Compact Metal Body Tyre Pressure Sensor for Small Rims
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Solution Overview
Problem
Current pressure monitoring devices for two- or three-wheeled vehicles are adaptations of passenger vehicle devices, which are too large for smaller rim dimensions, making them impractical for use on motorcycles and similar vehicles due to the size of the plastic housings, preventing effective pressure monitoring.
Innovation Solution
A compact measurement system with an electrically conductive metal body that serves as a receptacle for the measurement devices, allowing stable positioning and mechanical protection, while enabling wireless transmission of measurement values through a cover made of material transparent to electromagnetic waves, reducing component count and manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a plastic housing is used for the pressure sensor, then the device can be manufactured, but the size becomes too large for small rim dimensions
Solution Approach 1:
The patent merges the housing structure with the rim by integrating the pressure sensor device into the rim itself. The rim serves dual functions as both the wheel component and the housing for the pressure sensor, eliminating the need for a separate plastic housing and reducing overall device size to fit small rim dimensions.
Solution Approach 2:
The rim is designed to perform multiple functions: it serves as the structural wheel component and simultaneously as the housing for the pressure sensor. This multi-functionality reduces the number of separate components needed, allowing the device to fit within small rim dimensions while maintaining manufacturability.
2Strength
If a metal body is used for the measurement system, then mechanical protection and structural stability are improved, but wireless transmission is attenuated
Solution Approach 1:
The patent introduces an intermediary component - an electromagnetic wave-transparent material - that allows wireless signals to pass through the metal housing without significant attenuation. This intermediary layer resolves the conflict between the need for strong mechanical protection from the metal body and the requirement for reliable wireless transmission.
3Volume of moving object
If the measurement system is made compact, then it can fit on small rims, but component integration becomes more difficult
Solution Approach 1:
The patent combines multiple components (pressure sensor, housing, and mounting structure) into a single integrated unit that is directly mounted on the rim. This merging of components reduces the overall device size to fit compact spaces while simplifying integration by eliminating the need for separate mounting brackets or additional structural elements.
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 effectively transmits measurement values without significant attenuation, even with a metallic body, providing robustness and compactness, enabling pressure monitoring on small rims with reduced manufacturing costs.
Implementation Method 1
a cover (5) made of material transparent to the waves of the wireless transmission device allowing the body to be used as a receptacle allowing the stable positioning, the transmission of electrical energy and the mechanical protection of the devices of the measurement system while allowing the wireless transmission through the cover of values representative of the measurements obtained by the detection device
Data Source
Figure 1~2
AI summary
The invention relates to a measurement system (1) for measuring at least one physical characteristic for a tyre assembly (21) comprising a device (9) for detecting the physical characteristic, a wireless transmission device (11) for the wireless transmission of values representative of the measurements obtained by the detection device (9) and a non-return fluid passage device (13) allowing the tyre assembly (21) to be inflated and an electrical power source (15). According to the invention, the measurement system (1) comprises an electrically conductive metal body (3) closed by a cover (5) made from a material transparent to the waves of the wireless transmission device (11) allowing the body (3) to be used as a receptacle for stable positioning, electrical power transmission and mechanical protection of the devices (9, 11) of the measurement system (1) while allowing the wireless transmission, through the cover (5), of values representative of the measurements obtained by the detection device (9).