How do the systems work in the ZF Innovation Truck?
ZF engineers explain on-site the functions of Evasive Maneuver Assist, Highway Driving Assist, and SafeRange.
It can automatically avoid obstacles in an emergency (Evasive Maneuver Assist), autonomously stay on track and maintain the distance from the vehicle in front (Highway Driving Assist). It takes control when maneuvering at the ramp (SafeRange).
The ZF Innovation Truck 2016 is full of innovative advanced driver assistance systems that currently do not exist in any other commercial vehicle.
The Evasive Maneuver Assist (EMA) was used in the ZF Innovation Truck 2016 for the first time in the world. Acting through several stages, the assistance system detects an obstacle, warns the driver, autonomously initiates emergency braking and steers the truck past the obstacle if there is a threat of collision.
In cooperation with WABCO, ZF has networked an emergency braking system (Advanced Emergency Braking System – AEBS), which is already statutory today, with sensors and the electrohydraulic ReAX steering system. Braking and chassis systems stabilize the vehicle during the evasive maneuver – an essential performance, particularly for fully loaded 40-ton trucks.
The gain in safety thanks to systems like EMA is immense: The system can effectively prevent collisions that still occur all too frequently – particularly when tired or inattentive truck drivers are too slow to see the tail end of a traffic jam.
Another function of the ZF Innovation Truck prevents unintended wandering off the lane – whether caused by inattention, distraction or microsleep: The Highway Driving Assist (HDA) warns the driver when the truck veers off track. If the driver does not react, the system actively keeps the semitrailer within the longitudinal road markings. Adaptive Cruise Control (ACC), including Follow-to-Stop functionality, is also integrated and automatically maintains a safety distance from the vehicle in front across all speeds.
ZF already presented this function for cars in 2015, but in order to transfer it to trucks it was also necessary to link camera and radar sensors via an electronic system with the ReAx truck steering system and the ZF TraXon Hybrid transmission.
A third function contributes to making logistic processes at depots and reloading hubs safer and more efficient: SafeRange allows the ZF Innovation Truck to approach ramps automatically and more easily, thus saving time and avoiding collisions.
For this purpose, two camera sensors and a computer are located on the ramp. Two markings on the rear ("targets") help the cameras detect the truck's position. The truck uses the Openmatics telematic system to access the camera information and computer, which has already calculated the optimal travel path for docking. The SafeRange ECU on the truck then converts this data into action. It coordinates and controls all systems required for automated driving, including the electrohydraulic steering system ReAX and the hybrid transmission system TraXon Hybrid. This all-electric mode enables local zero-pollution and quiet maneuvering.
Thanks to SafeRange, depots are becoming safer as well: If a person moves between the truck and ramp during the docking maneuver, the camera will detect this and stop the maneuver.