Driver Position Detection Using Macro-Capacitive Vehicle Sensors
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Solution Overview
Problem
Existing driver presence and position detection systems in vehicles fail to accurately determine a driver's position, particularly in non-seated positions during off-road driving, leading to unintended engagement or disengagement of vehicle features.
Innovation Solution
The implementation of a sensor platform using macro-capacitive sensors integrated into various vehicle components and a controller that computes real-time capacitive field changes to detect and adapt vehicle operations based on the driver's presence and position, enabling accurate detection of seated, leaning, standing, or other non-seated states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional driver presence detection systems are used, then the system structure is simple, but the driver position detection accuracy deteriorates in non-seated positions
Solution Approach 1:
The driver detection system is segmented into multiple independent macro-capacitive sensors positioned at different locations (seat, steering wheel, door panel) to detect driver presence and position separately, allowing accurate detection in both seated and non-seated positions without requiring a single complex sensor system
Solution Approach 2:
The macro-capacitive sensors are designed to perform multiple functions: detecting driver presence, determining driver position (seated, leaning, standing), and providing this information to the controller for various vehicle feature control decisions, replacing multiple specialized sensors with a unified multi-functional system
2Reliability
If vehicle features are automatically engaged based on driver presence, then vehicle safety is improved, but the driver's operational ability deteriorates when doors are removed
Solution Approach 1:
The system continuously monitors driver position through macro-capacitive sensors and provides real-time feedback to the controller, which automatically adjusts vehicle feature engagement based on detected position, ensuring safe operation while maintaining driver capability in both seated and non-seated positions
Solution Approach 2:
The vehicle feature engagement system transitions from static pre-programmed responses to dynamic adaptive control that continuously adjusts feature availability based on real-time driver position detection, allowing the system to respond appropriately to changing driver positions during off-road operations
3Adaptability or versatility
If the vehicle operates in non-seated driver positions, then off-road maneuverability is improved, but vehicle control safety deteriorates
Solution Approach 1:
The system performs preliminary detection of driver position using macro-capacitive sensors before allowing certain vehicle operations, and implements preliminary control adjustments to throttle and braking systems based on detected non-seated positions, preventing unsafe operations before they occur
Solution Approach 2:
The vehicle control system dynamically changes operational parameters such as throttle response and braking force based on detected driver position, adjusting these parameters to provide appropriate control characteristics for both seated and non-seated driving positions during off-road maneuvers
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution ensures safe and controlled vehicle operation by selectively altering throttle and braking responses, preventing unintentional acceleration or deceleration, and maintaining vehicle stability during off-road maneuvers, even when the driver is not fully seated.
Implementation Method 1
the sensor platform can include one or more macro-capacitive sensors (MCS) that detect changes in capacitive fields within the sensing zone of the vehicle to determine the presence and the position of a driver
Data Source
AI summary
Systems and methods for driver presence and position detection are disclosed herein. A method can include determining a presence and a position of a driver in a sensing zone of a vehicle using a sensor platform integrated into the vehicle, determining when the position of the driver indicates that the driver is not in a fully-seated position relative to a driver's seat of the vehicle, and selectively adjusting a vehicle parameter of the vehicle based on the driver not being in a fully-seated position.