Indirect TPMS Verification Using Motorized Roller Simulation
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Solution Overview
Problem
Existing indirect Tire Pressure Monitoring Systems (TPMS) require deflation of wheels and driving on roads to detect anomalies, which is inconvenient and not feasible for all scenarios.
Innovation Solution
A method and unit that checks and verifies the indirect TPMS system by inflating wheels to a predetermined pressure and using motorized rollers to simulate different wheel speeds, allowing for off-road testing without deflation, utilizing a testing unit with motorized rollers to activate and verify the system's functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If indirect TPMS testing is performed using conventional methods, then the system can detect tire pressure anomalies, but the testing requires deflating wheels and driving on roads which is inconvenient and not feasible for all scenarios
Solution Approach 1:
The patent introduces an intermediary testing system consisting of motorized rollers that simulate road conditions in a controlled environment. This intermediary setup allows TPMS verification without requiring actual road testing or wheel deflation, thus improving ease of operation while maintaining testing effectiveness.
Solution Approach 2:
The testing procedure performs preliminary actions by pre-deflating specific tires before placing the vehicle on the roller system. This allows the system to verify TPMS functionality in advance under controlled conditions, eliminating the need for complex road testing procedures and making the process more convenient and feasible for all scenarios.
2Reliability
If wheel deflation is used to test indirect TPMS, then the system can verify anomaly detection, but the process becomes time-consuming and requires road driving
Solution Approach 1:
The patent replaces the mechanical system of actual road driving with a controlled roller-based mechanical system. The motorized rollers simulate wheel rotation and vehicle movement, allowing TPMS verification to be performed rapidly in a stationary position. This substitution maintains verification reliability while dramatically reducing testing time and eliminating the need for road driving.
3Measurement precision
If direct TPMS with pressure sensors is used, then accurate pressure detection is achieved, but additional hardware and software components are required inside and outside the wheels
Solution Approach 1:
The patent creates a controlled copy of road testing conditions using motorized rollers that simulate wheel rotation. This copying approach allows the indirect TPMS system to be verified without requiring the additional hardware and software components of direct TPMS systems. The roller system replicates the necessary mechanical conditions for accurate anomaly detection using only the existing ABS wheel speed sensors.
Data Source
Figure 1~2
AI summary
The present invention relates to a method for testing or verifying the indirect pressure monitoring system of the wheels (TW) of a vehicle (V).