Cable Transport Control Device for Vehicle Collision Prevention
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Solution Overview
Problem
Current cable transport installations lack a simple and robust method to control the correct movement of vehicles, particularly in crossing checkpoints, due to complexities in calculating and maintaining safe distances and speeds, leading to potential collisions and operational inefficiencies.
Innovation Solution
A method and device for controlling cable transport installations that detect vehicle entry and exit from routing zones, calculate a variable representative of cable length, and compare it with a threshold to determine successful crossing, using detection and measuring means to emit signals and reset variables, thereby preventing failures and collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex calculation methods are used to determine vehicle separation distances and speeds, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts the essential control function from complex distance and speed calculations by using a simplified counter-based system. Instead of continuously calculating varying distances and speeds, the invention uses discrete counter increments triggered by vehicle detections to track cable length, thereby achieving precise vehicle separation monitoring with minimal computational complexity.
Solution Approach 2:
The patent changes the control parameter from continuous distance and speed measurements to discrete counter values representing cable length. By incrementing the counter by fixed units corresponding to cable length segments between detection points, the system achieves accurate vehicle separation tracking without requiring complex real-time calculations of distance and velocity.
2Reliability
If continuous monitoring of vehicle positions is implemented, then reliability is improved, but use of energy increases
Solution Approach 1:
The patent implements periodic monitoring by triggering counter increments only at discrete events when vehicles are detected by the detection means, rather than continuously monitoring vehicle positions. This event-driven approach maintains reliable collision prevention by tracking cable length at critical moments while significantly reducing energy consumption compared to continuous monitoring systems.
3Reliability
If multiple detection means are installed to monitor vehicle routing, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent makes the detection means multi-functional by using the same detection devices to serve dual purposes: detecting vehicle presence for routing verification and triggering counter increments for cable length measurement. This universal use of detection means achieves reliable vehicle routing monitoring without increasing device complexity, as the same hardware performs multiple control functions.
Data Source
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AI summary
Disclosed is a control device for a cable transport system, the system comprising a vehicle (3) that can be drawn by a cable (2), the device comprising: detection means (17) for detecting an entry of the vehicle (3) into a staging area (15), means (18) for calculating a variable that is representative of a length of unreeling of the cable (2), means (19) for comparing the calculated variable with a threshold, and determination means (20) configured to determine a reception of an event indicating a departure of the vehicle (3) from the staging area (15), the control device being configured to emit a failure signal (Sd) after the calculated variable has reached the threshold and the event is not received.