Traffic Signal State Detection Arbitration
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Solution Overview
Problem
Existing traffic signal state detection systems face challenges in arbitrating between output process parts operated by different infrastructures, leading to potential confusion for drivers when competing demands for traffic signal information are met.
Innovation Solution
A traffic signal state detection apparatus that utilizes both wireless and optical communication to obtain traffic signal information from different infrastructures, calculates remaining times for traffic signal changes, and prioritizes output based on continuous generation of demands, ensuring consistent and accurate information display to drivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traffic signal information is obtained from multiple infrastructures (wireless and optical communication), then the reliability of traffic signal information is improved, but the complexity of arbitrating between competing output demands increases
Solution Approach 1:
The system performs preliminary actions by continuously monitoring which output process part has been continuously generating demands for a longer period, and establishes a priority relationship before conflicts arise. When multiple infrastructures provide traffic signal information, the system has already determined which infrastructure's output demands should be prioritized based on continuous generation time, thus resolving arbitration complexity when information is obtained from multiple infrastructures
2Adaptability or versatility
If multiple output process parts operate based on traffic signal information from different infrastructures, then the adaptability of the system is improved, but driver confusion occurs due to competing output demands
Solution Approach 1:
The system performs preliminary actions by continuously monitoring which output process part has been continuously generating demands for a longer period, and establishes a priority relationship before conflicts arise. When multiple infrastructures provide traffic signal information, the system has already determined which infrastructure's output demands should be prioritized based on continuous generation time, thus resolving arbitration complexity when information is obtained from multiple infrastructures
Solution Approach 2:
The arbitration mechanism acts as an intermediary between multiple output process parts and the driver. It receives output demands from multiple infrastructures, applies arbitration rules based on continuous generation time, and selects a single output demand to present to the driver, thereby preventing driver confusion while maintaining adaptability to different infrastructures
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
The system effectively arbitrates between competing output demands from different infrastructures, providing drivers with reliable and consistent remaining time information, reducing confusion and enhancing driving safety.
Implementation Method 1
a wireless communication apparatus as a first traffic signal information obtaining part configured to obtain first traffic signal information generated by a road side apparatus
Implementation Method 2
an optical communication apparatus as a second traffic signal information obtaining part configured to obtain second traffic signal information generated by a road side apparatus
Data Source
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AI summary
A traffic signal state detection apparatus includes a first traffic signal information obtaining part that obtains first traffic signal information generated by a first infrastructure, a first output process part configured to calculate, based on the first traffic signal information from the first traffic signal information obtaining part, a second traffic signal information obtaining part that obtains second traffic signal information generated by a second infrastructure that is different from the first infrastructure, a second output process part that calculates, based on the second traffic signal information from the second traffic signal information obtaining part, and an output part that outputs one of the first and second remaining times in a situation where the first and second output demands are generated simultaneously, the output remaining time being related to one of the first and second output demands that is being continuously generated before the other is generated.