open telecom, inc. (freelz wheelchair controller) october, 2008 welcome!
TRANSCRIPT
Open Telecom, Inc.Open Telecom, Inc.
Open Telecom, Inc.
(Freelz Wheelchair Controller)
October, 2008
WELCOME!
Open Telecom, Inc.Open Telecom, Inc.
11
Teeth-clenching data acquisition system & power wheelchair control
Teeth-clenching data acquisition system & power wheelchair control
Original Technology developed by Korean instituteCommercializing & upgrade by Open TelecomMarketing by Open Telecom (www.open-telecom.com)
Original Technology developed by Korean instituteCommercializing & upgrade by Open TelecomMarketing by Open Telecom (www.open-telecom.com)
IT integrated power wheelchair
Open Telecom, Inc.Open Telecom, Inc.
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Contents----------------------------------------------
1. Technology overview
2. Comparison with the others
3. Technology
4. EMG-Power wheelchair
5. EMG-Tetris game
6. Market
Open Telecom, Inc.Open Telecom, Inc.
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1. Technology overview
○ Utilizing EMG signals from teeth-clenching, users are able
to operate computers, electronic devices and power
wheelchairs. (EMG:bioelectric signal generated by muscle
use)
○ Using this technology, commercial products can be
developed for the various applications.
○ Short-term Target products :
Wireless control power wheelchairs, PW control modules,
User training games
○ Long-term Target products :
Games, information input devices, computers
Open Telecom, Inc.Open Telecom, Inc.
442. Handicapped in the spinal cord
○ The spinal cord : Located in spine. Between the cervical vertebrae 1
and the lumbar 1, 2. Major data path between brain and body.
○ Heavily handicapped in spinal cord : The spinal cord in no.4 or no.5
of the cervical vertebrae is damaged, and can’t use both legs and
hands
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○ Very limited to do rehabilitation
○ Required to have indirect control of mobility aids or IT devices
Open Telecom, Inc.Open Telecom, Inc.
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3. Comparison with the others
Power wheelchair control using breath : Breath is not related
with power wheelchair directly. Taking long time to use it.
Our technology is using the movement of teeth and
chin(teeth-clenching), and it gives direct control to the
moving direction of power wheelchair. In addition,
supporter can control power wheelchair for the user within
some distance.
Open Telecom, Inc.Open Telecom, Inc.
3.1 Existing product
Input Devices
Who hasn't wished for more freedom? Our input
devices let you control your wheelchair just as
you like, making you independent and mobile
again.
Suck and blow controlThe wheelchair remains directly steerable; due to the continued mode, a signal is only required for a necessary change of direction.Chin controlThe complete chin control can be moved behind the seat by means of a swivel arm; swiveling, On/Off and MODE are activated by means of a separate multifunction switchFoot controlCan be used in 3-switch or 5-switch mode; the continued mode makes control of the wheelchair easier for the user; all functions can be activated.5-button keyboard controlLarge-surface touch sensors for MODE and driving direction as 5-switch mode.Buddy ButtonFreely positionable function/driving keys for entering driving signals and/or menu navigation.Calibratable mini joystickCalibration can be activated at any time by the user; self-control by means of force vectors and movement vectors display on the LCD.
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Open Telecom, Inc.Open Telecom, Inc.
3.2 Practice of suck & blow (Sip & puff)
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Open Telecom, Inc.Open Telecom, Inc.
3.3 Practice of chin control88
Open Telecom, Inc.Open Telecom, Inc.
3.4 Practice of Vision sensors & GPS
99
Open Telecom, Inc.Open Telecom, Inc.
3.5 Practice of EMG signals from teeth
1010
Open Telecom, Inc.Open Telecom, Inc.
3.6 Comparison(Breath and EMG-teeth)
○ Practice of heavily handicapped people in
spinal cord (no.4 or no.5 of the cervical
vertebrae is damaged, and can’t use both
legs and hands). 10 people in tests.
○ Speed of powerchair : 0.4m / sec
○ Test : Passing test path, and checking the
time and driving suite errors
If the user is out of the path more than 3
times, don’t count in test results(2 people)
1111
Open Telecom, Inc.Open Telecom, Inc.
3.7 Test resultsTeeth-clenching control way had
22% less driving time and 56%
less driving error out of path
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Open Telecom, Inc.Open Telecom, Inc.
13134. Technology, patents & copyrights
1) Sensor, data acquisition wireless devices and programs
Integrated in headset kit
2) Mouse & keyboard control program using teeth-
clenching Can be loaded to notebook or special
control panel module for power wheelchair
3) Interface system between control panel module and
joystick controller Supplied as system set which can
be installed
4) Embedded OS based data acquisition & power
wheelchair control system Supplied as special
control panel module based on specific joystick
controller
Open Telecom, Inc.Open Telecom, Inc.
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4.1 EMG : ElectroMyoGram)
EMG is bio-electric signal generated by using muscles
- Measured with various noise. Stable differential signal.
- Easy to acquire from skin.
- Signal processing is easier than
eyeball-movement or brain waves
Open Telecom, Inc.Open Telecom, Inc.
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4.2 EMG Data Acquisition
- Basic movement: Teeth-
clenching
- Easy-to-do
- Not easy to be exposed to
others
- Electrodes on temporalis
muscle
- Headband or cap types
design
Open Telecom, Inc.Open Telecom, Inc.
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4.3 EMG-Power Wheelchair
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4.4 Power Wheelchair Control- Basic movement : Left-teeth, right-teeth,
both-teeth
- Control when it is stopped
Left-teeth clenching : Left-turn slowly
Right-teeth clenching : Right-turn slowly
Both-teeth clenching twice : Switch from
forward
to backward, backward to
forward
Both-teeth clenching long(more than 2
seconds) :
Moving forward or backward
- Control when it is moving forward
Left-teeth clenching shortly : Left-turn
slowly
Right-teeth clenching shortly : Right-turn
slowly
Left-teeth clenching long(more than 2
seconds) :
Quick left-turn
Right-teeth clenching long(more than 2
seconds) :
Quick right-turn
Both-teeth clenching : Stop
Open Telecom, Inc.Open Telecom, Inc.
18185. EMG-Tetris game- practicing users
1) Wireless data transmission part
(Green LED)
2) EMG sensors (Left & right)
3) Ground part (Center)
4) EMG-Tetris program
5) Serial : Initiating the program
6) Load up : Test program selection
7) Start the program
1
2
5
6
7
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1) Left tooth clenching shortly : Move left
2) Right tooth clenching shortly : Move
right
3) Both teeth clenching shortly : Rotate
4) Both teeth clenching long(1 second) :
Drop
5) Left tooth clenching long(2 seconds) :
Restart
Open Telecom, Inc.Open Telecom, Inc.
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6. Market
Control device makers
Power wheelchair & joystick controller makers
Potentials-Heavily hands & legs handicapped people : 30,000 in Korea, about 3 million people worldwide
-Auxiliary potable input devices with portability : Meets the need in era of ubiquitous
-Games without hand operation of keyboard or mouse
Open Telecom, Inc.Open Telecom, Inc.
2020
Open Telecom, Inc.Open Telecom, Inc.
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Thank you !