hmc presentation
DESCRIPTION
A presenstation on HmcTRANSCRIPT
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Universiti Teknologi Malaysia
Head Movement ControlWheelchair
(HM Wheelchair)
Agilent Malaysia Innovator Award 2007
Team Members:Mohd Adib bin SarijariSyed Norazizul bin Syed NasirAbdul Rahman Bin M.Asmuei
Team Supervisor:Assoc. Prof. Dr. Rosbi Mamat
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Background of the Problem Objectives Target Users Product Descriptions Product Features Market Potential RAC-Technological Aspects RAC-Tests Results
Conclusion
Agilent Malaysia Innovator Award 2007
Universiti Teknologi Malaysia
Presentation Layout
Cari gamba said tgh wat
mekanikal
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Agilent Malaysia Innovator Award 2007
Universiti Teknologi Malaysia
Background of Problem
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To assist severely disabled1 person tocontrol their wheelchair with headmovements.
To grant the severely disabledpersonbecoming more mobile and enjoy a betterlife.
1severely disabledmeans physically challenge people thatcannot use their hands and legs in normal life
Agilent Malaysia Innovator Award 2007
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Objectives
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Cap with movementdetection & wirelesscomm.
Wireless commbetween HM(headmovement)controllerand base controller
C for headmovementprocessing &wireless comm.
Agilent Malaysia Innovator Award 2007
Universiti Teknologi Malaysia
Product Descriptions
Motorized platform
with C forintelligence motorcontrol & obstacleavoidance
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Head movement control:Motorizedwheelchair is controlled by the headmovements.
HM part is very small/compact & lightwhich can be mounted easily on cap, headband, ears etc.
Infra Red sensor:For obstacles avoidance.
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Product Features
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Safety features:Bumper sensors stop when platform hit
surrounding objects
emergency STOP button useful for emergencycases
Alternativelywheelchair can be controlled byjoystick. Useful for interruption by the trainingsupervisor during the training of using theHMwheelchair.
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Product Features cont
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Integrated microcontroller intelligencecontrol Head movements detection & decoded to actual
wheelchair motion
Obstacles detection & avoidance through Infra-redsensors
Handling wireless comm between HM(Headmovement) controller & base controller.
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Agilent Malaysia Innovator Award 2007
Product Features cont
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Wireless communication is used tocommunicate between HM controller & basecontroller therefore:
No direct contact between head movementcontroller and base controller
less wiring and less messy.
Product Features cont
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Features ConventionalWheelchair
HMC
Motorize Unmotorized operation: use
hands to operate.
Motorize operation:
fully driven by motor.DirectionControl
Direction is fully controlledby hand.
Directions are controlby head movements.
Obstacleavoidance
No obstacle avoidancefacility
Automatic obstacleavoidance (for safetyreason).
Alternativecontrol
Has to be manually pushed Alternative controlusing joystick.
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Conventional VS HM
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Paraplegia:BOTH LEGS are paralysed.
Quadriplegia:ALL FOUR LIMBSi.e. arms and legs are paralysed.
SPINAL COLUMN STUCTURE
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Target Users
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About12 to 53 new spinal injuries permillion population in the developedcountries every year1.
Current estimates: 250,000 - 400,000individuals living with Spinal Cord Injury.
So there is marketforHM
1www.spinalcord.uab.edu
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Market Analysis
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TheseHM wheelchair will be a greatsolutionfor disable people especially forpeople with Quadriplegia& Paraplegia
injuries. We hope that this project will serve as
UTMs & Agilent contribution to thephysically challenged community.
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Impact Toward Society
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Process Flow
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Mar April May June July Aug Sept
Mohd Adib Sarijari HMController Part
Design circuit
Test and calibration
Integration with base controller
Abdul Rahman Samuei Base Controller Part
Design circuit
Test and calibration
Integration with upper controller
Syed Norazizul Syed Nasir Mechanical Part
Design wheelchair
Fabrication of all mechanical part
All team members
Discussion
Integration all parts
Tasks Distribution
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Gantt Chart
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Actual schedule
Proposed schedule
Minimum activities beingdone due to team members
practical training
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Practical training
Technical problems:
o Learning the technology many unexpected thingshappened
o accelerometer burn
o ATMEGA8 (C) easily burn migrate toATTINY2313
o LM298 motor driver burn develop own high currentmotor driver (60Amp)
o Unreliable RF module migrate to Zigbee module
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Causes of Delay
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microcontroller
EmergencyStopButton
Bumper
microcontroller
accelerometer
ZigBee Module ZigBee Module
Motor
InfraredSensor
HMsituated on users head Base Controlleron the wheelchair
Wireless comm
HM
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Main Sub Systems In
HM Wheelchair
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TechnologiesInvolve
BaseController
Software
MotorizeWheelchair to
prove theconcept
HMController
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Technical Aspect of HM
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ADXL202:LowCost 2g Dual AxisAccelerometerswith used for
detection of HM
IP-Link1270:
2.4GHz zigbeewireless module forcomm between HMcontroller and basecontroller.
