DSC sensor

The DSC sensor measures:

• Rotation of the vehicle around the vertical axis (yaw rate)
• Lateral acceleration of the vehicle
• Longitudinal acceleration of vehicle
  Fig 1: Identifying DSC Sensor And Plug Connection

  Courtesy of BMW OF NORTH AMERICA, INC.

The sensor element consists of 2 piezoelectric acceleration sensors. A spring-mounted weight is hung in the measuring cell of the acceleration sensor. During accelerated motion the 2 masses suspended on their compliance elements are also accelerated. The force necessary for this creates a mechanical voltage in the piezoelectrical material. The shift in electrical charge this creates is picked up with electrodes made of metal and processed as an electrical signal. The yaw rate is derived from the difference between the two acceleration signals. The DSC sensor thus delivers a yaw rate and an acceleration signal.

The longitudinal acceleration sensor is required for the drive-off assistant.

The DSC sensor is connected via the chassis CAN (F-CAN) with the DSC control unit.

The DSC control unit supplies the DSC sensor with voltage.