2Morrow Design GroupiMind Helmet

Presented by: Gil OrcillaEunice KimaniOmer Saeed

Presented to:Dr. Kathy KasleyEE660 – Fall 2013

Introduction iMind Helmet Potential Customers iMind Helmet Operation Requirements Future Possibilities Conclusion

iMind Helmet Design Requirements

Brain Reading Robot Remote◦ A helmet that reads brain activities and then

translates it into a command for a Robot. Purpose

◦ To help the immobile humans, to make them independent

What’s new?◦ Not just about moving hands but about complete

tasks

iMind Design Requirements

◦ To help the immobile humans, to make them independent Military who wound up disable after war Civilians after an accident who end-up in wheel chair Paralyzed and old population

iMind Helmet Potential Customers

What Does iMind Helmet Do◦ Recognizes thoughts and translates them into

“Hand Gestures” that robot will utilize to execute user’s wants

“Cognitive Mode” process thoughts and commands

iMind Design Requirements

Super Fast◦ A brain is capable of almost 1 million MIPS

instructions per second◦ Should be able to read those signals and then

translate Power Efficient

◦ To be worn by a human being◦ Size directly corresponds to power efficiency

Good Heat Dissipater Lightweight

iMind Design Essential Requirements

Input◦ Brain activity picked up by the helmet is sent to a

computer A software is used to work out which

movement the person is thinking about.

Output◦ Sends a signal to the robot commanding it to

perform the task

iMind Helmet Operation

General design requirements:a. Wireless range 100 feet with optional

and encryptedb. Sampling rate: 512/secondc. Electrically similar to GFCI, to prevent

feedback/power spikes.

iMind Design Requirements

General design requirements:◦ Bandwidth: 240 Hz◦ Dynamic Range: 500uv◦ Power Source & duration: Lithium-ion battery,

minimum of 24 hour duration with 3.3V◦ Sleeping mode disabled◦ Operates during medical emergencies and

impairment

iMind Design Requirements

Under What Limitations◦ E-wreath, it will fit/snug to anyone’s head with

comb like wires It has multiple wires to allow electromagnetic

induction to detect brain signals. It can withstand 0-150% relative humidity, without

submersion to water It will operate bet -40 Deg F to 180 Deg F

iMind Design Requirements

Unit Testing ◦ Test Individual units and components at the

design level. The environment will also be digitally modeled to represent the physical design of the helmet

Integration tests◦ Tests the interactions between the main parts our

design Helmet, Robot and Software Acceptance testing

◦ The overall functionality of the system will be tested as per the requirement specifications.

iMind Testing Approach

Reg # Functional Requirement Description Testing Requirement

Speed 1a. The system shall read brain

signals 1 million MIPS instructions per second Pass/Fail

1b. The system shall and translate the signals

A Software will be used to work out which movement the person is thinking about.

Pass/Fail

Power2a. The system shall be power

efficientLithium-ion battery will be used to operate it Pass/Fail

2b. The system shall operate 24hrs The system will be tested to operate under 24 hrs, 7 days a week

Pass/Fail

Weight3a. The system shall be lightweight The helmet will be  3.95 ounces (112 grams) Pass/Fail

Communication 4a. The system shall provide wireless

transmissionWireless range 150 feet with optional and encrypted Pass/Fail

Environmental Conditions5a. The system shall maintain normal

operation at a range of temperature

It will operate bet -40 Deg F to 180 Deg F Pass/Fail

5b. The system shall withstand relative humidity, without submersion to water

It can withstand 0-150% Humidity Pass/Fail

Acceptance Testing

Short Channel Effect ◦ there is a limit to which we can reduce the size of

the transistors without getting negative effects on the performance of the transistors such as power consumption and threshold voltage

Body Effect◦ the body effect basically raises the threshold voltage

VT of the transistors from the zero body-source voltage threshold or VT0, changing the behavior of the device

◦ This is especially important in cascaded systems where this output, Vout, must trigger subsequent devices

Second Order Effects

BICMOS Circuit Comparison

BiCMOS Speed Comparisons

Bicmos Power Comparison

Speed◦ Emitter follower provided the best in speed◦ CMOS followed closely

Power◦ CMOS used the least power ◦ Emitter follower values were reasonable

IC Choices

Battery Choice - I

Best choice is Lithium Ion Battery Used in Most Cell Phones these days Rechargeable Good for a day operations

Battery Choice - II

Decision…Common Emitter and CMOS

0

0

0

0

M 3

M b re a k N

M 4

M b re a k PC L o a d 14 0 n

V D D 15 V d c

Q 5

Q 2 N 3 9 0 4

Q 6

Q 2 N 3 9 0 6

V in 1

TD =

TF =P W =P E R =

V 1 =

TR =

V 2 =

V D D

V D D0

CMOS

Reason for Choice:

And the Winner is…

A new era of communication Could be used to run errands Military can leverage on this technology, through

land, sea, and air both offensive and defensive

Future Possibilities

A big breakthrough Would change lives of immobile patients Would save the lives of Victims in a disaster CMOS is the best choice circuit for our device Choice based on the results from Lab#24 and our

speed and power requirements

Conclusion

Abbott, A. (2012).Mind-controlled robot arms show promise. Retrieved from http://www.nature.com/news/mind-controlled-robot-arms-show-promise-1.10652

The Guardian.(2012). Mind-reading program translates brain activity into words. Retrieved from http://www.theguardian.com/science/2012/jan/31/mind-reading-program-brain-words

Quick, D. (2010). Mind reading – scientists translate brain signals into words. Retrieved from http://www.gizmag.com/translating-brain-signals-into-words/16308/

University of Minnesota, (2013). Mind over mechanics. Retrieved from http://discover.umn.edu/news/science-technology/brain-computer-interface-allows-mind-control-robots

http://www.batteryspace.com/batteryknowledge.aspx

Refrences

Questions?