I have a project requirement to use open protocol RFID tags to control doors handling of a light rail train (also called a tram in Europe). The application must sync and control 2 different doors: one at the train (normal train door opened by driver´s control) and other at the station, also called the platform door. Something as seen in this link here
The idea is, once the train stops at the correct position, when the train drivers commands the train doors to open, the platform door opens in sync. Once tha train driver commands the door to close, the platform door closes also in sync.
To do it, I´m looking for a Gen2 RFID Tag that is externally controlled by a switch or a power connection.
The idea behind the application is: An RFID once in front of its pair antenna sends its data (code). To sync doors, it need to "TURN ON" and "TURN OFF" the RFID reading by an external command to the tag. As the control is in the train, where the tag is located, then I need to control the TAG code transmission.
If I use a normal RFID in this application once the train approaches is position the RFID code is sent, the antenna captures it and command the platform doors to be open.
What I need is to sync the moment when the RFID code is sent with the train door command, so that when the train stops no code is sent (the tag is "off") and when the door is commanded to open it "turns on" the RFID that sends its code that will be interpreted and command the platform door to get opened.
RFID usage is a requirement, not an option.