Instrument Head Controller Voltage Adaptation
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Solution Overview
Problem
Physical assessment devices, such as otoscopes and ophthalmoscopes, are typically incompatible with different instrument handles due to distinct electrical requirements, leading to a proliferation of device types and limited compatibility.
Innovation Solution
The implementation of a controller with processing units and memory in the instrument head that detects voltage instabilities and transitions through various operational modes to maintain stable illumination output, including normal, mitigation, rapid lowering, and disable modes, allowing compatibility with multiple instrument handles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an instrument head is designed with specific electrical requirements for a particular power source, then the illumination output is stable and reliable, but the device becomes incompatible with other instrument handles having different power profiles
Solution Approach 1:
The instrument head employs dynamic operational modes that adjust illumination behavior based on detected voltage stability. The system transitions between normal mode, mitigation mode, rapid lowering mode, and disable mode depending on power source characteristics, enabling adaptation to different instrument handles while maintaining illumination stability through active monitoring and response
Solution Approach 2:
The controller continuously monitors voltage input from the power source and provides feedback control of the illumination output. By detecting voltage instabilities and adjusting LED current accordingly, the system maintains reliable illumination across different power profiles while remaining compatible with various instrument handles
2Reliability
If the instrument head operates in normal mode with full illumination output, then the viewing quality is optimal, but voltage instabilities cause flickering and unreliable operation
Solution Approach 1:
The system applies partial illumination action by operating in mitigation mode with reduced LED current when voltage instabilities are detected. This prevents flickering and maintains reliable operation at the cost of reduced illumination intensity, trading off some viewing quality for illumination stability
Solution Approach 2:
The illumination intensity dynamically adjusts based on voltage stability conditions. The system transitions between full output in normal mode and reduced output in mitigation mode, rapidly lowering mode, or complete disable mode, optimizing the balance between viewing quality and illumination stability in real-time
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
Enables the instrument head to maintain consistent illumination and prevent flickering by adapting to different power sources and voltage profiles, ensuring compatibility with various instrument handles and power sources, thereby reducing the need for multiple device types.
Implementation Method 1
The instrument head includes: at least one light-emitting diode
Data Source
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AI summary
An instrument head for attachment to a plurality of instrument handles having different power sources is described. The instrument head includes at least one light-emitting diode, and a controller. When the controller detects an instability in a voltage input from a power source in an instrument handle attached to the instrument head, the controller transitions from a normal mode of operation to a mitigation mode of operation. The mitigation mode of operation prevents an increase in output of the at least one light-emitting diode for a predetermined period of time.