Driver Monitoring System Description And Function: Notes
Components:
- DMS infrared camera (1)
- MHU screen (2)
Technical Description:
The system can detect any drowsiness or tiredness on the part of the driver based on a combination of the following signals:
- Eye tracking: Blink duration, eye movements, eye-closure frequency.
- Head tracking: Head position, head movements.
- Facial behavior: Yawning, squinting.
- Vehicle speed: The system can trigger a higher warning level based on vehicle speed.
For instance: At level 1, the system can detect driver based on vision, but at level 2, the system will trigger a warning because the speed of the vehicle is very high: 100 kph.
- Time of day: The system can trigger a higher warning level depending on if the vehicle is being driven at midnight or midday.
The system can detect distraction by registering when:
- The driver looks away from the road for too long.
- The driver has taken his hands off the steering wheel for too long.
- The driver has been driving for more than XX hours. The DMS system will be able to detect user's facial changes over time.
- The driver uses the telephone or smokes.
- Vehicle speed: The system can trigger a higher warning level if the vehicle is traveling at high speed.
The system can detect erratic driving based on the vehicle's information:
- Lane departure warning frequency
- Vehicle speed: The system can trigger a higher warning level if the vehicle speed is very high.
Theft detection:
- The DMS system continuously takes photographs when thief intrusion alert is activated.
- The DMS system sends any photographs that have been taken to a server via MHU. Should internet connection be unavailable at this time, the system will store the photographs that have been taken until all of them have been sent to the server.
The function is activated by default when the vehicle is started (after Ignition ON), and can be deactivated by the driver.
Sound and haptics are not generated by DMS at Level 1 alert.
When the Proactive Assistant is ON, the Voice Assistant reads DMS alerts to warn the driver.
Failure to observe any of the following advice may result in death or serious injury.
- Always drive carefully and do not rely completely on the driver monitoring system.
- Do not drive your vehicle if you feel tired or sleepy. Always take a break in these situations, as driving will otherwise be dangerous, and might result in serious injury.
- In some situations, the DMS might not be able to correctly identify the driver's state.
- The DMS might not work properly if the driver is wearing sunglasses which do not allow easy passage of infrared light.
- The DMS might not work properly if the driver's eyes are hidden behind the frame of the glasses.
- In some situations, depending on the type of mask used, the DMS might not be able to correctly identify the driver's state.
- The DMS might not work properly if the driver's eyes, nose or mouth are covered with a muffler, hat or other item.
- Do not cover the driver recognition camera with any object or stickers.
- Always keep all the sensors and cameras in the car in good condition.
Example of Schematic Diagram: