HYDROGEN SULFIDE CONCENTRATION ESTIMATION DEVICE, AND DETECTOR OF FAILURE RISK DUE TO HYDROGEN SULFIDE

• Main Authors: NAKAJIMA SATOSHI, AZUMA YUGO, NOGUCHI YUYA, FUKUNAGA TETSUYA, TSUBOTA KOJI, YAMADA YOJI, UTSUNOMIYA RISA, SENBAYASHI SATORU, DOI EIJI
• Format: Patent
• Language: English; Japanese
• Published: 20.04.2022
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

To provide a hydrogen sulfide concentration estimation device capable of automatically and constantly monitoring a hydrogen sulfide concentration in an environment where electrical equipment is installed, and to provide a detector of a failure risk due to hydrogen sulfide that automatically and constantly monitors the progress of corrosion due to hydrogen sulfide and detects a risk that a failure occurs on a printed circuit board or the like due to corrosion.SOLUTION: A hydrogen sulfide concentration estimation device includes: a light reflection part 114 on which silver Ag is disposed; a light-emitting part 102 for irradiating the silver with light; a light detector 106 for detecting light reflected by the silver; a measuring terminal for generating a voltage according to current flowing in the light detector, in a state that the silver is irradiated with light from the light-emitting part; a measuring part for measuring a voltage of the measuring terminal; and a calculation part for calculating an estimated value of a hydrogen sulfide concentration in the peripheral environment of the light reflection part, on the basis of the voltage measured by the measuring part. Accordingly, the hydrogen sulfide concentration in the environment can be automatically and constantly monitored.SELECTED DRAWING: Figure 1 【課題】電気機器が設置された環境中の硫化水素濃度を自動的に常時監視できる硫化水素濃度推定装置、及び、硫化水素による腐食の進行状況を自動的に常時監視し、腐食によりプリント基板等に不具合が発生するリスクを検出できる硫化水素による不具合リスク検出装置を提供する。【解決手段】硫化水素濃度推定装置は、銀Ａｇが配置された光反射部１１４と、銀に光を照射する発光部１０２と、銀により反射された光を検知する光検知部１０６と、銀に発光部から光を照射した状態で、光検知部に流れる電流に応じた電圧を発生する測定端子と、測定端子の電圧を測定する測定部と、測定部により測定された電圧に基づき、光反射部の周囲環境の硫化水素濃度の推定値を算出する算出部とを含む。これにより、環境中の硫化水素濃度を自動的に常時監視できる。【選択図】図１