Vehicle Opening Intention Sensing With Two-Stage Sensor Activation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing intention sensors for motor vehicles consume excessive electricity due to continuous or frequent activation, which is inefficient and not optimized for energy conservation.
Innovation Solution
A two-stage activation system is implemented, where a medium-range detection module and an intention sensor have standby and active states, with control data determining their activation stages, leveraging existing vehicle components like UWB and Bluetooth Low Energy modules to minimize unnecessary energy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the intention sensor is activated continuously or frequently to detect user intention, then the detection reliability is improved, but the electricity consumption increases
Solution Approach 1:
The detection system is segmented into two independent modules: a medium-range detection module that operates intermittently to detect gross motor movements, and an intention sensor that operates only when triggered by the medium-range module. This segmentation allows each module to operate at optimal power levels, with the energy-intensive intention sensor activated only when necessary rather than continuously.
Solution Approach 2:
The medium-range detection module performs preliminary detection of gross motor movements before activating the intention sensor. By detecting preliminary actions such as approaching the vehicle or making preparatory gestures, the system can pre-activate the intention sensor only when relevant, avoiding continuous operation and reducing overall electricity consumption while maintaining detection reliability.
2Use of energy by moving object
If the intention sensor is activated intermittently with predetermined activation period to reduce electricity consumption, then the energy efficiency is improved, but the detection responsiveness deteriorates
Solution Approach 1:
The medium-range detection module continuously monitors for gross motor movements and provides real-time feedback to control the activation state of the intention sensor. When the medium-range module detects a relevant movement, it immediately triggers the intention sensor to activate, ensuring rapid response to user intentions while keeping the sensor in low-power mode during unrelated periods.
Solution Approach 2:
The activation pattern of the intention sensor is made dynamic rather than static. Instead of fixed predetermined intervals, the sensor's activation state changes dynamically based on real-time detection data from the medium-range module. This allows the system to adapt its power consumption and responsiveness to actual usage conditions, maintaining high responsiveness when needed while minimizing energy consumption during idle periods.
Data Source
AI summary
The invention relates to a system (100) that is intended to be integrated into a motor vehicle, and comprising:a medium-range detection module for measuring a current distance relative to a portable user authentication device (200); andan intention sensor for detecting an intention to open and/or unlock an opening panel of the motor vehicle.The medium-range detection module has a standby state and an active state. It is able to receive control data for controlling its standby or active state, and, in response, to switch from its standby state to its active state.The intention sensor has a standby state and an active state. It is able to receive control data for controlling its standby or active state, and, in response, to switch from its standby state to its active state, with said control data depending on a detection carried out by the medium-range detection module.