Vehicle Lock Anchor Sleep Control for UWB Smart Key Security
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Solution Overview
Problem
Existing smart key systems in vehicles face issues with high power consumption and inability to distinguish between legitimate users and outsiders, leading to potential unauthorized access and battery discharge.
Innovation Solution
A lock control apparatus for vehicles that switches anchors to a sleep mode to reduce power consumption and efficiently receives signals from registered terminals, using ultra-wide band communication to track the terminal's position and control door locks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the smart key system continuously waits to receive signals from portable terminals, then the system can detect driver approach and enable convenient access, but power consumption increases causing battery discharge
Solution Approach 1:
The anchor is switched between wake modes (first and second wake modes) and a sleep mode in periodic cycles. During wake modes, the anchor actively receives signals from portable terminals to detect driver approach. During sleep mode, the anchor enters a low-power state. This periodic switching resolves the contradiction by enabling approach detection only when necessary while reducing power consumption during periods when detection is not required.
2Ease of operation
If the smart key system operates continuously to receive unlocking signals, then convenient access is enabled, but security against unauthorized access is compromised
Solution Approach 1:
The system periodically switches the anchor between wake modes and sleep mode, creating intervals where signal reception is active and intervals where it is inactive. This periodic operation enables convenient unlocking during wake modes while enhancing security during sleep modes when the system is less vulnerable to continuous unauthorized access attempts.
Solution Approach 2:
The anchor dynamically switches between different operational states (first wake mode, second wake mode, and sleep mode) based on system requirements. This dynamic state transition allows the system to adapt between prioritizing ease of operation (during wake modes) and prioritizing security (during sleep modes), resolving the contradiction through flexible operational adjustment.
3Measurement precision
If multiple anchors are installed in the vehicle to improve signal reception, then the system can track terminal position more accurately, but power consumption increases
Solution Approach 1:
Each of the multiple anchors installed in the vehicle is switched between wake modes and sleep mode periodically. During wake modes, anchors actively receive signals to enable accurate terminal position tracking. During sleep modes, anchors enter low-power states. This periodic switching across multiple anchors allows the system to maintain position tracking capability when needed while significantly reducing total power consumption compared to continuous operation of all anchors.
Data Source
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AI summary
The present disclosure relates to a lock control apparatus for a vehicle and a method of controlling the same that receive a signal of a terminal using a plurality of anchors installed in the vehicle, and set a sleep mode for each of a plurality of anchors in response to whether signals of the plurality of anchors are received and waiting times and reset the plurality of anchors according to a signal reception state to receive the signals, and thus it is possible to prevent a battery from being discharged by reducing power consumed by the plurality of anchors, improve performance obtained by tracking a position of the terminal, and improve security performance of the vehicle by preventing hacking of a smart key.