1、 毕业设计（论文）毕业设计（论文） 题目题目 超市电子秤设计超市电子秤设计 2 摘摘 要要 随着微电子技术的应用， 市场上使用的传统称重工具已经满足不了人们的要 求。 为了改变传统称重工具在使用上存在的问题， 在本设计中将智能化、 自动化、 人性化用在了电子秤重的控制系统中。本系统主要由单片机来控制，测量物体重 量部分由称重传感器及 A/D 转换器组成， 加上显示单元， 此电子秤俱备了功能多、 性能价格比高、功耗低、系统设计简单、使用方便直观、速度快、测量准确、自 动化程度高等特点。 本系统以 AT89S52 单片机为主控芯片，外围附以称重电路、显示电路、报警 电路、键盘电路（可输入产品价格进
2、而计算出产品总价）等构成智能称重系统电 路板，从而实现自动称重系统的各种控制功能。可以说,此设计所完成的电子秤 很大程度上满足了应用需求。 关键词关键词：单片机AT89S52；称重传感器；A/D转换器；LED显示器； 3 Abstract With the application of microelectronic technology on the market weighing the use of traditional tools have been unable to meet peoples requirements. Weighing instruments in order
3、to change the traditional problems in the use of, in this design will be intelligent, automated, user-friendly use in the control of electronic weighing systems. This system is mainly controlled by the microcontroller to measure the weight of objects in part by the weighing sensor and A / D converte
4、r component, together with display units, this electronic scale is ready multi-functional, high cost performance, low power consumption, system design is simple and , easy to use and intuitive, fast, measurement accuracy, and high degree of automation. The system AT89S52 microcontroller as the master chip, accompanied by weighing the external circuit, display circuit, alarm circuit, keyboard circuit (which can enter the product price and thus calculate the total product), etc.
