Electric Bicycle Push-Assist Speed Synchronization
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Solution Overview
Problem
Existing electric bicycle control systems in push-assist mode often require frequent activation and deactivation of the motor to synchronize user walking speed and bicycle speed, leading to physical effort and increased collision risk, especially in group trips and bottlenecks.
Innovation Solution
A control method that detects activation of the pushing aid, user walking speed, and nearby vehicle speeds to adapt the electric bicycle's speed, using sensors and cameras to adjust the motor's operation, allowing the bicycle to synchronize with user and external vehicle speeds without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the pushing aid is repeatedly switched on and off to avoid collisions and adjust speed, then the ego speed of the electric bicycle can be adjusted, but the user experience deteriorates due to frequent activation/deactivation and increased collision risk
Solution Approach 1:
The control device automatically detects the user's pushing speed and externally detected speeds (e.g., from other vehicles or pedestrians) and autonomously adjusts the motor support to maintain appropriate speed differences, eliminating the need for the user to manually switch the pushing aid on and off
Solution Approach 2:
The system continuously monitors the user's pushing speed and externally detected speeds, using this feedback to dynamically adjust the motor support and maintain a safe and comfortable speed difference between the electric bicycle and surrounding objects
2Speed
If the pushing aid is kept continuously activated to maintain speed, then speed synchronization is improved, but energy consumption increases due to unnecessary motor activation
Solution Approach 1:
The motor support is dynamically adjusted based on real-time detection of user pushing speed and externally detected speeds, activating motor support only when the speed difference exceeds a predefined threshold, rather than maintaining continuous activation
Solution Approach 2:
The system changes the operational parameters of the motor support based on detected speed conditions, adjusting the level and timing of motor assistance to match actual user needs and external environment
Data Source
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AI summary
A control procedure for adapting the driving behavior of an electric bicycle (100) when pushing the electric bicycle (100), comprising at least the following steps: detection (410) of an activation of a push-assist mode of the electric bicycle (100) by a user; detection (420) of an ego speed (vego) of the electric bicycle (100); determination (470) of an external speed (vfremd) of the user (200) and/or at least of an external vehicle (300); and control (490) of an electric motor (104) of the electric bicycle (100) depending on the detected activation of the push-assist mode, the detected ego speed (vego) and the determined external speed (vfremd) to adapt the ego speed (vego) and/or an acceleration (a) of the electric bicycle (100).