Technical Support Center

Point of installation

Table of Contents

ADMA-G#

The ideal installation point for a gyro system inside a vehicle is at the theoretical center of motion, with the measuring axes of the system parallel to those of the vehicle.

Warning: Take care not to crush the IMU cable with the vehicle window or door closure, the cable might break, and the system delivers no/wrong data.

If installation at the center of motion is not possible, the ADMA system needs to be positioned at a point inside the vehicle which is more accessible to installation. In this case, the selected point should preferably lie on one of the axes or on a flat surface formed by two axes and containing the center of motion (for example in the boot, on the vehicle's longitudinal axis passing through the center of motion).

The ADMA's ideal position of installation in a vehicle is one in which the ADMA's measurement axes align with those of the vehicle, i.e. where the X measurement axis is parallel to the vehicle's longitudinal axis. It is difficult to actually achieve this ideal situation, therefore the resulted discrepancy in alignment needs to be compensated.

Note: Compensating the installation position describes how to compensate the installation position and alignment discrepancies of the ADMA. Safe and secure installation of the ADMA is essential to receive reliable data.

The GNSS antenna must be mounted on the roof of the vehicle. For best performance, it is necessary to mount the GNSS antenna(s) away from any object that may shadow the satellite signal. To reduce the influence of multipath, the antenna(s) should be mounted on a metal surface by using the magnetic mounts. We recommend to keep the system at least 30 cm away from glass surface or outer edges of the vehicle.

If the installation point on the roof of the vehicle can be freely selected, it is advisable to select a point directly above the ADMA. This is where the vector to the installation point of the ADMA is at its shortest and the effects of pitching and rolling are at a minimum.

ADMA-Speed#

Mount the ADMA-Speed antenna in a suitable position on the roof of the vehicle. The ideal position is in the front or back of the roof, on a rigid area away from any objects that may shadow the GNSS signal such as roof bars. The data processing unit can be installed anywhere in the vehicle.

Warning: Take care not to crush the IMU cable with the vehicle window or door closure, the cable might break, and the system delivers no/wrong data. Safe and secure installation of the ADMA is essential to receive reliable data.

Do not mount the ADMA-Speed nearby or directly on a glass roof. We recommend to keep the system at least 30 cm away from glass surface or outer edges of the vehicle.

The ADMA-Speed default mounting offsets with fitted GNSS antenna:

6️⃣ Parameter / Mounting offset position fitted GNSS Antenna

ADMA-Slim#

The ADMA-Slim can be installed in a suitable position anywhere in or on the roof of the vehicle.
The GNSS antenna must be mounted on the roof of the vehicle. For best performance, it is necessary to mount the GNSS antenna(s) away from any object that may shadow the satellite signal.
Install the ADMA-Slim on a rigid system. Ensure that a rotational or linear motion of the ADMA-Slim is avoided while the vehicle is moving.
The ADMA-Slim is usually installed with the x-axis arrow on the ADMA-Slim facing towards the driving direction. Other installation positions are possible if the relevant modifications to the ADMA Webinterface (6️⃣ PARAMETERS) are made.

Warning: Take care not to crush the IMU cable with the vehicle window or door closure, the cable might break, and the system delivers no/wrong data. Safe and secure installation of the ADMA-Slim is essential to receive reliable data.

ADMA-Slim with detached GNSS antenna

ADMA-Slim with fitted GNSS antenna

With the ADMA-Slim fixture kit for GNSS antenna mounting it is possible to fix the antenna directly on top of the ADMA-Slim as shown below.

For installing the unit at the roof magnetic foots can be fastened.

When using the ADMA-Slim fixture kit, the following antenna offsets should be configured.

6️⃣ Parameter / Mounting offset position fitted GNSS Antenna

Applikationsingenieur | bei GeneSys seit 2014

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