-
Integrated Systems And Specialized Vehicles
Integrated Systems And Specialized Vehicles
-
Industrial Intelligence
-
Intelligent Transportation
-
-
Industry's first! What does a controller that makes the screen "come alive" look like?
Release time:
2026-05-27 11:12
In six-seater SUVs, there exists an awkward dilemma in the rear entertainment experience: the screens fixed on the back of the front seats make it difficult for third-row passengers to watch comfortably; while ceiling screens offer a wide view, they often compete with the sunroof for space. When a family drives on a long journey, the screen, as the core entertainment interactive interface in the cabin, cannot actively adapt to the position of the people.
The answer provided by the luxury flagship SUV, the Zeekr 9X, is to make screens "move for people". Hirain Technologies's ceiling screen controller solution has emerged accordingly, adapting to both three-phase brushless motors and conventional DC motors to precisely drive in-vehicle displays. It allows for horizontal sliding movement along an ultra-long 88cm guide rail and multi-level angle adjustment from 95° to 115°. No matter where the passenger is in the rear seat, the screen can precisely "move" to their face - this seemingly simple displacement is backed by millisecond-level computation and command output from the controller.
It's not difficult to make the screen move; what's challenging is to achieve precision, safety, and composure during movement.
To enable the screen to switch freely between sliding and folding, a deep collaboration of a precise electromechanical system is required. Among them, the controller, as the "smart brain", determines the precision, response, and safety of the movement, and also faces new challenges:
Unlike the simple control logic of traditional brushed motors, the installation method and phase relationship of the Hall sensor in a three-phase brushless motor are more complex. Moreover, the Hall signal is deeply coupled with the motor output state, posing higher requirements on the position processing logic of the controller and the motor control algorithm. Meanwhile, the axial folding of the folding screen involves multi-stage gear transmission, and the lost motion in the transmission system poses a dual challenge to the accuracy and immediacy of angle control.
Addressing the aforementioned challenges, Hirain Technologies's Ceiling Screen Controller solution provides a systematic approach from underlying algorithms to engineering implementation:
▎ Multi-axis coordination, making precision a norm
The product must simultaneously coordinate the three power sources of the brushless folding motor, DC sliding motor, and DC locking motor, achieving timing coordination within milliseconds. To meet the complex control requirements of the brushless motor, the team innovated in underlying algorithms, enabling precise analysis of Hall signals and real-time closed-loop control of motor status, thus ensuring stable motor output.
Based on this, for precise angle control of the folding screen, the team has developed a multi-level gear transmission idle stroke recognition algorithm to accurately control the movement angle of the folding screen. This solution can cover extreme operating conditions such as ±30% slope and -30℃ to 85℃, ensuring the screen maintains precise positioning regardless of extreme cold, heat, or rough roads.
▎ Evolution of anti-pinch technology, ensuring safety throughout
Based on the mature Anti Pinch Control Unit (APCU) technology accumulated by Hirain Technologies, this solution extends the anti-pinch function to the full motion area of horizontal sliding and screen folding. Through algorithm optimization, the anti-pinch force tolerance is further reduced, enhancing safety; meanwhile, the resistance learning logic is optimized to avoid accidental pushing by users affecting the algorithm's judgment, ensuring every opening and closing is smooth and reassuring.
Precision control and safety anti-pinch constitute the technical foundation of the product. However, Hirain Technologies did not stop at achieving functionality; instead, it transformed engineering language into brand charm that users can perceive:
Top-notch design and silent performance uphold the quality of the cockpit. The sliding and folding mechanism of the product is crafted by a globally renowned design team, where precision machinery and accurate control complement each other. Thanks to the optimization of control algorithms, the screen movement is smooth and silent, ensuring that even late-night screen adjustments won't disturb the rest of the family. This extreme pursuit of detail directly enhances users' recognition of the premium feel of the cockpit.
OTA iteration makes it possible to keep commonly used features fresh and updated. The controller supports remote OTA updates for the entire vehicle, indicating that this "smart brain" can continuously optimize and upgrade alongside vehicle model iterations. Years after the user takes delivery of the vehicle, they can still enjoy the latest control logic and functional experience, which is crucial for the long-term building of brand reputation.
Thanks to meticulous design verification and multiple iterations of optimization, Hirain Technologies's Ceiling Screen Controller integrates multi-axis coordination, precise driving, rapid response, sensitive anti-pinch, and smooth, silent operation, providing solid support for the excellent performance of the ZEEKR 9X's folding screen. Since mass production in October last year, this controller solution has undergone rigorous testing by tens of thousands of car owners, demonstrating high stability and maturity in complex in-vehicle environments.
Hirain Technologies's Ceiling Screen Controller drives every elegant movement of the screen with precise control, allowing machinery to serve the experience. In the future, Hirain Technologies will continue to delve deeper and work with partners to unlock the intelligent potential of automobiles and jointly define the next generation of intelligent mobile spaces.