Tire Sensor Assembly for Direct Tire Temperature Detection

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Solution Overview

Problem

Conventional tire sensors cannot measure the temperature of the tire itself, only the air chamber inside the tire.

Innovation Solution

A sensor for tires that includes a base portion fixed to the inner side of the tire and a tire temperature detection unit to directly measure the tire's temperature.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If temperature sensors are placed inside the tire air chamber to measure air temperature, then the tire air chamber temperature can be measured, but the tire itself temperature cannot be measured

Engineering Contradiction:

Improvetemperature measurement capabilityVSAvoidmeasurement target scope

Core Design Contradiction:

Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The sensor system is divided into separate functional components: a base portion that contacts the tire to measure tire temperature, and a housing portion that contains electronic components. This segmentation allows independent optimization of temperature measurement capability while maintaining other sensor functions.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The base portion acts as an intermediary element between the tire and the temperature detection unit. It provides direct thermal contact with the tire while being thermally coupled to the temperature sensor in the housing, enabling indirect measurement of tire temperature without placing electronics inside the tire air chamber.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If a base portion is added to contact the tire for temperature detection, then tire temperature can be measured, but device complexity increases

Engineering Contradiction:

Improvetire temperature detection accuracyVSAvoidsensor structure complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The base portion and housing portion are merged into a unified sensor assembly where the base serves dual purposes: as a mounting surface for the housing and as a thermal interface for temperature detection. This merging reduces overall structural complexity compared to separate components.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The base portion is designed with multi-functionality: it provides mechanical support for mounting the sensor to the tire, serves as a thermal conduction path for temperature detection, and offers a bonding surface for adhesive attachment. This multi-functionality eliminates the need for separate components, reducing device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Accurately measures the tire's temperature, improving detection accuracy and enabling precise correction of rolling resistance coefficients.

Implementation Method 1

a tire temperature detection unit configured to detect a temperature of the tire through the base portion

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS12558929B2Sensor for tires

Publication Date: 2026.02.24 ASTEMO LTD

AI summary

The present disclosure provides a sensor for tires capable of measuring a physical quantity including a temperature of a tire. An aspect of the present disclosure is a sensor for tires including: a base portion 5 fixed to an inside of a tire T and in contact with the tire T, and a sensor chip 7 including a tire temperature detection unit that detects the temperature of the tire T through the base portion 5.