Automatic Obstacle Detection System project

Ultrasonic Object Detection and Alert SystemIntegrated Real World Projects Module

This project was developed as part of my Integrated Real World Projects module and focused on creating an automated object detection and alert system using an ultrasonic sensor and multiple output components.

Key Features and Functionality:

• The ultrasonic sensor continuously measures the distance of objects near the circuit.

• If an object is detected within 5 cm for more than 5 seconds, the buzzer sounds Alert Tone 1 (500 Hz).

• If the object is within 2 cm for more than 5 seconds, the system escalates the alert by:

  • Emitting Alert Tone 2 (1 kHz)

  • Flashing the LED at 3 Hz

• If the object remains within 2 cm after another 5 seconds:

  • A "Object Detected" banner rotates 360° using a servo motor

  • A relay module is triggered to activate a floodlight

Real-Time Feedback:

• During detection, the OLED display shows:

  • The live distance measurement (in cm)

  • A flashing "Object Detected" warning

Manual Override:

• Pressing the push button temporarily halts the alerts:

  • The buzzer and LED are turned off while the button is pressed

  • Releasing the button resumes the system's previous activity

Sustainability and Field Testing:

To assess real-world feasibility, we connected the system to a 12V solar panel, using a step-down converter to supply the appropriate voltage. We deployed the setup outdoors for one week to test:

• Continuous solar-powered operation

• Weather resistance (rainproofing and heat tolerance)

Our group ensured proper waterproofing and thermal protection. As a result, the system operated flawlessly for a full week, even under direct sunlight and rainy conditions.

Video of how it works: https://drive.google.com/file/d/1JQfKFsnEt162iiHojOazJwQAQCud0vWW/view?usp=sharing