EDC SECTION 15, TEAM 1 ALEX HURD, ALVIN KUO, EUJIN LEE, NATHAN RITTER CLIENT: MR. STEVE JACOBSON 9 JUNE 2008 Couch Potato Exerciser

Why design this device? How did we design this device? Concept Definition Requirements What is the device? Mechanical System Electrical System Summary What’s Next? In Conclusion Agenda

Why design this device?

How did we design this device?

Concept

Definition

Requirements

What is the device?

Mechanical System

Electrical System

Summary

What’s Next?

In Conclusion

About 119 million, or 64.5%, of American adults are either overweight or obese. Obesity may come from a habit of sitting on the couch eating junk food. Many people want to exercise, but find it difficult to motivate themselves. Why design this device?

About 119 million, or 64.5%, of American adults are either overweight or obese.

Obesity may come from a habit of sitting on the couch eating junk food.

Many people want to exercise, but find it difficult to motivate themselves.

Concept Integrate the system with comfortable seating in front of the user’s TV in order to encourage exercise Create incentive to continue exercising by regulating power to the TV How did we design this device?

Concept

Integrate the system with comfortable seating in front of the user’s TV in order to encourage exercise

Create incentive to continue exercising by regulating power to the TV

Definition Design a device that: is inspired by a recumbent bicycle requires exercise to power an electronic device How did we design this device?

Definition

Design a device that:

is inspired by a recumbent bicycle

requires exercise to power an electronic device

Requirements Safe Comfortable Convenient Easy to Operate How did we design this device?

Requirements

Safe

Comfortable

Convenient

Easy to Operate

Bicycle pedals connect to gear system Generator converts mechanical to electrical energy Electrical energy activates device What is our device?

Bicycle pedals connect to gear system

Generator converts mechanical to electrical energy

Electrical energy activates device

Series of bicycle gears with pedals Aluminum frame Final connection to generator shaft What is our device? – Mechanical

Series of bicycle gears with pedals

Aluminum frame

Final connection to generator shaft

12V DC Generator Capacitors Relay What is our device? – Electrical

12V DC Generator

Capacitors

Relay

What is a relay? 12V DC Input Electromagnet Switch 120V AC pass-through

12V DC Input

Electromagnet

Switch

120V AC pass-through

12V DC Generator Capacitors Relay Power strip What is our device? – Electrical

12V DC Generator

Capacitors

Relay

Power strip

Indirect Capacitors take only a few minutes to charge completely. Capacitors last about 5 minutes. User must generate power for relay. Power from wall is almost certainly safe and consistent. Direct Battery takes about 2.5 hours to charge completely. Battery lasts about 6 hours. User must generate power for television. Power from the generator may be inconsistent and cause problems with the device. Why design an indirect system?

Indirect

Capacitors take only a few minutes to charge completely.

Capacitors last about 5 minutes.

User must generate power for relay.

Power from wall is almost certainly safe and consistent.

Direct

Battery takes about 2.5 hours to charge completely.

Battery lasts about 6 hours.

User must generate power for television.

Power from the generator may be inconsistent and cause problems with the device.

Safety The wide base of the frame ensures stability. All electrical connections are isolated and insulated to guarantee that no short circuits will occur. The use of an enclosed relay aids electronic isolation.

The wide base of the frame ensures stability.

All electrical connections are isolated and insulated to guarantee that no short circuits will occur.

The use of an enclosed relay aids electronic isolation.

Users sit in their seat of choice for and Power generated by pedaling activates the relay, closing a circuit to the TV. Power is stored in the capacitors to allow for time to get a drink or go to the bathroom for Summary simply convenience. comfort safety.

Users sit in their seat of choice for and

Power generated by pedaling activates the relay, closing a circuit to the TV.

Power is stored in the capacitors to allow for time to get a drink or go to the bathroom for

Condense gear system Explore direct alternative Streamline electrical system Add a derailleur What’s Next?

Condense gear system

Explore direct alternative

Streamline electrical system

Add a derailleur

The Couch Potato Exerciser Provides a safe, convenient method of exercise through a recumbent bicycle design Provides an incentive for exercise through use of a television Provides a comfortable, adaptable, in-home experience In Conclusion…

The Couch Potato Exerciser

Provides a safe, convenient method of exercise through a recumbent bicycle design

Provides an incentive for exercise through use of a television

Provides a comfortable, adaptable, in-home experience

Our client, Steve Jacobson Our EDC Professors, Tom Rochow and Charles Yarnoff Our experts, Tom Cohlmia, Art Schmidt, and Steve Jacobson Our advisers in the shop, Steve Jacobson, Scott Simpson, and Bob Taglia (especially Scott for the food) Kristen Cox for use of her multigear. Thanks to:

Our client, Steve Jacobson

Our EDC Professors, Tom Rochow and Charles Yarnoff

Our experts, Tom Cohlmia, Art Schmidt, and Steve Jacobson

Our advisers in the shop, Steve Jacobson, Scott Simpson, and Bob Taglia (especially Scott for the food)

Kristen Cox for use of her multigear.

Questions

BBC News: US slowly wakes up to obesity crisis. http://news.bbc.co.uk/2/hi/americas/4501646.stm Pedal Powered Generator http://www.los-gatos.ca.us/davidbu/pedgen.html#Movies Television Power Consumption http://reviews.cnet.com/4520-6475_7-6400401-2.html?tag=nav References

BBC News: US slowly wakes up to obesity crisis. http://news.bbc.co.uk/2/hi/americas/4501646.stm

Pedal Powered Generator

http://www.los-gatos.ca.us/davidbu/pedgen.html#Movies

Television Power Consumption http://reviews.cnet.com/4520-6475_7-6400401-2.html?tag=nav

Testing Results

Video Demonstration