Arduino小车语音控制

大体思路：

1. 用Python做服务器
2. ESP8266WIFI模块接受服务器信息，
3. 麦克风录制语音上传百度识别，识别后返回结果
4. 服务器判断返回的结果并发出相应的指令信息（让车前进、后退等）给ESP8266
5. ESP8266通过串口通信再给Arduino发射信息控制小车

所需物品：

1. Arduino主板及组装小车所需主板（item.taobao.com/item.htm）
2. WIFI模块，ESP8266（item.taobao.com/item.htm）
3. 杜板线多条
4. 麦克风

一：按照教程组装好小车，此时小车有寻迹、超声波避障、蓝牙遥控

二：ESP8266烧入程序（zhongbest.com/2017/01/02/esp8266-01%E6%97%A0%E7%BA%BF%E6%A8%A1%E5%9D%97%E7%9A%84arduino%E7%83%A7%E5%86%99%E6%96%B9%E5%BC%8F/）

三：Python编写服务器

1. 语音录制

2. 语音识别

3. 服务器

语音录制（record.py）：

import wave
from pyaudio import PyAudio,paInt16
from speech import speechChina

framerate=8000
NUM_SAMPLES=2000
channels=1
sampwidth=2
TIME=2
def save_wave_file(filename,data):
    '''save the date to the wavfile'''
    wf=wave.open(filename,'wb')
    wf.setnchannels(channels)
    wf.setsampwidth(sampwidth)
    wf.setframerate(framerate)
    wf.writeframes(b"".join(data))
    wf.close()

def my_record():
    pa=PyAudio()
    stream=pa.open(format = paInt16,channels=1,
                   rate=framerate,input=True,
                   frames_per_buffer=NUM_SAMPLES)
    my_buf=[]
    count=0
    while count<TIME*3:#控制录音时间
        string_audio_data = stream.read(NUM_SAMPLES)
        my_buf.append(string_audio_data)
        count+=1
        print('.')
    save_wave_file('record/01.wav',my_buf)
    stream.close()

chunk=2014
def play():
    wf=wave.open(r"record/01.wav",'rb')
    p=PyAudio()
    stream=p.open(format=p.get_format_from_width(wf.getsampwidth()),channels=
    wf.getnchannels(),rate=wf.getframerate(),output=True)
    while True:
        data=wf.readframes(chunk)
        if data=="":break
        stream.write(data)
    stream.close()
    p.terminate()

def record():
    # while True:
    isPass = input("开始录音（时间5秒）：")
    if isPass == '0':
        print("录音")
        my_record()
        print("语音识别")
        return speechChina()
    else:
        return "前进"

语音识别（speech.cy）：

1. 百度AI开放平台注册开发者账号获取APP_ID，API_KEY，SECRET_KEY
2. 下载Python语音识别SDK

from aip import AipSpeech
import json

APP_ID = '997'
API_KEY = '7yopVC8Y7WlRq1VnU'
SECRET_KEY = 'P33gdGkbuBByrSjquk'

aipSpeech = AipSpeech(APP_ID, API_KEY, SECRET_KEY)
result = aipSpeech.synthesis('你好阿里巴巴', 'zh', 1, {
    'vol': 5,
})

# 读取文件
def get_file_content(filePath):
    with open(filePath, 'rb') as fp:
        print(filePath)
        return fp.read()

def speechChina():
    results = aipSpeech.asr(get_file_content('record/01.wav'), 'wav', 8000, {
        'lan': 'zh',
    })
    print(results['result'])
    return results['result'][0]

if __name__ == '__main__':
    results = speechChina()
    print(results)

服务器（service.py）：

# 导入 socket、sys 模块
import socket
import sys
# 创建 socket 对象
from record import record

serversocket = socket.socket(
    socket.AF_INET, socket.SOCK_STREAM)
# 获取本地主机名
host = socket.gethostname()
port = 8866
# 绑定端口
serversocket.bind((host, port))
# 设置最大连接数，超过后排队
serversocket.listen(5)
while True:
    # 建立客户端连接
    print("进来了")
    clientsocket, addr = serversocket.accept()
    print(addr)
    while True:
        # accept_data = clientsocket.recv(8024)## conn.recv()接收客户端的内容，接收到的是bytes类型数据
        # accept_data2 = str(accept_data, encoding="utf8")  # str(data,encoding="utf8")用“utf8”进行解码
        # if accept_data2 == 'byebye':
        #     break
        # print("".join(("接收内容：", accept_data2, "客户端口：", str(addr[1]))))
        #send_data = input("输入发送内容：")
        control = record()
        if control.find(u"前") != -1:
            control = 'A'
            print('前进')
        elif control.find(u"后") != -1:
            control = 'B'
            print('后退')
        elif control.find(u"左") != -1:
            control = 'C'
            print('左边')
        elif control.find(u"右") != -1:
            control = 'D'
            print('右边')
        elif control.find(u"停") != -1:
            control = 'E'
            print('停止')
        else:
            control = 'A'
        clientsocket.sendall(bytes(control, encoding="utf8"))  # 发送内容必须为bytes类型数据，bytes(data, encoding="utf8")用“utf8”格式进行编码
    clientsocket.close()
    print("关闭了吗？")

最后放张小车图片：

语音控制