Hall Sensor Tether Kill Switch to Prevent False Motorcycle Shutdowns
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Solution Overview
Problem
Existing tether kill switch solutions for electric motorcycles, particularly those using magnetic switches, are unreliable due to moving parts, often resulting in the switch sticking and preventing operation, leading to safety concerns and rider dissatisfaction.
Innovation Solution
A novel tether kill switch system featuring a sensor module with a magnetic substrate, a programmable hall sensor, and a wire harness, which provides robust and intelligent sensing capabilities, allowing for programmable functionality and reducing false shutdowns by using a magnetic key tethered to the rider, enabling advanced control logic and key differentiation for various operational modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a magnetic switch with moving parts is used for the tether kill switch, then the switch can be actuated by the tether key, but the reliability deteriorates due to the switch sticking and preventing operation
Solution Approach 1:
The patent replaces the mechanical magnetic switch with moving parts with a solid-state Hall effect sensor that has no moving parts. The Hall sensor detects the magnetic field from the tether key to actuate the kill switch, eliminating mechanical wear and sticking issues while maintaining operational functionality.
Solution Approach 2:
The invention extracts and eliminates the problematic moving parts from the switch mechanism. By using a tether key with an embedded magnet that interacts with the stationary Hall sensor, the design removes all mechanical moving parts from the switch assembly, preventing sticking and reliability issues.
2Reliability
If a solid-state Hall sensor is used instead of a magnetic switch, then the reliability improves by eliminating moving parts, but the device complexity increases due to programmable functionality requirements
Solution Approach 1:
The Hall sensor system is designed to perform multiple functions: it detects the tether key presence, determines key orientation, and enables different operational modes through programmable logic. This multi-functionality justifies the increased complexity by providing enhanced reliability and additional features in a single integrated system.
Solution Approach 2:
The system uses programmable parameters and thresholds in the Hall sensor to differentiate between various key orientations and positions. By adjusting magnetic field detection thresholds and programming response logic, the system achieves reliable operation across multiple scenarios without requiring separate hardware for each function.
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 solution enhances the reliability and functionality of the kill switch, providing robust control logic and preventing unintended shutdowns, while allowing for programmable key-based operational modes, enhancing safety and performance by mitigating false shutdowns and enabling advanced features like traction control and performance mapping.
Implementation Method 1
a programmable hall sensor coupled to the sensor module, the hall sensor adapted to provide information relating to the key
Data Source
AI summary
A tether kill switch for a motorcycle includes a sensor module and a key. The sensor module is adapted to receive the key and includes a magnetic substrate and at least one sensor. The key is adapted to magnetically couple with the sensor module. A vehicle control system includes a tether kill switch having a sensor module including a magnetic substrate and at least one programmable sensor. A first key and a second key each include at least one unique identifier, wherein the sensor module is adapted to receive either the first key or the second key that are each adapted to magnetically couple with the sensor module. The control system also includes a control unit, wherein the programmable sensor is adapted to identify at least one of the keys by the unique identifier, and send at least one information signal to the control unit based upon the unique identifier.