Disc Brake Rotor Assembly with Integrated Sensor Module
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Solution Overview
Problem
Current disc brake systems for small vehicles, such as bicycles, lack effective means to provide riders with real-time feedback on braking performance, making it difficult for them to improve their braking skills.
Innovation Solution
A disc brake rotor assembly equipped with rotor state sensors, including strain gauges and temperature sensors, attached to the hub mounting member to detect braking force and temperature, which transmits information wirelessly to an electric device for improved braking performance analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If disc brake systems are equipped with rotor state sensors to detect braking force and temperature, then riders can receive real-time feedback on braking performance, but the device complexity increases
Solution Approach 1:
The patent combines multiple sensor functions (strain detection and temperature detection) into a single integrated sensor module that is mounted on the hub mounting member. This merging approach provides comprehensive braking performance feedback while minimizing the increase in device complexity by using a unified sensor unit rather than separate sensors.
Solution Approach 2:
The hub mounting member serves as an intermediary structure that both mechanically connects the rotor to the hub and provides a mounting platform for the sensor module. This dual-function design allows the sensors to be positioned optimally for detecting braking force through strain measurements while being thermally coupled to detect temperature changes.
2Measurement precision
If strain gauges are attached to the hub mounting member to detect braking force, then measurement precision improves, but the manufacturing complexity increases
Solution Approach 1:
The sensor module is designed as a pre-assembled unit with strain gauges and temperature sensors already mounted and configured on the hub mounting member. This preliminary assembly allows for precise sensor placement and calibration to be performed during manufacturing, ensuring measurement precision while simplifying the overall manufacturing process by reducing the number of separate assembly steps required.
3Measurement precision
If temperature sensors are added to detect the effect of frictional heat on strain gauges, then measurement precision improves, but the device complexity increases
Solution Approach 1:
The temperature sensor is integrated into the same sensor module as the strain gauges, allowing both measurements to be taken simultaneously from the same location on the hub mounting member. This merged design enables temperature compensation of strain measurements without requiring separate sensor assemblies, thereby improving measurement precision while minimizing the increase in device 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
The system enables riders to receive real-time feedback on braking force and performance, enhancing their ability to apply brakes effectively and safely.
Implementation Method 1
the at least one rotor state sensor includes a strain gauge to detect a strain of the hub mounting member
Implementation Method 2
the at least one rotor state sensor includes a temperature sensor to detect a temperature of the strain gauge
Data Source
AI summary
A disc brake rotor assembly for a small vehicle including a bicycle comprises a disc brake rotor and at least one rotor state sensor to detect a state of the disc brake rotor.