【摘要】 针对城市路灯控制随机性大、精度低和凌晨利用率极低的现状,将模糊决策理论用于照明控制,提出一种基于PIC18F 6720单片机的照明管理系统。介绍了系统的硬件构成、模糊化原理、决策算法及软件设计方案。将环境照度传感器测得的照度值和计算得到的照度变化率作为决策变量,依据人工操作经验并综合考虑亮光和遮蔽等干扰因素来定义模糊集和制定控制规则,实现路灯的“3级亮度调整”自动控制。所采用的“定时通断”控制又成功解决了“夜间空耗”问题。借助全球移动通信系统GSM(Global System for Mobile communication)网络或电话线,系统还能够和远程监控中心通信。实验表明,该系统能够有效地节约电力资源。更多还原

【Abstract】 Considering the high randomicity and low precision of street lamp control in cities and the low usage efficiency in wee hours,a design of illumination supervision system based on PIC18F 6720 microcontroller is proposed,which applies fuzzy decision making theory.The hardware structure,fuzzy algorithm principles,decision-making algorithm and software design are presented.The measured environmental lightness and calculated lightness variation rate are taken as input variables,and the fuzzy sets and control rules are defined according to operational experiences with consideration of interfering factors,with which the automatic control of"three-levelbrightness adjustment" is imple-mented.The "timing on-off " control is used for reducing "night wasting".The system can commu-nicate with remote monitoring center via GSM(Global System for Mobile communication) or telephone networks.Experiments prove that it saves electric power.更多还原