Pneumatic Sensing Edge Wireless Power via Magnetic Coupling
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Solution Overview
Problem
Current pneumatic sensing edge safety devices for motorized doors require battery replacement due to the elimination of mains electricity power after removing the cable connection, leading to inconvenience and maintenance issues.
Innovation Solution
A safety device with a radio transmitter powered by magnetic energy transfer using a rechargeable battery, where a magnetic field generator and receiver enable continuous charging when the door is closed, eliminating the need for battery replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cable connection is eliminated to simplify installation and eliminate positioning restrictions, then ease of installation and positioning flexibility are improved, but mains electricity power cannot be provided to the pneumatic sensing edge
Solution Approach 1:
The patent introduces a cableless power transmission system using magnetic coupling as an intermediary between the fixed control unit and the moving door. The control unit generates a magnetic field that couples with a receiver on the door, transferring electrical energy without physical cable connection, thus maintaining both cableless installation flexibility and mains power capability
Solution Approach 2:
The patent replaces the mechanical cable connection system with an electromagnetic field-based power transmission system. By using magnetic coupling instead of physical cables, the system eliminates mechanical constraints while maintaining electrical energy transfer, enabling both ease of installation and continuous mains power supply
2Ease of operation
If battery-powered transmitter is used after cable elimination, then installation flexibility is improved, but periodic battery replacement is required
Solution Approach 1:
The patent implements continuous charging of the battery in the pneumatic sensing edge by maintaining constant magnetic coupling with the control unit. The magnetic field continuously transfers energy to keep the battery charged, ensuring uninterrupted operation without periodic battery replacement while maintaining cableless installation flexibility
Solution Approach 2:
The system enables the pneumatic sensing edge to self-charge continuously through magnetic coupling with the control unit. The battery is automatically recharged during door operation without external intervention, eliminating the need for manual battery replacement and ensuring continuous reliability
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 pneumatic sensing edge is always powered and ready for operation, simplifying maintenance by maintaining a charged battery and eliminating the need for periodic replacements.
Implementation Method 1
transfer electrical energy to the radio device 10 by magnetic coupling
Implementation Method 2
The radio device 10 comprises a magnetic field receiver 20 which, when the safety device 2 is closed, is faced by and is magnetically coupled to the magnetic field emitter 18, to transfer electrical energy to the device 10
Data Source
Figure 1~2
AI summary
A safety device of pneumatic sensing edge type for motorized doors, with a wireless connection between a transmitter (28) associated with said door (2) and controlled by said pneumatic sensing edge (4), and a control unit (8) for the electric motor (6) which drives said door, characterised in that said transmitter (28) is provided with a rechargeable battery (24) which, when said door is in its closed state, is mains-powered via a contactless magnetic coupling device (18, 20).