下载后可任意编辑基于单片机控制的电子称的设计 摘 要 本文设计的电子秤以单片机为主要部件，用 C 语言进行软件设计，硬件则以传感器、放大系统、A/D 转换系统、CPU 控制系统、LCD显示系统、报警系统及键盘控制系统七个部分组成。通过对电路输出电压和标准重量的线性关系，建立具体的数学模型，将电压量纲（V）改为重量纲（g）即成为一台原始电子秤，在此基础上增加了LCD 显示、键盘控制及阈值报警功能，随时可改变上限阈值，调节单价，去皮处理，显示总价格的功能，使本产品智能化，符合现代社会电子信息化的要求。关键词：单片机，传感器，A/D 转换，LCD 显示，阈值报警I下载后可任意编辑 THE DESIGN OF MCU-BASED ELECTRONIC WEIGHER ABSTRACTIn this paper, SCM was chosen as the main component of the electronic weigher. Software program was designed by using C language, and the hardware contains 7 parts: sensor, amplification system, A/D conversion system, CPU, LCD display system, alarm system and keyboard control system circuit. By examining the linear relationship between the output voltage and the standard weight, a specific mathematical model was established, and then we should change the voltage dimensionality (V) to weight voltage (g), thus a original electronic weigher was obtained. On this basis, the electronic weigher can be intelligentized by adding LCD display system, keyboard control system and threshold alarm system. The upper threshold and the unit price of the electronic weigher can be changed at any time, and the total price can be displayed on the LCD. This intelligentized product meets the requirements of this electronic times.Key Words: SCM, sensor, A/D conversion, LCD display, threshold alarmI下载后可任意编辑目录摘 要....................................................................................................................................................IABSTRACT.............................................................