ATTINY2313:High-performanceand Low-powersmall size Cused to decode HMand send to basecontroller
Rechargeable battery9V 150mAh
Average currentconsumption ofHM= x mA
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HM Controller
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BASE CONTROLLERmainprocessing unit for intelligence wheelchair motion control
based on received data from HMC & other sensors
Motor driver circuit:provide high current
driver for 2 DC motors
IR sensor & interfacecircuit: For obstacle
avoidance capability
Zigbee WirelessModule: For Commbetween HM & basedcontroller
Ccircuit: mainprocessing unit forintelligencewheelchair motioncontrol
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MOTORIZE WHEELCHAIRAs a platform for evaluating HM
2 DC motors: 24volt,2Amp
Joystick holder:
hold joystick if notbeing use
Safety starter: HMC
will only functioningwhen there is a personon it.
Foot pad: Forcomfortable restingfor userStainless steel:
used to construct
the HM base.
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BASCOM
BASIC language compiler forsoftware development for ATMEL
microcontroller (Attiny2313).Demo (Free) version from MCS
Electronics
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Software
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Results
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Help Quadriplegia & Paraplegia to bemobile with the used of HM wheelchair.
Testing results show that this system can be
used with little training (~5min).
The system had been design with safetyconsideration so that it will make the user
feel confident to used it.
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Conclusions
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References
Agilent Malaysia Innovator Award 2007
Performance of a Head movement Interface for Wheelchair Control,P.B Taylor, H T Nguyen. Faculty of Engineering, Universityof Technology, Sydney, NSW, Australia.
http://www.electropedicbeds.com/Used-Electric-Wheelchairs.html
http://www.adremo.nl/index.phpwww.microchip.com
http://en.wikipedia.org/wiki/Wheelchair
http://www.ti.com/
http://www.sunx-ramco.com/
http://www.analog.com/en/ http://www.atmel.com/
http://www.mcselec.com/
http://www.electropedicbeds.com/Used-Electric-Wheelchairs.htmlhttp://www.electropedicbeds.com/Used-Electric-Wheelchairs.htmlhttp://www.adremo.nl/index.phphttp://www.microchip.com/http://en.wikipedia.org/wiki/Wheelchairhttp://www.ti.com/http://www.sunx-ramco.com/http://www.analog.com/en/http://www.atmel.com/http://www.mcselec.com/http://www.mcselec.com/http://www.atmel.com/http://www.analog.com/en/http://www.sunx-ramco.com/http://www.sunx-ramco.com/http://www.sunx-ramco.com/http://www.ti.com/http://en.wikipedia.org/wiki/Wheelchairhttp://www.microchip.com/http://www.adremo.nl/index.phphttp://www.electropedicbeds.com/Used-Electric-Wheelchairs.htmlhttp://www.electropedicbeds.com/Used-Electric-Wheelchairs.htmlhttp://www.electropedicbeds.com/Used-Electric-Wheelchairs.htmlhttp://www.electropedicbeds.com/Used-Electric-Wheelchairs.htmlhttp://www.electropedicbeds.com/Used-Electric-Wheelchairs.html -
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Thank You
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Q & A Session
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Two mode of operation
Head Movement control: wheelchair
can be controlled by HMJoystick Control: wheelchair can be
controlled by joystick.
Agilent Malaysia Innovator Award 2007
Universiti Teknologi Malaysia
Operational
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The Adremo wheelchair (Holland) is anelectric wheelchair fitted with speciallycombined head
And foot controls.
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Adremo Wheelchair
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A specially constructed adjustablehead support enables steering by wayof a slight head movement.
Currently, Adremo wheelchair is notavailable in Malaysian market so thereare no price could be quoted andMaybe it is very expensive to own.
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Adremo Wheelchair cont
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Spastic School Visit JB
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