Radar Detection for Cable Car Pendulum Control
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Solution Overview
Problem
Cable car systems with a single carrying cable face significant pendulum movements at high wind speeds, posing a risk of collisions with station buildings or other vehicles, and existing monitoring methods are inadequate due to topographical and climatic conditions, making it difficult to assess and control the risk of collisions.
Innovation Solution
Deployment of sensors, such as laser scanners or electronic cameras, along the cable car route and at stations to detect the distance and size of pendulum movements of vehicles, allowing for real-time control of the drive system to adjust speed or halt operations based on measured values, thereby mitigating collision risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical monitoring is used to detect pendulum movements, then collision risk can be assessed, but monitoring is not possible due to topographical conditions and poor visibility in climatic conditions
Solution Approach 1:
The patent replaces optical monitoring systems with a radar-based detection system. Radar technology uses electromagnetic waves instead of optical lines of sight, allowing penetration through fog, snow, and complex topography that block visual monitoring. The radar device transmits electromagnetic signals that reflect off vehicles, enabling continuous measurement of pendulum movements regardless of weather conditions or terrain obstacles.
2Reliability
If driving speed is reduced or operation stopped to avoid collisions, then safety is improved, but productivity decreases
Solution Approach 1:
The patent implements a feedback control system where radar continuously measures vehicle pendulum movements in real-time. The control unit receives this data and dynamically adjusts the driving speed based on actual conditions. When pendulum movements are within safe limits, normal speed is maintained for high productivity. When threshold values are exceeded, speed is automatically reduced or operation stopped to prevent collisions, ensuring safety. This closed-loop feedback enables optimal balance between safety and productivity.
3Stability of the object's composition
If two supporting cables are used, then pendulum movements are reduced, but device complexity increases
Solution Approach 1:
The patent introduces a radar detection device as an intermediary between the environmental disturbances (wind, air currents) and the cable car system. Rather than modifying the mechanical support structure, the radar system detects pendulum movements caused by air currents and enables proactive control measures. This intermediary detection approach achieves stability through information feedback rather than through additional mechanical constraints, avoiding the complexity of dual cable systems.
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
Enables precise control of cable car operations independent of visibility conditions, reducing the risk of collisions by accurately detecting and responding to pendulum movements, ensuring safe operation even in challenging aerodynamic conditions.
Implementation Method 1
at least one sensor, in particular a laser scanner or an electronic camera, is assigned to the vehicles moving along the route
Implementation Method 2
at least one sensor, in particular a laser scanner or an electronic camera, is assigned to the vehicles moving along the route
Data Source
Figure 1
AI summary
The ropeway system has two stations, where vehicles are assigned a device along the route of the ropeway system. The device is ascertained to the direction of movement of a vehicle in a transverse manner during the occurrence of an oscillation. Output signals of the device are guided to a control device for driving the ropeway system.