Centrifuge Closure State Detection for Operational Safety
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Solution Overview
Problem
Laboratory centrifuges face safety issues due to potential errors in sensor detection, allowing unintentional operation when the closure is not fully closed, and vulnerability to manipulation, which can lead to unsafe conditions during high-speed operations.
Innovation Solution
Implementing a status detection device that monitors the closed and locked state of the centrifuge closure at multiple locations, ensuring the operational state is detected simultaneously across these locations within a predetermined time interval to prevent unsafe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single sensor is used to detect the closed state of the closure, then the device complexity is reduced, but the reliability of operation is compromised due to potential sensor errors or manipulation
Solution Approach 1:
The detection system is segmented into multiple independent sensor locations (at least two different locations) that each detect the closed state of the closure independently. The control unit requires confirmation from multiple locations before enabling operation, thereby segmenting the detection function to improve reliability while maintaining manageable complexity through modular sensor placement.
2Reliability
If the closure locking mechanism is made more secure to prevent manipulation, then the reliability improves, but the ease of operation deteriorates due to difficulty in closing and locking
Solution Approach 1:
The system incorporates feedback through multiple sensors that detect whether the closure is properly closed and locked at different locations. This feedback mechanism provides confirmation to the control unit, which then enables or disables operation accordingly. The feedback loop ensures secure locking without excessive complexity, as it automatically verifies the closed state and provides clear operational guidance.
3Reliability
If multiple sensors are deployed to detect closure state at different locations, then the reliability of detection improves, but the device complexity increases
Solution Approach 1:
The detection function is segmented across multiple sensor locations, with each sensor independently monitoring a specific area. This segmentation improves detection accuracy by covering different positions of the closure. The complexity is managed by using simple binary detection at each location (closed/not closed) and combining these signals logically in the control unit, rather than using a single complex sensor system.
Solution Approach 2:
The control unit serves multiple functions: it receives signals from multiple sensors, processes the detection data, determines whether the closure is properly closed based on multiple locations, and controls the operation enable/disable state. This multi-functionality consolidates the system's complexity into a single control unit that handles all detection and decision-making tasks.
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
Enhances safety by reducing the likelihood of errors and manipulation, ensuring the centrifuge operates only when the closure is properly closed and locked, thereby increasing operational safety and reliability.
Implementation Method 1
At least one sensor (21) is provided, in particular at least one magnetic field sensor (21), by means of which the fully closed state of the lid (5) can be detected
Data Source
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AI summary
The invention relates to a laboratory centrifuge (1) which has a closure (5) for closing an opening (6) of the laboratory centrifuge (1), wherein the laboratory centrifuge (1) has a state detection device (25) which is configured to: • detect a closed and/or locked, ready-to-use state of the closure (5) and/or • detect the closing and/or locking of the closure (5) and thus the emergence of the ready-to-use state, and to release the laboratory centrifuge (1) for operation when the ready-to-use state is detected and/or when the ready-to-use state is detected.The condition monitoring device (25) is designed to detect the operational state and/or its occurrence at a plurality of locations of the laboratory centrifuge (1) and to release the operation of the laboratory centrifuge (1) only when it detects the beginning of the operational state of the closure (5) and/or the occurrence of the operational state within a time interval of a specified length at a plurality of locations.