再此之前说明一下，如果没有了解过阿里云和DS18B20温度模块的小伙伴，建议回去了解一下我的上两篇文章树莓派接入阿里云IOT平台1（Python模拟数据上传） ，树莓派与DS18B20温度传感器模块的使用，因为这篇文章是根据上两篇延伸开发的，所以小白最好去了解实践一下，看明白了以上两篇文章，想弄明白此文章就是水到渠成的事了。
1.注册产品与设备，这一步我就不详解了，要了解的回到树莓派接入阿里云IOT平台1（Python模拟数据上传）这篇文章了解，很详细，应该看得懂的，在这里我们根据上一篇文章内容做一些更改即可。 产品功能定义留下温度即可，湿度删除。
1.DS18B20接线，想详细了解请看此文章树莓派与DS18B20温度传感器模块的使用 2.代码
# -*- coding: utf-8 -*- import paho.mqtt.client as mqtt import time import hashlib import hmac import random import json #这个就是我们在阿里云注册产品和设备时的三元组啦 #把我们自己对应的三元组填进去即可 options = { 'productKey':'你的productKey', 'deviceName':'你的deviceName', 'deviceSecret':'你的deviceSecret', 'regionId':'cn-shanghai' } HOST = options['productKey'] + '.iot-as-mqtt.'+options['regionId']+'.aliyuncs.com' PORT = 1883 PUB_TOPIC = "/sys/" + options['productKey'] + "/" + options['deviceName'] + "/thing/event/property/post"; # The callback for when the client receives a CONNACK response from the server. def on_connect(client, userdata, flags, rc): print("Connected with result code "+str(rc)) # client.subscribe("the/topic") # The callback for when a PUBLISH message is received from the server. def on_message(client, userdata, msg): print(msg.topic+" "+str(msg.payload)) def hmacsha1(key, msg): return hmac.new(key.encode(), msg.encode(), hashlib.sha1).hexdigest() def getAliyunIoTClient(): timestamp = str(int(time.time())) CLIENT_ID = "paho.py|securemode=3,signmethod=hmacsha1,timestamp="+timestamp+"|" CONTENT_STR_FORMAT = "clientIdpaho.pydeviceName"+options['deviceName']+"productKey"+options['productKey']+"timestamp"+timestamp # set username/password. USER_NAME = options['deviceName']+"&"+options['productKey'] PWD = hmacsha1(options['deviceSecret'],CONTENT_STR_FORMAT) client = mqtt.Client(client_id=CLIENT_ID, clean_session=False) client.username_pw_set(USER_NAME, PWD) return client def DS18B20(): #温度模块函数，返回温度数据 tfile = open("/sys/bus/w1/devices/28- 0316a279a3e8/w1_slave") text = tfile.read() tfile.close() secondline=text.split("\n")[1] temperaturedata = secondline.split(" ")[9] temperature = float(temperaturedata[2:]) temperature = temperature / 1000 return temperature print (temperature) if __name__ == '__main__': client = getAliyunIoTClient() client.on_connect = on_connect client.on_message = on_message client.connect(HOST, 1883, 300) DS18B20()#调用温度模块函数，返回temperature值 payload_json = { 'id': int(time.time()), 'params': { 'temperature': temperature#将DS18B20的函数返回值上传云端 }, 'method': "thing.event.property.post" } print('send data to iot server: ' + str(payload_json)) client.publish(PUB_TOPIC,payload=str(payload_json),qos=1) client.loop_forever()最后运行脚本，再去阿里云看一下，完全OK。 有问题的小伙伴下方留言，喜欢了解树莓派的小伙伴请关注一下喔，持续更新。
