final year 3rd ppt

7/22/2019 Final Year 3rd Ppt

http://slidepdf.com/reader/full/final-year-3rd-ppt 1/27

HOME AUTOMATION FOR

DISABLED PERSONS

http://www.google.com.pk/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=01VU_a-fLvwHyM&tbnid=R89FGUWUlkTQBM:&ved=0CAUQjRw&url=http://www.co.olmsted.mn.us/prl/propertyrecords/PropertyTaxes/Pages/BlindDisabledHomestead.aspx&ei=I1SvUc_DE8yo0wXJ1IGABg&bvm=bv.47380653,d.ZG4&psig=AFQjCNEt4BbYwtLqPNrwl_G8rEPwrNdyPQ&ust=1370531228800718



GROUP MEMBERS

BAKHTAWAR BHATTI 100180

HARIS KHAN 100255

NAI LA NAWAZ 100153

http://www.google.com.pk/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=01VU_a-fLvwHyM&tbnid=R89FGUWUlkTQBM:&ved=0CAUQjRw&url=http://www.co.olmsted.mn.us/prl/propertyrecords/PropertyTaxes/Pages/BlindDisabledHomestead.aspx&ei=I1SvUc_DE8yo0wXJ1IGABg&bvm=bv.47380653,d.ZG4&psig=AFQjCNEt4BbYwtLqPNrwl_G8rEPwrNdyPQ&ust=1370531228800718



The home automation system in which thedisabled person can control the appliances withtheir hand movements.

Circuitry includes the microcontrollers, relays,motor driving circuits , sensors.

Objective is to make a viable option for theelderly and disabled who would prefer to stay inthe comfort of their homes rather than move to ahealthcare facility



BLOCK DIAGRAM

CONTROL

UNIT

APPLIANCES

LCDKeypad

http://www.google.com.pk/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=_X1Fj93_ZJUAmM&tbnid=xcM7dZUYUH460M:&ved=0CAUQjRw&url=http://depositphotos.com/4641487/stock-illustration-Telephone-keypad.html&ei=4eOuUYeSEKr60gWUi4DIDA&bvm=bv.47380653,d.d2k&psig=AFQjCNEsGPZebWq3S1pZ4WwMQxN4QhaEzQ&ust=1370502439988690


http://www.google.com.pk/url?sa=i&source=images&cd=&cad=rja&docid=lqMj7Ms-cJQP5M&tbnid=CsEzEtGym-dyhM:&ved=0CAgQjRwwAA&url=http://www.ebay.com/sch/Women-/36186/i.html&ei=yeSuUbDYDe-y7AbkxICoBQ&psig=AFQjCNF-_MxUfrCtuLLhCTf155TZmYJ0cQ&ust=1370502729327079




Study of the flex sensor.

Study of its working.

Testing of flex sensor with different circuits.

Overview of keypad and LCD interfacing.

Overview of 8051 controller.



A device which detects or measures a physical

property and records, indicates or responds.

We have to deal with flex sensor



We have to design a glove that takes the input

hand movements made by the user, to detectthose movements.

we come across sensors to detect the hand

motion ( bending of finger).

we took a research on different sensors

available. finally !



Sensors that change in resistance depending upon theamount of the bend on the sensor

They convert the change in bend into electricalresistance

The more it bend , the more will be the resistance valueor vice versa



Inside the flex sensor, there is carbon resistive elements

within a thin flexible substrate more carbon means lessresistance.

When the substrate is bent , the sensor produces theresistance output relative to the bend radius



We have tested our sensor in different ways

DMM

Adjustable buffer



Then we have to connect our sensor to the

instrumentation amplifier to increase its output

range



BY



Is a matrix of push-buttons aligned in rows and columns to provide user

input.

3*4 keypad consists of 3 columns and 4 rows, hence the name. Whenever

the user taps one button, the column and the row corresponding to that

button are shorted



Keypad is used to control the program in anorganized way.

It is the input to the control unit. It is used to decide the mode which we want

to choose. Additionally it is used to input the text in the

Text Mode of the input.



The method used to read such input is called Scanning ,

connect the rows and the columns to the microcontroller, setthe columns as outputs, rows as inputs (or vice versa) and startfeeding a pattern of inputs to the columns while checking thereadings of the rows.

