Presentation on:-Powered Wheelchair

Submitted by:-1. Raghav Bagga (K10186)

2. Utkarsh Kumar (K10185)3. Munfed Khan (K10452)4. Sarafraj (K10444)

Contents:-• Overview• Introduction • History• Technical specifications• Approach & method• Future work• Applications• Advantages

Overview:-

• An electric-powered wheelchair is a wheelchair that is moved via the means of an electric motor and navigational controls which is usually a small joystick mounted on the armrest, rather than manual power.

• It is designed to have two major components, the power base (containing the motors, wheels, batteries and control module) and the seating component. Each component (power base and seat) are offered with a wide variety of options.

Introduction:-

• A motorized wheelchair or electric-powered wheelchair is a wheelchair that is propelled by means of an electric motor rather than manual power.

• Motorized wheelchairs are useful for those who are not able to impel a manual wheelchair. They may also be used not just by people with conventional mobility impairments, but also by people with cardiovascular and fatigue based conditions.

• Electric wheelchairs have enhanced the quality of life for many people with physical disabilities through the mobility they afford.

• The selection of power chair will rely on many factors; including the kind of surface setting the chair will be driven over, the need to settle thresholds and curbs, and clearance widths in accustomed environment.

• The most fundamental job of the chair is to take input from the user, usually in the form of a small joystick, to move the person in the preferred direction.

History:-

• The foremost electric wheelchair was invented by George Klein with the purpose to help the wounded soldiers of the World War II. With time, it has evolved into many designs and forms.

• The power chairs comprise a range of functions like reclining, tilting, seat elevation, chin controller, hand controller and many more.

• Some of the models are portable that is they can be disassembled and carried along while travelling.

• The electric wheelchair is characteristically categorized into two categories:-

1. The front wheel powered chair: It is a power chair for indoor purposes. This is a four wheel driven chair and is most flexible among the lot.

2. The rear wheel powered chair: It is a power chair facilitated for outdoors. Being rear wheeled, they are appropriate for rugged roads.

Technical Specifications:-

• Hydraulic cylinders are fitted at the base for the proper movement of the seat in both up and down directions.

• Small LED bulbs are fitted at the base so that the track is easily visible.

• The battery charger will usually plug into the powered wheelchair control unit where the batteries are attached. This means that the user doesn't have to worry about lifting or refitting batteries.

Approach and Method:-• The purpose of Power Wheelchair Trainer is to

assist in the training of children and adults with severe motor impairments to use a power wheelchair. To facilitate this, a prototype of the Power Wheelchair Trainer was developed and produced.

• The overall mechanical design of version of the Power Wheelchair Trainer was based on the version design because that design has received positive feedback from therapists concerning ease of loading and unloading manual wheelchairs.

• The control system, including circuit boards, cables, connectors, joystick, remote, and software were collected & gathered from the raw materials.

• The remaining mechanical components of the Power Wheelchair Trainer, including frame, platform, mounting systems, housing for the joystick, and tray were produced by the process of welding.

Future work:-• The Hum-power controller presented in this

project proved to be promising and for future commercialization of this product a number of improvements are required.

• For truly autonomous control of the today’s powered wheelchair it is important to develop an indoor/outdoor guidance system with obstacle avoidance capabilities.

• The original prototype developed in this project is capable of handling analog inputs from distance sensors such as sonar and infrared proximity sensors.

• By taking advantage of these sensory inputs in the final product the Hum-power controller would be able to handle obstacle in its route.

• With the immerging WiFi based system the Hum-power controller could be linked to smart homes with positioning capabilities so that minimal effort would be required for the user to navigate to a desired point in the house.

Applications:-

• Going outside the home• Keeping track of money and bills• Preparing meals• Doing light housework• Taking prescription medicines in the right amount

at the right time• Using the telephone

Advantages:-

• Ability to mount himself/herself on this powered wheel chair.

• Height and the level of the seat can be maintained by the person himself. It can be adjusted to the ground level or to a maximum height of 2.5ft

• Maintain the speed of this powered wheel chair in accordance to the needs.

• Arm rests are movable so that the person can transfer himself/herself to the bed on its own.

• Ability to dismount himself/herself from this powered wheel chair.

Thank you!!