Title :
Remote temperature sensing system using reverberated magnetic flux
Author :
Kim, Y.H. ; Hashi, S. ; Ishiyama, K. ; Arai, K.I. ; Inoue, M.
Author_Institution :
Dept. of Electr. Eng., Pukyong Univ., Pusan, South Korea
fDate :
9/1/2000 12:00:00 AM
Abstract :
A remote temperature sensing system was investigated. The system can measure the temperature by applying an external magnetic flux to the sensor and by receiving a flux at the resonant frequency corresponding to the temperature at the sensor. The sensor does not need a power supply within it and is only composed of a temperature sensitive ferrite core and a wound coil. The inductance of the core varied from about 8-18 mH in the temperature region of 35-55°C. The induced voltage, ΔV by the sensor was about 10 mV for a 260 mm length between the transmitter and receiver. The system was successfully operated in our investigation
Keywords :
ferrite devices; magnetic cores; magnetic flux; magnetic sensors; remote sensing; temperature measurement; temperature sensors; 35 to 55 C; Curie temperature; core inductance; external magnetic flux; induced voltage; remote temperature sensing system; resonant frequency; reverberated magnetic flux; temperature sensitive ferrite core; wound coil; Ferrites; Frequency measurement; Magnetic cores; Magnetic flux; Magnetic sensors; Power supplies; Resonant frequency; Sensor systems; Temperature measurement; Temperature sensors;
Journal_Title :
Magnetics, IEEE Transactions on
