When using the IMU roof mount, the user has the option to translate the data from the roof to another point on the vehicle. By default, when the roof mount is enabled, a 1 m Z offset is added, translating the filtered speed down in to the vehicle, towards the centre of gravity.
If the Kalman Filter data is required relative to an alternate or more precise location on the vehicle, then measurements should be made from the centre of the IMU to the desired location. As the IMU is housed within the enclosure, precise measurements are not easy to make. So a Z measurement can be taken from the centre of the GPS antenna, provided 3 cm is subtracted from the physical measurement. Translation measurements need to be made in all 3 axis, X, Y and Z.
- VB3i (IMU04 ready)
- IMU04
- RLCAB119 VBOX – IMU connecting cable
- RLCAB001 / RLCAB066-2 – VB3i PC connection cable
- VBOX Setup Software
- VBOX Manager (optional)
Important note: IMU04 must be connected to VB3i before power is applied to ensure data is correctly synchronised.
- Fit the VBOX 3i into the test vehicle, and mount the IMU roof mount on the vehicle roof.
- Connect antenna from IMU roof mount to the primary antenna of the VB3i (antenna A).
- Connect RLCAB119 cable from left hand port on roof mount IMU (CAN/KF) to VBOX 3i V3-V5 25W D analogue input port.
- Take data translation measurements in X, Y and Z axis from centre of IMU, if required. Default 1 m under IMU.
- After IMU is connected, apply power to VBOX 3i.
- Enable IMU integration using VBOX Setup or VBOX Manager.
VBOX 3i V3-V5 and IMU04
