Vehicle Device Toll Detection Memory Management
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Solution Overview
Problem
Vehicle devices used in toll systems lack sufficient memory space to store detection objects for both primary and secondary road sections, preventing them from accurately detecting vehicle travel on these sections.
Innovation Solution
The method involves storing primary detection objects decentralily in vehicle devices and secondary detection objects centrally, allowing vehicle positions to be temporarily stored in the device for correlation with secondary recognition objects, optimizing memory usage by limiting storage to only necessary data for secondary route section detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If all secondary detection objects are stored in the vehicle device, then detection accuracy for secondary road sections is improved, but memory space requirements exceed available capacity
Solution Approach 1:
The patent divides detection objects into two segments: primary detection objects stored in the vehicle device and secondary detection objects stored in the central server. This segmentation allows the vehicle device to operate within its memory constraints while still enabling detection of both primary and secondary road sections through coordinated processing between the vehicle device and central server.
Solution Approach 2:
The patent introduces communication means as an intermediary between the vehicle device and central server. This intermediary enables the transfer of detection data and results between the two systems, allowing the vehicle device to access secondary detection objects remotely without storing them locally, thus resolving the memory space constraint.
2Quantity of substance
If secondary detection objects are stored centrally in the server, then memory space in vehicle devices is reduced, but detection process complexity increases
Solution Approach 1:
The patent makes the central server serve multiple functions: it stores both primary and secondary detection objects, processes detection results, and communicates with multiple vehicle devices. This multi-functionality consolidates complexity in the central server while keeping the vehicle device simple, as the server handles the additional processing requirements for secondary road section detection.
3Measurement precision
If vehicle positions are temporarily stored for secondary comparison, then detection capability for secondary road sections is improved, but temporary storage requirements increase
Solution Approach 1:
The patent implements partial storage of vehicle positions - only those positions that cannot be correlated with primary detection objects are stored temporarily for secondary comparison. This partial action approach stores only the necessary subset of data needed for secondary road section detection, minimizing temporary storage requirements while maintaining detection capability.
Data Source
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AI summary
To detect when a vehicle travels on primary and secondary road sections within a detection area, a method and a vehicle device are proposed in which primary detection objects of primary road sections are stored decentrally in the vehicle device and secondary detection objects are stored centrally in a central data processing device, whereby vehicle positions for which the vehicle device could not establish a spatial correlation with a primary detection object are stored in the vehicle device before being checked for a spatial correlation with one of the centrally provided secondary detection objects.