Variable Calibration Voltage Circuit for Multipoint Accuracy
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Solution Overview
Problem
Traditional multipoint circuit calibration methods require additional circuit components for each calibration point, leading to increased cost and reliability issues, and traditional systems struggle with inaccuracy due to component variations and non-linear signal paths.
Innovation Solution
A circuit calibration system using a variable voltage source, an RC circuit, and a switch to generate a time-varying voltage, allowing for multipoint calibration with a single output line, and an intelligence module to control the calibration process, enabling accurate calibration without additional voltage sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional multipoint calibration uses additional voltage sources for each calibration point, then measurement accuracy is improved, but device complexity and cost increase
Solution Approach 1:
A single voltage source is designed to perform multiple functions by generating multiple calibration voltages through different output configurations. The voltage source can switch between different calibration points (e.g., 0V, 2.5V, 5V) using a small number of switches, eliminating the need for separate voltage sources for each calibration point while maintaining measurement accuracy.
Solution Approach 2:
Multiple calibration voltage sources are merged into a single integrated voltage source with switching capability. Instead of having separate voltage sources for each calibration point, the system combines them into one source that can selectively output different calibration voltages, reducing component count and system complexity.
2Adaptability or versatility
If traditional calibration systems use more circuit components for each calibration point, then calibration range is improved, but reliability deteriorates
Solution Approach 1:
The single voltage source with switching capability provides multiple calibration points (0V, 2.5V, 5V) through different output configurations, achieving wide calibration range without requiring separate voltage sources for each point. This reduces the number of components that could fail, thereby improving reliability.
Solution Approach 2:
The system uses intelligent control algorithms to automatically select and apply appropriate calibration voltages based on the required calibration point. The microcontroller manages the switching and calibration process, reducing the need for complex external circuitry and minimizing potential failure points.
3Device complexity
If traditional systems apply calibration coefficients computed from limited points, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The system dynamically selects from multiple calibration voltages (0V, 2.5V, 5V) based on the required measurement range and applies appropriate calibration coefficients for each point. This dynamic approach allows the use of multiple calibration points to improve precision while keeping the device complexity manageable through automated switching and control.
Solution Approach 2:
The system uses feedback from the calibration process to automatically select the appropriate calibration coefficients and apply them to correct measurement errors. The microcontroller monitors the calibration status and adjusts the output accordingly, ensuring high measurement precision without requiring manual intervention or complex external circuitry.
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 system provides accurate and reliable multipoint calibration across a wide range with a single reference voltage, reducing component costs and sensitivity to part-to-part variations, while allowing for infinite calibration points, thus improving measurement accuracy and reliability.
Implementation Method 1
The variable voltage system can include an RC circuit having a time constant and connected to the output line
Data Source
AI summary
A circuit calibration system can include a calibration voltage source, a calibration output line, and a variable voltage system connected between the calibration voltage source and the calibration output line. The variable voltage system can be configured to provide a variable calibration voltage to the calibration output line.