Ring Heating Assembly for Uniform PCR Tube Temperature Control
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Solution Overview
Problem
Existing testing instruments that use PCR or QPCR principles face challenges in achieving temperature uniformity across multiple test tubes due to simultaneous heating, which affects the accuracy and reliability of sample detection.
Innovation Solution
A temperature control assembly with a ring-shaped arrangement of heating units and corresponding temperature sensors, each with a bearing hole and heating body, is integrated into a testing instrument. This assembly includes a control panel that electrically connects the heating units and sensors to independently monitor and control the temperature of individual test tubes, ensuring uniform heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a single heater is used to simultaneously heat multiple test tubes, then the heating process is simple and fast, but temperature uniformity across test tubes cannot be achieved
Solution Approach 1:
The single heater is divided into multiple independent heating units, each corresponding to a specific test tube position. Each heating unit includes its own heating element and temperature sensor, enabling independent temperature control for each test tube. This segmentation resolves the contradiction by allowing temperature uniformity across multiple test tubes while maintaining a relatively simple modular structure.
Solution Approach 2:
Each heating unit is designed with localized heating elements and temperature sensors positioned at specific locations corresponding to individual test tube positions. This local quality approach ensures that each test tube receives optimized heating independently, achieving temperature uniformity across all test tubes without requiring a complex centralized heating system.
2Reliability
If multiple heating units with individual temperature sensors are used, then temperature uniformity is achieved, but the control system becomes more complex
Solution Approach 1:
The control system is designed with universal control logic that manages multiple heating units through a standardized interface. Each heating unit follows the same control pattern with its heating element and temperature sensor, allowing the control system to handle multiple units efficiently without requiring complex individual control strategies for each unit.
Solution Approach 2:
Each heating unit is equipped with a temperature sensor that provides real-time feedback to the control system. The control system uses this feedback to adjust the heating power of each unit independently, ensuring accurate temperature control and high detection reliability. This feedback mechanism simplifies the control logic by using a consistent control-loop approach for all heating units.
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 allows for precise and uniform temperature control of multiple test tubes, enhancing the accuracy and reliability of sample detection by maintaining consistent temperatures across all samples.
Implementation Method 1
The first circuit generates heat by converting electricity to heat
Implementation Method 2
each heating body includes a metal-based heat dissipation plate
Implementation Method 3
Each of the temperature sensors is configured to sense a temperature
Data Source
AI summary
A temperature control assembly includes a plurality of heating units and a plurality of temperature sensors. The heating units are arranged in a ring shape, and the temperature sensors are respectively arranged on the heating units. Each of the heating units includes a bearing hole and a heating body. The heating body surrounds the bearing hole and is configured to generate heat, and each of the temperature sensors is configured to sense a temperature.