Selective Door Unlocking via Proximity Password Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing door unlocking systems for vehicles, such as keyless entry systems, face security issues due to simultaneous unlocking of all doors, which can allow unauthorized access, and previous solutions using GPS-based systems are complex and do not adequately address the risk of unauthorized entry, compromising user convenience.
Innovation Solution
A door unlocking system utilizing a portable device and in-vehicle devices that employ short-range wireless communication modes, where a password generator issues a unique password to the portable device, which is then detected by corresponding in-vehicle devices to unlock only the door approached by the user, simplifying the circuit configuration and enhancing security and convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If all doors are unlocked simultaneously using a keyless entry system, then user convenience is improved, but security is compromised allowing unauthorized access
Solution Approach 1:
The unlocking function is segmented by door location. Instead of unlocking all doors simultaneously, the system divides the vehicle's door system into independent controllable units, allowing selective unlocking of only the door closest to the user based on detection of which door's proximity sensor is triggered.
Solution Approach 2:
The system applies different unlocking behavior to different doors based on local conditions. Each door has its own sensor detecting the user's proximity, and only the door with the detected user presence is unlocked, creating localized security zones rather than uniform system-wide unlocking.
2Object-affected harmful factors
If GPS-based systems are used to control door unlocking, then security is improved, but circuit complexity increases
Solution Approach 1:
The system extracts the core security function from complex GPS-based location systems and implements it using simple proximity sensors near each door. This removes the need for sophisticated satellite navigation hardware while retaining the essential capability of determining user position relative to the vehicle.
Solution Approach 2:
The patent uses inexpensive, simple proximity sensors instead of expensive GPS receivers. These basic sensors provide sufficient information for the security function without requiring complex processing hardware, achieving security through simple, low-cost components.
3Object-affected harmful factors
If GPS information is used to determine unlocking behavior, then security control is improved, but user convenience is reduced due to limited applicability
Solution Approach 1:
The system dynamically adapts to different user situations by detecting which door the user is approaching. This allows the same system to provide appropriate security control for various scenarios - whether the user is entering from the driver side, passenger side, or rear - without requiring manual configuration or location-based rules.
Data Source
AI summary
An electronic key executes keyless entry communication or RFID communication. A wireless controller mounted on a vehicle executes keyless entry communication within a range of a radius of several meters to several tens of meters. An RFID reader is assigned to each door and executes RFID communication within a range of a radius of approximately 1 meter. In regards to unlocking the door, the wireless controller issues a password by the keyless entry communication, and a wireless circuit temporarily stores the issued password. The RFID readers search for the password stored in the electronic key by the RFID communication, and the wireless controller unlocks a door corresponding to the RFID reader for which the password was detected.