树莓派控制语音控制舵机

语音控制：支持与智能音箱连接，通过语音指令控制插座开关。 #生活技巧# #居家生活技巧# #电器维修技巧# #智能插座控制方法#

原理很简单
首先调用百度语音识别API–>将识别结果转换为wav文件–>通过该文件控制舵机
话不多说，直接上代码
一、百度语音识别代码

#usr/bin/python # -*- coding: utf-8 -*- import numpy as np from datetime import datetime import wave import time import urllib, urllib2, pycurl import base64 import json import os import sys reload(sys) sys.setdefaultencoding( "utf-8" ) save_count = 0 save_buffer = [] t = 0 sum = 0 time_flag = 0 flag_num = 0 filename = 'asr.wav' commun = '1' answer = '1' flag1=0 flag2=0 def getHtml(url): page = urllib.urlopen(url) html = page.read() return html def get_token(): apiKey = "Your API" secretKey = "Your Key" auth_url = "https://openapi.baidu.com/oauth/2.0/token?grant_type=client_credentials&client_id=" + apiKey + "&client_secret=" + secretKey; res = urllib2.urlopen(auth_url) json_data = res.read() return json.loads(json_data)['access_token'] def dump_res(buf): #global duihua global res print "字符串类型" print buf a = eval(buf) print type(a) if a['err_msg']=='success.': res = a['result'][0] #可以在这里输出返回的语句 else: res="" #print duihua def use_cloud(token): fp = wave.open(filename, 'rb') nf = fp.getnframes() f_len = nf * 2 audio_data = fp.readframes(nf) cuid = "9691607" #产品id srv_url = 'http://vop.baidu.com/server_api' + '?cuid=' + cuid + '&token=' + token http_header = [ 'Content-Type: audio/pcm; rate=16000', 'Content-Length: %d' % f_len ] c = pycurl.Curl() c.setopt(pycurl.URL, str(srv_url)) #curl doesn't support unicode #c.setopt(c.RETURNTRANSFER, 1) c.setopt(c.HTTPHEADER, http_header) #must be list, not dict c.setopt(c.POST, 1) c.setopt(c.CONNECTTIMEOUT, 30) c.setopt(c.TIMEOUT, 30) c.setopt(c.WRITEFUNCTION, dump_res) c.setopt(c.POSTFIELDS, audio_data) c.setopt(c.POSTFIELDSIZE, f_len) c.perform() #pycurl.perform() has no return val # 将data中的数据保存到名为filename的WAV文件中 def save_wave_file(filename, data): wf = wave.open(filename, 'wb') wf.setnchannels(1) wf.setsampwidth(2) wf.setframerate(SAMPLING_RATE) wf.writeframes("".join(data)) wf.close() token = get_token() while (True): print "..............等待中1................" os.system('sudo arecord -D "plughw:1,0" -f S16_LE -d3 -r 16000 /home/pi/Desktop/asr.wav') use_cloud(token) print "-----> return result:"+commun[0] print "..............等待中2................" print res if "关闭舵机一" in res: print"好的，正在关闭舵机一" answer = '好的,关闭,请稍后' url = "http://tsn.baidu.com/text2audio?tex="+answer+"&lan=zh&per=0&pit=1&spd=7&cuid=9691607&ctp=1&tok=24.de7d08e3164eed77f61cfcd1b2c0.2592000.1499256984.282335-9729638" print "关闭中1" os.system('mplayer "%s"'%(url)) print "关闭中2" os.system('python /home/pi/Desktop/control3.py') #execfile('/home/pi/Desktop/control3.py') print"............已成功关闭..............." if "打开舵机一" in res: print"正在打开舵机一" answer = '好的，正在为您开启，请稍后' url = "http://tsn.baidu.com/text2audio?tex="+answer+"&lan=zh&per=0&pit=1&spd=7&cuid=9691607&ctp=1&tok=24.de7d08e3164eed77f61cfcd1b2c0.2592000.1499256984.282335-9729638" os.system('mplayer "%s"'%(url)) os.system('python /home/pi/Desktop/control1.py') # execfile('/home/pi/Desktop/control1.py') if "关闭舵机二" in res: print"好的，正在关闭舵机二" answer = '好的,关闭,请稍后' url = "http://tsn.baidu.com/text2audio?tex="+answer+"&lan=zh&per=0&pit=1&spd=7&cuid=9691607&ctp=1&tok=24.de7d08e3164eed77f61cfcd1b2c0.2592000.1499256984.282335-9729638" print "关闭中1" os.system('mplayer "%s"'%(url)) print "关闭中2" os.system('python /home/pi/Desktop/control4.py') # execfile('/home/pi/Desktop/control4.py') print"............已成功关闭..............." if "打开舵机二" in res: print"正在打开舵机二" answer = '好的，正在为您关闭，请稍后' url = "http://tsn.baidu.com/text2audio?tex="+answer+"&lan=zh&per=0&pit=1&spd=7&cuid=9691607&ctp=1&tok=24.de7d08e3164eed77f61cfc8a7cd1b2c0.2592000.1499256984.282335-9729638" os.system('mplayer "%s"'%(url)) os.system('python /home/pi/Desktop/control2.py') # execfile('/home/pi/Desktop/control2.py')

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舵机控制代码
舵机开

#usr/bin/python # -*- coding: utf-8 -*- import RPi.GPIO as GPIO import time import signal import atexit atexit.register(GPIO.cleanup) servopin = 27 GPIO.setmode(GPIO.BCM) GPIO.setup(servopin, GPIO.OUT, initial=False) p = GPIO.PWM(servopin,50) #50HZ p.start(0) time.sleep(2) for i in range(0,200,60): p.ChangeDutyCycle(2.5 + 10 * i / 180) time.sleep(0.02) p.ChangeDutyCycle(0) time.sleep(0.2) exit()#退出文件

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舵机关

#usr/bin/python # -*- coding: utf-8 -*- import RPi.GPIO as GPIO import time import signal import atexit atexit.register(GPIO.cleanup) servopin = 17 GPIO.setmode(GPIO.BCM) GPIO.setup(servopin, GPIO.OUT, initial=False) p = GPIO.PWM(servopin,50) #50HZ p.start(0) time.sleep(2) for i in range(0,181,90): p.ChangeDutyCycle(2.5 + 10 * i / 180) time.sleep(0.02) p.ChangeDutyCycle(0) time.sleep(0.2) exit()#退出文件

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对于代码这里有更大神写了更详细的说明
树莓派实现语音识别与语音合成——百度云语音识别API(离线)
手把手教你做树莓派语音识别

网址：树莓派控制语音控制舵机 https://www.yuejiaxmz.com/news/view/242216

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