Multi-frame Radar Processing for Mobile Body Part Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices face challenges in efficiently detecting body parts using radar signals while minimizing radio frequency exposure and maintaining optimal communication link quality.
Innovation Solution
The implementation of multi-frame radar processing in electronic devices, which involves transmitting radar signals, processing reflections across multiple frames to detect moving objects, and adjusting communication beams to ensure regulatory RF exposure compliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radar signals are transmitted continuously to improve body part detection reliability, then detection reliability is improved, but radio frequency exposure to the user increases
Solution Approach 1:
The patent implements periodic radar signal transmission by processing multiple radar frames over time intervals. The system transmits radar signals in periodic frames rather than continuously, allowing detection of body parts through temporal analysis of reflected signals while limiting overall RF exposure. This periodic approach enables reliable detection of periodic biological signals (breathing, heartbeat) without sustained high-power transmission.
Solution Approach 2:
The patent maintains continuous monitoring capability by processing a sequence of radar frames without interruption. Although transmission is periodic, the system continuously analyzes reflected signals across multiple frames to detect and track body parts, ensuring uninterrupted detection functionality while managing RF exposure through intelligent frame selection and processing.
2Measurement precision
If radar signals are transmitted at high power to improve detection accuracy, then detection accuracy is improved, but communication link quality may be degraded
Solution Approach 1:
The patent dynamically adjusts radar transmission parameters including power levels and frame rates based on detection requirements and communication conditions. The system adapts its radar operation in real-time, modulating transmission power and selecting appropriate frame processing modes to balance detection accuracy with communication performance, rather than using fixed high-power transmission.
Solution Approach 2:
The patent changes multiple operational parameters including radar frame rate, integration time, and transmission power to optimize the trade-off between detection accuracy and communication quality. By adjusting these parameters dynamically, the system achieves sufficient detection precision while minimizing interference with communication links.
3Reliability
If multiple radar frames are processed to improve detection reliability, then detection reliability is improved, but processing complexity increases
Solution Approach 1:
The patent segments the radar signal processing into distinct functional stages: frame acquisition, reflection analysis, body part detection, and result generation. By dividing the multi-frame processing into modular segments, the system manages complexity through structured organization of processing tasks, making the sophisticated multi-frame analysis more tractable and implementable.
Solution Approach 2:
The patent performs preliminary processing of radar frames by pre-analyzing reflections and identifying potential body parts before final detection decisions. This preliminary action prepares data structures and intermediate results that simplify subsequent processing steps, reducing the computational burden of comprehensive multi-frame analysis.
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 approach enhances the reliability of body part detection, reduces radar usage overhead, and maintains compliance with RF exposure regulations while supporting high-quality communication links.
Implementation Method 1
The radar transceiver may then transmit a set of radar signals
Implementation Method 2
the processor may determine that a body part is detected based on the phase information of the received radar signals
Data Source
AI summary
A method includes transmitting, via a transceiver, radar signals for object detection. The method includes determining whether a moving object is detected using received reflections of the radar signals corresponding to a current radar frame. In response to a determination that no moving object is detected using the current radar frame, the method includes determining whether a moving object is detected using received reflections of the radar signals corresponding to multiple radar frames. The method also includes generating a detection result indicating that (i) no moving object is detected using the multiple radar frames or (ii) the moving object is detected using either the current radar frame or the multiple radar frames.