The RT-Range is used for two functions: accurate (3cm) measurement of the relative motion between two vehicles and precise (2cm) measurement of lane position. All measurements are online, in real-time and output on a CAN bus, including the Target vehicle measurements being relayed in the Hunter vehicle’s CAN bus.
Verifying the accuracy of radar and other sensors can be performed subjectively. The RT-Range is a precision tool for evaluating these measurements numerically and objectively. Typical applications include adaptive cruise control, accident avoidance and other advanced technologies.
Lane departure warning systems are being developed and fitted to vehicles now. The RT-Range can be used to verify their accuracy and to increase the understanding of lane positioning.
Vehicle-to-vehicle measurements are performed by measuring the position of the two vehicles and then transmitting the position of the Target to the Hunter using Wireless LAN radio. This is fast, has very low delay and can be used worldwide, license-free. Any additional delays or lost packets from the Target are extrapolated with minimal loss in precision. Wireless LAN can operate over 200m in noise-free environments.
The position of the radar (or sensor) on the Hunter can be defined at any location. Similarly, the measurement point on the Target can be defined at any point. There is no need to mount the RT3000 products at special locations in the vehicle. These measurement points are independent of the Lane Position measurement points.
Lane Position Measurements
There are three steps to measuring Lane Position. First the lane markings are surveyed; then up to 8 lane markings are combined into a map; finally the actual vehicle position is compared to the map. This leads to exceptionally accurate and reliable Lane Position measurements. All the tools to survey the lane markings and build the map are provided.
The measurements from three points in the vehicle are available simultaneously. This allows the system to test several sensors at the same time. The RT-Range automatically selects the correct lines in the map and measures to them.
The RT-Range also computes the reference distance along the map so that graphs can easily be overlaid.
The RT-Range can be installed quickly into a vehicle. Training is simple and the system is very easy to use. Results can be obtained within hours of receiving the equipment.
On-site training can be provided to help engineers get to work quickly.
The measurements in the RT-Range are based on proven RT3000 products. The specifications for the RT3000 products can be found in the RT3000 User Manual. Extensive testing has been performed to verify the accuracy of these measurements, contact Oxford Technical Solutions for further details.
Vehicle to Vehicle
Real-time output on CAN bus
Target CAN in Hunter vehicle
Long, 200 m range
1 km range option
Range to mobile target
Range to fixed point
Direction to target
Relative speed of target
Configure targets as polygons (up to 24 points) for realistic testing
Steering robot interface
Trigger tests on range to mobile or fixed target
Many more measurements
Real-time Output on CAN bus
Lane Position Measurement
Lane Lateral Velocity
Three Measurement Points
Road Survey Tools
Low Latency (<10ms)
100Hz Update Rate
Based on RT3000 Products
Real-Time PC Display
Safe on Public Highway
Full Access to RT3000 Outputs
Technical Specification for Vehicle-to-vehicle Measurements
|Longitudinal Range Rate||±50m/s||0.02m/s|
|Lateral Range Rate||±20m/s||0.02m/s|
|Resulting Range Rate||±50m/s||0.02m/s|
|Resulting Yaw Angle||360°||0.1°|
Technical Specification for Lane Measurements
|Lateral Distance to Lane||±30m||0.02m|
|Lateral Velocity to Lane||±20m/s||0.02m/s|
|Lateral Acceleration to Lane||±30m||0.1m/s²|
Advanced Driver Assistance Systems
Adaptive Cruise Control
NHTSA LDW (Lane Departure Warning)
NHTSA FCW (Forward Collision Warning)
Blind Spot Detection
Autonomous Emergency Braking
Rear Collision Warning