Compass Mirror: Description

The compass feature is designed to be integrated into an electro chromic interior rearview mirror.

The mirror assembly shall display a compass heading. The compass mirror then take the sensor information to determine static field strengths and rotating field information to determine an accurate compass heading.

SPECIFICATIONS

Fig 1: Specifications - Compass Mirror

Courtesy of HYUNDAI MOTOR CO.

SWITCH POINT ACCURACY

The compass module shall, while compensating for the vehicle magnetic fields, until the Earth's varying magnetic fields to determine direction.

[SWITCH POINTS]

Fig 2: Compass Switch Points

Courtesy of HYUNDAI MOTOR CO.

NOTE: There should be hysteresis at each switch point. Switch points between the 8 cardinal directions, these switch points are +/- 10°.

Fig 3: Identifying Mirror Compass Diagram Display

Courtesy of HYUNDAI MOTOR CO.

COMPASS DISPLAY INTERVALS

Compass display should be updated at every two seconds.