植物有效生长波段光照检测设备设计

The Design of Light Detection Equipment Separating Band for Plants Growing Effectively

光照是影响光合作用最主要的因素,而植物对于自然光的吸收是具有选择性的,只有特定波段的光谱能被吸收利用。为实现对植物光合作用有效光照范围的精确测量以及数据的实时获取与处理,设计了一种适于农业生产使用、能精确检测植物光合作用有效波段的光照检测设备。设备以单片机为核心,采用定滤光片分波段滤光的方式对光照传感器进行修正,实现了对植物在光合作用中所需光因子强度的测量;同时,支持以RS232串口数据传输、SD卡现场数据存储的数据通信和存储等功能。实验证明,本设计可实现上述功能,检测误差在5%之内,满足使用要求。

The most significant factor influencing photosynthesis lies in illumination,while plants absorb natural daylight selectively,which means only lights with specific wave bands are available for given plants.To fulfill the need for accurate measurement of effective light spectrum and real-time acquisition and processing of data,this article proposes a design of light detection equipment,applying to the utilization of agricultural production and the accurate detection of effective light wave band for photosynthesis of certain plants.The equipment takes SCM as a core,adopts definitive light filter separating band to modify light sensor and realize the measurement of light factor intensity plants needed during photosynthesis.Also it supports data transfers through RS232 interface,real-time stored data communication using SD and storage,ect.The experiment proves that the design can realize aforementioned function and the detected error is within5%,which meets the need.