Infrastructure Radio Wave Sensor for Adaptive Crossing Signals
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Solution Overview
Problem
Existing traffic control systems do not adequately respond to diverse traffic conditions, limiting the ability to provide convenient and efficient traffic management for both road users and vehicles at pedestrian crossings.
Innovation Solution
An infrastructure radio wave sensor that transmits radio waves to a detection area including a pedestrian crossing, receives reflected waves, and outputs messages based on the reception results, including vehicle presence status, number of vehicles, and event occurrence status, to control pedestrian traffic lights effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional traffic control systems are used, then the system structure is simple, but the system cannot respond to diverse traffic conditions and lacks adaptability
Solution Approach 1:
The infrastructure radio wave sensor is designed to perform multiple detection functions using a single device. It can detect vehicle presence status, count vehicles, identify sudden events, and provide this information to control pedestrian traffic lights, thereby achieving diverse traffic condition response through one multi-functional sensor system
Solution Approach 2:
The patent introduces an infrastructure radio wave sensor as an intermediary device between traffic conditions and control systems. The sensor receives radio waves, processes reflected signals to extract traffic information, and outputs messages that can be used by traffic light control systems, thereby enabling adaptive traffic management without directly modifying existing control infrastructure
2Measurement precision
If infrastructure radio wave sensor is deployed, then traffic information detection capability is improved, but system cost and complexity increase
Solution Approach 1:
The patent replaces traditional mechanical or optical traffic detection methods with radio wave-based sensing. The infrastructure radio wave sensor uses electromagnetic wave transmission and reflection principles to detect traffic conditions, eliminating the need for complex mechanical sensors, cameras, or other physical detection devices while achieving comprehensive traffic information gathering
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 enables dynamic control of pedestrian traffic lights in response to various traffic conditions, improving convenience and safety for road users and optimizing traffic flow.
Implementation Method 1
a transmission unit configured to transmit radio waves to a detection area that includes a pedestrian crossing
Implementation Method 2
a reception unit configured to receive reflected waves that are the radio waves reflected from an object
Data Source
AI summary
An infrastructure radio wave sensor includes: a transmission unit configured to transmit radio waves to a detection area that includes a pedestrian crossing; a reception unit configured to receive reflected waves that are the radio waves reflected from an object; and an output unit configured to output a message created based on a reception result of the reflected waves received by the reception unit, wherein the message includes at least one of a vehicle presence status indicating that a vehicle stopped at a stop line, provided on roadway intersecting the pedestrian crossing, is present, a number of vehicles indicating a number of vehicles traveling on the roadway, and an event occurrence status indicating that a sudden event has occurred to a road user on the pedestrian crossing.