Hello everyone,
I’m looking for recommendations on setting up an NFC system that meets the following requirements. I’m aiming to keep the project as cost-effective as possible, and I would like to utilize both NFC readers and chips. I’d appreciate any insights on suitable NFC reader types (e.g., NFC Type 4) as well as potential components or modules from STM32.
NFC Reader Requirements:
- Anticollision System: The NFC reader must support anticollision to handle multiple tags being present in the field at once. This is essential for our use case, where multiple tags may need to be read simultaneously.
- Inductive Change Detection: I’m interested in whether the reader can detect inductive changes (though I suspect this might be challenging since only one antenna or line is connected to the reader at a time, especially with multiplexing). To work around this, I’m considering the possibility of periodically switching between antennas and continuously scanning.
- Mobile Compatibility: The NFC reader should be able to read tags from a smartphone as well (e.g., using a mobile phone to read data from a sensor or similar). Alternatively, I would like the system to automatically open a webpage (e.g., showing measurement data) on the smartphone when scanned, provided the phone and system are connected to the same network.
NFC Chip Requirements:
- Multiple Simultaneous Reads/Writes: The most important requirement is that the NFC chip must support reading and writing to at least 6 chips "simultaneously", using either one or multiple antennas close to each other. This most likely means that the chip should have anticollision functionality.
- Mobile Compatibility: Just like the reader, the NFC chip should also be readable by a smartphone (for example, to display the chip's lifespan or data).
- Security: The NFC chip must be encrypted and secure to prevent unauthorized copying, modification, or writing to the chip. It should ensure the integrity and confidentiality of the data stored on it.
I would greatly appreciate your thoughts or any product recommendations that could help fulfill these requirements while keeping the cost low.
Thanks in advance for your help!
