Automatic Washing Machine

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BACKGROUND
Theory
For centuries, people on sea voyages washed their clothes by placing the dirty
laundry in a strong cloth bag, and tossing it overboard, letting the ship drag the bag
for hours. The principle was sound: forcing water through clothes to remove dirt
The earliest manual washing machines imitated the motion of the human hand on
the washboard, by using a lever to move one curved surface over another and
rubbing clothes between two ribbed surfaces. This type of washer was first patented
in the United States in 1846 and survived as late as 1927 in the Montgomery Ward
catalogue. The first electric clothes washers, in which a motor rotated the tub, were
introduced into America about 1900. The motor was not protected beneath the
machine and water often dripped into it causing short-circuits and jolting shocks. By
1911, it was possible to buy oscillating, cylinder, domestic washing machines with
sheet metal tubs mounted on angle-iron frames with perforated metal or wooden
slat cylinders inside.
Starting in the 1920s, white enameled sheet metal replaced the copper tub and
angle-iron legs. By the early 1940s, enameled steel was used and sold as being
more sanitary, easier to clean and longer lasting than the other finishes. The sheetmetal skirt was also designed to extend below the level of the motor mount. In the
early 1920s, a number of Canadian machines were offered with built-in gas or
electric water heaters. By the 1930s, domestic water heaters were in many homes
and the washing machine heater was of little use. The addition of a motor-driven
drain pump at this time moved the machine one step closer to complete
automaticity. The next development of the washing machine was the fitting of a
clock timing device which allowed the machine to be set to operate for a predetermined length of wash cycle. Now, the operator no longer needed to constantly
monitor its action. By the early 1950s, many American manufacturers were
supplying machines with a spin-dry feature to replace the wringer which removed
buttons, and caused accidents involving hair and hands. In 1957, GE introduced a
washing machine equipped with 5 push buttons to control wash temperature, rinse
temperature, agitation speed and spin speed.
Research
If there's one household appliance most of us simply could not do without, it's the
clothes washer. If you've ever been without your machine for a few days or weeks,
you'll know just how hard it is to wash clothes by hand. So we inspired to develop a
new kind of washing machine that would surely help people to make their life more
comfortable.
The “Automatic Washing Machine” is a kind of washing machine that completes the
entire clothes washing cycle without any effort from the user. It will rinse, wash,
agitate, and spin dry clothes all on its own. And buzz indicating that it’s done

Procedures
Automatic Washing Machine
1. You put your clothes in the machine then put detergent and fabricon before start.
2. You set the program you want and switch on the power.
3. The programmer fill the water valves enter the machine until it reach the max
level, the programmer switches off the water valves.
4. After it stop, the tray holding the detergent will open and the controls.
5. Will pour onto the water. After it get emptied, it will be automatically closed.
6. After the tray closed, the machine will start mixing for 15 minutes.
7. And stop for 10 seconds and continue to mix for 15 minutes again.
8. After it stop for the second time, drain valve automatically.
9. Fill another water then stop after reach the maximum level. Then mix for 5
minutes, drain. It will repeat for 3x.
10. After it drain for the 3rd time, Fill another water that would stop when it reach
the low level.
11. The fabricon that inside its own compartment will open and close when its get
emptied.
12. Mix for 1 minute and stop for atleast 5 minutes. Then drain automatically.
13. Dryer will start and buzz, indicating that its done.
Test and Evaluate
Apparatus
Automatic Washing Machine is an electrical appliance that controls all aspects of
clothes washing. An Automatic Washing Machine can hold the maximum of 5Kg of
clothes. Clothes should put on the machine before starting the process. The
detergent must be put on the compartment provided for it. In every 1Kg, 25ml of
fabricon.
Findings
Data
FHL(Float High Level) is a switch/sensor that reach maximum level of the water.
FLL(Float Low Level) is a switch/sensor that detect minimum level of the water.
Counter (Set) is a device that counts automatically and can be reset .
Timer is a device that can be preset to start or stop something at a given time or
that sound after a set period of time.

Input and Output Devices
Input/Contacts

Timer/Counter

Output

0.00 Start
(Valve)

T0000 15 minutes mix

100.0 Fill Water

0.01 FHL(sensor)

T0001 10 seconds stop

100.1 Drain (Valve)

0.02 FLL(sensor)
Detergent (Valve)

T0002 1 minute mix

100.2 Fill

0.03 Stop
(Valve)

T0003 Standby (timer)

100.3 Fill Fabricon

0.04 Reset

T0004 5 minutes stop

100.4 Buzz

0.05 FEL(sensor)

C0000 3 time (set)

0.06 FML

100.5 Motor Rotate

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