iN-Car Drowsiness Detection and Alert System with CAN Bus Integration

Drowsiness Detection : The primary goal is to monitor the driver’s eye status to detect drowsiness or inattention, which can then trigger alerts or vehicle control actions.

Camera Module Part Number: Logitech C270 or similar

Microcontroller / Processor Part Number: ESP32-WROOM-32 and Sipeed Maixduino Dev. Kit

CAN Bus Module (Optional for Vehicle Integration) Part Number: MCP2515

Alert Mechanism - Buzzer

Alert Mechanism - LED Indicators Part Number: 5mm LED

Component Selection Rationale:

Camera Module: Provides the video feed for eye detection.

ESP32: Serves as the processing unit for running the detection algorithm and handling communication tasks.

Voltage Regulator & Power Module: Ensures stable power supply, critical for consistent operation.

CAN Bus Module: Facilitates vehicle integration, allowing data sharing with other automotive systems.

Alert Mechanisms: Buzzer, LEDs, and speakers provide real-time feedback based on the eye status.

Passive Components: Resistors, capacitors, and diodes ensure proper circuit functionality, filtering, and protection.

The camera captures the driver’s eye movements in real-time.

The onboard computer processes the video feed using the provided eye detection algorithm to determine the eye aspect ratio (EAR).

If the EAR falls below the threshold, indicating closed or nearly closed eyes, the system identifies potential drowsiness.

Upon detecting drowsiness, the system sends a signal to the alert system via the CAN bus.

Alerts can include an audible warning, seat vibrations, or visual cues on the dashboard.

For advanced implementations, the system can communicate with vehicle control systems (like lane-keeping assist or cruise control) via the CAN bus to initiate corrective actions, such as slowing down the vehicle.

Ensure the system is connected to the vehicle’s power supply with appropriate fuses and voltage regulators to handle the automotive environment’s power fluctuations.

Integration Challenges:

Vibration and Noise: Automotive environments are noisy and vibrate, which can affect camera stability. Use vibration-damping mounts for the camera.

Temperature Variations: Automotive environments experience extreme temperature variations. Use automotive-grade components designed to operate in such conditions.

Real-Time Processing: Ensure that the onboard computer can handle real-time video processing with minimal latency.

Safety and Compliance: Ensure the system complies with automotive safety standards and does not interfere with critical vehicle systems.