Embedded Tire Pressure Sensor Sidewall Integration
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Solution Overview
Problem
Conventional tire-pressure monitoring systems face challenges in durability and environmental exposure, particularly with external sensors, and limited ability to detect simultaneous abnormal conditions across multiple tires.
Innovation Solution
A self-monitoring tire with a tire pressure sensor embedded in the sidewall structure, protected from environmental threats, which includes a pressure sensing chip and wireless transmitting device, allowing for wireless data transmission and potential additional sensing capabilities, such as temperature and gravity sensing, without additional installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an external tire-pressure sensor is installed onto the tire at the gas nozzle cap position, then the installation is easy, but the sensor is exposed to unpredictable environment and subject to damage or malfunction
Solution Approach 1:
The pressure sensor is nested within the tire structure, specifically embedded in the sidewall or mounted on the inner surface of the liner layer. This nesting approach protects the sensor from external environmental threats while maintaining integration with the tire system, resolving the contradiction between easy installation and sensor durability.
Solution Approach 2:
The liner layer serves as an intermediary structure that hosts the pressure sensor. By placing the sensor on the inner surface of the liner layer, the system provides environmental protection while maintaining sensor functionality, thus resolving the contradiction between protection and accessibility.
2Reliability
If an internal tire-pressure sensor is installed into the tire, then the sensor is protected from environmental exposure, but the installation is uneasy and requires extending into space between tire and rim
Solution Approach 1:
The pressure sensor is nested within the tire structure during the tire manufacturing process itself, rather than requiring post-manufacturing installation. The sensor is embedded in the sidewall or mounted on the liner layer, making it an integral part of the tire. This eliminates the need for complex post-installation procedures while maintaining environmental protection.
Solution Approach 2:
The pressure sensor is installed during the tire manufacturing process before the tire is completed and delivered to the user. This preliminary installation ensures the sensor is properly integrated and protected from the start, eliminating the need for complex post-manufacturing installation procedures.
3Measurement precision
If a direct tire-pressure monitoring system is used with sensors on each tire, then individual tire pressure can be detected, but the system complexity increases compared to indirect systems
Solution Approach 1:
The tire structure itself serves multiple functions: it provides structural support, protects the pressure sensor from environmental exposure, and integrates the sensor during manufacturing. This multi-functionality reduces overall system complexity while maintaining precise pressure detection capabilities.
Solution Approach 2:
The pressure monitoring system is merged with the tire structure by embedding the sensor during manufacturing. This combination eliminates separate installation components and reduces system complexity while maintaining accurate individual tire pressure detection for all four tires simultaneously.
Data Source
AI summary
A self-monitoring tire includes a tire body and a tire pressure sensor. The tire body includes a tread rubber for contact with ground, a bead for coupling to a rim, and a sidewall structure including two portions disposed at opposite sides of the tread rubber, and extending from opposite sides of the tread rubber to the bead. The tire pressure sensor is disposed between respective outward surfaces of the two portions of the sidewall structure, and secured on or embedded in either one of the two portions of the sidewall structure.