文档介绍：Automatic dishwasher Control System Design
Abstract: Based on the functional requirements of the automatic dishwasher, introduced by SCM AT89LS8252 and keyboard / display management chip designed automatic dishwasher HD7279A hardware control system design methods, using HD7279 is given control of the keyboard and display hardware circuit, while the system is functional software modules and software flow chart. After debugging test of the system, which can effectively achieve the control plete automatic water, heating, cleaning and disinfection, and other functions.
自动洗碗机的控制系统设计
摘要:基于自动洗碗机的功能要求,介绍了用单片机AT89LS8252和键盘/显示管理芯片HD7279A设计的自动洗碗机的硬件控制系统的设计方法,给出了用HD7279控制键盘和显示的硬件电路,同时给出了系统软件和功能软件模块的流程图。该系统经过试验调试,可有效地实现洗碗机的自动控制,完成自动进水、加温、清洗、消毒等功能。
关键词:洗碗机;控制器;键盘/显示
     Key words: dishwashers; controller; keyboard / display
1 Introduction
As digital application of information appliances, dishwashers have broad access to masses of people in the family, so that people can work from home in plex gradually liberated.

MCU Sensor-Menci
ic water level sensor
Influent solenoid valve
Temperature Control Protector
Switch 5 kw heater thermostat
Cleaning agents control box
Cleaning agents control box
Electric motors
Transmission trip switch 2
Analog Xiaodaishui temperature
Counter
Display Interface
Man-machine interface Keyboard Interface
Ringing Interface
Figure 1 Control of the dishwasher
1 引言
随着数字信息家用电器应用的普及,洗碗机已经广泛进入人民大众的家庭之中,从而使得人们能够从繁杂的家务劳动中逐步解放出来。
As a home automation equipment, such as dishwashers generally need to achieve automatic control influent, automatic detergent, cold wash, automatic temperature washing, cleaning, drainage, Disinfection, and the timing and fault alarm functions. From the point of view of control, a dishwasher usually need to meet Figure 1 shows some of the specific requirements, which involves the switching of signals there are two kinds of sensors is high, low signal detection, such as doors Switch , the water level a