Trailer Wheel Side Localization Using Rotation Correspondence
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Solution Overview
Problem
Existing methods struggle to accurately determine the left-or-right side installation position of a trailer wheel without the use of ABS- or ESC-sensors, which are typically not installed on trailers.
Innovation Solution
Utilize an acceleration sensor in the trailer wheel, combined with ABS- or ESC-sensors in the tow vehicle wheels, to compare the number of complete rotations and calculate correspondence values to determine the installation position based on the similarity of rotation patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ABS- or ESP-sensors are used to determine wheel installation position, then localization accuracy is improved, but device complexity increases because trailers typically do not have these sensors installed
Solution Approach 1:
The patent uses the tow vehicle's ABS/ESP sensors as an intermediary to indirectly determine the trailer wheel's installation position. Instead of installing sensors directly on the trailer wheel, the system mediates through the tow vehicle's existing sensors by comparing rotation correspondence between tow vehicle wheels and trailer wheel, thereby achieving localization without adding complexity to the trailer itself
Solution Approach 2:
The patent creates a virtual representation of the trailer wheel's rotation behavior by comparing it with the tow vehicle wheels' rotation data. It copies the localization function from the tow vehicle's sensor system to the trailer wheel context through data correlation, avoiding the need for physical sensor installation on the trailer
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
Provides a reliable and robust method to localize the left-or-right side installation position of a trailer wheel using existing wheel electronics, enhancing the accuracy and reliability of data association with minimal additional hardware.
Implementation Method 1
determining a number of complete rotations of the trailer wheel using an acceleration sensor of the trailer wheel
Implementation Method 2
determining a number of complete rotations of a left side tow vehicle wheel of the tow vehicle using an ABS-sensor or ESP-sensor of the left side tow vehicle wheel
Data Source
AI summary
A method of determining a left or right side installation position of a trailer wheel of a trailer connected to a tow vehicle. A number of rotations of the trailer wheel is determined. A number of rotations of a left side tow vehicle wheel and a right side tow vehicle wheel is determined. A first correspondence value between the number of rotations of the trailer wheel and the number of rotations of the left side tow vehicle wheel is determined. A second correspondence value between the number of rotations of the trailer wheel and the number of rotations of the right side tow vehicle wheel is determined. A left side or right side installation position of the trailer wheel is determined based on the first correspondence value and the second correspondence value.