智能导游小车的设计与实现

Design and Implementation of Intelligent Tour Guide Car

针对自助旅游的需求,设计开发了一种基于AT89S52单片机控制的智能导游小车。该小车采用QTI光电传感器进行道路循迹,RFID读卡器以无线射频的方式实现景点标签卡信息的读取,以360°伺服舵机作为驱动的动力,并利用PWM方式实现对车速和位置的准确控制,采用语音模块(WT588D)实现景点信息的编辑和存储,通过功放模块以DAC模式间接驱动扬声器实现景点信息的播报和音量的调节;以AT89S52单片机为控制核心接收各传感器的信息,并根据向量分析法确定小车行进的角度和方向,从而做出前进、后退、左转、右转、读卡、语音播报等决策。

Aiming at the demand for self-service tourism,an intelligent tour guide car based on AT89 S52 microcontroller was developed in this paper.Using the QTI photoelectric sensors to track the road,applying RFID card reader to read the information of spot card in a way of radiofrequency mode,the car uses a 360 degree servo controller as the driving power,to achieve accurate control of speed and position with PWM.It adopts the voice module（WT588 D）to realize the edition and storage of the attractions information.By adopting the power amplifier module in DAC mode to drive loudspeaker to realize the broadcast of scenic spot information and the regulation of volume.As a control core,AT89 S52 microcontroller receives the information of each sensor,and determines the angle and direction of the car by vector analysis,so as to make decisions such as forward,backward,left turn,right turn,card reading,voice broadcast and so on.