目录
一、主要功能
二、硬件资源
三、程序编程
四、实现现象
一、主要功能
基于51单片机，搞L298N驱动两个电机转动，然后搞LCD1602显示屏，弄个超声波传感器实时检测距离 通过LCD1602显示距离，如果距离小于阈值，则两个电机停止，蜂鸣器报警，灯光亮起。如果大于阈值，说明没有障碍物，电机正常运作。有两个按键，一个是自动按键，就是按下后靠超声波来避障。一个是手动按键，按下后，由电脑云端也就模拟语音来控制小车的运转，比如发现0x01，让小车停止运行，发送0x02，让小车正常运行。
二、硬件资源
基于KEIL5编写C++代码，PROTEUS8.15进行仿真，全部资源在页尾，提供安装包。
三、程序编程
#include <REGX52.H>
#include<intrins.h>
#include<stdio.h>
#include "Delay.h"
#include "LCD1602.h"
#define uchar unsigned char
#define uint unsigned int
typedef unsigned char u8;
typedef unsigned int u16;
typedef unsigned char uint8;
typedef unsigned int uint16;
typedef unsigned long uint32;
sbit CS=P1^0; //51单片机引脚设置
sbit CLK=P1^1;
sbit DIO=P1^2;
sbit Motor1_IN1 = P3^3; //电机IN1口
sbit Motor1_IN2 = P3^4;
sbit Motor2_IN1 = P1^0; //电机IN2口
sbit Motor2_IN2 = P1^1;sbit LED = P1^5; //LED灯定义
sbit key1 = P1^4;
sbit key2 = P1^6;
sbit BEEP = P1^3;
sbit Tr=P3^5;//触发信号
sbit Ec=P3^6;//回响信号uchar Recv_Buffer[4];
uint Voltage[]={'0','0','0','0'};
bit bdata IIC_ERROR;
static int flag = 0;
unsigned int distance;
static char Dat_rxd;
unsigned int Read_value(void);//读值函数void Delay10us(void);//10us延时函数void Time0_Init() //定时器初始化
{TMOD = 0x21;TH0 = 0x00;TL0 = 0x00;TR0 = 0;//先关闭定时器0
}void Time0_Int() interrupt 1 //中断程序
{TH0 = 0xfe; //重新赋值TL0 = 0x33;
}
unsigned int Read_value()
{uint result;Tr=1;//触发引脚发出11us的触发信号（至少10us）Delay10us();Tr=0;while(!Ec);//度过回响信号的低电平TR0=1;//开启定时器0while(Ec);//度过回响信号高电平TR0=0;//关闭定时器0result=((TH0*256+TL0)*0.034)/2; // 距离cm=（时间us * 速度cm/us）/2return result + 2; //+2修正补偿
}void Com0_Init(void)
{EA=1; //开总中断ES=1; //允许串口中断TMOD=0x21; //定时器T1，在方式3中断产生波特率SCON=0x50;TH1=0xfd; //波特率设置为9600(晶振12M)TL1=0xfd;TR1=1; //开定时器T1运行控制位// TI=1;
}void Com0(void) interrupt 4 using 1
{if(RI){Dat_rxd=SBUF; //串口接收Dat_rxd=Dat_rxd-0x30;RI=0;}
}
void main() //主函数
{ Tr=0; //出发引脚首先拉低LCD_Init(); //显示屏初始化LCD_ShowString(1,1,"Distance:"); //显示字符串DistanceTime0_Init(); //定时初始化Com0_Init();//串口初始化 LED = 0;BEEP = 0;while(1){distance = Read_value();//读值distance+=3;LCD_ShowNum(1,10,distance,3); //显示距离if(flag == 1){if(distance>=50){Motor1_IN1 = 1;Motor1_IN2 = 0;Motor2_IN1=1;Motor2_IN2=0;LED = 0; //LED灯熄灭BEEP = 0; //蜂鸣器关掉}else if(distance < 50) //超声波距离判断{Motor1_IN1 = 0;Motor1_IN2 = 0;Motor2_IN1 = 0;Motor2_IN2 = 0;LED = 1; //LED灯亮起BEEP = 1; //蜂鸣器响起}}if(flag == 2){if(Dat_rxd==0x01){ Motor1_IN1 = 0;Motor1_IN2 = 0;Motor2_IN1 = 0;Motor2_IN2 = 0;}else if(Dat_rxd==0x02){Motor1_IN1 = 1;Motor1_IN2 = 0;Motor2_IN1=1;Motor2_IN2=0;}else if(Dat_rxd==0x03){Motor1_IN1 = 1;Motor1_IN2 = 0;Motor2_IN1=0;Motor2_IN2=0;}else if(Dat_rxd==0x04){Motor1_IN1 = 0;Motor1_IN2 = 0;Motor2_IN1=1;Motor2_IN2=0;}}if(key1 == 0){Delay(100); //消除抖动if(key1 == 0){flag = 1;}}if(key2 == 0){Delay(100);//消除抖动if(key2 == 0){flag = 2;}}}}void Delay10us()
{TL0=0xF5;TH0=0xFF;TR0=1;while (TF0==0);TR0=0;TF0=0;
}四、实现现象
具体动态效果看B站演示视频：
基于单片机的智能语音识别与处理系统设计_哔哩哔哩_bilibili
全部资料（源程序、仿真文件、安装包、演示视频）：
