FPGA-Based-Smart-Car-Security-System

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Introduction

A concealed and reprogrammable smart anti-theft system designed using Verilog HDL and system verilog for high-end vehicles such as Porsche. This project enhances security by detecting unauthorized access, activating an audible alarm, and securely disabling the fuel pump unless the correct hidden owner-authenticated sequence is performed.

Overview

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How the System Works

Think of the system like a guard dog that: o Sleeps quietly until you leave the house. o Starts watching when the house is empty. o If someone opens the door, it gives them a few seconds — if they don’t prove they belong, it starts barking (alarm). o And secretly, it locks the fuel line so even if the thief stops the barking, the car won’t move.

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Major Features

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System Diagram

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Block Diagram

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FSM Diagram

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Timing Parameters

These values are stored in memory and can be reprogrammed at runtime.

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Tools and Technologies

• HDL: Verilog / SystemVerilog
• Simulation Tool: ModelSim-Altera Edition
• Synthesis Tool: Quartus / Vivado
• Waveform Viewer: GTKWave
• Editor: Visual Studio Code (VS Code)
• Version Control: Git
• Target FPGA Board: DE1-SoC (Intel/Altera)

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Modules Hierarchy

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RTL Design and Simulation of Testbenches

Car Anti Theft Alarm System (Top module)

Anti-Theft FSM

Fuel Pump Logic

Siren Generator

Time Parameters

Timer 1Hz

Time Parameters With Reprogrammability

Debouncer

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Implementation

Simulation Checklist

• FSM Behavior: Verified transitions between all states (Armed, Triggered, Alarm, Disarmed)
• Timer Accuracy: All time intervals matched expected durations
• Siren Modulation: Alternating 440Hz and 880Hz tones confirmed
• Fuel Pump Lock: Disarm sequence required to restore pump power
• LED Indicator: Correct status signal behavior (blinking, solid, off)
• Debouncer: Inputs free from glitches or spurious toggles
• Time Reprogrammability: Parameters updated and reflected immediately
• Testbenches: Each module tested independently in ModelSim Altera

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Results

Below are key results verified from simulations and waveform analyses:

• Auto-Arming Delay: System enters Armed state exactly 6 seconds after ignition off and all doors closed.
• Driver Door Trigger: Countdown of 8 seconds starts upon driver door open. LED solid during countdown.
• Siren Behavior: Siren asserts if countdown expires, alternating tones confirmed via waveform.
• Fuel Pump Safety: Fuel pump remains OFF until brake + hidden switch are pressed under ignition.
• Parameter Update: New values loaded during reprogramming reflected instantly in next FSM cycle.
• No Metastability: Debouncer module ensures all transitions are clean and glitch-free.
• FSM Coverage: All FSM transitions including resets, armed/triggered/alarm/disarm verified.

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Real-Life Scenarios

Future Work

License

This project is licensed under the MIT License.

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Regards