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随着公路交通日趋发达,每个交通路口方向信号指示灯在夜晚都发挥重要的作用。为了节约能源,以及不可能做到在野外的每个路口都架设220伏交流电,介绍了一种采用太阳能电板和蓄电池作为电源,使用MSP430F149超低功耗单片机和独立总线控制器SJAl000实现的CAN总线的交通导向指示灯的设计。详细介绍了控制节点的硬件电路组成,给出了CAN节点初始化以及接收和发送程序流程。
With the increasing development of road traffic, the signal indicator at each traffic intersection plays an important role at night. In order to conserve energy and make it impossible to set up 220 VAC at each junction in the field, a CAN-based implementation of the SJAl000 using a solar panel and battery as the power supply using the MSP430F149 ultra-low-power microcontroller and a standalone bus controller Bus-oriented traffic light design. The hardware components of control node are introduced in detail, and the procedure of CAN node initialization, receiving and sending is given.