Silver Snake Speaker System Team Silver SnakesJeff Kelly, Matt Ingel, Ian PicarielloNovember 22, 2011

Capstone ProposalDon Clark16.399

Client Background

Capstone ProposalDon Clark16.399

Client’s name: Ken (Pooch)Age: Late 20’sAttends the Bridgewell day

program in Medford, Massachusetts

He has spastic cerebral palsy (Hypertonia) and is non-verbal

Needs a communication system he can use in his bed or wheelchair

Objectives

Capstone ProposalDon Clark16.399

To create a speaker system for patients with CP

To give the user a means of communication

To give the user the ability to customize their product

Easy to operate for any userPortable and durable for use in

any configuration (wheelchair, bed, etc)

Functional Diagram

Capstone ProposalDon Clark16.399

Block Diagram

Capstone ProposalDon Clark16.399

Specifications

Capstone ProposalDon Clark16.399

Switch Panel (12”x8”x2”)◦ PIC (4.5-5.5V 220µA 1.1mW @ 5V)◦ LCD Display (4.5”x3” 5V 2.5mA 12.5mW @ 5V)◦ Total power consumed 13.6mW (only includes PIC and display)◦ Rechargeable Battery Pack (6V 1600mAh = 9.6Wh)◦ Panel can run for 705.88 hours (based on 9.6Wh and 13.6mW

consumed) Main Unit (12”x10”x8”)

◦ ISD (4.5-5.5V 25mA 125mW @ 5V)◦ PIC (4.5-5.5V 220µA 1.1mW @ 5V)◦ Amplifier (4-18V 4mA 20mW @ 5V)◦ Total power consumed 271.1mW (only includes 2 ISDs, PIC,

and amplifier)◦ 120VAC-5VDC adaptor (plugged into wall)

Speaker (3.6” diameter 1.1” thickness)◦ 93 decibel output

Specifications

Capstone ProposalDon Clark16.399

Chair Unit (12”x8”x8” 45 tilt)◦ ISD (4.5-5.5V 25mA 125mW @ 5V)◦ PIC (4.5-5.5V 220µA 1.1mW @ 5V)◦ Amplifier (4-18V 4mA 20mW @ 5V)◦ LCD Display (4.5”x3” 5V 2.5mA 12.5mW @

5V)◦ Total power consumed 284.7mW (only

includes 2 ISDs, 2 PICs, amplifier, and display)◦ Rechargeable Battery Pack (6V 1600mAh =

9.6Wh)◦ Unit can run for 33.72 hours (based on 9.6Wh

and 284.7mW consumed)

Gantt Chart

Capstone ProposalDon Clark16.399

Gantt Chart

Capstone ProposalDon Clark16.399

Cost Analysis

Capstone ProposalDon Clark16.399

Cost Analysis

Capstone ProposalDon Clark16.399