Rail Vehicle Control Device for Pneumatic and Electrodynamic Braking
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Solution Overview
Problem
Current rail vehicle control systems lack direct driver control over pneumatic and electrodynamic braking systems, requiring central computer intervention for mode selection and transition, which is inadequate for varying train compositions and complex braking scenarios like sawtooth braking.
Innovation Solution
A control device with a single control element that allows manual selection and control of either braking system independently, enabling the driver to choose between pneumatic and electrodynamic braking modes without computer assistance, and allows for simultaneous or sequential control of both systems through integrated selection elements and actuating buttons.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a central computer controls the combination of indirect and dynamic brakes, then automated braking control is achieved, but the driver loses direct control and flexibility for varying train compositions and complex braking scenarios
Solution Approach 1:
The control system is segmented into two independent control paths: one for indirect brake control and one for dynamic brake control. Each brake system can be controlled independently through the single control element, allowing the driver to select and activate only the required braking type without central computer intervention, thus maintaining direct control flexibility while preserving automated control capabilities when needed
2Measurement precision
If the control system requires selection between different braking modes, then braking precision is improved, but operational complexity increases
Solution Approach 1:
The control system merges the control of both indirect and dynamic braking systems into a single control element. The control element can be actuated to control either brake type independently, consolidating what would traditionally require separate controls or mode selections into one unified interface, thereby reducing operational complexity while maintaining precise braking control
Solution Approach 2:
The single control element is designed with universal functionality to control multiple brake types. Through integrated selection elements and actuating buttons, the same control element can selectively activate indirect braking, dynamic braking, or both simultaneously, eliminating the need for separate controls or complex mode selection procedures
3Measurement precision
If separate controls are used for indirect and dynamic brakes, then control precision is improved, but ease of operation deteriorates
Solution Approach 1:
The control system merges the control of both indirect and dynamic braking systems into a single control element. The control element can be actuated to control either brake type independently, consolidating what would traditionally require separate controls or mode selections into one unified interface, thereby reducing operational complexity while maintaining precise braking control
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
Provides the driver with direct and intuitive control over braking and traction forces, allowing for precise management of braking modes and forces without relying on central computers, enhancing operational flexibility and safety, especially in changing train compositions and during complex maneuvers like sawtooth braking.
Implementation Method 1
an electrodynamic (hereinafter referred to as dynamic) brake system. In the dynamic braking system, the braking force is generated by the drive unit or parts of the drive unit
Implementation Method 2
the brake system having at least a first and a second brake system, in particular a pneumatic braking system
Data Source
Figure 1~2
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Figure 4
AI summary
The invention relates to a control device for a railway vehicle, comprising a control unit for controlling a drive unit that is configured to propel the railway vehicle and a control unit for controlling braking equipment of the railway vehicle. The braking equipment has at least one first and one second braking system, in particular a pneumatic braking system and an electrodynamic braking system and the control unit has a control element (1) that can be operated by a person. The control element (1) can be displaced from a neutral position into a first actuating zone, in which the drive unit is controlled by the actuation, in particular the displacement of said control element (1). Said control element (1) can also be displaced from the neutral position into a second actuating zone, in which the braking equipment is controlled by the actuation, in particular the displacement of the control element (1). The control device has a selection element (2) for selecting a first operating mode, in which the first braking system is exclusively controlled by the actuation of the control element (1), and a selection element (3) for selecting a second operating mode, in which the second braking system is exclusively controlled by the actuation of the control element (1).