Switchable Dual-Resistor Temperature Sensing for Wide-Range Accuracy
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Solution Overview
Problem
Existing temperature detection methods struggle to accurately detect temperatures across a wide range due to limited variation in electric resistance values, making it difficult to determine temperatures with high precision.
Innovation Solution
A temperature detection device incorporating a first and second resistor element with different temperature variation and electric resistance value relationships, coupled with a switch and controller to periodically switch between circuits, generating and analyzing electric signals for accurate temperature measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single type of electrode is used for temperature detection, then the device structure is simple, but the temperature detection accuracy is insufficient within certain temperature ranges
Solution Approach 1:
The detection part is segmented into multiple electrode types (first electrode and second electrode), each optimized for different temperature ranges. The controller selectively activates appropriate electrodes based on the current temperature range, achieving high detection accuracy across wide temperature ranges while managing complexity through controlled segmentation.
Solution Approach 2:
The invention changes the parameter of electrode resistance value by using multiple electrode types with different resistance characteristics. Each electrode type has optimized resistance parameters suitable for specific temperature ranges, allowing the system to maintain high detection accuracy by selecting the appropriate resistance parameter for the current temperature condition.
2Measurement precision
If multiple electrode types are used to improve detection accuracy, then temperature detection precision improves, but the device complexity increases
Solution Approach 1:
Multiple electrode types are integrated into a single detection part that serves universal temperature detection functionality across different temperature ranges. The controller universally manages all electrode types through a unified control mechanism, allowing the detection part to perform multiple detection functions without proportionally increasing overall device complexity.
Solution Approach 2:
The system dynamically switches between different electrode types based on the current temperature range. The controller adjusts which electrode is active according to real-time temperature conditions, optimizing detection accuracy for each range while avoiding the permanent complexity of having all electrodes simultaneously connected and active.
3Adaptability or versatility
If a single electrode type is used, then the circuit configuration is simple, but the detection range is limited
Solution Approach 1:
The temperature detection capability is segmented across multiple electrode types, each optimized for specific temperature ranges. This segmentation allows the system to achieve wide overall detection range by combining the capabilities of individual electrodes, with the controller managing transitions between ranges through controlled switching.
Solution Approach 2:
The system changes the resistance parameter of the active electrode based on the target temperature range. By selecting electrodes with appropriate resistance parameters for different temperature conditions, the system achieves adaptability across wide temperature ranges while using a relatively simple switching mechanism controlled by the controller.
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 high-accuracy temperature detection across a broader range by leveraging the distinct sensitivity of each resistor element, improving precision and reliability.
Implementation Method 1
a first resistor element and a second resistor element having different relations between temperature variation and variation in an electric resistance value
Data Source
AI summary
A temperature detection device includes: a detection part in which a first resistor element and a second resistor element having different relations between temperature variation and variation in an electric resistance value are provided; a switch provided capable of performing a switching operation so as to be coupled to one of a first circuit including wiring to which the first resistor element is coupled and a second circuit including wiring to which the second resistor element is coupled; a power supply circuit configured to apply a voltage to the one circuit coupled to the power supply circuit through the switch to generate an electric signal in the one circuit; and a controller configured to detect a temperature of the detection part based on a strength of the electric signal output from the one circuit. The controller is configured to periodically cause the switch to perform the switching operation.