Based On Microcontroller System Design Automatic Washing Machine

Because of its extremely high performance-price ratio, the single-chip computer has been paid great attention to ever since it came out in 1970s of 20th Century, and has gained an extensive applicable field and fast development. Among all kinds of MCS-51 is the most typical and representative one.Household washing machines in everyday life, has been widely used, the production of washing machines, heavy domestic work is from the people, the liberation of people save a lot of time and effort. The invention of automatic washing laundry in the history of a major invention, by the designer to make this process more intelligent laundry washing machine. It not only saves manpower, but also to further expand the scope of the washing machine. You can use the automatic washing machine micro-controller size, texture, water flow, select the size and strength and the duration and how much water. In order to achieve fully automated laundry. Now more and more highly automated washing into the washing machine, as long as the machinery and clothing, simply press the two keys, the system will automatically computer-controlled water through the clothes washing machine can automatically sense the weight, it will automatically add the appropriate water and detergent, the amount of washing can automatically set the time and intensity of washing, automatic washing drying after washing, even the clothes dryer, thus saving time.AT89C51 chip design as the core, accompanied by the necessary peripheral circuits, combined with SCM systems, automatic washing machines, including the 5V DC power supply. On the hardware side, in addition to the CPU using two seven-segment, LED digital tube display carried out to show the value of object-oriented guidance; the user presses the select button, in the laundry process shows the selected code; after washing, indicating the remaining time (minutes), and flash. The use of dynamic scanning LED display. Can accurately work through the LED display status and time. Washing machine and set about working conditions, the switch function key to select the button for the laundry process to start laundry, laundry button to pause or continue the process. Laundry bucket water level switch is used to detect water levels, water shortages or the need to add laundry, micro-controller will close the case to determine whether water. For the water, and then open the inlet valve until the water level switch is turned off. Safety switch for dehydration, to determine whether the washing machine lid open. Cover open alarm, open the lid if the case of dehydration through the alarm, closed the lid, and then to continue until dehydration; external buzzer circuit is mainly used for touch-tone or buzzer alarm use. Circuit consists of four silicon micro controller triac output control signals to the motor or solenoid valve switching operation, AC power from the role of SCR switch circuit. Washing machine water supply, drainage, movement forward in the process of washing, on the contrary, in fact, the relationship by controlling the four SCR to achieve.The main function of washing the clothes must be complete washing, rinsing, dehydration. The combination of these three functions can be formed of the total 9 choices the user to select the button control panel (start/pause button), select the wash program implementation. Cleaning and flushing the motor through the control of forward and reverse, to reach the main purpose of washing clothes. In the washing and rinsing process, you will need to reach the requirements set Sheng bucket level. If there is no water, or face water shortages, there will be water. Dehydration of muscle action to move through to achieve, and at the same time, the valve is opened drainage requirements dehydration, precisely because the drainage valve open, you can dehydration, washing motor speed when the motor speed of transmission is not the same.Software in assembly language programming. SCM process design and implementation through the washing system of monitoring the entire washing process to determine and control, and human exchange.Through this design makes me a better understanding of the basic microcontroller circuit, control circuit design and simulation of how the basic method of debugging, so the exercise of my study, design and development of software and hardware capabilities.