Bicycle Valve-Mounted Gas Pressure Sensor for Wireless Control
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Solution Overview
Problem
Existing bicycle control systems lack accurate and efficient control of electric components based on tire gas pressure, leading to suboptimal performance and safety issues.
Innovation Solution
A bicycle control device equipped with an electronic controller, a gas pressure detection device, and a wireless communication system that directly attaches to the tire valve, providing real-time gas pressure data for improved control and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the gas pressure detection device is directly attached to the tire valve, then the measurement precision of gas pressure is improved, but the device complexity increases
Solution Approach 1:
The sensor, wireless communication device, and battery are integrated into a single gas pressure detection device that attaches directly to the tire valve, combining multiple functions (detection, communication, power supply) into one compact unit, thereby improving measurement precision while managing device complexity through functional integration
Solution Approach 2:
The gas pressure detection device serves as an intermediary between the tire gas pressure and the electronic controller, directly interfacing with the tire valve to obtain accurate pressure data and wirelessly transmitting it to the controller, thus resolving the contradiction by creating a dedicated measurement interface
2Ease of operation
If the gas pressure detection device includes a battery, then the operability of the detection device is improved, but the weight of the device increases
Solution Approach 1:
The detection device is made self-sufficient by incorporating a battery that powers both the sensor and wireless communication device, enabling the device to operate autonomously without external power sources or complex wiring, thereby improving operability while accepting the necessary weight increase for independent functionality
3Shape
If the wireless communication device is disposed closer to the rim of the tire, then the positioning of the communication device is improved, but the measurement precision of gas pressure may be affected
Solution Approach 1:
The device is positioned radially outward from the tire's rotational axis at an optimized distance, using the radial dimension to achieve both good wireless communication signal reception (by being closer to the rim) and accurate gas pressure measurement (by maintaining appropriate distance from interference sources), thus resolving the positioning contradiction through spatial optimization
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
Enhances the accuracy and operability of gas pressure detection, enabling better control of electric components and overall bicycle performance by providing precise data for assist modes and suspension adjustments.
Implementation Method 1
The sensor detects the gas pressure of the tire
Implementation Method 2
The wireless communication device is configured to perform wireless communication with the electronic controller
Data Source
AI summary
A bicycle control device includes an electronic controller and a gas pressure detection device. The electronic controller receives data indicative of a detected gas pressure of a tire provided to a bicycle. The tire is configured to maintain a gas in a compressed state. The gas pressure detection device is directly attached to a valve of the tire. The gas pressure detection device includes a sensor and a wireless communication device. The sensor detects the gas pressure of the tire. The wireless communication device is configured to perform wireless communication with the electronic controller.