Magnetic Marker Sensor Self-Diagnosis for Lower Vehicle Upkeep
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Solution Overview
Problem
Conventional magnetic marker systems for vehicles require regular inspection and maintenance, leading to increased upkeep costs due to potential issues with magnetic sensors before and after trouble occurs.
Innovation Solution
A vehicle and vehicular diagnostic system that includes a magnetic detecting part for detecting magnetic markers on the road, a server apparatus to acquire and generate marker state information, and a diagnosing part within each vehicle to self-diagnose the magnetic detecting part using this information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If regular inspection and maintenance are performed on magnetic sensors to avoid troubles, then reliability of the magnetic sensor system is improved, but upkeep cost increases
Solution Approach 1:
Instead of monitoring the magnetic sensor directly for faults, the system inverts the approach by monitoring the magnetic markers themselves. The diagnosing part checks whether magnetic markers are properly detected and positioned, using marker state information to infer sensor health. This indirect monitoring reduces the need for expensive direct sensor maintenance while maintaining system reliability.
Solution Approach 2:
The system implements feedback by continuously acquiring detection information from multiple vehicles, generating marker state information, and using this feedback to diagnose both magnetic marker conditions and magnetic detecting part status. This closed-loop feedback mechanism enables proactive detection of issues before they cause failures, reducing emergency maintenance costs.
2Loss of time
If magnetic sensors are monitored continuously to detect troubles early, then quick handling after trouble occurs is improved, but device complexity increases
Solution Approach 1:
The magnetic detecting part serves multiple functions: it detects magnetic markers for navigation purposes and simultaneously provides diagnostic information about its own health status through the detection patterns. The same hardware infrastructure is used for both primary navigation function and secondary diagnostic function, avoiding the need for separate monitoring equipment and reducing overall system complexity.
Solution Approach 2:
The magnetic detecting part performs self-diagnosis by analyzing its own detection results. The diagnosing part compares expected marker detection patterns with actual detections, and when discrepancies are found, it identifies potential sensor issues without requiring external diagnostic equipment. This self-service capability enables quick fault detection while keeping the diagnostic system simple.
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 reduces inspection and maintenance costs by enabling self-diagnosis of the magnetic detecting part, thereby lowering upkeep costs.
Implementation Method 1
a magnetic detecting part for detecting a magnetic marker disposed in a traveling road of the vehicle
Data Source
AI summary
A vehicle including a magnetic detecting part for detecting a magnetic marker disposed in a road is configured to acquire marker state information indicating the state of the magnetic marker from an external server apparatus via wireless communication and diagnose the state of the magnetic detecting part by using a result of detection of the magnetic marker in which the state of the magnetic marker indicated by the marker state information is good, thereby allowing inspection cost and cost of maintenance of the magnetic detecting part for detecting the magnetic marker to be suppressed.