Wrong Way Vehicle Detection Using Doppler Redundancy

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Solution Overview

Problem

Existing wrong way detection systems for motor vehicles are expensive, prone to false alarms, and require excessive maintenance, leading to inadequate implementation and missed opportunities to prevent head-on collisions, which result in catastrophic damage and harm.

Innovation Solution

A system comprising multiple vehicle detectors with overlapping fields of detection and communication networks to accurately identify wrong way vehicles, reducing false alarms through redundancy and synchronized alerts, and utilizing low-power, solar-powered components for cost-effective deployment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If multiple vehicle detectors with overlapping fields of detection are used, then false alarms are reduced and detection accuracy is improved, but device complexity and cost increase

Engineering Contradiction:

Improvewrong way vehicle detection accuracyVSAvoidsystem complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The system divides the detection area into multiple zones using separate detectors (first vehicle detector and second vehicle detector) with overlapping fields of detection. Each detector independently monitors its zone, and the controller reconciles signals from both detectors to confirm wrong-way events, reducing false alarms while maintaining manageable complexity through modular architecture.

Inventive Principle:

Principle #1Segmentation

2Reliability

If expensive detection equipment is deployed, then detection reliability improves, but ease of manufacture and widespread implementation deteriorate

Engineering Contradiction:

Improvedetection system reliabilityVSAvoiddeployment cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The system incorporates solar-powered components that generate their own power, eliminating the need for expensive electrical infrastructure and reducing deployment costs. The detectors and notification devices are designed to be self-sufficient, making the system more economically viable for widespread implementation while maintaining reliable operation.

Inventive Principle:

Principle #25Self-service

3Measurement precision

If excessive maintenance is required to ensure accurate detection, then measurement precision is maintained, but ease of operation and productivity deteriorate

Engineering Contradiction:

Improvedetection accuracyVSAvoidmaintenance burden

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The system includes a controller that reconciles signals from multiple detectors and provides feedback to confirm wrong-way events before triggering notifications. This signal reconciliation mechanism filters out false detections, maintaining high detection accuracy while reducing the need for frequent manual monitoring and maintenance intervention.

Inventive Principle:

Principle #23Feedback

4Loss of information

If long-range network components are added for asynchronous alerts, then information delivery capability improves, but use of energy and device complexity increase

Engineering Contradiction:

Improvealert delivery capabilityVSAvoidenergy consumption

Core Design Contradiction:

Loss of informationVSUse of energy by moving object

Solution Approach 1:

The system uses asynchronous alerting through long-range network components that transmit information when needed rather than maintaining continuous communication. This periodic or event-driven communication approach delivers critical wrong-way alerts reliably while minimizing energy consumption compared to continuous network operation.

Inventive Principle:

Principle #19Periodic action

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 significantly reduces false alarms and enhances the accuracy of wrong way vehicle detection, enabling timely alerts and reducing the risk of head-on collisions, thereby saving lives and resources by providing a cost-effective and reliable solution for widespread implementation.

Implementation Method 1

a first vehicle detector and a second vehicle detector or wrong way detector (WWD), or a doppler detector (DD)

Methodology Applied

Scientific EffectDoppler effect: Doppler Effect

Data Source

PatentUS10089878B2Wrong way alert

Publication Date: 2018.10.02 MDR MFG CORP

AI summary

Methods and systems are described for providing improved detection of a motor vehicle traveling against a designated direction of travel in a roadway. Multiple signals among various system constituents are checked against each other to ensure the lack of a false wrong way indication otherwise possible by use of a single detector. An alert is provided to the wrong way motor vehicle operator and other vehicle operators in the vicinity of detection. A long-range or cellular communication may be broadcast to further provide an alert of a wrong way event and to dispatch emergency personnel to the vicinity.