Ins Manual for Hand Gesture Controlled Wheelchair

8/18/2019 Ins Manual for Hand Gesture Controlled Wheelchair

1/13

HAND

GESTURECONTROLLED

WHEELCHAIR

A User’s Manual

Prepared by:

Team Gesture

AbstractA Wheelchair System that give users a new means

of control. The hand gesture technology

incorporated with the device enables a user with

weak upper body muscles to manipulate the

movements of this mobility device.


2/13

Table of Contents

I. Introduction ............................................. 1

II. Device Parts ............................................. 1

III. Device Controls (Hand Movements) ..... 4

IV. How to Use the Device ........................... 6

V. Specifications Table ............................... 8

VI. Safety Reminders and Maintenance ..... 9


3/13

1

I. Introduction

The hand gesture controlled wheelchair is an electric or

motorized wheelchair device which provides new means of control a

physically challenged individual’s mobility companion, the wheelchair.

This device uses hand movements or “gestures” for the wheelchair's

control. It also features an LCD screen connected to the wheelchair so

that the movement status could be seen clearly. A user manual will beprovided to ensure that the users could get enough information about

the device. The manual will give them a better understanding of the

device’s capabilities. The user manual will also give warnings or

safety reminders regarding the use of this device.

II. Device Parts


4/13

2


5/13

3

Description:

Controlling Module (Microcontroller) – the module

which controls the flow of information or data, as

well as its evaluation or processing and execution.

Controller (Accelerometer) – the circuit which

calculates the acceleration in the user’s hand

gestures or movements in order to be used as

reference for 3d positioning or direction.

LCD Module – it displays the information or status

regarding the wheelchair’s movements.

Motors – responsible for driving the wheels of the

wheelchair by means of applying rotational force

on to it.

Motor Driver – responsible for manipulating or

controlling the motor’s rotation. It accepts input

commands or signals coming from the controlling

module to manipulate the motors.

Toggle Switch – a switch was provided for

emergency situations if ever the system

malfunctions during run time. Aside from that, the

switch provides the flow of power on to the circuit

which means that it is the one responsible for

supplying power to the circuit in order to stop and

start its operation.

Reclining Break – serves as the switch or

manipulator for the reclining feature.


6/13

4

Assistive Handles – serves as handles for other

persons in order to aid the mobility of the user if

ever the circuitry fails.

Extended Back Support – added in order to

increase the support up to the user’s head.

III.

Device Controls (Hand Movements)

Neutral Hand Position

The neutral hand position indicates the standby or stop

mode of the hand gesture controlled wheelchair. The

stop or standby mode could also be initiated when the

back of the hand/accelerometer’s angel of inclination is

within the range of 40 degrees from either left or right


7/13

5

directions and 10 degrees from either the upward or

downward directions.

Forward Hand Movement

When the back of the hand or the accelerometer is

moved at a downward direction with an inclined angle

movement of 91 to 130 degrees from the neutral hand

position, the forward direction movement is activated.

Reverse Hand Movement

The reverse direction movement of the hand gesture

controlled wheelchair could be triggered by moving the

back of the hand or the accelerometer at an upward

direction. The controller should reach at least 91

degrees of inclination from the neutral hand position

and 120 degrees at most.

Right Turn Hand Movement

The Right Turn Direction Movement of the hand

gesture controlled wheelchair could be accessed by

turning or moving the back of the hand/controller

(accelerometer) on the right side direction and should

at least attain 41 degrees of inclination from the neutral

hand position and 170 degrees at most.

Left Turn Hand Movement

The Left Turn Direction Movement of the hand gesture

controlled wheelchair could be accessed by turning or

moving the back of the hand/controller (accelerometer)

on the left side direction and should at least attain 41


8/13

6

degrees of inclination from the neutral hand position

and 170 degrees at most.

IV. How to Use the Device

Basic Operation1. The user must first sit on the wheelchair and then turn

on the circuitry (refer to II for the position of the switch).

2. The user could either use the strap provided or just

hold the accelerometer or sensor.

