Vehicle Access Control Using Matched Human Motion Sensing
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Solution Overview
Problem
Existing vehicle access systems lack sufficient security measures to prevent unauthorized access and relay attacks, particularly in detecting the movement of individuals rather than mobile devices, which can be exploited by unauthorized users.
Innovation Solution
An access system for vehicles that utilizes both a vehicle-mounted motion sensor and a portable motion sensor to independently detect and compare the movement sequence of a person, ensuring the detected movements relate to the same individual, thereby enhancing security by relying on the portable sensor's prior identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If motion sensors are used to detect person's movement for access control, then security is improved, but the system complexity increases due to needing multiple sensors and coordination
Solution Approach 1:
The system divides the sensing function between two separate motion sensors: a portable sensor carried by the person and a vehicle-mounted sensor. Each sensor independently detects movement, and their results are coordinated by comparing movement sequences. This segmentation allows the system to maintain high security through multiple detection points while managing complexity by giving each sensor a specific, simplified role.
Solution Approach 2:
The control system acts as an intermediary that receives movement data from both the portable and vehicle-mounted sensors, compares their movement sequences, and determines access authorization. This intermediary coordination layer manages the complexity of integrating multiple sensors by providing a centralized comparison mechanism rather than requiring direct sensor-to-sensor communication.
2Ease of operation
If the system detects movement of the portable device itself, then device tracking is simplified, but security is reduced because it cannot distinguish between authorized and unauthorized device possession
Solution Approach 1:
Instead of tracking the portable device itself, the system inverts the approach by tracking the person carrying the device through movement detection. The portable sensor detects the person's movement, and this movement is compared with movement detected by the vehicle-mounted sensor. This inversion allows the system to verify that the same person is present at both locations, providing security based on biometric movement patterns rather than device tracking.
Solution Approach 2:
The system changes the detection parameter from device position to person's movement pattern. By detecting and comparing movement sequences (acceleration, velocity, movement patterns) rather than simple device location, the system can identify the same person across different locations. This parameter change enables security verification based on the difficulty of replicating human movement patterns.
3Adaptability or versatility
If multiple sensor types are supported for movement detection, then system versatility is improved, but the difficulty of detecting and measuring movement increases
Solution Approach 1:
The system is designed to work with multiple types of motion sensors (accelerometers, gyroscopes, magnetometers, cameras, radar, LIDAR) by implementing a universal comparison mechanism. The control system compares movement sequences from whichever sensor types are used, without requiring sensor-specific processing logic. This universality allows the system to accommodate different sensor technologies while maintaining consistent security verification through movement pattern comparison.
Data Source
Figure 1
AI summary
The invention relates to an access system for a vehicle (2), comprising at least one vehicle-mounted movement sensor (4), at least one movement sensor (12) which can be carried by a person (14), in each case for sensing a single course of movement of the person (14) moving outside of the vehicle (2) and carrying the portable movement sensor (12), an access control unit (8) of the vehicle (2) for locking and/or unlocking at least one door (10) of the vehicle (2), and a controller (6) for comparing the course of movement of the person (14) sensed by means of the vehicle-mounted movement sensor (4) with the course of movement of the person (14) sensed by means of the portable movement sensor (12). The access control unit (8) can be actuated by means of the controller (6) on the basis of the comparison of the two courses of movement such that the access control unit (8) automatically locks or automatically unlocks the at least one door (10). The invention additionally relates to a method, to a computer program product, and to a computer-readable medium.