Vehicle Computer Dynamic Detection Zone Activation
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Solution Overview
Problem
Existing remote vehicle activation systems inaccurately activate welcome functions when the authentication device is positioned between an open vehicle opening element and the passenger compartment, leading to inappropriate function activation.
Innovation Solution
A computer system that determines the opening position of vehicle elements, defines inner and outer detection zones based on the opening position, and activates functions only when the authentication device is within the inner detection zone, ensuring accurate positioning within the passenger compartment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the authentication device is detected in the internal transmission zone when an opening element is open, then welcome functions are activated, but the activation becomes inappropriate when the device is actually outside the passenger compartment
Solution Approach 1:
The detection zone is segmented into multiple zones (first detection zone and second detection zone) based on the opening position of the opening element. The computer determines the opening position and divides the internal transmission zone accordingly, allowing different functions to be activated in different zones, thereby improving activation accuracy without requiring a completely new system.
Solution Approach 2:
The detection zones are made dynamic and adaptable to the opening position of the opening element. As the opening element moves between closed and open positions, the boundaries of the first and second detection zones change accordingly. This dynamic adjustment ensures accurate function activation while using the existing antenna and transmission zone infrastructure.
2Measurement precision
If fixed detection zones are used for antenna positioning, then the system is simple to implement, but it cannot accurately distinguish between device positions when opening elements are in different states
Solution Approach 1:
The detection zones transition from fixed to dynamic boundaries that adapt to the opening position of the opening element. The computer determines the opening position and adjusts the boundaries of the first and second detection zones accordingly, enabling precise device position detection while managing zone configuration through software control rather than additional hardware.
Solution Approach 2:
The system pre-establishes the relationship between opening element positions and detection zone boundaries. The computer is configured to determine the opening position and accordingly define the first and second detection zones within the internal transmission zone, preparing the detection framework in advance rather than requiring real-time complex calculations when a device is detected.
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
Ensures that vehicle functions are activated only when the authentication device is correctly located inside the passenger compartment, eliminating inappropriate activations and allowing for precise function activation without the need for additional sensors to quantify opening positions.
Implementation Method 1
Each antenna is characterized by a transmission zone for transmitting its electromagnetic radiation
Implementation Method 2
the computer 30 of the vehicle measures the strength of the received authentication signal and deduces therefrom the position of the device 40
Data Source
AI summary
A computer for activating at least one function of a motor vehicle from a portable authentication device, the vehicle including: a plurality of opening elements, a plurality of communication modules, each communication module being mounted in an opening element of the vehicle, a fixed reference module, the computer being configured to: determine the opening position of the at least one opening element detected in the open state, determine an inner detection zone, located in the passenger compartment of the vehicle, and an outer detection zone of the antenna, located outside the vehicle, from the determined opening position, calculate the position of the device, and activate at least one function of the vehicle when the authentication device is located in the inner detection zone of said opening element.