Infrared Sensor Temperature Control for Reaction Cells
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Solution Overview
Problem
Conventional temperature control methods for microdevices used in chemical analysis face challenges such as inaccurate temperature measurement, increased size and power consumption of heater blocks, and the limitations of internal temperature sensors, which affect the precision and cost-effectiveness of temperature control within reaction cells.
Innovation Solution
An analyzer with an infrared sensor positioned outside the microdevice to measure the temperature of the reaction cell by photoreceiving infrared rays and adjusting the heating element's heat value based on the sensor's signal, allowing for precise temperature control without the need for internal temperature sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heater block is used for temperature control, then the temperature control can be achieved, but the size of the measurement apparatus increases and power consumption increases
Solution Approach 1:
The patent extracts the temperature measurement function from the heating system by using a separate infrared sensor positioned outside the microdevice. This allows the heater block to be minimized or removed while maintaining temperature control capability through non-contact measurement and feedback control.
Solution Approach 2:
The patent replaces the mechanical contact-based temperature measurement (thermocouples or thermistors inside the reaction cell) with optical-based infrared detection. This substitution eliminates the need for internal temperature sensors and reduces the size of the measurement apparatus while maintaining accurate temperature measurement.
2Temperature
If a heater block is used for temperature control, then the temperature control can be achieved, but the size of the measurement apparatus increases
Solution Approach 1:
The patent extracts the temperature measurement function from the heating system by using a separate infrared sensor positioned outside the microdevice. This allows the heater block to be minimized or removed while maintaining temperature control capability through non-contact measurement and feedback control.
Solution Approach 2:
The patent replaces the mechanical contact-based temperature measurement (thermocouples or thermistors inside the reaction cell) with optical-based infrared detection. This substitution eliminates the need for internal temperature sensors and reduces the size of the measurement apparatus while maintaining accurate temperature measurement.
3Measurement precision
If internal temperature sensors are used, then the temperature measurement can be achieved, but the cost increases and the device complexity increases
Solution Approach 1:
The patent extracts the temperature measurement function from the heating system by using a separate infrared sensor positioned outside the microdevice. This allows the heater block to be minimized or removed while maintaining temperature control capability through non-contact measurement and feedback control.
Solution Approach 2:
The patent replaces the mechanical contact-based temperature measurement (thermocouples or thermistors inside the reaction cell) with optical-based infrared detection. This substitution eliminates the need for internal temperature sensors and reduces the size of the measurement apparatus while maintaining accurate temperature measurement.
4Measurement precision
If internal temperature sensors are used, then the temperature measurement can be achieved, but the cost increases
Solution Approach 1:
The patent extracts the temperature measurement function from the heating system by using a separate infrared sensor positioned outside the microdevice. This allows the heater block to be minimized or removed while maintaining temperature control capability through non-contact measurement and feedback control.
Solution Approach 2:
The patent replaces the mechanical contact-based temperature measurement (thermocouples or thermistors inside the reaction cell) with optical-based infrared detection. This substitution eliminates the need for internal temperature sensors and reduces the size of the measurement apparatus while maintaining accurate temperature measurement.
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 enables more precise temperature measurement and control within the reaction cell, reduces the size and cost of the microdevice, and maintains consistent reaction conditions, enhancing the accuracy and reproducibility of chemical analysis.
Implementation Method 1
an infrared sensor disposed inside said microdevice so as to photoreceive an infrared ray that is emitted from said reaction cell
Implementation Method 2
a heating element that is heated by electrification
Implementation Method 3
the sample transfers from the concave part 54 to the concave part 56 by utilizing capillary action
Data Source
AI summary
In an analyzer for analyzing a sample that reacts with a reagent 25, an analyzing tool 10, an infrared sensor 1 and a temperature controlling part 5 are provided. Inside the analyzing tool 10, a reaction cell 24 in which the sample and the reagent 25 react with each other and a heating element 33 that is heated by electrification are provided. The infrared sensor 1 is disposed outside the analyzing tool 10 so as to photoreceive an infrared ray 9 that is emitted from the reaction cell 24, and outputs a signal that is in accordance with an amount of the photoreceived infrared ray 9 to the temperature controlling part 5. The temperature controlling part 5 adjusts a heat value of the heating element 33 based on the signal from the infrared sensor 1.