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本专利综合运用了“朗伯—比尔定律”(光的吸收定律)和光的散射原理,当平行光线穿过其媒质(如水)时,该媒质里的悬浮微粒(如鱼、虾苗)就影响透过光强度,通过测试透过光强度的变化,则可计算出悬浮微粒(鱼、虾苗)的数目。如图所示,平行光光源(1)发出平行光,通过盛有鱼、虾苗和水的测试杯(2)(测试杯选用塑料、玻璃等透光性能好的材料),并由聚透镜(3)会聚于光电器件(4)上,由光电器件所产生的电信号经光电转换
This patent uses the Lambert-Beer law (the Law of Light Absorption) and the principle of light scattering, which affect the amount of suspended particles (fish and shrimp) in a medium as it passes through its medium (such as water) Through the light intensity, through the test through the light intensity changes, you can calculate the number of aerosols (fish, shrimp). As shown in the figure, the parallel light source (1) emits parallel light and passes through a test cup (2) containing fish, shrimp and water (the test cup is made of a material with good light transmission performance such as plastic and glass) (3) is converged on the optoelectronic device (4), the electrical signal generated by the optoelectronic device is photoelectrically converted