Active Vehicle Seat Control for Motion Sickness Mitigation
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Solution Overview
Problem
Occupants of vehicles experience discomfort and motion sickness due to sensory mismatches caused by vehicle movements, particularly from accelerations and vibrations, which affect productivity and overall comfort.
Innovation Solution
Implementing a control system with sensors and active seats that adjust to counteract vehicle movements, using data from sensors to generate control signals for actuators to move the seat in various directions, thereby mitigating the effects of accelerations and vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If sensors and active seats are implemented to counteract vehicle movements, then occupant comfort is improved, but device complexity increases
Solution Approach 1:
The system segments the vehicle interior into multiple monitoring zones using multiple cameras, each capturing specific occupant states. This allows targeted analysis of different body parts (head, torso, limbs) independently, improving comfort monitoring precision while managing system complexity through modular camera placement and dedicated processing for each zone
Solution Approach 2:
The active seat serves multiple functions: it acts as both a support structure for the occupant and an actuator that actively counteracts vehicle movements. The seat integrates sensors, actuators, and control systems into a single multi-functional component, reducing overall system complexity while improving occupant comfort through coordinated movement compensation
2Measurement precision
If multiple sensors are used to monitor occupant state and vehicle movements, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system merges data from multiple independent sensors (cameras, accelerometers, gyroscopes) into a unified occupant state model. By combining visual data from cameras with motion data from inertial sensors, the system achieves comprehensive and precise occupant monitoring without requiring each individual sensor to be overly complex
Solution Approach 2:
The processor acts as an intermediary that receives raw data from multiple sensors, processes and correlates this information, and generates refined occupant state measurements. This intermediary processing layer integrates sensor inputs coherently, improving measurement precision while managing the complexity of handling multiple sensor streams through centralized processing
Data Source
AI summary
Devices and methods for a vehicle are provided in this disclosure. A device for controlling an active seat of a vehicle may include a processor and a memory. The memory may be configured to store a transfer function. The processor may be configured to predict an acceleration of the active seat of the vehicle based on a first sensor data and the transfer function. The first sensor data may include information indicating an acceleration of a vibration source for the vehicle. The processor may be further configured to generate a control signal to control a movement of the active seat at a first instance of time based on the predicted acceleration. Furthermore, the processor may be configured to adjust the transfer function based on a second sensor data including information indicating a detected acceleration of the active seat at the first instance of time.