UWB Vital Sign Simulation for Non-Contact Privacy Protection
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Solution Overview
Problem
Non-contact vital sign measurement technologies using ultra-wideband radar expose the privacy of individuals whose vital signs are measured without their permission, as existing methods cannot effectively protect the privacy of those not using the device.
Innovation Solution
A device equipped with an ultra-wideband communication interface and processor generates a virtual vital sign by simulating a fake person's signs, combining it with the user's vital signs, and outputs this data to an external device via a UWB antenna, incorporating context information and delaying the signals to prevent unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If non-contact vital sign measurement technology using UWB radar is used, then the convenience of measurement is improved, but the privacy protection of individuals whose vital signs are measured without permission deteriorates
Solution Approach 1:
The patent generates a synthetic vital sign signal that copies the structure and characteristics of real vital sign signals. This synthetic signal is then mixed with the actual vital sign signal, making it difficult for external devices to distinguish between the two. The copying principle allows the system to create a decoy signal that mimics the target signal's properties, thereby protecting privacy while maintaining measurement convenience.
Solution Approach 2:
The patent introduces an intermediary signal processing layer that combines the real vital sign signal with the synthetic signal before output. This intermediary mixing process creates a composite signal that obscures the original vital sign information from unauthorized external devices while preserving the signal's functionality for authorized use. The intermediary mechanism acts as a protective barrier between the real data and potential attackers.
2Adaptability or versatility
If vital sign data is output to external devices, then the functionality and versatility of the system is improved, but the security and privacy of the vital sign data deteriorates
Solution Approach 1:
The patent merges the real vital sign signal with the synthetic signal to create a composite output signal. This combining approach allows the system to maintain versatility and functionality by providing useful signal data to external devices while simultaneously enhancing security through the presence of the indistinguishable synthetic component. The merging principle enables both functional utility and protective obfuscation to coexist.
Solution Approach 2:
The patent modifies parameters of the vital sign signal by introducing the synthetic signal component, which changes the statistical and structural parameters of the output signal. These parameter changes make the signal more complex and harder to interpret for unauthorized devices, while still maintaining sufficient quality for authorized applications. The parameter transformation approach balances functionality with security by altering the signal's characteristics in a controlled manner.
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
The solution effectively protects the privacy of individuals by making it difficult for external devices to distinguish real vital signs from simulated ones, thereby preventing unauthorized measurement and maintaining secure communication.
Implementation Method 1
an ultra-wideband (UWB) communication interface including a UWB radar and a UWB antenna, the UWB communication interface being configured to detect a UWB scanning pulse transmitted by an external device to measure a vital sign of a user in a non-contact manner
Data Source
AI summary
A device for outputting a simulated vital sign, includes: an ultra-wideband (UWB) communication interface including a UWB radar and a UWB antenna, and configured to detect a UWB scanning pulse transmitted by an external device to measure a vital sign of a user in a non-contact manner; memory storing at least one instruction; and at least one processor configured to execute the at least one instruction, wherein the at least one instruction, when executed the at least one processor individually or collectively, cause the device to: based on the UWB scanning pulse being detected by the UWB communication interface, generate a virtual vital sign by simulating a vital sign of a virtual person, obtain simulated vital sign data by combining the vital sign with the generated virtual vital sign, and output, through the UWB antenna, a UWB signal component including the vital sign data toward the external device.