Continental develops control element for automated driving

With the development of autonomous vehicle technology shaping up, it is only a matter of time until fully automated vehicles are part of global mobility. As we move towards automated vehicles, the role of car drivers will change step by step. 

Global technology company Continental has developed a central input device, a ‘Smart Control’ input device that will transparently and intuitively configure the change of role from driver to user of automated driving functions. The device will informs vehicle occupants if automated driving or manual driving is possible and can also be used to control driving maneuvers. 

Commenting on the development of ‘Smart Control’, Dr Frank Rabe, head of the instrumentation and driver HMI business unit, Continental says,  “The success of automated vehicles depends on the user’s trust and acceptance. We achieve this with a holistic human-machine interface, which transparently informs users with intuitive interaction concepts and which enables them to control driving maneuvers. With Smart Control, we have developed a new element for the dialogue between user and vehicle.” 

 Cooperative automation

For ensuring safe division of tasks between driver and vehicle in the conditionally and highly automated driving phases (SAE level 3 and 4), the new ‘Smart Control’ input device will perform several key tasks. As an element in the center console of the vehicle, it will continuously inform the vehicle occupants of the current driving mode using a kinematics function. 

As for manual driving mode it will disappear into the center console, allowing the driver to only use the touchpad on top, for controlling the infotainment system. For instance, as soon as the vehicle is on a section of road where automated driving can be engaged, the device comes out of the center console and the driver can activate automation. The device can be operated in a similar way to a joystick supported by variable haptic feedback. 

Along with additional color coding the Smart Control will provide clarification on the current status of automation, and depending on the driving mode, the input device, together with other elements in the cockpit such as the fully digital instrument cluster, lights up in a specific colour. 

Continental says that using this new system will significantly contribute towards keeping the users attention at an optimal level, even during automated driving. This is particularly important in ensuring the safety of the sensitive takeover phase at the end of a period of automated driving. 

“We call this cooperative automation. The vehicle performs simple driving tasks, such as keeping to the correct lane, completely independently, while the driver gives instructions for complex driving tasks, such as overtaking on the freeway, which the vehicle then performs automatically,” explains Dr. Rabe. This means that the driver is always involved in the control loop of the driving task. 

The input device can be switched to display the different information available on the digital instrument cluster – from maximum surroundings visualization, which displays all road users in the immediate vicinity, to a drastically reduced view that shows only the sections of road ahead. This function goes a long way to help build up trust in automated driving, by providing the right amount of information transparently and at all times. 

Design 

When designing the central input element, Continental carried out an ergonomics test to identify the right form and appropriate materials for an ergonomic and high-quality design. Currently, the design’s main focus is on functionality and it can be individually modified for specific manufacturers. As well as haptic feedback to confirm driver instructions, the developers also integrated a function that prevents unintentional operation by recognising whether the driver actually pressed something or simply touched the device accidentally. 

The central input element for automated driving is currently being tested in Continental test vehicles and the driving simulator to further test the concept of cooperative automation and optimise the specification of the device according to user acceptance.