Johnson Controls Develops Automatic Seat Pre-Adjustment System
The product can improve the effectiveness of such vehicle safety features as head restraints and airbags.
by Staff
January 19, 2014
Johnson Controls' automatic seat pre-adjustment system. Photo: Johnson Controls.
3 min to read
Johnson Controls' automatic seat pre-adjustment system. Photo: Johnson Controls.
Johnson Controls, a global leader in automotive seating systems and components, has developed an automatic seat pre-adjustment system that brings the driver’s seat into a comfortable and safe position based on an individual’s size.
“Many people do not position their vehicle seat correctly. This can lead to back pain and stiff legs, particularly during longer journeys,” said Dr. Andreas Eppinger, group vice president of technology management at Johnson Controls Automotive Seating. “The right seat adjustment is important for safety. This relates not only to the effectiveness of the head restraints, but also to the interaction with the airbags and safety belts. Therefore, we have developed a technology that allows vehicle seats to easily be pre-adjusted automatically.”
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Automatic pre-adjustment of the seat position is especially useful when more than one person drives the same vehicle in the company fleet.
The ergonomics specialists at Johnson Controls developed an algorithm that determines the optimal seat position based on the driver’s size. Based on this algorithm, the adjustment motors automatically move the seat to a position that is both comfortable and safe for that individual. In some cases, the driver may still need to fine-tune the seat position to suit personal preferences.
The experts from Johnson Controls examined the seat positions of more than 100 people.
“We discovered that correct positioning of the seat track cannot be derived directly from leg length, nor height adjustment of the seat derived directly from the torso length. Rather, the human body is more like a complex system. If you change one parameter, this has an impact on other variables,” explained Eppinger. “We were able to program the algorithm so that size was sufficient as the decisive adjustment criteria. This enabled very precise default adjustment that was rated as good by the participants in the series of tests we performed. Following minor manual readjustment, they rated the position as very good.”
A large majority of the test group found the pre-adjustment technology to be convenient and user-friendly.
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To operate the system, Johnson Controls has developed an app that allows drivers to input their size via smartphone. Alternatively, this information can easily be entered into the vehicle’s digital control console. It is also possible for an on-board camera to automatically measure body size before the driver even enters the vehicle and for the seat to move into the correct position.
It is also conceivable that the driver’s size could be stored in the customer profile for rental cars and car-sharing services. This information would be forwarded to the vehicle upon hire so that the seat can be adjusted before the driver enters the car.
“Connectivity in vehicles means far more than just access to the Internet and email. By networking the vehicles, comfort and safety can also be increased,” Eppinger said. “The automatic seat pre-adjustment is a good example of intelligent interfaces between humans and machines.”
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