Green blooms Measurement Method to be placed underwater

The present invention relates to a method, which is performed by a computer to place a plurality of measurement module units (100) provided with a light source unit (110) and a light reception unit (120), under the water vertically apart from each other, and measure an algal bloom concentration through all the measurement module units (100), while controlling each of the measurement module units through a light source control unit (200), an optical signal measurement unit (300) and an optical signal analysis unit (400). The method includes: a step (A1) in which in a state in which power for all the light source units (110) is cut off by the light source control unit (200), the optical signal measurement unit (300) measures signals from all the light reception units (120), thereby measuring the aggregate of algal bloom signals caused by natural light; a step (A2) in which in a state in which the power for all the light source units (110) is being supplied by the light source control unit (200), the optical signal measurement unit (300) measures signals from all the light reception units (120), thereby measuring the aggregate of all the algal bloom signals caused by natural light and measurement light; a step (A3) in which the optical signal analysis unit (400) deducts the aggregate of algal bloom signals measured in the step (A1) from the aggregate of algal bloom signals measured in the step (A2), thereby calculating only the algal bloom signal caused by the measurement light; and a step (A4) in which the optical signal analysis unit (400) converts the algal bloom signal calculated in the step (A3) into an algal bloom concentration signal. Therefore, the present invention is capable of properly measuring algal blooms through simultaneous measurement and sequential measurement. 본 발명은 컴퓨터에 의해 수행되며, 광원부(110)와 수광부(120)를 갖는 복수의 측정 모듈부(100)를 수심에 상하 이격배치하고, 광원 제어부(200), 광신호 측정부(300) 및 광신호 분석부(400)가 각 측정 모듈부를 제어하면서, 모든 측정 모듈부(100)에서 동시에 녹조 농도를 측정하는 방법으로서, 광원 제어부(200)가 모든 광원부(110)의 전원을 차단한 상태에서, 광신호 측정부(300)가 모든 수광부(120)의 신호를 측정하여, 자연광에 의한 녹조신호의 합을 측정하는 A1 단계; 광원 제어부(200)가 모든 광원부(110)의 전원을 공급한 상태에서, 광신호 측정부(300)가 모든 수광부(120)의 신호를 측정하여, 자연광 및 측정광에 의한 모든 녹조신호의 합을 측정하는 A2 단계; 광신호 분석부(400)가 A2 단계에서 측정된 녹조신호 합에서 A1 단계에서 측정된 녹조신호 합을 공제하여, 측정광에 의한 녹조신호만을 산출하는 A3 단계; 및 광신호 분석부(400)가 A3 단계에서 산출된 녹조신호를 녹조 농도신호로 변환하는 A4 단계를 포함하는 것을 특징으로 하는 수심형 녹조 측정방법이다.