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!