Rail Drive Controller with Mode-Switching Multifunction Lever
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Solution Overview
Problem
Rail vehicle operating facilities often require multiple, functionally distinct levers for different modes of operation, leading to complexity, material costs, and maintenance challenges, with some levers becoming temporarily non-functional during mode changes.
Innovation Solution
A multifunctional operating lever that changes its function based on the selected operating mode, allowing it to serve as both a speed selector and a tractive/brake force selector, eliminating the need for separate levers and reducing the number of required operating elements by using a single lever for different functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate operating levers are used for different operating modes, then each lever can be dedicated to a specific function, but the number of operating elements increases and some levers become temporarily functionless
Solution Approach 1:
The patent applies multi-functionality by designing a single operating lever that can perform multiple functions depending on the selected operating mode. The control unit assigns different functions to the operating lever based on the current mode (e.g., speed control in first mode, brake force control in second mode), eliminating the need for separate dedicated levers for each function and resolving the contradiction between reliability and device complexity.
2Adaptability or versatility
If multiple separate operating levers are used for different operating modes, then each lever can maintain its function, but material costs and maintenance outlay increase
Solution Approach 1:
The patent merges multiple operating levers into a single multifunctional operating lever. The control unit combines the control signals from the operating lever with the selected operating mode to determine the appropriate control action. This merging reduces the number of physical components, lowering material costs and maintenance requirements while maintaining full operating mode adaptability through software-based function assignment.
3Extent of automation
If additional operating elements are added for mode switching, then mode changes can be controlled, but the structure and operation of the operating facility become more complex
Solution Approach 1:
The control unit automatically assigns functions to the operating lever based on the detected operating mode, eliminating the need for manual reconfiguration or additional switching elements. The system serves itself by automatically adapting the operating lever's function to the current mode, thereby maintaining operational simplicity while achieving high automation in function assignment.
Data Source
AI summary
A rail vehicle, such as a power car or a locomotive, has a drive and brakes, and a drive controller for controlling the drive and the brakes of the rail vehicle. An operating device for the drive controller has a device for modifying the operating mode of the rail vehicle. The operating device has an operating lever, which can be operated by an operator of the rail vehicle, for operating the drive controller. In order to simplify the operation of the rail vehicle, the function of the operating lever is dependent on the operating mode of the rail vehicle.