🚗 Smart Parking DAQ System & IoT Control

Course: Instrumentation and Measurement
Institution: Amirkabir University of Technology (Tehran Polytechnic) — Department of Electrical Engineering

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👥 Project Team

Member Name	GitHub Profile
Mahbod BemaniCham	@Mahbodbe
Erfan Ashkesh	@THEEA8
Mani Mohammadi	@loManiol

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🌐 English Version

📌 Project Overview

The Smart Parking DAQ System is an end-to-end IoT and Instrumentation solution engineered for automated multi-story parking structures. It seamlessly integrates multi-sensor physical data acquisition (RFID, Ultrasonic, Hall Effect, Temperature/Humidity, IR Break-beam), continuous-time closed-loop barrier gate control via a PID-tuned servo motor, automated two-factor vehicle authentication (ANPR + RFID), and real-time telemetry streaming over a central Python web dashboard and a Telegram notification bot.

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🚀 Key Features

• Two-Factor Vehicle Authentication: High-security dual-layer verification combining an RC522 13.56MHz RFID card UID check with an ANPR Camera system (license plate validation & vehicle color matching).
• Automated Nearest-Slot Allocation: Real-time database query executing an optimized algorithm to prioritize the closest vacant parking slot sorted dynamically by floor level:

$$\text{Target Slot} = \arg\min_{{\text{floor, slot}}} { \text{floor} \mid \text{Occupied} = 0 }$$

• Multi-Layer Hardware Redundancy:
  • Dual Occupancy Sensing: Cross-verification via HC-SR04 Ultrasonic Distance Sensors and A3144 Hall Effect Sensors.
  • Dual Power Supply: Seamless hardware switchover between the main AC Grid and an Online UPS Battery backup.
  • Dual Data Persistence: Centralized SQLite/PostgreSQL cloud sync backed up by local ESP32 EEPROM/SD Card buffering to prevent data loss during network outages.
• Closed-Loop Servo Gate Control: Precise PID-driven barrier arm positioning ($%OS < 5%$, $T_s < 0.32\text{s}$) paired with an active anti-pinch IR break-beam threshold safety trigger.
• Interactive Web GUI & Telemetry Dashboard: Live KPI tracking cards, a 60-slot visual grid layout, real-time Chart.js environmental telemetry updates, and live access logging.
• Proteus Hardware Co-Simulation: Full-scale structural hardware simulation inside Proteus interconnected with the physical ESP32 MCU via a COMPIM virtual serial bridge.

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📊 Web Dashboard & System Results

Real-Time KPIs, Occupancy Map & Environmental Telemetry	Live Vehicle Access Logs & Slot Grid
Live counters (Inside, Vacant, Entry, Exit), 60-Slot Occupancy Grid (Green=Vacant, Red=Occupied), and Real-Time Temp/Humidity Charts.	Real-time access log table featuring Timestamp, UID, License Plate, Action Badge (Entry/Exit), and Allocated Slot ID.

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⚠️ ESP32 Firmware Setup & Configuration

[!CRITICAL] Wi-Fi & Server Credentials Configuration
Before flashing the microcontroller firmware located inside the arduinocode/ or rc522sevorgbwifi/ directories, you MUST update your local network configurations and Central Python Server IP address inside the primary source code file (.ino / .cpp):

// Replace these placeholders with your actual network parameters:
const char* ssid      = "YOUR_WIFI_SSID";
const char* password  = "YOUR_WIFI_PASSWORD";
const char* serverUrl = "http://YOUR_SERVER_IP:8000/api/gate/";

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📂 Repository Structure

smart-parking/
├── arduinocode/          # ESP32 Main Firmware (Sensors, Servo, LCD, Wi-Fi Drivers)
├── rc522sevorgbwifi/     # Isolated Hardware Test Modules (RFID & RGB LED)
├── proteus-simulation/   # Proteus Hardware Co-Simulation Schematic Files (.pdsprj)
└── report/               # Technical Engineering Documentation & Assets
    ├── dashboard-kpi-occupancy-telemetry.jpg
    ├── dashboard-live-access-logs.jpg
    ├── instr-parking-final-report.pdf    # Full Comprehensive Technical Report (Persian)
    └── instr-parking-final-report-en.pdf # Full Comprehensive Technical Report (English)

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📖 Engineering Documentation

For detailed mathematical modeling, PID loop transfer functions, signal conditioning circuit schematics (including 10kΩ pull-up calculations), and system security topologies, please consult the complete PDF reports located inside the report/ directory.