单片机电子秤大学设计方案(工程学院).pdf
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1、毕 业 设 计(论 文)设计(论文)题目:基于单片机的电子秤系统设计学院 名称:专业:班级:姓名:学号指导教 师:职称定稿日期:年月日基于单片机的 电子秤系统设计摘要电子秤是将检测与转换技术、计算机技术、信息处理、数字技术等技术综合一体的现代新型称重仪器。它与我们日常生活紧密结合息息相关。电子称主要以单片机作为中心控制单元,通过称重传感器进行模数转换单元,在配以键盘、显示电路及强大软件来组成。电子称不但计量准确、快速方便,更重要的自动称重、数字显示,对人们生活的影响越来越大,广受欢迎。本系统的设计主要从硬件电路设计,软件编程调试,实物焊接调试三部分进行详细阐述。硬件电路主要是基于单片机AT89
2、S52 为核心的控制单元实现数据的处理,采用压力传感器对数据进行采集,电子秤专用24位AD转换芯片 HX711对传感器采集到的模拟量进行AD转换,转换后的数据送到单片机进行处理显示,数据显示由LCD1602液晶实现,液晶显示效果稳定无闪烁关键词:AT89S52单片机;电子秤;压力传感器;HX711文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ
3、6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S
4、7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ
5、6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S
6、7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ
7、6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S
8、7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3WIRELESSTEMPERATUREDETECTINGSYS
9、TEMDESING BASEDON MCU ABSTRACT With Intelligent electronic scale is the detection and conversion technology,computer technology,information processing,digital technology,an integrated modern technology of new weighing equipment.Ectronic scale takes SCM as its central controling unit,and achieves AD
10、transform through weighting transducer,then adds keybord,display circuit and powerful softerwear.It is not only accurate,swift,and convenient,but also makes an important effect to people s life by its automatic weightment and digital display,so it becomes more and more popular.The design of this sys
11、tem gives its eleboration from 3 parts:Hardwear circuit design,softwear programme debugging and entity weld debugging.Hardwear circuit reaches data processing by the controling unit which based on AT89S52,and gathers data by weighting transducer,then makes AD transform by HX711 to the data gathered,
12、and the transformed data then transferred to AT89S52 for display prosessing,at last LCD1602 would show it out steadily without twinkling Key Words:AT89S52 MCU,Electrnoic Scale,Load sensor,HX711.文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5
13、K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:C
14、G6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5
15、K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:C
16、G6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5
17、K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:C
18、G6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5
19、K1 ZQ6Q9L6P2Z3目录摘要 IABSTRACTII目录 III第 1 章绪论 11.1 课题背景与研究意义1 1.2 系统设计要求2 1.3 系统设计方案3 1.4 电子秤的主要组成5 1.4.1 电子秤的基本结构5 1.4.2 电子秤的工作原理5 1.4.3 电子秤的计量性能6 第 2 章系统硬件设计72.1 流系统元器件选型及参数介绍7 2.1.1 系统单片机选型7 2.1.2 系统传感器选型8 2.1.3 系统 AD转换芯片选择10 2.1.4系统显示器选择12 2.1.5系统时钟芯片选择13 2.2 系统硬件电路设计15 2.2.1 系统电源电路设计15 2.2.2 系统单片
20、机主控电路设计16 2.2.3 系统显示部分电路设计17 2.2.4 系统超重报警指示电路设计18 2.2.5 系统按键输入电路设计18 2.3 系统硬件电路的绘制与PCB 线路板制作20 文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:
21、CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J
22、5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:
23、CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J
24、5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:
25、CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J5K1 ZQ6Q9L6P2Z3文档编码:CG6S3S7G7K1 HS9H7N7J
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