采用单总线方式与cpu进行数据传输，与DS18B20相似，对时序的要求比较高，不同之处在于写程序的时候数据的采集必须间隔1s以上，不然采集会失败。此篇将利用arduino驱动DHT11，检测环境温湿度情况。-The cpu data transfer using a single bus with DS18B20 similar timing requirements are relatively high, the difference lies in the writing program data collection must be spaced more than 1s, or collected will fail. This case the use of arduino driven DHT11, detection of environmental temperature and humidity.