面向微型植物工厂的太阳能自动追光系统设计.pdf

pS CI-TECHINNOVATION 2. School of Traffic, Northeast Forestry University, Heilongjiang Harbin 150040 China ） Abstract In this paper, in order to efficiently collect and use solar energy, the authors designed a physical device and sys- tem can be used for solar energy automatic tracking light in micro-plant factory. From three aspects of mechanical design, nbsp;hardware circuit design and design of solar energy automatic tracking light, the authors introduced hardware and software con- stitution of this system, and expounded workflow and software flow of solar energy automatic tracking light. Then, the au- thors determined design scheme of algorithm of solar energy automatic tracking light, and designed hardware circuits of this nbsp;system, including light intensity measuring circuit, voltage regulator circuit of power management system and double-shaft DC nbsp;motor drive system circuit. In the end, the authors pointed out that the system realized closed-loop control of double-shaft DC nbsp;motor, which may greatly improve accuracy and efficiency of automatic tracking light and has important strategic significance nbsp;on solving energy problems by fully exploiting and utilizing solar energy. Key words automatic control; plant factory; automatic tracking light; energy storage; double-shaft control 图 9 太阳能自动追光系统的软件流程图 断电 等待 1 s 定时到 启动定时器 系统初始化 开始 减速电机 结束 左右两侧光照强度 上下两侧光照强度 光照强度传感器 加权后差值在允许范围内 加权后差值在允许范围内 PWM 推杆电机 PWM 蓄电池电量满足要求 白天 开关电源供电 蓄电池供电 Y N Y N Y N N Y Y Y N N 可 持续发展 Sustainable Development 060/p