Electromagnetic Doorlock with Button Detection and Power Saving
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Solution Overview
Problem
Electromagnetic door locks consume significant electrical energy, posing challenges for energy efficiency and controllability in access control systems.
Innovation Solution
An electromagnetic doorlock with a button detection module and power saving device, featuring an elastic member, abutment body, and positioning flange, which maintains a low-energy adsorption state until triggered, allowing the electromagnet to rapidly return to a normal lock state with sufficient power for security and energy savings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electromagnetic door lock operates continuously at normal power to maintain secure locking, then the reliability of locking is improved, but the energy consumption increases significantly
Solution Approach 1:
The electromagnetic door lock dynamically adjusts its power consumption based on operational state. It operates in a low-power adsorption state during normal locked conditions and transitions to a high-power normal locking state only when button detection is triggered or unlocking is required. This dynamic power adjustment resolves the contradiction by maintaining reliability when needed while minimizing energy consumption during sustained locking.
Solution Approach 2:
The system employs periodic button detection to monitor for unlock commands or forced entry attempts. Rather than continuously operating at full power, the lock uses periodic sensing to trigger power state transitions. This periodic monitoring approach allows the system to maintain security through timely detection while avoiding the energy waste of continuous high-power operation.
2Loss of energy
If the electromagnetic door lock reduces power to a low-energy adsorption state, then energy saving is improved, but the response time to resume full locking power increases
Solution Approach 1:
The system maintains a low-power adsorption state as a preliminary condition before full locking is needed. The adsorption plate remains positioned near the electromagnet in this state, prepared for rapid engagement. When power is restored to the normal locking state, the pre-positioned adsorption plate enables immediate secure locking without requiring time for mechanical movement or positioning, thus resolving the time delay issue.
Solution Approach 2:
The low-power adsorption state serves as a preparatory cushioning state that maintains basic holding capability while consuming minimal energy. This intermediate state provides a buffer that allows the system to quickly transition to full locking power when needed, as the mechanical components are already in near-final position and the magnetic field is pre-established at low level, reducing the time penalty for power resumption.
3Device complexity
If the adsorption plate is rigidly fixed to the door plate, then the structural simplicity is improved, but the button detection capability and power saving function are lost
Solution Approach 1:
The system separates the adsorption function from the detection function. The adsorption plate remains mechanically simple and rigidly mounted on the door plate, while a separate button detection module is integrated into the electromagnet assembly. This segmentation allows the adsorption structure to remain simple while adding detection capability through a distinct, modular component that senses button presses and triggers appropriate power state changes.
Solution Approach 2:
The electromagnet assembly serves multiple functions: it provides the primary electromagnetic locking force, houses the button detection module, and coordinates power state transitions. By making the electromagnet assembly a multi-functional unit that combines actuation and sensing capabilities, the system achieves adaptability without significantly increasing the complexity of individual components, as the detection and actuation functions share a common structural platform.
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
The solution reduces power consumption by maintaining a low-energy state until door activation, ensuring quick power resumption for secure access control while minimizing energy usage.
Implementation Method 1
When the electric magnet 11 is energized to produce electromagnetic attraction to attract the adsorption plate 12, the electromagnetic door lock 10 forms a lock state
Implementation Method 2
a seat fixed on the base and having an axial through hole for containing the abutment body and axially telescoping to provide an upward elastic force for the abutment body by the elastic member
Data Source
AI summary
An electromagnetic doorlock with button detection and power saving device includes an electromagnet assembly and a corresponding adsorption assembly. The electromagnet assembly is connected to a button detection module and the adsorption assembly has a pressing member to abut the button detection module. When the door is closed, the electromagnet assembly with electromagnetic attraction attracts the adsorption assembly and the pressing member presses the button detection module. That is, the electromagnetic doorlock usually stays in a low-energy attraction state; however, when the button detection module is triggered, the electromagnetic doorlock returns to a normal lock state for achieving power saving effect and control of the external force detection improvement.