Wheel Information Transfer Apparatus for Parallel Serial Data
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Solution Overview
Problem
Existing wheel rotation speed sensors in utility vehicles cannot efficiently transfer additional information such as temperature and serial numbers, which are necessary for advanced autonomous driving functions, due to limitations in the AK protocol used in passenger vehicles.
Innovation Solution
A wheel information transfer apparatus that uses an active rotation speed sensor to transfer wheel-related information both in parallel and serially, allowing for the transmission of additional data beyond the standard AK protocol, including temperature and serial numbers, by utilizing a magnetic encoder disk and reader head to generate rotation speed pulses and incorporating serial data transfer protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the AK protocol is used for information transfer in wheel rotation speed sensors, then compatibility with existing evaluation circuits is maintained, but the quantity of additional information that can be transferred is insufficient for utility vehicle demands
Solution Approach 1:
The information transfer is divided into two independent channels: a parallel channel using the existing AK protocol for basic wheel information (rotation speed, direction, air gap), and a serial channel for additional information (temperature, serial number, plausibility data). This segmentation allows each channel to operate independently with its own protocol requirements, enabling expanded information transfer without compromising existing system compatibility.
Solution Approach 2:
The wheel rotation speed sensor is designed to perform multiple functions: it continues to provide standard AK protocol information for anti-lock braking systems while simultaneously transferring utility vehicle-specific information through the serial channel. This multi-functionality enables a single sensor to serve both passenger vehicle and utility vehicle requirements without requiring separate systems.
2Quantity of substance
If a new protocol is implemented to transfer additional wheel information, then the quantity of transferable information increases, but replacement of all existing evaluation circuits is required
Solution Approach 1:
The serial communication channel acts as an intermediary layer that adds information transfer capability without interfering with the existing parallel AK protocol channel. The evaluation circuit processes AK protocol information through its established pathways while the serial channel provides additional information streams that can be processed independently or integrated as needed, avoiding the need to redesign the entire evaluation system.
Solution Approach 2:
The information transfer system is designed to be dynamically adaptable: the serial channel can be activated or deactivated based on the capabilities of the evaluation circuit, allowing gradual system evolution. Existing circuits can continue operating with only AK protocol support, while upgraded circuits can leverage both parallel and serial channels for enhanced functionality.
3Quantity of substance
If serial data transfer is added within parallel data transfer, then the quantity and variety of information increases, but the device complexity increases
Solution Approach 1:
The dual-channel architecture segments information transfer into distinct parallel and serial pathways, each with dedicated processing logic. This segmentation isolates the complexity of serial communication from the established parallel AK protocol processing, allowing each channel to be optimized and maintained independently while working together to provide comprehensive information transfer.
Data Source
AI summary
A wheel information transfer apparatus, including: an information detection apparatus to detect and store wheel-related information; and an information transfer apparatus to transfer the wheel-related information over a transfer medium; in which the information transfer apparatus is configured to transfer at least a first portion of the wheel-related information parallel or quasi-parallel, and in which the information transfer apparatus is configured to transfer the at least first portion of the wheel-related information or a second portion of the wheel-related information serially within the parallel or quasi-parallel data transfer. Also described are a wheel information transfer method and a related vehicle.