Vehicle UWB Ranging Initiation via Multi-Sensor Approach Detection
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Solution Overview
Problem
Current ultra-wide band ranging systems in vehicles require a user action or ranging intent from user equipment to initiate the ranging process, leading to increased energy consumption and a suboptimal user experience, as they lack the ability to autonomously detect a person's approach and initiate the ranging session based on that detection.
Innovation Solution
The system improves ultra-wide band ranging by using sensor data from microphones, ultrasonic sensors, radar sensors, Bluetooth low energy sensors, or cameras to determine a person's approach to the vehicle and initiate the ranging session independently, eliminating the need for a ranging intent from user equipment and optimizing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the vehicle waits for a ranging intent from user equipment to initiate UWB ranging, then the system ensures accurate user initiation, but the user experience deteriorates and energy consumption increases due to passive waiting and fallback mechanisms
Solution Approach 1:
The vehicle performs preliminary detection of the user's approach using sensors (camera, radar, ultrasonic, microphone, or Bluetooth) before the UWB ranging session is actually needed. This preliminary detection triggers the ranging session proactively, eliminating the need for the user to initiate it manually and reducing energy consumption by avoiding unnecessary fallback mechanisms.
2Ease of operation
If the vehicle continuously monitors for user approach to initiate UWB ranging, then the user experience improves through passive triggering, but the system complexity increases due to multiple sensor integration
Solution Approach 1:
The vehicle utilizes existing multi-functional sensors (camera, radar, ultrasonic, microphone, Bluetooth) that serve multiple purposes - both for general vehicle operations and for detecting user approach. This eliminates the need for dedicated additional sensors, reducing system complexity while enabling passive UWB ranging initiation.
3Productivity
If the vehicle initiates UWB ranging without validating user approach, then the ranging session starts quickly, but false initiation occurs leading to unnecessary energy consumption
Solution Approach 1:
The system continuously receives feedback from multiple sensors about the user's presence and approach. This feedback is processed to determine whether the user is actually approaching the vehicle, providing a validation mechanism that prevents false initiation of UWB ranging sessions while maintaining quick response time when genuine approach is detected.
Data Source
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Figure 3
AI summary
Embodiments relate to a method (100) for improving an ultra-wide band ranging session of a vehicle. The method comprises obtaining (110) sensor data indicative of an approach of a person to the vehicle. Further, the method (100) comprises determining (120) an approach of the person to the vehicle based on the sensor data and initiating (130) the ultra-wide band ranging session based on the determined approach.