Sensors monitor the proximity of two OBJECTS BASED RFID

摘要

The invention relates to radio frequency identification (RFID). Its use gives an indication of proximity (eg, contact) of the two objects. To achieve this technical result items equipped with one of RFID tags, changes its response signal when approaching or removing the two objects together. The change may be expressed by the appearance / absence of a response signal RF tag due approaching / removing metal shield mounted on the second object. Interrogate the RFID tag, and on the basis of changes in the response signal from the RFID tag decide on the degree of proximity of the two objects.