Vehicle Wheel Sensor Localization via Field Strength
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing tire pressure monitoring systems face challenges in accurately localizing the installation position of vehicle wheels due to desynchronization caused by factors like uneven road conditions and vehicle control algorithms, which hinder the effectiveness of existing localization methods.
Innovation Solution
A method that combines angle comparison using sensors like angle of rotation or revolution rate sensors with field strength measurement to determine the installation position of vehicle wheels, allowing for robust and reliable localization even under conditions where desynchronization occurs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If angle comparison method is used for wheel localization, then localization can be performed using existing sensors, but desynchronization caused by uneven road conditions and vehicle control algorithms reduces localization accuracy
Solution Approach 1:
The patent combines two different localization methods (angle comparison and field strength measurement) into a unified system. The control unit receives both angular position data from existing sensors and field strength measurements, then integrates these data sources to determine wheel installation positions. This merging allows the system to maintain compatibility with existing sensors while compensating for their limitations through the additional field strength measurement modality.
Solution Approach 2:
The patent creates a composite localization approach by combining data from heterogeneous sensor types (angular position sensors and field strength measurement devices). Rather than relying on a single sensing modality, the system processes information from multiple independent sources, creating a more robust and accurate localization solution that leverages the strengths of each sensor type while mitigating their individual weaknesses.
2Measurement precision
If multiple sensing methods are combined for wheel localization, then localization accuracy improves, but system complexity increases
Solution Approach 1:
The control unit is designed to perform multiple functions: it processes angular position data from existing wheel sensors, receives and processes field strength measurements, and determines wheel installation positions based on the integrated data. This multi-functional approach allows the system to achieve improved localization accuracy without requiring completely separate processing systems for each sensing method, thereby limiting the increase in overall system complexity.
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
Enables accurate and reliable automatic localization of vehicle wheels by using field strength measurements to determine the distance of the receiving device from the sensors, improving localization accuracy and robustness across various vehicle operating conditions.
Implementation Method 1
measuring a field strength of a first radio signal and a field strength of a second radio signal by means of a receiving device on the vehicle, wherein a respective measured field strength characterizes a distance of the receiving device on the vehicle from the first sensor on the wheel side and from the second sensor on the wheel side
Data Source
AI summary
The invention relates to a method and an arrangement for locating the installation position of at least two wheels (2a-2d) on a vehicle (1). A first radio signal of a first first sensor (4a) which is mounted on a wheel and a second radio signal of a second first sensor (4b) which is mounted on another wheel of the at least two wheels are received. Furthermore, a first measurement value of a first second sensor, which measures an angular position of a first wheel, is received, and a second measurement value of a second second sensor (5c), which measures an angular position of a second wheel of the at least two wheels, is received. If a first phase position of the first radio signal remains within a specified tolerance range in relation to the first measurement value and a second phase position of the first radio signal remains within a specified tolerance range in relation to the second measurement value, a unique allocation by means of an angular comparison is not possible such that the installation position of the sensors or the paired wheels is located by means of a field strength measurement (FS4a, FS4c) of the first radio signal (S4a) and the second (S4c) radio signal.