NFC键入b卡没有得到任何的NFC应用检测（如：nfctaginfo） [英] NFC typeb card not getting detected by any NFC application (like:nfctaginfo)

问题描述

我的工作NEXSUS-S_4.0.4，需要阅读的TypeB（ISO 14443）卡上的数据并显示一些信息存储在card.But没有让我的应用程序或任何其他来自安卓市场下载检测到我的卡（如：恩智浦NFC标签的信息）。所有其他卡都工作正常。

I am working on NEXSUS-S_4.0.4,need to read typeB(ISO 14443) card's data and display some info stored on card.But my card is not getting detected on my application or on any other downloaded from android-market(like:NFC tag info from NXP). All other card are working fine..

我感谢你在前进，问候

推荐答案

这可能仅仅是可能不会有很好的调节您要读取标签的天线。 （ISO14443-B是并不常见...）

That could simply be the antenna which may not have a good tuning for the tags you want to read. (ISO14443-B aren't that common...)

要确保它不是一个软件问题，您可以尝试更换天线。要做到这一点：

To be sure that it is not a software problem you can try to replace the antenna. To do so:

• 删除了Nexus-S的后盖。您应该看到天线和接触到NFC daugterboard。

• Remove the back-cover of the Nexus-S. You should see the antenna and the contacts to the NFC daugterboard.

取一张隔离线，大约长约25cm。使两个绕组，直径约4〜6厘米，其连接至天线引脚。

Take a piece of isolated wire, approx 25cm long. Make two windings, diameter around 4 to 6 cm and connect this to the antenna pins.

尝试阅读你的B-标签。目前这款手机应该能够检测到标签，并通过IsoDep IO应该是可能的。

Try to read your B-tag. The phone should now detect the tag and IO via IsoDep should be possible.

此简易天线将很可能工作优于内置之一，因为内置在一个非常接近这降低天线性能的其他金属部件。

This improvised antenna will very likely work better than the built-in one because the built-in one is very close to other metal parts which degrade the antenna-performance.

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