| 摘要 |
#CMT# #/CMT# The tag (1) has a temperature control circuit (3) has a capacitor (7) and a diode (8) connected with each other, where the circuit is connected to a transponder (2). The diode is connected to a terminal (7.1, 7.2) of the capacitor in an inverse manner. The capacitor is charged with a given voltage (VCHARGE) during initialization of the tag so that the voltage is discharged at constant current in the diode during the time. The transponder transmits a signal to a reader (13), where signal is relative to evolution of the voltage observable at the terminal according to time. #CMT# : #/CMT# An independent claim is also included for a method for controlling temperature in which radio frequency identification tag is implemented. #CMT#USE : #/CMT# Radio frequency identification tag for being stuck to a product e.g. medicines, iced product, deep-frozen product, chemical product or biological product, to monitor and control storage temperature of the product, for storing or transporting products before being maintained at cryogenic temperature (all claimed). #CMT#ADVANTAGE : #/CMT# The tag permits to detect the rupture of the temperature in a robust and inexpensive manner, thus permitting to maintain freshness and chemical properties of the product. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a block diagram illustrating radio frequency identification tag exchanging signals with a reader.'(Drawing includes non-English language text)' VCHARGE : Voltage 1 : Radiofrequency identification tag 2 : Transponder 3 : Control circuit 7 : Capacitor 7.1, 7.2 : Terminal 8 : Diode 13 : Reader. |
