本设计为课程设计，根据物流配送的特点，利用传感技术和网络通信技术，提出了基于物联网的智能物流配送系统。本设计采用89C51单片机作为主控制器，用矩阵键盘设置传送带产品计数目标值，用独立按键选择模式和电机的启动与调速，单片机内部计数器T0、T1的计数值输入到显示屏，以实现对产品的计数显示与配送系统。当计数值达到预置值时，停止计数且电机停止运转。然后可另外设定计数目标值，重新按下启动键后，计数值清零，电机运转，进行新一轮计数。本文详细论述了传送带产品计数器的设计原理以及电机传送装置，电路设计，电路原理图和程序设计方案。(This design is a course design. According to the characteristics of logistics distribution, using sensor technology and network communication technology, an intelligent logistics distribution system based on the Internet of things is proposed. In this design, 89C51 single-chip microcomputer is used as the main controller, matrix keyboard is used to set the target value of product counting of conveyor belt, independent key is used to select the mode and the start and speed regulation of motor, the count value of T0 and T1 counter inside the single-chip microcomputer is input to the display screen, so as to realize the counting display and distribution system of products. When the count value reaches the preset value, the count stops and the motor stops running. Then, the target value of counting can be set additionally. After pressing the start key again, the counting value will be cleared and the motor will run for a new round of counting.)