If we tied all rows through pull-up resistors to Vcc, all rowinputs are typically 1s (1111), now if you start feedingcolumns with the following pattern, 011, 101, 110, we cancheck which row conducts the 0 signal to the controller, thus,we'll detect the shorted row and column.



An alphanumeric LCD is a type of LCDs that only displays English letters,numbers and some ASCII characters

those LCDs contains a controller unit that processes the input and forms thedisplayed character on the LCD, most alphanumeric LCDs have a parallelinterface, some other LCDs have a serial interface to minimize theconstruction complicity.

Alphanumeric LCDs comes in different sizes, the size describes the number ofcharacters an LCD can display, common sizes are 16x2, 20x2, 16x4ETC a16x2 has 2 rows and can display 16 characters on each row.



- Power Supply Pins:

Vss : Ground reference (0V)

Vcc : +5V supply voltage

Vee : Contrast pin, typically connected to GND via a resistor (0Ω - 5kΩ), change the value to change

the contrast.

- Control Bus Pins:

RS : Register Select, used to set the LCD either to command mode or to data mode.

R/W : Read/Write select, used either to read characters from LCD or to write new characters. E : Active low Enable signal.

- Data Bus Pins:

D0-D7 : used to pass 8Bit character data, you have the choice either to use only 4Bit bus (D4-D7) or to

use the whole data bus.

- Backlight Voltage Pins:

A : Anode (+5V)

K : Cathode (0V) used to turn ON/OFF the backlight LED of your LCD.



BY



A bipolar junction transistor (BJT or bipolar

transistor) is a type of transistor

That relies on the contact of two types ofsemiconductor for its operation.

BJTs can be used as amplifiers, switches.

http://www.google.com.pk/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&docid=ULsx91SwfnNKjM&tbnid=Y2N_es9mbm28EM:&ved=0CAUQjRw&url=http://www.proto-advantage.com/store/product_info.php?products_id=1300007&ei=HA7zUsJE4pzQBb2JgNgH&psig=AFQjCNHof1wZBPUtWkCshxWcElyjgG5MJw&ust=1391746948719763



Is a two-lead semiconductor light source thatresembles a basic pn-junction diode, except

that a LED also emits light.

When an LEDs anode lead has a voltage thatis more positive than its cathode lead byapproximately 0.6 to 2.2 Volts, current oftenflows and light is often emitted..

http://www.google.com.pk/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&docid=koAAyOCTnmHtuM&tbnid=xHmc3tUjQb_NOM:&ved=0CAUQjRw&url=http://ja.wikipedia.org/wiki/%E7%99%BA%E5%85%89%E3%83%80%E3%82%A4%E3%82%AA%E3%83%BC%E3%83%89&ei=jQ7zUqBlh7TRBafFgdAN&psig=AFQjCNFNEwAfK3fSEinzx8xERG6hw5enNw&ust=1391747064147726

http://www.google.com.pk/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&docid=R2L_7065rhZZIM&tbnid=OEgITQjQWihj_M:&ved=0CAUQjRw&url=http://www.digikey.com/product-detail/en/CEP-4411AC/102-1125-ND/412384&ei=7A7zUsXJHYT50gWl0oGYBw&psig=AFQjCNE3nRMD8rCDpwdxtOGkrB_wwDyawQ&ust=1391747171746505



A buzzer or beeper is an audio signaling

device

Typical uses of buzzers and beepers include alarm devices

timers

confirmation of user input such as a mouse

click or keystroke.

http://www.google.com.pk/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&docid=R2L_7065rhZZIM&tbnid=OEgITQjQWihj_M:&ved=0CAUQjRw&url=http://weishi.en.hisupplier.com/product-list.html&ei=LQ_zUrOqHqHG0AWDnYCoCQ&psig=AFQjCNE3nRMD8rCDpwdxtOGkrB_wwDyawQ&ust=1391747171746505

http://www.google.com.pk/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&docid=R2L_7065rhZZIM&tbnid=OEgITQjQWihj_M:&ved=0CAUQjRw&url=http://www.digikey.com/product-detail/en/CEP-4411AC/102-1125-ND/412384&ei=7A7zUsXJHYT50gWl0oGYBw&psig=AFQjCNE3nRMD8rCDpwdxtOGkrB_wwDyawQ&ust=1391747171746505



Flex sensors or any other bending circuits orany other sensors??

To add the option of transferring from oneoption or the other??

final year 3rd ppt

Documents