uaTZgPYD1Gg1Cw64E6HpvAcDZEmGZkmzVvEgjszTyqPFKgXKntk3hSzeVAVHEXIB4Ftq)

网友(2):

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