TEMPERATURE MEASUREMENT SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a temperature measurement system equipped with both a temperature sensor and a temperature measuring device as a new application of a radio tag. SOLUTION: This temperature measurement system comprises the temperature sensor 70 and the temperature measuring device 80. The temperature sensor 70 is configured as the radio tag having a resonant circuit with its resonance frequency varied depending on temperature, while the temperature measuring device 80 includes both a detecting means which detects resonance frequency of the resonant circuit by transmitting/receiving radio to/from the radio tag and a specifying means which specifies temperature of the radio tag on the basis of the detected resonance frequency. The temperature measuring device uses this resonance frequency to write the temperature value together with time information as history data into a memory 76 in the radio tag. COPYRIGHT: (C)2005,JPO&NCIPI