Driver-Assist System Route Deviation Data Handling
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Solution Overview
Problem
Driver-assist systems in motor vehicles face reduced accuracy or inoperability when a driver intervenes and deviates from a predetermined route, as they lack immediate access to driving-environment data, leading to reduced functionality or complete failure in such scenarios.
Innovation Solution
A method that determines a route and provides driving-environment data along the route, including an initial section of a road that deviates from the planned route, ensuring continuous data availability by subdividing the route into sections and downloading data only when necessary, thereby maintaining system accuracy and allowing driver intervention without compromising performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If driving-environment data is provided only for the predetermined route, then data transmission volume is reduced, but the driver-assist system loses accuracy when the driver deviates from the route
Solution Approach 1:
The system pre-provides driving-environment data for an initial section of alternative roads before the vehicle actually deviates from the predetermined route. This preliminary action ensures that when the driver does deviate, the driver-assist system immediately has access to relevant data without experiencing a data gap, thus maintaining system accuracy while limiting data transmission to only what is initially needed.
Solution Approach 2:
The system segments the alternative route data into an initial section and subsequent sections. Only the initial section is pre-downloaded and stored locally, while subsequent sections are fetched on-demand when actually needed. This segmentation reduces the initial data transmission volume while ensuring continuous data availability through on-demand loading of additional segments.
2Reliability
If driving-environment data is downloaded for multiple alternative routes, then data availability upon route deviation is improved, but transmission time and operating costs increase
Solution Approach 1:
The system applies partial action by downloading only the initial section of alternative route data rather than complete data for all possible alternative routes. This partial download provides sufficient data to maintain driver-assist functionality immediately upon deviation, avoiding the excessive transmission time and costs that would result from downloading comprehensive data for multiple full alternative routes.
3Ease of operation
If the driver can intervene and leave the predetermined route, then driver control is maintained, but the driver-assist system experiences reduced accuracy due to lack of immediate data
Solution Approach 1:
The system prepares driving-environment data for the initial section of alternative roads in advance, before the driver actually intervenes and deviates from the predetermined route. This preliminary preparation ensures that when the driver exercises their right to intervene and change route, the driver-assist system maintains full accuracy immediately without any data gap or delay.
Data Source
AI summary
A method for providing driving-environment data for a driver-assist system on board a motor vehicle includes determining a route to be traveled; providing driving-environment data along the determined route, driving-environment data along an initial section of a road deviating from the route additionally being provided; determining that the motor vehicle is traveling on the road; determining a new route that includes the traveled road; and providing driving-environment data along the new route.