西安邮电大学毕业论文基于单片机的简易电子称作 者：梁忠涛院 系：自动化学院专 业：测控技术与仪器班 级：测控 1103指导老师：周有摘要 此次设计主要是以单片机 AT89S52 为核心设计的简易电子秤。本设计主要分为传感器部分、单片机中央处理部分、LCD 显示部分、键盘输入部分。利用压力传感器采集信号，DS1602 显示单价和质量。输出信号输入到中央处理部分 AT89S52 的芯片,通过信号放大和 AD 转换，编程对信号进行处理传送到 1602 液晶显示屏显示相关数据，按键电路通过按键对单价进行设置。本设计结构简单，具有抗干扰能力强、成本便宜、可扩展性强等特点。关键词：单片机 压力传感器 液晶显示 电子秤Topic: Hardware Design of Electronic Scale Based on Single Chip MicrocomputerCai Liming2025926068, Automation majorAbstract This hardware design of electronic scale is mainly based on the 51 series single-chip AT89S52 as control core, realizes the basic control function of electronic scale. In the design of the system, in order to make better use of the modular design method, the design of each unit step function module, the hardware of the system can be divided into the smallest system, data acquisition, man-machine interface and power supply system four parts. Minimum system consists of AT89S52 and extension of the external data memory; data acquisition part consists of pressure sensor, signal pre-processing and A / D conversion parts, includes an operational amplifier ADC0832; man-machine interface for keyboard input and liquid crystal display, the main use of matrix keyboard and LCD1602 display, can easily input data and intuitive display value. Software design of single-chip C programming language, to achieve the design of the whole control function. The electronic scale can realize the basic function of weighing, weighing range for 0.5-10kg.The whole system has the advantages of simple structure, convenient us...
