RF Emotional State Sensing With Presence-Based Mode Switching
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Solution Overview
Problem
Existing solutions for monitoring physiological arousal in response to abuse are obtrusive or raise privacy and legal concerns, and RF-based sensing requires configuration adjustments for optimal performance depending on the application and sensing goal.
Innovation Solution
A RF-based sensing system with adjustable operating modes, switching between configurations for presence detection and physiological parameter monitoring, using machine-learning models to determine an emotional state based on RF signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If RF sensing parameters are adjusted to optimally monitor physical and physiological parameters when a visitor is present, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The RF sensing system dynamically adjusts its operating mode based on the presence of visitors. When a visitor is detected, the system switches to a second operating mode with optimized RF sensing parameters for monitoring physical and physiological parameters. When no visitor is present, it operates in a first mode with standard parameters, thereby adapting the system complexity to the actual monitoring needs and improving measurement precision only when necessary.
Solution Approach 2:
The system changes RF sensing parameters (such as carrier frequency, power levels, and sensing algorithms) based on the detected presence of visitors. This parameter adjustment allows the system to optimize measurement precision for abuse detection when visitors are present, while maintaining lower complexity during normal operation when no visitors are detected.
2Measurement precision
If additional resources are allocated to better monitor user activities and adjust RF sensing parameters, then measurement precision is improved, but use of energy increases
Solution Approach 1:
The system dynamically adjusts its resource allocation and power consumption based on visitor presence. In the second operating mode (when visitors are present), the system allocates additional resources for high-precision monitoring of physical and physiological parameters. In the first operating mode (no visitors), it reduces resource allocation and power consumption, thereby improving detection accuracy only when the enhanced monitoring is actually needed.
3Measurement precision
If RF sensing operates in a mode optimized for physiological parameter monitoring, then measurement precision is improved, but ease of operation decreases
Solution Approach 1:
The system automatically detects visitor presence and self-adjusts its operating mode without requiring manual configuration. The controller monitors for visitor presence and autonomously switches between the first and second operating modes, eliminating the need for users to manually configure RF sensing parameters while maintaining high measurement precision when visitors are present.
Solution Approach 2:
The system automatically changes RF sensing parameters based on detected visitor presence, transitioning between different operating modes. This automatic parameter adjustment improves sensing accuracy for physiological monitoring when visitors are present, while maintaining operational simplicity by eliminating manual configuration requirements.
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
Accurately detects elevated emotional states by optimizing RF sensing parameters for physiological monitoring, reducing complexity and improving accuracy while addressing privacy and legal issues.
Implementation Method 1
Detecting such physiological arousal can be performed unobtrusively using radiofrequency (RF) based sensing
Data Source
AI summary
A method and system for determining an emotional state of a user based on a radiofrequency, RF, based sensing system are disclosed. The system comprises a presence detection unit configured to receive presence data and to determine a presence of the user and a visitor in an environment. The system further comprises a controller configured to receive a first and second input indicative of the presence of the user and the visitor respectively. The controller is further configured to, when the user is present, set the RF-based sensing system to a first operating mode, and when the user and the visitor are present, switch the RF-based sensing system to a second operating mode, wherein, when set to the second operating mode, the RF-based sensing system operates according to a second set of RF-sensing parameters that enable to sense one or more physical and/or physiological parameters of the user. The controller is further configured to obtain the RF signals when the RF-based sensing system is set to the second operating mode, determine the one or more physical and/or physiological parameters of the user based on the RF signals, and determine the emotional state of the user is an elevated emotional state based on the one or more physical and/or physiological parameters, wherein an elevated emotional state is an emotional state that deviates from a baseline emotional state of the user.