Wireless Drive Position Exchange for Shading Device Collision Avoidance
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Solution Overview
Problem
Existing shading device drive systems require complex wiring and central control setups, leading to increased costs, space requirements, and limitations in assembly and adjustment, as well as difficulties in compensating for site tolerances and preventing collisions between driven elements.
Innovation Solution
A device with internal position detectors and wireless communication between drives, allowing each drive to transmit its position to the other, enabling an evaluation and control unit to limit travel paths and prevent collisions, eliminating the need for a central controller and allowing for bidirectional position exchange and customization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a central control system with wiring to all drives and limit switches is used, then collision avoidance can be achieved, but device complexity and assembly costs increase
Solution Approach 1:
The patent divides the control system into independent segments where each drive unit has its own evaluation and control unit. This eliminates the need for a centralized control system while maintaining collision avoidance functionality. Each drive unit independently monitors positions and communicates with neighboring drives through wireless communication, distributing the control intelligence across multiple autonomous nodes.
Solution Approach 2:
The patent introduces wireless communication as an intermediary between drive units, replacing the physical wiring infrastructure. This allows position information to be exchanged without direct electrical connections to a central controller, simplifying the overall system architecture while maintaining reliable data transmission for collision prevention.
2Measurement precision
If a central control system with extensive wiring is implemented, then position monitoring is possible, but assembly time and space requirements increase
Solution Approach 1:
The patent extracts the control functionality from the central system and embeds it directly within each drive unit. This integration eliminates the need for extensive wiring to connect drives to a central controller, significantly reducing assembly time and the space required for cable management while preserving precise position detection capabilities through internal sensors and wireless communication.
3Reliability
If precise adjustment during assembly is required, then collision prevention is achieved, but adaptability to site tolerances is reduced
Solution Approach 1:
The patent implements dynamic adjustment capabilities where the evaluation and control units can adapt limit positions and safety zones based on actual site conditions and tolerances. The system allows for flexible reconfiguration of adjustment parameters without requiring precise initial assembly, enabling adaptation to various installation environments while maintaining reliable collision prevention through continuous position monitoring and wireless communication.
Data Source
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Figure 3~4
AI summary
A device serves to limit the travel of at least one of two or more drives (18, 20), at least one of which drives a shading device, wherein the two drives (18, 20) drive elements or degrees of freedom of elements whose travels overlap, and means for detecting and limiting the travel of at least one of the drives (18, 20) are provided, which prevent an element from being moved into a position in which another element is already located. To reduce the effort with regard to integration into a shading device and, if necessary,To simplify further functionally related drives (18, 20), it is provided that at least one of the drives (18, 20) has an internal position detection (24, 26) and a communication link (36) is provided between the drives (18, 20) which wirelessly transmits the detected position to the other drive (18, 20), wherein an evaluation and control unit (10, 11) assigned to this drive (18, 20) limits the travel of this drive (18, 20) in such a way that a collision with the other element is prevented.