This project is to develop a wheelchair beneficial to the physically disabled/challenged person using gesture. With the help of the wheelchair, the physically disabled person can move himself/herself to the desired location with the help of hand/head gestures that control the movement of the chair. This project aims to provide a feasible solution to those handicapped/disabled people who do not have the ability to move the wheelchair by themselves. These include people with the serious paralytic condition.

1. End Sem
Project
Review
Prepared by Guided by
Priyank Kapadia (18ME037) Prof. C. P.
Mazmudar
Jainik Patel (18ME039)
Jarmil Panchal (18ME040)
Ketul Supekar (18ME047)
Birla Vishwakarma Mahavidyalaya
Engineering College
(An Autonomous Institution)

2. Design and Fabrication of Gesture
Control Wheelchair for Disabled using
Arduino

3. Objective
3
To develop a wheelchair for physically disabled people
controlled by Gesture.

4. 4
Timeline
8
6
4
2
Week
1
Week
2&3
Week
5
Week
8&9
Week
11
Week
4
Week
6&7
Week
10
Lorem ipsum
Idea
Selection and
finalizing the
Objectives
Sketching on
paper and
estimating
capacity and
dimensions
Research
about the topic
and market
survey
CAD Modelling
based on the sketch
Procuring
electronics and
testing the code
Implementation
and testing of
Modifying the CAD
model according to
requirements and
analysis
Fabrication of
dummy model
Cost analysis
and Conclusion
Week
12

5. Available Products
5

6. Overall
Dimensions of
the Product
6

7. FEA Analysis
7
Wheelchair Frame
• We preformed FEA static
Analysis on the frame of
wheelchair and material is
Stainless Steel 304.
• We considered the weight
of the person as 150 kg.
• Therefore applied force is
150*9.8 is equivalent to
1500 N.

8. FEA Analysis
8
Wheelchair Frame
• Stresses developed in the
frame is under the safe
limit.
• Factor of safety is found to
be 1.3

9. Block
Diagram
9
Movement
(Left, Right, Front,
Back)
Accelerometer
Sensor
(ADXL-335)
Arduino UNO
Transmitter
Receiver
Arduino UNO
Motor Diver
Module
(L293D)
Motion of DC
Motor
(Left, Right, Front,
Back)

10. Circuit diagram
10
Transmitter
RF
Transmitter
ADXL 335
Arduino UNO

11. 11
Arduino Code
Transmitter

12. Circuit diagram
12
Receiver
L293D Motor
Driver
RF
Receiver
Arduino
UNO
Battery

13. Arduino Code
13
Receiver

14. F
Motor Torque Calculation
Assuming total force (Weight of person +Wheelchair) acting on wheelchair frame is 150
Kgf.
P*(48-x) =2*Wr *48
150*9.81*(48-x) = 2*Wr *48
X = 9 cm.
Wr = 597.79 ~ 600 N
ƩVertical forces,
2*Wc + 2*Wr = 150*9.81
Wc = 135.75 ~ 140 N

15. Considering both friction force & Inertia of wheel into consideration for Motor
Torque (Tm),
Tm = Friction force + Wheel inertia
Tm = f*r + I*α
Taking r = 15 cm
From the standard available ma speedV = 3.12 m/s
To reach max speed assume max time t = 10 s
Linear acceleration a = α * r =V/t
a = v/t = 3.12/10 = 0.312 m/s2
Angular acceleration α = a / t
α = 0.312/0.15 = 2.08 rad/s2

16. Assuming all mass is concentrated in periphery.
M = ρ * volume
Volume = 2π r*thickness(t)*width(b)
From the standard values thickness (t) = 20 mm
Width (b) = 44 mm
SubstitutingValues,
M = 2.21 kg,
I = M*R^2
I = 2.21*.15^2
I = 0.049 kg-m^2
J = 2*I
J = .01 kg-m^2
FrictionTorque,
F*r = µ *N*r
= 0.1*75*9.81*.15
= 11.036 N-m
MotorTorque,
Tm = f*r + I* α
= 11.036+.01
= 11.036 N-m
RPM,
V = π* Dia*N
N = 3.31 RPS
= 198.62 RPM
Power P = 2*π*N*Tm/60
P = 228.8 ~ 250W

