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Telematics: Interactive Display Using
Wireless Communication
Jimmy Su
Team Whitney
April 29, 2002
Wireless Communication System
• Allows communication between Whitney and
separate vehicles/computers
• Processes the data using Visual Basic programming
• Displays the data through a Graphical User
Interface
E
Wireless Communication System
Two RF Transceivers that transmits and receives
wireless RS232C Data
Process: One Transceiver accepts RS232c data
and converts the data to Radio Frequency. The
other Transceiver receives the RF data and
converts it back to RS232c
Wireless Transceiver: Specifications
OTEK TR200 Series Transceivers
• 100/300 feet range
• 916.5 MHZ Operating Frequency
• Transmission Rate of 19,200 BPS
Wireless Transceiver: Circuit Diagram
Wireless Communication: Protocol
Sender’s Protocol
• Proprietary software made by OTEK, manual
input that runs on DOS
Receiver’s Protocol
• Program developed in C that parses control and
input data, reads and writes to the serial port
Interactive Display: Visual Dashboard
Purpose: To display real-time information from
Whitney to a computer on a separate vehicle
Visual Dashboard: State Algorithm
Start
Load
Form
Process
Data
User presses GO
Get
Input
End of
End
Input
Telematics: Summary
• Wireless Communication proved to be successful,
however the proprietary software became a
limitation
• Visual Dashboard Interface can display the
information from Whitney, what is the next step?
• Automotive Telematics has become the new
trend in traveling: enabling safety, security,
entertainment, and navigation