埋設金属の探知用の送信信号の設定方法及びこの設定方法を用いた探知装置

Japanese Patent JP6437866

B2

PROBLEM TO BE SOLVED: To provide a transmission signal setting method for detecting a buried metal and a buried metal detection device using the setting method.SOLUTION: The transmission signal setting method for detecting a buried metal includes: sequentially changing frequencies of transmission signals for detection to transmit a detection signal to a buried metal for each frequency; measuring a current value of a transmission signal at an output end of a transmission-side unit; measuring intensity of a magnetic field generated by the transmission signal; recording the current value of the transmission signal and the intensity of the magnetic field measured for each frequency; correcting the measured intensity of the magnetic field by a reception sensitivity difference due to the frequency of the transmission signal; calculating a receivable distance for each frequency on the basis of the recorded current value of the transmission signal, the corrected intensity of the magnetic field, and the intensity of the magnetic field detectable by a reception-side unit; and setting the transmission-side unit, with a frequency when the receivable distance measured for each frequency respectively is maximized, as an optimal frequency of the transmission signal. When a plurality of frequencies, the measured receivable distances of which are maximal are acquired, the transmission-side unit is set, with a lowest frequency defined as the optimal frequency of the transmission signal.SELECTED DRAWING: Figure 5

Masaru Tsunazaki
Kubota

JP2015071894A

December 12, 2018

March 31, 2015

Click for automatic bibliography generation  

OSAKA GAS CO.,LTD.
Fujitecom Co., Ltd.

G01V3/08

JP2021289A
JP54060958A
JP62009286A
JP2015521410A

US20130287125

Achievement Taeko

Previous Patent: ヒータ

Next Patent: JPS6437867