Voltage Differential Sampling and Calibration System
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Solution Overview
Problem
Existing voltage detection systems suffer from inaccuracies and instability in voltage output, leading to unreliable test results and time-consuming fault identification.
Innovation Solution
A high-end voltage differential sampling and calibration system comprising an accuracy detector, calibration controller, differential operational amplifier, comparator, memory, and DAC, which acquires and compensates non-inverting and inverting voltages to achieve stable and accurate output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional voltage sampling methods are used, then the device complexity is low, but the measurement precision is insufficient and voltage output stability is poor
Solution Approach 1:
The system divides voltage measurement into differential components (non-inverting and inverting voltages) measured separately by the differential operational amplifier, then processed independently through calibration controllers before being recombined. This segmentation allows each channel to be optimized for precision while maintaining overall system manageability.
Solution Approach 2:
The patent introduces calibration controllers as intermediary devices between the differential operational amplifier and the final output. These intermediaries perform real-time calibration and compensation of voltage signals, improving measurement precision without requiring complete redesign of the entire measurement system.
2Measurement precision
If voltage bias is excessive in traditional testing, then the testing process is simple, but test data loss occurs and measurement accuracy deteriorates
Solution Approach 1:
The system implements feedback through calibration controllers that continuously monitor the differential voltage signals and adjust compensation values based on detected deviations. This feedback mechanism prevents excessive voltage bias from causing data loss by actively correcting deviations before they affect measurement reliability.
Solution Approach 2:
The patent applies preliminary calibration actions through the calibration controllers before final voltage measurements are taken. By pre-adjusting and compensating voltage signals, the system prevents the occurrence of excessive voltage bias that would lead to test data loss, ensuring reliable measurements from the outset.
3Stability of the object's composition
If traditional voltage sampling is used, then the system is simple to operate, but voltage output stability is poor and fluctuations occur
Solution Approach 1:
The calibration controllers operate autonomously to self-calibrate and stabilize the differential voltage signals without requiring manual intervention. The system automatically detects voltage deviations and applies compensations, maintaining stable voltage output while minimizing the need for complex operational procedures by users.
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 achieves high-accuracy and stable voltage output by compensating voltage differences, thereby improving measurement accuracy and reducing test data loss.
Implementation Method 1
the differential operational amplifier is configured to: acquire a non-inverting voltage and an inverting voltage of a to-be-tested device, and output the non-inverting voltage and the inverting voltage to the comparator
Implementation Method 2
the accuracy detector is configured to: detect a difference value between the non-inverting voltage and the inverting voltage of the to-be-tested device acquired by the differential operational amplifier
Implementation Method 3
the DAC is configured to: perform signal conversion on the non-inverting voltage for compensation and the inverting voltage for compensation which are obtained by the calibration controller, and compensate a converted signal to an output voltage of the differential operational amplifier
Data Source
AI summary
The present disclosure discloses a high-end voltage differential sampling and calibration system and method. The system includes an accuracy detector, a calibration controller, a differential operational amplifier, a comparator, a memory, and a digital to analog converter (DAC). An output characteristic is converted through the DAC U1 to achieve conversion of an acquired voltage signal value, thus achieving a high-accuracy output voltage difference. The high-accuracy detector and the high-precision calibration controller are used to be compared with an output voltage of the differential operational amplifier, and a difference value is calibrated and compensated to an output end to achieve a stable state of the output voltage. The present disclosure improves the stability and accuracy of voltage outputting, and has high measurement accuracy, high effect, and excellent stability.