摘要
本文介绍了对放置在检测板上的4个光电二极管,在太阳光照射下,产生的电流信号进行模拟信号采集和单片机处理数据的实现过程。给出了基于单片机的模拟信号采集系统的总体框架,对硬件及软件设计作了详细的说明。系统以SPI为传输方式,以STC89C52为控制器,实现了信号的模数转换及数据的传送与处理。本文设计的光电模拟信号检测跟踪方案,更好的确定太阳辐射角度的精确位置,控制更精准。
In this paper, 4 photodiodes are placed on the test board. Under the sunlight, current signals produced by photodiodes, it is used to analog data acquisition. Then the microcontroller process the data. The frame of the system of analog signal＇s collection based on MCU is introduced and the hardware and software is designed in details in this paper. With the transmission mode of SPI and with the MCU of STC89C52, the transform from analog signals to digital signals, data＇s transmission and processing is achieved by this system. This design of the optical analog signal detecting and tracking program, can better determine the precise location of the angle of solar radiation, and then realize the more precise control.
出处
《自动化技术与应用》
2010年第9期40-43,共4页
Techniques of Automation and Applications
