利用超声波传感器与AT89C51单片机来进行液体流量测量。一、 超声波发射电路：二、 超声波检测接收电路三、 流量显示电路四、 超声波测量流量应用仪的工作原理：-The use of ultrasonic sensors with AT89C51 single-chip for liquid flow measurement. First, ultrasonic transmitter: the Second, ultrasonic detection circuit to receive th

目前，物联网备受关注。在多网关无线传感网络与物联网的异构融合中，通过网关连接是最常用的策略。本程序基于贪心算法，寻找每个节点至多个网关的最优路径，并将流量按比例分配给各网关。- Recently, the Internet of Things is getting more and more attention.There are different approaches to integrate WSN into the Internet. The most usual one is to