P11207 – MID-RANGE WIRELESS

MODULERyan Toukatly – Electrical Engineer

Trey Minarcin – Electrical Engineer

Erwan Suteau – Electrical Engineer

Pete Franz – Electrical Engineer

Sponsor : Harris Corporation

Project Description Design a mid-range RF module that will serve as

the communication link between a base station and a land vehicle for automated control

The module is part of the Wireless Open-Source/Open-Architecture Command and Control System (WOCCS)

Module is to be used to educate incoming FYE students – controlling wireless vehicles

Module will be incorporated into future senior design projects

Customer Needs

Importance: 9=High, 3 = Moderate, 1= Low

Specifications

Importance: 9=High, 3 = Moderate, 1= Low

System Architecture

Selected Concept

From multiple concepts, the following were selectedTransmission Type – External RF AntennaUser Data Protocol – USBRF Protocol – SimpliciTIVisual Feedback – Status LEDsMicrocontroller/Transceiver – CC1111

System on Chip

Final Product

SMA Connector

Programming Connector

Grounding Clip

915MHz Antenna

CC1111 System on Chip

External Status LEDs

USB Connector

Power Connector

Internal Status LEDs

Power Switch

Project Status

Design meets all customer needs Design passed all engineering

specifications Project is under budget Software implementation could be

optimized for data rate performance

Testing Results

Fields in green are the values achieved on final prototype

Importance: 9=High, 3 = Moderate, 1= Low

Major Issues Hardware

Board thickness and housing thickness did not match – housing rails were widened

Implemented incorrect external crystal pin layout – needed to be rotated 90°

SoftwareData write speed from PC to the module is

limited

Evaluation Project has been successful in designing and

producing a small-scale wireless system The modules can be used in future projects

PortableMedium-range communication link Easy to interface Adaptable to many diverse remote applications.

Future WorkData can be sent too quickly to the module over USB -

currently resolved by rate-limiting the software that communicates with the module

A more elegant software solution could be developed on the microcontroller in the future

Questions?

Thank You!