Wireless interface for the Project54 Device

Network

Devin MullenAdvisor: Professor Andrew Kun

Overview

Background Problem Definition Proposed Solution Design Objectives Implementation and Testing Budget Estimate Project Timeline

Background

Project54 Integrates police devices into one

interface1. In-cruiser computer2. Controller Area Network (CAN)3. Devices

Background

System Benefits Access to motor vehicle and license

records Individual device control Voice activated commands

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

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

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

Implementation and Testing

System Hardware Diagram

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

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

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

Budget Estimate

Project Timeline