有没有人对现实环境中的低功耗卡检测功能有很好的经验？

嗨约瑟夫，
 
我相信所有的读者都准备好检测一个四分之一信用卡形状因子的标签，其天线根据NFC / RFID标准/标准调整。你指的是哪种类型的Reader / Tag？
您的第二点是有点通用的，请您澄清您的请求和设置？
谢谢



以下为原文




Hi Joseph,

I beleive that all the readers are ready to detect a tag with a quarter size of a credit card form factor with an antenna tuned  according to NFC/RFID standart/norma. Which type of pair Reader /Tag do you refer to?
You second point is a bit generic can you please clarify your request and your setup?
Thank

彼得，嗨，
谢谢回复。我有ST25R3911B-DISCO和X-NUCLEO-NFC05A1板。我将尝试不同的设置。 GUI也很有用。



以下为原文




Hi Peter,
Thanks for the reply. I have the ST25R3911B-DISCO and X-NUCLEO-NFC05A1 boards. I will experiment with different setup. The GUI is also useful.

嗨约瑟夫，
ST25R3911B具有一些内置功能，可以克服唤醒模式下的环境变化。
例如，自动平均可用于过滤缓慢变化的影响，如温度变化或湿度变化。只会识别标签或手机失谐等“快速”变化。
增量窗口是另一种设置，可以更改唤醒功能的灵敏度。它允许设置参考值周围的范围，不触发中断。
中断也可以由在相同频率范围内工作的另一个设备触发。 BLE或WIFI器件的频率差异太大，无法在IC的输入引脚上产生幅度变化。同时主动发出13.56MHz的HF场的电话将干扰感应唤醒脉冲，因此当在更近的位置激活时也会触发中断。
BR Travis



以下为原文




Hi Joseph,
The ST25R3911B has some features build in to overcome environmental changes in wake-up mode.
Automatic Averaging for example can be used to filter slow changing effects like temperature change or changing humidity. Only 'fast' changes like detuning by a tag or phone will be recognized.
The delta-window is another setting that changes the sensitivity of the wake-up feature. It allows to set a range around the reference value, where no interrupt is triggered.
An interrupt can also be triggered by another device which operates at the same frequency range. A BLE or WIFI device is too different in terms of frequency to generate an amplitude change on the IC's input pins. A phone  which also sends out actively an HF field @ 13.56MHz will interfere with the inductive wake-up pulse and therefore also trigger an interrupt when being active in closer proximity.
BR Travis