OPTICAL SIGNAL TRANSMITTING/RECEIVING DEVICE AND POWER CONVERSION EQUIPMENT

To provide an optical signal transmitting/receiving device and power conversion equipment enabling optical components thereof to be inspected more easily.SOLUTION: An optical signal transmitting/receiving device is provided, comprising: an optical transmission unit which transmitting an optical signal having a light emission period and a light extinction period, can set a normal light quantity period and a low-light quantity period having a lower light quantity than the normal light quantity period, in the light emission period; an optical reception unit receiving an optical signal and outputting a reception signal converted to an electric signal according to light emission amount of the optical signal; a light emission control unit controlling changeover of the light emission period and the light extinction period of the light signal and controlling the setting of the normal light quantity period and the low-light quantity period in the light emission period; and a light reception control unit determining degradation of at least the optical transmission unit or the light reception unit from a difference between a reception signal in a case that the low-light quantity period is determined as the light emission period and a reception signal in a case that the low-light quantity period is determined as the light extinction period.SELECTED DRAWING: Figure 1 【課題】より簡単に光部品の点検を行うことができる光信号送受信装置及び電力変換装置を提供する。【解決手段】発光期間と消光期間とを有する光信号を送信するとともに、発光期間において、通常光量期間と、通常光量期間よりも低い発光量の低光量期間と、を設定可能な光送信部と、光信号を受信し、光信号の発光量に応じた大きさの電気信号に変換した受信信号を出力する光受信部と、光信号の発光期間と消光期間との切り替えを制御するとともに、発光期間における通常光量期間と低光量期間との設定を制御する発光制御部と、低光量期間を発光期間と判別した場合の受信信号と、低光量期間を消光期間と判別した場合の受信信号と、の差から光送信部及び光受信部の少なくとも一方の劣化を判定する受光制御部と、を備えた光信号送受信装置が提供される。【選択図】図１