Vehicle Digital Key Sensor Sequencing for Low-Standby Power
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Solution Overview
Problem
In-vehicle systems with multiple authentication sensors experience increased power consumption during standby due to continuous operation of all sensors, which is inefficient and wasteful.
Innovation Solution
A lock control device and vehicle digital key system that includes a controller to manage authentication sensors, activating only the necessary sensors based on successful authentication by a primary method, and selectively activating secondary sensors only when the primary sensor functions correctly, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple authentication sensors are continuously operated during standby, then authentication reliability is improved, but power consumption increases
Solution Approach 1:
The patent applies dynamics by transitioning authentication sensors between different operational states (standby and active) based on system needs. The controller dynamically adjusts sensor operation modes, switching from continuous operation to on-demand activation, thereby optimizing the balance between authentication reliability and power consumption.
Solution Approach 2:
The patent implements periodic action through sequential activation of authentication sensors. Instead of continuous operation, sensors are activated in a predetermined sequence only when authentication is required. This periodic, on-demand activation reduces power consumption while maintaining authentication reliability through multiple available methods.
2Speed
If all authentication sensors are activated simultaneously, then authentication speed is improved, but power consumption increases
Solution Approach 1:
The patent applies segmentation by dividing the authentication process into sequential stages with different sensors activated at different times. The controller activates sensors one by one in a predetermined sequence based on authentication requirements, rather than activating all sensors simultaneously. This segmented approach reduces power consumption while maintaining authentication capability.
Solution Approach 2:
The patent uses dynamics to adjust sensor activation timing and sequence based on real-time authentication needs. The controller dynamically determines which sensors to activate and when, optimizing the balance between authentication speed and power consumption by activating only necessary sensors at appropriate times.
3Adaptability or versatility
If multiple authentication methods are provided, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent applies universality through the controller that manages multiple authentication sensors with different functions. The controller serves as a universal management unit that coordinates various authentication methods (first and second authentication sensors), enabling the system to adapt to different authentication scenarios while centralizing control logic to manage complexity.
Solution Approach 2:
The patent implements feedback through the controller that monitors authentication sensor status and adjusts activation sequences based on authentication outcomes. The system uses feedback from authentication attempts to determine which sensors to activate next, optimizing the authentication process while managing device complexity through intelligent control.
Data Source
AI summary
A lock control system or a vehicle digital key system including an in-vehicle device, a mobile device, and a server controls operations of a plurality of authentication sensors for authenticating a user of a vehicle by at least one of a plurality of authentication methods. Thereby, it is possible to reduce a power consumption during standby.