PPG Authentication Pre-Collection Trigger Logic
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Solution Overview
Problem
Current identity authentication methods based on photoplethysmogram (PPG) signals face challenges in timeliness due to long signal collection times and high power consumption, especially when periodic collection is required for instant authentication.
Innovation Solution
Implementing a PPG authentication method where a terminal detects pre-collection trigger conditions such as application initiation, geographical proximity, or scheduled events to pre-collect PPG signals, allowing for immediate authentication without continuous resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If periodic PPG signal collection is performed to enable instant authentication, then authentication timeliness is improved, but power consumption increases
Solution Approach 1:
The system performs PPG signal collection in advance based on trigger conditions (application launch, geographic location, scheduled time) before authentication is actually needed. This preliminary action ensures that when authentication is required, the signal is already available, eliminating the need for continuous periodic collection and reducing power consumption while maintaining instant authentication capability
Solution Approach 2:
Instead of continuous periodic collection, the system uses event-driven periodic collection triggered by specific conditions (application launch, geographic location, scheduled time). This transforms continuous resource consumption into conditional, intermittent collection that maintains authentication timeliness while significantly reducing overall power consumption
2Reliability
If PPG signal collection time is extended to ensure signal stability, then authentication reliability is improved, but authentication timeliness deteriorates
Solution Approach 1:
The system collects PPG signals in advance when trigger conditions are met, performing the signal acquisition and stability verification before authentication is actually needed. This preliminary action resolves the contradiction by ensuring both signal stability (through adequate collection time) and authentication timeliness (by having the signal ready beforehand)
3Productivity
If continuous PPG signal collection is performed to ensure instant authentication, then authentication timeliness is improved, but resource consumption increases
Solution Approach 1:
The system performs PPG signal collection in advance based on specific trigger conditions rather than continuously. This preliminary action ensures authentication responsiveness when needed while avoiding the wasteful continuous resource consumption of traditional periodic collection methods
Solution Approach 2:
The system dynamically adjusts the PPG signal collection strategy based on trigger conditions (application launch, geographic location, scheduled time). Instead of static continuous collection, the system transitions to conditional collection that adapts to actual authentication needs, improving responsiveness while reducing resource consumption
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 timeliness of PPG authentication by using pre-collected signals and reduces power consumption by minimizing unnecessary signal collection, ensuring efficient and reliable identity verification.
Implementation Method 1
The PPG signal is a signal that is detected from a living tissue by using a photoelectric means and that reflects a blood volume change
Data Source
AI summary
A photoplethysmogram (PPG) authentication method and device, where it is detected whether a terminal currently meets a PPG signal pre-collection trigger condition, and collection of a current PPG signal of a user is triggered only when the PPG signal pre-collection trigger condition is met such that the PPG signal of the user is pre-obtained before an application requests PPG authentication. In this way, when it is detected that the application initiates a PPG authentication request, PPG authentication may be directly performed based on a most recently collected PPG signal, thereby ensuring timeliness of PPG authentication, avoiding resource consumption caused by periodic PPG signal collection, and reducing power consumption.