避免光電倍增管在量測時產生飽和現象，本實驗透過修改暉光儀軟體之方式，使其具有自適應調節光電倍增管工作電壓之功能，以確保光電倍增管的運作皆在其線性區內，再者，實驗中所求得的光電倍增管各電壓線性區之線性方程式，將令暉光儀具有即時將光子計數值轉換為真實光功率值之功能；最後，為了避免光電倍增管受過溫或過電壓影響而損毀，軟體中亦加入安全判讀機制，在異常狀況發生時，暉光儀將及時切斷電源，以保護光電倍增管。實驗結果顯示，自適應多段增益調節功能確實可擴大光電倍增管的光強度量測範圍，其光功率輸出功能可大幅提升暉光儀的可用性。;In order to avoid the saturation of the photomultiplier tube during measurement, the paper made it possible for airglow instrument to adaptively adjust the operating voltage of the photomultiplier tube when encountering different light intensity to ensure that the operating is in the linear region. In addition, we made the instrument have function of immediately converting the photon count into optical power by the linear equation calculated by algorithm. Finally, we added a safe interpretation mechanism into software to prevent the photomultiplier tube from being damaged by overheating or overvoltage. The results appeared that the adaptive multi-stage gain adjustment function could indeed increase the measurement range of the photomultiplier tube.
