Tyre Pressure Sensor Housing Layout to Prevent Tread Detachment
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Solution Overview
Problem
Conventional pressure measuring devices for aircraft tires detach due to relative movements during rolling, leading to maintenance issues and safety concerns due to under-inflation detection failures.
Innovation Solution
A pressure measuring device with a center of gravity located below the electronic board, featuring a dual-housing design with fluid channels and a convex outer side surface, which reduces relative movements and includes an antenna wire extending inside the board to maintain attachment to the tire tread.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the pressure measuring device is inserted into a rubber patch adhered to the inner surface of the tyre, then the device can measure pressure without manual intervention, but the rolling of the tyre causes relative movements that deteriorate the patch and cause detachment
Solution Approach 1:
The invention relocates the center of gravity from the electronic board level to a lower position within the housing, creating a vertical dimension offset. This dimensional change in weight distribution generates a stabilizing moment that counteracts the detaching forces during tire rolling, allowing the device to maintain reliable attachment while performing automatic pressure measurement.
2Ease of operation
If the antenna projects laterally from the housing, then radio transmission is enabled, but the antenna may interfere with the attachment to the tyre
Solution Approach 1:
The housing is designed with asymmetric geometry where one side extends further than the other, creating an offset structure. The antenna is positioned within this asymmetric configuration, projecting laterally from the shorter side. This asymmetric design allows the antenna to maintain its radio transmission function while the extended portion of the housing provides sufficient attachment surface area to ensure stable adhesion to the tire.
3Device complexity
If the electronic components are distributed over the same face of the electronic board, then the device structure is simplified, but the center of gravity remains on the electronic board level, causing larger relative movements during rolling
Solution Approach 1:
The invention introduces a vertical dimension offset by positioning the center of gravity below the electronic board level through strategic placement of heavy components in the lower housing. This dimensional relocation of mass creates a stabilizing gravitational moment that reduces the amplitude of relative movements during tire rolling, while the electronic components remain distributed on the same face of the board for structural simplicity.
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 solution effectively limits detachment and maintains accurate pressure measurement by reducing relative movements between the device and the tire, ensuring reliable under-inflation detection and compliance with safety regulations.
Implementation Method 1
an electronic circuit that is distributed on a first face and a second face of an electronic board and that includes a pressure sensor mounted on the first face of the electronic board
Implementation Method 2
The pressure measuring device collects digital data relating to the pressure of the gas contained in the tyre and transmits these data by radioelectric waves to a reader arranged remotely
Data Source
AI summary
A pressure measuring device for a tyre includes an electronic circuit distributed over a first face and a second face of an electronic board and comprising a pressure sensor mounted on the first face of said electronic board; an antenna connected to the electronic circuit; a first housing part covering the first face such that together they delimit a first volume, and comprising channels fluidically connecting the first volume to the outside; a second housing part covering the second face such that together they delimit a second volume, and having a base for resting against an inner surface of a tread of the tyre, the second housing part being arranged such that the antenna projects laterally with respect to said second housing part and the housing has a centre of gravity located in the second volume spaced apart from the electronic board.