Niigata Institute of Technology, JAPAN

Development of Mouthpiece Type Remote Controller

for Disability Persons -- 3rd --for Disability Persons 3rd

Shojiro George TERASHIMA: Niigata Institute of Technology

T k KITAZAWATakuya KITAZAWA: Sabun Industry Co. Ltd.

Eiichi SATOH: Niigata Institute of Technology

Niigata Institute of Technology, JAPANBack Grounds

• Disability people use powered wheelchair

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• The person who can move upper limbTh t l h l h i b j ti kThey control wheelchair by joystick

• The person who can’t move even upper limblimb

They need to use another control system

Niigata Institute of Technology, JAPANBack Grounds g f gy

A variety of operation systems

Controller Problems

have been developed

Chin Controller Higher level injured person Can’t be appliedCan t be applied

Head Motion ↑ ↑ ↑

V i C l H d di i i hVoice Control Herd to distinguish “voice command” &

i i“conversation noise”

We focused on the tongue motion

Niigata Institute of Technology, JAPANBack Grounds

“Tongue Motion” has lots of merits

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Tongue Motion has lots of merits•can move fast

•move accurately

•connected to brain through cranial nerve

•avoid serious damage even in the case of cervical cord injurycervical cord injury

Mouth piece type remote controllerMouth piece type remote controller would be available!!

Niigata Institute of Technology, JAPANConcepts & Specification

Before development of

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Mouthpiece type remote controller 1) Controller with cable : insanitary (saliva)1) Controller with cable insanitary (saliva)

Need to be wireless

2-a) Wireless controller needs a battery!!2-b) Battery has strong toxicity2 b) Battery has strong toxicity

SolutionSolutionPassive RFID can work without battery!!

A t ill t b id h k d hiAntenna will set beside cheek or under chin

Niigata Institute of Technology, JAPANConcepts & Specification

RFIDg f gyp p

（Radio Frequency IDentification)•RFID transponder has a IC•IC has it’s own ID code dt

dΦε=IC has it s own ID code

•Electromagnetic inductiondt

through electric wave or electromagnetic wave Outside RFID or electromagnetic wave

it works without a battery!

Outside antenna Transponder

it works without a battery!

Niigata Institute of Technology, JAPANRemote Controller (2nd) g f gy( )

Schematic diagram IC (1 h)Schematic diagram

of remote controllerIC (1ch)

IC (2ch)

IC (3ch)

IC (4ch)S i h A

Switch

Switch Antenna

RFID IC

Inside View : without coverOver View : with cover

Niigata Institute of Technology, JAPANObject g f gyj

Investigate the characteristics of the remote controllerof the remote controller

Niigata Institute of Technology, JAPANExperiment (1) g f gyp ( )

In vitro test : M th M i C i ti R [ ]• Measure the Maximum Communication Range [mm]only while steady communicationMCR i th di t f b t• MCR is the distance of between

the remote controller and the antennaT k h i fl f ki d/ f• To know the influence of water, skin and/or fat

• Set 3 Conditions : Atmosphere, Water and Meat

ControllerMCR Controller

AntennaScale

Antenna

Niigata Institute of Technology, JAPANExperiment (2) g f gyp ( )

In vivo test :C t ll i t d i t ’ th• Controller was inserted into users’ mouth

• To investigate the characteristic and t k b t t itito know best antenna position

• MCR was measuredS 3 i i F l B id h k U d hi• Set 3 positions: Frontal antenna, Beside cheek, Under chin

• 10 subjects (10 times each)

MCR

Antenna

45 deg.

Niigata Institute of Technology, JAPANResults & Discussions g f gy

In vitro test ControllerMCR Controller

AntennaScale

Antenna

Condition MCR（mean ± S.D. [mm] ）At h 112 9 ±11 8Atmosphere 112.9 ±11.8

Water 129.7 ±18.9Meat 119.4 ±14.5

This result leads; • It would be able to workIt would be able to work

in the condition of humans’ mouth.

Niigata Institute of Technology, JAPANResults & Discussions

In vivo testMCR

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Antenna

45 deg.

Frontal Antenna Beside Cheek Under Chin

31 1±9 5 31 5±8 9 31 7±15 1MCR [mm] 31.1±9.5 31.5±8.9 31.7±15.1]mean±S.D.

This result leads; • The trial remote controller has enough• The trial remote controller has enough

performanceB id h k t ld b th b t iti• Beside cheek antenna would be the best position

Niigata Institute of Technology, JAPANTrial operation g f gyp

• To make sure the ability of this system• Tried to operate an electric powered wheelchair

on the market

Setup:Setup: • Powered wheelchair (Suzuki, MC-16)• RFID Identifier system

(Takaya, TR3-MD001E)• Controller

(National Instruments NI-9263 cRio-9014)(National Instruments, NI 9263, cRio 9014)

Niigata Institute of Technology, JAPANConclusions g f gy

1) We developed a new type of mouthpiece1) We developed a new type of mouthpiece remote controller with RFID.

2) Th t i l t t ll h gh2) The trial remote controller has enough performance.

3) Beside cheek antenna was the best position .4) We controlled an electric powered wheelchair ) p

on the market, by operating the tongue.5) It was suggested that this system can be5) It was suggested that this system can be

applied for disability people.

Niigata Institute of Technology, JAPANAcknowledgments

This study was supported by following projects.

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•The Ministry of Education, Culture, Sports, Science and Technology.

(2005~2008:18700480, 2009~2011:21500524)

•Japan Science and Technology Agency.(2006:05-021)

•Joint research funding of NIIT. (2006-02, 2008-01)

Thank you !有り難う！Vi l D k !Vielen Dank !Merci !Muchas gracias !Grazie !Grazie !谢谢 !고맙습니다 !Obrigado !Obrigado !Köszönet !