3. The user must make a hand movement or move the

sensor according to the movement conditions in order

for the wheelchair to move in certain directions (refer to

the image and instructions at III.)

4. The wheelchair will then start moving once the hand

movement was made or the sensor was moved to that

certain position. Take note that the wheelchair’s

direction movement is proportionate to the sensor’s

direction or positioning.

The Reclining Feature

1. The user must first sit on to the wheelchair.


9/13

7

2. The user or an assistant must pull and hold the

reclining trigger or break that could be found at the right

side arm rest of the wheelchair device.

3. Once the reclining trigger or break was pulled and hold,

the user could start pushing the back of the wheelchair

in backward direction. It could now be noticed that the

back support of the wheelchair could be moved.

4. If the user feels comfortable with the reclined position

where he or she is in, the user or the assistant could let

loose of or release the reclining break or trigger so that

the wheelchair’s back could be locked on that position.

5. If the user wanted to set the wheelchair’s back on to its

original position or a different reclined position (in a

position that is higher than the current reclined

position), it is recommend that an assistant should help

him or her. Again, the user or the assistant must first

pull and hold the reclining trigger so that the

wheelchair’s back is unlocked from position, then an

assistant from behind must push the wheelchair’s back

in forward (or upward) direction until the wheelchair’s

back is in its original position or desired position.

Afterwards, the reclining trigger must again be release

so that the wheelchair’s back is locked in place once

more.


10/13

8

V. Specifications Table

Seat Width 16" - 20"

Seat Depth 16"

Seat-to-Floor Height 19.5"

Overall Width 24" - 28"

Overall Length 42"

Overall Height 50"

Front Wheel Size 8"

Rear Wheel Size 24"

Arm rests Full length (9.5")

Leg rests Elevating

Extended Neck-Head Support Yes

Speed (No Load) 15 - 20 km/h

Weight Carry Limit 50 kgs. - 60 kgs.

Maximum Weight Carry Limit 70 kgs.

Controller Accelerometer (viaMovements/Gestures)

Power Source 12 V 32 Ah

Supply Life Approx. 6 - 12 hrs.


11/13

9

VI. Safety Reminders and Maintenance

The hand gesture controlled wheelchair is a device which

uses hand movements or gestures for control. This device is not

recommended to be used for/by:

1. Individuals which have severe hand shakiness

Too much hand shakiness could trigger unwanted

movements which could harm the user.

2. Individuals which have mental illnesses

Mentally challenged individuals might not fully

understand how the wheelchair’s system works.

Due to this, the usage for such individuals is

prohibited as it could hurt him or her or the people

around him or her.

3. Individuals exceeding the weight limit of 70 kgs.

As of this moment, the maximum recommended

weight is 70 kgs. If a much heavier individual used

this wheelchair, it might not function properly.

4. Inclined surfaces and rocky roads or paths

There is no assurance that this wheelchair system

could be able to carry an individual because it

always depend on two factors, first one is the

weight of individual and the second is the angle of

the inclined surfaces. It is too dangerous to take the

risk because it could severely hurt the user.

5.

Long distance travels


12/13

10

This wheelchair system is not designed for

continuous or non-stop driving. Therefore it might

not be able to withstand traveling long distances as

the battery might run out of charge while the user is

on the road. In addition, it is too dangerous to drive

wheelchairs on main roads where heavy duty

trucks are located so we discourage users to use

this device for such purpose.

As for maintenance, the hand gesture controlled wheelchair

does not require special calibration of parts or components. Although

there is one thing that regularly needs to be done, that is charging the

battery. If you had a lead acid battery charger, you could just charge

this for about 30 minutes to 1 hour. If you don’t have a lead acid battery

charger, you could go to the nearest automotive supplies and parts

shop near your place and let them charge the battery for you which

costs around P 30.00.


13/13

THANK YOU FOR READING!

Ins Manual for Hand Gesture Controlled Wheelchair

Documents

Transcript of Ins Manual for Hand Gesture Controlled Wheelchair