Rail Vehicle Damping Element Monitoring via Inductive Power
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Solution Overview
Problem
Current monitoring technologies for damping elements in rail vehicles are not adequately reliable or long-lasting, requiring frequent maintenance and external power sources, which complicates their installation and operation, especially in non-electrified vehicles and during high-stress conditions like collisions.
Innovation Solution
A self-sustaining monitoring system for rail vehicle damping elements, featuring a sensor to detect changes in distance between sections, a local energy supply, and an inductive generator that converts mechanical energy into electrical energy, allowing for autonomous operation without external power or cable connections, ensuring continuous monitoring over extended periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a monitoring system with external power supply and cable connections is used, then the monitoring function can be provided, but the installation becomes complicated and mechanical weakening of the damping element occurs
Solution Approach 1:
The monitoring system is extracted from the damping element structure, allowing it to be independently installed within the damping element's interior space without requiring external cable connections or power supplies. This separates the monitoring function from the structural integrity requirements of the damping element.
Solution Approach 2:
The monitoring system uses its own local energy supply device (battery) and generates power through the generator using mechanical energy from the damping element's own operation. This self-sustaining approach eliminates dependence on external power sources and simplifies installation.
2Reliability
If a monitoring system with external power supply is used, then the monitoring function can be provided, but mechanical weakening of the damping element due to recesses for cable routing occurs
Solution Approach 1:
The monitoring system components (sensor, data memory, processing unit, energy supply device) are nested within the interior space of the damping element. This utilizes the existing structural space without requiring additional external attachments or cable routing recesses that would compromise the damping element's strength.
3Reliability
If a monitoring system requiring external power supply is used, then the monitoring function can be provided, but the installation becomes more difficult and maintenance requirements increase
Solution Approach 1:
The monitoring system is completely self-sufficient with its local energy supply device and generator that utilizes the damping element's operational movement to generate electricity. This eliminates the need for external power connections, simplifies installation, and reduces maintenance requirements as the system operates autonomously.
4Reliability
If a monitoring system with continuous operation is implemented, then reliable monitoring is achieved, but energy consumption increases requiring larger power sources
Solution Approach 1:
The sensor scans and analyzes damping movements periodically rather than continuously, with the processing unit activated only when changes are detected. This periodic operation mode reduces energy consumption while maintaining reliable monitoring coverage over extended periods.
Solution Approach 2:
The mechanical energy that is naturally dissipated during the damping element's operation is converted into electrical energy through the generator to power the monitoring system. This transforms the energy that would otherwise be lost into a useful resource for sustaining the monitoring 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 system provides reliable, low-maintenance, and energy-efficient monitoring of damping elements, capable of operating during high-stress conditions without disrupting the damping performance, and can function for several weeks or years without external power, facilitating easier installation and reduced maintenance costs.
Implementation Method 1
a sensor (215) attached to the dampening element for sensing a change in a distance between the first section and the second section
Implementation Method 2
the energy supply device includes a generator for the supply of electrical energy based on a relative movement of the sections
Data Source
AI summary
A damping element for a rail vehicle including a first section for fastening to a rail vehicle and a second section for introducing a force acting horizontally upon the rail vehicle. A monitoring system for the dampening element including a sensor attached to the dampening element for sensing a change in a distance between the first section and the second section, a data memory, a processing unit designed to determine information regarding the change in the distance and to store said information in the data memory and a local energy supply device for the autonomous supply of the processing unit.