Vehicle Sensor System Using Body-Conducted ID Signals
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Solution Overview
Problem
Current vehicle sensor systems face challenges in accurately detecting and verifying user interactions with buttons and occupant presence, often leading to false activations or missed commands due to the inability to differentiate between human input and other stimuli.
Innovation Solution
The implementation of a vehicle sensor system that uses a combination of ID circuits and sensor circuits to transmit and detect unique frequency signals through the body of the occupant, allowing the vehicle computing entity to confirm genuine user interactions by matching the detected signals with the occupant's presence and location within the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional sensor circuits are used to detect button activation, then the system can detect button presses, but false activations occur due to inability to differentiate human input from other stimuli
Solution Approach 1:
The sensor system is segmented into multiple independent circuits: ID circuits integrated in buttons that transmit unique identification signals, sensor circuits that detect these signals, and computing entities that process the data. This segmentation allows each component to specialize in one function, improving detection accuracy while maintaining manageable complexity through modular design.
Solution Approach 2:
An intermediary identification signal is introduced between the button and the activation detection process. The ID circuit embedded in each button transmits a unique frequency signal through the occupant's body, serving as an intermediary verification step that confirms genuine human interaction before triggering vehicle functions.
2Measurement precision
If sensor circuits detect signals through the occupant's body, then genuine user interactions can be confirmed, but the system complexity increases due to multiple circuits and signal processing requirements
Solution Approach 1:
The ID circuits serve multiple functions: they are integrated into buttons for identification purposes, transmit unique frequency signals through the occupant's body for presence detection, and enable verification of genuine user interaction. This multi-functionality reduces the need for separate dedicated circuits for each function, managing overall system complexity.
Solution Approach 2:
The occupant's body serves as the transmission medium for the ID signals, eliminating the need for separate wiring or contact mechanisms. The body naturally conducts the electrical signals from the buttons to the sensor circuits, providing a self-service detection mechanism that reduces physical complexity while maintaining precision.
3Reliability
If the system verifies occupant presence and location before activating functions, then safety is improved, but the response time increases due to additional verification steps
Solution Approach 1:
The ID circuits continuously transmit identification signals and the sensor circuits continuously monitor for these signals before activation is needed. The system performs preliminary detection and verification of occupant presence and location in advance, so when a button is pressed, the verification is already complete or can be rapidly confirmed, minimizing response time delay.
Solution Approach 2:
The sensor circuits provide continuous feedback to the computing entity about detected ID signals and occupant locations. This feedback mechanism allows the system to maintain an updated understanding of the vehicle environment, enabling rapid decision-making about function activation without requiring lengthy verification processes at the moment of button press.
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 enhances the accuracy of button activation detection, preventing false activations and ensuring that vehicle functions are only performed when intentionally commanded by the occupant, thereby improving user safety and system reliability.
Implementation Method 1
transmit an identification signal through a body of the occupant to a sensor circuit
Data Source
AI summary
A method includes receiving a first signal from a first button circuit in a first location indicating possible interaction with a corresponding interactable element by a user, and receiving sensed signal data from a first sensor circuit indicating changes in electrical properties of an electrode of the first sensor circuit The method includes determining whether the sensed signal data indicates detection of a first frequency identifying the first location based on receiving the first signal indicating the possible interaction with the corresponding interactable element. When the sensed signal data indicates detection of the first frequency identifying the first location, performance of a functionality associated with the corresponding interactable element is facilitated.