To rapidly probe continuously the soil nature or the like of the ground with high resolution with moving over a broad range.
In this probe method, a transmission/reception boom 2 mounted with a transmission/reception part is supported by a support machine 4 inside an automobile 1 and a support strut 3, the transmission/reception part and an EM transmitter/receiver 6 inside the automobile 1 are connected trough a cable 5, and a personal computer 7 is connected to the EM transmitter/receiver 6. The transmission/reception part comprises a transmission/ reception coil, an amplifier, a filter, resonance switch and capacitor, or the like, while the EM transmitter/receiver 6 comprises a detection circuit, a DC conversion circuit, a supply circuit of stable large current, or the like. As traveling the automobile 1, the EM transmitter/ receiver 6 transmits/receives a magnetic field with sequentially changing a measurement frequency. The EM transmitter/receiver 6 detects respective component values or the like of the received magnetic field, and the personal computer 7 calculates and displays a specific resistance or the like of the ground. The probe method adopts a support structure capable of arbitrarily deciding a position and a direction of the transmission/reception boom 2.
TADA TAKASHI
SEOKA MASAHIKO
KATAYAMA TATSUO
TANAKA MITSURU
OZAKI KATSUYUKI
ORI TOKITAKA
KANDEN KOGYO INC
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