Using 8051 microcontroller based washing machine control ppt
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This document describes the control system of a microcontroller-based washing machine. It includes: - Descriptions of the control knobs for load selection, water inlet selection, mode selection, and program selection. - Details of the washing cycles for heavy, normal, light, and delicate settings including fill, agitate, drain, and spin times. - A circuit diagram showing the 8051 microcontroller and connections to control motors, sensors, and indicators. - Pseudocode commands for the washing machine controller to check the program selected and run the corresponding cycle before indicating completion.
Using 8051 microcontroller based washing machine control ppt
- 2. What Is a Washing Machine? A washing machine is an electronic device that is designed to wash laundry like clothes, sheets, towels and other bedding. A washing machine is built with two steel tubs which are the inner tub and the outer tub whose main role is to prevent water from spilling to other parts of the machine.
- 3. Control knobs in washing machine: • Load select knob • Water inlet select knob • Mode select knob • Program select knob
- 4. Load select knob:- load Number of clothes low medium high Load select
- 5. Water inlet select knob:- hot cold both-mixed Water inlet
- 6. Mode select knob:- Save mode Normal mode Mode
- 7. Program select knob:- Heavy Clothes very dirty Normal Normal dirty clothes LIGHT For light dirty clothes Delicate For silk clothes
- 8. Operations:- • Fill:- water will be filled by the pump as per the load knob selected. • Agitate:- The wash basket will rotate in a clockwise direction for 10 revolutions, After that basket will stop for 2 seconds, then rotate 10 revolutions in anticlockwise direction. The process will be continued for specified minutes in cycle table.
- 9. Drain:- After agitation, the water and detergent are drained. Spin:- During spin, agitator will be stationary, only the basket will rotate at high speed. Then the moisture of clothes are removed through holes in the inner metallic basket. Indicator:- Machine ON LED ON After completion of washing cycle, buzzer sound will be generated.
- 10. Washing cycle for Heavy, Normal, Light and Delicate setting Operation Heavy Normal Light Delicate Fill water Set by load Select knob Set by load Select knob Set by load Select knob Set by load Select knob Agitate 20 minutes 15 minutes 10 minutes 5 minutes Drain 5 minutes 5 minutes 5 minutes 5 minutes Fill water Set by load Select knob Set by load Select knob Set by load Select knob Set by load Select knob Agitate 10 minutes 10 minutes 5 minutes 5 minutes Drain 5 minutes 5 minutes 5 minutes 5 minutes Spin 10 minutes 10 minutes 5 minutes 5 minutes
- 11. Circuit diagram
- 12. 0 8051 Microcontroller P2.1 P2.2 P0.2 P0.1 P0.0 P2.3 P2.4 P2.6 P2.5 P2.0 P2.7 P1.0 P1.1 P1.2 P1.3 P0.3 P0.4 Hot Cold Agitator rmotor drive Agitator rmotor drive Spin motor drive High level Medium level Low levelDrain Washing machine ON LED 0 Heavy Normal Light Delicated Hot Normal Buzzer sound Basket
- 13. Operation Signal Input/output Port pin no. Load / water level select Water level low Water level med Water level high Input Input Input P0.0 P0.1 P0.2 Water inlet Hot water knob Normal water knob Input Input P0.3 P0.4 Program select Heavy Normal Light Dedicate Input Input Input Input P1.0 P1.1 P1.2 P1.3 Machine ON Machine on indic Output P2.0 Fill water Hot water inlet Normal water inlet Output Output P2.1 P2.2 Agitation control Motor rotate in cloc direction Motor rotate in anticlock direc Output Output P2.3 P2.4 Drain Drain valve open Output P2.5 Spin Spin motor ON/OFF Output P2.6 Washing ccomplete Washing comp indic Output P2.7
- 14. Put machine ON Fill machine with water hot or normal Check program setting Agitate 20 min Drain 5 min Fill water Agitate 10 min Spin 20 min Drain 5 min Buzzer for wash complete Agitate 15 min Drain 5 min Fill water Agitate 10 min Spin 10 min Drain 5 min Buzzer for wash complete Agitate 10 min Drain 5 min Fill water Agitate 5 min Spin 5 min Drain 5 min Buzzer for wash complete Agitate 5 min Drain 5 min Fill water Agitate 5 min Spin 5 min Drain 5 min Buzzer for wash complete
- 15. Commands for washing-machine controller Labels Mnemonics Operands Comments SETB LCALL JNB SJMP P2.0 FILL_1 P1.0,LOOP_1 HEAVY Machine ON indication Machine fill with water 1st time Chk prog setng knob for heavy. if P1.0 is not set,jump to LOOP_1 If P1.0 is set,jump to HEAVY LOOP_1 JNB SJMP P1.1,LOOP_2 NORMAL Check prog setng knob for normal.if P1.1 is not set.jump to LOOP_2 If P1.1 is set, jump to NORM LOOP_2 JNB SJMP P1.2,LOOP_3 Chck prog setng knob for normal.if P1.2 is not set,jump to LOOP_3 If P1.2 is set,jump to LIGHT LOOP_3 JNB SJMP P1.3,LOOP_4 DELICATE Check prog set knob for delicate. If P1.3is not set,jump to LOOP_4 If P1.2 is set,jump to delicate DISPLAY SETB P2.7 Indicate the completion of wash cycle. LOOP_4 NOP LJMP 0000 End of program
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