In this research, the portable leaf area meter is designed by combining microcontroller with light source LED and light sensor.
本研究利用微控制器作为控制单元，结合LED光源和传感器设计研制了一种便携式叶面积仪。
As a new light source, LED road lamps have not been tested by long practical application and related technology is far from mature.
作为新光源的LED道路灯具没有经过长期实际应用的检验，相关技术还未成熟。
LAPS array usually USES LED array as stimulative light source. LED has a large divergence Angle, so it is difficult to avoid some light irradiating on the non-sensitive area between sensitive areas.
由于阵列化laps一般采用LED阵列作为激励光源，而LED的发散角较大，所以在实际应用中难以避免有部分光线会照射在各敏感区域之间的非敏感区域上。
LAPS array usually USES LED array as stimulative light source. LED has a large divergence Angle, so it is difficult to avoid some light irradiating on the non-sensitive area between sensitive areas.
由于阵列化laps一般采用LED阵列作为激励光源，而LED的发散角较大，所以在实际应用中难以避免有部分光线会照射在各敏感区域之间的非敏感区域上。
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