Endoscope Imaging Voltage Feedback for Heat and Cable Loss Control
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Solution Overview
Problem
Existing imaging systems struggle to account for individual differences in imaging elements and cables, leading to inefficiencies in power supply voltage adjustment and potential heat generation, which can affect image quality and tissue safety.
Innovation Solution
The system includes detectors to measure voltage and current values in signal lines, calculates resistance, and adjusts power supply voltage based on these measurements to maintain optimal conditions for the imaging element, minimizing heat generation and signal line diameter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power supply voltage is adjusted to account for individual differences in imaging elements and cables, then imaging element performance is improved, but device complexity increases
Solution Approach 1:
The control device measures the actual power supply voltage at the imaging element using a detector, compares it with the target voltage, and adjusts the power supply voltage accordingly. This closed-loop feedback mechanism ensures accurate voltage adjustment for individual imaging elements and cables while maintaining systematic control, resolving the contradiction between improved reliability and increased device complexity.
Solution Approach 2:
The imaging element itself participates in the voltage adjustment process by providing feedback on its actual operating conditions. The detector at the imaging element measures the power supply voltage and transmits this information back to the control device, enabling the system to self-adjust without requiring complex external intervention, thus improving reliability while limiting complexity growth.
2Loss of energy
If signal line diameter is increased to reduce resistance, then power supply efficiency is improved, but ease of operation deteriorates due to larger cable size
Solution Approach 1:
Instead of changing the physical parameter of signal line diameter, the system changes the electrical parameter of power supply voltage. By dynamically adjusting the voltage level based on measured resistance and individual differences, the system compensates for energy loss in existing cable sizes without requiring larger cables, thus improving power supply efficiency while maintaining ease of operation.
Solution Approach 2:
The system applies localized voltage adjustment at the imaging element level rather than requiring uniform changes to the entire cable system. Each imaging element receives the precise voltage it needs based on its specific resistance characteristics, eliminating the need to increase overall cable diameter while optimizing power delivery to each component individually.
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
This approach ensures accurate power supply to the imaging element, reduces heat generation, and maintains image quality while preventing signal line enlargement, thus enhancing the performance and safety of the imaging system.
Implementation Method 1
a second detector configured to detect a current value in the first signal line
Implementation Method 2
a third detector configured to detect the voltage value of the second power supply voltage supplied by the power source
Implementation Method 3
a calculator configured to calculate a resistance value of the first signal line based on the voltage value of the first power supply voltage, the current value, and a voltage detection value of the second power supply voltage
Data Source
AI summary
An imaging system includes: an imaging unit configured to generate a video signal; a control device configured to control the imaging unit; a first signal line configured to transmit a predetermined power supply voltage to the imaging unit; and a second signal line configured to transmit the video signal to the 284 control device. The imaging unit includes an imaging element including a pixel portion configured to generate the video signal according to a light reception amount and output the generated video signal to the second signal line, and a first detector configured to detect a voltage value of a power supply voltage that has reached the imaging unit via the first signal line as a voltage value of a first power supply voltage and output the voltage value to the second signal line.