Experimental trial to detect medical engineering equipments in hospital by passive UHF RFID tag

A sort of medical engineering equipment like infusion pump and syringe driver are not enough in hospital at all times. Most of the equipments are kept in nurse station at ward to cope with unexpected medical trouble. The number of the equipments are over 40 at large scaled medical institution like a university hospital. The missed equipments are danger because the equipments can not be maintained periodically. Location of the equipments have to be discovered to maintain safety level of patient environment. Authors propose new system to detect the equipments in hospital by passive UHF RFID tag. In this paper, fundamental characteristics of the system are estimated.