針對部分小區及公共場所小車掉頭難的問題,提出了以STC15F2K60S2單片機為控制核心,以車燈作為掉頭控制信號的小車自動掉頭控制系統,利用超聲波傳感器檢測小車是否到達轉盤,由光敏電阻傳感器檢測小車的車燈控制信號,通過單片機識別處理,啟動電機帶動轉盤勻速旋轉180°,駕駛員無須下車,就能輕松實現小車原地掉頭,無需人工操作。系統具有語音提示操作功能,有手動和自動兩種工作模式。經測試系統運行穩定可靠。

In view of small cars’ U-turn difficulty in some residential areas and public places,an automatic U-turn control system for small cars was proposed,which took STC15F2K60S2 as the control core and the lights as the U-turn control signal. The position of small cars on the turntable was detected by ultrasonic sensor,and the light control signal was detected by light sensitive resistance sensor. The starting motor drove the turn table to rotate at a uniform speed of 180 degrees. The driver could easily realize the car’s U-turn,without getting off the car and manual operation. The system had voice prompt operation function,and had manual and automatic modes of operation. The system was tested to be stable and reliable.

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