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将ZigBee技术和GPRS/CDMA1x移动通信技术相结合,设计了一种基于ZigBee-WSN和GPRS/CDMA1x的LED路灯照明远程监控系统,系统采用两级双网组网模型和簇-链型网络拓扑结构,通过网络化、智能化控制,实现了灯具的遥测、遥控。提出一种应用于路灯照明的亮度自适应节能控制算法,该算法可根据时段、环境亮度和人员活动情况改变PWM信号的占空比,自动调节LED的亮度,充分利用LED的可控性,实现最佳照度控制,达到节能目的。
Based on the combination of ZigBee technology and GPRS / CDMA1x mobile communication technology, a remote monitoring system of LED street lighting based on ZigBee-WSN and GPRS / CDMA1x is designed. The system adopts two-level dual network model and cluster-chain network topology , Through the network, intelligent control, to achieve the lighting telemetry, remote control. This paper presents a brightness adaptive energy saving control algorithm applied to street lighting. The algorithm can change the duty cycle of PWM signal according to time, ambient brightness and personnel activity, automatically adjust the brightness of LED and make full use of the controllability of LED to realize Optimal illumination control, to save energy.