Couch Potato Exerciser Section 15, Team 1 Alex Hurd Alvin Kuo Eujin Lee Nathan Ritter Design Review 23 May 2008

Introduction Mission : Design a device inspired by a recumbent bicycle that requires exercise to power an electronic device. Client Users

Mission : Design a device inspired by a recumbent bicycle that requires exercise to power an electronic device.

Client

Users

Requirements Safety should be safe to sit on should have all the electronic wires and parts covered Comfort should be comfortable enough to sit and exercise while watching television for a long period of time should allow the user to do other activities while on the seat besides watching TV should be usable by people with different heights Convenience should be able to start pedaling right away whenever the user wishes to watch television should be able to power various electronic devices Ease of Operation should not require any special training to operate

Safety

should be safe to sit on

should have all the electronic wires and parts covered

Comfort

should be comfortable enough to sit and exercise while watching television for a long

period of time

should allow the user to do other activities while on the seat besides watching TV

should be usable by people with different heights

Convenience

should be able to start pedaling right away whenever the user wishes to watch television

should be able to power various electronic devices

Ease of Operation

should not require any special training to operate

Mechanical System

Electrical System - Specifications Input from 12V DC generator Ouptut to 120V DC appliance(s) Store enough energy to run a television for about 5 minutes

Input from 12V DC generator

Ouptut to 120V DC appliance(s)

Store enough energy to run a television for about 5 minutes

Electrical System - Direct DC energy stored in battery Converted to AC by inverter Used by device(s) plugged into power strip

DC energy stored in battery

Converted to AC by inverter

Used by device(s) plugged into power strip

Electrical System - Indirect DC Energy stored in capacitor DC Energy used to activate solenoid Solenoid activates switch, which closes the circuit between AC power source (wall) and the device.

DC Energy stored in capacitor

DC Energy used to activate solenoid

Solenoid activates switch, which closes

the circuit between AC power source

(wall) and the device.

Our Concerns Our Ideas Pedals sliding away from the user’s feet. Battery charge will last too long Create a hard connection between the seat and the pedals Put rubber pads on the bottom of the pipes to increase friction. Use capacitors

Pedals sliding away from the user’s feet.

Battery charge will last too long

Create a hard connection between the seat and the pedals

Put rubber pads on the bottom of the pipes to increase friction.

Use capacitors

Questions?