Automated Electromagnetic Interlock for Radiation Room Security
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Solution Overview
Problem
During medical radiation procedures, existing manual locking systems often fail to secure radiation rooms effectively, leading to interruptions, loss of time and money, and risks of radiation contamination due to accidental door openings.
Innovation Solution
An automated electrical interlock system that secures and locks all entry and exit passages to a radiation room upon initiation of a medical radiation procedure, using a 24-volt alternating current signal to activate electromagnetic door magnets, and automatically releases the locks upon procedure completion or power loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual locking systems are used during radiation procedures, then personnel can control access, but the system is prone to human error and accidental door openings
Solution Approach 1:
The locking system automatically locks and unlocks based on radiation procedure status signals. The system serves itself by receiving automated signals from the radiation device and independently controlling the locking mechanism, eliminating the need for manual intervention and reducing human error.
Solution Approach 2:
The patent replaces manual mechanical locking operations with an automated electromechanical system. The locking device is controlled by electrical signals from the radiation procedure control system, substituting human manual operations with automated electronic control to improve reliability.
2Reliability
If automated locking systems are implemented, then door security is improved, but device complexity increases
Solution Approach 1:
The locking device is integrated with the existing radiation procedure control system, allowing it to serve multiple functions: automatic locking during procedures, automatic unlocking after procedures, and emergency release capabilities. This multi-functionality reduces the need for separate dedicated systems.
Solution Approach 2:
The system uses the radiation procedure control system as an intermediary to trigger the locking mechanism. Rather than creating a completely independent complex system, the patent leverages the existing control infrastructure to activate the locking function, simplifying the overall architecture.
3Reliability
If doors are manually locked during procedures, then access is controlled, but time is lost when doors are accidentally opened requiring procedure interruption
Solution Approach 1:
The locking device is activated in advance at the start of each radiation procedure through automatic signal reception. By preemptively securing the door before any potential opening can occur, the system prevents interruptions rather than responding to them after they happen.
Solution Approach 2:
The system continuously monitors the status of the radiation procedure through electrical signals and automatically adjusts the locking state accordingly. When the procedure is active, the door remains locked; when the procedure ends, the door automatically unlocks, providing real-time adaptive control that prevents unnecessary interruptions.
4Productivity
If automated interlock system is used, then productivity is improved by preventing interruptions, but initial setup and installation complexity increases
Solution Approach 1:
The locking device is combined with the existing radiation procedure control system infrastructure. By merging the access control function with the already-present electrical control networks in the radiation room, the patent reduces installation complexity while maintaining productivity benefits.
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 secure and controlled access to radiation rooms during procedures, preventing interruptions and radiation contamination, thereby reducing operational losses and ensuring safety.
Implementation Method 1
an electrical signal is sent from the medical device to the locking device, which automatically secures all passages to and from the radiation room
Implementation Method 2
If there is a general lose of power to medical device, the door magnets are automatically deactivated and the locking device is opened
Data Source
AI summary
The present invention relates to a fail safe method and apparatus for automatically securing an area during a medical radiation procedure. Upon initiation of the procedure, an electrical signal is sent from the medical device to the locking device, which automatically secures all passages to and from the radiation room. Upon completion of the procedure, a second signal automatically is sent from the medical device thereby opening the locking device and allowing free passage to and from the room.