LONG RANGE RFID COMMUNICATIONS IN A PROCESS CONTROL SYSTEM

摘要

Methods and apparatus for long range RFID communications in a process control system are disclosed. An example apparatus includes a radio-frequency identification tag (300, 306) communicatively coupled to a field device (122) of a process control system. The radio-frequency identification tag has a processor (308), an onboard memory (310), and an antenna (312). The onboard memory stores data received from the field device to be communicated to a radio frequency identification reader. Power is to be provided to the processor and the onboard memory from control system power associated with the field device.