Wireless Fire Door Hold-Open System with Radio Control
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Solution Overview
Problem
Existing fixed systems for fire protection doors require complex cabling and a separate triggering device, which increases installation effort and reduces flexibility, especially when components are installed on opposite sides of a fire protection wall.
Innovation Solution
A base system with a signal generator and a parking device, where the signal provider has its own energy supply and a radio module, and the parking device includes a control device with a radio module that communicates directly with the signal provider to switch between modes and release the door without the need for a separate triggering device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate triggering device is used to control the hold-open device, then the system can reliably trigger door closing, but the device complexity increases and installation becomes more difficult
Solution Approach 1:
The patent merges the triggering device and hold-open device into a single integrated unit. The control device combines both the triggering functionality (to detect fire alarms and initiate door closing) and the hold-open functionality (to maintain door open position during normal operation) within one device, eliminating the need for separate triggering and holding mechanisms and their associated cable connections.
Solution Approach 2:
The control device performs multiple functions: it acts as both the triggering device (receiving fire alarm signals and initiating closing sequences) and the hold-open device (maintaining door open position via the holding element). This multi-functional design reduces system complexity while maintaining reliability, as the single control device can independently manage both normal open-position maintenance and emergency closing activation.
2Reliability
If components are connected via cables for power and control signals, then reliable power supply and control are ensured, but installation effort increases and flexibility decreases
Solution Approach 1:
The patent extracts the cable connection requirement from the system by implementing wireless communication between the control device and external signal transmitters (such as fire alarm receivers). The control device includes a radio module that receives trigger signals wirelessly, eliminating the need for complex cable routing through fire protection walls while maintaining reliable signal transmission for triggering door closing sequences.
Solution Approach 2:
The patent replaces the mechanical cable-based connection system with wireless radio communication. The control device's radio module substitutes for physical cable connections to receive fire alarm signals, eliminating the need to drill and seal holes in fire protection walls for cable passage, thereby reducing installation effort while maintaining system reliability.
3Device complexity
If the hold-open device is floor-mounted to save space, then the system becomes more compact, but wiring complexity increases as cables must run from floor to lintel
Solution Approach 1:
The patent extracts the wiring requirement from the floor-mounted hold-open device by implementing wireless communication. The control device receives fire alarm signals and control commands wirelessly via its radio module, eliminating the need for cables to run from the floor-mounted device up to the lintel area, thus maintaining system compactness while eliminating complex wiring.
4Device complexity
If all components are housed under one cover for compactness, then the system becomes more integrated, but cable connections become difficult to access for maintenance and replacement
Solution Approach 1:
The patent extracts the cable connection infrastructure from the integrated housing by implementing wireless communication. The control device communicates with external signal transmitters and power supplies wirelessly, eliminating the need for internal cable connections that would require disassembly of the integrated housing for maintenance. This allows the compact integrated design to be maintained while significantly improving ease of repair.
Data Source
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AI summary
The invention relates to a hold-open system with at least one signal transmitter (40) and a hold-open device (12) designed to hold a leaf (22) of a door, window, or the like, in particular a fire or smoke protection door, in an open position in a first mode, and to release the leaf in a second mode. The hold-open system is characterized in that the signal transmitter (40) has its own power supply (46) and a radio module (44); the hold-open device (12) has a control unit (30), wherein the control unit (30) comprises a radio module (32) designed to communicate with the radio module (44) of the signal transmitter (40), and wherein the control unit (30) is designed to switch the hold-open device (12) from the first mode to the second mode in order to release the door, depending on a signal from the signal transmitter (40); and the hold-open device (12) is associated with a power supply (38, 39).The invention further relates to a locking device for a locking system.