Sequential Peltier Drive Timing for Light Source Power Reduction
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Solution Overview
Problem
In medical applications, temperature adjustment of light sources using Peltier devices increases power consumption, which can inhibit battery-driven devices during emergency medical care due to increased leakage current.
Innovation Solution
A light source apparatus with multiple temperature adjustment units and a drive control unit that controls the timing of these units to reduce power consumption, allowing for efficient temperature adjustment while minimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If temperature adjustment units are driven simultaneously to adjust temperatures of multiple light source portions, then temperature adjustment speed is improved, but power consumption increases
Solution Approach 1:
The drive control unit controls temperature adjustment units to operate at different time intervals rather than simultaneously. The control unit determines drive timing for each temperature adjustment unit based on detected temperatures, creating a periodic/sequential operation pattern that reduces peak power consumption while maintaining temperature adjustment effectiveness.
Solution Approach 2:
The system performs preliminary temperature detection for all light source portions before driving temperature adjustment units. This preliminary action allows the control unit to plan and sequence the drive timing of each unit, ensuring optimal power management while achieving necessary temperature adjustments.
2Measurement precision
If Peltier devices are used for temperature adjustment, then temperature control precision is improved, but power consumption increases
Solution Approach 1:
The system uses periodic temperature detection and sequential operation of Peltier devices. The drive control unit detects temperatures at specific intervals and activates individual Peltier units only when needed, maintaining precise temperature control while minimizing continuous power consumption.
Solution Approach 2:
The system uses temperature detection feedback to automatically determine when and which temperature adjustment units need to operate. This self-regulating mechanism ensures Peltier devices are activated only when temperature deviations require correction, optimizing both precision and power efficiency.
3Productivity
If multiple temperature adjustment units operate simultaneously, then temperature adjustment efficiency is improved, but leakage current increases
Solution Approach 1:
The drive control unit implements periodic temperature detection and sequential activation of temperature adjustment units. By controlling units to operate at different times based on detected temperature conditions, the system maintains adjustment efficiency while limiting peak current draw and reducing leakage current effects.
Solution Approach 2:
The system activates only the necessary number of temperature adjustment units at any given time based on actual temperature needs. Rather than running all units continuously or simultaneously, the control unit applies partial action by selecting specific units for operation, reducing overall power consumption and leakage current while maintaining sufficient adjustment efficiency.
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 during temperature adjustments, enabling stable battery operation during emergencies and prolonging the lifetime of light sources while preventing wavelength changes.
Implementation Method 1
a Peltier device and a thermistor are arranged so as to be in close contact with each other. By the Peltier device being driven on the basis of a temperature detected by the thermistor, the temperature of the semiconductor laser is constantly kept
Data Source
AI summary
A light source apparatus according to an embodiment of the present technology includes a plurality of light source portions, a plurality of temperature adjustment units, and a drive control unit. The plurality of temperature adjustment units are capable of respectively adjusting temperatures of the plurality of light source portions. The drive control unit is capable of controlling a drive timing of each of the plurality of temperature adjustment units.