Vehicle UWB Ranging Control for Lower Energy Use
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Solution Overview
Problem
Excessive use of ultra-wide band (UWB) ranging intents leads to high energy consumption in vehicles without proper localization via UWB ranging.
Innovation Solution
Disabling the initialization of ranging sessions based on determined user intentions using sensor data, such as LIDAR and camera data, to differentiate between valid and false positive events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UWB ranging sessions are frequently initiated to determine user position, then localization accuracy is improved, but energy consumption increases
Solution Approach 1:
The system performs preliminary actions by using sensors (camera, LIDAR, microphones) to detect user approach and intent before initiating UWB ranging. This preliminary detection allows the system to prepare and only activate energy-intensive UWB communication when truly necessary, thus maintaining localization accuracy while reducing overall energy consumption.
Solution Approach 2:
The patent introduces sensor-based detection (camera, LIDAR, microphones) as an intermediary layer between user presence and UWB ranging initiation. These sensors act as mediators that filter and pre-process information about user intent, allowing the system to make informed decisions about when to activate UWB ranging, thereby balancing localization accuracy with energy efficiency.
2Use of energy by moving object
If ranging sessions are initiated based on sensor data alone, then energy consumption is reduced, but localization reliability deteriorates
Solution Approach 1:
The system merges multiple sensing modalities (camera vision, LIDAR depth sensing, microphone audio detection) with UWB ranging technology into a unified localization system. This combination allows the system to use low-power sensors for initial detection and confirmation, while leveraging UWB's high-precision ranging capability when needed, thus maintaining reliability while reducing energy consumption through selective activation.
Solution Approach 2:
The system implements feedback mechanisms where sensor data continuously monitors user presence and behavior, and this information feeds back into the decision-making process for initiating UWB ranging. The system adjusts its ranging initiation strategy based on accumulated sensor evidence, improving localization reliability over time while maintaining energy efficiency through adaptive triggering.
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
Reduces energy consumption by preventing unnecessary ranging sessions, enhancing user experience through informed disabling and validation of ranging intents.
Implementation Method 1
the user intention may be determined based on sensor data of a LIDAR sensor and/or a camera
Implementation Method 2
the user intention may be determined based on sensor data of a LIDAR sensor and/or a camera
Data Source
AI summary
A method for decreasing an energy consumption of a vehicle includes first receiving sensor data indicative of a usage intent of a user to use the vehicle. Next, the method includes determining, based on the sensor data, a user intention, whether the user intends to use the vehicle. Thereafter, the method further includes disabling, based on the determined user intention, an initialization of a ranging session when no usage intent of the vehicle is determined.