RF Sensing Channel Switching for Accuracy, Power, and Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing RF-based sensing technologies face challenges in achieving accurate detection with reduced energy consumption and minimizing wireless interference, which can lead to false positives and negatives due to interdependence between single- and multi-channel communication technologies.
Innovation Solution
An RF system that dynamically switches between single-channel and multi-channel communication technologies based on confidence levels, using a single-channel for initial detection and multi-channel for verification, optimizing bandwidth, power consumption, and interference reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multi-channel communication technology is continuously used for RF-based sensing, then sensing accuracy is improved, but power consumption and bandwidth requirements increase
Solution Approach 1:
The system dynamically switches between single-channel and multi-channel communication technologies based on the confidence level of sensing events. When a sensing event meets the confidence criterion, the system transitions from power-efficient single-channel mode to accurate multi-channel mode for verification, and returns to single-channel mode after verification completes. This dynamic adaptation resolves the contradiction by adjusting the channel configuration according to actual sensing needs rather than operating continuously in high-power multi-channel mode.
2Measurement precision
If multi-channel communication technology is used for RF-based sensing, then sensing accuracy is improved, but wireless interference increases causing ghosting effects and false positives
Solution Approach 1:
The system activates multi-channel communication technology only temporarily when a sensing event meets the confidence criterion, rather than operating continuously. This dynamic switching limits the duration of multi-channel operation, thereby reducing cumulative wireless interference and ghosting effects while still achieving accuracy improvement through targeted verification of suspicious sensing events.
Solution Approach 2:
The system first performs sensing using single-channel communication technology to identify potential sensing events and evaluate their confidence levels. Only when a event meets the confidence criterion does the system activate multi-channel technology for verification. This preliminary filtering action prevents unnecessary multi-channel operation and reduces wireless interference while maintaining sensing accuracy for critical events.
3Use of energy by moving object
If single-channel communication technology is used for RF-based sensing, then power consumption is reduced, but sensing accuracy decreases
Solution Approach 1:
The system dynamically adjusts channel configuration based on sensing event confidence levels. For most normal operations, it operates in power-efficient single-channel mode. When a sensing event meets the confidence criterion, it temporarily switches to multi-channel mode for verification. This dynamic adaptation ensures power consumption is minimized while sensing accuracy is maintained for critical events.
Solution Approach 2:
The confidence level evaluation acts as an intermediary mechanism that determines when to switch between single-channel and multi-channel modes. This intermediary filter ensures that multi-channel technology is activated only when necessary for verification, balancing power consumption and sensing accuracy through intelligent decision-making rather than direct continuous operation.
4Use of energy by moving object
If single-channel communication technology is used for RF-based sensing, then power consumption and bandwidth are reduced, but sensing accuracy and reliability decrease
Solution Approach 1:
The system dynamically switches between single-channel and multi-channel modes based on confidence level evaluation. This dynamic adaptation ensures that the system operates in power-efficient single-channel mode for normal conditions while automatically activating multi-channel verification mode when sensing reliability is in doubt, thus maintaining overall sensing reliability without continuous high power consumption.
Solution Approach 2:
The confidence level evaluation provides feedback that triggers switching between communication modes. When the confidence level indicates a suspicious sensing event, the system activates multi-channel verification and uses the verification result to confirm or reject the event. This feedback mechanism ensures sensing reliability is maintained through targeted verification while preserving power efficiency for confirmed events.
Data Source
AI summary
The present invention relates to radio frequency based sensing based on multiple communication technologies (476, 486). Radio frequency based sensing is performed by a single-channel communication technology (476) in order to detect sensing events. A single-channel confidence level (470) for detecting a sensing event by performing radio frequency based sensing by the single-channel communication technology (476) is determined. Upon detecting that the single-channel confidence level (470) is above a first single-channel threshold level (474) and below a second single-channel threshold level (472) which is higher than the first single-channel threshold level (474), a multi-channel communication technology (486) for performing radio frequency based sensing is selected based on one or more radio frequency system criteria, and radio frequency based sensing is performed by the multi-channel communication technology (486).