基于ZigBee的无线照明系统设计

Wireless Lighting System Terminal Based on ZigBee

摘要: 为了改变传统室内照明系统布线复杂，不易控制、无法满足环境采集和线性调光要求的缺点，采用ZigBee技术来操控LED灯。本论文对ZigBee网络特点，ZigBee中各层的协议，数据传输方式及网络拓扑结构进行了分析，根据系统需求提出了总体设计方案和系统硬件结构框架，完成了电源控制电路、串口通信电路、LED照明控制电路、光敏电路等硬件设计。在研究传统智能照明控制系统的基础上，以ZigBee协议为平台通过光照强度和ZigBee协调器来控制LED，以光照感应技术和协调器为基础的整体系统方案，确定将ZigBee网络作为系统的通信基础。即采用两块ZigBee功能板，一块为终端导入光敏传感器，用作信号发射，另一个用作协调器建立网络，设定为手动模式下LED灯的开关。在自动模式下当光照强度不足时，LED灯将自动变亮。在手动模式下通过协调器改变LED的亮灭。

Abstract: In order to change the disadvantages of traditional indoor lighting system such as complex wiring difficult to control and unable to meet the requirements of environment acquisition and linear dimming the LED lamp is controlled by ZigBee technology. In this paper, the protocol, data trans-mission mode and network topology of ZigBee network are analyzed. According to the requirement of the system, the overall design scheme and the hardware frame of the system are put forward, and the power supply control circuit, the serial communication circuit, the LED lighting control circuit and the photosensitive circuit are completed. Based on the research of traditional intelligent lighting control system, ZigBee protocol is used as the platform. The light intensity and the ZigBee coor-dinator are used to control the LED. The whole system scheme based on the illumination induction technology and the coordinator determines that the ZigBee network is the communication basis of the system. That is to say, two ZigBee function boards are used, one is imported into Guang Min sensor for terminal, and the other is used as coordinator to set up the network, which is set up as the switch of LED lamp in manual mode. In automatic mode, the LED lights will automatically turn on when the light intensity is low. The brightness of the LED is changed in manual mode through the coordinator.