基于单片机的数字式称重仪设计  

Design of a digital weighing system based on SCM

作　　者：苏凤[1] 王选诚[1] 陈政[1] 杨海利 

机构地区：[1]烟台南山学院,山东烟台265713 [2]山东龙口市东海热电有限公司,山东烟台265713

出　　处：《传感器世界》2015年第12期21-25,共5页Sensor World

摘　　要：设计了一款数字化称重仪,以89C52单片机为核心,由称重电路、键盘电路、显示电路和报警电路等组成外围电路,并设计了相关软件。重量由称重传感器测量,信号放大电路对其进行放大,经A/D转换传送至CPU控制系统,最后由LCD显示。系统指令可通过键盘输入。系统设有阈值报警系统,可防止超量程损害仪器。最后通过Proteus对设计的电路进行了模拟仿真,实现了称重功能,并可以较好的进行称重及价格显示。A digital weighing system is designed in this paper with 89C52 SCM as the core component and the weighing, keyboard, display and alarm circuits as peripheral circuits. The software programming is completed. The weight signals are collected by the sensor, amplified by the amplification circuit, converted by the A/D converter, transmitted to the CPU, and displayed on the LCD. The keyboard input system is used to input instructions. The threshold alarm system can prevent damage of out range. Finally, the circuit is simulated with the Proteus. The results show that the functions of weighing and price display are realized.

关 键 词：单片机 称重传感器 A/D转换器 LCD显示器 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构] TH715.1[自动化与计算机技术—计算机科学与技术]