Power Available vs. Required for Standalone Low Cost Flight Display - PowerPoint PPT Presentation

Power Available vs. Required for Standalone Low Cost Flight Display System

Who are We? EE Team #192 ME Team #34 Gao Cai Justin Dubrosky Dylan Hammerman Brandon Naples Andrew Radlbeck Faculty Advisor : Chengyu Cao Shu Wan Faculty Advisor: Helena Silva Sikorsky Liaison Paul Inguanti

Introduction Design a stand alone unit to determine the ceiling IGE at specific weights for low cost helicopters. Requirements: ● Continuous atmospheric pressure and air temperature measurements ● Altitude calculation ● Ceiling IGE ● Indicator: LED and LCD ● Accurate and repeatable function ● Low cost and lightweight ● Portable (self-powered)

Helicopter Pictures Schweizer S-300C

Design: Old Prototype I 2 C ● Data Logging Unit SPI ● Records altitude/temperature data onto an SD card Elevator Altitude ● Data easily graphable in Excel ● This graph represents the ≈ 18m altitude of the back ITEB elevator shaft from “C” to “4”

Design: Old Concept GPIO I 2 C SPI

Design: Final I 2 C SPI GPIO SPI

Code Snippets ● Main control unit code

Code Snippets ● Sensor control unit

Schematics

Schematics (cont)

Schematics (cont) TI PCA9544

Schematics (cont)

Design: Mechanical Specs ● 6061 Aluminum ○ light and low cost [A] ● Dimensions ○ 6” diameter & 2.5” height Construction A. Top Plate: Cut-outs for the pressure sensors B. Center: To create enclosure for all [B] electrical components C. Base Plate: Board is mounted here [C]

Simulations: Mechanical

Results

Results

Results

Results

The Future ● Interfacing -- Control & Sensor ● Velocity Testing ● Altitude testing ○ Low - offset calculation ○ High - final test

Schedule Begin Winter Finish Winter Presentation 2 Order Parts Assemble Code for Winter Break Testing 1/21 Testing 1/25 12/3 12/4 SAM D20 12/5 12/15-1/21 Design Begin Spring Finish Spring Report and Poster Project Complete Modification Spring Break Testing 02/14 Testing 03/28 04/01 05/02 02/01 03/16 - 22 *Not to Scale

Budget ● Sikorsky → $4,000 budget ● Prototyping cost breakdown: - Adapter Board $5 - Battery $24 - Breadboard/wires $20 - Charger $8 - Development/Debugger board $30 - Enclosure $90 - Keypad $4 - LCD $25 - Multiplexer Free - Sensors $90 - SD Card $13 Total: $309

Cost per Unit - Enclosure $90 - Four Sensors $60 - LCD $25 - Two batteries $24 - Microprocessors $20 - Charger $8 - Keypad $4 - Multiplexer $1 - Wires $1 Total: $233

Questions?