Smart voice and touch controlled wheel chair

Project Title

Smart voice and touch controlled wheel chair

Project Area of Specialization Computer ScienceProject Summary

Many disabled people for the most part rely upon others in their everyday life particularly in getting starting with one spot then onto the next. For the wheelchair clients, they need consistently somebody to help them in going the wheelchair moving. By having a wheelchair control framework will help impeded people become autonomous. The framework is a remote wheelchair control framework that utilizes a voice acknowledgment framework for activating and controlling every one of its developments. The wheelchair reacts to the voice and touch order from its client to play out any development capacities. It coordinates a microcontroller, remote , voice acknowledgment processor, engine control interface board to move the wheelchair. By utilizing the framework, the clients can work the wheelchair by simply speaking to the wheelchair throw mobile app.

The general mechanical get together is controlled by two 14A/24V/200W DC engines that have coordinated lockout control. The framework is tried utilizing a voice start secret phrase and English movement control orders: " (forward (back), (right), (left), (Stop) ". Tried to perform well in clear and uproarious conditions with safe development.

• The fundamental piece of the plan is the control of wheelchair development. There are four conditions of movement considered, pushing ahead, moving the other way, moving left and right. For speed, the client can utilize a moderate or quick speed order.

• The framework starts apply on the flexible voltage discourse acknowledgment circuit. For quick conditions, the framework will give increasingly current to the engines

. • On the off chance that the client doesn't need the wheelchair to move at a fast, the low-speed order arranged by apply a low current source to the engines. The headings and conceivable development of the wheelchair are as per the following

1.  Forward: Both engines are forward way.
2. Reverse: Both engines are backward bearing
3.  Left: Left engine halted and right engine forward way.
4. Right: Right engine halted and left engine forward way.
5. Stop: Both engines are halted

Project Objectives

The scope of the project is to develop a smart wheel chair with multiple sensors capable of being operated by most disabled and elderly people. The wheel chair is capable of handling up to 85-90 kilogram weight and is powered by powered by a 12-volt 26Ah Lino acid battery. The wheel chair is designed to be used indoor on a smooth surface but it can also be used on uneven surfaces and surfaces which are slightly inclined. The estimated cost of the entire project is 68,000 PKR. The project is scheduled to be completed in 6 to 7 months’ time. Voice Controlled, Mobile Application and mechanical part are major objectives.

Project Implementation Method

Implementation Project Detail The implementation of the smart wheel chair was broken into two halves, hardware and software.

The hardware consists of the wheelchair itself and DC motors and battery. The software part is composed of programing and designing. The programming was done in Arduino IDE while circuit designing and testing was performed using Fritzing open source program. Hardware The hardware is designed in such a way that the wheel chair easily moves on a plane surface. The two DC motors provide necessary torque required to move flawlessly with 80-95kg patient. The motors are synced such that they both rotate at equal rpm to move the wheelchair in a straight line. To move the wheelchair to the right or left their respective motor rotates the wheel and the direction is easily and safely changed by the user. The motors are powered by a single DC LINO 12-volt 26Ah rechargeable battery. The battery also provides necessary power to the electronics of the project. A single Arduino mega is the brain of the smart wheel chair. It connects the Bluetooth, the motor drive circuits, the MPU sensor and the buck boost circuits. The shaft of the motor is connected to the wheels via a strong chain sprocket mechanism. This mechanism was selected for its durability and ease of maintenance.

Mechanism The working mechanism of the wheelchair is both simple and effective. Firstly, using a control device, signal is sent to the Bluetooth module connected to the Arduino mega board. This interprets the signal to switch on/off the motor drive circuits. Each motor has its own dedicated drive circuit. The current from the motor drive goes into the motor which in turn rotates the wheel it is connected to via chain sprocket mechanism. This same process is also applicable when using MPU as the control device. The signals are directly provided to the Arduino board without the need of Bluetooth module. The MPU detects hand movement of the patient. Each specific voice command to a specific movement of the wheelchair.

Benefits of the Project

Many disabled people for the most part rely upon others in their everyday life particularly in getting starting with one spot then onto the next. For the wheelchair clients, they need consistently somebody to help them in going the wheelchair moving. By having a wheelchair control framework will help impeded people become autonomous. The framework is a remote wheelchair control framework that utilizes a voice acknowledgment framework for activating and controlling every one of its developments. The wheelchair reacts to the voice order from its client to play out any development capacities. It coordinates a microcontroller, voice acknowledgment processor, engine control interface board to move the wheelchair. By utilizing the framework, the clients can work the wheelchair by simply speaking to the wheelchair throw mobile app.

 #1 Well Being: The smart wheel chair helps the elderly and disabled people move around without any danger of falling down or losing their balance. It helps make them less dependent on others for small everyday tasks.

Goal #2 Unemployment is rising globally and large number of individuals with a job is underemployed. Our project helps these people to earn a decent living by working part time or full time to produce wheel chairs and by doing so it helps end unemployment and poverty.

Technical Details of Final Deliverable

The smart wheel chair has a power switch which when it is turned on the system starts by enabling the Arduino microcontroller. The mobile phone which works as a transmitter to the Arduino module has a dedicated application which controls the direction of the wheel chair movement and to stop the movement. The transmitter sends a signal to the Bluetooth receiver using radio waves. The receiver then delivers the signal to Arduino which then drive the respective motor/motors. The working range of a Bluetooth system is 100 meters. In case an obstacle comes in the path of the wheel chair the sensors will send signals to the Arduino board which will stop the movement in that particular direction.

Final Deliverable of the Project HW/SW integrated systemCore Industry ITOther Industries Education Core Technology OthersOther TechnologiesSustainable Development Goals Reduced InequalityRequired Resources

Item Name	Type	No. of Units	Per Unit Cost (in Rs)	Total (in Rs)
			Total in (Rs)	66950
Wheel Chair	Equipment	1	9000	9000
Battery	Equipment	1	12500	12500
Arduino Module	Equipment	1	1950	1950
MPU sensor	Equipment	1	2200	2200
Jumper Wire	Equipment	1	600	600
24V DC gear Motor	Equipment	2	4500	9000
Gear Box	Equipment	2	1500	3000
Chain Sprocket	Equipment	2	1700	3400
Bluetooth Module	Equipment	1	2050	2050
Buck Converter	Equipment	1	1900	1900
Boost Converter	Equipment	1	1850	1850
Shaft	Equipment	2	1100	2200
Bearing	Equipment	2	1200	2400
Motor Driver Circuitry	Equipment	2	1250	2500
Button	Equipment	2	500	1000
Sensors	Equipment	2	700	1400
Prinnting	Miscellaneous	3	1500	4500
Other expanse	Miscellaneous	1	5500	5500