17. Fixed Cost
Equipment ₹ 2,50,000
Bills ₹ 10,000
Rent ₹ 15,000
Employees ₹ 15,000
Others ₹ 1,000
Total ₹ 2,91,000
Variable Cost
Electronic Components ₹ 2,800
2 Rear wheels ₹ 3,000
2 castor wheels ₹ 500
Raw material ₹ 6,600
24V battery ₹ 5,000
Motors ₹ 7,000
Labour ₹ 1,000
Total ₹ 25,900
Fixed Cost ₹ 2,79,000
Unit Cost ₹ 25,900
Selling Price ₹ 30,000
 Total Cost = Fixed Cost + Variable Cost
 Break Even Point is Where Total Cost & Total Selling Cost is Equal
 Break Even Point indicates the No. of Unit we have sell to become
Profitable
Break Even Point Analysis

18. Unit Fixed Cost Variable cost Total Cost Total Revenue
0 ₹ 2,91,000 ₹ 0 ₹ 2,91,000 ₹ 0
1 ₹ 2,91,000 ₹ 25,900 ₹ 3,16,900 ₹ 30,000
5 ₹ 2,91,000 ₹ 1,29,500 ₹ 4,20,500 ₹ 1,50,000
10 ₹ 2,91,000 ₹ 2,59,000 ₹ 5,50,000 ₹ 3,00,000
15 ₹ 2,91,000 ₹ 3,88,500 ₹ 6,79,500 ₹ 4,50,000
20 ₹ 2,91,000 ₹ 5,18,000 ₹ 8,09,000 ₹ 6,00,000
25 ₹ 2,91,000 ₹ 6,47,500 ₹ 9,38,500 ₹ 7,50,000
30 ₹ 2,91,000 ₹ 7,77,000 ₹ 10,68,000 ₹ 9,00,000
35 ₹ 2,91,000 ₹ 9,06,500 ₹ 11,97,500 ₹ 10,50,000
40 ₹ 2,91,000 ₹ 10,36,000 ₹ 13,27,000 ₹ 12,00,000
45 ₹ 2,91,000 ₹ 11,65,500 ₹ 14,56,500 ₹ 13,50,000
50 ₹ 2,91,000 ₹ 12,95,000 ₹ 15,86,000 ₹ 15,00,000
55 ₹ 2,91,000 ₹ 14,24,500 ₹ 17,15,500 ₹ 16,50,000
60 ₹ 2,91,000 ₹ 15,54,000 ₹ 18,45,000 ₹ 18,00,000
65 ₹ 2,91,000 ₹ 16,83,500 ₹ 19,74,500 ₹ 19,50,000
70 ₹ 2,91,000 ₹ 18,13,000 ₹ 21,04,000 ₹ 21,00,000
75 ₹ 2,91,000 ₹ 19,42,500 ₹ 22,33,500 ₹ 22,50,000
80 ₹ 2,91,000 ₹ 20,72,000 ₹ 23,63,000 ₹ 24,00,000
85 ₹ 2,91,000 ₹ 22,01,500 ₹ 24,92,500 ₹ 25,50,000
90 ₹ 2,91,000 ₹ 23,31,000 ₹ 26,22,000 ₹ 27,00,000
95 ₹ 2,91,000 ₹ 24,60,500 ₹ 27,51,500 ₹ 28,50,000
100 ₹ 2,91,000 ₹ 25,90,000 ₹ 28,81,000 ₹ 30,00,000
105 ₹ 2,91,000 ₹ 27,19,500 ₹ 30,10,500 ₹ 31,50,000
110 ₹ 2,91,000 ₹ 28,49,000 ₹ 31,40,000 ₹ 33,00,000
115 ₹ 2,91,000 ₹ 29,78,500 ₹ 32,69,500 ₹ 34,50,000
120 ₹ 2,91,000 ₹ 31,08,000 ₹ 33,99,000 ₹ 36,00,000
125 ₹ 2,91,000 ₹ 32,37,500 ₹ 35,28,500 ₹ 37,50,000
130 ₹ 2,91,000 ₹ 33,67,000 ₹ 36,58,000 ₹ 39,00,000
Total Revenue; 70; ₹
2,100,000
₹ 0
₹ 500,000
₹ 1,000,000
₹ 1,500,000
₹ 2,000,000
₹ 2,500,000
₹ 3,000,000
₹ 3,500,000
₹ 4,000,000
₹ 4,500,000
0 20 40 60 80 100 120 140
Units
Break Even Aanlysis
Total Cost Total Revenue

19. Hardware Assembly

20. Thank you