Vehicle Door Locking Using Obstruction Detection Beyond Key Distance
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Solution Overview
Problem
Conventional smart key systems fail to lock vehicle doors when the vehicle is out of the driver's view, leaving the vehicle in a dangerous state, as they rely solely on distance-based locking mechanisms.
Innovation Solution
A vehicle control system that includes a communicator, sensor, and controller to identify obstructions between the driver and the vehicle using camera, radar, or lidar sensors, and lock the doors based on the presence of an obstruction, movement route, and communication strength, transmitting warning messages to the user terminal if necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If distance-based locking mechanism is used, then the system is simple to operate, but the vehicle security is compromised when the vehicle is out of driver's view
Solution Approach 1:
The patent combines multiple sensing technologies (camera, radar, ultrasonic sensor) with the existing distance-based locking mechanism to create a comprehensive monitoring system. This merging allows the system to detect both distance and visual obstructions, resolving the contradiction by maintaining simplicity while enhancing security through integrated sensors that work together rather than as separate complex systems
Solution Approach 2:
The controller is designed to perform multiple functions: it processes distance information from the smart key, analyzes images from the camera to detect obstructions, receives data from radar and ultrasonic sensors, and makes locking decisions based on combined information. This multi-functionality allows a single system to address both operational simplicity and enhanced security requirements simultaneously
2Reliability
If obstruction detection using camera and sensors is implemented, then vehicle security is improved, but the use of energy increases
Solution Approach 1:
The system activates the camera and sensors periodically or event-driven rather than continuously. The controller monitors the smart key distance first, and only activates the camera and other sensors when the key is detected near the vehicle. This periodic activation significantly reduces energy consumption while maintaining security when needed
Solution Approach 2:
The system performs preliminary detection using low-power distance sensing from the smart key before activating higher-power sensors like the camera. This preliminary action filters out unnecessary activations, ensuring energy-intensive sensors are only turned on when actually needed for obstruction detection, thus balancing security with energy efficiency
3Measurement precision
If multiple sensors (camera, radar, lidar) are used to detect obstructions, then measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent divides the detection task across multiple sensors, each optimized for specific functions: camera for visual obstruction detection, radar for distance and velocity measurement, ultrasonic sensor for close-range detection. This segmentation allows each sensor to operate independently with optimized parameters, improving overall measurement precision while managing complexity through functional division rather than requiring a single complex sensor system
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents the vehicle from being left in an unsafe state by automatically locking doors when the driver is out of sight, enhancing security and preventing potential theft or intrusion.
Implementation Method 1
a camera; a radar sensor; and a lidar sensor, and the sensor may be further configured to acquire the surrounding information of the vehicle
Implementation Method 2
a radar sensor; and the sensor may be further configured to acquire the surrounding information of the vehicle
Implementation Method 3
a lidar sensor, and the sensor may be further configured to acquire the surrounding information of the vehicle
Data Source
AI summary
Provided is a vehicle, including: a communicator configured to perform communication with a user terminal or a remote control device; a sensor configured to acquire surrounding information of the vehicle; and a controller including a processor configured to process the surrounding information. The controller is configured to identify a location of the remote control device based on the communication and transmit a warning message to the user terminal when an obstruction is identified between the identified location of the remote control device and a location of the vehicle, based on processing the surrounding information.