Vehicle Radar Perimeter Security and Dynamic Door Control
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Solution Overview
Problem
Current vehicle security and control systems are not dynamically controlled based on vehicle perimeter information, leading to inefficiencies such as not automatically unlocking the closest door when approaching with a key fob, especially in scenarios like carrying a child seat for the back seat.
Innovation Solution
An ultra-short range radar system is integrated into the vehicle to dynamically control doors based on the location of a communication unit relative to the vehicle, using a multi-input multi-output (MIMO) radar system with an array of transmit and receive elements, and a controller to process signals and perform security and control actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional key fob proximity system is used, then the vehicle can be unlocked when the key is within range, but the system cannot dynamically determine which door to unlock based on the key's location
Solution Approach 1:
The patent replaces the traditional radio frequency (RF) key fob system with a radar-based detection system. The radar system uses electromagnetic waves to detect the position, orientation, and movement of the key fob, providing precise spatial information that RF alone cannot deliver. This substitution enables dynamic door selection based on real-time location data.
Solution Approach 2:
The patent introduces a radar system as an intermediary between the key fob and the door locking mechanism. The radar detects the key fob's position and translates it into control signals for specific doors, acting as a mediator that converts proximity information into actionable door unlocking commands based on spatial relationships.
2Length of stationary object
If a long-range radar system is used, then the detection range is extended, but false alarms increase and power consumption rises
Solution Approach 1:
The patent optimizes radar detection parameters including range, frequency, and power settings to match the specific requirements of vehicle proximity detection. By adjusting these parameters, the system achieves an optimal balance between detection range and false alarm reduction, ensuring reliable operation within the vehicle's immediate vicinity without excessive power consumption.
3Length of stationary object
If a long-range radar system is used, then the detection range is extended, but power consumption increases
Solution Approach 1:
The patent implements dynamic parameter adjustment where the radar system modifies its transmission power, pulse duration, and detection frequency based on operational conditions. This allows the system to extend detection range when necessary while consuming minimal power during normal operation, achieving energy efficiency without sacrificing detection capability.
4Measurement precision
If a narrow-field radar system is used, then the detection is more focused, but the field of view is limited
Solution Approach 1:
The patent employs multiple radar units positioned at different locations on the vehicle (front, rear, sides) to create a segmented detection coverage. Each radar unit provides focused detection in its specific direction, and together they form a comprehensive 360-degree field of view, maintaining both precision and broad coverage.
Solution Approach 2:
The patent transitions from two-dimensional radar detection to three-dimensional detection by incorporating vertical angle measurement and multi-height detection capabilities. This dimensional expansion allows the system to detect objects at different elevations and angles, providing both precision and comprehensive field of view coverage.
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
The solution effectively determines the closest door to unlock or open based on the key fob's location, reduces false alarms with a shorter detection range, and enhances security by identifying potential threats and alerting the owner, while maintaining low power consumption and a wider field of view.
Implementation Method 1
a radar system arranged in the vehicle, a maximum range of the radar system being less than 100 meters
Data Source
AI summary
A method and system perform perimeter security and control of a vehicle. The system includes a radar system arranged in the vehicle, a maximum range of the radar system being less than 100 meters, and a communication unit to communicate with the radar system. The system also includes a control system of the vehicle to control the platform based on the radar system. The control system dynamically controls each door of the vehicle according to a location of the communication unit relative to the platform.