Tire Pressure Sensor Reprogramming After Roadside Position Changes
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Solution Overview
Problem
Existing tire pressure monitoring systems in trucks face challenges when tire positions are changed on the road, as maintenance services without cabin access cannot update sensor positions due to security restrictions, leading to potential false warnings and safety hazards.
Innovation Solution
A programming method and device that activates pressure sensors, determines their identifiers and positions, and updates their programming remotely, using a database to match current positions with stored identifiers, allowing for reprogramming without direct access to the vehicle's onboard computer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If maintenance services are restricted from accessing the vehicle cabin for security reasons, then vehicle security is improved, but the ability to update sensor positions during tire changes deteriorates
Solution Approach 1:
The patent introduces a portable programming device as an intermediary tool that enables maintenance services to update sensor positions without accessing the vehicle cabin. The device communicates with the onboard computer through external connections (OBD port or wireless), acting as a mediator that bypasses the security restriction while maintaining the update capability.
Solution Approach 2:
The patent replaces the traditional mechanical access method (physical connection to onboard computer requiring cabin access) with alternative communication methods. The portable programming device can establish communication through the OBD port or wireless links, substituting the need for direct cabin access and enabling remote programming operations.
2Use of energy by stationary object
If the onboard computer is turned off during maintenance intervention, then energy consumption is reduced and security is improved, but the ability to communicate and reprogram pressure sensors deteriorates
Solution Approach 1:
The portable programming device is designed to activate pressure sensors and establish communication before the onboard computer is fully powered down or during low-power states. The device can perform preliminary programming operations and sensor activations when the system is in a transitional state, ensuring programming capability is maintained even when the onboard computer is turned off.
Solution Approach 2:
The pressure sensors are designed with self-service capabilities, allowing them to be activated and programmed directly by the portable programming device without requiring the onboard computer to be fully operational. The sensors can store and process programming information locally, enabling updates to occur independently of the main computer's power state.
3Duration of action of stationary object
If tire positions are changed on the road during travel, then tire wear is homogenized and lifetime is extended, but false warnings and safety hazards increase due to outdated sensor position information
Solution Approach 1:
The system implements a feedback mechanism where the portable programming device reads the current position information from the database, compares it with the actual tire positions after switching, and updates the sensor position mappings accordingly. This closed-loop feedback ensures that the tire pressure monitoring system maintains accurate position information even after road-side tire changes, preventing false warnings and maintaining safety.
Solution Approach 2:
The patent introduces dynamic adaptability to the tire pressure monitoring system. The portable programming device enables real-time reconfiguration of sensor position mappings based on actual tire arrangements. This dynamic adjustment capability allows the system to adapt to changing tire positions during road-side maintenance, maintaining monitoring accuracy without requiring full system reinitialization.
Data Source
AI summary
The present invention relates to a programming method for pressure sensors of vehicle tires, comprising:an activation of at least one programmable pressure sensor;a reception of at least one emitted signal;a determination of an identifier of said at least one pressure sensor activated on the basis of said at least one received signal and a determination of its current position in the vehicle;a research in a database of a pair stored identifier-stored position, in which the stored position is the current position of said pressure sensor;a comparison of said identifier with the stored identifier of said pair; andif the comparison is negative, a reprogramming of said at least one pressure sensor with the stored identifier.