Door Control Device with Position-Based Energy Deactivation
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Solution Overview
Problem
Fire protection and escape doors require continuous electrical energy consumption even when not performing their intended functions, leading to inefficiency and high energy usage.
Innovation Solution
A door control device comprising a mechanical or magnetic holding device, a position unit, and a deactivation device that interrupts the electrical supply when the door is not in its predefined position, minimizing energy consumption by only activating systems when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the holding device and monitoring system remain continuously activated, then the door can respond immediately to fire or emergency situations, but electrical energy consumption increases significantly
Solution Approach 1:
The holding device transitions from a static continuously-powered state to a dynamic state where it alternates between active and deactivated modes based on door position. The system dynamically adjusts power consumption by deactivating the holding device when the door is in its predefined position (open for fire doors, closed for escape doors), while maintaining the capability to activate immediately when needed.
Solution Approach 2:
The door control system automatically determines when the holding device should be deactivated based on the door's position relative to its predefined position. The position unit continuously monitors door position and triggers deactivation when the door reaches the correct position, eliminating the need for continuous manual monitoring or intervention.
2Use of energy by moving object
If the holding device is deactivated to save energy, then electrical energy consumption decreases, but the door may not be held securely in its predefined position
Solution Approach 1:
The electrical power supply to the holding device is extracted or removed when the door is in its predefined position. Instead of continuously powering the holding device, the system selectively removes power when the door is already in the correct position, where mechanical or magnetic holding is sufficient without electrical assistance.
Solution Approach 2:
The holding device operates in periodic cycles, alternating between active and deactivated states based on door position. When the door moves away from the predefined position, the holding device activates to assist with movement; when the door reaches the predefined position, the holding device deactivates, creating a rhythmic on-off pattern that balances energy savings with functional requirements.
3Reliability
If the door control system continuously monitors the environment, then fire or smoke can be detected immediately, but the monitoring device consumes electrical energy even when unnecessary
Solution Approach 1:
The monitoring system transitions from continuous operation to dynamic operation, adjusting its activity level based on door position. When the door is in its predefined position (fulfilling its primary function), the monitoring device is deactivated to save energy. When the door moves from its predefined position, the monitoring system activates to ensure fire or smoke can be detected.
Solution Approach 2:
The system prepares for potential fire detection by having the monitoring capability ready to activate immediately when the door moves from its predefined position. Rather than maintaining constant monitoring, the system pre-arranges for monitoring to begin automatically when conditions warrant (door movement), balancing energy savings with detection readiness.
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
Significantly reduces electrical energy usage by deactivating holding and monitoring systems when doors are in their intended positions, ensuring efficient operation and extended battery life or power supply duration.
Implementation Method 1
The holding device is particularly preferably a magnetic holding device with a bistable electromagnet
Data Source
Figure 1~2
AI summary
The invention relates to a door control device (1) comprising a holding device (9) for holding a door in a predefined position, a position unit (6) for sending a status signal when the door (2, 3) is not in the predefined position, and a deactivation device (7) for deactivating the holding device (9) upon receipt of the status signal, as well as a method for controlling a door (2, 3) comprising the steps: monitoring a state of an environment of the door (2, 3), wherein the door (2, 3) is detected in a predefined position, and generating an actuation signal upon detection of at least one predefined state, releasing the door (2, 3) upon detection of the at least one predefined state, and terminating the monitoring when the door (2, 3) is not in the predefined position.