The RT-Split is ideal for accurate tyre slip measurements even in wet conditions. The RT-Split is a version of the RT where the IMU (inertial measurement unit) is in a separate enclosure. This lightweight IMU is ideal for wheel mounting since it reduces the influence on the wheel's dynamics. The RT-Split can measure slip angle while mounted on a wheel with an accuracy that is comparable to vehicle-mounted RT systems. The IMU survives shocks caused by normal driving without impacting accuracy. The system is not influenced by surface water and can be used in wet or dry conditions. For other vehicle dynamics tests, the RT-Split can be mounted inside the vehicle like any other RT product.
Tyre slip angle for wet and dry conditions
The RT-Split is a small and lightweight wheel-mounted sensor that measures tyre slip angle in all weather conditions with an accuracy of up to 0.15° at 50 km/h. The system comprises an accurate IMU module that is mounted on the desired wheel, while a separate CPU module that houses the necessary processors and GNSS receiver remains inside the car. As the RT-Split uses GNSS and inertial technology (rather than optical input), its measurements are equally accurate on dry, wet or even loose surfaces. This gives engineers greater flexibility than ever before when evaluating performance in different environments.
As well as measuring position with up to 1 cm accuracy, the RT-Split’s IMU also gives an accurate picture of the wheels acceleration (±30 g) and angular rate (±300°/s) in three axes at 100 Hz, providing a significant extra layer of useful information. An Ethernet and CAN bus interface allow measurements to be output in real-time as well as being logged internally. Additional data packets can also be generated in response to external events or at specific time/distance intervals, giving engineers maximum flexibility and allowing measurements to be synchronised to external events.
Designed for the automotive industry
The RT-Split includes CAN bus outputs, ABD robot interface, surface roll/pitch and many other important features needed by automotive customers. Optional acquisition of CAN bus data makes it easy to combine measurements from many sensors in one file. The RT-Split includes GNSS but the outputs are derived directly from the inertial sensors. This gives low noise, low latency and high bandwidth: the ideal combination.
Software package included
The RT-Split is supplied with all the necessary cables and GNSS antenna and includes our fully-featured NAVsuite software. This includes applications to configure and verify the sensor output, as well as the ability to post-process measurements—removing the need to purchase expensive third-party software. Our post-process software also allows DGPS corrections to be applied in a number of different ways, as well as applications to plot and export data.
Different models to suit your needs
Three models of RT-Split are available to meet different accuracy requirements. The RT3002X-Split is the top-end model measuring position to 1 cm accuracy and slip-angle to 0.15° at 50 km/h. The mid-range RT3100X-Split can achieve position accuracy to 0.4 m and slip-angle measurements accurate to 0.2° at 50 km/h while the entry-level RT2500X-Split achieves 2 m position accuracy and 0.25° slip-angle accuracy at 50 km/h.
Please note: Due to the varying sizes and configurations of car manufacturer’s wheels OxTS does not supply a mount with the RT-Split.
See the RT-Split in Action
Low weight IMU pod just 920 g
IP67 for wet conditions
1 cm position
0.05 km/h velocity
10 mm/s² acceleration
0.03° roll, pitch
0.15° slip angle
0.01°/s angular rates
ISO 17025 (opt.)
CAN acquisition (opt.)
Software suite included
Tyre slip measurement
|Position accuracy (CEP)|
|Velocity accuracy (RMS)||0.1 km/h||0.1 km/h||0.05 km/h|