Development of the real-time soil thermal property analyzer using CDMA

This paper introduces the real-time soil thermal property analyzer and temperature measurement system (STP) which is combined with radio telecommunication techniques. To measure the thermal parameters in real-time, the radio telecommunication technique uses the personal communication service (PCS) which is commercialized in Korea for the first time in the world by CDMA technology. The soil thermal property analyzer has an ability of measuring thermal resistivity, thermal diffusivity and thermal stability. To estimate the soil thermal properties, curve fitting algorithms by means of the least square method are used. Also, TCP/IP protocol and MTM are used to communicate a control center with the real-time STP installed at multiple locations along routes of the underground power cables under examination.