Aircraft Tire Pressure Loop Link for Wireless Communication
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Solution Overview
Problem
Existing aircraft tire pressure monitoring systems face challenges in reliably communicating between a wheel hub and a tire pressure sensor located on the rim, due to the use of unreliable electrical connections and wires that can break in harsh environments, and require complex, costly solutions to maintain signal integrity.
Innovation Solution
An aircraft tire pressure loop link that uses a rigid metal loop with spaced apart conductive connecting arms to electromagnetically couple a magnetic field between a wheel hub coil and a tire pressure sensor coil, eliminating the need for electrical connections and wires, and utilizing a magnetic flux collector to enhance coupling efficiency without requiring permeable materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transformer coils with wire connections are used to communicate between wheel hub and tire pressure sensor, then electrical connection is established, but the system becomes unreliable and prone to breaking in harsh airplane wheel environment
Solution Approach 1:
The patent replaces the mechanical wire connection system with an electromagnetic field-based communication system. Two coils (primary coil in wheel hub, secondary coil in tire pressure sensor) establish magnetic coupling to transmit power and data without physical wire connections, eliminating the reliability issues of wire breaking in harsh environments.
Solution Approach 2:
The patent introduces a magnetic flux collector as an intermediary component that enhances the magnetic field coupling between the primary and secondary coils. This flux collector focuses and directs magnetic flux from the wheel hub to the tire pressure sensor, improving communication reliability over the six-inch distance without requiring direct wire connections.
2Reliability
If wire connections are used to connect tire pressure sensor to wheel hub, then electrical connection is established, but wires are prone to breaking in harsh environment
Solution Approach 1:
The patent eliminates the mechanical wire connection system entirely, replacing it with wireless electromagnetic communication. The primary coil in the wheel hub and secondary coil in the tire pressure sensor communicate through magnetic field coupling, removing the vulnerability of wires to breaking and simplifying installation.
Solution Approach 2:
The magnetic flux collector serves as an intermediary that enhances wireless magnetic field coupling between the coils, enabling reliable communication over the six-inch distance without requiring physical wire connections, thus improving both reliability and ease of installation.
3Measurement precision
If magnetic flux collector is used to enhance coupling, then signal integrity is improved, but device complexity increases
Solution Approach 1:
The magnetic flux collector is strategically positioned only in the critical magnetic field coupling region between the wheel hub and tire pressure sensor. This localized approach enhances signal integrity where needed most without adding complexity throughout the entire system, maintaining simplicity in non-critical areas.
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
This solution provides a reliable, cost-effective, and simple method for communicating tire pressure data without signal interference, using a non-contact method that can withstand harsh environments and maintain signal integrity over significant distances.
Implementation Method 1
An aircraft tire pressure loop link that uses a rigid metal loop with spaced apart conductive connecting arms to electromagnetically couple a magnetic field between a wheel hub coil and a tire pressure sensor coil
Implementation Method 2
utilizing a magnetic flux collector to enhance coupling efficiency without requiring permeable materials
Data Source
AI summary
The aircraft tire pressure loop link is formed of first and second single metal loops connected by parallel spaced apart metal shafts, and provides for coupling a magnetic field between a wheel hub coil and a tire pressure sensor coil to provide electromagnetic communication between a control unit connect to the wheel hub coil and a tire pressure sensor connected to the tire pressure sensor coil. The current induced in the first single metal loop travels the distance from the edge of the wheel axle coil to the periphery of the of the wheel rim to the second single metal loop, which generates the flux in the tire pressure sensor receiver coil necessary to power the tire pressure sensor.