Wireless Tire State Detection Using Ground Reflection Distance
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Solution Overview
Problem
Conventional methods for preventing tire theft require additional hardware, increasing costs, and there is a need for a method to detect abnormal tire states such as deflation or removal without adding hardware, especially to prevent theft before the tire runs out of air or is stolen.
Innovation Solution
A device and method using a wireless transceiver, such as a UWB antenna, to calculate a reference distance between the transceiver and the ground surface, detecting abnormal states by monitoring changes in this distance and determining if the tire is deflated or removed based on threshold values, without requiring additional hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional hardware is used for tire theft prevention, then detection capability is improved, but device complexity and cost increase
Solution Approach 1:
The existing wireless transceiver originally designed for other vehicle functions is made to serve multiple purposes by adding tire monitoring capability. The transceiver uses its existing radio signal transmission and reception functions to detect tire abnormalities through ground reflection analysis, eliminating the need for dedicated theft prevention hardware.
Solution Approach 2:
The vehicle's existing wireless transceiver system serves itself by utilizing its own transmitted radio signals and the reflected waves from the ground to detect tire conditions. The system uses its own operational characteristics (signal delay, reflection patterns) to monitor tire status without requiring external or additional specialized components.
2Measurement precision
If conventional tire monitoring methods are used, then detection accuracy is improved, but additional hardware cost is incurred
Solution Approach 1:
The ground surface acts as an intermediary element in the detection system. The wireless transceiver sends radio signals that reflect off the ground, and the reflected wave characteristics (delay time, signal strength) provide information about the tire's contact with the ground. This intermediary approach enables detection without direct physical sensors on the tire.
Solution Approach 2:
The patent replaces mechanical or electronic sensor-based tire monitoring systems with an electromagnetic wave-based detection method. Instead of using pressure sensors, temperature sensors, or other physical detectors that would require additional hardware, the system uses radio wave transmission and reflection analysis to infer tire status.
3Loss of time
If tire monitoring is performed only when vehicle is occupied, then response time is improved, but detection coverage is reduced
Solution Approach 1:
The system performs preliminary detection actions by continuously monitoring tire status through the wireless transceiver even when the vehicle is unoccupied or the user is away. The transceiver periodically analyzes ground reflection signals to detect tire abnormalities before they become critical or before theft occurs, enabling early warning and prevention.
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
Effectively detects abnormal tire states, including deflation and theft, without additional hardware costs, by using a UWB antenna to monitor reference distance changes and transmit alerts, providing a cost-effective solution for tire security.
Implementation Method 1
the wireless transceiver transmits a radio signal to a ground surface and acquires delay information required to receive a reflected wave from the ground surface
Data Source
AI summary
A device for detecting an abnormal state of a tire includes a wireless transceiver spaced apart from the tire and coupled to a vehicle, where the wireless transceiver transmits a radio signal to a ground surface and acquires delay information required to receive a reflected wave from the ground surface, and a control module that calculates a reference distance between the wireless transceiver and the ground surface based on the delay information, and detects an abnormal state of the tire, based on a reference distance change.