基于LT3476的LED交通补光灯设计

Design of LED Intelligent Traffic Light Based on LT3476

设计了一款基于LT3476芯片的智能LED交通补光灯系统。该系统可同时驱动并控制32只大功率白光LED,设计最大容量可达48W。系统实现了交通监控系统在低照度条件下自动开启补光功能、外部频闪信号发出时自动开启频闪功能、外部爆闪信号发出时自动开启爆闪功能以及可与上位机之间实现485通信功能等。对该系统系统设计理念、硬件电路设计、软件设计进行了说明和分析。

This paper describes a smart LED intelligent traffic lights system based on LT3476 chip.The system can drive 32 highpower white LED,and can achieve the maximum capacity reached 48 W.The system included that open the LED light in the condition of low illumination,the lighting supplement mode,the flash mode,RS485 communication and so on.The design concept of system,the hardware circuit and software are discussed and analyzed.