devin mullen advisor: professor andrew kun. background problem definition proposed solution ...
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Wireless interface for the Project54 Device
Network
Devin MullenAdvisor: Professor Andrew Kun
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Overview
Background Problem Definition Proposed Solution Design Objectives Implementation and Testing Budget Estimate Project Timeline
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Background
Project54 Integrates police devices into one
interface1. In-cruiser computer2. Controller Area Network (CAN)3. Devices
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Background
System Benefits Access to motor vehicle and license
records Individual device control Voice activated commands
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Problem Definition
System operation is in-car only
Need for out-of-car operation Photos License scanning and records Device Operation
Out-of-car operation requires wireless connectivity
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Proposed Solution
Microcontroller-based interface Receives wireless data from Personal
Digital Assistant (PDA) Transfers wireless data to Project54
Device Network Wireless communication between
PDA and Project54 device network
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Design Objectives
Design two interfaces Wireless▪ Two connections to receive wireless data▪ Wi-Fi
1. Long range wireless connections
▪ Bluetooth1. Short range wireless connections
Wired▪ RS232 Serial
1. Transmit data from MCU to Project54 device network
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Implementation and Testing
System Hardware Diagram
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Implementation and Testing
Construction Wi-Fi and Bluetooth shields▪ Buy pre-assembled versions
1. Hardware too difficult to fabricate by hand
RS232 shield▪ Hand Fabrication
1. Few components2. Simple Circuitry
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Implementation and Testing
Software Wireless connection▪ Code to receive and store Wi-Fi data▪ Code to receive and store Bluetooth data
Wired serial connection▪ Code to interpret received data, send
commands Software must be fast, accurate
Minimize data delay Correct data transmission and reception
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Implementation and Testing
Testing of individual connections Wi-Fi hardware and software Bluetooth hardware and software RS-232 hardware and software
Bluetooth Connection
Wi-Fi Connection
RS232 Connection
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Budget Estimate
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Project Timeline