GAS MEASURING DEVICE AND GAS CONCENTRATION VISUALIZATION SYSTEM, AND MONITORING METHOD FOR EXCAVATION SITE

PROBLEM TO BE SOLVED: To provide means capable of specifying a gas generation place in an excavation site in three dimensions with simple constitution.SOLUTION: There is provided a gas measuring device for detecting a gas being generated in an excavation site, the gas measuring device comprising at...

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Hauptverfasser: NAGO MAKIHITO, MOTOJIMA TAKAYUKI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide means capable of specifying a gas generation place in an excavation site in three dimensions with simple constitution.SOLUTION: There is provided a gas measuring device for detecting a gas being generated in an excavation site, the gas measuring device comprising at least: a laser type gas sensor, the gas sensor being capable of measuring a cumulative concentration of the gas up to a reflective surface of a laser or a gas concentration on the reflective surface; a distance meter capable of measuring the distance up to the reflective surface; a first axis of rotation enabling the gas sensor and the distance meter to rotate to be raised or fallen down and a second axis of rotation enabling the first axis of rotation to rotate in a direction orthogonal to the first axis of rotation in plan view. Then a three-dimensional gas concentration distribution map is generated by totaling angle of rotation of the first axis of rotation and the second axis of rotation, and measured values of the gas sensor and distance meter by an information processing apparatus.SELECTED DRAWING: Figure 1 【課題】掘削現場におけるガスの発生箇所を、簡易な構成で、かつ立体的に特定することが可能な手段を提供する。【解決手段】掘削現場でのガスの発生を検知するためのガス計測装置であって、レーザー型のガスセンサであって、該レーザーの反射面までのガスの累積濃度、または前記反射面でのガス濃度を測定可能な、ガスセンサと、前記反射面までの距離を計測可能な、距離計と、前記ガスセンサおよび距離計を、起立または倒伏するように回転自在とする、第1の回転軸と、平面視して、前記第1の回転軸と直交する方向に、該第1の回転軸を回転自在とする、第2の回転軸と、を少なくとも備える。そして、前記第1の回転軸および第2の回転軸の回転角度、ならびに、前記ガスセンサおよび距離計の測定値を情報処理装置で集計して、三次元状のガス濃度分布図を生成する。【選択図】図1