Vehicle Lock Anchor Control for Secure Low-Power Smart Key Access
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Solution Overview
Problem
The existing smart key systems for vehicles lack a method to distinguish between a legitimate driver and an outsider, leading to high power consumption and potential security breaches when waiting for signal confirmation from a portable terminal.
Innovation Solution
A lock control apparatus for vehicles that includes a plurality of anchors configured to receive signals from a terminal, a communication module for CAN communication, a detector on the door, and a processor to manage the anchors' modes (sleep or waiting) based on signal reception and waiting times, thereby reducing power consumption and enhancing security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the smart key system continuously waits to receive a signal from the portable terminal, then the system can detect the driver's approach and enable convenient access, but the power consumption increases and causes battery discharge
Solution Approach 1:
The anchor's operational state is dynamically adjusted between waiting mode and sleep mode based on whether a signal is received. The anchor transitions from an active listening state to a low-power state, and can be reset to waiting mode when signals are detected, creating a dynamic power management system that adapts to operational needs
Solution Approach 2:
The system implements periodic operation by having anchors enter sleep mode after a waiting period and can be reset to waiting mode when signals are received. This periodic cycling between active and inactive states reduces overall power consumption while maintaining the capability to detect signals when needed
2Reliability
If the smart key system waits for signal confirmation from the portable terminal, then access control can be implemented, but the system cannot distinguish between a legitimate driver and an outsider
Solution Approach 1:
The system divides the vehicle into multiple zones with separate anchors positioned at different locations. Each anchor independently receives and processes signals, allowing the system to triangulate the terminal's position and determine which zone the driver is approaching. This segmentation enables both security verification and accurate driver identification
Solution Approach 2:
The system uses feedback from multiple anchors receiving signals to determine the terminal's position and validate authentication. The processor analyzes signals from different anchors to confirm the driver's identity and intended door, providing feedback-based security verification that distinguishes legitimate drivers from outsiders
3Measurement precision
If multiple anchors continuously operate in waiting mode, then the system can accurately track the terminal's position, but the power consumption increases significantly
Solution Approach 1:
The operational state of each anchor is dynamically controlled based on its need to participate in position tracking. Anchors transition between waiting mode (active signal reception) and sleep mode (low power consumption) based on whether they are currently receiving signals or need to maintain position tracking capability
Solution Approach 2:
The position tracking function is segmented across multiple anchors, where only the anchors currently needed for tracking maintain waiting mode while others enter sleep mode. This segmentation allows the system to maintain measurement precision using only the necessary subset of anchors, reducing overall power consumption
Data Source
AI summary
A lock control apparatus for a vehicle includes anchors to receive a signal transmitted from a terminal; a communication module to communicate using controller area network (CAN) communication; a detector installed on a door to input a detection signal; and a processor to receive the signal transmitted from the terminal from at least one of the anchors through the communication module, calculate a position of the terminal based on the signal transmitted from the terminal, determine whether to unlock the door in response to the position of the terminal and the detection signal, and control an engine to start. The processor controls the anchors to enter a sleep mode in response to waiting times of the anchors and resets the anchors to release the sleep mode and controls the anchors to enter a waiting mode in response to the number of anchors transmitting the signal from the terminal.