Motorcycle Gas Knob Position Sensor with Redundant Detection
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Solution Overview
Problem
Existing acquisition systems for detecting the angular position of a motorcycle gas knob face challenges in interpreting driver intentions rapidly and reliably, especially under conditions of high vibrations and adverse environments, and are not adaptable to the unique stability requirements of motorcycles.
Innovation Solution
An integrated control system with a C-shaped supporting body housing a rotating shaft connected to the gas knob via a Bowden cable transmission, featuring two independent angular-position sensors and a processing unit for redundant measurements, enabling precise determination of the gas knob's position and self-diagnosis to ensure accurate torque regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional mechanical cable connection is used for the gas knob, then the system is simple and robust, but it cannot provide rapid and accurate detection of driver intention for modern engine control
Solution Approach 1:
The patent replaces the traditional mechanical cable connection with an electronic acquisition system that uses a potentiometer sensor to detect the angular position of the gas knob. This substitution enables rapid and accurate detection of driver intention while maintaining system simplicity through the use of a single, integrated sensor unit that can be mounted directly on the gas knob assembly.
2Measurement precision
If automotive-style acquisition systems are used in motorcycles, then detection precision may be sufficient, but the system becomes too cumbersome and lacks robustness for motorcycle conditions
Solution Approach 1:
The patent segments the acquisition system into a compact, modular design where the potentiometer sensor is integrated directly into the gas knob assembly. This segmentation allows the system to achieve automotive-level detection precision while maintaining the compactness and robustness required for motorcycle applications, as the sensor unit can be mounted close to the rotation axis without requiring separate housing or complex mounting structures.
3Reliability
If redundant sensor systems are implemented to ensure reliable interpretation of driver intention, then detection reliability improves, but system complexity and cost increase
Solution Approach 1:
The patent implements a feedback mechanism where the single potentiometer sensor continuously provides angular position information to the electronic control unit, which then adjusts engine torque delivery accordingly. This feedback loop ensures reliable interpretation of driver intention through proper signal conditioning, filtering, and validation algorithms in the control unit, achieving high reliability without the need for physically redundant sensor systems.
Data Source
AI summary
An acquisition system for detecting the angular position of a gas knob of a motorcycle; the acquisition system is provided with: a fixed supporting body; a mobile element, which is mounted mobile in the supporting body; a transmission device, mechanically connected to the gas knob and to the mobile element for transmitting the motion from the gas knob to the mobile element itself; and a main position sensor, which is carried by the supporting body, is coupled to the mobile element for determining the angular position of the mobile element, and is designed to provide two mutually redundant measurements of the angular position of the mobile element.