Redundant Safety System for Aerial Camera Cables
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Solution Overview
Problem
Aerial cable systems used for moving cameras in two or three dimensions lack a reliable safety mechanism to prevent the camera from hitting the ground in case of a cable break, posing a hazard to people and property.
Innovation Solution
A redundant safety system with a block and tackle mechanism that activates when the main cable fails, maintaining tension on a safety line to prevent the camera from falling, using a braking system triggered by sensors to lock the capstan winch and prevent further movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single cable system is used to move the camera, then the device complexity is reduced, but the reliability decreases because there is no safety mechanism to prevent the camera from hitting the ground in case of cable break
Solution Approach 1:
The patent implements a safety cable system with block and tackle mechanisms that are pre-configured to activate automatically when the main cable fails. This beforehand cushioning ensures that if the primary cable breaks, the safety cable system immediately engages to prevent the camera from falling, thus resolving the contradiction by prioritizing reliability through pre-established protective measures.
Solution Approach 2:
The cable system is segmented into distinct functional components: the main cable for normal operation and the safety cable system with separate block and tackle mechanisms for emergency protection. This segmentation allows the system to maintain simplicity for primary function while incorporating reliability measures that only activate when needed, addressing both the reliability improvement and complexity concern.
2Reliability
If a redundant safety system with block and tackle mechanism is added, then the reliability improves by preventing camera fall, but the device complexity increases
Solution Approach 1:
The safety system employs dynamic block and tackle mechanisms that remain inactive during normal operation and automatically engage only when the main cable fails. This dynamic characteristic allows the system to provide reliable safety backup while maintaining operational simplicity, as the complex safety mechanisms only become active when needed, thus resolving the contradiction between reliability improvement and complexity increase.
Solution Approach 2:
The safety cable system is designed to activate automatically through the mechanical advantage of the block and tackle mechanisms when the main cable breaks, without requiring external intervention or complex control systems. The system serves itself by utilizing the force of the falling camera to trigger the safety mechanism, thereby improving reliability while minimizing the addition of complex control infrastructure.
3Reliability
If the safety line is kept taut to prevent camera fall, then the reliability improves, but the ease of operation decreases due to constant tension requirements
Solution Approach 1:
The safety line operates in a periodic manner, remaining slack during normal camera operation and only becoming taut when the main cable fails. This periodic action eliminates the need for constant tension maintenance, improving ease of operation while maintaining reliability through automatic engagement of the safety mechanism when needed. The block and tackle mechanisms provide the necessary tension only during emergency conditions.
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
Ensures the camera remains suspended and safe by activating a redundant safety line and braking system in case of a cable break, reducing the risk of injury and damage, and allowing for efficient retraction and expansion of the safety line.
Implementation Method 1
A redundant safety system with a block and tackle mechanism that activates when the main cable fails, maintaining tension on a safety line to prevent the camera from falling
Implementation Method 2
using a braking system triggered by sensors to lock the capstan winch and prevent further movement
Data Source
AI summary
A safety system and method for objects moved by a driving cabling system. Offers a redundant back-up system that activates when the main cable system fails. The safety system has various embodiments and may be utilized with camera movement systems configured to move the camera throughout two or three-dimensional space.