Semiconductor Device Temperature Measurement Low Voltage
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Solution Overview
Problem
Conventional semiconductor devices face challenges in precise temperature measurement at low driving voltages due to decreased slope and level of temperature voltage, making it difficult to accurately measure temperature changes.
Innovation Solution
The semiconductor device employs a control voltage generator and temperature voltage output block, with resistors and transistors configured to generate temperature signals and reference voltages, allowing for precise temperature measurement by adjusting resistance ratios and using multiple temperature sections to maintain desired slope and level characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If conventional temperature voltage generator is used at low driving voltage, then power consumption is reduced, but temperature measurement precision deteriorates due to decreased slope and level of temperature voltage
Solution Approach 1:
The temperature measurement range is divided into multiple temperature sections, with each section having its own dedicated temperature voltage generator circuit. This segmentation allows each circuit to be optimized for its specific temperature range, maintaining measurement precision even at low driving voltages by selecting the appropriate section for the current temperature condition.
Solution Approach 2:
The patent implements dynamic switching between multiple temperature voltage generators based on the current temperature section. A selector circuit dynamically chooses which temperature voltage generator to use, allowing the system to adapt to varying temperature conditions and maintain optimal measurement precision across the entire temperature range while operating at low driving voltages.
2Use of energy by stationary object
If driving voltage is reduced to save power, then energy consumption decreases, but the slope of temperature voltage decreases making precise measurement difficult
Solution Approach 1:
Each temperature section has a dedicated temperature voltage generator with resistance values specifically optimized for that temperature range. This local optimization ensures that each generator produces an appropriate voltage slope for its designated temperature section, making temperature detection easier and more precise within each local range even when operating at low overall driving voltages.
Solution Approach 2:
The patent changes resistance parameters of the temperature voltage generators based on the selected temperature section. By adjusting resistance values according to the current temperature range, the system maintains appropriate voltage slopes for accurate measurement while operating at low driving voltages, thus reducing energy consumption without sacrificing measurement capability.
3Device complexity
If single temperature voltage generator is used, then device complexity is reduced, but it cannot maintain desired slope and level across different temperature sections
Solution Approach 1:
The patent creates a universal temperature measurement system that can handle multiple temperature sections through the use of multiple temperature voltage generators working together. Each generator serves a specific temperature range, but collectively they provide comprehensive coverage across the entire operating temperature range, enhancing the system's adaptability and versatility.
Solution Approach 2:
A selector circuit acts as an intermediary between the multiple temperature voltage generators and the rest of the measurement system. This intermediary dynamically connects the appropriate generator to the measurement circuit based on the current temperature section, enabling the system to adapt to different temperature conditions without requiring complex reconfiguration of the entire measurement apparatus.
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 accurate temperature measurement at low driving voltages by maintaining higher slope values in each temperature section, improving precision and resolving the limitations of conventional systems.
Implementation Method 1
a voltage divider for dividing a driving voltage to generate a plurality of divided voltages
Implementation Method 2
a temperature voltage output block for outputting a temperature voltage varying with temperature according to the control voltage and the temperature section signal
Data Source
AI summary
A semiconductor device includes a control voltage generator to generate a control voltage according to a temperature section signal; and a temperature voltage output block to output a temperature voltage varying with a temperature according to the control voltage and the temperature section signal.