基于单片机的全自动洗衣机

论文编号:JD892  论文字数:22097,页数:43

摘要

随着电子技术的飞速发展，人们生活水平的提高及生活节奏的加快，家电产品是越来越深入人们的日常生活。本系统研究的内容就是以单片机为中心的洗衣机控制系统设计,系统采用常见的价廉物美的ATMEL单片机AT89C51作为控制核心。为防止因电源过低或电源间断性供电而引起电脑工作状态混乱，设计了欠压检测保护电路。如有脱水误开盖或脱水不平衡等状况，蜂鸣器鸣叫，提示用户进行处理，保证洗衣机及人身安全。本设计按键较少，采用单端直接输入方式，使电路简单。功率驱动电路先由三极管管进行电流放大后再加到继电器的控制极上，作为继电器的触发信号。由继电器实施对电动机、进水阀、排水阀的控制。显示电路采用三只发光二极管作程序选择键功能显示。电源电路经变压，整流，滤波后经三端集成稳压器7805输出稳定的5V直流电压，作为程序控制器的主电源。

关键词:单片机 洗衣机 程序 电源

Abstract
Along with electronic technology swift development, the people living standard''s enhancement and rhythm of life''s quickening, the electrical appliances product is more and more thorough people''s daily life. This system research''s content is take the monolithic integrated circuit as the central washer control system design, the system uses the common low-price quality merchandise ATMEL monolithic integrated circuit AT89C51 to take the control core. In order to prevent because of the power source to be excessively low or the power source discontinuity power supply causes the computer active status to be chaotic, has designed the undervoltage examination protection circuit. If has the dehydration to uncap or the dehydration by mistake not balanced and so on conditions, the buzzer sounds, to prompt the user to carry on processing, guarantees the washer and the personal safety. This design pressed key are few, selects the single end direct input method, makes the electric circuit to be simple. The power driving circuit carries on first after the triode tube the electric current enlarges adds to relay''s control again on extremely, takes relay''s trigger pip. Implements by the relay to the electric motor, the inlet valve, draw-off valve''s control. The display circuit uses three light emitter diodes to make the program selection key function demonstration. The power circuit passes through the live pressure, the rectification, after the filter, after three end integration manostat 7805 output stable 5V DC voltage, takes program timer''s main power source.

key word: Monolithic integrated circuit washer procedure power source

目录
摘要 I
Abstract II
目录 III
第1章 绪论 1
1.1 洗衣机的发展趋势 1
1.2 课题背景 2
1.3 本课题的任务和要求 4
第2章 方案论证 6
2. 1方案一：电动程序控制器式洗衣机 6
2. 2方案二：单片微机控制器式洗衣机 7
2. 3方案比较与选择 8
第3章 总体设计 9
3.1设计概述 9
3.2系统总体框图 9
3.3 功能分析 9
3.4 全自动洗衣机的控制功能 10
3.5 电动机的选择 12
3.5.1 分相启动式电动机 12
3.5.2 罩极式电动机 13
3.5.3 电容式启动电动机 13
3.5.4 交、直流两用电动机 13
第4章 硬件电路设计 15
4.1 总体设计 15
4.2  Protel99se软件介绍 16
4.3 单片机的选择 16
4.4 电源系统的设计 19
4.5 按键部分和LED部分设计 20
4.6 蜂鸣器部分设计 21
4.7 进/出水阀部分设计 21
4.8 电动机部分设计 22
4.9 水位开关部分设计 22
第5章 软件程序设计 23
5.1 keil软件 24
5.2程序流程图 25
第6章 结论 27
6.1 全自动洗衣机的特点 28
6.2 结论 28
致    谢 28
参考文献 29
附录1：源程序 30
附录2：完整的SCH图 38