System-on-Chip On-Board Device for Electronic Toll Collection
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Solution Overview
Problem
Existing electronic fee collection systems for toll roads are often bulky, energy-intensive, and costly, with separate units for application processing and positioning, which can compromise safety and data security, particularly in vehicles where space and energy efficiency are critical.
Innovation Solution
Integration of an application processor and positioning unit into a single system-on-chip, combined with a cryptographic unit for data security and a minimalistic communication unit, reducing hardware requirements and energy consumption while ensuring secure data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate units for application processing and positioning are used, then functional reliability is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent combines the application processor and positioning unit into a single integrated chip, eliminating the need for separate physical units. This integration maintains all necessary functions while reducing device complexity, space requirements, and inter-component communication overhead, directly resolving the contradiction between functional reliability and device complexity.
2Reliability
If separate units for application processing and positioning are used, then functional reliability is improved, but energy consumption increases
Solution Approach 1:
By integrating the application processor and positioning unit on a single chip, the patent eliminates energy-consuming inter-component communication and reduces overall power requirements. The unified architecture allows for more efficient energy management while maintaining full functional capability, resolving the contradiction between reliability and energy consumption.
3Device complexity
If integrated system-on-chip is used, then device size and cost are reduced, but data security requirements become more critical
Solution Approach 1:
The patent introduces a cryptographic unit as an intermediary component within the integrated chip, specifically designed to handle security-sensitive operations. This dedicated security module protects toll collection data and communication channels while allowing the rest of the integrated system to benefit from reduced complexity and cost, effectively resolving the contradiction between integration benefits and security requirements.
Data Source
Figure 1
Figure 2~3
AI summary
An on-board device for an electronic fee collection system for vehicles, comprising a positioning unit and an application processor, wherein the application processor and the positioning unit are integrated in one single chip as a system on chip.